CN109208271B - Draining pump and washing machine using same - Google Patents
Draining pump and washing machine using same Download PDFInfo
- Publication number
- CN109208271B CN109208271B CN201710552784.2A CN201710552784A CN109208271B CN 109208271 B CN109208271 B CN 109208271B CN 201710552784 A CN201710552784 A CN 201710552784A CN 109208271 B CN109208271 B CN 109208271B
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- valve
- drain
- drainage
- pump
- valve plug
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- 238000005406 washing Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 238000007789 sealing Methods 0.000 claims abstract description 83
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 15
- 239000003657 drainage water Substances 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 12
- 230000005484 gravity Effects 0.000 description 11
- 239000002351 wastewater Substances 0.000 description 5
- 235000019645 odor Nutrition 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a drainage pump, which comprises a water outlet, wherein a one-way valve is arranged at the water outlet and comprises a valve body, the valve body comprises a valve cavity and a sealing table arranged at the upstream of the valve cavity, a valve plug is movably arranged in the valve cavity, and the valve plug moves to open a drainage passage of the sealing table under the action of drainage water pressure. The drainage pump effectively avoids pollution caused by residual water in the drainage pipeline flowing back to the drainage pump and even the washing outer barrel; effectively preventing odor mould in the sewer from entering the washing machine; noise of the drainage pump is effectively reduced; and the user experience is improved, and convenience is provided for the user.
Description
Technical Field
The invention relates to the field of washing machines, in particular to a drainage pump and a washing machine using the drainage pump.
Background
At present, the foreign washing machines generally adopt an upper drainage mode to drain wastewater, and most domestic washing machines also adopt an upper drainage mode, wherein the upper drainage is that the wastewater is lifted by a drainage pump and then drained when the washing machines drain water. However, the existing drainage pump for upward drainage has the following problems: (1) In the final stage of the existing drain pump, once the drain pump is stopped, water in the drain pipe can flow back into the drain pump chamber and even back to the washing outer barrel. Residual water can lead to mould propagation and scale generation; (2) The drain pump connection drain hose of the existing washing machine is generally connected to the bathroom floor drain, and peculiar smell in the sewer can enter the drain pump along the drain hose and enter the washing outer barrel together, so that the washing machine is seriously opened with peculiar smell; (3) In the final stage of the conventional drainage pump, the drainage pump cavity is mixed with air, so that great noise can be generated, and the experience of consumers is seriously affected.
The invention discloses a draining pump assembly and a washing machine with the draining pump assembly, and the draining pump assembly comprises: the drainage pump is provided with a containing cavity for containing the impeller, and is provided with a water inlet pipeline and a water outlet pipeline which are communicated with the containing cavity; the water draining pipe is communicated with the water outlet pipeline; the check valve block is movably arranged on one of the drain pipe and the water outlet pipeline between the first position and the second position so as to open and close the water outlet pipeline, the check valve block is formed into a one-way valve block which is conducted unidirectionally from the accommodating cavity to the direction of the water outlet pipeline, when the check valve block is positioned at the first position, the water outlet pipeline is conducted, and when the check valve block is positioned at the second position, the water outlet pipeline is disconnected. According to the drainage pump assembly provided by the embodiment of the invention, although the noise of the drainage pump assembly can be properly reduced, the non-return effect of the non-return valve plate is insensitive, the non-return valve plate is difficult to be located at the second position in time after the drainage is finished, meanwhile, the peculiar smell in a sewer is difficult to be prevented from entering the drainage pump along the drainage hose, and in addition, the non-return valve plate is more difficult to be arranged at the second position after sundries or flock are accumulated, so that the water outlet pipeline is continuously disconnected, and the waste water is caused to flow reversely.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a drainage pump which can prevent the backflow of wastewater and/or smell and reduce noise and a washing machine using the drainage pump.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that: the utility model provides a drain pump, includes the delivery port, delivery port department is provided with the check valve, and this check valve includes the valve body, the valve body includes a valve pocket and sets up the sealing station in the valve pocket upper reaches, movable in the valve pocket is equipped with a valve plug, the valve plug removes the drainage passageway of opening the sealing station under the drainage water pressure effect.
Further, a valve cover is arranged at the downstream of the valve cavity, the sealing table, the valve cover and the valve body form the valve cavity together, and at least one valve cover drain hole is formed in the valve cover.
