CN214485985U - Filter flask body unit, can dismantle filter element group spare and purifier - Google Patents

Abstract

The utility model relates to a filter flask body unit, can dismantle filter element group spare and purifier, filter flask body unit include filter flask body and spacing ring, and the spacing ring cover is outside the filter flask body, and the axial displacement of filter flask body can be followed to the spacing ring, the filter flask body with one of them is equipped with the direction arch between the two of spacing ring, and another person is equipped with the edge the guide way that filter flask body axial was arranged, guide way are greater than the width of spacing section including the direction section and the spacing section that communicate each other, the width of direction section. When the spacing ring moved to locking position, the direction was protruding from the guide section entering spacing section, and the spacing ring can be with the spacing cooperation of filter flask lid, and the restriction filter flask lid moves to the filter flask lid and loosens from the filter flask body for the spacing ring. The guide groove is set to the form containing the guide section and the limiting section in the process of moving the limiting ring, so that the guide section with the larger width can play a guiding role for the guide protrusion, the guide protrusion can rapidly and smoothly enter the limiting section, and the assembly convenience is improved.

Description

Filter flask body unit, can dismantle filter element group spare and purifier

Technical Field

The utility model relates to a water purification unit technical field especially relates to filter flask body unit, can dismantle filter element group spare and purifier.

Background

With the continuous development of the field of water purifiers, the water purifier with the replaceable filter element is widely applied based on the characteristics of cost saving, long service life and the like. In the process of replacing the filter element, in order to take out the filter element from the filter flask body, a detachable filter flask cover is generally arranged on the filter flask body, and the filter flask cover can be taken out from the first bottle mouth after being detached from the filter flask body to replace a new filter element for use. The filter bottle cover and the filter bottle body are generally connected by threads, and the filter bottle body and the whole machine shell are connected by a turnbuckle mode. Because the acting force is along circumference, in the process of disassembling and replacing the filter element, the filter bottle body is not disassembled from the whole shell, and the filter bottle cover is unscrewed, so that water leakage is caused in the process of disassembling and replacing the filter element. In order to avoid the water leakage, an intermediate element is arranged between the filter bottle cover and the filter bottle body to limit the relative rotation between the filter bottle cover and the filter bottle body. However, the addition of intermediate elements would result in an assembly process that is not easy enough.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that the assembly is not convenient enough, provide a filter flask body unit, can dismantle filter element group spare and purifier, can improve the convenience of assembly.

The utility model provides a filter flask body unit, includes filter flask body and spacing ring, the spacing ring housing is in outside the filter flask body, the spacing ring can be followed the axial displacement of filter flask body, the filter flask body with one of them is equipped with the direction arch between them of spacing ring, and another person is equipped with the edge the guide way that filter flask body axial was arranged, the spacing ring medial surface is equipped with the edge the guide way that filter flask body axial was arranged, the guide way is including the guide section and the spacing section of mutual intercommunication, the width of guide section is greater than the width of spacing section, works as when the spacing ring removes locking position, the direction arch is followed the guide section gets into in the spacing section, the spacing ring can with the spacing cooperation of filter flask lid, the restriction the filter flask lid for the spacing ring motion extremely the filter flask lid is followed the pine takes off on the filter flask body.

The above scheme provides a filter flask body unit, and the spacing ring cover that contains is in outside the filter flask body, and in the in-process of assembly, the spacing ring is followed filter flask body axial displacement makes the spacing ring reachs locking position is convenient for restrict the filter flask lid for the filter flask body moves to the pine and takes off. Specifically, when the limiting ring moves to the locking position, the guide protrusion is located in the limiting section, the limiting ring cannot rotate relative to the filter bottle body, and the filter bottle cover assembled on the filter bottle body is in limiting fit with the limiting ring, so that the filter bottle cover is indirectly limited relative to the filter bottle body through the limiting ring. And in the process of moving the limiting ring, the guide groove is set to be in a form of containing the guide section and the limiting section, so that the guide section with larger width can guide the guide protrusion, the guide protrusion can rapidly and smoothly enter the limiting section, and the assembly convenience is improved.

