CN217139344U - Filter element - Google Patents

Abstract

A filter cartridge comprising a filter cartridge housing, a filter cartridge material, and a locking assembly; the filter element shell extends towards one side; the filter element material is sealed in the filter element shell; the locking assembly is fixed at one end of the filter element shell; the locking assembly comprises a first sliding piece, a second sliding piece and an elastic piece; the first sliding piece slides between the inner side and the outer side of the filter element shell along the direction vertical to the extending direction of the filter element shell; the elastic piece is abutted with the first sliding piece; when the first sliding piece slides towards the inner side of the filter element shell, the elastic piece generates elastic force opposite to the sliding direction of the first sliding piece; the second sliding piece is clamped with the first sliding piece, and when the second sliding piece moves in the direction away from the first sliding piece along the extending direction of the filter element shell, the second sliding piece slides relative to the first sliding piece and pushes the first sliding piece to the inner side of the filter element shell along the opposite direction of the elastic force. Compared with the prior art, the utility model discloses a filter core is changed in the purifier conveniently, the installation nature is good.

Description

Filter element

Technical Field

The utility model relates to a water purification technical field especially relates to a filter core.

Background

Water is a source of life, and people can not boil water in daily life. The pure water without impurities can not only provide guarantee for health, but also improve the life quality. In order to meet the requirement of people on purified water, the water purifier is produced. After letting in water the purifier, filtering material filters water for impurity such as aquatic floater, heavy metal, silt, bacterium even stops filtering material, dispels the water after the impurity and provides the user, thereby realizes the purification of water.

However, if the impurities are deposited on the filter material for a long time and the filter material is not cleaned, the impurities can pollute water and affect the water quality, so the filter material needs to be replaced regularly. On the other hand, because the needs of structure, the filter core that holds filtering material generally sets up in the inside of purifier, when regularly changing filtering material, needs take out the filter core. Because among the prior art, the most common filter core fixed mode adopts threaded connection between with other spare parts of purifier, need rotate the filter core ceaselessly when installing and removing the filter core to lead to the convenience that the filter core was installed and removed poor, inefficiency.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a filter core to improve the convenience that the filter core was changed.

The utility model adopts the following technical scheme:

a filter cartridge comprising a filter cartridge housing, a filter cartridge material, and a locking assembly; the filter element shell extends towards one side; the cartridge material is sealed within the cartridge housing; the locking assembly is fixed at one end of the filter element shell; the locking assembly comprises a first sliding piece, a second sliding piece and an elastic piece; the first slide member slides between the inside and outside of the cartridge housing in a direction perpendicular to the direction of extension of the cartridge housing; the elastic piece is abutted with the first sliding piece; when the first sliding piece slides towards the inner side of the filter element shell, the elastic piece generates elastic force opposite to the sliding direction of the first sliding piece; the second sliding member is engaged with the first sliding member, and when the second sliding member moves in a direction away from the first sliding member along the extending direction of the filter cartridge housing, the second sliding member slides relative to the first sliding member and pushes the first sliding member toward the inside of the filter cartridge housing along the opposite direction of the elastic force.

Compared with the prior art, the filter element of the utility model can be installed on the water purifier only by applying pressure through the mutual matching of the slidable first sliding piece and the second sliding piece, and can be automatically locked on the water purifier after being installed; when the filter element is disassembled, the locking of the filter element can be released only by applying pulling force. The filter element can be assembled and disassembled by pressing and pulling, so that the assembly and disassembly of the filter element are simplified, and the convenience of replacing the filter element is improved.

Further, the first sliding part is provided with a sliding surface, a first inclined surface and a butting surface; the sliding surface is parallel to the sliding direction of the first sliding piece; the abutting surface is vertically connected to one side of the sliding surface, the elastic piece abuts against the abutting surface, and the elastic direction is vertical to the abutting surface; the first inclined surface is obliquely connected to the other side of the sliding surface opposite to the abutting surface, and the first inclined surface moves between the inner side and the outer side of the filter element shell; in a direction parallel to the extending direction of the filter element shell and far away from the filter element shell, the distance from the abutting surface to the first inclined surface in the direction parallel to the elastic force is gradually increased. The first inclined plane of slope provides convenience for the purifier is impressed to the filter core, makes first slider receive outside force when automatic to the inboard slip of filter core.

