CN221949739U - Sewage collecting device for surface cleaning machine and surface cleaning machine - Google Patents

Abstract

The utility model discloses a sewage collection device for a surface cleaning machine and a surface cleaning machine, belonging to the technical field of cleaning equipment, wherein the sewage collection device comprises a barrel body provided with a sewage inlet pipe and a barrel cover provided with an exhaust passage, the barrel body having a maximum liquid level mark, the sewage collection device further comprising a first partition placed horizontally in the barrel body and located above the maximum liquid level mark, the first partition dividing the inner cavity of the barrel body into an upper cavity and a lower cavity, a vent for connecting the upper cavity and the lower cavity is provided on the first partition, a vertical second partition is provided in the lower cavity, and the second partition dividing the lower cavity into a connected left cavity and a right cavity. The first partition is used to reduce the sewage flowing into the upper cavity, and the second partition is used to slow down the surge phenomenon in the lower cavity, further reducing the sewage flowing into the upper cavity, reducing the probability of the sewage in the upper cavity flowing to the exhaust passage, reducing the risk of water inlet damage to the sewage suction fan, and being conducive to ensuring the working performance stability of the sewage suction fan.

Description

Sewage collecting device for surface cleaning machine and surface cleaning machine

Technical Field

The utility model relates to the technical field of cleaning equipment, in particular to a sewage collecting device for a surface cleaning machine. The utility model also provides a surface cleaning machine adopting the sewage collecting device.

Background Art

Existing handheld surface cleaners generally include a body, a floor brush, a liquid supply component and a dirt suction component. The floor brush is provided with a cleaning member driven by a motor and a floor scraper in contact with the floor. The liquid supply component supplies liquid to the cleaning member so that the cleaning member can absorb the liquid and then wipe the floor. The floor scraper can scrape the floor when the floor brush moves. The dirt suction airflow formed by the suction fan providing suction can suck the dirt near the dirt suction port into the sewage bucket.

In order to enable the handheld surface cleaner to clean the floor in low spaces such as under the bed, sofa, and cabinet, some existing handheld surface cleaners can rotate backward at a large angle relative to the floor brush to lie down, and the lying down body can drive the floor brush to extend into the low space for cleaning. Since the sewage bucket is generally arranged on the body, when the sewage bucket lies backward with the body, the height of the suction fan, the sewage bucket, the pipe opening of the sewage inlet pipe in the sewage bucket and other structures decreases with the inclination of the body, and the height difference between the liquid level in the sewage bucket and the suction fan is greatly reduced. When the power of the suction fan remains unchanged, the head of the sewage liquid flowing from the suction port on the floor brush through the sewage inlet pipe into the sewage bucket remains unchanged. When lying down, the sewage liquid flowing from the sewage inlet pipe into the sewage bucket moves toward the suction fan for a longer distance under the action of negative pressure suction, and the sewage liquid flowing into the sewage bucket can move to a position closer to the exhaust channel on the bucket cover. In order to allow the machine body to enter a low space, the sewage bucket is generally designed to be thinner. When the sewage bucket lies backward with the machine body, the angle between it and the ground is less than 20°, or even close to 0°. At this time, the liquid level in the sewage bucket and the sewage suction fan are almost at the same height, and the front-to-back distance between them remains unchanged. The dirty liquid in the bucket is closer to the inlet of the exhaust duct on the bucket cover. Therefore, some products make the inlet of the exhaust duct connected to the sewage suction motor as high as possible relative to the lying sewage bucket. However, since the height difference between the inlet of the exhaust duct and the liquid level in the bucket is small, and since the dirty liquid in the bucket will shake when the user pushes and pulls the machine body forward and backward, the shaking dirty liquid is more likely to flow into the inlet of the exhaust duct, resulting in a high risk of water ingress and damage to the sewage suction fan, which is not conducive to ensuring the stability of the working performance of the sewage suction fan.

The invention patent with application number CN202111029127.2 and invention name "Anti-surge device, recovery storage part and surface cleaning device of surface cleaning device" discloses that an anti-surge device is arranged inside the recovery storage part, and multiple cavities are arranged inside the recovery storage part. The anti-surge device includes a first anti-surge part, which is arranged between a cavity in the recovery storage part where a gas-liquid separator is provided to perform gas-liquid separation and a cavity for storing recovered liquid; the anti-surge device also includes a second anti-surge part, and the recovery storage part includes a first storage part and a second storage part, and a cavity provided with a gas-liquid separator to perform gas-liquid separation and a cavity for storing recovered liquid are formed in the second storage part, and the second anti-surge part is arranged between a cavity in the first storage part for storing recovered liquid and a cavity in the second storage part for storing recovered liquid. When the surface cleaning device is in a lying position, the first anti-surge part is located below the gas-liquid separator to prevent the waves generated by the recovered liquid during the posture change of the surface cleaning device from contacting the gas-liquid separator. The gas-liquid separation device in the first storage part may include a motor and a gas-liquid separator. The motor drives the gas-liquid separator to rotate to achieve gas-liquid separation. The liquid remains in the recovery storage part, and the gas is discharged after filtering. Although the structure in this patent solves the surge problem, the anti-surge structure is relatively complex. The complex anti-surge structure also occupies more space in the recovery storage part, resulting in a small effective dirt capacity of the recovery storage part, which is not conducive to the cleaning of the recovery storage part and the gas-liquid separation device. In addition, since the gas-liquid separation device is driven by a motor, the risk of the motor being contaminated by dirty liquid is increased, and the gas-liquid separation device will also increase the difficulty of coordination between the recovery storage part and the surface cleaning equipment.

In addition, there is also a structure in the prior art that divides the inner cavity of the sewage bucket into two cavities, the upper cavity is used to hold solid dirt, and the lower cavity is used to hold liquid dirt. A filter plate is set between the two cavities. The dirt flowing into the sewage bucket is filtered by the filter plate, so that the fixed dirt remains in the upper cavity, and the liquid dirt flows downward into the lower cavity. The airflow used to absorb the dirt first flows upward into the upper cavity, and then flows downward through the lower cavity to the exhaust channel connected to the lower cavity. In this structure, since the exhaust channel is directly connected to the lower cavity, when the sewage bucket follows the main body of the cleaning equipment to lie backward, the dirty liquid in the lower cavity is easy to follow the airflow to flow to the exhaust channel, so the risk of damage to the liquid inlet of the suction fan is high, and it is not conducive to ensuring the stability of the working performance of the suction fan.

Utility Model Content

In order to solve the shortcomings and deficiencies existing in the above-mentioned prior art, the utility model provides a sewage collection device for a surface cleaning machine, which utilizes a first baffle to reduce the dirty liquid flowing into the upper chamber, and uses a second baffle to slow down the surge phenomenon in the lower chamber, thereby further reducing the dirty liquid flowing into the upper chamber, reducing the probability of the dirty liquid in the upper chamber flowing into the exhaust channel, reducing the risk of water inlet damage to the sewage suction fan, and helping to ensure the stability of the working performance of the sewage suction fan.

In order to achieve the above-mentioned technical objectives, the utility model provides a sewage collection device for a surface cleaning machine, comprising a barrel body provided with a sewage inlet pipe and a barrel cover provided with an exhaust channel, the barrel body having a maximum liquid level mark, the sewage collection device also includes a first partition placed horizontally in the barrel body and above the maximum liquid level mark, the first partition divides the inner cavity of the barrel body into an upper cavity and a lower cavity, a vent for connecting the upper cavity and the lower cavity is provided on the first partition, a vertical second partition is provided in the lower cavity, the second partition divides the lower cavity into a connected left cavity and a right cavity.

