CN113929159A

CN113929159A - Quick-change filter element and water purifier

Info

Publication number: CN113929159A
Application number: CN202010609474.1A
Authority: CN
Inventors: 何明
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2022-01-14

Abstract

The invention provides a quick-change filter element and a water purifier, wherein the quick-change filter element comprises a machine shell (3), a quick-change filter element mechanism fixed outside the machine shell (3) and a filter element (40) inserted in the machine shell (3), an opening for installing and detaching the filter element (40) is formed in the machine shell (3), the quick-change filter element mechanism comprises a support (1) and a lock catch (2) movably installed on the support (1), a lock catch elastic resetting device (22) is arranged between the support (1) and the lock catch (2), a lock catch locking part (21) is arranged at one end of the lock catch (2), and the lock catch locking part (21) can lock and release the filter element (40). The quick-change mechanism for the filter element of the quick-change filter element can tightly grasp the filter element by the lock catch locking part when the water purifier is normally used or works, and the filter element can be quickly taken out as long as the lock catch locking part is separated from the filter element when the service life of the filter element is expired.

Description

Quick-change filter element and water purifier

Technical Field

The invention relates to a filter element, in particular to a quick-change filter element. In addition, the invention also relates to a water purifier comprising the quick-change filter element.

Background

The water purifier uses tap water as the inflow, filters through different filter cores, can obtain the drinking water. The drinking water of the water purifier reaches the level of pure water and can be directly drunk. Domestic water of a water purifier on the market is generally filtered by various filter elements, such as a PP cotton filter element, an activated carbon filter element, an ultrafiltration membrane filter element, a reverse osmosis membrane filter element or a composite filter element with the same function.

However, after the filter element of the water purifier is used for a period of time, the filter element needs to be replaced to ensure the filtering effect of the water purifier. Like the cotton filter core of PP, it plays the effect of filtering large granule impurity such as silt, colloid, after having used a period, because the filter core is inside has gathered a large amount of silt, extremely influences its filter effect, reduces the availability factor of filter core at the back, so must in time change. The replacement period recommended by the manufacturer is 6 to 12 months, and in some regions with poor water quality, the filter element needs to be replaced within 3 months. Therefore, filter element replacement is a function that must be considered in the design and use of the water purifier.

The existing water purifier is generally installed by after-sales personnel going to the door, and the after-sales personnel also need to go to the door for replacement when replacing the filter element. As shown in fig. 37: the front three-stage filtration of the water purifier consists of a filter flask cover 1 ', a filter flask 2 ' and a filter element 3 ', the filter flask 2 ' and the filter flask cover 1 ' are connected through threads, when the filter element is replaced, a special spanner is used to disassemble and screw the filter flask 2 ', the old filter element 3 ' is taken out, a new filter element 3 ' is put in, and the filter flask 2 ' is screwed down by the special spanner. The operation can only be performed by special personnel, so that the use cost of a user is increased, the operation is complicated, and the time cost is increased.

Disclosure of Invention

The technical problem to be solved by the first aspect of the present invention is to provide a quick-change filter cartridge, which can be locked without falling out during use and can be quickly released during replacement, thereby achieving quick replacement.

The technical problem to be solved by the second aspect of the invention is to provide a water purifier, wherein a filter element of the water purifier can be locked and cannot be separated when in use, and can be quickly released during replacement, so that quick replacement is realized.

In order to solve the technical problem, a first aspect of the present invention provides a quick-change filter cartridge, which includes a housing, a quick-change mechanism for the filter cartridge fixed outside the housing, and a filter cartridge inserted into the housing, wherein an opening for installing and removing the filter cartridge is formed on the housing, wherein, the filter element quick-change mechanism comprises a bracket and a lock catch movably arranged on the bracket, a lock catch elastic reset device is arranged between the bracket and the lock catch, one end of the lock catch is provided with a lock catch locking part, the lock catch locking part is provided with a first position and a second position relative to the bracket, the lock catch locking part can overcome the elastic force of the lock catch elastic resetting device under the action of external force and be driven to the first position to release the filter element, and can reset to the second position through the elasticity of the elastic resetting device of the lock catch so as to lock the filter element.