Further, the first sliding part is also provided with a second inclined surface; in a direction parallel to the extending direction of the filter element shell and far away from the filter element shell, the distance from the abutting surface to the second inclined surface in the direction parallel to the elastic force is gradually increased; the second sliding part is provided with a third inclined surface, and the third inclined surface faces the second inclined surface and slides on the second inclined surface. The second inclined plane and the third inclined plane are matched with each other, so that the locking of the filter element can be released by pulling the second sliding piece when the filter element is detached.

Furthermore, the number of the first sliding parts is two, and the first sliding parts are arranged oppositely; the elastic piece is positioned between the two first sliding pieces, so that the locking force of the filter element on the water purifier is improved.

Furthermore, the number of the second inclined planes is two, the second inclined planes are projected along the direction vertical to the sliding surface, and the two second inclined planes are symmetrically arranged on two sides of the first sliding part by taking a straight line parallel to the elastic direction as a symmetry axis; the number of the third inclined planes is two, and the third inclined planes are respectively arranged opposite to the two second inclined planes so as to improve the thrust generated to the first sliding piece when the second sliding piece is pulled.

Further, the locking assembly further comprises a handle hinged to the first slide, with an axis perpendicular to the direction of extension of the cartridge housing, to facilitate pulling on the second slide.

Further, the device also comprises a sealing plug; an opening is formed in one end of the filter element shell in the extending direction, and the opening is blocked by the sealing plug; the locking assembly further comprises a fixing plate; the fixed plate is fixed on the sealing plug; the first sliding part slides on the side of the fixing plate, which faces away from the sealing plug; the second slide is located on a side of the first slide remote from the fixed plate to facilitate installation of the locking assembly on the filter cartridge while improving sealing of the filter cartridge.

Further, the filter element shell is provided with a water inlet, a guide pipe and a water outlet; the water inlet and the water outlet are positioned at one end of the filter element shell opposite to the sealing plug; one end of the guide tube is connected with the water outlet, the other end of the guide tube extends towards the sealing plug, and a gap is formed between the guide tube and the sealing plug; the filter element material and the water inlet are positioned between the outer wall of the guide pipe and the inner wall of the filter element shell, and the guide pipe separates the space inside the filter element so as to improve the filtering effect.

Further, the elastic member is a spring to simplify the structure.

Furthermore, the outer side surface of the filter element shell, which is far away from one end of the sealing plug, is provided with a limiting column or a limiting hole for positioning, so that the filter element can be positioned in the water purifier conveniently.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of the overall structure of the water purifier of the present invention;

fig. 2 is an exploded view of the water purifier of the present invention;

fig. 3 is a bottom view of the filter element of the present invention;

FIG. 4 is a schematic view of a portion of the mounting plate projected along the extension direction of the filter element housing according to the present invention;

FIG. 5 is a schematic view of the overall structure of the filter element of the present invention;

fig. 6 is a top view of the filter cartridge of the present invention;

FIG. 7 is a cross-sectional view of the cartridge taken along line Z-Z of FIG. 6;

FIG. 8 is a cross-sectional view of the cartridge taken along line Y-Y of FIG. 6;

fig. 9 is a schematic view of the overall structure of the locking assembly of the present invention;

fig. 10 is a schematic view of the overall structure of the locking assembly of the present invention after the lid is removed;

fig. 11 is a front cross-sectional view of a locking assembly of the present invention;

fig. 12 is a schematic view of the overall structure of the first sliding member of the present invention;

fig. 13 is a front view of the first sliding member of the present invention;

fig. 14 is a schematic view of the overall structure of the second sliding member according to the present invention;

fig. 15 is a schematic view of the overall structure of the fixing plate of the present invention;

fig. 16 is a schematic view of the overall structure of the middle box cover of the present invention;

FIG. 17 is a partial front cross-sectional view of the water purifier with the filter cartridge inserted into the front panel of the present invention;

fig. 18 is a partial front sectional view of the water purifier when the handle is pulled in the direction away from the fixing plate.

