Filter bottle body unit, detachable filter element assembly and water purifier

Abstract

The present invention relates to a filter bottle unit, a detachable filter element assembly, and a water purifier, comprising a stopper and a filter bottle, wherein one of the stopper and the filter bottle is provided with a guide protrusion, and the other is provided with a guide groove. The guide protrusion is located in the guide groove, and a clearance fit is formed between the sidewall of the guide groove and the guide protrusion in the direction in which the filter bottle cap is screwed. When the filter bottle cap is screwed onto the filter bottle, in order to facilitate the engagement of the protruding teeth with the tooth groove, a clearance fit is formed between the sidewall of the guide groove and the guide protrusion, so that the stopper can be rotated a certain angle in the direction in which the filter bottle cap is screwed so that the protruding teeth and the tooth groove can engage with each other, thereby improving assembly convenience and reducing the requirements for manufacturing precision.

Description

Technical Field

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

[0002] With the continuous development of water purifier equipment, in order to extend the service life of the water purifier, the filter element in the water purifier is generally designed as a replaceable assembly. In other words, after a period of use, the filtration capacity of the filter element will decrease with the passage of time. However, the water purifier housing and other components are still within the validity period. At this time, the water purifier can be replaced to restore the water purification capacity and extend the service life of the water purifier.

[0003] Since the filter cap screws in the same direction relative to the filter body as the filter body screws in relative to the water purifier housing, to prevent water leakage during filter cartridge replacement, the cap and body must be securely locked together while the filter body is still attached. Furthermore, after replacing the new filter cartridge, assembling the cap and body can be inconvenient. Summary of the Invention

[0004] In order to solve the problem of inconvenient assembly, the present invention proposes a filter bottle unit, a detachable filter element assembly and a water purifier, which can effectively improve the convenience of assembly.

[0005] A filter bottle unit, comprising:

[0006] A limiting member, wherein the limiting member is provided with a convex tooth for cooperating with a tooth groove on the filter bottle cover to limit the filter bottle cover from being unscrewed from the first bottle opening of the filter bottle body to open the first bottle opening, or the limiting member is provided with a tooth groove for cooperating with the convex tooth on the filter bottle cover to limit the filter bottle cover from being unscrewed from the first bottle opening of the filter bottle body to open the first bottle opening;

[0007] The filter bottle body, one of the limiting member and the filter bottle body is provided with a guide protrusion, and the other is provided with a guide groove, the guide protrusion is located in the guide groove, and a clearance is fitted between the side wall of the guide groove and the guide protrusion in the screwing direction of the filter bottle cover.

[0008] The above solution provides a filter bottle unit, wherein the limiting member and the filter bottle body cooperate with each other through the guide protrusion and the guide groove, so that the rotation of the limiting member relative to the filter bottle body in the screwing direction of the filter bottle cover is restricted. Therefore, when the filter bottle cover and the limiting member cooperate with each other through the protruding teeth and the tooth groove, the filter bottle cover cannot be loosened from the first bottle opening of the filter bottle body to open the first bottle opening, thereby achieving the effect of preventing water leakage. When the filter bottle cover is screwed onto the filter bottle body, in order to facilitate the cooperation between the protruding teeth and the tooth groove, the side wall of the guide groove and the guide protrusion are clearance-matched, so that the limiting member can rotate a certain angle in the screwing direction of the filter bottle cover so that the protruding teeth and the tooth groove can cooperate together, thereby improving the convenience of assembly and reducing the requirements for manufacturing precision.

[0009] In one embodiment, the guide protrusion is provided outside the filter bottle body, the limiting member covers the outside of the guide protrusion, and the surface of the limiting member facing the guide protrusion is provided with a first limiting rib and a second limiting rib both arranged along the axial direction of the filter bottle body. The first limiting rib and the second limiting rib are arranged relative to each other at intervals to form the guide groove, and the guide protrusion can slide along the axial direction of the filter bottle body in the guide groove.

[0010] In one embodiment, the portion of the limiting member located between the first limiting rib and the second limiting rib is a spring buckle, a gap is provided between the portion of the limiting member where the first limiting rib is provided and the spring buckle, a gap is provided between the portion of the limiting member where the second limiting rib is provided and the spring buckle, a stop protrusion is provided on the inner side surface of the spring buckle, and the guide protrusion is limited to the side of the stop protrusion close to the first bottle mouth.

[0011] In one embodiment, a stop protrusion is provided on the side of the limiting member facing the filter bottle body, and the guide protrusion is limited to the side of the stop protrusion close to the first bottle mouth.

[0012] In one embodiment, an anti-drop protrusion is provided on the outside of the filter bottle body, and the anti-drop protrusion is located on the side of the anti-retreat protrusion away from the first bottle mouth. The anti-retreat protrusion can move between the anti-drop protrusion and the guide protrusion in the axial direction of the filter bottle body.

[0013] In one embodiment, the anti-drop protrusion surrounds the filter bottle body for at least one circle.

[0014] In one embodiment, when the protruding tooth is inserted into the tooth groove, the retreat-stopping protrusion is spaced apart from the guiding protrusion and the anti-drop protrusion.

[0015] In one embodiment, when the protruding tooth is inserted into the tooth groove, the distance between the retreat-stopping protrusion and the anti-falling protrusion is greater than the height of the protruding tooth.

[0016] In one embodiment, the limiting member is an annular structure, the limiting member is sleeved outside the filter bottle body, the limiting member can slide along the axial direction of the filter bottle body, there are multiple guide protrusions, and the multiple guide protrusions are arranged at intervals in the circumferential direction of the filter bottle body, there are multiple guide grooves, and the multiple guide grooves are arranged at intervals in the circumferential direction of the limiting member, and the guide protrusions correspond to the guide grooves one by one.

[0017] A detachable filter element assembly comprises a filter bottle cover and the filter bottle body unit described above, wherein the filter bottle cover can be screwed onto the first bottle opening of the filter bottle body to form a filter bottle for placing the filter element.

[0018] The above scheme provides a detachable filter element assembly. By adopting the filter bottle body unit described in any of the above embodiments, during the assembly process, the limit member can rotate a certain angle in the direction of screwing the filter bottle cover so that the convex teeth and the tooth grooves cooperate, thereby improving the convenience of assembly.

[0019] A water purifier comprises the above-mentioned detachable filter element assembly, wherein the filter element is installed in the filter bottle.

[0020] The above solution provides a water purifier, which improves the convenience of assembly by adopting the detachable filter element assembly described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] 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.

[0023] Figure 1 This is an exploded view of the detachable filter element assembly described in this embodiment;

[0024] Figure 2 This is a schematic diagram of the disassembly principle of the detachable filter element assembly described in this embodiment;

[0025] Figure 3 Schematic diagram of the structure of the limiting ring in this embodiment;

[0026] Figure 4 is a cross-sectional view of the detachable filter element assembly described in this embodiment;

[0027] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0028] Figure 6 for Figure 4 A cross-sectional view of the removable filter element assembly from another perspective;

[0029] Figure 7 This is a cross-sectional view of the assembled detachable filter element assembly and the entire housing of this embodiment;

[0030] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0031] Figure 9 Schematic diagram of the structure of the filter bottle cover of this embodiment;

[0032] Figure 10 for Figure 9 a cross-sectional view of the filter bottle cap shown;

[0033] Figure 11 Schematic diagram of the structure of the filter element of this embodiment;

[0034] Figure 12 This is a cross-sectional view of the filter bottle cover, end cover and limit ring assembled together;

[0035] Figure 13 for Figure 12 Cross-sectional view of the middle end cover.

