A knob-type snap-in filter cartridge replacement assembly

Abstract

The utility model relates to replace filter core technical field especially, relate to a knob type buckle filter core replacement subassembly. A knob type buckle filter core replacement subassembly, including the filter core that the water guide hole is set up in the middle, the upper fixed post that the upper cover is set up and extends downward and the lower fixed post that the lower cover is set up and extends upward, the fixed hole is vertically set up all on this upper cover and this lower cover, the fixed hole and the water guide hole's central axis correspond, the outside of this upper cover and this lower cover all annularly set up a plurality of elastic limit buckles, and the elastic limit buckle is curved and bends downward or upward. The utility model discloses the multiple elastic limit buckles that annularly set up in the upper and lower cover side edge are used for and the inner wall of water purifier are in contact, realize the inside diameter matching, and the elastic adjusting buckle that sets up is adjusted to realize the self -adaptation to the length of water purification inner chamber through the elastic deformation, and double -regulation avoids the filter core to shake and rotate in the cavity when bearing the water flow impact after installation because the size is too small.

Description

Technical Field

[0001] This utility model relates to the field of filter replacement technology, and in particular to a knob-type snap-on filter replacement assembly. Background Technology

[0002] The conventional structure of existing faucet water purifiers includes an upper shell that connects to the faucet and a lower shell that is screwed to the top cover. The cavity formed by the combination of the upper and lower shells is used to hold the filter element. To ensure the stability of the connection between the upper and lower shells, a screw connection is generally used. However, the size of the cavity is not fixed. There is a PP cotton replacement filter element on the market, which specifically includes a PP cotton filter element, an upper cover with spaced limiting posts, and a lower cover with a water outlet. It can be inserted into the cavity of a conventional water purifier. However, because the diameter is too small, the filter element shakes and rotates in the cavity when subjected to water flow impact, affecting the filtration effect. Utility Model Content

[0003] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description and other accompanying drawings.

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a knob-type snap-on filter cartridge replacement component. Multiple elastic limiting snaps are arranged in a ring on the sides of the upper and lower covers to abut against the inner wall of the water purifier to achieve inner diameter matching. The elastic adjustment snaps are designed to adapt to the length of the water purification cavity through elastic deformation adjustment. The dual adjustment prevents the filter cartridge from shaking and rotating in the cavity when subjected to water flow impact because the size is too small after installation.

[0005] This utility model provides a knob-type snap-on filter cartridge replacement assembly, including a filter cartridge with a water guide hole in the middle, an upper cover with an upper fixing post extending downward, and a lower cover with a lower fixing post extending upward. The upper cover is inserted into the water guide hole through the upper fixing post and fits against the top surface of the filter cartridge. The lower cover is inserted into the water guide hole through the lower fixing post and fits against the bottom surface of the filter cartridge. Water outlet holes are evenly arranged on the lower cover. Fixing holes are vertically arranged on both the upper and lower covers. The fixing holes correspond to the central axis of the water guide hole. Several elastic limiting buckles are arranged in a ring on the outer side of both the upper and lower covers. The elastic limiting buckles are arc-shaped and bend downward or upward.

[0006] The filter cartridge with a water guide hole in the middle, together with the fixing holes on the upper and lower covers, allows tap water to pass through. After the tap water enters the filter cartridge and is filtered, it flows out through the water outlet on the lower cover. The upper and lower covers are respectively glued to the upper and lower sides of the filter cartridge. The upper fixing post extending from the upper cover and the lower fixing post extending from the lower cover are inserted into the water guide hole to increase the tightness of the connection between the upper and lower covers and the filter cartridge, and prevent the upper and lower covers from separating after filling with water. Multiple elastic limiting buckles with rings on the sides of the upper and lower covers are used to abut against the inner wall of the water purifier to fix the position of the filter cartridge and prevent the filter cartridge from shaking and rotating in the cavity when subjected to water flow impact due to its small size after installation.

[0007] In some embodiments, one end of the elastic limiting buckle is connected to the upper cover or the lower cover, and the other end of the elastic limiting buckle is a free end. An abutment plate extends from the end of the free end and is vertically positioned. The extended abutment plate is perpendicular to the upper and lower covers, allowing it to fit snugly against the inner wall of the water purifier. Preferably, the abutment plate is also provided with spaced stripes to increase the friction between the abutment plate and the inner wall of the water purifier, enabling it to withstand stronger water flow impact.

[0008] In some embodiments, the elastic retaining buckle has a hollow hole. The hollow hole in the elastic retaining buckle is used to increase the elasticity of the retaining buckle and increase the degree of bending of the elastic buckle to adapt to the inner diameter of water purifiers of different diameters.