Detailed Description

Referring to fig. 1 and 2, the present invention provides a water purifier, which includes a housing 10, a back plate 20 covering one side of the housing 10, a front panel 30 covering the other side of the housing 10 and opposite to the back plate 20, a waterway unit 40, a filter element 50, and a filter element support 60. The housing 10, the back plate 20 and the front plate 30 constitute a housing assembly (not labeled) and enclose the waterway unit 40, the filter cartridge 50 and the filter cartridge holder 60 inside thereof. The cartridge holder 60 is fixed within the housing 10 and supports the cartridge 50. The waterway unit 40 is provided with an inlet and an outlet, which are connected to the outside of the housing 10 to facilitate the user to take water. The cartridge 50 is connected to the waterway unit 40. The water flowing into the inlet of the waterway unit 40 flows through the filter element 50 and then flows out from the outlet of the waterway unit 40. In this embodiment, the front panel 30 is provided with a circular insertion opening 31. The filter cartridges 50 are cylindrical in shape, and the number of the filter cartridges is two. Accordingly, the cartridge holder 60 is provided with two support portions 61 which are cylindrical housings. The waterway unit 40 includes a mounting plate 41 and a mounting seat 42 on the mounting plate 41. The support portion 61 is connected between the mounting seat 42 and the insertion port 31. During the use, filter core 50 inserts in the inserted hole 31, the supporting part 61 cover is established outside filter core 50, just filter core 50 inserts and fixes in the mount pad 42. Further, referring to fig. 3 and 4, a limiting post 51 and a limiting hole 411 which are matched with each other are respectively disposed on an end surface of the filter element 50 facing the mounting plate 41 and a side surface of the mounting plate 41 facing the filter element 50, and the limiting post 51 is inserted into the limiting hole 411, so that the filter element 50 is positioned when being inserted into the mounting seat 42, and an inlet and an outlet of the filter element 50 are better connected into the waterway unit 40. The stopper post 51 protrudes outward in the axial direction of the filter element 50. Accordingly, the axis of the limiting hole 411 is parallel to the limiting column 51. In this embodiment, the limiting post 51 is disposed on an end surface of the filter element 50 facing the mounting plate 41, the limiting hole 411 is disposed on a side surface of the mounting plate 41 facing the filter element 50, the limiting post 51 can be disposed on the mounting plate 41 as required, and the limiting hole 411 is disposed on the filter element 50. In addition, an insertion opening for inserting the filter element 50 may be formed in the housing 10 or the back plate 20 according to actual needs, so that the filter element 50 can be easily attached and detached.

Referring to fig. 5-8, cartridge 50 includes cartridge housing 52, locking assembly 53, filter material 54, and sealing plug 55. The filter material 54 is disposed within the cartridge housing 52. The cartridge housing 52 defines an inlet and outlet, and water entering the cartridge housing 52 from the waterway unit 40 is filtered by the filter material 52, exits the cartridge housing 52 and re-flows into the waterway unit 40 for the user. The plug 55 is inserted into the cartridge housing 52 and secured thereto to seal the filter material 52 within the cartridge housing 52. The locking assembly 53 is seated over the sealing plug 55. When the filter element 50 is pressed into the front panel 30, the locking assembly 51 is located at a side close to the front panel 30, and elastically extends and contracts to engage with an inner side surface of the front panel 30, so that the filter element 50 cannot move in a direction away from the mounting seat 42. When the filter cartridge 50 is withdrawn in a direction away from the front panel 30 along the axial direction thereof, the locking assembly 51 is elastically contracted and separated from the front panel 30, so that the filter cartridge 50 can be moved in a direction away from the mounting seat 42.

Specifically, in the present embodiment, the cartridge housing 52 is provided with an opening 521, a water inlet 522, a guide tube 523 and a water outlet 524. The filter element shell 52 is cylindrical, the insertion opening 31 is circular, the outer diameter of the filter element shell 52 is smaller than or equal to the aperture of the insertion opening 31, and the axial direction of the filter element shell 52 is parallel to the axial direction of the insertion opening 31. Along the extending direction of the cartridge housing 52, the opening 521 is opened at one side of the cartridge housing 52 and faces the front panel 30, and the sealing plug 55 blocks the opening 521. The locking assembly 53 closes over the sealing plug 55. The water inlet 522 and the water outlet 524 are provided at the other end of the filter element housing 52. The guide tube 523 is communicated with the water outlet 524, and extends along the axial direction of the filter element shell 52 in the direction away from the water outlet 524 inside the filter element shell 52. A gap is formed between the sealing plug 55 and the guide tube 523, and the guide tube 523 partitions the inner space of the filter element shell 52. The filter material 54 is located between the inner wall of the cartridge housing 52 and the outer wall of the guide tube 523. The water inlet 522 is disposed between the inner wall of the cartridge housing 52 and the outer wall of the guide tube 523 and opens into the filter material 54. The water enters the cartridge housing 52 from the water inlet 522, flows to one end of the locking assembly 53 through the filter material 54 for filtering, then enters the guide tube 523 from the gap between the locking assembly 53 and the guide tube 523, and then flows out of the cartridge 50 through the water outlet 524.