Preferably, the other end of the lock catch, which is opposite to the lock catch locking part, is hinged on the bracket.

Preferably, an end surface of the latch locking portion facing the opening of the housing is formed as an inclined surface inclined toward the inside of the housing, and an inclined direction of the inclined surface is set to be closer to a center of the opening than to a side away from the housing in an insertion direction of the filter cartridge.

Preferably, the non-water-receiving end part of the filter element is provided with a filter element locking part used for being matched with the lock catch, and the filter element locking part is formed to be matched with the lock catch locking part of the lock catch so as to be capable of passing in and out the filter element locking part through the lock catch locking part to lock and release the filter element.

Further preferably, a handle is hinged to an end of the filter element exposed to the opening of the housing, so that the handle can rotate between a retracted position and a pulled position, wherein the handle can be applied with a pulling force parallel to the axial direction of the filter element at the pulled position, and an inclined surface is provided on the handle, and faces the filter element locking portion when the handle is at the retracted position.

Furthermore, a lock catch driving part is arranged on the lock catch, a push rod is arranged on the support along the length direction of the lock catch, and the lock catch driving part can be jacked up under the driving of the push rod, so that the lock catch locking part can be driven to rotate towards the first position;

the handle is hinged to the end head of the filter element so as to be capable of rotating between a retracting position and a drawing position, wherein the handle can be applied with drawing force parallel to the inserting direction of the filter element at the drawing position, contact surfaces of the handle and the stress end of the push rod, which are in contact with each other, are wedge-shaped inclined surfaces matched with each other, so that the wedge-shaped inclined surfaces are in contact with each other when the handle is at the retracting position, and the push rod is driven to move along the length direction of the lock catch through the matching of the wedge-shaped inclined surfaces when the handle rotates towards the drawing position, so as to jack up the lock catch driving part.

Furthermore, the lock catch is provided with a lock catch limiting part, and the handle is provided with a handle limiting groove, so that the end of the lock catch limiting part can be accommodated in the handle limiting groove when the filter element is in a locking state.

Furthermore, the casing be equipped with convex casing on the outer peripheral face of opening one end tip and push away a board, filter core quick change mechanism is in locate on the casing pushes away one side of an board dorsad the open end of casing, be equipped with on the casing and can hold the spacing hole of hasp casing of hasp locking portion, so that hasp locking portion can be via the spacing hole locking of hasp casing and release the filter core, the casing pushes away and is equipped with first spacing hole on the board, the push rod wears to locate in the first spacing hole and the stress end of this push rod stretches out the casing pushes away a board.

Furthermore, a second limiting hole is formed in the machine shell position pushing plate, and the lock catch limiting part penetrates through the second limiting hole.

Preferably, the decorative cover is installed to the non-water receiving end position of filter core, filter core locking part is located decorate and cover.

Further preferably, the end surface of the decorative cover is stepped.

Preferably, one side of the handle facing the filter element locking part is provided with a handle limiting groove.

The invention provides a water purifier, which comprises the quick-change filter element.

Through the technical scheme, the invention has the following beneficial effects:

1. the quick-change mechanism for the filter element of the quick-change filter element can tightly grasp the filter element by the lock catch locking part when the water purifier is normally used or works normally, so that the filter element is not separated, all water flow is ensured to be filtered by the filter element, when the service life of the filter element is over, the filter element can be quickly taken out by separating the lock catch locking part from the filter element, and then a new filter element can be fastened by directly pushing the new filter element, thereby achieving the aim of easily and conveniently replacing the filter element.

2. In the preferred scheme of the invention, the push rod with the inclined surface is adopted to drive the lock catch, when the filter element is replaced, only the push rod needs to be pushed, the inclined surface of the push rod can jack the lock catch, so that the lock catch is separated from the filter element, and the operation is convenient and rapid.

