CN211273840U - Filter element assembly and water purifier with same - Google Patents

Abstract

The utility model provides a filter element group spare and purifier that has it. This filter element subassembly includes: the side wall of the filter element is provided with a bulge; a filter base having a mounting groove and a chute; a locking member disposed within the chute and slidable along the chute between a locked position and an unlocked position; and a rotation transmission member provided outside the filter cartridge and rotatable about a central axis of the filter cartridge, on which a second chute having an open end and a predetermined position is provided, between which the projection is slidable. When the protrusion is positioned at the opening end, the rotary transmission component is positioned at the first station, and the locking piece is positioned at the unlocking position; when the projection is at the preset position, the rotary transmission component is at the second working position, and the locking piece is at the locking position. Therefore, the filter element assembly with the structure not only can simplify the use steps, but also is convenient for the installation and the disassembly of the filter element, reduces the number of parts in the filter element assembly, improves the stability of the filter element assembly, and prolongs the service life.

Description

Filter element assembly and water purifier with same

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a filter element group spare and purifier that has this filter element group spare.

Background

With the improvement of living standard, the water quality requirement of people on domestic water is higher and higher. There are various water purifiers in the existing market, which are installed on water supply pipelines to filter and purify tap water. The water purification effect of purifier mainly filters through the filter core and realizes, in order to guarantee water purification quality, the filter core will be changed regularly.

The filter core in current purifier is mostly the formula filter core that cut straightly, because cut straightly the formula filter core and break away from easily and strain the seat, in order to prevent this phenomenon, is provided with locking mechanical system on the filter core and strains the seat many times, is installing the filter core and strains the seat after, locks the filter core with straining the seat through locking mechanical system, prevents that the filter core from breaking away from and strain the seat and appear the phenomenon of leaking.

However, the locking mechanism of the existing filter element and the filter base is complex in structure, and in the process of installation and disassembly, the filter element is inconvenient to install and disassemble due to the fact that the handle or other mechanisms need to be linked, and the existing locking mechanism is more in parts, easy to damage and not beneficial to long-time use.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems occurring in the prior art, according to an aspect of the present invention, there is provided a filter element assembly comprising: the filter element is provided with a bulge on the side wall, and the side wall of the bottom of the filter element is provided with a locking groove; a filter base having a mounting groove for receiving a bottom of the filter element and a sliding groove connected to a sidewall of the mounting groove, a central axis of the sliding groove extending in a radial direction of the mounting groove; a locking member disposed within the chute and slidable along the chute between a locked position at least partially inserted into the locking groove to lock the filter cartridge and an unlocked position at which the locking member exits the locking groove to unlock the filter cartridge, the locking member having a first angled slot perpendicular to an axial direction of the mounting groove and inclined relative to a radial direction of the mounting groove; and a rotary drive member disposed outside the filter cartridge and rotatable about a central axis of the filter cartridge, the rotary drive member having opposite first and second ends along the central axis of the filter cartridge, a second chute disposed on a side wall of the first end and inclined with respect to the central axis of the filter cartridge, the second chute having an open end at a top of the rotary drive member, the projection entering or exiting the second chute from the open end, and the projection being slidable along the second chute between the open end and the predetermined position to rotate the rotary drive member between a first station and a second station, the second end having a latch inserted into and slidable along the first chute, wherein the projection is at the open end, the rotary drive member is located at the first station and the lock is in the unlocked position; when the projection is in the predetermined position, the rotary transmission member is located at the second station, and the lock is in the lock position.

Therefore, the filter element assembly with the structure can realize the locking and unlocking relationship between the filter element and the filter base only by moving the filter element in the axial direction. And compare with prior art, need not to set up on the filter core and realize the complicated mechanism of locking the filter core through handle or other mechanism linkages. Not only simplified the step in the aspect of the use, still made things convenient for the installation and the dismantlement of filter core, reduced the quantity of part simultaneously in filter element group spare, improved filter element group spare stability, prolonged life.