Referring to fig. 9 to 11, the locking assembly 53 includes a box cover 531, a fixing plate 532, a first sliding member 533, a second sliding member 534, an elastic member 535 and a handle 536. The box cover 531 covers a side plate of the fixing plate 532, and forms a receiving space (not labeled) for receiving the first sliding member 533, the second sliding member 534 and the elastic member 535. The fixing plate 532 is fixed to the sealing plug 55 by a screw or by adhesion, with its plate surface facing away from the box cover 531 facing the opening 521, and is parallel to the radial direction of the insertion opening 31. Preferably, the outer diameter D2 of the fixing plate 532 is equal to or greater than the outer diameter D1 of the opening 521, and the normal direction of the plate surface of the fixing plate 532 is parallel to the axial direction of the opening 521, so that an interference fit is formed between the fixing plate 532 and the opening 521 to improve the sealing performance of the opening 521. The first and second sliders 533 and 534 are disposed between the cover 531 and the fixing plate 532. The first sliding member 533 slides on the plate surface of the fixing plate 532 in a direction parallel to the plate surface, and extends and contracts between the inside and the outside of the accommodating space. In the absence of external force, the first slide member 533 extends outside the cover 531 and the cartridge housing 52. The resilient member 535 abuts the first sliding member 533. When the first sliding member 533 moves into the box cover 531, the elastic member 535 is compressed, and the elastic direction of the elastic member is parallel to the fixed plate 532 and opposite to the moving direction of the first sliding member 533, so as to facilitate the resetting of the first sliding member 533. The second slider 534 is engaged with the first slider 533. When the second sliding member 534 moves in a direction perpendicular to the plate surface of the fixing plate 532 and away from the fixing plate 532, the first sliding member 533 is driven to move towards the inner side of the box cover 531 in a direction parallel to the plate surface of the fixing plate 532. The handle 536 is located outside the box cover 531 and is mounted on the second sliding member 534, and the second sliding member 534 is moved away from the fixed plate 532 by pulling the handle 536 in a direction perpendicular to the plate surface of the fixed plate 532 and away from the fixed plate 532.

Referring to fig. 12 and 13, the first sliding member 533 has a sliding surface 5331, a first inclined surface 5332, a second inclined surface 5333, and an abutting surface 5334. The sliding surface 5331 faces and is parallel to the fixing plate 532. The first inclined surface 5332 is obliquely connected to one end of the sliding surface 5331 and faces the outside of the first sliding member 533, and when the first sliding member 533 slides, the first inclined surface 5332 moves between the outside and the inside of the box cover 531. The abutting surface 5334 is connected to the other end of the sliding surface 5331 opposite to the first inclined surface 5332, and the abutting surface 5334 is perpendicular to the sliding surface 5331 and faces the outside of the first sliding member 533. The resilient member 535 abuts the abutment surface 5334. Preferably, when the elastic member 535 is compressed and deformed, the direction of the generated elastic force is perpendicular to the abutting surface 5334 and points to the first inclined surface 5332. Along the projection of the direction parallel to the sliding surface 5331 and the abutting surface 5334, in the direction perpendicular to and away from the sliding surface 5331, the minimum distance from the abutting surface 5334 to the first inclined surface 5332 in the direction parallel to the elastic force is gradually increased, that is, the included angle between the normal of the first inclined surface 5332 and the normal of the sliding surface 5331 is an acute angle. The second inclined surface 5333 is obliquely connected to the sliding surface 5331. Projected in a direction parallel to both the sliding surface 5331 and the abutting surface 5334, the second inclined surface 5333 is located between the first inclined surface 5332 and the abutting surface 5334. In a direction perpendicular to and away from the sliding surface 5331, the minimum distance from the abutting surface 5334 to the second inclined surface 5333 gradually increases. Preferably, the first inclined surface 5332 and the second inclined surface 5333 are parallel to each other to facilitate molding. Further, the elastic member 535 is a spring, and the elastic member 535 may be made of a material that can be elastically deformed, such as rubber. The abutting surface 5334 is provided with a guide post 5335 projecting in a direction normal to the abutting surface 5334. The elastic member 535 is sleeved outside the guide post 5335 for positioning. Furthermore, the number of the second inclined surfaces 5333 and the number of the guide posts 5335 are two, and the second inclined surfaces 5333 and the guide posts 5335 are projected along a direction perpendicular to the sliding surface 5331, and are symmetrically disposed on two opposite sides of the first sliding member 533 with respect to a straight line perpendicular to the contact surface 5334 as a symmetry axis.