Preferably, a surge-proof component is provided in the left cavity or the right cavity and is located below the vent, and a projection of the vent along the height direction of the barrel body falls within the range of the surge-proof component.

Preferably, the surge protection member comprises a third partition with filter holes, and the third partition is horizontally placed below the vent.

Preferably, a leakage hole for connecting the left cavity and the right cavity is provided at the lower end of the second partition.

Preferably, the leakage hole is arranged at the rear of the lower end of the second partition, so that the leakage hole is located at the lower part of the second partition when the sewage collecting device lies backward following the surface cleaning machine.

Preferably, the leakage holes are a plurality of through holes spaced apart on the second partition plate; and/or, a notch is provided at the edge of the second partition plate, and the leakage holes are formed by the notch and the inner wall of the barrel body.

Preferably, the sewage collection device also includes a dirt shield, which is arranged in the barrel body and outside the upper end of the sewage inlet pipe, the upper part of the dirt shield extends into the upper cavity and is connected to the barrel cover, and the air inlet ends of the vent and the exhaust channel are respectively located on the left and right sides of the dirt shield.

Preferably, the sewage inlet pipe is arranged on the front side of the barrel body, the sewage shield includes a rear baffle wall arranged on the rear side of the sewage inlet pipe, a left baffle wall arranged on the left side of the sewage inlet pipe and a right baffle wall arranged on the right side of the sewage inlet pipe, and the second partition is formed by extending the left baffle wall or the right baffle wall downward.

Preferably, the first partition is provided with a baffle extending downward from the outer edge of the vent, the lower edge of the dirt shield protrudes downward from the first partition, and the height of the dirt shield protruding downward relative to the first partition is greater than the height of the baffle extending downward relative to the first partition.

The utility model also provides a surface cleaning machine, comprising a pivotally connected body and a floor brush, the floor brush is provided with a sewage suction port and a cleaning member, the surface cleaning machine also comprises the above-mentioned sewage collecting device, the sewage collecting device can be detachably installed on the front side or the rear side of the body, the sewage collecting device is flat in shape with a left and right width greater than a front and rear thickness, the sewage collecting device follows the body to have an inclined state and a lying state, the lower end of the sewage inlet pipe can be connected to the sewage suction port, the sewage inlet pipe is located at the front part of the barrel body when the sewage collecting device is in the inclined state, and is located at the upper part of the barrel body when the sewage collecting device is in the lying state.

After adopting the above technical solution, the utility model has the following advantages:

1. In the sewage collection device provided by the utility model, a first partition is provided in the barrel body, the first partition divides the inner cavity of the barrel body into an upper cavity and a lower cavity, and the upper cavity and the lower cavity are connected by a vent. When the surface cleaning device is working, under the action of the sewage suction fan, the gas in the sewage inlet pipe and the barrel body is sucked into the sewage suction fan through the vent and the exhaust channel on the barrel cover and discharged, so that a negative pressure is formed in the sewage collection device, so that the dirt can flow from the sewage inlet pipe into the lower cavity of the barrel body along with the sewage suction airflow. The first partition can effectively reduce the dirt from directly entering the upper cavity along with the sewage suction airflow, thereby reducing the possibility of dirt entering the sewage suction fan from the exhaust channel, which is conducive to providing a better working environment for the sewage suction fan. In addition, when there is a lot of dirty liquid in the lower cavity and it has not yet reached the maximum liquid level, especially when the sewage bucket lies backward with the machine body, the dirty liquid in the lower cavity will shake and splash when the user pushes and pulls the surface cleaning machine forward and backward. The existence of the vent ensures that the airflow in the barrel can be sucked away. The setting of the first partition plays a role in isolating the splashed dirty liquid from the exhaust channel, which can effectively reduce the possibility of the splashed dirty liquid surging in the lower cavity and directly entering the exhaust channel with the sewage suction airflow, thereby reducing the risk of water ingress and damage to the sewage suction fan, which is beneficial to ensuring the stability of the working performance of the sewage suction fan.

The second partition is used to divide the lower chamber into a left chamber and a right chamber that are connected. When the surface cleaning machine is working, the dirty liquid flows from the sewage inlet pipe into the lower chamber under the action of the sewage suction airflow, and flows into the left chamber and the right chamber respectively through the second partition. Under the action of the second partition, the total dirty liquid can be divided into two smaller volumes. At the same time, the second partition can also reduce the linkage between the dirty liquid in the left chamber and the dirty liquid in the right chamber. When the volume of the dirty liquid is reduced, under the same shaking amplitude, the surge that the dirty liquid can generate is smaller, which can reduce the probability of the dirty liquid approaching or entering the ventilation port due to the surge, reduce the possibility of the dirty liquid entering the upper chamber, further reduce the probability of the dirty liquid in the upper chamber rushing to the exhaust channel, reduce the risk of water inlet damage to the sewage suction fan, which is beneficial to ensure the working performance stability of the sewage suction fan and increase the service life of the sewage suction fan. In addition, the scheme of the utility model is simple, and there is no need to use a motor-driven surge protection component, which can effectively reduce the component cost, eliminate the risk of motor inlet damage, and reduce the difficulty of users in cleaning the sewage collection device.

2. An anti-surge component is arranged below the vent. After the dirty liquid in the lower cavity generates a surge due to shaking, part of the dirty liquid may approach or enter the vent due to the surge. The anti-surge component can block the dirty liquid and reduce the dirty liquid from entering the upper cavity from the vent, thereby reducing the possibility of dirty liquid entering the sewage suction fan from the exhaust duct, reducing the risk of the sewage suction fan being damaged by water ingress, and helping to ensure the working performance stability of the sewage suction fan; in addition, the projection of the vent along the height direction of the barrel body falls within the range of the anti-surge component, so that the anti-surge component can fully cover the vent, which can effectively increase the action range of the anti-surge component, which is conducive to improving the action effect of the anti-surge component, further reducing the possibility of dirty liquid entering the upper cavity from the vent, and providing a good working environment for the sewage suction fan, so that the sewage suction fan can operate stably.

3. The surge prevention component includes a third partition with a filter hole. The third partition can block the dirty liquid, and the filter hole can also allow the dirty airflow to flow from the lower cavity into the upper cavity, thereby ensuring the normal flow of the dirty airflow. At the same time, the existence of the filter hole can divide the liquid flow upwelling to the third partition into multiple small liquid flows. When the small liquid flow passes through the filter hole, the energy is further consumed, thereby further reducing the intensity of the surge. Therefore, the height of the dirty liquid upwelling will also be reduced, so that most of the dirty liquid is weakened when passing through the third partition, and the upwelling height is greatly reduced. The overall structure of the third partition is simple and ingenious, and the volume occupied is small, which can ensure the dirt holding space of the barrel body. At the same time, there is no need to use a motor drive, which can effectively reduce the component cost, eliminate the risk of damage to the motor due to liquid inlet, and reduce the difficulty of users in cleaning the sewage collection device.

4. A leakage hole is provided at the lower end of the second partition, and the dirty liquid in the lower cavity can be distributed in the left cavity and the right cavity at the same time through the leakage hole. The leakage hole is set at the lower end of the second partition, which can ensure that when the liquid level of the dirty liquid in the lower cavity is low, the dirty liquid can be distributed in the left cavity and the right cavity at the same time, so that the second partition can effectively separate the dirty liquid, thereby reducing the surge size of the dirty liquid in the left cavity and the right cavity, which is beneficial to reducing the possibility of the dirty liquid entering the upper cavity, and further reducing the probability of the dirty liquid entering the sewage suction fan, which is beneficial to ensuring the working performance stability of the sewage suction fan; in addition, the left cavity and the right cavity are connected through the leakage hole, which can further reduce the correlation of the dirty liquid in the left cavity and the right cavity, thereby effectively reducing the surge size of the dirty liquid in the left cavity and the right cavity, and further reducing the possibility of the dirty liquid entering the upper cavity.

