CN112569677A - Filter element assembly and water purifier - Google Patents

Abstract

The invention relates to a filter element assembly and a water purifier, wherein the filter element assembly comprises a filter bottle cover, a filter bottle body and a plug, the plug is positioned in the filter bottle body and used for plugging a first bottle opening, the filter bottle cover is screwed at the first bottle opening of the filter bottle body along the circumferential direction of the filter bottle cover, one of the plug and the filter bottle body is provided with a convex tooth, the other one of the plug and the filter bottle body is provided with a tooth socket, and the convex tooth is inserted into the tooth socket and used for limiting the plug to rotate relative to the filter bottle body in the circumferential direction. Be equipped with the locating part between filter flask lid and the stopper, the locating part can move for filter flask lid and/or stopper for filter flask lid can switch between rotatable and nonrotatable two kinds of states for the stopper in filter flask lid circumference. At the in-process of renew cartridge, before the filter flask body is not lifted off from the purifier complete machine, the locating part moves to the unable pivoted state of filter flask lid for the stopper to make filter flask body, stopper and filter flask lid three spacing for a whole can not take place to rotate relatively, avoid the condition emergence of leaking.

Description

Filter element assembly and water purifier

Technical Field

The invention relates to the technical field of water purification equipment, in particular to a filter element assembly and a water purifier.

Background

The filter capacity of purifier mainly relies on the filter core, and in water purification unit technical field, in order to prolong the life of purifier, the filter core in the purifier can be changed after using a period to the filter capacity of filter core in the recovery purifier. And for the purifier of removable filter core, because the filter flask lid must can dismantle in order to satisfy the demand of changing the filter core between the filter flask body, consequently there is the easy not hard up condition that leaks of filter flask lid.

Disclosure of Invention

The invention provides a filter element assembly and a water purifier, aiming at the problem that water leakage is easy to occur in the water purifier with a replaceable filter element, and the water purifier and the filter element assembly can effectively avoid the water leakage.

The utility model provides a filter element group spare, includes filter flask lid, filter flask body and stopper, the stopper is located with first bottleneck shutoff in the filter flask body, the filter flask lid is twisted soon along self circumference and is in the first bottleneck department of filter flask body, one of them is equipped with the dogtooth in stopper and the filter flask body, and another is equipped with the tooth's socket, the dogtooth inserts in the tooth's socket, the restriction stopper is in for the filter flask body week upwards rotates, the filter flask lid with be equipped with the locating part between the stopper, the locating part can for filter flask lid and/or stopper motion make filter flask lid week upwards the filter flask lid can switch between rotatable and non-rotatable two kinds of states for the stopper.

According to the filter element assembly, in the process of replacing the filter element, before the filter bottle body is not dismounted from the whole water purifier, the plug seals the first bottle opening of the filter bottle body, and the convex teeth are matched with the tooth grooves, so that the plug cannot rotate relative to the filter bottle body, at the moment, the limiting part moves to the state that the filter bottle cover cannot rotate relative to the plug, the filter bottle body, the plug and the filter bottle cover are limited into a whole and cannot rotate relatively, the filter bottle cover is screwed on the filter bottle body, and meanwhile, the plug seals the first bottle opening, and the water leakage is avoided. After the filter flask body is detached from the water purifier, the limiting piece is adjusted to the state that the filter flask cover can rotate relative to the plug, so that the filter flask cover is unscrewed from the filter flask body, the plug is pulled out from the first bottle opening, and then the filter element in the filter flask body is replaced.

In one embodiment, the limiting member is inserted into the filter bottle cap in a first direction and cannot rotate relative to the filter bottle cap in the circumferential direction of the filter bottle cap, the limiting member can move back and forth in the first direction relative to the filter bottle cap, when the limiting member moves to a first position, a limiting portion of the limiting member is in concave-convex fit with a fitting portion of the plug to limit the filter bottle cap from rotating in the circumferential direction of the filter bottle cap relative to the plug, and when the limiting member moves out of the first position, the limiting portion is disengaged from the fitting portion.

In one embodiment, the limiting element is inserted into the filter bottle cap in a radial direction of the filter bottle cap, or the limiting element is inserted into the filter bottle cap in an axial direction of the filter bottle cap.

In one embodiment, one of the limiting part and the matching part is a protrusion, and the other is provided with a groove matched with the protrusion.

In one embodiment, the filter bottle cap is axially divided into a mounting ring and a mounting body, the mounting ring is used for being screwed with the filter bottle body, the mounting body is provided with a jack, the limiting piece is located in the jack, and the matching portion penetrates through the mounting ring and corresponds to the limiting portion

In one embodiment, the insertion hole is arranged along the radial direction of the filter bottle cap, the matching part extends to the axial extension line of the insertion hole, a groove is arranged on the outer peripheral surface of the matching part facing the insertion hole, the groove is arranged along the axial direction of the filter bottle cap, and the limiting part is a protrusion matched with the groove.