3. The filter element is provided with the lifting handle, the contact surface of the lifting handle and the stress end of the push rod is an inclined surface, the lifting handle can push the push rod to move, and therefore the lock catch is separated from the filter element, the lifting handle and the filter element are lifted out only by one hand, the old filter element can be replaced, the new filter element can be fastened by directly pushing the new filter element into the shell, the time for replacing the filter element is greatly saved, and the operation difficulty is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a locking state of a quick-change filter element in the invention;

FIG. 2 is a schematic view of the quick-change filter element in a locked and disengaged state;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a perspective view showing the position of the quick-change filter element in the locked and disengaged state;

fig. 5 is a schematic view of the quick-change cartridge of the present invention in a released condition, with the push rod and housing omitted;

FIG. 6 is a top view of FIG. 5 with the push rod and housing omitted;

fig. 7 is a perspective view of the quick-change filter cartridge of the present invention in a released condition;

fig. 8 is a schematic view of the quick-change filter cartridge of the present invention in a disengaged state;

fig. 9 is a schematic view of the connection between the housing and the quick-change mechanism for the quick-change filter cartridge according to the present invention;

fig. 10 is a schematic view of the installation of the quick-change filter cartridge of the present invention;

fig. 11 is a schematic structural view of an embodiment of a quick-change mechanism for a filter element in the invention;

FIG. 12 is a schematic view of FIG. 11 from the other side;

FIG. 13 is a schematic structural view of one embodiment of a stent of the present invention;

FIG. 14 is a schematic view of FIG. 13 from another side;

FIG. 15 is a schematic structural view of one embodiment of a latch according to the present invention;

FIG. 16 is a schematic view of FIG. 15 from the other side;

FIG. 17 is a schematic structural view of an embodiment of a push rod of the present invention;

fig. 18 is a structural schematic view of a locking state of the quick-change mechanism of the filter element in the invention;

FIG. 19 is a schematic view of the structure of FIG. 18 from the other side;

fig. 20 is a schematic structural view of a loose state of the quick-change mechanism for filter element in the invention;

FIG. 21 is a schematic view of the structure of FIG. 20 from the other side;

fig. 22 is an exploded view of a cartridge according to the present invention;

FIG. 23 is a schematic view of a filter cover of a filter cartridge according to the present invention;

FIG. 24 is a top view of FIG. 23;

FIG. 25 is a cross-sectional view of FIG. 23;

FIG. 26 is a schematic view of a decorative cover of the filter insert of the present invention;

FIG. 27 is a top view of FIG. 26;

FIG. 28 is a cross-sectional view of FIG. 26;

FIG. 29 is a schematic view of a handle according to the present invention;

FIG. 30 is a top view of FIG. 29;

FIG. 31 is a cross-sectional view of FIG. 29;

FIG. 32 is a perspective view of a handle of the present invention;

FIG. 33 is a schematic view of a locked position of the handled cartridge of the present invention;

FIG. 34 is a schematic view of a handled cartridge of the present invention in a released condition;

FIG. 35 is a schematic view of a handled cartridge of the present invention in a disengaged position;

FIG. 36 is a schematic view of a cartridge of the present invention without a handle;

fig. 37 is a schematic structural diagram of a bare chip water purifier in the prior art.

Description of the invention

1, a bracket, 11 push rods, 12 sliding shafts, 121 sliding holes and 13 push rod elastic resetting devices;

2, a lock catch, 21, a lock catch locking part, 22, a lock catch elastic reset device, 23, a lock catch driving part, 24, a lock catch limiting part and 25, wherein the hinge shaft is hinged;

3, a shell, 31 a shell pushing plate, 311 a first limiting hole, 312 a second limiting hole and 32 a lock catch shell limiting hole;

40 filter elements, 4011 barrel, 4012 filter media, 4013 filter cover, 4014 decorative cover, 4015 handle, 43 filter element locking parts, 441 handle limiting groove.

Detailed Description

The following detailed description of specific embodiments of the present invention is provided in connection with the accompanying drawings and examples. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening connectors, either internally or in cooperative relationship to each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of the features described.

