Filter element assembly and water purifier

Abstract

The present invention relates to a filter element assembly and a water purifier. The filter element assembly includes a filter bottle cap, a filter bottle body, and a plug. The plug is located in the filter bottle body to seal a first bottle opening. The filter bottle cap is screwed onto the first bottle opening of the filter bottle body along its own circumference. One of the plug and the filter bottle body is provided with a convex tooth, and the other is provided with a tooth groove. The convex tooth is inserted into the tooth groove to limit the plug from rotating relative to the filter bottle body in the circumferential direction of the filter bottle body. A limiting member is provided between the filter bottle cap and the plug. The limiting member can move relative to the filter bottle cap and / or the plug, so that the filter bottle cap can switch between a rotatable and non-rotatable state relative to the plug in the circumferential direction of the filter bottle cap. During the process of replacing the filter element, before the filter bottle body is removed from the water purifier, the limiting member moves to a state where the filter bottle cap cannot rotate relative to the plug, thereby limiting the filter bottle body, the plug, and the filter bottle cap as a whole and preventing them from rotating relative to each other, thereby preventing water leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, in particular to a filter element assembly and a water purifier. Background Art

[0002] The filtration capacity of a water purifier primarily depends on the filter element. In the field of water purification equipment technology, to extend the lifespan of a water purifier, the filter element is replaced after a period of use to restore its filtration capacity. However, for water purifiers with replaceable filter elements, the filter cap and the filter body must be removable to accommodate filter replacements. Therefore, the cap can easily become loose, leading to water leaks. Summary of the Invention

[0003] Aiming at the problem of water leakage that is prone to occur in a water purifier with a replaceable filter element, the present invention proposes a filter element assembly and a water purifier, which effectively avoid the occurrence of water leakage.

[0004] A filter element assembly comprises a filter bottle cover, a filter bottle body and a plug, the plug being located in the filter bottle body to seal a first bottle opening, the filter bottle cover being screwed on the first bottle opening of the filter bottle body along its own circumference, one of the plug and the filter bottle body being provided with a convex tooth, and the other being provided with a tooth groove, the convex tooth being inserted into the tooth groove to limit the plug from rotating relative to the filter bottle body in the circumferential direction of the filter bottle body, a limiting member being provided between the filter bottle cover and the plug, the limiting member being able to move relative to the filter bottle cover and / or the plug, so that the filter bottle cover can switch between a rotatable state and a non-rotatable state relative to the plug in the circumferential direction of the filter bottle cover.

[0005] The above solution provides a filter element assembly. During the process of replacing the filter element, before the filter bottle body is removed from the water purifier, the stopper blocks the first bottle opening of the filter bottle body, and the cooperation between the protruding teeth and the tooth grooves prevents the stopper from rotating relative to the filter bottle body. At this time, the limiting member moves to a state where the filter bottle cover cannot rotate relative to the stopper, thereby limiting the filter bottle body, the stopper and the filter bottle cover as a whole and preventing relative rotation, ensuring that the filter bottle cover is tightened on the filter bottle body. At the same time, the stopper blocks the first bottle opening to prevent water leakage. After the filter bottle body is removed from the water purifier, the limiting member is adjusted to a state where the filter bottle cover can rotate relative to the stopper, thereby unscrewing the filter bottle cover from the filter bottle body, pulling the stopper out of the first bottle opening, and then replacing the filter element in the filter bottle body.

[0006] In one embodiment, the limit member is inserted into the filter bottle cover along a first direction and cannot rotate relative to the filter bottle cover in the circumferential direction of the filter bottle cover. The limit member can move back and forth in the first direction relative to the filter bottle cover. When the limit member moves forward to the first position, the limit portion of the limit member and the matching portion of the plug are matched in a concave-convex manner to limit the filter bottle cover from rotating relative to the plug in the circumferential direction of the filter bottle cover. When the limit member moves out of the first position, the limit portion is disengaged from the matching portion.

[0007] In one embodiment, the limiting member is inserted into the filter bottle cover along the radial direction of the filter bottle cover, or the limiting member is inserted into the filter bottle cover along the axial direction of the filter bottle cover.

[0008] In one embodiment, one of the limiting portion and the matching portion is a protrusion, and the other is provided with a groove matching the protrusion.

[0009] In one embodiment, the filter bottle cover is divided into a mounting ring and a mounting body in the axial direction, the mounting ring is used to be screwed to the filter bottle body, the mounting body is provided with a socket, the limiter is located in the socket, the matching portion passes through the mounting ring and corresponds to the limiter

[0010] In one embodiment, the socket is arranged along the radial direction of the filter bottle cover, the matching portion extends to the axial extension line of the socket, a groove is provided on the outer peripheral surface of the matching portion facing the socket, the groove is arranged along the axial direction of the filter bottle cover, and the limiting portion is a protrusion matching the groove.