Exemplarily, the sliding groove is arranged inside the filter base, the filter base is further provided with an arc-shaped groove which is concentric with the filter element, the arc-shaped groove extends from the upper surface of the filter base to the sliding groove, and the bolt of the rotary transmission member can penetrate through the arc-shaped groove to be inserted into the first chute.

By this arrangement, the locking member can be accommodated in the slide groove, making the movement of the locking member more stable and reliable.

Illustratively, the first chute has a first orthographic projection in a plane perpendicular to a central axis of the chute, the arc-shaped slot has a second orthographic projection in a plane perpendicular to the central axis of the chute, and a width of the first orthographic projection is not greater than a width of the second orthographic projection.

Thus, by limiting the length of the L1 of the first chute, and thus the size of the lock, on the one hand, the overall size of the filter cartridge assembly can be reduced. On the other hand, can also regard as rotatory drive element pivoted spacing through the both ends of the first chute of locking piece, improve the integrated level of filter element group spare.

Exemplarily, a limiting column extending along the axial direction of the mounting groove is further arranged in the sliding groove of the filter base, a limiting sliding groove is arranged on the locking piece, the limiting sliding groove extends along the central axis of the sliding groove, and the limiting column is inserted into the limiting sliding groove to limit the locking piece to slide between the locking position and the unlocking position.

Like this, establish spacing spout cover on spacing post, can only move in its direction of motion in order to restrict the locking piece, can also prevent when dismantling the rotatory transmission component that the locking piece slides from straining the seat and loses.

Illustratively, the rotary transmission member is barrel-shaped, the second chute is provided on an inner wall of the rotary transmission member, and the open end of the second chute is located on an end surface of the rotary transmission member.

Like this, rotatory transmission component can be more stable, and if there are multiunit second chute and protruding cooperation, and multiunit bolt and the cooperation of first chute, then can play better synchronous effect, has improved the usability of filter element group spare.

The locking groove is an annular groove surrounding the bottom, and one end of the locking piece close to the filter element is provided with a plug part which is inserted into the annular groove when the locking piece is located at the locking position.

Therefore, the locking groove can be arranged in the bottom of the filter element within the largest possible range, and the locking piece is easy to insert the insertion part into the locking groove due to the large arrangement range of the locking groove. The service performance of the product is improved.

Illustratively, the second chute is closed at the predetermined location to form a closed end opposite the open end.

Thus, the length of the second chute can be reduced, the processing amount can be reduced, and meanwhile, the structural strength of the rotary transmission member can be improved due to the reduction of the processing amount.

Illustratively, the projection is located on an upper portion of the sidewall of the cartridge and is spaced from a top of the cartridge.

Therefore, when a user installs the filter element, a part of the filter element needs to be inserted into the rotary transmission member first, the matching of the filter element on the rotary transmission member is improved, and the user can further insert the protrusion into the opening end of the second chute, so that the filter element is simpler. And the projection is spaced from the top of the filter cartridge, so that after the filter cartridge is fully inserted into the filter base and locked, a portion of the filter cartridge is still exposed outside the rotary drive member. The filter element is convenient to mount and dismount.

Illustratively, the protrusion is spaced from the top of the cartridge by a distance equal to the vertical distance between the open end and the predetermined position.

In this way, when the cartridge is mounted to the filter base and locked, the top of the cartridge is flush with the top of the rotary drive member. The processing amount of the second chute can be further reduced, and the product quality is improved.

According to another aspect of the present invention, there is also provided a water purifier, comprising any one of the filter element assemblies as described above.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is an exploded view of a filter element assembly according to an exemplary embodiment of the present invention;

fig. 2 is a perspective view of a locking element according to an exemplary embodiment of the present invention;

fig. 3 is a perspective view of a rotary drive member according to an exemplary embodiment of the present invention;

fig. 4 is a perspective view of a filter base according to an exemplary embodiment of the present invention;

FIG. 5 is a cross-sectional view of the filter base of FIG. 4;

fig. 6A is a perspective view of a filter element assembly according to an exemplary embodiment of the present invention, wherein the filter element assembly is in an unlocked state;

FIG. 6B is a cross-sectional view of FIG. 6A;

fig. 7A is a perspective view of a filter element assembly according to an exemplary embodiment of the present invention, wherein the filter element assembly is in a locked state; and

fig. 7B is a cross-sectional view of fig. 7A.

