Filter element for water purifier

Abstract

The filter element comprises a filter element shell, a water inlet seat, an end cover and a hoop assembly, the filter element shell is provided with a containing cavity with an opening in the top, the peripheral face of the top of the filter element shell protrudes outwards to form a protruding ring, a filter element body is detachably installed in the containing cavity, and the end cover is arranged on the water inlet seat. The end cover covers the upper end face of the protruding ring, the bottom of the end cover protrudes downwards to form an annular step inserted into the containing cavity, the outer wall face of the annular step is attached to the inner wall face of the protruding ring, the end cover and the protruding ring are locked and attached together through a hoop assembly, and when the hoop assembly is in a hooping state, the end cover and the protruding ring are fixed through the hoop assembly. The end cover is pressed tightly by the hoop assembly and the convex ring in the axial direction so as to seal the containing cavity. The hoop is used as a locking part between the filter element shell and the end cover, and the end cover and the convex ring are hooped or loosened from the radial direction by using the hoop assembly, so that the end cover can be easily disassembled and assembled to the top of the filter element shell, and the disassembly and assembly are more convenient and labor-saving.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of filter core of water purifier, and specifically relates to a filter core for water purifier. BACKGROUND

[0002] With the increasing demand of people for the health of drinking water, water purifiers are used more and more widely in various occasions (such as families, enterprises and some entertainment places, etc.). In order to achieve the best filtering and purifying effect, several filter cores are usually installed in the water purifier to filter and purify water for several times, and then the filtered and purified water is stored in a water tank for people to drink.

[0003] At present, the filter core is generally assembled in a filter core shell, and an end cover part with a water inlet and a water outlet is designed on the filter core shell. The filter core is packaged in the accommodating space formed by the end cover and the shell. At present, the end cover and the shell are generally connected by rotating and tightening or screwing. When the rotating and tightening is adopted, if the rotating force is not enough, water leakage may occur between the end cover and the shell. When the screwing is adopted, professional tools are needed for disassembly and assembly, and multiple screws are generally arranged circumferentially to ensure the sealing, which is relatively complicated and may cause the loss of screws and the phenomenon of screw slipping. Both of them have limitations in practical application and cannot meet the increasing use demand of users. SUMMARY

[0004] The utility model aims at solving the above-mentioned problems, and provides a filter core for water purifier.

[0005] The utility model adopts the technical scheme as follows: a filter core for water purifier, comprising a filter core shell, a water inlet seat, an end cover and a hoop assembly, wherein the filter core shell has an accommodating cavity with a top opening, the outer circumferential surface of the top of the filter core shell is outwardly protruded to form a convex ring, a filter core main body is detachably installed in the accommodating cavity, the end cover is arranged on the upper end surface of the convex ring, the bottom of the end cover is downwardly protruded to form an annular step inserted into the accommodating cavity, the outer wall surface of the annular step is attached to the inner wall surface of the convex ring, and the end cover and the convex ring are locked together by the hoop assembly; when the hoop assembly is in a clamped state, the end cover is pressed in the axial direction by the hoop assembly and the convex ring to close the accommodating cavity; when the hoop assembly is in an open state, the end cover is loosened, so that the end cover can be detached from the convex ring.

[0006] In a preferred embodiment, the water inlet seat is provided with a water inlet and a water outlet, and the water inlet is internally provided with a check valve for one-way flow from outside to inside.

[0007] In a preferred embodiment, the water inlet seat is mounted on the end cover, the filter core body has a hollow cavity, the water inlet seat is centrally provided with a water inlet channel in communication with the water inlet and the hollow cavity, and the water inlet seat is further provided with a water outlet channel in communication with the periphery of the filter core body and the water outlet.

[0008] In a preferred embodiment, the outer end surface of the annular step is provided from top to bottom with a plurality of annular grooves, a sealing ring is sleeved in the annular grooves, and the outer end surface of the sealing ring is elastically sealed with the inner end surface of the convex ring through the sealing ring.

[0009] In a preferred embodiment, the hoop assembly comprises two oppositely arranged half hoops, the two half hoops are rotationally connected through a pin shaft, the upper and lower end surfaces of the half hoops are bent to form positioning flanges, and the hoop slots are formed between the positioning flanges and the half hoops.

[0010] In a preferred embodiment, the outer periphery of the end cover is protruded to form a pressing edge with the same outer diameter as the convex ring, the inner diameter of the hoop slot is the same as the outer diameters of the pressing edge and the convex ring, and the thickness of the hoop slot is the same as the combined thickness of the convex ring and the pressing edge.

[0011] In a preferred embodiment, buckles are further arranged between the two half hoops for locking the two half hoops.