As shown in fig. 1-36, the present invention provides a quick-change filter cartridge, which includes a housing 3, a quick-change filter cartridge mechanism fixed outside the housing 3, and a filter cartridge 40 inserted into the housing 3, wherein an opening for mounting and dismounting the filter cartridge 40 is formed on the housing 3, as shown in fig. 11-21, the quick-change filter cartridge mechanism includes a bracket 1 and a latch 2 movably mounted on the bracket 1, a latch elastic resetting device 22 is disposed between the bracket 1 and the latch 2, one end of the latch 2 is provided with a latch locking part 21, the latch locking part 21 has a first position and a second position relative to the bracket 1, the latch locking part 21 can be driven to the first position against the elastic force of the latch elastic resetting device 22 under the action of an external force to release the filter cartridge 40, and can be reset to the second position by the elastic force of the latch elastic resetting device 22 to lock the filter element 40. Hasp 2 when the second place, hasp locking part 21 can produce the locking action to filter core 40, makes filter core 40 stabilize normal work, when needing renew cartridge 40, breaks away from by lock core 40 by external force drive hasp 2 for filter core 40 can move about, and then makes things convenient for quick replacement.

Specifically, as some examples of the connection mode of the latch 2 and the bracket 1 according to the present invention, as shown in fig. 19 and 21, the other end of the latch 2 facing away from the latch locking portion 21 is hinged to the bracket 1. The force is applied to one end of the lock catch 2 where the lock catch locking part 21 is located, the other end of the lock catch 2 rotates around the hinge shaft 25, the lock catch 2 reaches the first position, the lock catch locking part 21 is separated from the filter element 40, and after the filter element 40 is replaced with a new filter element, the lock catch 2 automatically resets to the second position under the action of the lock catch elastic resetting device 22 and locks the new filter element 40.

Besides the above connection mode, a drive transmission member, such as a drive rod, may be further disposed in the middle of the latch 2, where the drive rod passes through the support 1, and when the drive rod is not subjected to an external force and is only subjected to the action of the latch elastic resetting device 22, the latch 2 is substantially parallel to the support 1, and applies a force to the drive rod, so that the latch 2 moves to the first position toward the support 1, and at this time, the latch 2 is still substantially parallel to the main body of the support 1, and after the old filter element 40 is taken out and replaced with a new filter element 40, the drive rod is released, and the latch 2 automatically resets to the second position and locks the new filter element 40 under the action of the latch elastic resetting device 22.

At least two cartridge quick-change mechanisms are provided for stable installation of the cartridge 40. The support 1 of the filter element quick-change machine is fixedly connected to the outer wall of the machine shell 3 through the modes of screw connection or welding and the like and is close to the opening end of the machine shell 3.

The filter cartridge 40 can either be completely accommodated in the cabinet 3 or can extend out of the cabinet 3. In the case where the filter cartridge 40 is completely located in the cabinet 3, the latch locking portion 21 locks the end of the filter cartridge 40 so that it cannot be removed from the cabinet 3; in the case that the end of the filter cartridge 40 extends out of the casing 3, the filter cartridge 40 is provided with a filter cartridge locking portion 43 adapted to the latch locking portion 21, that is, as shown in fig. 33 to 36, the end of the filter cartridge 40 is provided with a recessed filter cartridge locking portion 43 accommodating the latch locking portion 21, so that the filter cartridge 40 can be locked and released by entering and exiting the filter cartridge locking portion 43 through the latch locking portion 21.

After the old filter element 40 is drawn out of the casing 3, the latch 2 is reset to the second position by the latch elastic resetting device 22, and at this time, the insertion of the new filter element 40 may be resisted, so that the side of the latch locking portion 21 facing the opening end of the casing 3 is set to be an inclined surface inclined towards the inside of the casing 3 to facilitate the insertion of the new filter element 40. Specifically, the inclined direction of the slope is set so that the side closer to the housing 3 is closer to the center of the opening than the side farther from the housing 3 in the insertion direction of the filter cartridge 40. Of course, the inclined surface may not be provided, in which case, the push rod 11 can be manually pushed to open the latch locking portion 21, so as to smoothly insert the new filter cartridge 40 into the casing 3. In addition, the end of the filter element 40 in the casing 3 can be designed as a round surface, so as to be convenient for ejecting the locking part 21.