5. The leakage hole is located at the rear of the lower end of the second partition. When the user uses the surface cleaning machine, the sewage collecting device is in a tilted state. When entering a low space, the surface cleaning machine as a whole will lie backwards, and the sewage collecting device will also lie down. In the lying state, the leakage hole is at the lower part of the second partition, which can ensure that when the liquid level of the dirty liquid in the lower cavity is low, the dirty liquid can be distributed in the left cavity and the right cavity at the same time, so that the second partition can effectively separate the dirty liquid, thereby reducing the surge size of the dirty liquid in the left cavity and the right cavity, which is beneficial to reduce the possibility of dirty liquid entering the upper cavity, and further reduce the probability of dirty liquid entering the sewage suction fan, which is beneficial to ensure the stability of the working performance of the sewage suction fan.

6. The leakage holes are multiple through holes distributed at intervals, which can reduce the area of each through hole, thereby effectively reducing the correlation between the dirty liquid in the left cavity and the right cavity, further reducing the surge size of the dirty liquid in the left cavity and the right cavity, and further reducing the possibility of the dirty liquid entering the upper cavity; and/or, the leakage hole is formed by the notch and the inner wall of the barrel body, which can make the leakage hole closer to the lower part and the rear part of the barrel body, further ensuring that the dirty liquid can be distributed in the left cavity and the right cavity at the same time, thereby reducing the surge size of the dirty liquid in the left cavity and the right cavity.

7. The dirt shield is arranged at the upper end of the dirt inlet pipe. The dirty liquid flowing in from the dirt inlet pipe flows into the lower cavity under the restrictive effect of the dirt shield, which can prevent the dirty liquid flowing downward along the dirt shield from spreading along the partition toward the vent, thereby preventing the dirty liquid from flowing into the upper cavity through the vent. In addition, the vent and the air inlet are respectively arranged on the left and right sides of the dirt shield. When the suction airflow flows from the vent to the air inlet in the upper cavity, it needs to bypass the dirt shield. The dirt shield can be used to appropriately extend the flow path length of the suction airflow in the upper cavity. The dirt shield also has a certain blocking effect on the dirty liquid following the suction airflow, which can further increase the difficulty of the dirty liquid following the suction airflow to the exhaust channel, thereby reducing the probability of the dirty liquid entering the suction fan, which is conducive to ensuring the working performance stability of the suction fan.

8. The sewage inlet pipe is located at the front side of the barrel body. When the user uses the surface cleaning machine, the sewage collecting device is in an inclined state. At this time, the sewage inlet pipe is at a higher position in the barrel body, especially when the body is in a lying state, and the sewage collecting device is in a horizontal state or nearly horizontal state with the body. The sewage inlet pipe is located at the highest point of the sewage collecting device, which can prevent the dirty liquid collected in the barrel body from flowing back from the sewage inlet pipe to the sewage suction channel and the sewage suction port, and returning to the surface to be cleaned from the sewage suction port, thereby avoiding the problem of secondary contamination of the surface to be cleaned, and the possibility of affecting the cleaning effect of the surface cleaning device, and can improve the control performance of the sewage collecting device over the dirty liquid; in addition, the second partition is formed by extending downward from the left baffle wall or the right baffle wall, which can save the process of additionally installing the second partition, reduce the installation difficulty and production cost of the second partition, and also reduce the volume occupied by the second partition in the barrel body, thereby ensuring the dirt holding space of the barrel body.

9. The baffle extends downward from the outer edge of the vent, which can block the dirty liquid swaying in the lower chamber, and can effectively reduce the dirty liquid swaying in the lower chamber from flowing into the upper chamber through the vent. At the same time, under the action of the sewage suction airflow, part of the dirty liquid will be adsorbed on the lower side of the first baffle, and the baffle can block the dirty liquid on the first baffle, further reducing the possibility of dirty liquid flowing from the lower chamber into the upper chamber; the lower edge of the dirt shield protrudes downward from the first baffle, so that the dirty liquid flowing out of the pipe opening of the sewage inlet pipe falls into the barrel body under the shielding and reflection of the dirt shield, even if part of the dirty liquid and the baffle are The plate or the dirt shield collides and splashes, and the splashes can also be guided to its lower edge along the direction in which the dirt shield extends downward, and drip along its lower edge or flow into the lower cavity of the barrel body to be collected, which can prevent the dirty liquid flowing downward along the dirt shield from spreading along the first partition toward the vent, thereby effectively reducing the dirty liquid entering the vent; secondly, the dirt shield protrudes downward to a greater height, which can increase the distance that the suction airflow flows downward in the lower cavity, thereby allowing more dirty liquid to fall directly into the lower cavity, reducing the flow of dirty liquid along with the suction airflow, and thereby reducing the probability of dirty liquid entering the upper cavity along with the suction airflow.

10. The utility model also provides a surface cleaning machine, in which the sewage collecting device is flat in shape with a left-right width greater than a front-back thickness, and the sewage collecting device has an inclined state and a lying state following the machine body, and the lower end of the sewage inlet pipe can be connected to the sewage suction port, and the sewage inlet pipe is located at the front part of the barrel body when the sewage collecting device is in the inclined state, and is located at the upper part of the barrel body when the sewage collecting device is in the lying state, so that the entire machine body of the surface cleaning device is relatively flat, which is more conducive to entering a relatively low space such as under a bed or a sofa for cleaning when the machine body is in a lying state, thereby ensuring the cleaning effect in this state, and the dirty liquid will not flow back and secondarily pollute the surface to be cleaned, and this surface cleaning machine can better clean the ground where there are generally no obstacles or furniture blocking it, so that the surface cleaning machine has more functions, thereby meeting the cleaning needs in different environments. The sewage collecting device of the surface cleaning machine adopts the above-mentioned sewage collecting device, and uses the first partition to divide the barrel body into an upper chamber and a lower chamber, thereby reducing the entry of dirty liquid from the lower chamber into the upper chamber, and then uses the second partition to divide the lower chamber into a left chamber and a right chamber, and divides the total dirty liquid into two smaller volumes. At the same time, the second partition can also reduce the linkage between the dirty liquid in the left chamber and the dirty liquid in the right chamber, reduce the surge size of the dirty liquid in the left chamber and the right chamber, further reduce the possibility of dirty liquid entering the upper chamber, and reduce the risk of water damage to the sewage suction fan, which is beneficial to ensure the stability of the working performance of the sewage suction fan, especially when the sewage suction fan and the sewage collecting device are in a flat working state with the fuselage.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a sewage collection device according to an embodiment of the present invention;

FIG2 is a cross-sectional view of a barrel in a sewage collection device in Example 1;

FIG3 is a schematic structural diagram of a barrel cover in a sewage collection device in Example 1;

FIG4 is a partial cross-sectional view of the barrel cover in the sewage collection device of Example 1;

FIG5 is a schematic diagram of the structure of the sewage collection device in the first embodiment in which the barrel follows the body in an inclined state;

FIG6 is a schematic diagram of the structure of the sewage collection device in the first embodiment in which the barrel follows the body in a lying state;

FIG7 is a cross-sectional view of the barrel in the sewage collection device of the second embodiment;

FIG8 is a second cross-sectional view of the barrel in the sewage collection device of the second embodiment;

FIG9 is a schematic structural diagram of a barrel cover in a sewage collection device according to the second embodiment;

FIG10 is a cross-sectional view of the barrel of the sewage collection device in the third embodiment;

FIG11 is a schematic diagram of the structure of the barrel cover in the sewage collection device of Example 3;

FIG12 is a cross-sectional view of the barrel of the sewage collection device in the fourth embodiment;

13 is a schematic structural diagram of a barrel cover in a sewage collection device according to Embodiment 4;

FIG14 is a schematic structural diagram of a surface cleaning machine according to a fifth embodiment;

FIG15 is a structural diagram of a floor brush in a surface cleaning machine of Embodiment 5;

FIG16 is a schematic structural diagram of the surface cleaning machine in the fifth embodiment in which the body is in an inclined state;

FIG. 17 is a schematic structural diagram of the surface cleaning machine in the fifth embodiment in which the body is in a lying state.