In one embodiment, the width of the guide section is gradually reduced in a direction approaching the limiting section.

In one embodiment, both side walls of the guide section are cambered surfaces protruding into the guide section.

In one embodiment, two side wall positions of the limiting section are provided with reinforced limiting ribs, and the reinforced limiting ribs are arranged along the axial direction of the filter flask body.

In one embodiment, the guide protrusions and the guide grooves are multiple, the guide protrusions are arranged at intervals along the circumferential direction of the filter flask body, the guide grooves are arranged at intervals along the circumferential direction of the limiting ring, and the guide protrusions correspond to the guide grooves one to one.

In one embodiment, the limiting ring is provided with a limiting protrusion, the outer side surface of the filter bottle body is provided with a retaining protrusion, and when the limiting ring moves to the locking position, the retaining protrusion is limited on one side of the limiting protrusion, which is far away from the filter bottle cap.

In one embodiment, the retaining protrusion comprises an annular protrusion surrounding the outer side surface of the filter flask body, the limiting protrusions are multiple, and the limiting protrusions are arranged at intervals in the circumferential direction of the limiting ring.

In one embodiment, the guide protrusion is located on the filter bottle body, the guide groove is located on the inner side surface of the limiting ring, the guide protrusion is connected with the retaining protrusion, the guide protrusion is located on one side of the retaining protrusion, which is far away from the filter bottle cap, and the limiting protrusion is located on the limiting ring, which is close to the filter bottle cap.

In one embodiment, the guide protrusion is located on the filter bottle body, the guide groove is located on the inner side surface of the limiting ring, the limiting protrusion is connected with the end surface of the limiting ring facing the filter bottle cap, the limiting protrusion extends into the space enclosed by the limiting ring, the guide groove penetrates through the two end surfaces of the limiting ring, and the limiting protrusion is arranged on two sides of the inlet of the guide section.

In one embodiment, the limiting bulge is provided with convex teeth on the end surface facing the filter bottle cap.

In one embodiment, the outer side surface of the filter bottle body is provided with an external thread, and the external thread is limited on one side of the limiting bulge close to the filter bottle cap.

The utility model provides a can dismantle filter element group spare, includes filter bottle lid and above-mentioned arbitrary filter flask body unit, the filter bottle lid with the connection can be dismantled to the filter flask body, works as when the spacing ring removes locking position, the filter bottle lid can with spacing cooperation of spacing ring, the filter bottle lid will the first bottleneck shutoff of filter flask body works as the spacing ring removes to withdraw from during locking position, the filter bottle lid can be followed the first bottleneck pine of filter flask body takes off.

Above-mentioned scheme provides a can dismantle filter element group spare, through adopting above-mentioned arbitrary embodiment the filter flask body for at the in-process of equipment the entering that the direction arch can be quick accurate among the spacing section, and then the restriction the filter flask lid for the filter flask body motion improves the convenience of assembly.

In one embodiment, the open end of the filter bottle cap is provided with a tooth socket for limiting and matching with a limiting ring located at the locking position.

In one embodiment, the toothed grooves are multiple, and the toothed grooves are distributed in a circle along the circumferential direction of the filter bottle cover.

A water purifier, comprising any one of the above detachable filter element assemblies.

Above-mentioned scheme provides a purifier through adopting the filter element group spare dismantled in above-mentioned arbitrary embodiment, convenience when improving the assembly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

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

FIG. 1 is a schematic structural view of a removable filter cartridge assembly according to the present embodiment;

FIG. 2 is an exploded view of the removable filter cartridge assembly of FIG. 1;

FIG. 3 is a schematic view of the construction of the filter body of the removable cartridge assembly of FIG. 1;

FIG. 4 is a schematic view of a stop collar of the removable cartridge assembly of FIG. 1;

FIG. 5 is a schematic view of the construction of a filter cap in the removable filter cartridge assembly of FIG. 1.

