Filter element and fluid treatment equipment

Abstract

The utility model relates to a filter element and fluid treatment equipment. The filter element comprises a first shell, a second shell and a filter assembly, wherein the first shell comprises a first butt joint part and a first sleeving part; the first shell comprises a first butt joint part and a first sleeve joint part, the second shell comprises a second butt joint part and a second sleeve joint part, the first butt joint part is clamped and matched with the second butt joint part, so that a containing cavity is formed between the first sleeve joint part and the second sleeve joint part, and the containing cavity is isolated from the outside; the filter assembly is contained in the containing cavity. By means of the structure, the containing cavity for containing the filter element can be sealed in a clamping mode, and pollution to the interior of the containing cavity caused by connection modes such as welding is avoided.

Description

Technical Field

[0001] The utility model relates to the field of water purifiers, specifically to filter elements and fluid treatment devices. Background Art

[0002] In fluid treatment devices such as water purifiers, generally, a filter element is used to filter the input fluid, so as to output a fluid that meets the user's needs. Before use, the filter components in the filter element need to be protected from contamination and damage. Therefore, a housing is usually provided outside the filter components to form a cavity for accommodating the filter components, isolating the filter components from the external environment. To facilitate the installation of the filter components, the housing is usually divided into multiple parts. Currently, the common filter element housing usually uses welding to connect multiple parts to achieve the required isolation effect. However, due to the limitations of the welding process itself, substances such as welding slag and polluting gases are inevitably left, and these substances may still contaminate the filter components. Summary of the Utility Model

[0003] In view of this, the utility model provides a filter element and a fluid treatment device, which can reduce the contamination of the filter element during the production process.

[0004] To solve the above technical problems, a technical solution adopted by this application is: to provide a filter element, including a first housing, a second housing, and a filter component. The first housing includes a first docking portion and a first socket portion; the second housing includes a second docking portion and a second socket portion. The first docking portion is in snap-fit with the second docking portion to form a cavity between the first socket portion and the second socket portion, and the cavity is isolated from the outside; the filter component is accommodated in the cavity.

[0005] In a specific embodiment, the first housing and the second housing further include a welding portion, the welding portion is adjacent to the first docking portion and the second docking portion, and the welding portion is disposed on the side surface of the first housing and the second housing facing away from the cavity.

[0006] In a specific embodiment, the welding portion is formed by rotary welding, ultrasonic welding, hot melt welding, and / or friction welding.

[0007] In a specific embodiment, one of the first docking portion and the second docking portion is a hook, and the other is a slot, and the hook is embedded in the slot to dock the first socket portion and the second socket portion.

[0008] In a specific embodiment, the hook is disposed at one end of the first socket portion facing the second socket portion, and the slot is disposed on the side surface of the second socket portion facing the inside of the cavity, and the hook extends into the second socket portion and is relatively fixed with the slot.

[0009] In a specific embodiment, the filter element further includes an elastic sealing member, and the elastic sealing member is pressed between the first docking portion and the second docking portion.

[0010] In a specific embodiment, the filter assembly includes a reverse osmosis membrane, which is cylindrical, and the outer cylindrical wall of the reverse osmosis membrane is connected to the cavity. The fluid in the cavity penetrates into the reverse osmosis membrane through the outer cylindrical wall. The reverse osmosis membrane is also provided with a water outlet, and the fluid passing through the outer cylindrical wall is output from the cavity through the water outlet.

[0011] In a specific embodiment, the first shell is formed with an input channel, an output channel and a waste liquid channel, the input channel and the waste liquid channel are connected through the cavity, the output channel is connected to the water outlet, and the output channel and the water outlet are isolated from the cavity by the reverse osmosis membrane.

[0012] In a specific embodiment, the filter element further includes a diaphragm, which is sleeved on the outer periphery of the reverse osmosis membrane and docked with the input channel, output channel, and waste liquid channel. The cavity is formed on the side of the diaphragm away from the first docking portion and the second docking portion.

[0013] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a fluid processing device, comprising a filter element as described in any one of the embodiments of claims 1-9.