In the figure, 100-floor brush, 110-sewage suction port, 120-floor brush body, 130-front cover, 140-installation cavity, 150-cleaning member, 160-scraping member, 170-floor scraper, 200-body, 210-handle, 220-sewage suction channel, 300-sewage collection device, 310-barrel body, 311-sewage inlet pipe, 320-barrel cover, 321-exhaust channel, 321a-air inlet, 321b-exhaust cavity, 321c-air outlet, 322-upper cover shell, 323-lower cover shell, 324-accommodating cavity, 331-upper cavity, 332-lower cavity, 3321-left cavity, 3322- Right cavity, 333-vent, 340-filter, 350-exhaust hood, 400-sewage suction fan, 510-first partition, 520-second partition, 521-leakage hole, 522-gap, 530-surge protection component, 531-filter hole, 540-sewage shield, 541-rear baffle wall, 542-left baffle wall, 543-right baffle wall, 550-baffle, 610-clean water bucket, 620-water distribution component, 700-control panel, 810-water level detection component, 811-water level detection electrode, 812-water level detection unit, 820-water inlet sensing component, 821-water inlet detection electrode, 822-insulating casing.

DETAILED DESCRIPTION

The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following words indicating orientation or positional relationship such as "upper", "lower", "left", "right", "longitudinal", "lateral", "inner", "outer", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device/element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

It should be noted that the surface cleaning device in the embodiment of the utility model can be a handheld cleaning machine with a handle and manually operated by a user, such as a handheld floor scrubber, a handheld floor mopper, a handheld vacuum cleaner, etc.; it can also be a cleaning robot with a driving wheel, which can control the driving wheel to move according to a program stored in itself and control the cleaning roller to clean the floor. The handheld surface cleaning device is taken as an example to further describe the utility model in combination with the drawings and specific embodiments.

Embodiment 1

In combination with Figures 1 to 6, this embodiment provides a sewage collection device 300 for a surface cleaning machine, including a barrel body 310 provided with a sewage inlet pipe 311 and a barrel cover 320 provided with an exhaust channel 321, the barrel body 310 has a maximum liquid level mark, and the sewage collection device 300 also includes a first partition 510 horizontally placed in the barrel body 310 and located above the maximum liquid level mark, the first partition 510 divides the inner cavity of the barrel body 310 into an upper cavity 331 and a lower cavity 332, the first partition 510 is provided with a ventilation hole 333 for connecting the upper cavity 331 with the lower cavity 332, a vertical second partition 520 is provided in the lower cavity 332, the second partition 520 divides the lower cavity 332 into a connected left cavity 3321 and a right cavity 3322.

In the sewage collection device 300 provided in the present embodiment, a first partition 510 is provided in the barrel body 310, and the first partition 510 divides the inner cavity of the barrel body 310 into an upper cavity 331 and a lower cavity 332, and uses the vent 333 to connect the upper cavity 331 and the lower cavity 332. When the surface cleaning machine is working, under the action of the sewage suction fan 400, the gas in the sewage inlet pipe 311 and the barrel body 310 is sucked into the sewage suction fan 400 through the vent 333 and the exhaust channel 321 on the barrel cover 320 and discharged, so that a negative pressure is formed in the sewage collection device 300, so that dirt can flow from the sewage inlet pipe 311 into the lower cavity 332 of the barrel body 310 along with the sewage suction airflow. The first partition 510 can effectively reduce the dirt from directly entering the upper cavity 331 along with the sewage suction airflow, thereby reducing the possibility of dirt entering the sewage suction fan 400 from the exhaust channel 321, which is conducive to providing a better working environment for the sewage suction fan 400. In addition, when there is a lot of dirty liquid in the lower chamber 332 and it has not yet reached the maximum liquid level, especially when the sewage bucket lies backward with the body 200, the dirty liquid in the lower chamber 332 will shake and splash when the user pushes and pulls the surface cleaning machine forward and backward. The existence of the vent 333 ensures that the airflow in the barrel body 310 can be sucked away. The setting of the first partition 510 serves to isolate the splashed dirty liquid from the exhaust channel 321, which can effectively reduce the possibility of the splashed dirty liquid surging in the lower chamber 332 and directly entering the exhaust channel 321 with the sewage suction airflow, thereby reducing the risk of water ingress and damage to the sewage suction fan 400, which is beneficial to ensuring the working performance stability of the sewage suction fan 400.

The lower chamber 332 is divided into a left chamber 3321 and a right chamber 3322 which are connected by the second partition 520. When the surface cleaning machine is working, the dirty liquid flows from the dirt inlet pipe 311 into the lower chamber 332 under the action of the dirt suction airflow, and flows into the left chamber 3321 and the right chamber 3322 respectively through the second partition 520. Under the action of the second partition 520, the total dirty liquid can be divided into two smaller volumes. At the same time, the second partition 520 can also reduce the linkage between the dirty liquid in the left chamber 3321 and the dirty liquid in the right chamber 3322. When the volume of the dirty liquid is reduced, the dirty liquid can produce less under the same shaking amplitude. The surge is smaller, which can reduce the probability of dirty liquid approaching or entering the vent 333 due to the surge, reduce the possibility of dirty liquid entering the upper chamber 331, and further reduce the probability of dirty liquid in the upper chamber 331 rushing to the exhaust channel 321, thereby reducing the risk of water ingress damage to the sewage suction fan 400, which is beneficial to ensuring the working performance stability of the sewage suction fan 400 and prolonging the service life of the sewage suction fan 400; in addition, the solution of this embodiment is simple, and there is no need to use a motor to drive the anti-surge component 530, which can effectively reduce the component cost, eliminate the risk of the motor being damaged by liquid ingress, and reduce the difficulty of users in cleaning the sewage collection device 300.

As shown in FIG. 2 and FIG. 3 , the barrel cover 320 in this embodiment includes an upper cover shell 322 and a lower cover shell 323 that are fixedly connected. The upper cover shell 322 and the lower cover shell 323 cooperate to form a receiving chamber 324 with an open top. The barrel cover 320 also includes a filter 340 that is detachably installed in the receiving chamber 324. The filter 340 is at the top of the exhaust passage 321. After the sewage airflow passes through the exhaust passage 321, it enters the filter 340 and flows to the sewage suction fan 400 after being filtered by the filter 340. The filter 340 can further reduce the dirty liquid carried in the sewage airflow, reduce the risk of the sewage suction fan 400 being damaged by water ingress, and is conducive to ensuring the working performance stability of the sewage suction fan 400. As a preferred solution of this embodiment, the filter 340 includes a filter screen and a HEPA member. The filter screen is located at the bottom of the HEPA member. The filter screen can perform gas-solid separation on the sewage airflow, and the HEPA member can perform gas-liquid separation on the sewage airflow. As an optional solution of this embodiment, the cavity wall of the accommodating cavity 324 can be formed by the upper cover shell 322, or by the lower cover shell 323, or by the upper cover shell 322 and the lower cover shell 323.