In one embodiment, the matching part is a columnar protrusion arranged along the axial direction of the filter bottle cap, the outer peripheral surface of the matching part is provided with a plurality of grooves, and the grooves are arranged at intervals along the circumferential direction of the matching part.

In one embodiment, a supporting protrusion is disposed on an end surface of the plug facing the mounting body, and the supporting protrusion abuts against a surface of the stopper facing the filter bottle body, so that the stopper can slide along a radial direction of the filter bottle cap.

In one embodiment, the supporting protrusion is an annular protrusion, the supporting protrusion surrounds the periphery of the matching portion, the number of the limiting members and the number of the insertion holes are two, the limiting members correspond to the insertion holes one to one, and the two insertion holes are arranged oppositely.

In one embodiment, the mounting body is a cover structure with an opening at one end, the side wall of the mounting body is connected with the mounting ring, and the insertion hole is located on the side wall of the mounting body.

In one embodiment, an elastic resetting member is disposed between the limiting member and the side wall of the mounting body, and is used for providing an elastic resetting force for the limiting member to move in a direction close to the engaging portion.

In one embodiment, the limiting member is provided with a guide inclined surface, the guide inclined surface is arranged obliquely relative to the axis of the insertion hole, and the distance between the part of the guide inclined surface far away from the matching part and the axis of the insertion hole is greater than the distance between the part of the guide inclined surface close to the matching part and the axial direction of the insertion hole.

In one embodiment, the insertion hole is arranged along the radial direction of the filter bottle cap, a notch is formed in the surface, deviating from the filter bottle body, of the limiting part, and the guide inclined surface is a side wall of the notch.

In one embodiment, the limiting member includes a T-shaped limiting member and limiting portions disposed on the limiting member, positioning posts for mounting the elastic reset member are disposed on the left and right cantilevers of the limiting member, the positioning posts are axially disposed along the insertion holes, the notch is located on the middle main arm of the limiting member at a position away from the cantilevers, the limiting portion is located on an end surface of the limiting member away from the notch, and when the limiting member moves forward to the first position, the guiding inclined surface is at least partially located outside the side wall of the mounting body.

In one embodiment, the device further comprises a wrench, and the wrench is provided with an ejector block capable of abutting against the guide inclined plane.

In one embodiment, the peripheral surface of the side wall of the mounting body encloses a polygon, the wrench is provided with a polygon frame matched with the side wall of the mounting body, and the top block is located on the polygon frame at a position corresponding to the guide inclined plane.

In one embodiment, the installation body further comprises a wrench, the figure enclosed by the outer peripheral surface of the side wall of the installation body is a polygon, and the wrench is provided with a polygonal frame matched with the side wall of the installation body.

In one embodiment, the filter bottle further comprises a connecting piece, a through hole is formed in the bottom wall of the mounting body at a position corresponding to the matching portion, one end of the connecting piece penetrates through the through hole to be connected with the matching portion, the other end of the connecting piece is a limiting end, and the limiting end is in limiting matching with the mounting body, so that the connecting piece can rotate relative to the bottom wall of the mounting body and cannot move in the axial direction of the filter bottle cap.

In one embodiment, the end of the filter bottle body facing the plug is provided with the convex teeth, the convex teeth are multiple, the convex teeth are arranged at intervals in the circumferential direction of the filter bottle body, and the plug is provided with a circle of the tooth grooves facing the convex teeth.

A water purifier comprises the filter element assembly.

Above-mentioned scheme provides a purifier, through adopting the filter element subassembly in above-mentioned arbitrary embodiment to at the in-process of renew cartridge, before the filter flask body is not lifted off from the purifier complete machine, filter flask lid, stopper and filter flask body three are whole can not relative rotation each other, filter flask lid and stopper can not loosen and take off, thereby can avoid the condition emergence of leaking. When the filter bottle body is detached from the water purifier, the position of the limiting piece is adjusted, so that the filter bottle cover can rotate relative to the plug, the filter bottle cover is screwed down from the filter bottle body, the plug is pulled out from the first bottle opening, and then the filter element in the filter bottle body is removed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

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

FIG. 2 is a cross-sectional view of the filter cartridge assembly of the present embodiment;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a top view of the filter cartridge assembly of the present embodiment;

fig. 5 is a top view of the limiting member of the present embodiment;

fig. 6 is a cross-sectional view of the limiting member of the present embodiment;

FIG. 7 is a schematic structural diagram of the wrench according to the present embodiment;

fig. 8 is a schematic structural diagram of the plug of the present embodiment.