Referring to fig. 14, the second sliding member 534 has a main body 5341, a third inclined surface 5342 and a handle mounting shaft 5343. The body 5341 is disposed on a side of the first slider 533 away from the fixed plate 532. The third inclined surface 5342 is disposed opposite to the second inclined surface 5333. When the second slider 534 moves in a direction perpendicular to the surface of the fixed plate 532, the third inclined surface 5342 slides on the second inclined surface 5333 and pushes the first slider 533 toward the elastic member 535. Preferably, the second inclined surface 5333 and the third inclined surface 5342 are parallel and attached to each other to increase the force pushing the first sliding member 533. The handle mounting shafts 5243 are protruded from opposite sides of the case cover 531 in a direction parallel to the plate surface of the fixing plate 532 and outside the case cover 531. The handle 536 is hingedly connected to the handle mounting post 5243.

Referring to fig. 15, an elastic member mounting surface 5321 is disposed on a side surface of the fixing plate 532 facing the case cover 531. The elastic member mounting surface 5321 is perpendicular to the plate surface of the fixing plate 532 and faces the abutting surface 5334 of the first sliding member 533. The elastic member 535 is fixed on the elastic member mounting surface 5321 and located between the elastic member mounting surface 5321 and the abutting surface 5334. When the first sliding member 533 slides toward the elastic member mounting surface 5321, the elastic member 535 is compressed. Preferably, the elastic member mounting surface 5321 is provided with a protrusion (not labeled) protruding in a normal direction thereof for positioning the elastic member 535. Further, the first sliding member 533 is provided with a first guiding member 5336, and a side surface of the fixing plate 532 facing the box cover 531 is provided with a second guiding member 5322 which is matched with the first guiding member 5336. The first guide 5336 and the second guide 5322 are engaged with each other to ensure that the first sliding member 533 moves in a direction parallel to the elastic direction of the elastic member 535. In this embodiment, the first guiding member 5336 is a groove formed on the sliding surface 5331, and the extending direction thereof is parallel to the elastic direction of the elastic member 535; the second guiding member 5322 is a protrusion protruding from the surface of the fixing plate 532 in a direction perpendicular to the surface of the fixing plate 532, and the first guiding member 5336 is sleeved outside the second guiding member 5322. When the first sliding member 533 slides, the first guide 5336 slides relative to the second guide 5322 along the elastic direction, and the first guide 5336 and the second guide 5322 cooperate with each other to prevent the first sliding member 533 from sliding in the direction away from the elastic direction of the elastic member 535. In addition, the first guide 5336 may be provided as a protrusion protruding in a direction perpendicular to the plate surface of the fixing plate 532, and the second guide 5322 may be provided as a groove to perform a guiding function. Further, the second sliding member 534 is provided with a third guiding member 5344, a side surface of the fixing plate 532 facing the box cover 531 is provided with a fourth guiding member 5323 which is matched with the third guiding member 5344, and the third guiding member 5344 are engaged with each other, so as to ensure that the second sliding member 534 moves in a direction perpendicular to the surface of the fixing plate 532. In this embodiment, the third guide 5344 is a groove, the fourth guide 5323 is a protrusion extending in a direction perpendicular to the plate surface of the fixing plate 532, and the third guide 5344 is sleeved outside the fourth guide 5323 to ensure that the third guide 5344 slides relative to the fourth guide 5323 in the direction perpendicular to the plate surface of the fixing plate 532.