[0009] In some embodiments, the top cover is provided with an annularly spaced adjustment groove, and an elastic adjustment buckle is provided in the adjustment groove. The front end of the elastic adjustment buckle is connected to one end of the adjustment groove, and the tail end of the elastic adjustment buckle is inserted into the bottom side of the top cover through the adjustment groove. In addition to the filter cartridge diameter not matching the water purifier's inner cavity, the length of the filter cartridge may also not match the length of the water purifier's inner cavity. Therefore, an adjustment groove is provided on the top cover, and an elastic adjustment buckle is installed on the adjustment groove. The end of the elastic adjustment buckle can slide along the adjustment groove. When the filter cartridge is inserted into the water purifier, the elastic adjustment buckle abuts against the top of the water purifier. When it is pressed into the water purifier, the end of the elastic adjustment buckle will slide, causing the overall length of the filter cartridge to change. When the lower shell of the water purifier is screwed in, the elastic adjustment buckle, which has lost pressure, will rebound to a certain extent and abut against the lower shell surface of the water purifier, thereby achieving self-adaptation of the length of the water purifier's inner cavity.

[0010] In some embodiments, the tail end of the elastic adjustment buckle extends with an abutment rod, the diameter of which is larger than the adjustment groove. When the elastic adjustment buckle is subjected to force, the abutment rod slides along the adjustment groove. The abutment rod is used to fix the end of the elastic adjustment buckle and make it slide along a fixed path. It is understood that, in order to ensure that the abutment rod can slide smoothly on the bottom side of the upper cover, the adhesive is applied away from the sliding groove area.

[0011] In some embodiments, an auxiliary rod is further included, with several fixing posts extending outward from the side of the auxiliary rod at intervals. The ends of the fixing posts are rounded and inserted into the filter element, and the auxiliary rod fits against the outer wall of the filter element. The auxiliary rod is used to help fix the overall shape of the filter element, preventing deformation of the filter element after water flow impact, which could lead to it getting stuck in the water purifier and difficult to remove after long-term use. The multiple fixing posts are used to improve the gripping ability. When replacing the filter element, the user can grasp the bottom cover and pull out the entire filter element through the cooperation of the fixing posts and the auxiliary rod, achieving convenient replacement.

[0012] In some embodiments, the auxiliary rod has adhesive rods extending from both ends, perpendicular to the auxiliary rod, and extending to the point where the upper or lower cover fits with the filter element. The adhesive rods are located between the upper and lower covers and are adhered to them, enhancing the integrity between the auxiliary rod and the upper and lower covers, facilitating the removal of the filter element.

[0013] In some embodiments, the filter element is made of PP cotton. PP cotton is a common material for filter elements in the prior art. PP cotton has a strong dirt-holding capacity, a long service life, and low cost, and can quickly filter particles in tap water.

[0014] By adopting the above technical solution, the beneficial effects of this utility model are:

[0015] This utility model features multiple elastic limiting buckles arranged in a ring on the sides of the upper and lower covers, which are used to abut against the inner wall of the water purifier to achieve inner diameter matching. The elastic adjustment buckles are designed to adapt to the length of the water purifier cavity through elastic deformation adjustment. The dual adjustment prevents the filter element from shaking and rotating inside the cavity when subjected to water flow impact due to its small size after installation.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0017] Undoubtedly, such and other objects of this invention will become more apparent after the following detailed description of the preferred embodiments, which are illustrated in various accompanying drawings and figures.

[0018] To make the above and other objects, features and advantages of this utility model more apparent and understandable, one or more preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] In the accompanying drawings, the same parts use the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one or several embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on such drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the connection between a conventional tap water purifier and a filter element in some embodiments of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of the filter replacement assembly in some embodiments of the present invention;

[0024] Figure 3 This is a schematic diagram of the specific structure of the upper cover in some embodiments of this utility model;

[0025] Figure 4 This is a schematic diagram showing the filter replacement assembly and its interaction with a tap water purifier in some embodiments of this utility model.

[0026] Explanation of key figure labels:

[0027] 1. Filter element;

[0028] 11. Water guide hole;

[0029] 2. Top cover;

[0030] 21. Fixed column;

[0031] 3. Bottom cover;

[0032] 31. Lower fixed column; 32. Water outlet;

[0033] 4. Flexible limit buckle;

[0034] 41. Abutment plate; 42. Perforated hole;

[0035] 5. Adjustment groove;

[0036] 6. Flexible adjustable buckle;

[0037] 61. Abutment rod;

[0038] 7. Auxiliary rod;

[0039] 71. Fixing rod; 72. Fitting rod. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0041] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0043] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Reference Figures 1-2 , Figure 1 This is a schematic diagram of the connection between a conventional tap water purifier and a filter element in some embodiments of this utility model; Figure 2 This is a schematic diagram of the overall structure of the filter replacement assembly in some embodiments of this utility model.