For the convenience of operation, a handle 4015 is provided on the end of the filter element 40 exposed to the opening of the casing 3. In the case that the filter element 40 is completely located in the casing 3, the handle 4015 can be fixed in the middle of the end of the filter element 40, and after the latch locking portion 21 releases the filter element 40 by using external force, the handle 4015 is grasped to pull the filter element 40 out of the casing 3; under the condition that the end of a filter element 40 extends out of a machine shell 3, a lock catch driving part 23 is arranged on a lock catch 2 of the quick-change filter element, a push rod 11 in the length direction of the lock catch 2 is arranged on a support 1, the lock catch driving part 23 can be jacked up under the driving of the push rod 11, so that a lock catch locking part 21 can be driven to move towards the first position to rotate, a handle 4015 is hinged to the filter element 40, so that the end of the filter element can rotate between a retracting position and a pulling position, the handle 4015 can be pulled at the pulling position in a direction parallel to the insertion direction of the filter element, contact surfaces of the stressed end of the handle 4015 and the push rod 11 are wedge-shaped inclined surfaces matched with each other, the handle 4015 is in the retracting position 4, and the push rod 11 is driven to move along the lock catch 2 through the matching of the wedge-shaped inclined surfaces when the pulling position rotates The degree of movement is such as to jack said latch actuating portion 23, so that latch locking portion 21 releases the constraint on cartridge 40 and then pulls it out of housing 3. Specifically, as shown in fig. 29 and 32, a rotation shaft is disposed inside the handle 4015, and a corresponding locking hole is disposed at an end of the filter element 40, and the rotation shaft can rotate in the locking hole. The push rod 11 is fixed with the sliding shaft 12, and the bracket 1 is provided with the sliding hole 121 of the sliding shaft 12, so that the installation position of the push rod 11 cannot influence the lock catch driving part 23 and the action thereof, and the spatial arrangement of the mechanism is more reasonable. The sliding shaft 12 and the push rod 11 may be parallel or inclined to each other. A push rod elastic reset device 13 such as a spring is arranged between the support 1 and the push rod 11 or the sliding shaft 12, the spring can be sleeved on the sliding shaft 12, one end of the spring abuts against one side of the sliding hole 121 on the support 1, the other end of the spring abuts against a connecting piece between the sliding shaft 12 and the push rod 11, and after the external force on the push rod 11 disappears, the spring automatically resets the push rod 11, which is more convenient for a manual reset mode.

The lock catch 2 is further provided with a lock catch limiting part 24, and the handle 4015 is provided with a handle limiting groove 441, so that the end of the lock catch limiting part 24 can be accommodated in the handle limiting groove 441 when the filter element 40 is in a locking state. That is, the handle 4015 is connected with other components as a whole, so that the stability of the filter element 40 is not affected by any shaking when the handle is not acted by external force. In this case, in order to make the structure compact, as shown in fig. 1, when the handle 4015 is in a locked state, i.e., abuts against the end of the filter element 40, the lock catching and limiting portion 24 is partially accommodated in the handle limiting groove 441 in the width direction, and the rest abuts against the handle 4015.

Filter core 40 still includes stack shell 4011, is located filter media 4012 in stack shell 4011, and the water receiving tip position of filter core 40 is equipped with water inlet and delivery port on stack shell 4011, and the non-water receiving tip position of filter core 40 is connected with and strains lid 4013 and dress trim cover 4014 on stack shell 4011, filter core locking portion 43 is located on dress trim cover 4014. Handle 4015 preferably articulates on decorating cover 4014, decorating cover 4014's terminal surface is preferably established to the echelonment, and handle 4015 main part can paste the lower floor step of decorating cover 4014 when the stowing position, not only saves space, has still promoted pleasing to the eye degree. Also the end face of the filter cover 4013 is preferably stepped.