Description of reference numerals:

10. a filter element assembly; 11. a filter bottle cap; 111. a mounting ring; 112. an installation body; 1121. a jack; 1122. a through hole; 1123. perforating; 1124. a support bar; 12. a filter flask body; 121. a first bottle opening; 122. a second bottle mouth; 123. a convex tooth; 13. a plug; 131. a tooth socket; 132. a fitting portion; 1321. a groove; 1322. mounting grooves; 133. a support boss; 14. a limiting member; 141. a limiting part; 142. a guide slope; 143. a notch; 144. a cantilever; 145. a positioning column; 146. a middle main arm; 15. a connecting member; 16. an elastic reset member; 17. a wrench; 171. a top block; 172. a polygonal frame; 18. a seal ring; 19. and (3) a filter element.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

As shown in fig. 1-4, in one embodiment, a filter cartridge assembly 10 is provided that includes a filter cartridge cap 11, a filter cartridge body 12, and a plug 13. As shown in fig. 2 and 3, the stopper 13 is located in the filter body 12 to close the first opening 121. The filter bottle cap 11 is screwed onto the first mouth 121 of the filter bottle body 12 along its circumference. One of the stopper 13 and the body 12 is provided with teeth 123 and the other is provided with teeth 131, the teeth 123 are inserted into the teeth 131, and the stopper 13 is restricted from rotating relative to the body 12 in the circumferential direction of the body 12. Specifically, in some embodiments, as shown in fig. 1, the teeth 123 are provided on the body 12, and as shown in fig. 8, the teeth 131 are provided on the plug 13. A limit element 14 is arranged between the filter capsule cap 11 and the plug 13, the limit element 14 being movable relative to the filter capsule cap 11 and/or the plug 13, so that the filter capsule cap 11 can be switched between a rotatable state and a non-rotatable state relative to the plug 13 in the circumferential direction of the filter capsule cap 11.

In the filter cartridge assembly 10, the second opening 122 of the filter bottle 12 is engaged with the filter cartridge mounting seat, so that the water flow path in the water purifier is communicated with the filter cartridge 19 in the filter bottle 12. In the process of replacing the filter element 19, the filter element assembly 10 needs to be detached from the whole water purifier, so that the filter element mounting seat and the filter element body 12 are detached firstly, then the filter element cover 11 and the plug 13 at the first bottle opening 121 are detached, and then the filter element 19 in the filter element body 12 is taken out and replaced by a new filter element 19.

Therefore, the filter flask cover 11 and the plug 13 are loosened firstly before the filter flask body 12 is not detached from the filter core mounting seat in the process of replacing the filter core 19, and water leakage occurs at the moment.

Based on this, the above scheme provides a filter element assembly 10, in the process of replacing the filter element 19, before the filter bottle body 12 is not dismounted from the water purifier, the plug 13 plugs the first bottle opening 121 of the filter bottle body 12, and the cooperation of the convex teeth 123 and the tooth sockets 131 makes the plug 13 unable to rotate relative to the filter bottle body 12, at this time, the limiting piece 14 moves to the state that the filter bottle cap 11 is unable to rotate relative to the plug 13, so that the filter bottle body 12, the plug 13 and the filter bottle cap 11 are limited to a whole body and cannot rotate relative to each other, the filter bottle cap 11 is ensured to be screwed on the filter bottle body 12, and the plug 13 plugs the first bottle opening 121, thereby avoiding the occurrence of water leakage. After the filter bottle body 12 is detached from the water purifier, the stopper 14 is adjusted to a state that the filter bottle cap 11 can rotate relative to the plug 13, so that the filter bottle cap 11 is unscrewed from the filter bottle body 12, the plug 13 is pulled out from the first opening 121, and then the filter element 19 in the filter bottle body 12 is replaced.

During the process of removing the filter cap 11 and the plug 13 from the filter flask body 12, the filter cap 11 and the plug 13 can be removed from the filter flask body 12 independently and sequentially, in other words, the filter cap 11 can be unscrewed from the filter flask body 12 first, and then the plug 13 can be pulled out; or the filter bottle cap 11 and the plug 13 are limited in the axial direction of the filter bottle cap 11, and the filter bottle cap 11 synchronously drives the plug 13 to be pulled out of the filter bottle body 12 in the process of being unscrewed from the filter bottle body 12.