Further, a baffle is arranged at the downstream of the valve cavity, the sealing platform and the baffle form the valve cavity together with the valve body, the baffle is communicated with a drainage pipeline, and preferably, the baffle is a retracted pipeline.
Further, a drain hole is formed in the sealing table, the valve plug moves away from or seals the drain hole under the action of pressure at two ends of the sealing table, and the check valve opens the drain pump to drain water unidirectionally or closes the drain pump to drain water unidirectionally.
Further, the valve plug is at least partially larger than the smallest dimension of the drain hole on the sealing table, preferably, the drain hole on the sealing table is gradually larger downstream of the valve cavity, and the size of the corresponding part of the valve plug and the drain hole is correspondingly larger.
Further, the valve cover/baffle table is further provided with a limiting structure for preventing the valve plug from blocking the valve cover/baffle table, and preferably, the limiting structure is a protrusion extending towards the sealing table.
Further, the valve plug is provided with a limiting structure for preventing the valve plug from blocking the valve cover/baffle, and preferably, the limiting structure is a protrusion extending towards the valve cover/baffle.
Further, the check valve further comprises an elastic element, the elastic element is abutted between the valve plug/baffle table and the valve cover, the valve plug seals the water drain hole on the sealing table to close the check valve under the elastic action of the elastic element, and preferably, the elastic element is a spring.
Further, the valve plug seals the drain hole on the sealing platform under the action of self gravity to close the one-way valve, preferably, the valve plug is provided with a spherical valve plug, and the limiting structure is arranged on the valve cover/baffle platform.
The invention also provides a washing machine, which comprises the draining pump, wherein the draining pump also comprises a pump wheel driven by a motor, when the draining pump drains water, the draining pump is started, the pump wheel starts to rotate under the action of the motor, the valve plug overcomes the elasticity of the elastic element and/or overcomes the gravity of the valve plug to move under the action of the draining water pressure, and the valve plug leaves a draining hole on the sealing table, and the one-way valve is opened to drain water from the draining pump; when the drainage pump does not drain water, the pump wheel stops rotating, the drainage water pressure received by the valve plug disappears, the valve plug returns to move under the action of the elasticity or self gravity of the elastic element to seal the drainage hole on the sealing table, the one-way valve is closed, and the drainage pump does not drain water.
Further, the drainage height of the drainage pump is more than or equal to 10 cm.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.
1. The pollution caused by the residual water in the drainage pipeline flowing back to the drainage pump and even the washing outer barrel is effectively avoided.
2. Effectively prevents odor mould in the sewer from entering the washing machine.
3. Noise of the drainage pump is effectively reduced.
4. And the user experience is improved, and convenience is provided for the user.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a cross-sectional view of a drain pump of the present invention;
FIG. 2 is a schematic diagram of a drain pump drain stage of the present invention;
FIG. 3 is a cross-sectional view of an embodiment of the drain pump of the present invention.
In the figure: 1. a draining pump; 11. a water outlet; 12. a water inlet; 13. a pump wheel; 14. a motor; 2. a one-way valve; 21. a valve cover; 211. a drain hole in the valve cover; 22. a valve plug; 23. a sealing table; 231. a drain hole on the sealing table; 24. a limit structure; 25. an elastic element.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following describes the embodiments of the present invention further with reference to the drawings.
As shown in fig. 1-3, a drain pump 11 comprises a water outlet 11, a one-way valve 2 is arranged at the water outlet 11, the one-way valve 2 comprises a valve body, the valve body comprises a valve cavity and a sealing table 23 arranged at the upstream of the valve cavity, a valve plug 22 is movably arranged in the valve cavity, and the valve plug 22 moves to open a drain passage of the sealing table under the action of drain water pressure.