[0012] In a preferred embodiment, the first and second reinforcing rings are respectively sleeved on the lower end and the upper end of the filter core body.

[0013] In summary, due to the adoption of the above technical solutions, the advantageous effects of the present application are as follows: the hoop is used as the locking part between the filter core shell and the end cover, the hoop assembly is used to tighten or loosen the end cover and the convex ring in the radial direction, so that the end cover can be easily disassembled and assembled to the top of the filter core shell, which is convenient and labor-saving during disassembly, maintenance and replacement of the filter core, and has advantages that the current products do not have, and is worth promoting. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0015] Figure 2 It is a schematic diagram of the overall semi-section three-dimensional structure of the present application;

[0016] Figure 3 It is a schematic diagram of the overall sectional plane structure of the present application;

[0017] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0018] Figure 5 It is the three-dimensional structure schematic view of the hoop assembly in the utility model.

[0019] Marked in the figure: 1 - water inlet, 2 - water outlet, 3 - water inlet seat, 4 - half hoop ring, 41 - positioning flanging, 42 - buckle, 5 - end cover, 51 - annular step, 52 - drainage channel, 53 - water inlet channel, 54 - edge pressing, 6 - filter core shell, 61 - convex ring, 7 - filter core main body, 8 - first reinforcing ring, 9 - sealing ring, 10 - check valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0021] Referring to Figures 1-5 A filter core for a water purifier, comprising a filter core shell 6, a water inlet seat 3, an end cover 5 and a hoop assembly, wherein the filter core shell 6 has a containing cavity with a top opening, the filter core shell 6 has a convex ring 61 outwardly protruding from the outer circumferential surface of the top, the filter core main body 7 is detachably installed in the containing cavity, the end cover 5 is arranged on the upper end surface of the convex ring 61, the annular step 51 is formed by protruding downward from the bottom of the end cover 5 and inserted into the containing cavity, the outer wall surface of the annular step 51 is attached to the inner wall surface of the convex ring 61, and the end cover 5 and the convex ring 61 are locked together by the hoop assembly; when the hoop assembly is in a clamped state, the end cover 5 is pressed in the axial direction by the hoop assembly and the convex ring 61 to close the containing cavity; when the hoop assembly is in an open state, the end cover 5 is loosened so that the end cover 5 can be detached from the convex ring 61, the hoop assembly is used as the locking part between the filter core shell 6 and the end cover 5, the hoop assembly clamps or loosens the end cover 5 and the convex ring 61 from the radial direction, so that the end cover can be easily assembled and disassembled to the top of the filter core shell, and the filter core main body 7 is relatively simple and labor-saving during disassembly, maintenance and replacement.

[0022] The installation principle is that when the end cover 5 is installed, the annular step 51 is inserted into the convex ring 61, and then the hoop assembly is used to clamp the annular step 51 and the convex ring 61, so that the locking operation can be completed, when the filter core main body 7 is disassembled, the hoop assembly is opened, and then the end cover 5 is taken out upward, so that the filter core main body 7 can be replaced.

[0023] Further, the hoop assembly comprises two half hoops 4 arranged oppositely and connected by a pin shaft, the upper and lower end faces of the half hoop 4 are bent to form positioning flanges 41, the hoop slot is formed between the positioning flanges 41 and the half hoop 4, the outer periphery of the end cover 5 is protruded to form a pressing edge 54 with the same outer diameter as the convex ring 61, the inner diameter of the hoop slot is the same as the outer diameter of the convex ring 61 and the pressing edge 54, and the thickness of the hoop slot is the same as the combined thickness of the convex ring 61 and the pressing edge 54. The above design can tightly lock the convex ring 61 and the pressing edge 54 together through the cooperation of the positioning flanges 41 and the hoop slot, so as to realize the combination operation of the end cover 5 and the filter core shell 6.

[0024] Further, the two half hoops 4 are also provided with buckles 42 for locking the two half hoops 4, and the locking operation of the two half hoops 4 can be realized through the buckles 42, and the buckles 42 themselves are also relatively simple and labor-saving to open.

[0025] It should be noted that the buckle 42 is also called a buckle lock, which is a known technology that has been realized, and the specific structure and how to realize the locking will not be described in detail here.

[0026] Further, the water inlet seat 3 is provided with a water inlet 1 and a water outlet 2, and the water inlet 1 and the water outlet 2 are connected with the water inlet part of the water purifier (not shown in the figure) and the water tank, respectively. After the water is filtered, it is directly discharged into the water tank for storage. The water inlet 1 contains a check valve 10 that allows one-way flow from outside to inside. The check valve 10 can prevent water from flowing back from the water inlet 1.