Casing 3 be equipped with convex casing on the outer peripheral face of opening one end tip and push away a board 31, filter core quick change mechanism is in locate on the casing the casing pushes away a board 31 dorsad one side of the open end of casing 3, be equipped with on the casing 3 and can hold the spacing hole 32 of hasp casing of hasp locking portion 21, so that hasp locking portion 21 can be via the spacing hole 32 locking of hasp casing and release filter core 40, the casing pushes away and is equipped with first spacing hole 311 on the board 31, push rod 11 wears to locate in the first spacing hole 311 and this push rod 11's stress end stretches out the casing pushes away a board 31. Under the condition that the push rod 11 is free from external force, the lock catch locking part 21 penetrates through the lock catch machine shell limiting hole 32 to lock the filter element 40, and the stress end of the push rod 11 extends out of the machine shell position pushing plate 31; when the push rod 11 is subjected to an external force which is separated from the first limiting hole 311, the inclined surface of the push rod 11 jacks up the latch driving part 23, so that the latch locking part 21 is gradually separated from the filter element 40, and then the old filter element 40 is drawn out from the casing 3 and replaced with a new filter element 40.

In order to ensure the stability, a second limiting hole 312 is further disposed on the chassis pushing plate 31, and the lock catch limiting portion 24 is disposed in the second limiting hole 312 in a penetrating manner. When the push rod 11 is not acted by an external force, the lock catch limiting part 24 of the lock catch 2 is located in the second limiting hole 312, and when the push rod 11 is acted by an external force and the lock catch locking part 21 is gradually separated from the filter element 40, the lock catch limiting part 24 can be located in the second limiting hole 312 or separated from the second limiting hole 312.

In addition, the invention also provides a water purifier which comprises the quick-change filter element. The casing of this purifier includes shell 61 and the protecgulum 62 that can follow shell 61 and dismantle, and the quick change filter core sets up in the casing, and its non-water receiving end still is equipped with preceding shell 63 for each filter core 40 installation is firm, and the bottom of shell 61 is equipped with support rubber foot 64, avoids shell 61 directly to land.

As can be seen from the above description, the present invention has the following advantages: the quick-change mechanism for the filter element of the quick-change filter element can tightly grasp the filter element 40 by the lock catch locking part 21 when the water purifier is normally used or works normally, so that the filter element 40 is not separated, all water flow is ensured to be filtered by the filter element 40, when the service life of the filter element 40 is up, the filter element 40 can be quickly taken out by separating the lock catch locking part 21 from the filter element 40, and then a new filter element 40 can be fastened by directly pushing the new filter element 40, so that the aim of easily and conveniently replacing the filter element 40 is fulfilled; in the preferred scheme of the invention, the push rod 11 with the inclined surface is adopted to drive the lock catch 2, when the filter element 40 is replaced, only the push rod 11 needs to be pushed, the inclined surface of the push rod 11 can jack up the lock catch 2, so that the lock catch 2 loosens the limit on the filter element 40, and the operation is convenient and quick; the quick-change filter element is provided with the lifting handle 4015, the contact surface of the lifting handle 4015 and the stress end of the push rod 11 is a wedge-shaped inclined surface, the push rod 11 can be pushed to move by lifting the lifting handle 4015, so that the lock catch 2 is separated from the filter element 40, therefore, the old filter element 40 can be replaced by lifting the lifting handle 4015 and extracting the filter element 40 by only one hand in two steps, and then the new filter element 40 can be fastened by directly pushing the new filter element 40 into the shell 3, so that the time for replacing the filter element is greatly saved, and the operation difficulty is reduced.

One preferred embodiment of the present invention is listed below.