Description of reference numerals:

10. a removable filter element assembly; 11. a filter flask body; 111. a guide projection; 112. stopping the bulge; 113. an external thread; 114. a first bottle opening; 115. a second bottle mouth; 12. a limiting ring; 121. a guide groove; 1211. a guide section; 1212. a limiting section; 13. reinforcing the limiting ribs; 14. a limiting bulge; 15. a convex tooth; 16. a filter bottle cap; 161. a tooth socket.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 and 2, in one embodiment, a filter cartridge unit is provided, including a filter cartridge body 11. The filter bottle cap 16 can be screwed on the first bottle mouth 114 of the filter bottle body 11 to form a filter bottle, and the first bottle mouth 114 is further sealed. The second bottle opening 115 of the filter flask body 11 can be screwed on a filter element mounting seat (not shown in the figure) of the water purifier, so that the filter elements in the filter flask body 11 are correspondingly communicated with the water gaps on the filter element mounting seat.

When the filter element needs to be replaced in the filter bottle after being used for a period of time, the filter bottle body 11 can be detached from the filter element mounting seat, so that the water flow passage in the water purifier is separated from the filter bottle body 11. The filter cap 16 is then removed from the filter body 11, the first port 114 is opened, and the filter cartridge is removed from the filter body for replacement. Upon unscrewing the filter cap 16, the filter body 11 is already separated from the filter cartridge mounting seat, so that the first opening 114 is not opened, and water leakage does not occur.

Further, when the filter cap 16 is rotated when being screwed to the filter body 11 in the same direction as the filter body 11 is screwed to the filter mounting base, the filter cap 16 may be unscrewed from the filter body 11 before the filter body 11 is not removed from the filter mounting base during the filter replacement process, which may cause water leakage.

Based on this, as shown in fig. 1 and fig. 2, the filter flask body unit further includes a limiting ring 12, the limiting ring 12 is sleeved outside the filter flask body 11, and the limiting ring 12 can move along the axial direction of the filter flask body 11. One of the filter flask body 11 and the limiting ring 12 is provided with a guide projection 111, and the other is provided with a guide groove 121 arranged along the axial direction of the filter flask body 11. Specifically, as shown in fig. 2 and 3, in some embodiments, the filter flask body 11 is externally provided with a guide projection 111. As shown in fig. 4, the inner side of the retainer ring 12 is provided with a guide groove 121 axially arranged along the filter flask body 11. The guide groove 121 includes a guide section 1211 and a limiting section 1212, which are connected to each other, wherein the width of the guide section 1211 is greater than the width of the limiting section 1212. When the limiting ring 12 is moved to the locking position, the guide projection 111 enters the limiting section 1212 from the guide section 1211, and the limiting ring 12 can be in limiting fit with the filter bottle cap 16, so that the filter bottle cap 16 is limited from moving relative to the limiting ring 12 until the filter bottle cap 16 is released from the filter bottle body 11.

According to the filter bottle body unit provided by the scheme, the contained limiting ring 12 is sleeved outside the filter bottle body 11, and in the assembling process, the limiting ring 12 moves axially along the filter bottle body 11 to enable the limiting ring 12 to reach the locking position, so that the filter bottle cap 16 is limited to move to be loosened relative to the filter bottle body 11. Specifically, when the limiting ring 12 moves to the locking position, the guide protrusion 111 is located in the limiting section 1212, so that the limiting ring 12 cannot rotate relative to the filter flask body 11, and the filter flask cover 16 assembled on the filter flask body 11 is in limiting fit with the limiting ring 12, so that the filter flask cover 16 is indirectly limited by the limiting ring 12 from being loosened relative to the filter flask body 11. In the process of moving the stop ring 12, the guide groove 121 is configured to include the guide section 1211 and the stop section 1212, so that the guide section 1211 with a larger width can guide the guide projection 111, so that the guide projection 111 can rapidly and smoothly enter the stop section 1212, and the convenience of assembly is improved.

Further specifically, as shown in fig. 4, in one embodiment, the width of the guiding section 1211 gradually decreases in a direction approaching the limiting section 1212. Therefore, when the retainer ring 12 moves axially along the filter bottle body 11, the guide protrusion 111 enters the guide groove 121 from the entrance where the width of the guide section 1211 is the largest, then gradually moves under the guiding action of the guide section 1211, and finally enters the retainer section 1212 accurately and quickly.