[0027] Further, the water inlet seat 3 is installed on the end cover 5, the filter core body 7 has a hollow cavity, the center of the water inlet seat 3 is provided with a water inlet channel 53 connected with the water inlet 1 and the hollow cavity, and the water inlet seat 3 is also provided with a drainage channel 52 connected with the periphery of the filter core body 7 and the water outlet 2. When filtering water, the water is discharged into the hollow cavity of the filter core body 7 through the water inlet channel 53, and then filtered by the filter core body 7. After filtration, the water is discharged to the water outlet 2 through the periphery of the filter core body 7, thereby realizing the filtration operation of the water.

[0028] Further, the outer end face of the annular step 51 is provided with a plurality of annular grooves from top to bottom, and the annular grooves are provided with sealing rings 9. The outer end face of the sealing ring 9 is elastically sealed with the inner end face of the convex ring 61 through the sealing ring 9. The sealing ring 9 can ensure the sealing effect of the connection between the annular step 51 and the convex ring 61, and prevent water from leaking out of the connection between the annular step 51 and the convex ring 61. The sealing ring 9 is preferably two, but is not limited herein.

[0029] The sealing ring 9 is preferably a silica gel sealing ring, but is not limited herein.

[0030] Further, the accommodating cavity and the opposite end face of the end cover 5 are respectively provided with a first reinforcing ring 8 and a second reinforcing ring, the first reinforcing ring 8 and the second reinforcing ring are respectively sleeved on the lower end and the upper end of the filter core body 7, and the cooperation of the first reinforcing ring 8 and the second reinforcing ring can assist in limiting the installation position of the filter core body 7, so that the filter core body 7 is ensured to be in the middle position.

[0031] Among them, the inner diameter size of the first reinforcing ring 8 and the second reinforcing ring is same with the outer diameter size of the filter core body 7.

[0032] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A filter cartridge for a water purifier, characterized by, The filter cartridge comprises a filter cartridge shell, a water inlet base, an end cover and a clamp assembly. The filter cartridge shell has a top open accommodating cavity. A convex ring is formed on the outer periphery of the top of the filter cartridge shell. A filter cartridge body is detachably installed in the accommodating cavity. The end cover is arranged on the upper end surface of the convex ring. A ring-shaped step is formed on the bottom of the end cover and inserted into the accommodating cavity. The outer wall surface of the ring-shaped step is in close contact with the inner wall surface of the convex ring. The end cover and the convex ring are locked together by the clamp assembly. When the clamp assembly is in a clamped state, the end cover is pressed in the axial direction by the clamp assembly and the convex ring to close the accommodating cavity. When the clamp assembly is in an open state, the end cover is loosened so that the end cover can be detached from the convex ring.

2. A filter cartridge for a water filter as defined in claim 1, characterized in that: The water inlet base is provided with a water inlet and a water outlet. A check valve for one-way flow from outside to inside is arranged in the water inlet.

3. A filter cartridge for a water filter as defined in claim 2, wherein: The water inlet base is installed on the end cover. The filter cartridge body has a hollow cavity. The water inlet base is provided with a water inlet channel in the center and connected to the water inlet and the hollow cavity. The water inlet base is also provided with a drainage channel connected to the periphery of the filter cartridge body and the water outlet.

4. A filter cartridge for a water filter as defined in claim 1, wherein: A plurality of ring-shaped grooves are formed in the outer end surface of the ring-shaped step from top to bottom. A sealing ring is arranged in the ring-shaped groove. The outer end surface of the sealing ring is elastically sealed with the inner end surface of the convex ring by the sealing ring.

5. A filter cartridge for a water filter as defined in claim 1, wherein: The clamp assembly comprises two oppositely arranged half-clamp rings. The half-clamp rings are rotationally connected by a pin shaft. Positioning flanges are formed on the upper and lower end surfaces of the half-clamp rings. The half-clamp rings and the positioning flanges form a clamp groove.

6. A filter cartridge for a water filter as defined in claim 5, wherein: The outer periphery of the end cover is protruded to form a pressing edge with the same outer diameter as the convex ring. The inner diameter of the clamp groove is the same as the outer diameter of the pressing edge and the convex ring. The thickness of the clamp groove is the same as the combined thickness of the convex ring and the pressing edge.

7. A filter cartridge for a water filter as defined in claim 5, wherein: A buckle is arranged between the two half-clamp rings to lock them.

8. A filter cartridge for a water filter as defined in claim 1, wherein: First and second reinforcing rings are arranged on the opposite end surfaces of the accommodating cavity and the end cover respectively. The first and second reinforcing rings are respectively sleeved on the lower end and the upper end of the filter cartridge body.

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