For example, in one embodiment, as shown in fig. 2 and 3, the cartridge assembly 10 further includes a connector 15, one end of the connector 15 is connected to the plug 13, and the other end of the connector 15 is in positive fit with the filter cap 11, such that the connector 15 can rotate relative to the filter cap 11 without moving in the axial direction of the filter cap 11. So that when the filter cap 11 is screwed back out of the filter body 12 relative to the filter body 12, the plug 13 moves along the axial direction of the filter body 12 together with the filter cap 11 under the action of the connecting piece 15, and the filter body 12 is pulled out.

When a new filter cartridge 19 is replaced in the filter body 12, the plug 13 is press-inserted into the filter body 12 by the filter cap 11 during the screwing of the filter cap 11 onto the filter body 12.

Further, in one embodiment, as shown in fig. 1 to 4, the stopper 14 is inserted into the filter bottle cap 11 in a first direction so as not to rotate relative to the filter bottle cap 11 in the circumferential direction of the filter bottle cap 11. The stopper 14 can move back and forth in the first direction relative to the filter cap 11, so as to switch states.

In particular, as shown in fig. 2 and 3, in one embodiment, the retaining element 14 can be inserted in the filter cap 11 in a radial direction of the filter cap 11. Alternatively, in another embodiment, the limit stop 14 is inserted in the filter cap 11 in the axial direction of the filter cap 11.

When the limiting member 14 is inserted into the filter bottle cap 11 in the radial direction of the filter bottle cap 11, the limiting member 14 cannot rotate in the circumferential direction of the filter bottle cap 11 with respect to the filter bottle cap 11 based on the assembly orientation relationship between the limiting member 14 and the filter bottle cap 11. When the limiting piece 14 is inserted into the filter bottle cap 11 in the axial direction of the filter bottle cap 11, the limiting piece 14 and the filter bottle cap 11 may be in concave-convex fit, so that the limiting piece 14 cannot rotate in the circumferential direction of the filter bottle cap 11 relative to the filter bottle cap 11; alternatively, the outer peripheral surface of the limiting member 14 is provided with a polygonal structure, and the sidewall of the insertion hole 1121 of the filter bottle cap 11, into which the limiting member 14 is inserted, is provided with a polygonal shape matching the outer peripheral surface of the limiting member 14, so that the limiting member 14 inserted into the insertion hole 1121 cannot rotate relative to the filter bottle cap 11.

Further, when the stopper 14 moves forward to the first position, the stopper portion 141 of the stopper 14 is engaged with the engaging portion 132 of the plug 13 in a concave-convex manner, and the rotation of the filter cap 11 relative to the plug 13 in the circumferential direction of the filter cap 11 is restricted. When the limiting member 14 moves out of the first position, the limiting portion 141 is separated from the engaging portion 132.

Because the stopper 14 cannot rotate in the circumferential direction of the filter bottle cap 11 with respect to the filter bottle cap 11, when the stopper portion 141 of the stopper 14 is engaged with the engaging portion 132 of the plug 13 in a concave-convex manner, the rotation of the filter bottle cap 11 with respect to the filter bottle body 12 can be indirectly restricted. In other words, the filter cap 11, the plug 13 and the filter bottle body 12 form a whole and cannot rotate relatively. When it is desired to remove the filter cap 11 and the plug 13 from the filter body 12, the stopper 14 is moved out of the first position so that the stopper 141 is disengaged from the engagement portion 132, and relative rotation between the plug 13 and the filter cap 11 can occur, thereby unscrewing the filter cap 11 from the filter body 12.

As shown in fig. 2 and 3, the plug 13 is located in the space enclosed by the filter bottle cap 11, and the plug 13 and the filter bottle cap 11 can rotate relatively without the limiting action of the limiting piece 14. Even though the plug 13 and the filter cap 11 are indirectly engaged by the connector 15, as described above, the connector 15 only restricts the movement of the plug 13 and the filter cap 11 in the axial direction of the filter body 12, but the rotation of the plug 13 and the filter cap 11 is not restricted. The rotation described herein means rotation about the axis of the filter cap 11 or the filter body 12.

More specifically, in one embodiment, one of the limiting portion 141 and the matching portion 132 is a protrusion, and the other is provided with a groove 1321 matching with the protrusion. So that when the retaining member 14 is moved to the first position, the protrusion is inserted into the recess 1321. The filter cap 11 is restricted from rotating relative to the plug 13 in the circumferential direction of the filter cap 11.

More specifically, in one embodiment, as shown in fig. 1 to 3, the filter bottle cap 11 is axially divided into a mounting ring 111 and a mounting body 112, the mounting ring 111 is used for being screwed with the filter bottle body 12, the mounting body 112 is provided with a receptacle 1121, the retaining member 14 is located in the receptacle 1121, and the matching portion 132 passes through the mounting ring 111 and corresponds to the retaining portion 141. So that the limiting member 14 can be engaged with the engaging portion 132 in a concave-convex manner by the contact of the limiting portion 141 and the engaging portion 132 through the moving process in the axial direction of the insertion hole 1121.