[0036] Description of reference numerals:

[0037] 10. Removable filter element assembly; 11. Filter bottle body; 111. First bottle opening; 112. Second bottle opening; 113. Guide protrusion; 114. Anti-drop protrusion; 12. Filter bottle cover; 121. Mounting body; 122. Support member; 13. Limiting ring; 131. Limiting member; 132. Spring buckle; 133. Guide groove; 134. First limiting rib; 135. Second limiting rib; 136. Anti-retraction protrusion; 14. Protruding teeth; 15. Tooth groove group; 16. tooth groove; 17. end cover; 171. first sealing ring; 172. second sealing ring; 173. third end face; 174. fourth end face; 175. mounting hole; 176. limiting protrusion; 177. abutting protrusion; 18. connecting piece; 181. limiting end; 19. filter element; 191. inner tube; 192. flushing and draining hole; 193. handle; 20. filter element mounting seat; 30. whole machine housing; 31. locking protrusion. 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 Figure 1 、 Figure 2 and Figure 3 As shown, in one embodiment, a detachable filter element assembly 10 is provided, comprising a filter bottle body 11. A filter bottle cap 12 can be screwed onto a first opening 111 of the filter bottle body 11, thereby sealing the first opening 111. A second opening 112 of the filter bottle body 11 can be screwed onto a filter element mounting seat 20 of a water purifier, such that a filter element 19 in the filter bottle body 11 is in communication with corresponding water outlets on the filter element mounting seat 20.

[0040] Furthermore, if Figure 1 and Figure 2 As shown, in one embodiment, the detachable filter element assembly 10 further includes a filter bottle cap 12 , and the filter bottle cap 12 is screwed onto the first bottle opening 111 of the filter bottle body 11 to form a filter bottle for placing the filter element 19 .

[0041] When the filter cartridge 19 in the filter bottle needs to be replaced after a period of use, the filter bottle body 11 can be removed from the filter cartridge mounting seat 20 to separate the water flow path in the water purifier from the filter bottle body 11. Then, the filter bottle cap 12 is removed from the filter bottle body 11, the first bottle opening 111 is opened, and the filter cartridge 19 is taken out of the filter bottle for replacement. Since the filter bottle body 11 is separated from the filter cartridge mounting seat 20 when the filter bottle cap 12 is loosened, it can be ensured that the first bottle opening 111 will not leak during the disassembly process.

[0042] Furthermore, if Figure 2 As shown, when the filter bottle cover 12 rotates on the filter bottle body 11 in the same direction as the filter bottle body 11 is screwed onto the filter element mounting seat 20, during the process of screwing in the filter element 19 for replacement, the rotational force acting on the filter bottle may loosen the filter bottle cover 12 from the filter bottle body 11 before the filter bottle body 11 is removed from the filter element mounting seat 20, causing water leakage.

[0043] Based on this, in one embodiment, Figure 3As shown, a limiting member 131 is provided, which is used as an intermediate element between the filter bottle body 11 and the filter bottle cover 12 to avoid the situation where the filter bottle cover 12 is loosened from the filter bottle body 11 before the filter bottle body 11 is removed from the filter element mounting seat 20 during the disassembly process.

[0044] Specifically, if Figure 4 As shown, the limiting member 131 can move back and forth relative to the filter bottle in a direction away from or close to the first bottle opening 111. When the limiting member 131 moves forward to the locking position, as shown in FIG. Figure 4 and Figure 6 As shown, the filter bottle body 11 and the filter bottle cover 12 are both limitedly engaged with the limiting member 131, restricting the filter bottle cover 12 from loosening from the first bottle opening 111 and opening the first bottle opening 111. When the limiting member 131 moves out of the locked position, at least one of the filter bottle body 11 and the filter bottle cover 12 can move relative to the limiting member 131, so that the filter bottle cover 12 can be unscrewed from the filter bottle body 11.

[0045] When the filter bottle body 11 is assembled onto the filter element mounting seat 20, the limit member 131 is located in the locking position, and the filter bottle cover 12 is restricted and cannot be loosened from the first bottle opening 111 to open the first bottle opening 111. At this time, the rotational force acting on the filter bottle can only be transmitted to the matching position between the filter bottle body 11 and the filter element mounting seat 20, so that the filter bottle body 11 and the filter element mounting seat 20 can be rotated and disassembled.

[0046] Generally, after the detachable filter element assembly 10 is assembled on the water purifier, the end where the filter bottle cover 12 is located is exposed. For convenience during disassembly, force is generally applied directly to the filter bottle cover 12 to provide rotational force for the filter bottle. Therefore, it is even more necessary to provide the stopper 131 to prevent water leakage.

[0047] When the filter bottle body 11 is removed from the filter element mounting seat 20 , the limiting member 131 moves out of the locking position, and the filter bottle cover 12 can be rotated relative to the filter bottle body 11 and removed from the first bottle opening 111 .

[0048] In other words, only after the filter bottle body 11 is removed from the filter element mounting seat 20 can the filter bottle cover 12 be screwed relative to the filter bottle body 11, thereby effectively preventing water leakage. Moreover, since the limiting member 131 switches its state by moving on the filter bottle, and the movement direction is away from or close to the first bottle opening 111, during operation, when the detachable filter element assembly 10 is removed from the water purifier, the limit of the limiting member 131 in the movement direction can be released, and then the filter bottle cover 12 can be screwed and removed from the filter bottle body 11. The entire disassembly process is smooth and fast, and replacing the filter element 19 is more convenient.

[0049] Specifically, in one embodiment, Figure 7 and Figure 8 As shown, a locking protrusion 31 can be provided on the whole housing 30 of the water purifier, and the whole housing 30 is connected to the filter element mounting seat 20. When the detachable filter element assembly 10 and the filter element mounting seat 20 are assembled, the locking protrusion 31 will interfere with the limit member 131 and limit it to the locking position, thereby limiting the filter bottle cover 12 from loosening from the first bottle mouth 111 and opening the first bottle mouth 111.

[0050] Alternatively, in another embodiment, a snap-on locking member can be provided on the entire housing 30 of the water purifier. After the detachable filter element assembly 10 and the filter element mounting seat 20 are assembled, the limit member 131 can be manually pushed to the locking position. When the limit member 131 reaches the locking position, the snap-on locking member on the entire housing 30 snaps into engagement with the limit member 131 to prevent the limit member 131 from moving out of the locking position.

[0051] Specifically, the limiting member 131 can be slidably matched with the filter bottle body 11, or the limiting member 131 can be slidably matched with the filter bottle cover 12, so that the limiting member 131 can be moved to the locking position and can also be withdrawn from the locking position under certain circumstances.

[0052] For example, in one embodiment, Figure 4 As shown, the limiting member 131 is in sliding cooperation with the filter bottle body 11 , and the limiting member 131 can move back and forth relative to the filter bottle body 11 in a direction away from the first bottle opening 111 .