As shown in combination with FIG. 2 and FIG. 3 , in this embodiment, the lower end of the second partition plate 520 is provided with a leakage hole 521 for connecting the left cavity 3321 and the right cavity 3322. The dirty liquid in the lower cavity 332 can be distributed to the left cavity 3321 and the right cavity 3322 at the same time through the leakage hole 521. The leakage hole 521 is arranged at the lower end of the second partition plate 520, so that when the liquid level of the dirty liquid in the lower cavity 332 is low, the dirty liquid can be distributed to the left cavity 3321 and the right cavity 3322 at the same time, so that the second partition plate 520 can effectively separate the dirty liquid, thereby reducing the level of the dirty liquid in the left cavity 3321. The surge size of the dirty liquid in the left cavity 3321 and the right cavity 3322 is beneficial to reducing the possibility of the dirty liquid entering the upper cavity 331, further reducing the probability of the dirty liquid entering the suction fan 400, and ensuring the stability of the working performance of the suction fan 400; in addition, the left cavity 3321 and the right cavity 3322 are connected through the leakage hole 521, which can further reduce the correlation between the dirty liquid in the left cavity 3321 and the right cavity 3322, thereby effectively reducing the surge size of the dirty liquid in the left cavity 3321 and the right cavity 3322, and further reducing the possibility of the dirty liquid entering the upper cavity 331.

In order to further ensure that the dirty liquid can be distributed in the left cavity 3321 and the right cavity 3322 at the same time, the leakage hole 521 in this embodiment is arranged at the rear of the lower end of the second partition 520, so that the leakage hole 521 is located at the lower part of the second partition 520 when the sewage collection device 300 follows the surface cleaning machine to lie down backwards. When the user uses the surface cleaning machine, the sewage collection device 300 is in an inclined state. When entering a low space, the surface cleaning machine will lie down as a whole, and the sewage collection device 300 will also lie down. The leakage hole 521 is located at the lower part of the second partition 520, which can ensure that when the liquid level of the dirty liquid in the lower chamber 332 is low, the dirty liquid can be distributed in the left cavity 3321 and the right cavity 3322 at the same time, so that the second partition 520 can effectively separate the dirty liquid, thereby reducing the surge size of the dirty liquid in the left cavity 3321 and the right cavity 3322, which is beneficial to reducing the possibility of dirty liquid entering the upper chamber 331, and further reducing the probability of dirty liquid entering the sewage suction fan 400, which is beneficial to ensuring the working performance stability of the sewage suction fan 400.

As shown in Figures 2 and 3, the leakage holes 521 described in this embodiment are multiple through holes distributed at intervals on the second partition plate 520. The through holes can minimize the area of the through holes while ensuring that the left cavity 3321 and the right cavity 3322 are connected, thereby effectively reducing the correlation between the dirty liquid in the left cavity 3321 and the right cavity 3322, further reducing the surge size of the dirty liquid in the left cavity 3321 and the right cavity 3322, and further reducing the possibility of the dirty liquid entering the upper cavity 331.

2 to 4 , the sewage collecting device 300 described in this embodiment also includes a dirt shielding cover 540, which is arranged in the barrel body 310 and outside the upper end of the sewage inlet pipe 311, and the upper part of the dirt shielding cover 540 extends into the upper cavity 331 and is connected to the barrel cover 320, and the air inlet ends of the vent 333 and the exhaust channel 321 are respectively located on the left and right sides of the dirt shielding cover 540, and the sewage flowing into the sewage inlet pipe 311 flows into the lower cavity 332 under the restriction of the dirt shielding cover 540, so that the sewage flowing downward along the dirt shielding cover 540 can be prevented from spreading along the partition toward the vent 333, thereby preventing the sewage from flowing into the upper cavity 331 through the vent 333. In addition, the vent 333 and the air inlet end are respectively arranged on the left and right sides of the dirt shielding cover 540. The sewage suction airflow needs to bypass the dirt shielding cover 540 when flowing from the vent 333 to the air inlet end in the upper cavity 331. The dirt shielding cover 540 can be used to appropriately extend the flow path length of the sewage suction airflow in the upper cavity 331. The dirt shielding cover 540 also has a certain blocking effect on the dirty liquid following the sewage suction airflow, which can further increase the difficulty of the dirty liquid following the sewage suction airflow to flow to the exhaust channel 321, thereby reducing the probability of the dirty liquid entering the sewage suction fan 400, which is beneficial to ensuring the working performance stability of the sewage suction fan 400.

As shown in FIG. 3 , the dirt shield 540 in this embodiment includes a rear baffle 541 disposed at the rear side of the dirt inlet pipe 311, a left baffle 542 disposed at the left side of the dirt inlet pipe 311, and a right baffle 543 disposed at the right side of the dirt inlet pipe 311. The dirt inlet pipe 311 is disposed at the front side of the barrel body 310. The dirt shield 540 and the front side of the barrel body 310 form a barrier for the upper end of the dirt inlet pipe 311. While ensuring that the dirty liquid does not directly enter the upper chamber 331 along with the dirt suction airflow, the setting of the front baffle wall of the dirt shield 540 can be reduced, thereby reducing the volume of the dirt shield 540, reducing the difficulty of setting the dirt shield 540, and facilitating increasing the dirt holding space of the lower chamber 332. The top end of the rear baffle wall 541 described in the present embodiment is curved and extends downward, and the rear baffle wall 541 can guide the sewage suction airflow, accelerate the sewage suction airflow to enter the lower cavity 332, reduce the possibility of turbulence of the sewage suction airflow in the dirt shielding cover 540, make the flow of the sewage suction airflow smoother, and can effectively increase the flow rate of the sewage suction airflow, and at the same time can also reduce the power output of the sewage suction fan 400; in addition, the curved shape of the rear baffle wall 541 can reduce the generation of dead angles, and at the same time, the rear baffle wall 541 can also guide the dirty liquid to fall into the lower cavity 332, reduce the possibility of dirty liquid remaining in the rear baffle wall 541, and thereby reduce the difficulty of cleaning the dirt shielding cover 540.

As shown in combination with Figures 5 and 6, the sewage inlet pipe 311 in this embodiment is located at the front side of the barrel body 310. When the sewage collecting device 300 rotates backward with the surface cleaning machine to a lying state, the sewage inlet pipe 311 is located at a higher position in the barrel body 310. Especially when the body 200 is in a lying state, the sewage collecting device 300 is in a horizontal state or a nearly horizontal state with the body 200. The sewage inlet pipe 311 is located at the highest point of the sewage collecting device 300, which can prevent the sewage collected in the barrel body 310 from flowing back from the sewage inlet pipe 311 to the sewage suction channel 220 and the sewage suction port, and return to the surface to be cleaned from the sewage suction port, thereby avoiding the problem of secondary contamination of the surface to be cleaned, which may affect the cleaning effect of the surface cleaning device, and improve the control performance of the sewage collecting device on the sewage; at the same time, the vent 333 is also located at the upper part of the first partition 510, which can reduce the possibility of the sewage flowing out of the sewage inlet pipe 311 and affecting the cleaning effect of the surface cleaning machine, and improve the control performance of the sewage collecting device 300 on the sewage.