[0045] According to some embodiments of the present invention, the present invention provides a knob-type snap-on filter element 1 replacement assembly, including a filter element 1 with a water guide hole 11 in the middle, an upper cover 2 with an upper fixing post 7121 extending downward and a lower cover 3 with a lower fixing post 7131 extending upward; the upper cover 2 is inserted into the water guide hole 11 through the upper fixing post 7121 and is in contact with the top surface of the filter element 1, and the lower cover 3 is inserted into the water guide hole 11 through the lower fixing post 7131 and is in contact with the bottom surface of the filter element 1. The lower cover 3 is evenly provided with water outlet holes 32. The upper cover 2 and the lower cover 3 are both vertically provided with fixing holes, which correspond to the central axis of the water guide hole 11. The outer sides of the upper cover 2 and the lower cover 3 are each provided with several elastic limiting buckles 4 in a ring shape. The elastic limiting buckles 4 are arc-shaped and bend downward or upward.

[0046] The filter element 1, with a water guide hole 11 in the middle, works with the fixing holes on the upper cover 2 and the lower cover 3 to allow tap water to pass through. After the tap water enters the filter element 1 and is filtered, it flows out through the water outlet hole 32 on the lower cover 3. The upper cover 2 and the lower cover 3 are respectively glued to the upper and lower sides of the filter element 1. The upper fixing post 7121 extended from the upper cover 2 and the lower fixing post 7131 extended from the lower cover 3 are inserted into the water guide hole 11 to increase the tightness of the connection between the upper and lower covers 3 and the filter element 1, and to prevent the upper and lower covers 3 from detaching after filling with water. Multiple elastic limiting buckles 4 are arranged in a ring on the sides of the upper and lower covers 3 to abut against the inner wall of the water purifier and fix the filter element 1 in position, so as to prevent the filter element 1 from shaking and rotating in the cavity when subjected to water flow impact due to its small size after installation.

[0047] One end of the elastic limiting buckle 4 is connected to the upper cover 2 or the lower cover 3, and the other end of the elastic limiting buckle 4 is a free end. An abutment plate 41 extends from the free end of the buckle, and the abutment plate 41 is vertically positioned. The extended abutment plate 41 is perpendicular to the upper cover 2 and the lower cover 3, allowing it to fit snugly against the inner wall of the water purifier. Preferably, the abutment plate 41 is also provided with spaced stripes to increase the friction between the abutment plate 41 and the inner wall of the water purifier, enabling it to withstand stronger water flow impact.

[0048] The elastic limiting buckle 4 has a hollow hole 42 inside. The hollow hole 42 inside the elastic limiting buckle 4 is used to increase the elasticity of the limiting buckle and increase the bending degree of the elastic buckle to adapt to the inner diameter of water purifiers of different diameters.

[0049] The replacement assembly also includes an auxiliary rod 7, with several fixing posts 71 extending outwards from the side of the auxiliary rod 7 at intervals. The ends of the fixing posts 71 are rounded and inserted into the filter element 1. The auxiliary rod 7 fits snugly against the outer wall of the filter element 1. The auxiliary rod 7 is used to help fix the overall shape of the filter element 1, preventing deformation of the filter element 1 after water flow impact, which could lead to it getting stuck in the water purifier and difficult to remove after long-term use. The multiple fixing posts 71 are used to improve the gripping ability. When replacing the filter element 1, the user can grasp the lower cover 3 and pull out the entire filter element 1 through the cooperation of the fixing posts 71 and the auxiliary rod 7, achieving convenient replacement.

[0050] The auxiliary rod 7 has two end fitting rods 72 extending from its head and tail. The fitting rods 72 are perpendicular to the auxiliary rod 7 and extend to the point where the upper cover 2 or the lower cover 3 fits against the filter element 1. The fitting rods 72 are located between the upper cover 2 and the lower cover 3 and are adhered to the upper cover 2 or the lower cover 3 to improve the integrity between the auxiliary rod 7 and the upper and lower covers 3, making it easier to remove the filter element 1.

[0051] The filter element 1 is made of PP cotton. PP cotton is a common material for filter elements 1 in the existing technology. PP cotton has a strong dirt-holding capacity, a long service life, and low cost, and can quickly filter particles in tap water.

[0052] Reference Figures 3-4 , Figure 3 This is a schematic diagram of the specific structure of the upper cover in some embodiments of this utility model; Figure 4 This is a schematic diagram showing the filter replacement assembly and its interaction with a tap water purifier in some embodiments of this utility model.