[0053] like Figure 4 As shown, the filter bottle body 11 is a cylindrical structure, and the limiting member 131 can move along the axial direction of the filter bottle body 11.

[0054] When the limiting member 131 moves to the locking position, the limiting cooperation relationship between the limiting member 131 and the filter bottle cover 12 can be achieved by concave-convex cooperation. Specifically, a convex tooth 14 can be provided on one of the limiting member 131 and the filter bottle cover 12, and a tooth groove 16 can be provided on the other. When the limiting member 131 moves forward to the locking position, the convex tooth 14 is inserted into the tooth groove 16, limiting the rotation of the filter bottle cover 12 relative to the limiting member 131 until the filter bottle cover 12 is loosened and opens the first bottle mouth 111. When the limiting member 131 moves out of the locking position, the convex tooth 14 exits the tooth groove 16, and the filter bottle cover 12 can rotate relative to the limiting member 131, thereby being able to unscrew the filter bottle cover 12 from the filter bottle body 11.

[0055] Furthermore, the freedom of rotation of the stopper 131 relative to the filter bottle body 11 in the circumferential direction of the filter bottle body 11 is restricted, so that when the filter bottle cover 12 cannot rotate relative to the stopper 131, the filter bottle cover 12 cannot rotate relative to the filter bottle body 11. The "cannot rotate" mentioned here means that the filter bottle cover 12 cannot rotate to loosen and open the first bottle opening 111. However, if the filter bottle cover 12 does not loosen from the first bottle opening 111 when the filter bottle cover 12 is rotated by a small angle, then such small angle rotation is allowed.

[0056] Furthermore, in one embodiment, a filter bottle unit is provided, wherein the filter bottle unit includes a stopper 131 and a filter bottle body 11. Figure 3 and Figure 4 As shown, one of the limiting member 131 and the filter bottle body 11 is provided with a guide protrusion 113, and the other is provided with a guide groove 133. The guide protrusion 113 is located in the guide groove 133, and a clearance is formed between the side wall of the guide groove 133 and the guide protrusion 113 in the screwing direction of the filter bottle cover 12.

[0057] The above scheme provides a filter bottle body unit, in which the limiting member 131 and the filter bottle body 11 cooperate with each other through the guide protrusion 113 and the guide groove 133, so that the rotation of the limiting member 131 relative to the filter bottle body 11 in the screwing direction of the filter bottle cover 12 is restricted, so that when the filter bottle cover 12 and the limiting member 131 cooperate with each other through the protruding teeth 14 and the tooth grooves 16, the filter bottle cover 12 cannot be unscrewed from the first bottle mouth 111 of the filter bottle body 11 to loosen and open the first bottle mouth 111, thereby preventing water leakage. When the filter bottle cover 12 is screwed onto the filter bottle body 11, in order to facilitate the cooperation between the convex teeth 14 and the tooth groove 16, the gap between the side wall of the guide groove 133 and the guide protrusion 113 is matched, so that the limit member 131 can be rotated by a certain small angle in the direction of screwing the filter bottle cover 12, so that the convex teeth 14 and the tooth groove 16 can cooperate together, thereby improving the convenience of assembly and reducing the requirements for manufacturing accuracy.

[0058] Furthermore, in one embodiment, Figure 1 、 Figure 2 and Figure 4 As shown, the filter bottle body 11 is provided with the guide protrusion 113. The guide protrusion 113 can serve as a basis for the sliding fit of the limiter 131 relative to the filter bottle body 11, and can also serve as a limiting basis to prevent the limiter 131 from falling off the filter bottle body 11.

[0059] For example, in one embodiment, Figure 4 、 Figure 6 and Figure 7 As shown, the limiting member 131 covers the outside of the guide protrusion 113. Figure 3 As shown, the surface of the limiting member 131 facing the guide protrusion 113 is provided with a first limiting rib 134 and a second limiting rib 135, both arranged axially along the filter bottle body 11. The first limiting rib 134 and the second limiting rib 135 are spaced apart from each other to form the guide groove 133. The guide protrusion 113 can slide axially along the filter bottle body 11 in the guide groove 133. Under the guidance of the guide groove 133, the limiting member 131 can slide axially along the filter bottle body 11 on the filter bottle body 11 to the locked position, and can also slide out of the locked position, switching between the two states.

[0060] The first limiting rib 134 and the second limiting rib 135 constitute the two side walls of the guide groove 133. In one embodiment, when the limiting member 131 moves to the locking position and the protruding tooth 14 is located in the tooth groove 16, a clearance fit is formed between the guide protrusion 113 and the first limiting rib 134 and / or the second limiting rib 135. This allows the limiting member 131 to rotate a small angle relative to the filter bottle body 11 in the direction in which the filter bottle cover 12 is screwed, so that the protruding tooth 14 and the tooth groove 16 can fit together, thereby improving assembly convenience and reducing the requirements for manufacturing precision.

[0061] Furthermore, in one embodiment, Figure 3 As shown, a stop protrusion 136 is provided on the side of the limiting member 131 facing the filter bottle body 11. Figure 4 As shown, the guide protrusion 113 is limited to the side of the stop protrusion 136 close to the first bottle opening 111, thereby preventing the limiting member 131 from sliding off from the end where the first bottle opening 111 is located.

[0062] Furthermore, in one embodiment, in order to prevent the limiting member 131 from sliding off from the other end of the filter bottle body 11, Figure 1 、 Figure 2 and Figure 4 As shown, an anti-drop protrusion 114 is provided on the side of the filter bottle body 11 facing the limiting member 131 , and the anti-drop protrusion 114 is limited to the side of the stop protrusion 136 away from the first bottle mouth 111 .

[0063] Furthermore, in one embodiment, Figure 4 As shown, the anti-retraction protrusion 136 is movable between the anti-drop protrusion 114 and the guide protrusion 113 in the axial direction of the filter bottle body 11. In other words, although the anti-drop protrusion 114 and the guide protrusion 113 are respectively positioned on either side of the anti-retraction protrusion 136, the distance between the anti-drop protrusion 114 and the guide protrusion 113 is greater than the thickness of the anti-retraction protrusion 136, allowing the anti-retraction protrusion 136 to move between the anti-drop protrusion 114 and the guide protrusion 113.

[0064] More specifically, in one embodiment, Figure 1 and Figure 2As shown, the anti-drop protrusion 114 extends at least one full circle around the circumference of the filter bottle body 11. This improves the reliability of the anti-drop feature, as the anti-drop protrusion 114 can consistently retain the stop protrusions 136 regardless of their circumferential distribution. Furthermore, when the anti-drop protrusion 114 is sufficiently thick in the radial direction of the filter bottle body 11, it can directly block the end surface of the stopper 131, preventing the stopper 131 from falling off the end of the filter bottle body 11 away from the first bottle opening 111.

[0065] Furthermore, in one embodiment, Figure 4 As shown, when the protruding tooth 14 is inserted into the tooth groove 16, the stop protrusion 136 is spaced apart from the guide protrusion 113 and the anti-drop protrusion 114. It is ensured that the arrangement of the guide protrusion 113 and the anti-drop protrusion 114 does not restrict the insertion of the protruding tooth 14 into the tooth groove 16.