[0011] In one embodiment, the matching portion is a columnar protrusion arranged axially along the filter bottle cover, and a plurality of grooves are provided on the outer circumferential surface of the matching portion, and the plurality of grooves are arranged at intervals along the circumference of the matching portion.

[0012] In one embodiment, a support protrusion is provided on the end surface of the stopper facing the mounting body, and the support protrusion abuts against the surface of the limiting member facing the filter bottle body, so that the limiting member can slide radially along the filter bottle cover.

[0013] In one embodiment, the support protrusion is an annular protrusion, and the support protrusion surrounds the outer circumference of the mating portion. There are two limiters and two sockets, and the limiters correspond to the sockets one by one, and the two sockets are arranged opposite to each other.

[0014] In one embodiment, the mounting body is a cover structure with one end open, the side wall of the mounting body is connected to the mounting ring, and the insertion hole is located on the side wall of the mounting body.

[0015] In one embodiment, an elastic reset member is provided between the limiting member and the side wall of the mounting body, for providing an elastic reset force for the limiting member to move toward the matching portion.

[0016] In one embodiment, the limiting member is provided with a guiding slope, which is inclined relative to the axis of the socket, and the distance between the portion of the guiding slope away from the mating portion and the axis of the socket is greater than the distance between the portion of the guiding slope close to the mating portion and the axial direction of the socket.

[0017] In one embodiment, the insertion hole is arranged along the radial direction of the filter bottle cover, a notch is provided on the surface of the limiting member facing away from the filter bottle body, and the guiding inclined surface is a side wall of the notch.

[0018] In one embodiment, the limiting member includes a T-shaped limiting block and a limiting portion arranged on the limiting block, and the left and right cantilevers of the limiting block are provided with positioning columns for installing the elastic reset member, and the positioning columns are arranged along the axial direction of the socket, and the notch is located on the middle main arm of the limiting block away from the cantilever, and the limiting portion is located on the end face of the limiting block away from the notch, and when the limiting member moves forward to the first position, the guide slope is at least partially located outside the side wall of the mounting body.

[0019] In one embodiment, a wrench is further included, wherein the wrench is provided with a top block capable of pressing against the guide inclined surface.

[0020] In one embodiment, the outer peripheral surface of the side wall of the mounting body is a polygon, the wrench is provided with a polygonal frame matching the side wall of the mounting body, and the top block is located at a position on the polygonal frame corresponding to the guide inclined surface.

[0021] In one embodiment, a wrench is further included, the outer peripheral surface of the side wall of the mounting body is a polygon, and the wrench is provided with a polygonal frame matching the side wall of the mounting body.

[0022] In one embodiment, a connecting piece is further included, and a through hole is provided on the bottom wall of the mounting body at a position corresponding to the matching portion. One end of the connecting piece passes through the through hole and is connected to the matching portion, and the other end of the connecting piece is a limiting end, and the limiting end is limitedly matched with the mounting body, so that the connecting piece can rotate relative to the bottom wall of the mounting body, but cannot move in the axial direction of the filter bottle cover.

[0023] In one embodiment, the filter bottle body is provided with the protruding teeth at the end facing the plug, and there are multiple protruding teeth. The multiple protruding teeth are spaced apart in the circumferential direction of the filter bottle body, and the plug is provided with a circle of tooth grooves facing the protruding teeth.

[0024] A water purifier comprises the above-mentioned filter element assembly.

[0025] The above solution provides a water purifier, which adopts the filter element assembly described in any of the above embodiments. Therefore, during the process of replacing the filter element, before the filter bottle body is removed from the water purifier, the filter bottle cover, the stopper, and the filter bottle body are integrated and do not rotate relative to each other. The filter bottle cover and the stopper will not loosen, thereby preventing water leakage. After the filter bottle body is removed from the water purifier, the position of the limiter is adjusted so that the filter bottle cover can rotate relative to the stopper, and then the filter bottle cover is unscrewed from the filter bottle body, the stopper is pulled out from the first bottle opening, and then the filter element in the filter bottle body is removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is an exploded view of the filter element assembly described in this embodiment;

[0029] Figure 2 is a cross-sectional view of the filter element assembly described in this embodiment;

[0030] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0031] Figure 4 This is a top view of the filter element assembly described in this embodiment;

[0032] Figure 5 A top view of the limiting member of this embodiment;

[0033] Figure 6 is a cross-sectional view of the limiting member described in this embodiment;

[0034] Figure 7Schematic diagram of the structure of the wrench according to this embodiment;

[0035] Figure 8 Schematic diagram of the structure of the plug described in this embodiment.