In the above-described embodiments, the drain pump 11 of the present invention is generally used in a washing machine employing an up-drain method. Because the washing machine of the upper drainage mode generally has the problems of waste water backflow, sewer smell backflow, noise generation and the like, the invention aims to solve the problems, and a drainage pump 11 is arranged, wherein the drainage pump 11 comprises a water outlet 11, a one-way valve 2 is arranged at the water outlet 11, the one-way valve 2 is detachably arranged at the water outlet 11, the one-way valve 2 is fixedly arranged at the water outlet 11, the drainage pipeline is detachably connected at the water outlet 11, and the drainage pipeline is communicated with the water outlet 11; the drainage pipeline is detachably connected to the one-way valve 2 and is communicated with the water outlet 11. The drainage pump 11 comprises a water outlet 11 communicated with a drainage pipeline and a water inlet 12 connected with a water inlet pipeline, the drainage pipeline is connected with a sewer, and the water inlet pipeline is connected with a washing outer barrel of the washing machine. A non-return valve 2 is provided at the water outlet 11 of the drain pump 11, said non-return valve 2 preventing water and/or odors of the drain line from going back to the drain pump 11 and even to the washing tub. The one-way valve 2 comprises a valve body, the valve body comprises a valve cavity and a sealing table 23 arranged at the upstream of the valve cavity, a valve plug 22 is movably arranged in the valve cavity, and the valve plug 22 moves to open a drainage passage of the sealing table under the action of drainage water pressure. The upstream of the valve cavity is communicated with the water outlet 11 of the drainage pump 11, and water discharged by the drainage pump 11 flows from the upstream of the valve cavity to the downstream of the valve cavity, and under the action of the one-way valve 2, the water cannot flow back from the downstream of the valve cavity to the upstream of the valve cavity. The draining pump 11 further comprises a pump wheel 13 driven by the motor 14, when the draining pump 11 works, the motor 14 drives the pump wheel 13 to rotate, the pump wheel 13 drives water in the draining pump 11 to move, pressure is generated on a sealing table 23 and a valve plug 22 at the upstream of a valve cavity of the one-way valve 2, the valve plug 22 moves under the action of the pressure, and the one-way valve 2 is opened; when the drain pump 11 is not in operation, the pump wheel 13 does not rotate, no pressure is generated on the seal upstream of the valve cavity and the valve plug 22, and the valve plug 22 moves back to the original position to close the one-way valve 2.
Further, a valve cover 21 is arranged at the downstream of the valve cavity, the sealing table 23 and the valve cover 21 form a valve cavity together with the valve body, and at least one water draining hole of the valve cover 21 is arranged on the valve cover 21.
In the above-described aspect, the valve cover 21 and the sealing table 23 form a valve chamber together with the valve body, and the valve plug 22 is movably disposed in the valve chamber. The arrangement of the valve cap 21 downstream of the valve cavity illustrates that the valve cap 21 is arranged downstream of the sealing table 23 in the direction of the water flow, and the arrangement of the valve cap 21 defines the movable range of the valve plug 22 while preventing the valve plug 22 from moving out of the valve cavity of the check valve 2, so that the check valve 2 fails. The valve cover 21 is provided with at least one valve cover 21 drain hole, and the valve cover 21 drain hole is communicated with the valve cavity and the drain pipeline, so that when the one-way valve 2 is opened, the drain pump 11 drains water to the drain pipeline through the one-way valve 2. The drain hole of the valve cover 21 may be a drain hole corresponding to the position of the valve plug 22; or may be a plurality of drain holes 211 distributed on the valve cover; or may be a large drain hole corresponding to the position of the valve plug 22 and a plurality of small drain holes distributed outside the large drain hole, and the small drain holes are uniformly circumferentially distributed around the large drain hole in a preferred embodiment. In order to prevent the valve plug 22 from being accidentally inserted or caught in the drain hole 211 in the valve cover or from being removed from the valve cavity under pressure from the drain hole 211 in the valve cover, the drain hole in the valve cover 21 has a smaller size than the valve plug 22.
Further, a baffle is arranged at the downstream of the valve cavity, the sealing platform 23 and the baffle form the valve cavity together with the valve body, the baffle is communicated with a drainage pipeline, and preferably, the baffle is a segment of retracted pipeline.
In the above-mentioned scheme, the baffle is a section of pipeline with a reduced pipe diameter, and the size of the section of pipeline is smaller than that of the valve plug 22; or the stop may be other structure that limits movement of the valve plug 22 within the valve cavity. The baffle is provided with a pipeline with a reduced pipe diameter communicated with the drainage pipeline or a drainage hole communicated with the one-way valve 2 and the drainage pipeline. In order to prevent the valve plug 22 from being accidentally inserted or stuck in/out of the valve cavity from/through the drain hole in the stopper, the size of the drain hole in the stopper/the diameter of the reduced pipe being smaller than the size of the valve plug 22.
Further, the sealing table 23 is provided with a drain hole, the valve plug 22 moves away from or seals the drain hole under the pressure action of two ends of the sealing table 23, and the check valve 2 opens the drain pump 11 to drain water unidirectionally or the check valve 2 closes the drain pump 11 to not drain water.