The sewage collection device 300 described in this embodiment follows the surface cleaning machine to have a tilted state and a lying state. As shown in FIG5 , when the surface cleaning machine is in normal use, its body 200 tilts backward as a whole. At this time, the sewage collection device 300 tilts backward following the surface cleaning machine, and an angle α is formed between the sewage collection device 300 and the ground. The angle α can be set to any reasonable size within the range of 45° to 85°. As shown in FIG6 , when the surface cleaning machine needs to clean a low space during operation, the body 200 can also be rotated backward to a lying state. At this time, the sewage collection device 300 follows the body 200 to rotate to a lying state. In the lying state, an angle β is formed between the sewage collection device 300 and the ground. The angle β can be set to a reasonable size such as 3°, 5°, 8°, 10°, etc. Of course, the sewage collection device 300 can also be parallel to the ground when it is in a lying state.

As shown in Figure 3, the left baffle wall 542 in this embodiment extends downward to form the second partition 520, which can save the process of additionally installing the second partition 520, reduce the installation difficulty and production cost of the second partition 520, and also reduce the volume occupied by the second partition 520 in the barrel body 310, thereby ensuring the dirt-containing space of the barrel body 310; of course, it can be understood that in other embodiments, the second partition 520 can also be formed by the downward extension of the right baffle 550.

As shown in combination with Figures 2 and 3, in this embodiment, the first partition 510 is provided with a baffle 550 extending downward from the outer edge of the ventilation hole 333, and the lower edge of the dirt shield 540 protrudes downward from the first partition 510. The height of the dirt shield 540 protruding downward relative to the first partition 510 is greater than the height of the baffle 550 extending downward relative to the first partition 510. The baffle 550 extends downward from the outer edge of the ventilation hole 333, which can block the dirty liquid swaying in the lower chamber 332, and can effectively reduce the dirty liquid swaying in the lower chamber 332 from flowing into the upper chamber 331 through the ventilation hole 333. At the same time, under the action of the sewage suction airflow, part of the dirty liquid will be adsorbed on the lower side of the first partition 510, and the baffle 550 can block the dirty liquid on the first partition 510, further reducing the possibility of dirty liquid flowing from the lower chamber 332 into the upper chamber 331; the lower edge of the dirt shield 540 protrudes downward Because of the first partition 510, the dirty liquid flowing out from the pipe mouth of the sewage inlet pipe 311 falls into the barrel body 310 under the shielding and reflection of the dirt shielding cover 540. Even if a part of the dirty liquid collides with the baffle 550 or the dirt shielding cover 540 and splashes, it can be guided to its lower edge along the downward extension direction of the dirt shielding cover 540, and drip along its lower edge or flow into the lower cavity 332 of the barrel body 310 to be collected, which can prevent the dirty liquid flowing downward along the dirt shielding cover 540 from spreading along the first partition 510 toward the vent 333, thereby effectively reducing the dirty liquid entering the vent 333; secondly, the dirt shielding cover 540 protrudes downward to a greater height, which can increase the distance that the sewage suction airflow flows downward in the lower cavity 332, thereby allowing more dirty liquid to fall directly into the lower cavity 332, reducing the flow of dirty liquid along with the sewage suction airflow, thereby reducing the probability of dirty liquid entering the upper cavity 331 along the sewage suction airflow.

As shown in FIG4 , the lower cover shell 323 in this embodiment is provided with an exhaust hood 350 extending in the height direction of the sewage collection device 300. The lower edge of the exhaust hood 350 is connected to or sealed against the top of the dirt shield 540, and the upper edge of the exhaust hood 350 is circumferentially sealed with the lower edge of the accommodating chamber 324. The exhaust passage 321 includes an air inlet 321a and an air outlet 321c connected through an exhaust chamber 321b. The exhaust chamber 321b is formed by the exhaust hood 350. The air inlet 321a is provided on the side wall of one vertical side of the exhaust hood 350, and the air outlet 321c is provided on the top side of the exhaust hood 350. The air inlet 321a connects the upper chamber 331 with the exhaust chamber 321b, and the air outlet 321c connects the exhaust chamber 321b with the accommodating chamber 324. As a preferred solution of this embodiment, the vent 333 is preferably arranged at the front side of the left end or the right end of the first partition 510, so that the vent 333 is as high as possible on the first partition 510 when the sewage collection device 300 follows the surface cleaning machine to lie down backward. The air inlet 321a is arranged on the vertical side wall of the exhaust cover 350 on the side facing away from the vent 333, and the vent 333 and the air inlet 321a are respectively located on the left and right sides of the dirt shield 540, so that the air inlet 321a and the vent 333 are respectively located on the left and right sides of the barrel cover 320, so that the air inlet 321a and the vent 333 are as far away from each other as possible, which can appropriately extend the flow path length of the sewage suction airflow in the upper chamber 331, and the sewage suction airflow flowing through the upper chamber 331 needs to bypass the dirt shield 540, and the dirt shield 540 has a certain blocking effect on the sewage flowing with the sewage suction airflow. The exhaust passage 321 is arranged as far forward as possible relative to the upper chamber 331. Furthermore, the air outlet 321c is arranged as far forward as possible relative to the accommodating chamber 324, so that the exhaust passage 321 can be as far forward as possible when the sewage collecting device 300 follows the surface cleaning machine to lie backward.

As a preferred solution of this embodiment, the extension direction of the air inlet 321a is approximately perpendicular to the extension direction of the air outlet 321c. Correspondingly, the flow direction of the suction airflow at the air inlet 321a is also approximately perpendicular to the flow direction at the air outlet 321c, so that the suction airflow has a larger flow angle when flowing from the air inlet 321a to the air outlet 321c. The flow angle can be used to throw out the dirty liquid carried by the suction airflow, thereby preventing the dirty liquid from following the suction airflow through the exhaust channel 321 and flowing to the filter element 340 in the accommodating chamber 324.

As shown in combination with FIG. 2 and FIG. 3, in order to enable the sewage suction fan 400 to stop working in time when the sewage bucket reaches the highest liquid level, the bucket cover 320 is provided with two water level detection members 810 extending downward into the lower cavity 332, the two water level detection members 810 are spaced apart from each other and are respectively located in the left cavity 3321 and the right cavity 3322, the water level detection member 810 includes an insulating shell and a water level detection electrode 811 inserted in the insulating shell, the insulating shells of the two water level detection members 810 are provided with an exposure hole on the side facing away from the dirt shield 540, the exposure hole is lower than the lower edge of the baffle 550, and the water level detection member 810 forms a water level detection electrode at the part of the insulating shell exposed outside the exposure hole. The part 812, i.e., the water level detection part 812, is arranged on the side of the water level detection part 810 facing away from the dirt shield 540 and is arranged below the baffle 550, so as to prevent the dirty liquid flowing along the dirt shield 540 from spreading to the water level detection part 812 and causing the water level detection part 810 to be incorrectly turned on, which is conducive to improving the accuracy of the water level detection part 810 in detecting the water level in the lower chamber 332. When the dirty liquid in the lower chamber 332 spreads to the water level detection part 810 and makes the water level detection part 810 turned on, the liquid level in the lower chamber 332 reaches the preset maximum liquid level. At this time, the suction fan 400 stops working to prevent the lower chamber 332 from continuing to enter the dirt and causing the sewage to overflow. Of course, it can be understood that in other embodiments, the insulating shell can also be integrally formed with the lower cover shell 323 or the upper cover shell 322, or it can be formed separately and fixed on the barrel cover 320.