As shown in fig. 1 to 10, the quick-change filter cartridge of the present invention includes a

housing

3, 2 filter cartridge quick-change mechanisms symmetrically arranged and screwed on an outer wall of the housing 3, a housing push-and-position plate 31 protruding from a circumference of the housing 3, and a filter cartridge 40 inserted into the housing 3. The end of the filter element 40 extends out of the opening end of the casing 3, and the filter element 40 is provided with a filter element locking part 43 matched with the lock catch locking part 21. The end of the filter element 40 extending out of the machine shell 3 is hinged with a handle 4015, and the contact surfaces of the handle 4015 and the stress end of the push rod 11 are wedge-shaped inclined surfaces which are matched with each other. The casing that hasp 2 was located pushes away a board 31 one side of 3 open ends dorsad of casing, is equipped with the spacing hole 32 of hasp casing that can the holding hasp locking part 21 on the casing 3, and casing pushes away and is equipped with first spacing hole 311 on the board 31, and push rod 11 can be located first spacing hole 311 and handle 4015 pastes and leans on the casing to push away a board 31 when, and the housing pushes away a board 31 is stretched out to the stress end of this push rod 11. The casing pushing plate 31 is provided with a second limiting hole 312, and when the handle 4015 is attached to the casing pushing plate 31, the lock catch limiting part 24 of the lock catch 2 is located in the second limiting hole 312. The handle 4015 is provided with a handle limiting groove 441, so that the end of the lock catch limiting portion 24 can be accommodated in the handle limiting groove 441 when the filter element 40 and the casing 3 are in a locked state. The end of the filter element 40 in the housing 3 is rounded.

When the quick-change filter element is installed in the water purifier, the casing 3 is fixedly connected with the installation position of the water purifier. When the old filter element 40 needs to be replaced, the handle 4015 of the old filter element is lifted, as shown in fig. 2-4, when the handle is lifted by a small angle, such as 11 degrees, the inclined surface of the handle 4015 pushes the push rod 11 by a certain distance, such as 1.5mm, so that the lock catch limiting part 24 of the lock catch 2 is not limited by the handle limiting groove 441. Then the handle 4015 is lifted further, the inclined surface of the handle 4015 will continue to push the push rod 11, and the inclined surface of the push rod 11 will lift the latch driving portion 23 of the latch 2, so that the latch 2 is rotated. The handle 4015 is lifted all the time to about 40 degrees, as shown in fig. 5-7, the handle 4015 pushes the push rod 11 about 7.5mm, and the lock catch 2 rotates about 6.2 degrees. At this time, the latch locking portion 21 will be completely disengaged from the old cartridge locking portion 43, so that the old cartridge 40 will not be restricted from moving in the axial direction. The handle 4015 continues to lift, at which point the handle 4015 will contact the chassis push plate 31. When the handle 4015 is lifted, the handle 4015 will be subjected to the reaction force of the casing pushing plate 31 to move the whole old filter element 40 outward until the handle is lifted to about 90 °, as shown in fig. 8, the casing pushing plate 31 will push the old filter element 40 outward by a larger distance, such as 8.5mm, through the handle 4015. In this case, since the axial direction of the used filter element 40 is not restricted, the whole of the used filter element 40 can be directly pulled out.

When a new filter element 40 is installed, the new filter element 40 can be directly pushed into the cylinder of the housing 3, and at this time, the circular corner surface of the front section of the new filter element 40 pushes the latch locking part 21 of the latch 2 open, so that the latch 2 rotates by a certain angle, as shown in fig. 9-10, the new filter element 40 is further pushed into the new filter element 40, and the new filter element 40 is pushed to the bottom all the time, so that the new filter element 40 can reach the locking state as shown in fig. 1.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. A quick-change filter element is characterized by comprising a machine shell (3), a quick-change filter element mechanism fixed outside the machine shell (3) and a filter element (40) inserted in the machine shell (3), wherein an opening for installing and detaching the filter element (40) is formed in the machine shell (3), the quick-change filter element mechanism comprises a support (1) and a lock catch (2) movably installed on the support (1), a lock catch elastic resetting device (22) is arranged between the support (1) and the lock catch (2), one end of the lock catch (2) is provided with a lock catch locking part (21), the lock catch locking part (21) has a first position and a second position relative to the support (1), and the lock catch locking part (21) can overcome the elastic force of the lock catch elastic resetting device (22) under the action of external force and be driven to the first position to release the filter element (40), and can be reset to the second position by the elastic force of the latch elastic resetting device (22) to lock the filter element (40).