Assuming that the end of the filter flask body 11 assembled with the filter cartridge mounting seat is a head end and the end assembled with the filter flask cover 16 is a tail end, the limiting ring 12 is sleeved on the filter flask body 11 from the head end of the filter flask body 11 in the assembling process, and then moves from the head end to the tail end until the guide protrusion 111 slides into the limiting section 1212.

More specifically, in one embodiment, as shown in fig. 4, both sidewalls of the guiding section 1211 are cambered surfaces protruding into the guiding section 1211.

Alternatively, the two sidewalls of the guiding portion 1211 may be formed on two planes gradually approaching to each other in the direction of approaching the limiting portion 1212.

Further, since the main function of the limiting section 1212 is to limit the guide protrusion 111 from rotating relative to the limiting section 1212 in the circumferential direction of the filter bottle body 11, in an embodiment, as shown in fig. 4, two side wall positions of the limiting section 1212 are provided with reinforced limiting ribs 13, and the reinforced limiting ribs 13 are arranged along the axial direction of the filter bottle body 11. Strengthen setting up of spacing muscle 13 can increase right the spacing reliability of guide projection 111 avoids when the revolving force is great guide projection 111 follows the condition that spacing section 1212 deviates from takes place.

Further, as shown in fig. 2 and 3, the guide protrusion 111 is a rectangular block-shaped structure, and a long side of the guide protrusion 111 is arranged along the length direction of the reinforcing limiting rib 13. The width of the guide protrusion 111 matches the width of the limiting section 1212. Specifically, the width of the guide protrusion 111 may be slightly smaller than the width of the limiting section 1212, so that the limiting ring 12 can rotate by a slight angle Δ d relative to the filter flask body 11 during the assembly process, so that the limiting ring 12 can be in limiting fit with the filter flask cover 16.

Assuming that the filter bottle cap 16 and the limiting ring 12 are in concave-convex fit, the limiting ring 12 can rotate relative to the filter bottle body 11 within a certain allowable angle Δ d, so that the convenience of assembly between the limiting ring 12 and the filter bottle body 11 can be effectively improved, and the requirement on manufacturing accuracy is reduced. However, the angle Δ d that the limiting ring 12 can rotate relative to the filter bottle body 11 should ensure that when the filter bottle cap 16 rotates together with the limiting ring 12 by the angle Δ d, the filter bottle cap 16 does not move to be loose relative to the filter bottle body 11, in other words, the filter bottle cap 16 can also block the mouth of the filter bottle body 11, so as to avoid water leakage.

Further, as shown in fig. 3, the guide protrusion 111 is located on the outer side of the filter flask body 11. The orientation on the direction arch 111 the terminal surface of filter flask body 11 head end is the arc guide surface of evagination, plays the guide effect, improves the convenience of assembly.

Further, in one embodiment, as shown in fig. 3 and 4, the guide protrusions 111 and the guide grooves 121 are multiple, the multiple guide protrusions 111 are arranged at intervals along the circumferential direction of the filter flask body 11, the multiple guide grooves 121 are arranged at intervals along the circumferential direction of the limiting ring 12, and the guide protrusions 111 correspond to the guide grooves 121 one by one.

The plurality of guide protrusions 111 and the plurality of guide grooves 121 are arranged so that the circumferential position limitation between the limiting ring 12 and the filter flask body 11 is more reliable, but the requirement on the assembly accuracy and the assembly convenience is higher to ensure that the plurality of guide protrusions 111 and the plurality of guide grooves 121 are all matched in place, and the necessity of arranging the guide grooves 121 in a manner of containing the guide sections 1211 is more obvious.

Further, in one embodiment, as shown in FIG. 4, the stop collar 12 is provided with a stop protrusion 14. As shown in fig. 2 and 3, the outer side of the filter flask body 11 is provided with a retaining protrusion 112. When the limiting ring 12 moves to the locking position, the retaining protrusion 112 is limited on a side of the limiting protrusion 14 away from the filter bottle cap 16.