In the above-mentioned solution, the sealing table 23 is provided with a drain hole for draining the water flow, and the difference in pressure at two ends of the sealing table 23 causes the valve plug 22 to move in the valve cavity. The drain pump 1 further comprises a pump wheel 13 driven by the motor 14, when the pressure generated by the pump wheel 13 at one end of the sealing platform 23 is larger than the pressure at the other end of the sealing platform 23, the valve plug 22 leaves the drain hole 231 on the sealing platform under the action of the pressure, the one-way valve 2 is opened, when the pump wheel 13 at one end of the sealing platform 23 stops rotating and does not generate the pressure any more, the valve plug 22 returns to move to reseal the drain hole 231 on the sealing platform, the one-way valve 2 is closed, the drain pump 1 stops draining, and residual water and/or odor in the drain pipeline cannot enter the drain pump 1 and further enter the washing outer barrel.
Further, the valve plug 22 is at least partially larger than the minimum size of the drain hole 231 on the sealing table, preferably, the size of the drain hole 231 on the sealing table gradually increases toward the downstream of the valve cavity, and the size of the corresponding part of the valve plug 22 and the drain hole also correspondingly increases.
In the above-mentioned solution, the valve plug 22 is at least partially larger than the minimum size of the drain hole 231 on the sealing platform, so as to prevent the valve plug 22 from penetrating the drain hole 231 on the sealing platform due to small size, or the valve plug 22 cannot function to close the check valve 2 by being matched with the drain hole 231 on the sealing platform to break the drain pipeline due to small size. The size of the drain hole 231 on the sealing table gradually increases toward the downstream of the valve cavity, and the size of the valve plug 22 and the size of the corresponding part of the drain hole also correspondingly increase, so as to better match the two to close the one-way valve 2, prevent the one-way valve 2 from being unable to be closed due to unnecessary dislocation or be not accurate and tight enough, and the gradually changed size is beneficial to the insertion of the valve plug 22 and the automatic adjustment of dislocation during the insertion.
Further, the valve cover 21/baffle table is further provided with a limiting structure 24 for preventing the valve plug 22 from blocking the valve cover 21/baffle table, and preferably, the limiting structure 24 is a protrusion extending towards the sealing table 23.
In the above-mentioned scheme, the check valve 2 further includes a limiting structure 24, and the limiting structure 24 prevents the valve plug 22 from blocking the valve cover 21/the baffle, so as to avoid the unsmooth drainage or the inability to drain water of the check valve 2. Preferably, the limiting structure 24 is a protrusion facing the sealing table 23, and the limiting protrusion faces the valve plug 22 and prevents the valve plug 22 from approaching the valve cap 21/the stop table. The limiting protrusions can be annular protruding pipes or protruding columns which are axially distributed. The size of the limit structure 24 is smaller than the size of the valve plug 22.
Further, the valve plug 22 is provided with a limiting structure 24 for preventing the valve plug 22 from blocking the valve cover 21/the baffle, and preferably, the limiting structure 24 is a protrusion extending towards the valve cover 21/the baffle.
In the above-mentioned scheme, the one-way valve 2 of the drain pump 1 further includes a limiting structure 24, where the limiting structure 24 prevents the valve plug 22 from blocking the valve cover 21/the baffle table, so that drainage is not smooth or can not be performed. Preferably, the limiting structure 24 is a protrusion facing the valve cover 21/abutment, and the limiting protrusion faces the valve cover 21/abutment, so as to prevent the valve plug 22 from approaching the valve cover 21/abutment. The limiting protrusions can be annular protruding pipes or protruding columns which are axially distributed. The size of the limit structure 24 is smaller than the size of the valve plug 22.
Further, the check valve 2 further includes an elastic element 25, where the elastic element 25 abuts between the valve plug 22 and the valve cap 21/baffle, and the valve plug 22 seals the drain hole 231 on the sealing platform to close the check valve 2 under the action of the elastic force of the elastic element 25, and preferably, the elastic element 25 is a spring.
In the above-mentioned scheme, the valve plug 22 of the check valve 2 moves away from the drain hole 231 on the sealing table against the elastic force of the elastic member 25 under the pressure of the water discharged from the drain pump 1, and the check valve 2 is opened; when the water discharge is stopped, the valve plug 22 seals the water discharge hole 231 on the sealing table under the elastic force of the elastic element 25, and the one-way valve 2 is closed. Springs are relatively common and well-used elastic elements 25, so springs are preferably used.