[0066] Furthermore, in one embodiment, Figure 4 As shown, when the protruding tooth 14 is inserted into the tooth groove 16, the distance between the stop protrusion 136 and the anti-drop protrusion 114 is greater than the height of the protruding tooth 14, so as to ensure that the limiting member 131 can move away from the first bottle mouth 111 until the protruding tooth 14 exits the tooth groove 16.

[0067] Specifically, in one embodiment, when the protruding tooth 14 is inserted into the tooth groove 16 , the difference between the distance between the stopping protrusion 136 and the anti-drop protrusion 114 and the height of the protruding tooth 14 is not less than 1 mm.

[0068] Furthermore, in one embodiment, the protruding teeth 14 may be provided on the limiting member 131 , and the tooth grooves 16 may be located on the filter bottle cover 12 ; or the protruding teeth 14 may be located on the filter bottle cover 12 , and the tooth grooves 16 may be located on the limiting member 131 .

[0069] Specifically, if Figure 3 As shown, in one embodiment, the protruding teeth 14 can be located on the limiting member 131 near the filter bottle cover 12. The tooth grooves 16 are formed on the filter bottle cover 12 at a position facing the protruding teeth 14. Alternatively, in another embodiment, the protruding teeth 14 are located on the filter bottle cover 12 near the limiting member 131, and the tooth grooves 16 are formed on the limiting member 131 at a position facing the protruding teeth 14.

[0070] Furthermore, in one embodiment, a filter element locking unit is provided, comprising the filter bottle body 11, the filter bottle cover 12 and the limiting member 131. Figure 9 and Figure 10As shown, there are at least two tooth grooves 16 , and a plurality of tooth grooves 16 are sequentially arranged in the circumferential direction of the filter bottle to form a tooth groove group 15 , and the protruding teeth 14 are correspondingly matched with the tooth groove group 15 .

[0071] Therefore, during the assembly process, as long as the protruding tooth 14 is inserted into one of the tooth grooves 16, the filter bottle cover 12 can be restricted from loosening and opening from the first bottle mouth 111, thereby avoiding water leakage, allowing a certain assembly error, reducing the requirements for manufacturing accuracy, and improving the convenience of assembly.

[0072] In particular, when there are multiple protruding teeth 14 and multiple tooth groove groups 15, and the protruding teeth 14 correspond to the tooth groove groups 15 one by one, the tooth groove group 15 is set to include multiple tooth grooves 16 connected in sequence in the circumferential direction of the filter bottle, which can ensure that each protruding tooth 14 can be inserted into the tooth groove 16 of the corresponding tooth groove group 15.

[0073] Furthermore, in one embodiment, Figure 3 As shown, the protruding teeth 14 are located on the end surface of the limiting member 131 close to the first bottle opening 111. Figure 9 and Figure 10 As shown, the tooth groove 16 is located on the end surface of the filter bottle cover 12 facing the protruding tooth 14. In other words, the tooth groove group 15 can be formed on the end surface of the filter bottle cover 12 facing the stopper 131. When the filter bottle cover 12 is screwed onto the filter bottle body 11 and the stopper 131 is moved to the locked position, the end surface of the stopper 131 with the protruding tooth 14 faces the end surface of the filter bottle cover 12, and the protruding tooth 14 is located in the tooth groove 16.

[0074] Optionally, the protruding teeth 14 and the tooth grooves 16 may also be arranged at other positions, as long as when the filter bottle cover 12 is screwed onto the filter bottle body 11 and the limiting member 131 moves to the locking position, the protruding teeth 14 can be inserted into the tooth grooves 16.

[0075] Furthermore, in one embodiment, Figures 1 to 4 As shown, the limiting member 131 is an annular structure. The limiting member 131 is sleeved outside the filter bottle body 11 and can slide along the axial direction of the filter bottle body 11. Therefore, the limiting member 131 can be reliably assembled on the filter bottle body 11.

[0076] Furthermore, if Figure 3 As shown, there are multiple protruding teeth 14, and the multiple protruding teeth 14 are arranged at intervals in the circumferential direction of the limiting member 131. Figure 9As shown, there are multiple tooth grooves 16, and each convex tooth 14 corresponds to multiple tooth grooves 16. The multiple tooth grooves 16 corresponding to the same convex tooth 14 are connected in sequence to form the tooth groove group 15. There are multiple tooth groove groups 15, and the multiple tooth groove groups 15 are arranged at intervals in the circumferential direction of the filter bottle cover 12.

[0077] When the limiting member 131 and the filter bottle cover 12 are limitedly engaged together, the protruding teeth 14 and the tooth groove groups 15 can correspond one to one, thereby increasing the resistance of the filter bottle cover 12 to rotation relative to the limiting member 131 .

[0078] Furthermore, since each protruding tooth 14 corresponds to a tooth groove group 15 that includes at least two tooth grooves 16, during assembly, each protruding tooth 14 only needs to be inserted into one of the tooth grooves 16 in its tooth groove group 15. A certain degree of assembly tolerance is allowed to ensure that all protruding teeth 14 can be inserted into each tooth groove group 15 simultaneously, thereby reducing the requirements for manufacturing precision and improving assembly convenience.

[0079] Furthermore, in one embodiment, Figure 3 As shown, the protruding tooth 14 is an isosceles triangle protruding structure, and the vertex angle of the protruding tooth 14 is 55° to 65°.

[0080] The top angle of the convex tooth 14 can play a guiding role in the insertion process of the convex tooth 14. Moreover, the top angle is between 55° and 65°, which not only ensures a good guiding effect during assembly, but also makes the disassembly feel better. Specifically, when the top angle is less than 55°, the tooth pitch is too small, which is not convenient for alignment, and the guiding effect of the convex tooth 14 inserted into the tooth groove 16 is poor; when the top angle is greater than 65°, when the detachable filter element assembly 10 is disassembled from the entire housing 30 of the water purifier, the rotational force will be decomposed into an outward force in the disassembly direction of the detachable filter element assembly 10 through the matching inclined surface of the convex tooth 14 and the tooth groove 16, increasing the friction between the filter bottle body 11 and the filter element mounting seat 20 screw, increasing the disassembly torque, and affecting the disassembly feel.

[0081] Furthermore, in one embodiment, when the protruding teeth 14 are located in the tooth grooves 16, the force applied to twist the filter bottle to elastically deform the protruding teeth 14 and disengage them from the tooth grooves 16 is F1, and the force applied to loosen the filter bottle body 11 from the filter cartridge mounting seat 20 is F2, where F1 is greater than F2. This ensures that during disassembly, the force acting on the filter bottle first removes the filter bottle body 11 from the filter cartridge mounting seat 20, rather than unscrewing the protruding teeth 14 out of the tooth grooves 16.

[0082] Based on this, in order to ensure the cooperation between the protruding teeth 14 and the tooth grooves 16 and to provide sufficient resistance, in one embodiment, the height of the protruding teeth 14 is set to 3 mm to 5 mm.