So that the retaining protrusion 112 can prevent the retainer ring 12 from falling off from the head end of the filter bottle body 11 when the retainer ring 12 is assembled to the filter bottle body 11.

Further, as shown in fig. 2 and 3, when the filter bottle body 11 is in threaded connection with the filter bottle cap 16, the outer side surface of the filter bottle body 11 may be provided with an external thread 113, and the protruding external thread 113 may be limited at one end of the limiting protrusion 14 close to the filter bottle cap 16, so as to prevent the limiting ring 12 from falling off from the tail end of the filter bottle body 11.

It should be noted that, under the limiting action of the external thread 113 and the retaining protrusion 112, the limiting ring 12 can be ensured to be always sleeved on the filter bottle body 11, but the limiting ring 12 can still move in the axial direction of the filter bottle body 11. In other words, the distance between the external thread 113 and the retaining protrusion 112 is greater than the thickness of the limiting protrusion 14, and the limiting protrusion 14 can move between the external thread 113 and the retaining protrusion 112.

After the filter bottle cap 16 is assembled on the filter bottle body 11, the whole shell of the water purifier can be used for keeping the limiting fit between the limiting ring 12 and the filter bottle cap 16. Specifically, a locking protrusion may be disposed on a casing (not shown) of the water purifier, and when the filter bottle unit and the filter element mounting seat are assembled, the locking protrusion on the casing connected to the filter element mounting seat can limit the limiting ring 12 at the locking position in an abutting manner, so as to limit the filter bottle cap 16 from being released from the filter bottle body 11.

Further specifically, when the filter bottle cap 16 and the limiting ring 12 are in concave-convex fit, and the concave-convex fit is released in a manner that the limiting ring 12 and the filter bottle cap 16 move in a direction away from each other in the axial direction of the filter bottle body 11, the locking protrusion can abut against one side of the limiting ring 12 away from the filter bottle cap 16 to prevent the limiting ring 12 from moving in a direction away from the filter bottle cap 16, so that the reliability of the limiting ring 12 and the filter bottle cap 16 in limit fit is ensured.

Further, in one embodiment, as shown in FIGS. 2 and 3, the retaining protrusion 112 comprises an annular protrusion that surrounds the outside of the filter bottle body 11. As shown in fig. 4, the limiting protrusion 14 is provided in plurality, and the limiting protrusions 14 are arranged at intervals in the circumferential direction of the limiting ring 12. The stop collar 12 is effectively prevented from falling from the head end of the filter flask body 11.

Further, in one embodiment, the guide protrusion 111 is located on the filter flask body 11, and the guide groove 121 is located on the inner side of the position-limiting ring 12. The guide protrusion 111 is connected to the retaining protrusion 112, and the guide protrusion 111 is located on a side of the retaining protrusion 112 away from the filter bottle cap 16. The limiting bulge 14 is positioned on the limiting ring 12 close to the filter bottle cap 16.

When the limit projection 14 passes over the retaining projection 112 and reaches the side of the retaining projection 112 close to the filter bottle cap 16, the guide projection 111 is just positioned in the guide groove 121.

More specifically, in one embodiment, as shown in fig. 4, the guide protrusion 111 is located on the filter flask body 11, and the guide groove 121 is located on the inner side of the limiting ring 12. The limiting bulge 14 is connected with the end surface of the limiting ring 12 facing the filter bottle cap 16, and the limiting bulge 14 extends into the space enclosed by the limiting ring 12. The guide groove 121 penetrates through two end faces of the limit ring 12, and the limit protrusions 14 are arranged on two sides of an inlet of the guide section 1211. As shown in fig. 4, when there are a plurality of guide grooves 121, both ends of the retaining protrusion 112 are respectively connected to the sidewalls of the adjacent two-sided guide grooves 121.

Therefore, the limiting protrusion 14 not only can cooperate with the retaining protrusion 112 to prevent falling, but also can provide a guiding and limiting function for the guiding protrusion 111, so that the guiding protrusion 111 can enter the guiding section 1211 more accurately. Specifically, the limiting protrusions 14 are disposed on two sides of the outlet of the guiding section 1211, and the limiting protrusions 14 extend into the space enclosed by the limiting ring 12, so that the guiding protrusion 111 can only slide between two limiting protrusions 14 and enter the guiding section 1211.