Further, the valve plug 22 seals the drain hole 231 on the sealing table to close the check valve 2 under the action of self gravity, preferably, the valve plug 22 is configured as a spherical valve plug 22, and the limiting structure 24 is disposed on the valve cover 21/the blocking table.
In the above-mentioned scheme, the valve plug 22 of the one-way valve 2 moves away from the drain hole 231 on the sealing table against its own weight under the pressure of the water discharged from the drain pump 1, and the one-way valve 2 is opened; when the water discharge is stopped, the valve plug 22 seals the water discharge hole 231 on the sealing table under the action of self gravity, and the one-way valve 2 is closed. Because the valve plug 22 is susceptible to tipping or deflection when displaced, the valve plug 22 is preferably a spherical valve plug 22. In order to prevent the ball valve plug 22 from not playing a limiting role, the limiting structure 24 is disposed on the valve cover 21, and the limiting structure 24 is not disposed on the ball valve plug 22.
The invention also provides a washing machine, the washing machine comprises the draining pump 1, the draining pump 1 also comprises a pump wheel 13 driven by a motor 14, when the draining pump 1 is started, the pump wheel 13 starts to rotate under the action of the motor 14, the valve plug 22 overcomes the elasticity of the elastic element 25 and/or overcomes the gravity of the valve plug 22, and moves away from the draining hole 231 on the sealing table under the action of the draining water pressure, the one-way valve 2 is opened, and the draining pump 1 drains water; when the draining pump 1 does not drain water, the pump wheel stops rotating, the draining water pressure received by the valve plug 22 disappears, the valve plug returns to move under the action of the elasticity of the elastic element 25 or the gravity of the valve plug, the draining hole 231 on the sealing table is sealed, the one-way valve 2 is closed, and the draining pump 1 does not drain water.
Further, the drainage height of the drainage pump 1 of the washing machine is more than or equal to 10 cm.
In the above scheme, when the drainage pump 1 is started, the motor 14 inside the drainage pump 1 drives the pump wheel 13 to rotate, the valve plug 22 is separated from the drainage hole against the elasticity and/or self gravity under the action of the drainage water pressure, and the one-way valve 2 is opened. The drain water pressure received by the valve plug 22 is related to the drain height of the drain pump 1 of the washing machine, and the higher the drain height is, the greater the drain water pressure received by the valve plug 22 is. In general, when the drainage height is greater than or equal to 10cm, the water pressure of the drained water can overcome the elasticity and/or self gravity to leave the drainage hole, and the one-way valve 2 is opened. In a preferred embodiment, the drainage height of the drainage pump 1 is about 25cm, so that the drainage noise at the end of drainage is greatly reduced, because a large amount of air is mixed in the drainage pump 1 at the end of drainage, the pump wheel 13 runs at a high speed, the air and the water are stirred, the pressure cannot be formed, and the valve plug 22 is inserted into the drainage hole under the action of elasticity and/or self gravity, so that the drainage noise is greatly reduced. Meanwhile, after the drainage pump 1 is powered off, the valve plug 22 is inserted into the drainage hole, water in the drainage pipeline cannot flow back, and little residual water in the washing machine is realized. After the washing is completed, the check valve 2 is closed by the sealing insertion of the valve plug 22, so that the odor mould of the sewer cannot enter the inside of the washing machine through the drainage pipeline.
Example 1
As shown in fig. 1-2, in this embodiment, a drain pump 1 includes a water outlet 11, where a check valve 2 is disposed at the water outlet 11, the check valve 2 includes a valve body, the valve body includes a valve cavity and a sealing table 23 disposed upstream of the valve cavity, a valve plug 22 is movably disposed in the valve cavity, and the valve plug 22 moves to open a drain passage of the sealing table under the action of drain water pressure.
A valve cover 21 is arranged at the downstream of the valve cavity, the sealing table 23 and the valve cover 21 form a valve cavity together with the valve body, and at least one water draining hole of the valve cover 21 is arranged on the valve cover 21.
The sealing table 23 is provided with a drain hole, the valve plug 22 moves away from or seals the drain hole under the pressure action of the two ends of the sealing table 23, and the check valve 2 opens the drain pump 1 to drain water unidirectionally or the check valve 2 closes the drain pump 1 to not drain water.