Wherein the figures include the following reference numerals:

100. a filter element assembly; 200. a filter element; 210. a protrusion; 220. a locking groove; 300. a filter base; 310. mounting grooves; 320. a chute; 330. an arc-shaped slot; 340. a limiting column; 400. a locking member; 410. a first chute; 420. a limiting chute; 430. a plug-in part; 500. a rotation transmission member; 510. a first end; 520. a second end; 530. a second chute; 531. an open end; 532. a predetermined position; 540. and (4) a bolt.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

The utility model provides a filter element group spare 100, it can regard as a part of purifier, as shown in fig. 1, include: a filter cartridge 200, a filter holder 300, a locking member 400, and a rotation transmission member 500.

The filter cartridge 200 has a protrusion 210 on a sidewall thereof, and a locking groove 220 is formed on a sidewall of a bottom of the filter cartridge 200.

The filter holder 300 has a mounting groove 310 for receiving the bottom of the filter cartridge 200 and a slide groove 320 connected to a sidewall of the mounting groove 310, the central axis of the slide groove 320 extending in a radial direction of the mounting groove 310. In one embodiment, the sliding groove 320 may be semi-through, that is, one end of the sliding groove 320 is connected to the mounting groove 310, and the opposite end is located in the filter base 300 and is not communicated with the outside. In another embodiment, the chute 320 may be in communication with the top surface of the filter base 300. A preferred embodiment will also be described in detail below.

The locking member 400 is disposed within the slide channel 320 and is slidable along the slide channel 320 between a locked position and an unlocked position. When the locking member 400 is in the locked position, it is at least partially inserted into the locking groove 220 to lock the cartridge 200. When the locking member 400 is in the unlocked position, it exits the locking groove 220 to release the restriction on the axial direction of the filter cartridge 200. As shown in fig. 2, the locking member 400 further has a first inclined groove 410, the first inclined groove 410 being perpendicular to the axial direction of the mounting groove 310 and inclined with respect to the radial direction of the mounting groove 310.

The rotation transmission member 500 is disposed outside the filter cartridge 200 and is rotatable about the central axis of the filter cartridge 200. Along the central axis of the filter cartridge 200, the rotary drive member 500 has opposing first and second ends 510, 520. A second angled slot 530 is provided in the sidewall of the first end 510 and is angled with respect to the central axis of the cartridge 200. As shown in fig. 3, the second inclined groove 530 has an open end 531 at the top of the rotary transmission member 500, the protrusion 210 can enter or exit the second inclined groove 530 from the open end 531, and the protrusion 210 is slidable along the second inclined groove 530 between the open end 531 and a predetermined position 532 to rotate the rotary transmission member 500 between the first station and the second station. The first station is the angular position of the rotary drive member 500 relative to the filter base 300 when the projection 210 of the filter cartridge 200 is at the open end 531. The second station is the angular position of the rotary drive member 500 relative to the filter base 300 when the projection 210 of the filter cartridge 200 is at the predetermined position 532. The second end 520 of the rotary transmission member 500 further has a latch 540 thereon, and the latch 540 is inserted into the first chute 410 and slidable along the first chute 410.

The rotation transmission member 500 may have various shapes, and in one embodiment, the rotation transmission member 500 may be a bar structure provided at the outside of the filter cartridge 200, and the bar structure is provided with the second chute 530 and the latch 540. Which is rotatable about the central axis of the cartridge 200. A preferred embodiment will be described in detail below.

During installation of the filter cartridge 200 by a user, the projection 210 on the filter cartridge 200 may be first aligned with the open end 531 of the second chute 530 on the rotary drive member 500. When the projection 210 is at the open end 531, the rotary drive member 500 is in the first station and the lock 400 is in the unlocked position, as shown in fig. 6A-6B. Illustratively, the protrusions 210 on the filter cartridge 200 should have a corresponding relationship with the number and location of the second chutes 530 on the rotary drive member 500. That is, if there are a plurality of protrusions 210, the plurality of protrusions 210 should be inserted into the second inclined groove 530 when being installed.