Further, in one embodiment, as shown in fig. 4, the limiting protrusion 14 is provided with a convex tooth 15 on the end surface facing the filter cap 16. The convex teeth 15 are used for being matched with tooth grooves 161 on the filter bottle cover 16, and therefore limiting matching between the limiting ring 12 and the filter bottle cover 16 is achieved. Moreover, because the limiting protrusion 14 is located on the end surface of the limiting ring 12 facing the filter bottle cap 16, and the limiting protrusion 14 extends into the space enclosed by the limiting ring 12, the area of the end surface of the limiting protrusion 14 facing the filter bottle cap 16 is large, so that the convex teeth 15 can be conveniently arranged, the surface near the convex teeth 15 can be conveniently attached to the end surface of the filter bottle cap 16, and the convex teeth 15 can be ensured to be limited in the tooth grooves 161.

Further, as shown in fig. 1 and 2, in another embodiment, a detachable filter element assembly 10 is provided, which comprises a filter bottle cap 16 and a filter bottle body unit as described in any one of the above, wherein the filter bottle cap 16 is detachably connected with the filter bottle body 11, when the retainer ring 12 is moved to a locking position, the filter bottle cap 16 can be in limit fit with the retainer ring 12, and the filter bottle cap 16 blocks the first opening 114 of the filter bottle body 11. When the stop collar 12 is moved out of the locking position, the filter bottle cap 16 can be released from the first mouth 114 of the filter bottle body 11.

According to the detachable filter element assembly 10 provided by the scheme, the filter bottle body 11 is adopted in any one of the above embodiments, so that the guide protrusions 111 can quickly and accurately enter the limiting sections 1212 in the assembling process, the filter bottle cover 16 is further limited to move relative to the filter bottle body 11, and the assembling convenience is improved.

Specifically, as shown in fig. 5, in one embodiment, the open end of the filter bottle cap 16 is provided with splines 161 for positive engagement with the stop collar 12 in the locked position. Specifically, the splines 161 are configured to mate with the teeth 15 on the stop collar 12.

Further, as shown in fig. 5, in one embodiment, the teeth 161 are multiple, and the teeth 161 are distributed along the circumference of the filter bottle cap 16. Therefore, in the assembling process, the concave-convex matching between the limiting ring 12 and the filter bottle cap 16 can be realized as long as the convex teeth 15 on the limiting ring 12 are inserted into one of the tooth grooves 161, the assembling convenience is further improved, and the requirement on the manufacturing precision is reduced.

Further, in yet another embodiment, a water purifier is provided, comprising the removable filter cartridge assembly 10 of any one of the above.

The water purifier provided by the scheme improves the convenience in assembly by adopting the detachable filter element assembly 10 in any embodiment.

Specifically, the purifier can include the filter core mount pad, filter flask body 11 is detained soon on the filter core mount pad, the direction of filter flask body 11 detaining soon with filter flask lid 16 screws to the direction of rotation on the filter flask body 11 is unanimous, the bottleneck of the head end of filter flask body 11 with the filter core mount pad intercommunication.

Further, in an embodiment, the water purifier further includes a whole casing, the filter element mounting seat is connected with the whole casing, and a locking protrusion is disposed on the whole casing, and when the detachable filter element assembly is assembled with the filter element mounting seat, the locking protrusion limits the limiting member to be abutted to the locking position.