[0014] The beneficial effects of the present application include: by setting a first docking portion in the first shell and a second docking portion in the second shell, and utilizing the matching relationship between the first docking portion and the second docking portion, the cavity formed by the first shell and the second shell is isolated from the outside world, so that the filter component arranged in the cavity is not contaminated by the external environment, and the snap-fitting method will not cause pollution in the cavity, which can improve the availability of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the implementation. Obviously, the drawings described below are some implementations of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of a filter element provided by the present utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of section A-A';

[0018] Figure 3 is Figure 2 the enlarged structural schematic diagram of area B in

[0019] Figure 4 the exploded structural schematic diagram of another embodiment of the filter element provided by the present utility model;

[0020] Figure 5 the structural schematic diagram of still another embodiment of the filter element provided by the present utility model;

[0021] Figure 6 is Figure 5 the enlarged structural schematic diagram of area C in

[0022] Explanation of reference numerals:

[0023] 1. Filter element; 2. First housing; 21. First socket part; 22. First docking part; 23. Water inlet; 24. Output channel; 25. Card slot; 26. Waste liquid channel; 27. Fixed ring; 3. Second housing; 31. Second socket part; 32. Second docking part; 33. Hook; 4. Cavity; 5. Filter component; 51. Reverse osmosis membrane; 52. Water outlet; 6. Welding part; 7. Elastic seal; 8. Diaphragm. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] The terms "first", "second", etc. in the specification and claims of the present utility model and the above accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0026] References herein to "embodiments" or "implementations" mean that the specific features, structures, or characteristics described in connection with the embodiments or implementations can be included in at least one embodiment of the present invention. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0027] As a structure for processing fluids, once the filter component is contaminated, it will affect the quality of the output fluid. Therefore, a housing is usually provided outside the filter element, and an accommodating cavity for accommodating the filter component and isolated from the outside can be formed inside the housing, so that the filter component can only come into contact with the substances input from the outside when it officially starts working, thereby playing a protective role.

[0028] However, due to the installation requirements of the filter component, the housing is generally divided into multiple parts, and the multiple parts of the housing need to be relatively fixed by connecting means before they can play the role of closing the accommodating cavity and protecting the filter component. The currently common connecting means is generally welding. However, due to the limitations of the welding process itself, it is inevitable to leave substances such as welding slag and polluting gases in the accommodating cavity, and these substances may still contaminate the filter component.

[0029] In order to improve or solve the above technical problems, the inventors of the present application have conducted long-term research and proposed at least the following embodiments.

[0030] Refer to Figures 1 to 3 , Figure 1 which is a schematic assembly structure diagram of an embodiment of a filter element provided by the present invention. Figure 2 For Figure 1 is a schematic cross-sectional structure diagram of the A-A' cross-section in . Figure 3 For Figure 2 is an enlarged structure diagram of the B area in . This embodiment provides a filter element (1) that can process the fluid flowing into the filter element (1) and output the processed fluid. The filter element (1) includes a first housing (2), a second housing (3), and a filter component (5). The first housing (2) includes a first docking portion (22) and a first socket portion (21), the second housing (3) includes a second docking portion (32) and a second socket portion (31), the first docking portion (22) can be snap-fitted with the second docking portion (32), and an accommodating cavity (4) is formed between the first socket portion (21) and the second socket portion (31), and the accommodating cavity (4) is isolated from the outside. The filter component (5) is accommodated in the accommodating cavity (4).

[0031] Using the structure provided in this embodiment, a cavity (4) can be formed by the first socket part (21) and the second socket part (31), and the first housing (2) and the second housing (3) can be relatively fixed by the first docking part (22) and the second docking part (32), so that the cavity (4) can be isolated from the outside before the filter element (1) is put into use, thereby protecting the filter assembly (5) accommodated in the cavity (4) and reducing the probability of the filter assembly (5) being contaminated.

[0032] Optionally, one of the first docking part (22) and the second docking part (32) can be a hook (33), and the other can correspondingly be a slot (25). The hook (33) is embedded in the slot (25) to achieve the snap - connection and fixation of the first docking part (22) and the second docking part (32), thereby docking the first socket part (21) and the second socket part (31).

[0033] Specifically, the first docking part (22) can include a hook (33), the second docking part (32) can include a slot (25). The hook (33) and the slot (25) can be made of a rigid material with a certain elastic deformation ability, such as rigid plastic, alloy, etc. The hook (33) can be arranged at one end of the first socket part (21) facing the second socket part (31), and the slot (25) can be arranged on the inner - side surface of the second socket part (31) facing the cavity (4). The hook (33) is relatively fixed to the slot (25) by penetrating into the second socket part (31). During the docking process of the first housing (2) and the second housing (3), the hook (33) can undergo slight deformation under the pressing action of the second socket part (31), so as to penetrate into the second socket part (31). While being embedded in the slot (25), the hook (33) is pressed against the inner wall of the slot (25) under the promotion of the deformation, thereby relatively fixing the first housing (2) and the second housing (3).