At this time, the user can move the filter cartridge 200 along the axis toward the filter base 300, and during the movement, the filter cartridge 200 should maintain the relative angle between the filter cartridge 200 and the filter base 300 when the filter cartridge 200 is aligned with the open end 531, so that the filter cartridge 200 does not rotate around the axis. Since the filter cartridge 200 does not rotate, and the protrusion 210 is inserted into the second chute 530, the protrusion 210 pushes the second chute 530 to rotate the rotary transmission member 500 circumferentially around the axis of the filter cartridge 200 as the filter cartridge 200 gradually moves along the axis toward the filter base 300. I.e., linear movement of the filter cartridge 200 in the axial direction is converted into circumferential movement of the rotary drive member 500. As the filter cartridge 200 moves a greater distance, the angle at which the rotary drive member 500 rotates increases.

As the rotary transmission member 500 rotates, the latch 540 inserted into the first inclined slot 410 will also slide the locking member 400 in the sliding slot 320. Since the locking member 400 can move only in the radial direction of the mounting groove 310 within the slide groove 320, the circumferential movement of the rotary transmission member 500 is converted into the linear movement of the locking member 400. In one embodiment, the width of the sliding groove 320 and the width of the locking member 400 have a matching relationship, the sliding groove 320 will limit the movement of the locking member 400 along the radial direction of the mounting groove 310. A preferred embodiment will also be described in detail below.

When the projection 210 of the filter cartridge 200 is moved to the predetermined position 532 of the second chute 530, the rotary drive member 500 is in the second station and the lock 400 is in the locked state, as shown in fig. 7A-7B.

In the embodiment shown in fig. 1, when the user moves the filter cartridge 200 in the axial direction M, the protrusion 210 pushes the second inclined groove 530, so as to rotate the rotary transmission member 500 in the circumferential direction a. At the same time, the locking member 400 will be pushed by the latch 540 to move in the direction P. As the distance the filter cartridge 200 moves in the axial direction M increases, the distance the locking member 400 moves in the direction P also increases. The locking member 400 locks the cartridge 200 until the projection 210 of the cartridge 200 is in the predetermined position 532.

Conversely, when the user takes the filter cartridge 200 out of the filter base 300, the filter cartridge 200 will move along the axial direction N, and the protrusion 210 pushes the second chute 530, so as to drive the rotary transmission member 500 to rotate along the circumferential direction B. At the same time, the locking member 400 will be pushed by the latch 540 to move in the direction Q. As the filter cartridge 200 moves an increasing distance in the axial direction N, the locking member 400 moves an increasing distance in the direction Q. Until the lock 400 fully unlocks the cartridge 200.

It can be seen that the filter cartridge assembly 100 having the above structure can achieve the locking and unlocking relationship between the filter cartridge 200 and the filter base 300 only by moving the filter cartridge 200 in the axial direction. And compare with prior art, need not to set up on filter core 200 and realize the complicated mechanism of locking filter core through handle or other mechanism linkages. Not only simplified the step in the aspect of the use, still made things convenient for the installation and the dismantlement of filter core, reduced the quantity of part simultaneously in filter element group spare 100, improved filter element group spare 100's stability, prolonged life.

Exemplarily, as shown in fig. 4, the sliding groove 320 is disposed inside the filter base 300, that is, the top of the sliding groove 320 is not communicated with the top surface of the filter base 300. In this embodiment, the sliding groove 320 may also communicate with the mounting groove 310 from the side of the filter holder 300. The filter base 300 also has an arcuate slot 330. The arcuate slot 330 is concentric with the filter element 200. The arc-shaped slot 330 extends from the upper surface of the filter base 300 to the chute 320. The latch 540 of the rotary transmission member 500 may be inserted into the first inclined groove 410 through the arc-shaped groove 330. The latch 540 may slide along the arcuate slot 330 as the rotary drive member 500 rotates about the axis. Pushing the locking member 400 within the slide channel 320.

With this arrangement, the locking member 400 can be received in the slide groove 320, making the movement of the locking member 400 more stable and reliable.