In this embodiment, the first sliding members 533 are two in number and are disposed opposite to each other. The number of the third inclined surfaces 5342 on the second slider 534 is two or more. The third inclined surfaces 5342 are symmetrically arranged on a straight line perpendicular to the plate surface of the fixed plate 532 when projected in a direction parallel to the sliding surface 5331 and the abutting surface 5334, the second sliding member 534 spans between the two first sliding members 533, the two symmetrically arranged third inclined surfaces 5342 are respectively opposite to the second inclined surfaces 5333 of the two first sliding members 533, and when the second sliding member 534 is pulled in a direction away from the fixed plate 532, the two first sliding members 533 which are opposite to each other are close to each other. The second sliding member 534 drives the two sliding members 533 to slide back to each other, so that the assembly and disassembly operations are simplified while the locking force of the filter element is improved.

Referring to fig. 16, when projected in a direction perpendicular to the surface of the fixing plate 532, the box cover 531 and the fixing plate 532 are circular and have a maximum outer diameter smaller than the aperture of the insertion opening 31 of the front panel 30. The side wall of the box cover 531 is provided with a first opening 5311 and a second opening 5312, and the number of the first opening 5311 and the second opening 5312 is two and are respectively located at two opposite sides of the box cover 531. The handle mounting shaft 5343 extends from the first opening 5311 to the outside of the case cover 531, and the first inclined surface 5332 extends from the second opening 5312 to the outside of the case cover 531 when the elastic member 535 is not compressed. Further, an inverted buckle 5313 is disposed on the inner side of the box cover 531, and the inverted buckle 5313 extends toward the fixing plate 532 and is in a hook shape. The fixing plate 532 is provided with an inverted installation hole 5324, the inverted installation hole 5313 is inserted into the inverted installation hole 5324, and the end part of the inverted installation hole is clamped with the fixing plate 532, so that the fixed connection between the box cover 531 and the fixing plate 532 is realized.

Referring to fig. 17 and 18, the process of attaching and detaching the filter cartridge 50 to and from the front panel 30 according to the present embodiment will be described based on the above-described structure.

First, the side of the fixing plate 532 facing away from the cover 531 faces the opening 521 of the cartridge housing 52 and is closed, and the sealing plug 55 is plugged into the opening 521. The fixing plate 532 is fixed to the sealing plug 55. Projected in a direction perpendicular to the plate surface of the fixing plate 532, the first inclined surface 5332 extends out of the box cover 531 and the outer side of the filter element housing 52 through the second opening 5312.

Then, the first inclined surface 5332 faces the insertion port 31 and pushes the filter element 50 toward the front panel 30, and the first inclined surface 5332 abuts on an edge of the insertion port 31.

Next, the first inclined surface 5332 is pressed toward the insertion port 31 in a radial direction perpendicular to the insertion port 31. The edge of the insertion opening 31 exerts a force on the first inclined surface 5332, which is parallel to the sliding surface 5331 and directed toward the elastic member 535, so that the first sliding member 533 moves toward the elastic member 535 and compresses the elastic member 535, and the first sliding member 533 retracts into the box cover 531. Since the maximum outer diameters of the box cover 531 and the fixing plate 532 and the cross-sectional diameter of the cartridge housing 52 are smaller than the hole diameter of the insertion opening 31 of the front panel 30, the cartridge 50 passes through the insertion opening 31.

Next, after the first sliding member 533 passes through the insertion opening 31, since the insertion opening 31 no longer abuts against the first inclined surface 5332, the elastic member 535 recovers its shape and pushes the first sliding member 533 to move away from the elastic member 535. At this time, the first sliding member 533 protrudes outside the box cover 531 again, and a side surface of the first inclined surface 5532 away from the fixed plate 532 in a direction perpendicular to the plate surface of the fixed plate 532 abuts against the front panel 30, so that the filter element 50 is prevented from falling off from the front panel 30.

Referring to fig. 18, during detachment, the handle 536 is pulled in a direction away from the fixing plate 532 along a radial direction of the insertion opening 31, that is, the handle 536 is pulled in a direction away from the front panel 30. The third inclined surface 5342 slides along the second inclined surface 5333 in a direction away from the fixing plate 532, and generates an acting force on the second inclined surface 5333 and directed to the elastic member 535, so that the first sliding member 533 moves toward the elastic member 535, the first sliding member 533 retracts into the box cover 531, no longer abuts against the plate surface of the front panel 30, and the filter element 50 then falls off from the front panel 30 through the insertion opening 31, thereby realizing the detachment thereof.