As shown in FIG. 2 , in the present embodiment, a water inlet sensor 820 is provided in the upper chamber 331. When the water inlet sensor 820 passes through the sewage in the upper chamber 331, it indicates that a large amount of sewage has entered the upper chamber 331, and the sewage suction fan 400 needs to stop working in time to prevent the sewage in the upper chamber 331 from flowing toward the sewage suction fan 400 under negative pressure suction, thereby avoiding the risk of water inflow and damage to the sewage suction fan 400. Specifically, the water inlet sensor 820 includes an insulating shell 822 and a water inlet detection electrode 821 inserted in the insulating shell 822. The lower end of the water inlet detection electrode 821 extends downward from the insulating shell 822 to form a water inlet sensing portion, and the water inlet sensing portion is lower than the air inlet 321a of the exhaust channel 321. In this embodiment, two water inlet sensors 820 are provided and are respectively located on the left and right sides of the dirt shield 540, that is, one water inlet sensor 820 is provided on the left side of the left baffle 542, and the other water inlet sensor 820 is provided on the right side of the right baffle 543. It can be understood that the insulating shell 822 can be integrally formed with the lower cover shell 323 or the upper cover shell 322, or can be separately formed and then fixed on the barrel cover 320.

Embodiment 2

As shown in FIGS. 7 to 9 , in the present embodiment, the left cavity 3321 is provided with a surge-proof member 530 located below the vent 333. The projection of the vent 333 along the height direction of the barrel body 310 falls within the range of the surge-proof member 530. The surge-proof member 530 is provided below the vent 333. After the dirty liquid in the lower cavity 332 generates a surge due to shaking, part of the dirty liquid may approach or enter the vent 333 due to the surge. The surge-proof member 530 can block the dirty liquid, reduce the dirty liquid from entering the upper cavity 331 from the vent 333, and thereby reduce the dirty liquid from entering the exhaust passage 321 into the dirt suction fan. 400, reducing the risk of water ingress and damage to the sewage suction fan 400, which is beneficial to ensuring the working performance stability of the sewage suction fan 400; in addition, the projection of the vent 333 along the height direction of the barrel body 310 falls within the range of the anti-surge component 530, so that the anti-surge component 530 can fully cover the vent 333, which can effectively increase the range of action of the anti-surge component 530, which is beneficial to improving the effect of the anti-surge component 530, and further reducing the possibility of dirty liquid entering the upper cavity 331 from the vent 333, which can provide a good working environment for the sewage suction fan 400 and ensure the stable operation of the sewage suction fan 400. Of course, it is understandable that in other embodiments, the setting position of the surge protection component 530 corresponds to the setting position of the vent 333. When the vent 333 is in the left cavity 3321, the surge protection component 530 is correspondingly set in the left cavity 3321, and when the vent 333 is in the right cavity 3322, the surge protection component 530 can also be set in the right cavity 3322.

The anti-surge member 530 in this embodiment includes a third partition with a filter hole 531, the third partition is horizontally placed below the vent 333, one side of the third partition is connected to the lower end of the right baffle 543, and the other edges are kept in close contact with the inner wall of the barrel body 310, that is, the third partition, the right baffle 543 and the inner wall of the barrel body 310 form a enclosure around the vent 333, so that the sewage airflow can only enter the vent 333 through the filter hole 531 on the third partition, and at the same time, the sewage needs to pass through the anti-surge member 530 before it has a chance to flow into the upper chamber 331, which can improve the blocking effect of the anti-surge member 530 on the sewage. In addition, the filter hole 531 can make the sewage suction air flow flow from the lower chamber 332 into the upper chamber 331, ensuring the normal flow of the sewage suction air flow. At the same time, the existence of the filter hole 531 can divide the liquid flow that surges to the third partition into multiple small liquid flows. When the small liquid flow passes through the filter hole, the energy is further consumed, which further reduces the intensity of the surge. Therefore, the height of the sewage surge will also be reduced, so that most of the sewage is weakened when passing through the third partition, and the surge height is greatly reduced, avoiding the anti-surge component 530 from burdening the operation of the sewage suction fan 400, ensuring that the sewage suction fan 400 can operate normally. In addition, the overall structure of the third partition is simple and ingenious, and the volume occupied is small, which can ensure the sewage holding space of the barrel body 310. At the same time, there is no need to use a motor drive, which can effectively reduce the component cost, and can also eliminate the risk of damage to the motor when entering the liquid, and can also reduce the difficulty of users to clean the sewage collection device 300.

The other structures of the second embodiment are the same as those of the first embodiment and will not be described in detail here.

Embodiment 3

As shown in Figures 10 and 11, the leakage hole 521 in this embodiment is a through hole, which is located at the rear of the lower end of the second partition 520. The overall area of the through hole is large, so that the dirty liquid can pass through normally, reducing the possibility of the dirty liquid blocking the through hole, thereby ensuring that the left cavity 3321 and the right cavity 3322 remain connected; in addition, the through hole in this embodiment is rectangular, and it can be understood that the through hole can also be circular, square or polygonal.

The other structures of the third embodiment are the same as those of the first embodiment and will not be described in detail here.

Embodiment 4

As shown in FIG. 12 and FIG. 13 , in this embodiment, a notch 522 is provided at the edge of the second partition 520, and the leakage hole 521 is formed by the notch 522 and the inner wall of the barrel body 310, so that the leakage hole 521 can be closer to the lower part and the rear part of the barrel body 310, further ensuring that the dirty liquid can be distributed in the left cavity 3321 and the right cavity 3322 at the same time, thereby reducing the surge size of the dirty liquid in the left cavity 3321 and the right cavity 3322. Of course, it can be understood that the second partition 520 can also be provided with a through hole or a through hole while the notch 522 is provided at the edge.

The other structures of the fourth embodiment are the same as those of the first embodiment, and will not be described in detail here.

Embodiment 5

As shown in Figures 14 to 17, this embodiment shows a surface cleaning machine, including a body 200 and a floor brush 100 that are pivotally connected. The floor brush 100 is provided with a sewage suction port 110 and a cleaning member 150. A detachable sewage collecting device 300 and a sewage suction fan 400 for providing suction are provided on the surface of the body 200. The sewage collecting device 300 adopts the sewage collecting device 300 described in Example 1, Example 2, or Example 3. The sewage collecting device 300 has an inclined state and a lying state following the body 200. The lower end of the sewage inlet pipe 311 can be connected to the sewage suction port 110. The sewage inlet pipe 311 is located at the front part of the barrel body 310 when the sewage collecting device 300 is in the inclined state, and the sewage inlet pipe 311 is located at the upper part of the barrel body 310 when the sewage collecting device 300 is in the lying state.

In this embodiment, the top of the body 200 is provided with a handle 210, and the bottom of the body 200 is pivotally connected to the rear side of the floor brush 100. The floor brush 100 includes a floor brush body 120 and a front cover 130 detachably mounted on the front side of the floor brush body 120. When the front cover 130 is snap-fitted and mounted on the front side of the floor brush body 120, the two cooperate to form an installation cavity 140. A cleaning member 150 driven by a motor is provided in the installation cavity 140. The cleaning member 150 can adopt a single roller brush structure, a double roller brush structure with a front and rear interval, or a crawler mop structure with two rollers of the same outer diameter or a thin front and a thick rear. No excessive restrictions are made here. The surface cleaning device also includes a clean water bucket 610 for supplying liquid to the cleaning element 150. The clean water bucket 610 can be detachably installed on the front or rear side of the body 200. The liquid in the clean water bucket 610 can be sprayed toward the cleaning element 150 through the water dividing element 620 on the floor brush 100 under the pumping action of the pump, so that the cleaning element 150 can absorb the liquid and moisten it.