When the stopper 14 is inserted into the filter cap 11 in the radial direction of the filter cap 11, the axis of the insertion hole 1121 is arranged in the radial direction of the filter cap 11; when the stopper 14 is inserted into the filter cap 11 in the axial direction of the filter cap 11, the axis of the insertion hole 1121 is arranged in the axial direction of the filter cap 11.

Further, in an embodiment, as shown in fig. 1 to 4, a through hole 1122 is formed in the mounting body 112, one end of the connecting member 15 passes through the through hole 1122 to be connected to the matching portion 132, and the other end of the connecting member 15 is a limiting end, which is in limiting matching with the mounting body 112, so that the connecting member 15 can rotate relative to the mounting body 112 and cannot move in the axial direction of the filter bottle cap 11.

Further, in one embodiment, as shown in fig. 1 to 3, the insertion hole 1121 is disposed along a radial direction of the filter bottle cap 11, and the fitting portion 132 extends to an axial extension line of the insertion hole 1121. As shown in fig. 8, the fitting portion 132 is provided with a groove 1321 on an outer circumferential surface facing the insertion hole 1121, the groove 1321 is arranged along an axial direction of the filter bottle cap 11, and the stopper portion 141 is a protrusion matching with the groove 1321.

Alternatively, a protrusion may be provided on the fitting portion 132 toward the outer circumferential surface of the insertion hole 1121, and the stopper portion 141 may be provided with a groove.

More specifically, in one embodiment, as shown in fig. 8, the fitting portion 132 is a cylindrical protrusion disposed along the axial direction of the filter cap 11, the outer peripheral surface of the fitting portion 132 is provided with a plurality of the grooves 1321, and the plurality of the grooves 1321 are arranged at intervals along the circumferential direction of the fitting portion 132.

As shown in fig. 2 and 3, when the filter bottle cap 11 and the plug 13 are both assembled on the filter bottle body 12, the fitting portion 132 extends into the mounting body 112 through the mounting ring 111, and the retaining member 14 passing through the insertion hole 1121 is just opposite to the outer peripheral surface of the fitting portion 132.

Further specifically, as shown in fig. 1 to 4, the connection member 15 may include a screw, the engagement portion 132 is provided with a mounting groove 1322, the mounting groove 1322 is axially disposed along the filter cap 11, and the screw is mounted in the mounting groove 1322 through the through hole 1122. The side wall of the through hole 1122 is provided with a limiting protrusion, and the limiting protrusion is limited at one side of the screw cap of the screw close to the matching part 132, so that the plug 13 and the filter bottle cap 11 can move synchronously in the axial direction of the filter bottle cap 11. The side walls of the through-holes 1122 are a clearance fit with the screws so that the screws are positioned so as not to restrict rotation of the filter cap 11 relative to the plug 13.

Further, in one embodiment, as shown in fig. 1 to 3 and 8, the plug 13 is provided with a support protrusion 133 on an end surface facing the mounting body 112. As shown in fig. 2 and 3, the supporting protrusion 133 abuts against a surface of the stopper 14 facing the filter bottle body 12, so that the stopper 14 can slide in the radial direction of the filter bottle cap 11.

Under the cooperation of the supporting protrusions 133 and the insertion holes 1121, the stopper 14 can smoothly slide in the radial direction of the filter bottle cap 11.

More specifically, in one embodiment, as shown in fig. 8, the supporting protrusion 133 is an annular protrusion, and the supporting protrusion 133 surrounds the outer circumference of the matching portion 132. As shown in fig. 1 to 4, there are two limiting members 14 and two insertion holes 1121, the limiting members 14 correspond to the insertion holes 1121 one by one, and the two insertion holes 1121 are disposed oppositely. Therefore, the annular supporting protrusion 133 can better support the two limiting members 14, and it is ensured that the two limiting members 14 can both move normally.

More specifically, in one embodiment, as shown in fig. 1 to 4, the mounting body 112 is a cover structure with an opening at one end, a side wall of the mounting body 112 is connected to the mounting ring 111, and the insertion hole 1121 is located on the side wall of the mounting body 112. The stopper 14 passes through the insertion hole 1121 to move in the radial direction of the filter cap 11. The engaging portion 132 penetrates through the mounting ring 111 and extends into the mounting body 112, and the limiting member 14 can move axially along the insertion hole 1121 until the limiting portion 141 is engaged with the engaging portion 132 in a concave-convex manner.