[0034] Optionally, the number of the hooks (33) and the slots (25) can be multiple. The multiple hooks (33) are evenly arranged around the cavity (4), which can improve the connection stability between the first housing (2) and the second housing (3) and is beneficial to the sealing of the cavity (4).

[0035] Refer to Figure 2 、 3 、5, 6, Figure 5 which is a schematic structural diagram of another embodiment of the filter element provided by the present utility model. Figure 6 For Figure 5Schematic diagram of the enlarged structure of region C. The filter element (1) may further include an elastic seal (7), and the elastic seal (7) can abut between the first docking portion (22) and the second docking portion (32). The elastic seal (7) undergoes elastic deformation under the pressure of the first docking portion (22) and the second docking portion (32), so as to abut between the first docking portion (22) and the second docking portion (32), seal the joint between the first docking portion (22) and the second docking portion (32), thereby improving the isolation effect between the cavity (4) and the outside world.

[0036] Specifically, for Figure 3 the illustrated embodiment, the elastic seal (7) abuts between the hook (33) and the slot (25). During the process of the hook (33) being inserted into the slot (25), the surface of the hook (33) facing the slot (25) contacts the elastic seal (7) and compresses the elastic seal (7) into the slot (25). Due to material limitations, there may be a gap between the hook (33) and the slot (25). When the filter assembly (5) is not in use, external impurities such as dust and microorganisms may enter the cavity (4) through this gap, resulting in contamination of the filter assembly (5) inside the cavity (4). After fluid is introduced into the cavity (4), the fluid may seep out through the gap between the hook (33) and the slot (25) under the action of pressure, causing the fluid to leak to the outside and preventing the normal progress of the filtration process. Therefore, when the elastic seal (7) is disposed in the gap between the hook (33) and the slot (25), the sealing performance of the cavity (4) can be effectively improved, and the probability of abnormal situations can be reduced.

[0037] Furthermore, the first housing (2) and the second housing (3) further include a welding portion (6). The welding portion (6) is adjacent to the first docking portion (22) and the second docking portion (32), and the welding portion (6) is disposed on the surface of the first housing (2) and the second housing (3) facing away from the cavity (4). In the structure provided in this embodiment, the connection between the first docking portion (22) and the second docking portion (32) is further strengthened by welding, and this connection is disposed on the side of the first housing (2) and the second housing (3) facing away from the cavity (4). Under the isolation of the first housing (2) and the second housing (3), the gases and substances generated by welding will not fall into the cavity (4), thereby reducing the probability of contaminating the filter assembly (5).

[0038] For Figure 3 the illustrated embodiment, the welding portion (6) may specifically be disposed corresponding to the gap at the docking portion of the hook (33) and the slot (25), so as to seal the gap on the side of the first housing (2) and the second housing (3) facing the outside world, and further improve the sealing performance of the cavity (4).

[0039] Specifically, the welding part (6) can be formed by rotational welding, ultrasonic welding, hot melt welding, and / or friction welding, so that the welding part (6) has reliable structural strength and can effectively achieve the purpose of strengthening the connection between the first docking part (22) and the second docking part (32).

[0040] Referring to Figure 5 , in the illustrated embodiment, the second socket part (31) is sleeved on the outer periphery of the first socket part (21), and the inner diameter of the second socket part (31) is slightly larger than the outer diameter of the first socket part (21), so as to improve the relative fixing effect between the first housing (2) and the second housing (3). And the illustrated first docking part (22) is arranged on the side of the first socket part (21) away from the cavity (4), and the cavity (4) can be further isolated from the first docking part (22) and the second docking part (32) by using the first socket part (21), so as to improve the sealing effect of the cavity (4) and also reduce the influence of the welding part (6) on the cavity (4); at the same time, when the fluid in the cavity (4) has a large pressure, the probability that the connection relationship between the first docking part (22) and the second docking part (32) is damaged by the pressure can also be reduced.

[0041] Furthermore, referring to Figure 6 , a first docking part (22) can also be provided at the position of the first socket part (21) facing the inner wall of the second socket part (31), and a second docking part (32) can also be correspondingly provided on the inner wall of the second socket part (31). An elastic seal (7) can be provided between the first docking part (22) and the second docking part (32) to further improve the stability of isolating the cavity (4) from the outside.