[0036] Description of reference numerals:

[0037] 10. Filter element assembly; 11. Filter bottle cover; 111. Mounting ring; 112. Mounting body; 1121. Insertion hole; 1122. Through hole; 1123. Perforation; 1124. Support rod; 12. Filter bottle body; 121. First bottle opening; 122. Second bottle opening; 123. Protruding teeth; 13. Stopper; 131. Tooth groove; 132. Fitting part; 1321. Groove; 1322. Mounting groove; 133. Supporting protrusion; 14. Limiting member; 141. Limiting part; 142. Guide slope; 143. Notch; 144. Cantilever; 145. Positioning column; 146. Intermediate main arm; 15. Connecting member; 16. Elastic reset member; 17. Wrench; 171. Top block; 172. Polygonal frame; 18. Sealing ring; 19. Filter element. DETAILED DESCRIPTION

[0038] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] like Figures 1 to 4 As shown in FIG. 1 , in one embodiment, a filter element assembly 10 is provided, comprising a filter bottle cap 11, a filter bottle body 12 and a plug 13. Figure 2 and Figure 3 As shown, the stopper 13 is located in the filter bottle body 12 to block the first bottle opening 121. The filter bottle cover 11 is screwed on the first bottle opening 121 of the filter bottle body 12 along its own circumference. One of the stopper 13 and the filter bottle body 12 is provided with a convex tooth 123, and the other is provided with a tooth groove 131. The convex tooth 123 is inserted into the tooth groove 131 to limit the stopper 13 from rotating relative to the filter bottle body 12 in the circumferential direction of the filter bottle body 12. Specifically, in some embodiments, as Figure 1 As shown, the filter bottle body 12 is provided with the protruding teeth 123. Figure 8As shown, the stopper 13 is provided with the tooth groove 131. A limiter 14 is provided between the filter bottle cover 11 and the stopper 13. The limiter 14 can move relative to the filter bottle cover 11 and / or the stopper 13, so that the filter bottle cover 11 can switch between a rotatable state and a non-rotatable state relative to the stopper 13 in the circumferential direction of the filter bottle cover 11.

[0040] In a typical filter element assembly 10, the second opening 122 of the filter bottle body 12 cooperates with the filter element mounting seat, allowing the water flow path in the water purifier to communicate with the filter element 19 in the filter bottle body 12. To replace the filter element 19, the filter element assembly 10 must first be removed from the water purifier, disconnecting the filter element mounting seat from the filter bottle body 12. The filter bottle cap 11 and stopper 13 at the first opening 121 are then removed, and the filter element 19 in the filter bottle body 12 is removed and replaced with a new one.

[0041] It can be seen from this that the filter bottle body 12 and the filter element mounting seat, the filter bottle cover 11 and the filter bottle body 12, and the plug 13 and the filter bottle body 12 all need to be removable. Then, during the process of replacing the filter element 19, the filter bottle cover 11 and the plug 13 may become loose before the filter bottle body 12 is removed from the filter element mounting seat, and water leakage will occur at this time.

[0042] Based on this, the above scheme provides a filter element assembly 10. During the process of replacing the filter element 19, before the filter bottle body 12 is removed from the water purifier, the stopper 13 blocks the first bottle mouth 121 of the filter bottle body 12, and the cooperation between the convex teeth 123 and the tooth grooves 131 makes the stopper 13 unable to rotate relative to the filter bottle body 12. At this time, the limiting member 14 moves to a state where the filter bottle cover 11 cannot rotate relative to the stopper 13, so that the filter bottle body 12, the stopper 13 and the filter bottle cover 11 are limited as a whole and will not rotate relative to each other, ensuring that the filter bottle cover 11 is tightened on the filter bottle body 12, and at the same time the stopper 13 blocks the first bottle mouth 121 to avoid water leakage. After the filter bottle body 12 is removed from the water purifier, the limit member 14 is adjusted to a state where the filter bottle cover 11 can rotate relative to the plug 13, thereby unscrewing the filter bottle cover 11 from the filter bottle body 12, pulling the plug 13 out of the first bottle mouth 121, and then replacing the filter element 19 in the filter bottle body 12.

[0043] In the process of removing the filter bottle cover 11 and the plug 13 from the filter bottle body 12, the filter bottle cover 11 and the plug 13 can be removed from the filter bottle body 12 independently and in sequence. In other words, the filter bottle cover 11 can be unscrewed from the filter bottle body 12 first, and then the plug 13 can be pulled out; or the filter bottle cover 11 and the plug 13 are positioned at the axial upper limit of the filter bottle cover 11, and the filter bottle cover 11 can simultaneously drive the plug 13 to be pulled out from the filter bottle body 12 during the process of being unscrewed from the filter bottle body 12.