Further, as shown in fig. 4, a plurality of through holes 1123 are formed on the bottom wall of the mounting body 112, so that the position-limiting member 14 is partially exposed to facilitate viewing and mounting the position-limiting member 14.

Specifically, in one embodiment, as shown in fig. 4, the outer peripheral surface of the sidewall of the mounting body 112 is polygonal, a plurality of through holes 1123 are arranged at intervals in the circumferential direction of the mounting body 112, and a support rod 1124 is disposed between adjacent through holes 1123. For example, as shown in fig. 4, the peripheral surface of the sidewall of the mounting body 112 has a hexagonal shape, and the number of the through holes 1123 is six.

Further, in an embodiment, as shown in fig. 1 and 4, an elastic restoring member 16 is disposed between the limiting member 14 and the sidewall of the mounting body 112, for providing an elastic restoring force for the limiting member 14 to move in a direction close to the engaging portion 132.

Before the filter bottle body 12 is detached from the water purifier, under the action of the elastic reset piece 16, the limiting part 141 and the matching part 132 are in concave-convex matching, so that the filter bottle cap 11, the plug 13 and the filter bottle body 12 cannot rotate relatively. When it is necessary to rotate the filter bottle cap 11 relative to the filter bottle body 12, the elastic restoring force can be overcome, so that the limiting member 14 moves out of the first position, and the engaging portion 132 is disengaged from the limiting portion 141.

More specifically, in one embodiment, as shown in fig. 5 and 6, the limiting member 14 is provided with a guiding inclined surface 142. As shown in fig. 1 to 3, the guiding inclined surface 142 is disposed obliquely with respect to the axis of the insertion hole 1121, in other words, the guiding inclined surface 142 is disposed obliquely with respect to the moving direction thereof. The distance between the portion of the guiding inclined surface 142 away from the fitting portion 132 and the axis of the insertion hole 1121 is greater than the distance between the portion of the guiding inclined surface 142 close to the fitting portion 132 and the axial direction of the insertion hole 1121.

When the filter bottle cap 11 needs to be rotated relative to the filter bottle body 12, a force is applied to the guide inclined surface 142, and under the guiding action of the guide inclined surface 142, the limiting member 14 moves in a direction away from the engaging portion 132, so that the limiting member 14 moves out of the first position, and the engaging portion 132 is disengaged from the limiting portion 141.

In particular, the inclined guide surface 142 may be formed on a surface of the stopper 14 facing away from the filter bottle body 12. For example, at the assembly angle shown in fig. 2, the guiding slope 142 can be formed on the top surface of the limiting member 14. Alternatively, the guiding inclined surface 142 may also be formed on the side surface of the limiting member 14.

More specifically, in one embodiment, the insertion hole 1121 is disposed along a radial direction of the filter bottle cap 11, as shown in fig. 5 and 6, a notch 143 is formed on a surface of the retaining member 14 facing away from the filter bottle body 12, and the guiding inclined surface 142 is a side wall of the notch 143.

Specifically, the guiding inclined surface 142 is a side wall of the notch 143 away from the matching portion 132.

Further, to further improve the convenience of operation, in one embodiment, the filter element assembly 10 further comprises a wrench 17, as shown in fig. 7, the wrench 17 is provided with a top block 171 capable of pressing against the guide slope 142. In use, the top block 171 of the wrench 17 is directly pressed on the guiding inclined surface 142, so that the limiting member 14 moves.

Further, when the outer peripheral surface of the side wall of the mounting body 112 is polygonal, as shown in fig. 7, a polygonal frame 172 matching with the side wall of the mounting body 112 may be provided on the wrench 17. So that the wrench 17 can be more quickly fitted over the mounting body 112.

Further, in one embodiment, as shown in fig. 7, the top block 171 is located on the polygonal frame 172 at a position corresponding to the guide slope 142.

Thus, as shown in fig. 1 to 4, when the polygonal frame 172 is fitted on the side wall of the mounting body 112, the top block 171 just corresponds to the guiding inclined surface 142, and the top block 171 applies a downward force to the guiding inclined surface 142, so that the limiting member 14 moves away from the engaging portion 132.

After the limiting part 141 is separated from the matching part 132, the wrench 17 is continuously utilized to rotate the filter bottle cap 11, the operation is convenient, and the torque can be increased based on the wrench 17, so that the acting force required to be applied by an operator is reduced.