Illustratively, the first chute 410 has a first orthographic projection in a plane perpendicular to the central axis of the chute 320, the arcuate slot 330 has a second orthographic projection in a plane perpendicular to the central axis of the chute 320, and a width of the first orthographic projection is not greater than a width of the second orthographic projection.

As shown in fig. 2 and 4, the first chute 410 has a width L1 in the first orthogonal projection, and the arcuate slot 330 has a width L2 in the second orthogonal projection. Wherein the length of L1 is not greater than the length of L2.

In this way, on the one hand, by limiting the length of the L1 of the first chute 410, and thus the size of the lock 400, the overall size of the filter element assembly 100 can be reduced. On the other hand, the integration of the filter element assembly 100 can be improved by using both ends of the first inclined groove 410 of the locking member 400 as a limit for the rotation of the rotary transmission member 500.

Illustratively, as shown in fig. 2 and 5, the sliding groove 320 of the filter base 300 is further provided therein with a limiting post 340 extending along the axial direction of the mounting groove 310, and the locking member 400 is provided thereon with a limiting sliding groove 420. The limiting slide 420 extends along the central axis of the slide 320. The stopper post 340 is inserted into the stopper slide groove 420 to restrict the locking member 400 from sliding between the locking position and the unlocking position.

The filter base 300 can be divided into upper and lower portions with a cross section between the sliding grooves 320. When the locking member 400 is mounted on the filter base 300, the filter base 300 can be disassembled, and the limiting sliding groove 420 of the locking member 400 is sleeved on the limiting post 340. The upper and lower parts of the filter base 300 are connected in various ways, which will not be described in detail.

Thus, by sleeving the limiting sliding groove 420 on the limiting post 340, the locking member 400 can be limited to move only in the moving direction, and the locking member 400 can be prevented from sliding off and losing from the filter base 300 when the rotary transmission member 500 is disassembled.

Illustratively, the rotary transmission member 500 is barrel-shaped, and the second chute 530 is disposed on an inner wall of the rotary transmission member 500. The open end 531 of the second chute 530 is located on the end face of the rotary drive member.

In this way, the rotary driving member 500 can be more stable, and if there are a plurality of sets of the second chutes 530 engaged with the protrusions 210 and a plurality of sets of the pins 540 engaged with the first chutes 410, a better synchronization effect can be achieved, improving the usability of the filter element assembly 100.

Illustratively, locking groove 220 is an annular groove around the bottom of cartridge 200, and locking member 400 has a spigot 430 at an end adjacent cartridge 200. The insertion part 430 is inserted into the annular groove when the locking member 400 is in the locking position.

Thus, the locking groove 220 can be formed in the bottom of the filter cartridge 200 as much as possible, and the locking member 400 can be easily inserted into the locking groove 220 by forming the locking groove 220 in a wide range. The service performance of the product is improved.

Illustratively, the second angled slot 530 of the rotary drive member 500 is closed at a predetermined location 532 to form a closed end opposite the open end 531.

Thus, the length of the second chute 530 can be reduced to reduce the amount of processing, and at the same time, the structural strength of the rotary transmission member 500 can be improved due to the reduction of the amount of processing.

Illustratively, the protrusion 210 is located on an upper portion of the sidewall of the cartridge 200 and is spaced from the top of the cartridge 200.

Thus, when a user installs the filter cartridge 200, a portion of the filter cartridge 200 needs to be inserted into the rotation transmission member 500 first, so that the fitting of the filter cartridge 200 to the rotation transmission member 500 is improved, and the user can insert the protrusion 210 into the open end 531 of the second inclined groove 530 more easily. And the protrusion 210 is spaced apart from the top of the filter cartridge 200, such that a portion of the filter cartridge 200 is exposed outside the rotation transmission member 500 after the filter cartridge 200 is completely inserted into the filter holder 300 and locked. Facilitating the installation and removal of the filter cartridge 200.

Further, the protrusion 210 is spaced from the top of the cartridge 200 by a distance equal to the vertical distance of the open end 531 to the predetermined location 532.