[0083] Furthermore, when the limiting member 131 moves to the locked position and the protruding tooth 14 is located in the tooth groove 16, the clearance between the guiding protrusion 113 and the first limiting rib 134 and / or the second limiting rib 135 cooperates, facilitating smooth insertion of the protruding tooth 14 into the corresponding tooth groove group 15 during assembly. However, the clearance between the guiding protrusion 113 and the first limiting rib 134 and / or the second limiting rib 135 cannot be too large, otherwise the first limiting rib 134 and the second limiting rib 135 will lose their limiting and guiding function, and the protruding tooth 14 will be disengaged from the corresponding tooth groove group 15.

[0084] Therefore, in one embodiment, the width of the gap between the guide protrusion 113 and the first limiting rib 134 is less than the circumferential distance required for the protruding tooth 14 to move out of the corresponding tooth groove group 15. In other words, although the limiting member 131 can rotate slightly in the circumferential direction of the filter bottle body 11, its rotation angle is limited, ensuring that the protruding tooth 14 always aligns with the corresponding tooth groove group 15 without deviation, and ensuring that the limiting member 131 does not lose its function of limiting the filter bottle cover 12.

[0085] Furthermore, in one embodiment, a tooth slot group 15 includes 2n+1 tooth slots 16, where n is an integer. That is, the number of tooth slots 16 included in a tooth slot group 15 is an odd number. The tooth pitch of the tooth slot group 15 is h. When the protruding tooth 14 is located in the centermost tooth slot 16 in the tooth slot group 15, there is a clearance fit between the guide protrusion 113 and the first and second limiting ribs 134, 135, and the gap widths between the guide protrusion 113 and the first and second limiting ribs 134, 135 are both d, and 0.5h<d≤(n+0.5)h.

[0086] Under the limiting action of the first limiting rib 134 and the second limiting rib 135 , even if the guide protrusion 113 swings between the two, the width of the gap ensures that the protruding tooth 14 is always opposite to the tooth groove group 15 without deviation.

[0087] For example, specifically, in one embodiment, Figure 9 and Figure 10 As shown, the tooth groove group 15 includes three tooth grooves 16. When the protruding tooth 14 is located in the middle tooth groove 16 in the tooth groove group 15, the guide protrusion 113 and the first limiting rib 134 and the second limiting rib 135 are clearance-fitted, and the gap widths between the guide protrusion 113 and the first limiting rib 134 and the second limiting rib 135 are both d, 0.5h<d≤1.5h.

[0088] Furthermore, in one embodiment, Figure 3As shown, the limiting member 131 is an annular structure. There are multiple guide protrusions 113, and the multiple guide protrusions 113 are arranged at intervals along the circumference of the filter bottle body 11. There are multiple guide grooves 133, and the multiple guide grooves 133 are arranged at intervals along the circumference of the limiting member 131, and the guide protrusions 113 correspond to the guide grooves 133 one by one. In other words, assuming that the first limiting rib 134, the second limiting rib 135, and the spring catch 132 constitute a limiting group, then there are multiple limiting groups, and the multiple limiting groups are arranged at intervals along the circumference of the limiting member 131.

[0089] Furthermore, in one embodiment, Figure 3 As shown, the protruding tooth 14 is located between the first limiting rib 134 and the second limiting rib 135 .

[0090] Here, the protruding teeth 14 being located between the first limiting rib 134 and the second limiting rib 135 means that the protruding teeth 14 are located between the extension line of the first limiting rib 134 and the extension line of the second limiting rib 135. In other words, the protruding teeth 14 are not limited to being located between the first limiting rib 134 and the second limiting rib 135. When the protruding teeth 14 are located on the end surface of the limiting member 131, the protruding teeth 14 are located between the extension line of the first limiting rib 134 and the extension line of the second limiting rib 135.

[0091] In addition, when the protruding tooth 14 is provided on the filter bottle cover 12 , when the protruding tooth 14 is inserted into the tooth groove 16 , the protruding tooth 14 is also located between the first limiting rib 134 and the second limiting rib 135 .

[0092] Furthermore, in one embodiment, Figure 3 As shown, the portion of the limiting member 131 between the first limiting rib 134 and the second limiting rib 135 is a spring buckle 132. The stop protrusion 136 is located on the inner side of the spring buckle 132, and the spring buckle 132 can be squeezed outward to cause elastic deformation.

[0093] During assembly, the stopper 131 moves axially along the filter bottle body 11, causing the retaining protrusion 136 to move from the side of the guide protrusion 113 closer to the first bottle opening 111 to the other side. During this process, the spring catch 132 elastically deforms to allow the retaining protrusion 136 to pass over the guide protrusion 113. When the retaining protrusion 136 reaches the side of the guide protrusion 113 farther from the first bottle opening 111, the spring catch 132 returns to its original position, causing the retaining protrusion 136 to be retained by the guide protrusion 113 on the side farther from the first bottle opening 111, thereby preventing the stopper 131 from falling off the first bottle opening 111.

[0094] Especially when the limiting member 131 is an annular structure, as long as the limiting member 131 can be prevented from sliding off from both ends of the filter bottle body 11, the limiting member 131 will not fall off the filter bottle body 11, effectively avoiding the loss of the limiting member 131.

[0095] In one embodiment, Figure 3 As shown, a limiting ring 13 is provided, including the limiting member 131, the limiting member 131 is a ring structure, the inner side surface of the limiting member 131 is provided with a first limiting rib 134 and a second limiting rib 135 both arranged axially along the limiting member 131, the portion of the limiting member 131 located between the first limiting rib 134 and the second limiting rib 135 is a spring buckle 132, the inner side surface of the spring buckle 132 is provided with a stop protrusion 136, and the spring buckle 132 can be squeezed outward to undergo elastic deformation.

[0096] During assembly, the limiting ring 13 can be placed over the filter bottle body 11. Due to the elastic deformation capability of the spring catch 132, the limiting ring 13 can be pushed axially along the filter bottle body 11 so that the stop protrusion 136 is located on the side of the guide protrusion 113 away from the first bottle opening 111. Simultaneously, the guide protrusion 113 is located between the first limiting rib 134 and the second limiting rib 135, thereby limiting the circumferential rotation of the limiting ring 13 relative to the filter bottle body 11. Multiple azimuth restrictions can be achieved in a single alignment and assembly process, thereby improving assembly convenience.

[0097] Furthermore, in one embodiment, Figure 3 As shown, a gap is formed between the portion of the limiting member 131 where the first limiting rib 134 is provided and the spring catch 132, and a gap is formed between the portion of the limiting member 131 where the second limiting rib 135 is provided and the spring catch 132. Only one side of the spring catch 132 is connected to the limiting member 131, so that the spring catch 132 has a certain elastic deformation capability.

[0098] Specifically, in one embodiment, Figure 3 As shown, the notch extends through the first end surface of the retaining member 131. The retaining protrusion 136 is located on the spring clip 132 near the first end surface. The end of the spring clip 132 that connects to the retaining member 131 is the fixed end, and the end of the spring clip 132 away from the fixed end is the free end. The retaining protrusion 136 is located at the free end of the spring clip 132. During assembly, the spring clip 132 elastically deforms, causing the retaining protrusion 136 to pass over the guide protrusion 113 and be retained by the guide protrusion 113 on the side away from the first bottle mouth 111.