In this embodiment, the sewage suction port 110 is provided on the floor brush body 120, the sewage suction port 110 is located behind the installation cavity 140 and communicated with the installation cavity 140, a scraping member 160 for scraping the cleaning member 150 is provided above the sewage suction port 110, and an elastic floor scraper 170 is provided below the sewage suction port 110. A sewage suction channel 220 for connecting the sewage suction port 110 and the sewage bucket is provided between the body 200 and the floor brush 100, one end of the sewage suction channel 220 is communicated with the sewage suction port 110, and the other end of the sewage suction channel 220 is detachably connected to the lower end of the sewage inlet pipe 311.

In this embodiment, the sewage collection device 300 can be detachably mounted on the body 200, and the sewage suction fan 400 is arranged in the body 200 and located above the sewage bucket. A control panel 700 is arranged in the body 200, and the sewage suction fan 400, motor, pump and other electrical components are controlled by the control panel 700. As an alternative to this embodiment, the sewage suction fan 400 can also be used as a component of the suction power source assembly, and the suction power source assembly can be detachably mounted on the body 200, and the suction power source assembly can be connected to a dust collection accessory for dry dust collection.

In this embodiment, the surface cleaning machine has a tilted state and a lying state. As shown in FIG16, when the surface cleaning machine is in normal use, its body 200 is tilted backward as a whole. At this time, the body 200 of the surface cleaning machine is tilted backward, and an angle α is formed between the body 200 and the ground. The angle α can be set to any reasonable size within the range of 45° to 85°; as shown in FIG17, when the surface cleaning machine needs to clean a low space during operation, the body 200 can also be rotated backward to a lying state. When the body 200 is in the lying state, an angle β is formed between the body 200 and the ground. The angle β can be set to a reasonable size such as 3°, 5°, 8°, 10°, etc. Of course, the body 200 can also be parallel to the ground when it is in the lying state. It should be noted that in addition to the tilted state and the lying state, the body 200 of the surface cleaning machine can also form other reasonable sizes such as 20°, 30°, 90°, etc. with the ground to meet the usage habits of users of different heights.

In this embodiment, the sewage collection device 300 is detachably mounted on the rear side of the fuselage 200. In order to reasonably control the front and rear dimensions of the fuselage 200 so that the fuselage 200 lying backward can be extended into a low space, the width of the sewage collection device 300 in the left and right direction is greater than the thickness in the front and rear direction. The sewage collection device 300 is generally flat. Accordingly, the width of the barrel cover 320 in the left and right direction is greater than the thickness in the front and rear direction. When the sewage collection device 300 is installed on the fuselage 200, the fuselage 200 is relatively flat as a whole. It can be understood that the clean water bucket 610 and the sewage collection device 300 can be arranged at the front or rear side of the fuselage 200 at the same time, or can be arranged at the front and rear sides of the fuselage 200 respectively. The clean water bucket 610 can also be arranged on the top of the floor brush 100. The sewage collecting device 300 is flat in shape with a left-right width greater than a front-back thickness. The sewage collecting device 300 follows the body 200 to have an inclined state and a lying state. The lower end of the sewage inlet pipe 311 can be connected to the sewage suction port. The sewage inlet pipe 311 is located at the front part of the barrel body 310 when the sewage collecting device 300 is in the inclined state, and the sewage inlet pipe 311 is located at the upper part of the barrel body 310 when the sewage collecting device 300 is in the lying state, so that the entire body 200 of the surface cleaning device is also relatively flat, which is more conducive to entering a lower space such as under a bed or a sofa for cleaning when the body 200 is in a lying state, thereby ensuring the cleaning effect in this state, and the dirty liquid will not flow back and secondary pollute the surface to be cleaned. This surface cleaning machine can better clean the ground where there are generally no obstacles or furniture blocking it, so that the surface cleaning machine has more functions to meet the cleaning needs in different environments.

In this embodiment, the sewage collection device 300 may be a structure defined in any one of the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment.

The other structures of the fifth embodiment are the same as those of the first embodiment and will not be described in detail here.

In addition to the above preferred embodiments, the present invention has other implementation modes. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not deviate from the spirit of the present invention, they should all fall within the scope defined in the claims of the present invention.

Claims (10)

1. A sewage collection device for a surface cleaning machine, comprising a barrel body provided with a sewage inlet pipe and a barrel cover provided with an exhaust channel, the barrel body having a maximum liquid level mark, characterized in that the sewage collection device also includes a first partition placed horizontally in the barrel body and above the maximum liquid level mark, the first partition divides the inner cavity of the barrel body into an upper cavity and a lower cavity, a vent for connecting the upper cavity and the lower cavity is provided on the first partition, a second partition placed vertically in the lower cavity, the second partition divides the lower cavity into a left cavity and a right cavity that are connected. 2. A sewage collection device for a surface cleaning machine according to claim 1, characterized in that a surge-proof component is provided in the left cavity or the right cavity below the vent, and the projection of the vent along the height direction of the barrel body falls within the range of the surge-proof component. 3. A sewage collection device for a surface cleaning machine according to claim 2, characterized in that the surge protection member comprises a third partition with filtering holes, and the third partition is horizontally placed below the ventilation opening. 4. A sewage collection device for a surface cleaning machine according to claim 1, characterized in that a leakage hole for connecting the left cavity and the right cavity is provided at the lower end of the second partition. 5. A sewage collection device for a surface cleaning machine according to claim 4, characterized in that the leakage hole is arranged at the rear of the lower end of the second partition, so that the leakage hole is located at the lower part of the second partition when the sewage collection device lies backward following the surface cleaning machine. 6. A sewage collection device for a surface cleaning machine according to claim 4, characterized in that the leakage holes are multiple through holes spaced apart on the second partition; and/or a notch is provided at the edge of the second partition, and the leakage holes are formed by the notch and the inner wall of the barrel body. 7. A sewage collection device for a surface cleaning machine according to claim 1, characterized in that the sewage collection device also includes a dirt shield, which is arranged in the barrel body and outside the upper end of the sewage inlet pipe, the upper part of the dirt shield extends into the upper cavity and is connected to the barrel cover, and the air inlet ends of the vent and the exhaust channel are respectively located on the left and right sides of the dirt shield. 8. A sewage collection device for a surface cleaning machine according to claim 7, characterized in that the sewage inlet pipe is arranged on the front side of the barrel body, the sewage shield includes a rear baffle wall arranged on the rear side of the sewage inlet pipe, a left baffle wall arranged on the left side of the sewage inlet pipe and a right baffle wall arranged on the right side of the sewage inlet pipe, and the second partition is formed by extending the left baffle wall or the right baffle wall downward. 9. A sewage collection device for a surface cleaning machine according to claim 7, characterized in that the first partition is provided with a baffle extending downward from the outer edge of the vent, the lower edge of the dirt shield protrudes downward from the first partition, and the height of the dirt shield protruding downward relative to the first partition is greater than the height of the baffle extending downward relative to the first partition. 10. A surface cleaning machine, comprising a pivotally connected body and a floor brush, the floor brush being provided with a sewage suction port and a cleaning member, characterized in that the surface cleaning machine further comprises a sewage collecting device as described in any one of claims 1 to 9 above, the sewage collecting device being detachably mounted on the front or rear side of the body, the sewage collecting device being flat in shape with a left-right width greater than a front-to-back thickness, the sewage collecting device following the body to have an inclined state and a lying state, the lower end of the sewage inlet pipe being connectable to the sewage suction port, the sewage inlet pipe being located at the front part of the barrel body when the sewage collecting device is in an inclined state, and being located at the upper part of the barrel body when the sewage collecting device is in a lying state.