The valve plug 22 is at least partially larger than the minimum size of the drain hole 231 on the sealing table, the size of the drain hole 231 on the sealing table gradually increases toward the downstream of the valve cavity, and the size of the corresponding part of the valve plug 22 and the drain hole also increases correspondingly.
The valve cover 21 is further provided with a limiting structure 24 for preventing the valve plug 22 from blocking the valve cover 21, and the limiting structure 24 is a protrusion extending towards the sealing table 23.
The check valve 2 further comprises an elastic element 25, the elastic element 25 is abutted between the valve plug 22 and the valve cover 21/baffle, the valve plug 22 seals the drain hole 231 on the sealing platform to close the check valve 2 under the elastic action of the elastic element 25, and the elastic element 25 is a spring.
The present embodiment also proposes a washing machine including one of the above-described drain pumps 1, the inside of the drain pump 1 further including a pump wheel 13 driven by a motor 14.
When draining, the draining pump 1 is started, as shown in fig. 2, the pump wheel 13 starts to rotate under the action of the motor 14, the valve plug 22 moves against the elastic force of the elastic element 25 under the action of the draining water pressure, and leaves the opening on the sealing table 23, the one-way valve 2 is opened, and the draining pump 1 drains water.
When the water is not discharged, the water discharge pump 1 stops working, as shown in fig. 1, the water pressure of the water discharged by the valve plug 22 disappears, the water discharge pump returns to move under the elastic force of the elastic element 25, the water discharge hole 231 on the sealing table is sealed, the one-way valve 2 is closed, and the water discharge pump 1 does not discharge water.
The drainage height of the drainage pump 1 of the washing machine is more than or equal to 10 cm.
Example two
In this embodiment, a drain pump 1 includes a water outlet 11, a one-way valve 2 is disposed at the water outlet 11, the one-way valve 2 includes a valve body, the valve body includes a valve cavity and a sealing table 23 disposed at an upstream of the valve cavity, a valve plug 22 is movably disposed in the valve cavity, and the valve plug 22 moves to open a drain passage of the sealing table under the action of drain water pressure.
Compared with the first embodiment, the difference is that a baffle is arranged at the downstream of the valve cavity, the sealing platform 23 and the baffle form the valve cavity together with the valve body, the baffle is communicated with a drainage pipeline, and the baffle is a segment of retracted pipeline.
The baffle table is also provided with a limiting structure 24 for preventing the valve plug 22 from blocking the baffle table, and the limiting structure 24 is a protrusion extending towards the sealing table 23.
Example III
As shown in fig. 1-2, in this embodiment, a drain pump 1 includes a water outlet 11, where a check valve 2 is disposed at the water outlet 11, the check valve 2 includes a valve body, the valve body includes a valve cavity and a sealing table 23 disposed upstream of the valve cavity, a valve plug 22 is movably disposed in the valve cavity, and the valve plug 22 moves to open a drain passage of the sealing table under the action of drain water pressure.
In contrast to the first embodiment, the valve plug 22 is provided with a limiting structure 24 for preventing the valve plug 22 from blocking the valve cover 21/the abutment, and preferably, the limiting structure 24 is a protrusion extending toward the valve cover 21/the abutment.
Example IV
As shown in fig. 3, in this embodiment, a drain pump 1 includes a water outlet 11, a check valve 2 is disposed at the water outlet 11, the check valve 2 includes a valve body, the valve body includes a valve cavity and a sealing table 23 disposed upstream of the valve cavity, a valve plug 22 is movably disposed in the valve cavity, and the valve plug 22 moves to open a drain passage of the sealing table under the action of drain water pressure.
In comparison with embodiment one, the difference is
The valve plug 22 is a spherical valve plug 22, the limiting structure 24 is arranged on the valve cover 21, and the valve plug 22 seals the drain hole 231 on the sealing table to close the one-way valve 2 under the action of self gravity.
Example five
As shown in fig. 1-2, in this embodiment, a drain pump 1 includes a water outlet 11, where a check valve 2 is disposed at the water outlet 11, the check valve 2 includes a valve body, the valve body includes a valve cavity and a sealing table 23 disposed upstream of the valve cavity, a valve plug 22 is movably disposed in the valve cavity, and the valve plug 22 moves to open a drain passage of the sealing table under the action of drain water pressure.