[0099] Furthermore, in one embodiment, Figure 3 and Figure 4 As shown, the protruding teeth 14 or tooth grooves 16 are located on the second end surface of the stopper 131. When the stopper 131 is assembled on the filter bottle body 11, its first end surface faces the end of the filter bottle body 11 away from the first bottle opening 111, and its second end surface faces the filter bottle cap 12. When the filter bottle cap 12 is screwed onto the filter bottle body 11, the protruding teeth 14 fit neatly into the tooth grooves 16.

[0100] when Figure 3 The limiting ring 13 is assembled to Figure 4 When the filter element assembly 10 is removable at the filter bottle body 11 at the angle shown, the first end surface faces downward and the second end surface faces upward.

[0101] Furthermore, in one embodiment, Figure 3 As shown, the retaining member 131 is an annular structure. The second end surface of the retaining member 131 is provided with a protruding tooth 14 or a tooth groove 16. The protruding tooth 14 or tooth groove 16 is positioned between the first limiting rib 134 and the second limiting rib 135. The retaining protrusion 136 is located on the spring catch 132 near the first end surface. During assembly, the guide protrusion 113 is retained between the first limiting rib 134 and the second limiting rib 135. After the retaining protrusion 136 passes over the guide protrusion 113, the position of the protruding tooth 14 (tooth groove 16) on the retaining member 131 precisely corresponds to the tooth groove 16 (protruding tooth 14) on the filter bottle cover 12. Placing the protruding tooth 14 or tooth groove 16 adjacent to the spring catch 132, the first limiting rib 134, and the second limiting rib 135 effectively improves assembly accuracy.

[0102] Furthermore, in another embodiment, the stopper 131 is slidably engaged with the filter bottle cover 12, and the sliding direction is the axial direction of the filter bottle cover 12. In other words, the stopper 131 is provided on the filter bottle cover 12, and the stopper 131 is initially assembled onto the filter bottle body 11 along with the filter bottle cover 12. The stopper 131 is then moved relative to the filter bottle cover 12 to move the stopper 131 to the locking position. When the stopper 131 reaches the locking position, the stopper 131 and the filter bottle body 11 are locked, preventing the filter bottle body 11 from rotating relative to the stopper 131, thereby preventing the filter bottle cover 12 from being loosened from the first bottle opening 111.

[0103] Specifically, in one embodiment, one of the limiting member 131 and the filter bottle body 11 is provided with a protruding tooth 14, and the other is provided with a tooth groove 16. When the limiting member 131 moves forward to the locking position, the protruding tooth 14 is inserted into the tooth groove 16, thereby restricting the filter bottle body 11 from rotating relative to the limiting member 131. When the limiting member 131 moves out of the locking position, the protruding tooth 14 is removed from the tooth groove 16, allowing the filter bottle cover 12 and the limiting member 131 to be removed from the filter bottle body 11 together, thereby allowing the filter element 19 in the filter bottle body 11 to be removed and replaced.

[0104] More specifically, in one embodiment, the limiting member 131 is located on the outer side of the filter bottle cover 12 , the protruding teeth 14 are located on the outer side of the filter bottle body 11 , and the tooth groove 16 is provided on the limiting member 131 facing the protruding teeth 14 .

[0105] Specifically, in one embodiment, the tooth tip of the convex tooth 14 on the filter bottle body 11 can face outward along the radial direction of the filter bottle body 11, the limiting member 131 is an annular structure, and the tooth groove 16 is located on the inner side of the limiting member 131. When the limiting member 131 moves to the locking position, the portion of the limiting member 131 where the tooth groove 16 is provided is inserted outside the portion of the filter bottle body 11 where the convex tooth 14 is provided, and the convex tooth 14 is located in the tooth groove 16.

[0106] When the convex tooth 14 is an isosceles triangle convex structure, the top angle of the convex tooth 14 is the tooth tip of the convex tooth 14. Figure 3 In the embodiment of the limiting ring 13 shown, when the limiting ring 13 is assembled on the filter bottle body 11 , the tooth tips of the protruding teeth 14 are axially directed toward the filter bottle cover 12 along the filter bottle body 11 .

[0107] Optionally, the protruding teeth 14 may also be located on the limiting member 131 , and the tooth grooves 16 may be located on the filter bottle body 11 .

[0108] Furthermore, in one embodiment, the limiting member 131 is an annular structure, and the limiting member 131 is sleeved outside the filter bottle cover 12, and the limiting member 131 can slide along the axial direction of the filter bottle cover 12. There are multiple protruding teeth 14, and the multiple protruding teeth 14 are arranged at intervals along the circumference of the filter bottle body 11. There are multiple tooth grooves 16, and each protruding tooth 14 corresponds to multiple tooth grooves 16. The tooth grooves 16 corresponding to the same protruding tooth 14 are sequentially connected to form a tooth groove group 15. The multiple tooth groove groups 15 are arranged at intervals along the circumference of the limiting member 131.

[0109] Similar to the solution of sliding the limit ring 13 on the filter bottle body 11, the above-mentioned limit member 131 is sleeved on the outside of the filter bottle cover 12. The setting of the tooth groove group 15 can reduce the requirements for the alignment accuracy between the limit member 131 and the filter bottle body 11 during the assembly process. It is sufficient as long as the protruding tooth 14 is inserted into a tooth groove 16 in the corresponding tooth groove group 15.

[0110] Furthermore, in one embodiment, Figure 4 As shown, the detachable filter element assembly 10 further includes an end cap 17, which is connected to the filter bottle cover 12 and is located in the space enclosed by the filter bottle cover 12. When the filter bottle cover 12 is assembled to the first bottle opening 111 of the filter bottle body 11, the end cap 17 moves along with the filter bottle cover 12, is inserted into the filter bottle body 11, and blocks the first bottle opening 111.

[0111] During the disassembly process, when the limit between the limit ring 13 and the filter bottle cover 12 is released, the filter bottle cover 12 is screwed off from the filter bottle body 11, and the end cover 17 moves together with the filter bottle cover 12, so that the end cover 17 is pulled out from the filter bottle body 11, and then the filter element 19 in the filter bottle body 11 is replaced.

[0112] Furthermore, if Figure 4 As shown, a first sealing ring 171 is provided between the end cap 17 and the inner wall of the first bottle opening 111 of the filter bottle body 11 to ensure that the first bottle opening 111 can be reliably sealed after the end cap 17 is inserted into the filter bottle body 11 .

[0113] Furthermore, when the filter bottle cover 12 rotates relative to the filter bottle body 11, in order to prevent the end cap 17 from rotating relative to the filter bottle body 11, the screwing process will be subject to greater resistance and the disassembly will be inconvenient. Figure 4 、 Figure 5 、 Figure 12 and Figure 13 As shown, the detachable filter element assembly 10 also includes a connecting piece 18, and the end cap 17 is movably connected to the bottom wall of the filter bottle cover 12 through the connecting piece 18, so that the filter bottle cover 12 will not drive the end cap 17 to rotate when it rotates. When the filter bottle cover 12 is assembled on the filter bottle body 11, the bottom wall of the filter bottle cover 12 can squeeze the end cap 17 so that the end cap 17 is inserted into the filter bottle body 11; when the filter bottle cover 12 is removed from the filter bottle body 11, the filter bottle cover 12 can pull the end cap 17 out of the filter bottle through the connecting piece 18.