In the process of disassembly, when the filter flask body 11 is not disassembled from the filter flask mounting seat, the locking protrusion always limits the limiting member at the locking position, and as the filter flask body 11 is gradually pulled out from the whole casing, the limiting member gradually disengages from the locking protrusion, at this time, the limiting member can be pushed in the direction away from the first bottle mouth 114, so that the limiting member exits from the locking position, and the tooth 15 exits from the tooth groove 161.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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

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

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

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

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

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

Claims (15)

1. The utility model provides a filter flask body unit, its characterized in that, includes filter flask body and spacing ring, the spacing ring housing is in outside the filter flask body, the spacing ring can be followed the axial displacement of filter flask body, the filter flask body with one of them is equipped with the direction arch between them of spacing ring, and another person is equipped with the edge the guide way that filter flask body axial was arranged, the guide way is including the guide section and the spacing section of mutual intercommunication, the width of guide section is greater than the width of spacing section, works as when the spacing ring removes locking position, the direction arch is followed the guide section gets into in the spacing section, the spacing ring can with the spacing cooperation of filter flask lid, the restriction the filter flask lid for the spacing ring motion extremely the filter flask lid is followed the filter flask lid is gone up the pine and is taken off.

2. The filter bottle body unit of claim 1, wherein the width of the guide section gradually decreases in a direction approaching the stopper section.

3. The filter bottle unit of claim 2, wherein both sidewalls of the guide section are curved surfaces that project into the guide section.

4. The filter bottle body unit as claimed in claim 1, wherein two side wall positions of the limiting section are provided with reinforced limiting ribs, and the reinforced limiting ribs are arranged along the axial direction of the filter bottle body.

5. The filter bottle body unit according to claim 1, wherein the guide protrusions and the guide grooves are a plurality of ones, the plurality of guide protrusions are arranged at intervals in the circumferential direction of the filter bottle body, the plurality of guide grooves are arranged at intervals in the circumferential direction of the stopper ring, and the guide protrusions and the guide grooves correspond one to one.

6. The filter bottle body unit according to any one of claims 1 to 5, wherein the limiting ring is provided with a limiting protrusion, the outer side surface of the filter bottle body is provided with a retaining protrusion, and when the limiting ring moves to the locking position, the retaining protrusion is limited on the side of the limiting protrusion away from the filter bottle cap.

7. The filter bottle body unit of claim 6, wherein the retaining protrusion comprises a plurality of annular protrusions surrounding the outer side surface of the filter bottle body, and the plurality of retaining protrusions are arranged at intervals in the circumferential direction of the retaining ring.

8. The filter bottle body unit of claim 7, wherein the guide protrusion is located on the filter bottle body, the guide groove is located on the inner side surface of the limiting ring, the guide protrusion is connected with the retaining protrusion, the guide protrusion is located on the side of the retaining protrusion far away from the filter bottle cap, and the limiting protrusion is located on the portion, close to the filter bottle cap, of the limiting ring.

9. The filter bottle body unit according to claim 6, wherein the guide protrusion is located on the filter bottle body, the guide groove is located on the inner side surface of the limit ring, the limit protrusion is connected with the end surface of the limit ring facing the filter bottle cap, the limit protrusion extends into the space enclosed by the limit ring, the guide groove penetrates through the two end surfaces of the limit ring, and the limit protrusion is arranged on both sides of the inlet of the guide section.

10. The filter bottle body unit of claim 9, wherein the stop lug has a tooth on an end surface facing the filter bottle cap.

11. The filter bottle body unit as claimed in claim 6, wherein the outer side of the filter bottle body is provided with an external thread, and the external thread is limited on one side of the limiting protrusion close to the filter bottle cap.

12. The utility model provides a can dismantle filter element group spare, its characterized in that, includes filter flask lid and the filter flask body unit of any one of claims 1 to 11, the filter flask lid with the filter flask body can be dismantled and be connected, works as when the spacing ring removes locking position, the filter flask lid can with spacing cooperation of spacing ring, the filter flask lid will the first bottleneck shutoff of filter flask body, works as the spacing ring removes to withdraw from during locking position, the filter flask lid can be followed the first bottleneck pine of filter flask body takes off.

13. The removable filter cartridge assembly of claim 12, wherein the open end of the filter cap is provided with splines for positive engagement with a stop collar in the locked position.

14. The removable filter element assembly of claim 13, wherein the splines are a plurality of splines distributed in a circle around the circumference of the filter cap.

15. A water purification machine comprising a removable filter cartridge assembly according to any one of claims 12 to 14.

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