[0044] For example, in one embodiment, Figure 2 and Figure 3 As shown, the filter element assembly 10 further includes a connector 15, one end of which is connected to the plug 13, and the other end of which is limitedly engaged with the filter bottle cover 11, so that the connector 15 can rotate relative to the filter bottle cover 11 but cannot move in the axial direction of the filter bottle cover 11. Therefore, when the filter bottle cover 11 is screwed relative to the filter bottle body 12 to be withdrawn from the filter bottle body 12, under the action of the connector 15, the plug 13 moves along the axial direction of the filter bottle body 12 along with the filter bottle cover 11, and the filter bottle body 12 is pulled out.

[0045] When a new filter element 19 is replaced into the filter bottle body 12 , the stopper 13 is squeezed into the filter bottle body 12 by the filter bottle cover 11 during the process of being screwed onto the filter bottle body 12 .

[0046] Furthermore, in one embodiment, Figures 1 to 4 As shown, the limiting member 14 is inserted into the filter bottle cover 11 along the first direction and cannot rotate relative to the filter bottle cover 11 in the circumferential direction of the filter bottle cover 11. The limiting member 14 can move back and forth in the first direction relative to the filter bottle cover 11 to switch the state.

[0047] Specifically, if Figure 2 and Figure 3 As shown, in one embodiment, the limiting member 14 can be inserted into the filter bottle cover 11 along the radial direction of the filter bottle cover 11. Alternatively, in another embodiment, the limiting member 14 is inserted into the filter bottle cover 11 along the axial direction of the filter bottle cover 11.

[0048] When the limiting member 14 is inserted into the filter bottle cover 11 along the radial direction of the filter bottle cover 11, based on the assembly orientation relationship between the limiting member 14 and the filter bottle cover 11, the limiting member 14 cannot rotate in the circumferential direction of the filter bottle cover 11 relative to the filter bottle cover 11. When the limiting member 14 is inserted into the filter bottle cover 11 along the axial direction of the filter bottle cover 11, the limiting member 14 and the filter bottle cover 11 can be matched with each other in a concave-convex manner, so that the limiting member 14 cannot rotate in the circumferential direction of the filter bottle cover 11 relative to the filter bottle cover 11; alternatively, the outer circumferential surface of the limiting member 14 is set as a polygonal structure, and the side wall of the insertion hole 1121 on the filter bottle cover 11 for inserting the limiting member 14 is set as a polygon matching the outer circumferential 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 cover 11.

[0049] Furthermore, when the limiting member 14 moves forward to the first position, the limiting portion 141 of the limiting member 14 engages with the matching portion 132 of the stopper 13 in a concave-convex manner, thereby limiting the rotation of the filter bottle cover 11 relative to the stopper 13 in the circumferential direction of the filter bottle cover 11. When the limiting member 14 moves out of the first position, the limiting portion 141 disengages from the matching portion 132.

[0050] Because the limiting member 14 cannot rotate circumferentially relative to the filter bottle cover 11, when the limiting portion 141 of the limiting member 14 engages with the mating portion 132 of the stopper 13 in a concave-convex manner, the filter bottle cover 11 can be indirectly restricted from rotating relative to the filter bottle body 12. In other words, the filter bottle cover 11, the stopper 13, and the filter bottle body 12 form a single unit and cannot rotate relative to each other. When it is necessary to remove the filter bottle cover 11 and the stopper 13 from the filter bottle body 12, the limiting member 14 is moved out of the first position, so that the limiting portion 141 disengages from the mating portion 132. Then, relative rotation between the stopper 13 and the filter bottle cover 11 can occur, and the filter bottle cover 11 can be unscrewed from the filter bottle body 12.

[0051] like Figure 2 and Figure 3 As shown, the stopper 13 is located in the space enclosed by the filter bottle cover 11. Without the limiting effect of the stopper 14, the stopper 13 and the filter bottle cover 11 can rotate relative to each other. Even if the stopper 13 and the filter bottle cover 11 are indirectly engaged via the connector 15, as described above, the connector 15 can only limit the axial movement of the stopper 13 and the filter bottle cover 11 within the filter bottle body 12, but does not restrict the rotation between the stopper 13 and the filter bottle cover 11. The rotation described herein refers to rotation about the axis of the filter bottle cover 11 or the filter bottle body 12.

[0052] 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 that matches the protrusion. Thus, when the limiting member 14 moves to the first position, the protrusion inserts into the groove 1321, restricting the filter bottle cover 11 from rotating relative to the stopper 13 in the circumferential direction of the filter bottle cover 11.