[0114] Specifically, if Figure 4 、 Figure 5 and Figure 12As shown, in one embodiment, a mounting body 121 is provided on the inner side of the bottom wall of the filter bottle cover 12. Figure 12 and Figure 13 As shown, the surface of the end cap 17 facing the bottom wall of the filter bottle cover 12 is the third end surface 173, and the end surface of the end cap 17 facing the inside of the filter bottle body 11 is the fourth end surface 174. Figure 13 As shown, the end cover 17 is provided with a mounting hole 175, and the mounting hole 175 passes through the third end surface 173 and the fourth end surface 174 of the end cover 17. The mounting body 121 is inserted into the mounting hole 175, and the end cover 17 can rotate relative to the mounting body 121. Figure 4 and Figure 5 As shown, one end of the connector 18 is connected to the mounting body 121, and the other end of the connector 18 is limitedly engaged with the end cap 17 to limit the movement of the end cap 17 relative to the connector 18 in the axial direction of the filter bottle cover 12. Therefore, when the filter bottle cover 12 rotates relative to the filter bottle body 11, the end cap 17 will not rotate with the filter bottle cover 12, but will move with the filter bottle cover 12 in the axial direction of the filter bottle cover 12.

[0115] Specifically, if Figure 5 As shown, the connecting member 18 is a screw, which is arranged in the mounting body 121. The nut of the screw is limitedly engaged with the end cover 17 to limit the axial movement of the end cover 17 relative to the connecting member 18 in the filter bottle cover 12, but the nut is spaced apart from the side wall of the mounting hole 175, so that the end cover 17 will not rotate with the filter bottle cover 12.

[0116] More specifically, Figure 12 As shown, the side wall of the end cap 17 is spaced apart from the side wall of the filter bottle cover 12 , so that when the end cap 17 is inserted into the filter bottle body 11 , the side wall of the filter bottle cover 12 is sleeved outside the filter bottle body 11 .

[0117] Furthermore, if Figure 5 and Figure 12 As shown, in one embodiment, one end of the connecting member 18 used for limiting cooperation with the end cover 17 is a limiting end 181, and the inner wall of the mounting hole 175 is provided with a limiting protrusion 176, and the limiting protrusion 176 is limited to the side of the limiting end 181 close to the third end face 173, thereby limiting the axial movement of the end cover 17 relative to the connecting member 18 in the filter bottle cover 12.

[0118] When the connecting member 18 is a screw, the limiting end 181 is a nut of the screw, and the nut of the screw is located on the side of the limiting protrusion 176 away from the third end surface 173 .

[0119] Specifically, if Figure 5 As shown, there are multiple limiting protrusions 176 , and the multiple limiting protrusions 176 are arranged at intervals in the circumferential direction of the mounting hole 175 . Alternatively, the limiting protrusions 176 are annular protrusions arranged along the circumference of the mounting hole 175 .

[0120] The aperture of the space enclosed by the limiting protrusion 176 is smaller than the outer diameter of the limiting end 181 , thereby limiting the limiting end 181 to a side of the limiting protrusion 176 away from the third end surface 173 .

[0121] Furthermore, if Figure 13 As shown, an abutting protrusion 177 is provided on the end surface of the limiting protrusion 176 close to the limiting end 181, and the abutting protrusion 177 abuts against the limiting end 181 to reduce the friction between the connecting member 18 and the end cover 17 when the filter bottle cover 12 rotates.

[0122] Specifically, if Figure 13 As shown, there are multiple abutment protrusions 177 , and the multiple abutment protrusions 177 are arranged at intervals in the circumferential direction of the mounting hole 175 .

[0123] Furthermore, in one embodiment, a gasket (not shown in the figure) is provided between the limiting end 181 and the limiting protrusion 176 to further reduce the friction force indirectly applied by the end cover 17 on the filter bottle cover 12 when the filter bottle cover 12 is rotated.

[0124] Furthermore, if Figure 5 As shown, a second sealing ring 172 is provided between the mounting body 121 and the side wall of the mounting hole 175 to prevent the liquid in the filter bottle body 11 from leaking from the gap between the mounting body 121 and the mounting hole 175 .

[0125] Furthermore, if Figure 5 As shown, the second sealing ring 172 is located on the side of the limiting protrusion 176 close to the third end face 173, so that the limiting protrusion 176 can effectively prevent the second sealing ring 172 from falling off from the end of the mounting body 121 away from the bottom wall of the filter bottle cover 12.

[0126] Furthermore, in order to improve the stability of the second sealing ring 172 in the upper limit position of the mounting body 121, as shown in FIG. Figure 5 and Figure 10As shown, the mounting body 121 can be divided into a first section and a second section in the axial direction of the filter bottle cover 12. The first section is connected between the second section and the bottom wall of the filter bottle cover 12. The outer diameter of the first section is larger than the outer diameter of the second section, forming a step on the outer side of the mounting body 121. The second sealing ring 172 is sleeved outside the second section, and the first section is limited to the side of the second sealing ring 172 close to the third end surface 173.

[0127] Therefore, in combination with the limiting protrusion 176 and the first section, the position of the second sealing ring 172 on the mounting body 121 is limited, thereby ensuring the sealing effectiveness of the second sealing ring 172 .

[0128] Furthermore, if Figure 10 and Figure 12 As shown, a support member 122 is provided on the inner side of the bottom wall of the filter bottle cover 12. The support member 122 is located between the mounting body 121 and the side wall of the filter bottle cover 12. The support member 122 abuts against the end cap 17 to prevent the end cap 17 from being deformed and broken under pressure. Specifically, the support member 122 can be a support rib.

[0129] Furthermore, in another embodiment, a water purifier is provided, comprising the filter element locking unit described in any of the above embodiments. By employing the filter element locking unit described in any of the above embodiments, during assembly after replacing the filter element 19, the filter bottle cover 12 need only be screwed until the protruding teeth 14 are inserted into one of the tooth grooves 16. This allows for a certain degree of assembly error, reduces the requirements for manufacturing precision, and improves assembly convenience.

[0130] Furthermore, in another embodiment, a water purifier is provided, comprising the filter bottle unit described in any of the above embodiments. Due to the gap between the guide protrusion 113 and the sidewall of the guide groove 133, the stopper 131 can rotate within a certain angle relative to the filter bottle body 11, facilitating the engagement of the protruding teeth 14 with the tooth grooves 16, thereby improving assembly convenience and reducing the requirements for manufacturing precision.

[0131] Furthermore, in one embodiment, a water purifier is provided, comprising the detachable filter element assembly 10 described in any of the above embodiments.

[0132] By adopting the detachable filter element assembly 10 described in any of the above embodiments, water leakage when the filter element 19 is removed and replaced can be avoided while improving the convenience of replacing the filter element 19.

[0133] Furthermore, in one embodiment, Figure 2As shown, the water purifier also includes a filter element mounting seat 20, and the filter bottle body 11 is screwed on the filter element mounting seat 20. The direction of the screwing of the filter bottle body 11 is consistent with the rotation direction of the filter bottle cover 12 screwed onto the filter bottle body 11, and the second bottle mouth 112 of the filter bottle body 11 is connected to the filter element mounting seat 20.