Compared with the first embodiment, the difference is that the valve cover 21 is provided with at least one large drain hole and a plurality of small drain holes, and the small drain holes are uniformly circumferentially distributed on the valve cover 21.
Example six
As shown in fig. 1-2, in this embodiment, a drain pump 1 includes a water outlet 11, where a check valve 2 is disposed at the water outlet 11, the check valve 2 includes a valve body, the valve body includes a valve cavity and a sealing table 23 disposed upstream of the valve cavity, a valve plug 22 is movably disposed in the valve cavity, and the valve plug 22 moves to open a drain passage of the sealing table under the action of drain water pressure.
In comparison with the first embodiment, the difference is that the drain height of the washing machine drain pump 1 is about 25cm in order to reduce noise at the end of the drain of the washing machine drain pump 1.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (7)
1. A drain pump, characterized by: the water outlet is provided with a one-way valve, the one-way valve comprises a valve body, the valve body comprises a valve cavity and a sealing table arranged at the upstream of the valve cavity, a baffle table is arranged at the downstream of the valve cavity, the sealing table and the baffle table form the valve cavity together with the valve body, the baffle table is a section of retracted pipeline and comprises a pipeline with reduced pipe diameter communicated with a drainage pipeline or a drainage hole communicated with the one-way valve and the drainage pipeline, the size of the drainage hole on the baffle table or the pipe diameter of the reduced pipeline is smaller than the size of a valve plug, a limiting structure for preventing the valve plug from blocking the baffle table is arranged on the baffle table, and the limiting structure is a protrusion extending towards the sealing table; a valve plug is movably arranged in the valve cavity, a drain hole is formed in the sealing table, and the valve plug is at least partially larger than the minimum size of the drain hole in the sealing table; an elastic element is arranged in the valve cavity and is abutted between the valve plug and the baffle table; when the drainage pump is started, the valve plug overcomes the elasticity to leave the drainage hole under the action of the drainage water pressure with the drainage height being more than or equal to 10cm, and the one-way valve is opened; the drainage height reaches 25cm, and after the drainage pump is powered off, the valve plug is inserted into the drainage hole under the action of elasticity to close the one-way valve.
2. The drain pump of claim 1, wherein: the valve plug moves away from or seals the drain hole under the pressure action of the two ends of the sealing table, and the one-way valve opens the drain pump to drain water unidirectionally or closes the drain pump to drain water unidirectionally.
3. The drain pump of claim 1, wherein: the size of the drain hole on the sealing table gradually increases towards the downstream of the valve cavity, and the size of the corresponding part of the valve plug and the drain hole also correspondingly increases.
4. The drain pump of claim 1, wherein: the valve plug is provided with a limiting structure for preventing the valve plug from blocking the baffle table.
5. The drain pump of claim 4, wherein: the limit structure is a protrusion extending towards the baffle table.
6. The drain pump of claim 1, wherein: the elastic element is a spring.
7. A washing machine, characterized in that: a drain pump as claimed in any one of claims 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710552784.2A CN109208271B (en) | 2017-07-07 | 2017-07-07 | Draining pump and washing machine using same |
| PCT/CN2018/094653 WO2019007395A1 (en) | 2017-07-07 | 2018-07-05 | Draining pump and washing machine using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710552784.2A CN109208271B (en) | 2017-07-07 | 2017-07-07 | Draining pump and washing machine using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109208271A CN109208271A (en) | 2019-01-15 |
| CN109208271B true CN109208271B (en) | 2023-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710552784.2A Active CN109208271B (en) | 2017-07-07 | 2017-07-07 | Draining pump and washing machine using same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109208271B (en) |
| WO (1) | WO2019007395A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108271A (en) * | 2020-08-27 | 2022-03-01 | 合肥美的洗衣机有限公司 | Drainage pump assembly and clothes treatment device |
| CN118324353A (en) * | 2024-05-17 | 2024-07-12 | 徐州华发纺织股份有限公司 | Rinsing wastewater treatment equipment for cotton cloth production |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019007395A1 (en) | 2019-01-10 |
| CN109208271A (en) | 2019-01-15 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20231108 Address after: 300356 No.6, Keda 4th Road, Balitai Town, Jinnan District, Tianjin Applicant after: Tianjin Haier washing appliance Co.,Ltd. Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER WASHING MACHINE Co.,Ltd. |
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