[0053] More specifically, in one embodiment, Figures 1 to 3 As shown, the filter bottle cover 11 is divided into a mounting ring 111 and a mounting body 112 in the axial direction. The mounting ring 111 is used to be screwed together with the filter bottle body 12. The mounting body 112 is provided with a socket 1121. The limiting member 14 is located in the socket 1121. The matching portion 132 passes through the mounting ring 111 and corresponds to the limiting portion 141. Therefore, the limiting member 14 can move in the axial direction of the socket 1121, so that the limiting portion 141 and the matching portion 132 come into contact and form a concave-convex fit.

[0054] When the limiting member 14 is inserted into the filter bottle cover 11 along the radial direction of the filter bottle cover 11, the axis of the socket 1121 is arranged along the radial direction of the filter bottle cover 11; when the limiting member 14 is inserted into the filter bottle cover 11 along the axial direction of the filter bottle cover 11, the axis of the socket 1121 is arranged along the axial direction of the filter bottle cover 11.

[0055] Furthermore, in one embodiment, Figures 1 to 4 As shown, a through hole 1122 is provided on the mounting body 112, and one end of the connecting member 15 passes through the through hole 1122 and is connected to the matching portion 132, and the other end of the connecting member 15 is a limiting end, and the limiting end is limitedly matched with the mounting body 112, so that the connecting member 15 can rotate relative to the mounting body 112, but cannot move in the axial direction of the filter bottle cover 11.

[0056] Furthermore, in one embodiment, Figures 1 to 3 As shown, the insertion hole 1121 is arranged along the radial direction of the filter bottle cover 11, and the matching portion 132 extends to the axial extension line of the insertion hole 1121. Figure 8 As shown, a groove 1321 is provided on the outer peripheral surface of the matching portion 132 facing the insertion hole 1121 , and the groove 1321 is arranged along the axial direction of the filter bottle cover 11 , and the limiting portion 141 is a protrusion matching the groove 1321 .

[0057] Optionally, a protrusion may be provided on the outer peripheral surface of the matching portion 132 facing the insertion hole 1121 , and a groove may be provided on the limiting portion 141 .

[0058] More specifically, in one embodiment, Figure 8 As shown, the matching portion 132 is a columnar protrusion arranged axially along the filter bottle cover 11 , and the outer peripheral surface of the matching portion 132 is provided with a plurality of grooves 1321 , and the plurality of grooves 1321 are arranged at intervals along the circumference of the matching portion 132 .

[0059] like Figure 2 and Figure 3 As shown, when the filter bottle cover 11 and the plug 13 are both assembled on the filter bottle body 12, the fitting portion 132 extends through the mounting ring 111 into the mounting body 112, and the limiting member 14 passing through the insertion hole 1121 is just opposite to the outer peripheral surface of the fitting portion 132.

[0060] More specifically, Figures 1 to 4 As shown, the connecting member 15 may include a screw. The mating portion 132 is provided with a mounting groove 1322, which is arranged axially along the filter bottle cover 11. The screw passes through the through hole 1122 and is installed in the mounting groove 1322. The sidewall of the through hole 1122 is provided with a limiting protrusion, which is located on the side of the screw nut close to the mating portion 132, thereby allowing the stopper 13 and the filter bottle cover 11 to move synchronously in the axial direction of the filter bottle cover 11. The sidewall of the through hole 1122 and the screw are clearance-fitted, so that the provision of the screw does not restrict the rotation of the filter bottle cover 11 relative to the stopper 13.

[0061] Furthermore, in one embodiment, Figures 1 to 3 as well as Figure 8 As shown, the end surface of the plug 13 facing the mounting body 112 is provided with a supporting protrusion 133. Figure 2 and Figure 3 As shown, the support protrusion 133 abuts against the surface of the limiting member 14 facing the filter bottle body 12 , so that the limiting member 14 can slide along the radial direction of the filter bottle cover 11 .

[0062] Under the cooperative action of the supporting protrusion 133 and the inserting hole 1121 , the limiting member 14 can slide smoothly in the radial direction of the filter bottle cover 11 .

[0063] More specifically, in one embodiment, Figure 8 As shown, the support protrusion 133 is an annular protrusion, and the support protrusion 133 surrounds the outer periphery of the matching portion 132. Figures 1 to 4As shown, there are two limiters 14 and two insertion holes 1121, and the limiters 14 correspond to the insertion holes 1121 one by one, and the two insertion holes 1121 are arranged opposite to each other. Therefore, the annular support protrusion 133 can better support the two limiters 14, ensuring that the two limiters 14 can move normally.