[0042] The filter assembly (5) provided in this application can also include a reverse osmosis membrane (51), and the reverse osmosis membrane (51) is in a cylindrical shape. Moreover, the outer peripheral wall of the reverse osmosis membrane (51) faces the inside of the cavity (4), so that the fluid in the cavity (4) can penetrate into the reverse osmosis membrane (51) through the outer peripheral wall. The reverse osmosis membrane (51) is also provided with a water outlet (52), and the fluid passing through the outer peripheral wall can be output from the cavity (4) through the water outlet (52). Through the structure provided in this embodiment, the filter assembly (5) can use the reverse osmosis membrane (51) to process the input fluid and discharge the processed fluid from the cavity (4) through the water outlet (52) of the reverse osmosis membrane (51).

[0043] Specifically, the first housing (2) is formed with an input channel (23), an output channel (24), and a waste liquid channel (26). The input channel (23) and the waste liquid channel (26) communicate with the cavity (4). The output channel (24) is docked with the water outlet (52), and the output channel (24) and the water outlet (52) are isolated from the cavity (4) by a reverse osmosis membrane (51). It should be noted that the output channel (24) and the water outlet (52) are isolated from the cavity (4) by the reverse osmosis membrane (51). Part of the fluid filtered by the reverse osmosis membrane (51) can enter the output channel (24) through the water outlet (52) without contacting the fluid in the cavity (4), avoiding the pollution of the treated fluid by the untreated fluid.

[0044] Among them, the input channel (23) and the waste liquid channel (26) can be specifically located at both ends of the cavity (4). The input channel (23) can be used to introduce fluid into the cavity (4) so that the fluid to be treated can contact the outer peripheral wall of the reverse osmosis membrane (51). Under the action of the reverse osmosis membrane (51), part of the fluid in the cavity (4) seeps into the filter assembly (5) through the outer peripheral wall, and then can be output from the cavity (4) through the output channel (24). The part of the fluid that fails to seep into the filter assembly (5) flows out through the waste liquid channel (26) at the other end of the cavity (4) after passing through the cavity (4).

[0045] Refer to Figure 4 , Figure 4 which is an exploded structural schematic diagram of another embodiment of the filter element provided by the present invention. The filter element (1) may further include a diaphragm (8). The diaphragm (8) is sleeved on the outer periphery of the reverse osmosis membrane (51) and is docked with the input channel (23), the output channel (24), and the waste liquid channel (26). Among them, the cavity (4) is formed on the side of the diaphragm (8) facing away from the first docking portion (22) and the second docking portion (32).

[0046] By covering the outer periphery of the reverse osmosis membrane (51) of the filter element (1) with the diaphragm (8), a cavity (4) is formed between the diaphragm (8) and the reverse osmosis membrane (51), thereby isolating the surfaces of the first housing (2) and the second housing (3) facing the cavity (4) from the outer periphery of the reverse osmosis membrane (51), so that the docking portion of the first docking portion (22) and the second docking portion (32) cannot directly contact the fluid flowing through the cavity (4), avoiding the pollution of the fluid flowing through the cavity (4) by the first housing (2) and the second housing (3).

[0047] Specifically, the filter element (1) may further include a fixing ring (27), and the fixing ring (27) can be relatively fixed to the first housing (2). When the filter assembly (5) is disposed in the cavity (4), the fixing ring (27) is sleeved on the side of the diaphragm (8) facing away from the cavity (4) corresponding to the input channel (23), the output channel (24), and the waste liquid channel (26), and is fixed to the inner wall of the first socket part (21) facing the cavity (4), so that the diaphragm (8) is clamped between the fixing ring (27) and the inner wall of the first socket part (21) facing the cavity (4), thereby docking the diaphragm (8) with the input channel (23), the output channel (24), and the waste liquid channel (26) to achieve the sealing of the cavity (4).

[0048] Optionally, the form of the relative fixation between the fixing ring (27) and the first housing (2) may be magnetic attraction and / or snap connection. Or the outer diameter of the fixing ring (27) is close to the inner diameter of the first socket part (21), so that the outer periphery of the fixing ring (27) abuts against the inner wall of the first socket part (21) to achieve the relative fixation between the two.