2. The quick-change filter cartridge as claimed in claim 1, characterized in that the other end of the catch (2) facing away from the catch locking portion (21) is hinged to the holder (1).

3. Quick-change filter cartridge according to claim 1, characterised in that the end face of the catch lock (21) facing the opening of the housing (3) is formed as a bevel that slopes towards the inside of the housing (3), the slope of which is arranged in the direction of insertion of the filter cartridge (40) closer to the housing (3) on the side closer to the center of the opening than on the side remote from the housing (3).

4. A quick-change filter cartridge according to claim 1, characterised in that the non-water-receiving end region of the filter cartridge (40) is provided with a filter cartridge locking portion (43) for cooperation with a catch (2), which filter cartridge locking portion (43) is formed so as to be able to fit with a catch locking portion (21) of the catch (2) in order to be able to lock and release the filter cartridge (40) by means of the catch locking portion (21) entering and exiting the filter cartridge locking portion (43).

5. Quick-change filter insert according to claim 4, characterised in that the end of the filter insert (40) exposed to the opening of the housing (3) is hinged with a handle (4015) so that the handle (4015) can be rotated between a stowed position and a drawn position, wherein the handle (4015) can be subjected to a drawing force parallel to the axial direction of the filter insert (40) in the drawn position, the handle (4015) being provided with a bevel facing the insert locking portion (43) when the handle (4015) is in the stowed position.

6. The quick-change filter element according to claim 5, wherein a lock catch driving part (23) is arranged on the lock catch (2), a push rod (11) is arranged on the bracket (1) along the length direction of the lock catch (2), and the lock catch driving part (23) can be jacked up under the driving of the push rod (11), so that the lock catch locking part (21) can be driven to rotate towards the first position;

handle (4015) articulate in filter core (40) in order to rotate between stowing position and pull position on the end, wherein handle (4015) are in the pull position can be applyed and be on a parallel with the pulling force of the direction of insertion of filter core (4), handle (4015) with the contact surface of the stress end contact of push rod (11) and mutual contact is for the wedge inclined plane of mutually supporting, so that handle (4015) are in when stowing position the wedge inclined plane contacts each other, towards when pull position rotates, pass through the cooperation drive on wedge inclined plane push rod (11) are followed hasp (2) length direction motion is in order to jack-up hasp drive portion (23).

7. The quick-change filter element according to claim 6, characterized in that the lock catch (2) is provided with a lock catch limiting part (24), and the handle (4015) is provided with a handle limiting groove (441), so that the end of the lock catch limiting part (24) can be accommodated in the handle limiting groove (441) when the filter element (4) is in the locking state.

8. The quick-change filter element according to claim 7, wherein a protruding housing push plate (31) is provided on an outer peripheral surface of the end of the open end of the housing (3), the quick-change filter element mechanism is provided on the housing (3) on a side of the housing push plate (31) facing away from the open end of the housing (3), a lock-housing limiting hole (32) capable of accommodating the lock-locking portion (21) is provided on the housing (3), so that the lock-locking portion (21) can lock and release the filter element (40) via the lock-housing limiting hole (32), a first limiting hole (311) is provided on the housing push plate (31), the push rod (11) is inserted into the first limiting hole (311) and a stressed end of the push rod (11) extends out of the housing push plate (31).

9. The quick-change filter element according to claim 8, wherein a second limiting hole (312) is formed in the housing push plate (31), and the lock catch limiting part (24) is arranged in the second limiting hole (312) in a penetrating manner.

10. The quick-change filter cartridge as claimed in any one of claims 4 to 9, characterized in that a decorative cover (4014) is fitted to the non-water-receiving end of the filter cartridge (40), the filter cartridge locking portion (43) being located on the decorative cover (4014).

11. The quick-change filter cartridge as claimed in claim 10, characterized in that the front face of the decorative cover (4014) is stepped.

12. Quick-change filter insert according to one of claims 5 to 9, characterized in that the side of the handle (4015) facing the filter insert locking portion (43) is provided with a handle limiting groove (441).

13. A water purification machine, characterized in that it comprises a quick-change filter cartridge according to any one of claims 1 to 12.