[0064] More specifically, in one embodiment, Figures 1 to 4 As shown, the mounting body 112 is a cover structure with one end open. The sidewall of the mounting body 112 is connected to the mounting ring 111, and the insertion hole 1121 is located on the sidewall of the mounting body 112. The limiting member 14 passes through the insertion hole 1121 and moves radially along the filter bottle cover 11. The mating portion 132 passes through the mounting ring 111 and extends into the mounting body 112. The limiting member 14 can move axially along the insertion hole 1121 until the limiting portion 141 and the mating portion 132 engage in a concave-convex manner.

[0065] Further, if Figure 4 As shown, a plurality of through holes 1123 are provided on the bottom wall of the mounting body 112 , so that the limiting member 14 is partially exposed to the outside, making it easy to check and install the limiting member 14 .

[0066] Specifically, in one embodiment, Figure 4 As shown, the shape of the outer peripheral surface of the side wall of the mounting body 112 is a polygon, and the plurality of through holes 1123 are arranged at intervals in the circumferential direction of the mounting body 112, and support rods 1124 are provided between adjacent through holes 1123. Figure 4 As shown, the shape enclosed by the outer peripheral surface of the side wall of the mounting body 112 is a hexagon, and there are six through holes 1123 .

[0067] Furthermore, in one embodiment, Figure 1 and Figure 4 As shown, an elastic reset member 16 is provided between the limiting member 14 and the side wall of the mounting body 112 , for providing an elastic reset force for the limiting member 14 to move toward the matching portion 132 .

[0068] Before the filter bottle body 12 is removed from the water purifier, the elastic return member 16 acts to engage the limiting portion 141 with the mating portion 132, preventing relative rotation between the filter bottle cover 11, the stopper 13, and the filter bottle body 12. When the filter bottle cover 11 needs to be rotated relative to the filter bottle body 12, the elastic return force can be overcome, causing the limiting member 14 to move out of the first position and the mating portion 132 to disengage from the limiting portion 141.

[0069] More specifically, in one embodiment, Figure 5 and Figure 6 As shown, the limiting member 14 is provided with a guide slope 142. Figures 1 to 3 As shown, the guide slope 142 is tilted relative to the axis of the insertion hole 1121. In other words, the guide slope 142 is tilted relative to its own moving direction. The distance between the portion of the guide slope 142 away from the mating portion 132 and the axis of the insertion hole 1121 is greater than the distance between the portion of the guide slope 142 close to the mating portion 132 and the axial direction of the insertion hole 1121.

[0070] When it is necessary to rotate the filter bottle cover 11 relative to the filter bottle body 12, force is applied to the guide slope 142. Under the guiding action of the guide slope 142, the limiting member 14 moves in a direction away from the matching portion 132, so that the limiting member 14 moves out of the first position, and the matching portion 132 is disengaged from the limiting portion 141.

[0071] Specifically, the guide slope 142 can be formed on the surface of the limiting member 14 away from the filter bottle body 12. Figure 2 At the assembly angle shown, the guide slope 142 can be formed on the top surface of the limiting member 14. Alternatively, the guide slope 142 can also be formed on the side surface of the limiting member 14.

[0072] More specifically, in one embodiment, the insertion hole 1121 is arranged along the radial direction of the filter bottle cover 11, such as Figure 5 and Figure 6 As shown, a notch 143 is provided on the surface of the limiting member 14 facing away from the filter bottle body 12 , and the guiding inclined surface 142 is a side wall of the notch 143 .

[0073] Specifically, the guiding inclined surface 142 is a side wall of the notch 143 away from the matching portion 132 .

[0074] Furthermore, in order to further improve the convenience of operation, in one embodiment, the filter element assembly 10 further includes a wrench 17, such as Figure 7 As shown, the wrench 17 is provided with a top block 171 that can be pressed against the guide inclined surface 142. During use, the top block 171 of the wrench 17 is directly pressed against the guide inclined surface 142, thereby moving the limit member 14.

[0075] Furthermore, when the outer peripheral surface of the side wall of the mounting body 112 is a polygon, Figure 7 As shown, a polygonal frame 172 matching the side wall of the mounting body 112 can be provided on the wrench 17 so that the wrench 17 can be more quickly sleeved on the mounting body 112 .

[0076] Furthermore, in one embodiment, Figure 7 As shown, the top block 171 is located on the polygonal frame 172 at a position corresponding to the guide slope 142 .

[0077] Thus, Figures 1 to 4 As shown, when the polygonal frame 172 is sleeved on the side wall of the mounting body 112 , the top block 171 just corresponds to the guide slope 142 , and the top block 171 applies a downward force to the guide slope 142 , so that the limiting member 14 moves in a direction away from the matching portion 132 .

[0078] When the limiting portion 141 is disengaged from the matching portion 132, the filter bottle cover 11 can be rotated by continuing to use the wrench 17, which is easy to operate. In addition, the wrench 17 can increase the torque, thereby reducing the force required to be applied by the operator.