[0049] The present application also provides an embodiment of a fluid processing device, including the filter element (1) described in any of the above embodiments. The fluid processing device can use the filter element (1) to process the input fluid and output the fluid processed by the filter element (1). In addition to the filter element (1), the fluid processing device may further include a filter element base. The filter element base may be provided with three fluid passages isolated from each other corresponding to the input channel (23), the output channel (24), and the waste liquid channel (26), and the three fluid passages are respectively docked with the input channel (23), the output channel (24), and the waste liquid channel (26) to assist the filter element (1) in working.

[0050] After a period of use, the processing ability of the filter element (1) for the fluid may decrease. Therefore, the filter element (1) and the filter element base can be detachably docked, so as to timely remove the old filter element (1) with insufficient processing ability and dock a new filter element (1) with the filter element base, avoiding the influence of the aging of the filter element (1) on the working efficiency of the fluid processing device and improving the usability of the fluid processing device.

[0051] In the present utility model, reference to "embodiment" or "implementation manner" means that the specific features, structures or characteristics described in connection with an embodiment may be included in at least one embodiment of the present utility model. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in the present utility model may be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the embodiments of the present utility model may be combined arbitrarily with each other without contradiction to form another embodiment that does not depart from the spirit and scope of the technical solution of the present utility model.

[0052] Finally, it should be noted that the above implementation manners are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the above preferred implementation manners, those of ordinary skill in the art should understand that the technical solutions of the present utility model may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A filter element (1), characterized in that, Comprising: A first housing (2), including a first docking portion (22) and a first socket portion (21); A second housing (3), including a second docking portion (32) and a second socket portion (31), wherein the first docking portion (22) is snap-fitted with the second docking portion (32) to form a cavity (4) between the first socket portion (21) and the second socket portion (31), and the cavity (4) is isolated from the outside; A filter assembly (5), accommodated in the cavity (4).

2. The filter element (1) according to claim 1, characterized in that One of the first docking portion (22) and the second docking portion (32) is a catch (33), and the other is a slot (25), and the catch (33) is embedded in the slot (25) to dock the first socket portion (21) and the second socket portion (31).

3. The filter element (1) according to claim 2, characterized in that The catch (33) is provided at one end of the first socket portion (21) facing the second socket portion (31), the slot (25) is provided on a surface of the second socket portion (31) facing the inside of the cavity (4), and the catch (33) extends into the second socket portion (31) and is relatively fixed to the slot (25).

4. The filter element (1) according to claim 1, characterized in that The filter element (1) further includes an elastic seal (7), and the elastic seal (7) abuts between the first docking portion (22) and the second docking portion (32).

5. The filter element (1) according to claim 1, characterized in that, The filter assembly (5) includes: A reverse osmosis membrane (51), the reverse osmosis membrane (51) is cylindrical, and the outer peripheral wall of the reverse osmosis membrane (51) faces the inside of the cavity (4), and the fluid in the cavity (4) seeps into the reverse osmosis membrane (51) through the outer peripheral wall, and the reverse osmosis membrane (51) is also provided with a water outlet (52), and the fluid passing through the outer peripheral wall is output from the cavity (4) through the water outlet (52).

6. The filter element (1) according to claim 5, characterized in that The first housing (2) is formed with an input channel (23), an output channel (24) and a waste liquid channel (26), the input channel (23) and the waste liquid channel (26) are communicated through the cavity (4), the output channel (24) is docked with the water outlet (52), and the output channel (24), the water outlet (52) are isolated from the cavity (4) through the reverse osmosis membrane (51).

7. The filter element (1) according to claim 6, characterized in that The filter element (1) further includes a diaphragm (8), the diaphragm (8) is sleeved on the outer periphery of the reverse osmosis membrane (51) and is docked with the input channel (23), the output channel (24), the waste liquid channel (26), and the cavity (4) is formed on a side of the diaphragm (8) facing away from the first docking portion (22) and the second docking portion (32).

8. The filter element (1) according to claim 1, characterized in that The first housing (2) and the second housing (3) further include a welding portion (6), the welding portion (6) is adjacent to the first docking portion (22) and the second docking portion (32), and the welding portion (6) is disposed on a surface of the first housing (2) and the second housing (3) facing away from the cavity (4).

9. The filter element (1) according to claim 8, wherein The welding portion (6) is formed by rotational welding, ultrasonic welding, hot melt welding and / or friction welding.

10. A fluid processing device, characterized in that, Comprising the filter element (1) according to any one of claims 1-9.

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