Further, in an embodiment, as shown in fig. 5 and 6, the limiting member 14 includes a T-shaped limiting member and a limiting portion 141 disposed on the limiting member. Positioning columns 145 for installing the elastic reset piece 16 are arranged on the left and right cantilevers 144 of the limiting block, and the positioning columns 145 are axially arranged along the insertion holes 1121. Specifically, the elastic restoring element 16 may include a compression spring, the compression spring is sleeved outside the positioning pillar 145, one end of the compression spring abuts against the cantilever 144, and the other end of the compression spring abuts against a side wall of the mounting body 112.

Further, as shown in fig. 5 and 6, the notch 143 is located on the middle main arm 146 of the limiting block at a position far from the cantilever 144, and the limiting part 141 is located on an end surface of the limiting block far from the notch 143. As shown in fig. 2 and 3, when the limiting member 14 moves forward to the first position, the guiding inclined surface 142 is at least partially located outside the sidewall of the mounting body 112. So that the top block 171 can press against the guiding inclined surface 142 when the wrench 17 is mounted on the mounting body 112.

Further, in order that the stopper 14 inserted into the insertion hole 1121 in the radial direction of the filter bottle cap 11 does not rotate relative to the filter bottle cap 11, as shown in fig. 1, the intermediate main arm 146 is positioned in the insertion hole 1121, and the width of the intermediate main arm 146 coincides with the width of the insertion hole 1121.

More specifically, in one embodiment, as shown in fig. 2 and 3, the through hole 1122 is provided on the bottom wall of the mounting body 112 at a position corresponding to the mating portion 132. One end of the connecting element 15 passes through the through hole 1122 to be connected with the matching portion 132, the other end of the connecting element 15 is a limiting end, and the limiting end is in limiting matching with the mounting body 112, so that the connecting element 15 can rotate relative to the bottom wall of the mounting body 112 and cannot move in the axial direction of the filter bottle cap 11.

Further, as shown in fig. 1 to 3, a sealing ring 18 is disposed between the plug 13 and the sidewall of the filter flask body 12.

Further, in one embodiment, as shown in fig. 1, the end of the filter body 12 facing the plug 13 is provided with the convex teeth 123, and the convex teeth 123 are plural, and the plural convex teeth 123 are arranged at intervals in the circumferential direction of the filter body 12. As shown in fig. 1 and 8, a ring of the teeth grooves 131 is formed on the plug 13 at a position facing the teeth 123.

When the stopper 13 is positioned in the filter body 12 to close the first bottle opening 121, the teeth 123 are inserted into the teeth grooves 131. Also, in order to facilitate the engagement between the teeth 123 and the teeth grooves 131 during the assembly process, the teeth grooves 131 are arranged one turn in the circumferential direction of the stopper 13.

Further, in another embodiment, a water purifier is provided, comprising the filter element assembly 10.

According to the scheme, the filter element assembly 10 in any one of the embodiments is adopted, so that in the process of replacing the filter element 19, before the filter bottle body 12 is not detached from the whole water purifier, the filter bottle cover 11, the plug 13 and the filter bottle body 12 are integrated and cannot rotate relative to each other, and the water leakage can be avoided. When the filter flask body 12 is detached from the water purifier, the position of the limiting member 14 is adjusted, so that the filter flask cover 11 can rotate relative to the plug 13, the filter flask cover 11 is screwed off from the filter flask body 12, the plug 13 is pulled out from the first opening 121, and then the filter core 19 in the filter flask body 12 is replaced.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (20)

1. The utility model provides a filter element group spare, its characterized in that, includes filter flask lid, filter flask body and stopper, the stopper is located with first bottleneck shutoff in the filter flask body, the filter flask lid is twisted soon along self circumference and is in the first bottleneck department of filter flask body, one of them is equipped with the dogtooth in stopper and the filter flask body, and another is equipped with the tooth's socket, the dogtooth inserts in the tooth's socket, the restriction stopper is in for the filter flask body circumferencial direction rotates, the filter flask lid with be equipped with the locating part between the stopper, the locating part can for filter flask lid and/or stopper motion make filter flask lid circumferencial direction the filter flask lid can switch between rotatable and non-rotatable two kinds of states for the stopper.

2. The filter element assembly according to claim 1, wherein the stopper is inserted into the filter cap in a first direction so as not to rotate relative to the filter cap in a circumferential direction of the filter cap, the stopper is movable back and forth in the first direction relative to the filter cap, and when the stopper is moved forward to a first position, the stopper portion is engaged with the engaging portion of the plug in a concave-convex manner so as to restrict the filter cap from rotating relative to the plug in the circumferential direction of the filter cap, and when the stopper is moved out of the first position, the stopper portion is disengaged from the engaging portion.

3. The filter element assembly according to claim 2, wherein the retaining element is inserted in the filter cap in a radial direction of the filter cap or in an axial direction of the filter cap.