[0079] Furthermore, in one embodiment, Figure 5 and Figure 6 As shown, the limiting member 14 includes a T-shaped limiting block and a limiting portion 141 disposed on the limiting block. Positioning posts 145 for mounting the elastic return member 16 are provided on the left and right cantilevers 144 of the limiting block. The positioning posts 145 are axially disposed along the insertion hole 1121. Specifically, the elastic return member 16 may include a compression spring that is sheathed around the positioning posts 145. One end of the compression spring abuts the cantilever 144, and the other end abuts the side wall of the mounting body 112.

[0080] Further, if Figure 5 and Figure 6 As shown, the notch 143 is located on the middle main arm 146 of the limit block, away from the cantilever 144, and the limit portion 141 is located on the end surface of the limit block, away from the notch 143. Figure 2 and Figure 3 As shown, when the limiting member 14 moves forward to the first position, the guiding inclined surface 142 is at least partially located outside the side wall of the mounting body 112. This allows the top block 171 to press against the guiding inclined surface 142 when the wrench 17 is mounted on the mounting body 112.

[0081] Furthermore, in order to prevent the limiting member 14 inserted into the insertion hole 1121 along the radial direction of the filter bottle cover 11 from rotating relative to the filter bottle cover 11, Figure 1 As shown, the middle main arm 146 is located in the insertion hole 1121 , and the width of the middle main arm 146 is consistent with the width of the insertion hole 1121 .

[0082] More specifically, in one embodiment, Figure 2 and Figure 3 As shown, 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 connector 15 passes through the through hole 1122 and is connected to the mating portion 132. The other end of the connector 15 is a limiting end that is engaged with the mounting body 112 in a limiting manner, so that the connector 15 can rotate relative to the bottom wall of the mounting body 112 but cannot move in the axial direction of the filter bottle cover 11.

[0083] Further, if Figures 1 to 3 As shown, a sealing ring 18 is provided between the stopper 13 and the side wall of the filter bottle body 12 .

[0084] Furthermore, in one embodiment, Figure 1 As shown, the filter bottle body 12 is provided with the protruding teeth 123 at the end facing the plug 13. There are multiple protruding teeth 123, and the multiple protruding teeth 123 are spaced apart in the circumferential direction of the filter bottle body 12. Figure 1 and Figure 8 As shown, a circle of tooth grooves 131 is provided on the plug 13 at a position facing the protruding teeth 123 .

[0085] When the stopper 13 is located in the filter bottle body 12 and blocks the first bottle opening 121, the protruding teeth 123 are inserted into the tooth grooves 131. Moreover, in order to facilitate the engagement between the protruding teeth 123 and the tooth grooves 131 during assembly, the tooth grooves 131 are arranged along the circumference of the stopper 13.

[0086] Furthermore, in another embodiment, a water purifier is provided, comprising the above-mentioned filter element assembly 10.

[0087] The above solution provides a water purifier, which adopts the filter element assembly 10 described in any of the above embodiments. Therefore, during the process of replacing the filter element 19, before the filter bottle body 12 is removed from the water purifier, the filter bottle cover 11, the plug 13 and the filter bottle body 12 are a whole and cannot rotate relative to each other, thereby preventing water leakage. After the filter bottle body 12 is removed from the water purifier, the position of the limiter 14 is adjusted so that the filter bottle cover 11 can rotate relative to the plug 13, and then the filter bottle cover 11 is unscrewed from the filter bottle body 12, the plug 13 is pulled out from the first bottle mouth 121, and then the filter element 19 in the filter bottle body 12 is replaced.

[0088] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. 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, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0090] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0091] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0092] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0093] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A filter element assembly, characterized in that: The filter bottle body comprises a filter bottle cover, a filter bottle body and a plug, wherein the plug is located in the filter bottle body to seal the first bottle opening, the filter bottle cover is screwed on the first bottle opening of the filter bottle body along its own circumference, a plurality of protruding teeth are provided on the end of the filter bottle body facing the plug, and the plurality of protruding teeth are spaced apart in the circumference of the filter bottle body, a circle of tooth grooves is provided on the plug facing the protruding teeth, the protruding teeth are inserted into the tooth grooves to limit the rotation of the plug relative to the filter bottle body in the circumference of the filter bottle body, a limiting member is provided between the filter bottle cover and the plug, the limiting member can move relative to the filter bottle cover and / or the plug, so that the filter bottle cover can switch between a rotatable state and a non-rotatable state relative to the plug in the circumference of the filter bottle cover; The filter bottle cover is axially divided into a mounting ring and a mounting body, the mounting ring is used to be screwed together with the filter bottle body, the mounting body is provided with a socket, the limiting member is located in the socket, and the matching portion of the plug passes through the mounting ring and corresponds to the limiting portion of the limiting member; The end surface of the stopper facing the mounting body is provided with a supporting protrusion, and the supporting protrusion abuts against the surface of the limiting member facing the filter bottle body, so that the limiting member can slide along the radial direction of the filter bottle cover; The supporting protrusion is an annular protrusion, and the supporting protrusion surrounds the outer circumference of the matching portion. There are two limiting members and two inserting holes, and the limiting members correspond to the inserting holes one by one, and the two inserting holes are arranged opposite to each other.