In this way, when the filter cartridge 200 is mounted to the filter base 300 and locked, the top of the filter cartridge 200 is flush with the top of the rotary drive member 500. The processing amount of the second chute 530 can be further reduced, and the quality of the product is improved.

According to another aspect of the present invention, there is provided a water purifier, comprising any one of the filter element assemblies 100 as described above. For the various components included in the filter element assembly 100, reference may be made to the above description, and for the sake of brevity, further description is omitted here.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A filter element assembly (100), comprising:

the filter element (200) is provided with a bulge (210) on the side wall, and a locking groove (220) is arranged on the side wall of the bottom of the filter element;

a filter holder (300) having a mounting groove (310) for receiving a bottom of the filter cartridge and a slide groove (320) connected to a sidewall of the mounting groove, a central axis of the slide groove extending in a radial direction of the mounting groove;

a locking member (400) disposed within the chute and slidable along the chute between a locked position and an unlocked position, the locking member being at least partially inserted into the locking slot to lock the filter cartridge when in the locked position, the locking member exiting the locking slot to unlock the filter cartridge when in the unlocked position, the locking member having a first angled slot (410) perpendicular to an axial direction of the mounting slot and inclined relative to a radial direction of the mounting slot; and

a rotary drive member (500) disposed outside of the filter cartridge and rotatable about a central axis of the filter cartridge, the rotary drive member having opposite first (510) and second (520) ends along the central axis of the filter cartridge, a second angled slot (530) disposed on a sidewall of the first end and inclined relative to the central axis of the filter cartridge, the second angled slot having an open end (531) at a top of the rotary drive member, the projection entering or exiting the second angled slot from the open end and being slidable along the second angled slot between the open end and a predetermined position (532) to rotate the rotary drive member between first and second stations, the second end having a latch (540) inserted into the first angled slot and slidable along the first angled slot,

wherein when said projection is in said open end, said rotary drive member is in said first station and said lock is in said unlocked position; when the projection is in the predetermined position, the rotary transmission member is located at the second station, and the lock is in the lock position.

2. The filter element assembly according to claim 1, wherein said chute (320) is provided inside said filter base (300), said filter base further having an arc-shaped slot (330) concentric with said filter cartridge, said arc-shaped slot extending from an upper surface of said filter base to said chute, said plug pin of said rotary transmission member (500) being insertable through said arc-shaped slot into said first chute (410).

3. The filter element assembly according to claim 2, wherein the first chute (410) has a first orthographic projection in a plane perpendicular to the central axis of the chute (320), the arcuate slot (330) has a second orthographic projection in a plane perpendicular to the central axis of the chute, the first orthographic projection having a width not greater than a width of the second orthographic projection.

4. The filter element assembly according to claim 1, wherein a limiting post (340) extending in an axial direction of the mounting groove (310) is further provided in the sliding groove (320) of the filter base (300), and a limiting sliding groove (420) extending along the central axis of the sliding groove is provided on the locking member (400), the limiting post being inserted into the limiting sliding groove to limit the locking member from sliding between the locking position and the unlocking position.

5. The filter element assembly according to claim 1, wherein the rotary drive member (500) is barrel-shaped, the second chute (530) being provided on an inner wall of the rotary drive member, the open end (531) of the second chute being located on an end face of the rotary drive member.

6. The filter element assembly according to claim 1, wherein the locking groove (220) is an annular groove around the bottom, and an end of the locking element (400) adjacent to the filter element (200) has a spigot (430) that is inserted into the annular groove when the locking element is in the locked position.

7. The filter element assembly according to claim 1, wherein said second chute (530) is closed at said predetermined position (532) to form a closed end opposite said open end (531).

8. The filter element assembly according to claim 1, wherein the protrusions (210) are located at an upper portion of the side wall of the filter element (200) and spaced from the top of the filter element.

9. The filter element assembly according to claim 8, wherein the protrusion (210) is spaced from the top of the filter element (200) by a distance equal to the vertical distance between the open end (531) to the predetermined position.

10. A water purification machine comprising a filter element assembly according to any one of claims 1 to 9.

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