4. The filter element assembly according to claim 2, wherein one of said retention portion and said engagement portion is a protrusion and the other is provided with a groove matching said protrusion.

5. The filter element assembly according to claim 2, wherein the filter cap is axially divided into a mounting ring and a mounting body, the mounting ring is adapted to be screwed to the filter body, the mounting body is provided with a socket, the limiting member is located in the socket, and the fitting portion passes through the mounting ring and corresponds to the limiting portion.

6. The filter element assembly according to claim 5, wherein the insertion hole is arranged along a radial direction of the filter cap, the fitting portion extends to an axial extension line of the insertion hole, a groove is arranged on the fitting portion in a direction facing an outer peripheral surface of the insertion hole, the groove is arranged along an axial direction of the filter cap, and the limiting portion is a protrusion matched with the groove.

7. The filter element assembly according to claim 6, wherein the fitting part is a cylindrical protrusion arranged along the axial direction of the filter cap, the outer circumferential surface of the fitting part is provided with a plurality of grooves, and the plurality of grooves are arranged at intervals along the circumferential direction of the fitting part.

8. The filter element assembly according to claim 6, wherein the plug is provided with a support protrusion on its end face facing the mounting body, the support protrusion abutting against a face of the retaining member facing the filter body, so that the retaining member can slide in the radial direction of the filter cap.

9. The filter element assembly according to claim 8, wherein the supporting protrusion is an annular protrusion, the supporting protrusion surrounds the outer periphery of the engaging portion, the number of the limiting members and the number of the insertion holes are two, the limiting members correspond to the insertion holes one by one, and the two insertion holes are opposite to each other.

10. The filter element assembly according to claim 5, wherein the mounting body is an open-ended cover structure, the side wall of the mounting body being connected to the mounting ring, the insertion hole being located in the side wall of the mounting body.

11. The filter element assembly according to claim 10, wherein an elastic restoring member is disposed between the limiting member and the side wall of the mounting body for providing an elastic restoring force to the limiting member moving in a direction approaching the engaging portion.

12. The filter element assembly according to claim 11, wherein the retaining member is provided with a guiding inclined surface, the guiding inclined surface is arranged obliquely relative to the axis of the insertion hole, and the distance between the part of the guiding inclined surface far away from the matching part and the axis of the insertion hole is larger than the distance between the part of the guiding inclined surface close to the matching part and the axial direction of the insertion hole.

13. The filter element assembly according to claim 12, wherein the insertion hole is arranged along a radial direction of the filter bottle cap, a notch is arranged on a surface of the limiting member facing away from the filter bottle body, and the guide slope is a side wall of the notch.

14. The filter element assembly according to claim 13, wherein said limiting member comprises a T-shaped limiting member and a limiting portion disposed on said limiting member, positioning posts for mounting said elastic restoring member are disposed on both left and right cantilevers of said limiting member, said positioning posts are disposed axially along said insertion hole, said notch is disposed on a middle main arm of said limiting member at a position away from said cantilevers, said limiting portion is disposed on an end surface of said limiting member away from said notch, and when said limiting member is moved forward to said first position, said guiding inclined surface is at least partially disposed outside a side wall of said mounting body.

15. The filter element assembly according to claim 12, further comprising a wrench provided with a top block capable of pressing against the guide ramp.

16. The filter element assembly according to claim 15, wherein the peripheral surface of the side wall of the mounting body is polygonal, the wrench has a polygonal frame matching with the side wall of the mounting body, and the top block is located at a position on the polygonal frame corresponding to the guiding inclined plane.

17. The filter element assembly according to claim 10, further comprising a wrench, wherein the peripheral surface of the side wall of the mounting body is polygonal, and the wrench is provided with a polygonal frame matching with the side wall of the mounting body.

18. The filter element assembly according to claim 10, further comprising a connecting member, wherein a through hole is provided on the bottom wall of the mounting body at a position corresponding to the engaging portion, one end of the connecting member passes through the through hole to be connected with the engaging portion, the other end of the connecting member is a limiting end, and the limiting end is in limiting fit with the mounting body, so that the connecting member can rotate relative to the bottom wall of the mounting body and cannot move in the axial direction of the filter bottle cap.

19. The filter element assembly according to any one of claims 1 to 18, wherein said projecting teeth are provided on the end of said filter body facing said plug, said projecting teeth are plural, said plural projecting teeth are arranged at intervals in the circumferential direction of said filter body, and said plug is provided with a ring of said splines at a position facing said projecting teeth.

20. A water purification machine comprising a filter element assembly according to any one of claims 1 to 19.

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