2. The filter element assembly according to claim 1, characterized in that The limit member is inserted into the filter bottle cover along the first direction and cannot rotate relative to the filter bottle cover in the circumferential direction of the filter bottle cover. The limit member can move back and forth in the first direction relative to the filter bottle cover. When the limit member moves forward to the first position, the limiting portion of the limit member and the matching portion of the plug are matched in a concave-convex manner to limit the filter bottle cover from rotating relative to the plug in the circumferential direction of the filter bottle cover. When the limit member moves out of the first position, the limiting portion is disengaged from the matching portion.

3. The filter element assembly according to claim 2, characterized in that: The limiting member is inserted into the filter bottle cover along the radial direction of the filter bottle cover, or the limiting member is inserted into the filter bottle cover along the axial direction of the filter bottle cover.

4. The filter element assembly according to claim 2, characterized in that One of the limiting portion and the matching portion is a protrusion, and the other is provided with a groove matching the protrusion.

5. The filter element assembly according to claim 2, characterized in that: The socket is arranged along the radial direction of the filter bottle cover, the matching portion extends to the axial extension line of the socket, a groove is provided on the outer peripheral surface of the matching portion facing the socket, the groove is arranged along the axial direction of the filter bottle cover, and the limiting portion is a protrusion matching the groove.

6. The filter element assembly according to claim 5, characterized in that: The matching portion is a columnar protrusion arranged along the axial direction of the filter bottle cover, and the outer peripheral surface of the matching portion is provided with a plurality of the grooves, and the plurality of the grooves are arranged at intervals along the circumference of the matching portion.

7. The filter element assembly according to claim 2, characterized in that: The mounting body is a cover structure with one end open, the side wall of the mounting body is connected to the mounting ring, and the insertion hole is located on the side wall of the mounting body.

8. The filter element assembly according to claim 7, characterized in that: An elastic reset member is provided between the limiting member and the side wall of the mounting body, for providing an elastic reset force for the limiting member to move toward the matching portion.

9. The filter element assembly according to claim 8, characterized in that: The limiting member is provided with a guiding slope, which is inclined relative to the axis of the socket. The distance between the part of the guiding slope away from the matching part of the plug and the axis of the socket is greater than the distance between the part of the guiding slope close to the matching part and the axial direction of the socket.

10. The filter element assembly according to claim 9, characterized in that: The insertion hole is arranged along the radial direction of the filter bottle cover, a notch is provided on the surface of the limiting member facing away from the filter bottle body, and the guiding inclined surface is a side wall of the notch.

11. The filter element assembly according to claim 10, characterized in that: The limiting member includes a T-shaped limiting block and a limiting portion arranged on the limiting block. The left and right cantilevers of the limiting block are provided with positioning columns for installing the elastic reset member. The positioning columns are arranged along the axial direction of the jack. The notch is located on the middle main arm of the limiting block at a position away from the cantilever. The limiting portion is located on the end face of the limiting block away from the notch. When the limiting member moves forward to the first position, the guide inclined surface is at least partially located outside the side wall of the mounting body.

12. The filter element assembly according to claim 9, characterized in that Also included is a wrench, which is provided with a top block capable of pressing against the guide inclined surface.

13. The filter element assembly according to claim 12, characterized in that: The outer peripheral surface of the side wall of the mounting body is a polygon. The wrench is provided with a polygonal frame matching the side wall of the mounting body. The top block is located at a position on the polygonal frame corresponding to the guide inclined surface.

14. The filter element assembly according to claim 7, characterized in that It also includes a wrench, the shape surrounded 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 matching the side wall of the installation body.

15. The filter element assembly according to claim 7, characterized in that It also includes a connecting piece, a through hole is provided on the bottom wall of the mounting body at a position corresponding to the matching portion, one end of the connecting piece passes through the through hole and is connected to the matching portion, and the other end of the connecting piece is a limiting end, and the limiting end is limitedly matched with the mounting body, so that the connecting piece can rotate relative to the bottom wall of the mounting body, but cannot move in the axial direction of the filter bottle cover.

16. A water purifier, characterized in that: A filter element assembly comprising any one of claims 1 to 15.

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