[0053] According to some embodiments of the present invention, optionally, the upper cover 2 is provided with an adjustment groove 5 at intervals in an annular shape, and an elastic adjustment buckle 6 is provided in the adjustment groove 5. The front end of the elastic adjustment buckle 6 is connected to one end of the adjustment groove 5, and the tail end of the elastic adjustment buckle 6 is inserted into the bottom side of the upper cover 2 through the adjustment groove 5. In addition to the mismatch between the diameter of filter element 1 and the inner cavity of the water purifier, the length of filter element 1 may also be mismatched with the length of the inner cavity of the water purifier. Therefore, an adjustment groove 5 is opened on the top cover 2, and an elastic adjustment buckle is installed on the adjustment groove 5. The end of the elastic adjustment buckle 6 can slide along the adjustment groove 5. When filter element 1 is inserted into the water purifier, the elastic adjustment buckle 6 abuts against the top of the water purifier. When it is inserted into the water purifier under pressure, the end of the elastic adjustment buckle 6 will slide, causing the overall length of filter element 1 to change. When the lower shell of the water purifier is screwed together, the elastic adjustment buckle 6, which loses pressure, will rebound to a certain extent and abut against the lower shell surface of the water purifier, thereby achieving self-adaptation of the inner cavity length of the water purifier.

[0054] The tail end of the elastic adjustment buckle 6 extends to provide an abutment rod 61. The diameter of the abutment rod 61 is larger than that of the adjustment groove 5. When the elastic adjustment buckle 6 is subjected to force, the abutment rod 61 slides along the adjustment groove 5. The abutment rod 61 is provided to fix the end of the elastic adjustment buckle 6 and make it slide along a fixed path. It can be understood that, in order to ensure that the abutment rod 61 can slide smoothly on the bottom side of the upper cover 2, the adhesive is applied to avoid the sliding groove area.

[0055] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0056] The term "embodiment" in this specification refers to a specific feature or characteristic described in connection with an embodiment that is included in at least one embodiment of the present invention. Therefore, phrases or "embodiments" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0057] Furthermore, the described features or characteristics may be incorporated into one or more embodiments in any other suitable manner. In the above description, specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented without the aforementioned one or more specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A knob-type snap-on filter element replacement assembly, characterized in that, include The filter element has a water guide hole in the middle; The upper cover has an upper fixing post extending downwards; The lower cover has a lower fixing post extending upwards; The upper cover is inserted into the water guide hole through the upper fixing post and fits against the top surface of the filter element. The lower cover is inserted into the water guide hole through the lower fixing post and fits against the bottom surface of the filter element. Water outlet holes are evenly arranged on the lower cover. Fixing holes are vertically arranged on both the upper and lower covers. The fixing holes correspond to the central axis of the water guide hole. Several elastic limiting buckles are arranged in a ring on the outer side of both the upper and lower covers. The elastic limiting buckles are arc-shaped and bend downward or upward.

2. The knob-type snap-on filter element replacement assembly according to claim 1, characterized in that, One end of the elastic limiting buckle is connected to the upper cover or the lower cover, and the other end of the elastic limiting buckle is a free end. The end of the free end is provided with an abutment plate, which is vertically arranged.

3. The knob-type snap-on filter element replacement assembly according to claim 1, characterized in that, The elastic limiting buckle has a hollowed-out hole inside.

4. The knob-type snap-on filter element replacement assembly according to claim 1, characterized in that, The top cover has annularly spaced adjustment grooves, and an elastic adjustment buckle is provided in the adjustment groove. The front end of the elastic adjustment buckle is connected to one end of the adjustment groove, and the tail end of the elastic adjustment buckle is inserted into the bottom side of the top cover through the adjustment groove.

5. The knob-type snap-on filter element replacement assembly according to claim 4, characterized in that, The tail end of the elastic adjustment buckle is provided with an abutment rod. The diameter of the abutment rod is larger than that of the adjustment groove. When the elastic adjustment buckle is subjected to force, the abutment rod slides along the adjustment groove.

6. The knob-type snap-on filter element replacement assembly according to claim 1, characterized in that, It also includes an auxiliary rod, on which several fixing posts are provided at intervals extending outward from the side. The ends of the fixing posts are round and inserted into the filter element. The auxiliary rod is in contact with the outer wall of the filter element.

7. The knob-type snap-on filter element replacement assembly according to claim 6, characterized in that, The auxiliary rod has fitting rods extending from both ends, which are perpendicular to the auxiliary rod and extend to the point where the upper or lower cover fits with the filter element.

8. The knob-type snap-on filter element replacement assembly according to claim 1, characterized in that, The filter element is made of PP cotton.

Images