[0134] The bottle openings at both ends of the filter bottle body 11 are respectively a first bottle opening 111 and a second bottle opening 112. The filter element 19 in the filter bottle is connected to the various water outlets on the filter element mounting seat 20 through the second bottle opening 112. The filter bottle cover 12 is detachably assembled at the first bottle opening 111 of the filter bottle body 11. Since the direction of the screw buckle of the filter bottle body 11 is consistent with the rotation direction of the filter bottle cover 12 screwed onto the filter bottle body 11, in order to avoid the situation where the filter bottle body 11 and the filter element mounting seat 20 are not separated during the disassembly process, the filter bottle cover 12 is loosened first. The limiter 131 is further provided and used as an intermediate element to prevent the filter bottle cover 12 from loosening first and leaking water, and to enable the filter bottle cover 12 to be removed smoothly after the filter bottle body 11 and the filter element mounting seat 20 are separated.

[0135] Furthermore, in one embodiment, Figure 7 and Figure 8 As shown, the water purifier also includes a complete machine housing 30, the filter element mounting seat 20 is connected to the complete machine housing 30, and a locking protrusion 31 is provided on the complete machine housing 30. When the detachable filter element assembly 10 and the filter element mounting seat 20 are assembled, the locking protrusion 31 will interfere with the limit member 131 and limit it to the locking position.

[0136] When the limiting member 131 is slidably engaged on the filter bottle body 11, after the filter bottle body 11 and the filter element mounting seat 20 are assembled, the relative position between the filter bottle body 11 and the locking protrusion 31 is fixed, and the locking protrusion 31 abuts against the limiting member 131 and limits it to the locking position.

[0137] During the disassembly process, when the filter bottle body 11 is not removed from the filter element mounting seat 20, the locking protrusion 31 always limits the limiting member 131 to the locking position. As the filter bottle body 11 is gradually pulled out of the entire machine housing 30, the limiting member 131 gradually disengages from the locking protrusion 31. At this time, the limiting member 131 can be pushed away from the first bottle mouth 111, so that the limiting member 131 exits the locking position and the protruding tooth 14 exits the tooth groove 16.

[0138] Furthermore, in one embodiment, a filter element 19 is installed in the filter bottle, such as Figure 11As shown, the filter element 19 includes a core body and an inner cylinder 191, wherein the core body is disposed in the inner cylinder 191. The inner cylinder 191 is spaced apart from the filter bottle, and a handle 193 is provided on the inner cylinder 191 near the first bottle opening 111.

[0139] After the filter bottle cover 12 is removed from the filter bottle body 11, the filter element 19 is pulled out of the filter bottle body 11 through the handle 193, and then the core in the inner cylinder 191 is replaced, and the filter element 19 with the new core is installed in the filter bottle.

[0140] Furthermore, if Figure 11 As shown, the inner cylinder 191 is provided with a flushing and drainage hole 192. If flushing is sufficient to clean the filter element 19 and restore its water purification capacity, the filter element 19 can be replaced without further consideration. Flushing water can then be injected into the filter element 19 from the raw water inlet and / or pure water outlet of the removable filter element assembly 10 to flush the core of the filter element 19. The resulting wastewater is then discharged from the flushing and drainage hole 192 in the inner cylinder 191 into the gap between the inner cylinder 191 and the filter bottle body 11, and then discharged from the filter bottle body 11 through the concentrated water outlet on the filter bottle body 11.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] The above-described embodiments merely illustrate several implementations of the present invention, and while their 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 numerous variations 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 bottle unit, characterized in that: include, A limiter, wherein the limiter is provided with a convex tooth for cooperating with a tooth groove group on the filter bottle cover to limit the filter bottle cover from being screwed loose from the first bottle opening of the filter bottle body to open the first bottle opening, or the limiter is provided with a tooth groove group for cooperating with the convex tooth on the filter bottle cover to limit the filter bottle cover from being screwed loose from the first bottle opening of the filter bottle body to open the first bottle opening, and the tooth groove group includes at least two tooth grooves; A filter bottle body, wherein one of the limiting member and the filter bottle body is provided with a guide protrusion, and the other is provided with a guide groove, wherein the guide protrusion is located in the guide groove, and a clearance fit is formed between the side wall of the guide groove and the guide protrusion in the screwing direction of the filter bottle cover; The filter bottle body is provided with the guide protrusion, the limiting member covers the outside of the guide protrusion, and the limiting member is provided with a first limiting rib and a second limiting rib both arranged along the axial direction of the filter bottle body on a surface facing the guide protrusion. The first limiting rib and the second limiting rib are relatively spaced apart to form the guide groove, and the guide protrusion can slide along the axial direction of the filter bottle body in the guide groove; The limiting member is an annular structure, is sleeved outside the filter bottle body, and can slide along the axial direction of the filter bottle body.

2. The filter bottle unit according to claim 1, characterized in that: The portion of the limiting member located between the first limiting rib and the second limiting rib is a spring buckle, a gap is provided between the portion of the limiting member where the first limiting rib is provided and the spring buckle, a gap is provided between the portion of the limiting member where the second limiting rib is provided and the spring buckle, a stop protrusion is provided on the inner side surface of the spring buckle, and the guide protrusion is limited to a side of the stop protrusion close to the first bottle mouth.

3. The filter bottle unit according to claim 1, characterized in that A stop protrusion is provided on the side of the limiting member facing the filter bottle body, and the guide protrusion is limited to a side of the stop protrusion close to the first bottle mouth.

4. The filter bottle unit according to claim 2 or 3, characterized in that: An anti-drop protrusion is provided on the outside of the filter bottle body. The anti-drop protrusion is located on a side of the anti-retreat protrusion away from the first bottle mouth. The anti-retreat protrusion can move between the anti-drop protrusion and the guide protrusion in the axial direction of the filter bottle body.

5. The filter bottle unit according to claim 4, characterized in that: The anti-fall protrusion surrounds the filter bottle body for at least one circle in the circumferential direction.

6. The filter bottle unit according to claim 4, characterized in that: When the protruding tooth is inserted into the tooth groove, the retreat-stopping protrusion is spaced apart from the guiding protrusion and the anti-drop protrusion.

7. The filter bottle unit according to claim 4, characterized in that: When the protruding tooth is inserted into the tooth groove, the distance between the retreat-stopping protrusion and the anti-falling protrusion is greater than the height of the protruding tooth.

8. The filter bottle unit according to any one of claims 1 to 3, characterized in that: There are multiple guide protrusions, which are arranged at intervals along the circumference of the filter bottle body; there are multiple guide grooves, which are arranged at intervals along the circumference of the limiter; and the guide protrusions correspond to the guide grooves one by one.

9. A detachable filter element assembly, characterized in that: The filter bottle comprises a filter bottle cover and the filter bottle body unit according to any one of claims 1 to 8, wherein the filter bottle cover can be screwed on the first bottle mouth of the filter bottle body to form a filter bottle for placing a filter element.

10. A water purifier, characterized in that: The detachable filter element assembly according to claim 9 is included, wherein the filter element is installed in the filter bottle.

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