Compared with the prior art, the utility model discloses a filter core is installed and removed the convenience on the purifier, and the locking is stable, has the automatic locking function moreover, and locking power is strong. The structure is simple and easy to realize. In addition, the filter element has good sealing performance and filtering effect.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (10)

1. A filter cartridge, characterized in that: comprises a filter element shell, a filter element material and a locking component; the filter element shell extends towards one side; the cartridge material is sealed within the cartridge housing; the locking assembly is fixed at one end of the filter element shell; the locking assembly comprises a first sliding piece, a second sliding piece and an elastic piece; the first slide member slides between the inside and outside of the cartridge housing in a direction perpendicular to the direction of extension of the cartridge housing; the elastic piece is abutted with the first sliding piece; when the first sliding piece slides towards the inner side of the filter element shell, the elastic piece generates elastic force opposite to the sliding direction of the first sliding piece; the second sliding member is engaged with the first sliding member, and when the second sliding member moves in a direction away from the first sliding member along the extending direction of the filter cartridge housing, the second sliding member slides relative to the first sliding member and pushes the first sliding member toward the inside of the filter cartridge housing along the opposite direction of the elastic force.

2. The filter cartridge of claim 1, wherein: the first sliding part is provided with a sliding surface, a first inclined surface and a butting surface; the sliding surface is parallel to the sliding direction of the first sliding piece; the abutting surface is vertically connected to one side of the sliding surface, the elastic piece abuts against the abutting surface, and the elastic direction is vertical to the abutting surface; the first inclined surface is obliquely connected to the other side of the sliding surface opposite to the abutting surface, and the first inclined surface moves between the inner side and the outer side of the filter element shell; in a direction parallel to the extending direction of the filter element shell and far away from the filter element shell, the distance from the abutting surface to the first inclined surface in the direction parallel to the elastic force is gradually increased.

3. The filter cartridge of claim 2, wherein: the first sliding part is also provided with a second inclined surface; in a direction parallel to the extending direction of the filter element shell and far away from the filter element shell, the distance from the abutting surface to the second inclined surface in the direction parallel to the elastic force is gradually increased; the second sliding part is provided with a third inclined surface, and the third inclined surface faces the second inclined surface and slides on the second inclined surface.

4. A filter cartridge as claimed in any one of claims 1 to 3, wherein: the number of the first sliding parts is two, and the first sliding parts are arranged in a back-to-back manner; the elastic piece is positioned between the two first sliding pieces.

5. A filter cartridge as recited in claim 3, wherein: the number of the second inclined planes is two, the second inclined planes are projected along the direction vertical to the sliding surface, and the two second inclined planes are symmetrically arranged on two sides of the first sliding part by taking a straight line parallel to the elastic direction as a symmetry axis; the number of the third inclined planes is two, and the third inclined planes are respectively opposite to the two second inclined planes.

6. The filter cartridge of claim 1, wherein: the locking assembly further includes a handle hingedly connected to the first slide, with an axis of the hinge being perpendicular to a direction of extension of the cartridge housing.

7. The filter cartridge of claim 1, wherein: the device also comprises a sealing plug; an opening is formed in one end of the filter element shell in the extending direction, and the opening is blocked by the sealing plug; the locking assembly further comprises a retaining plate; the fixed plate is fixed on the sealing plug; the first sliding part slides on the side of the fixing plate, which faces away from the sealing plug; the second sliding part is positioned on one side of the first sliding part, which is far away from the fixed plate.

8. The filter cartridge of claim 7, wherein: the filter element shell is provided with a water inlet, a guide pipe and a water outlet; the water inlet and the water outlet are positioned at one end of the filter element shell opposite to the sealing plug; one end of the guide tube is connected with the water outlet, the other end of the guide tube extends towards the sealing plug, and a gap is formed between the guide tube and the sealing plug; the filter element material and the water inlet are positioned between the outer wall of the guide pipe and the inner wall of the filter element shell.

9. The filter cartridge of claim 8, wherein: the elastic piece is a spring.

10. The filter cartridge of claim 9, wherein: and a limiting column or a limiting hole for positioning is arranged on the outer side surface of one end, far away from the sealing plug, of the filter element shell.

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