Composite filter element structure and composite filter element assembly

Abstract

The composite filter element structure comprises a filter element shell, the filter element assembly, an upper end cover and a lower end cover, the lower end cover is provided with a waterway switching piece and comprises a source water inlet channel, a source water outlet channel, a pure water inlet channel and a pure water outlet channel, and the filter element assembly comprises a first filter element and a second filter element. The first filter element is arranged on the upper portion, the second filter element is arranged on the lower portion, the first filter element and the second filter element are separated through the middle separator, the middle separator is provided with a first water channel and a second water channel, and the source water inlet channel is communicated with a cavity of the outer wall of the first filter element through the first water channel. The source water outlet channel is communicated with the inner wall cavity of the first filtering element through the second water channel, the source water outlet channel is communicated with the pure water inlet channel, the pure water inlet channel is communicated with the outer wall cavity of the second filtering element, and the pure water outlet channel is communicated with the inner wall cavity of the second filtering element. The filter is simple in structure, and the size of an internal filter material can be larger with the same shell.

Description

Technical Field

[0001] This utility model relates to the field of water purification filter technology, specifically to a composite filter structure and composite filter assembly. Background Technology

[0002] Liquid filter cartridges clean contaminated liquids (including oil, water, etc.) to a state required for production and daily life, that is, to achieve a certain level of cleanliness.

[0003] Currently, most filter cartridges on the market are designed with a second water flow channel running through the outer wall, resulting in low space utilization, numerous small parts, and a complex structure, which can easily lead to multiple leakage points. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a composite filter element structure and a composite filter element assembly.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A composite filter element structure includes a filter element housing, a filter element assembly disposed within the filter element housing, and upper and lower end covers on both sides of the filter element housing. The lower end cover is provided with a water path switching component, which has a source water inlet channel, a source water outlet channel, a pure water inlet channel, and a pure water outlet channel. The filter element assembly includes a first filter element and a second filter element. The first filter element is disposed in the upper part of the inner cavity of the filter element housing, and the second filter element is disposed in the lower part of the inner cavity of the filter element housing. The first filter element and the second filter element are separated by an intermediate separator. The intermediate separator has a first water channel and a second water channel. The source water inlet channel communicates with the cavity between the outer wall of the first filter element and the filter element housing through the first water channel. The source water outlet channel communicates with the inner wall cavity of the first filter element through the second water channel. The source water outlet channel communicates with the pure water inlet channel. The pure water inlet channel communicates with the cavity between the outer wall of the second filter element and the filter element housing. The pure water outlet channel communicates with the inner wall cavity of the second filter element.

[0007] Preferably, the water circuit switching component includes a rotary valve, a support plate, and a center rod switching unit. The center rod switching unit includes a center rod body and a switching seat. The switching seat is rotatably adapted to the support plate and the rotary valve and is axially fixed. The lower end cover is provided with a center rod assembly hole, and the center rod body is rotatably and sealingly connected to the center rod assembly hole.

[0008] The end of the central rod body is provided with a first central rod water channel and a second central rod water channel that are adapted to the first water channel and the second water channel.

[0009] The source water inlet channel, source water outlet channel, pure water inlet channel, and pure water outlet channel are located on the assembly consisting of the switching seat, support plate, and rotary valve.

[0010] Preferably, the switching seat, support plate and rotary valve are each provided with a source water inlet, a source water outlet, a pure water inlet and a pure water outlet. After the three are combined, the source water inlet, source water outlet, pure water inlet and pure water outlet are connected to each other.

[0011] Preferably, the source water inlet, source water outlet, and pure water outlet of the switching seat are evenly distributed along the circumference and are shaped like waist-shaped holes, with the pure water inlet located on the outer side of the circumference of the switching seat.

[0012] Preferably, the center rod body and the switching seat are integrally formed.

[0013] Preferably, the water circuit switching component includes a pressure plate, which axially fixes the rotary valve.

[0014] Preferably, a sealing element is provided between the inner cavity of the filter cartridge housing and the first and second filter elements.

[0015] A composite filter assembly includes at least two connected composite filter structures, wherein the composite filter structure is the composite filter structure described in this utility model.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. It solves the problem of low space utilization, resulting in larger filter cartridges of the same size;

[0018] 2. Compared with traditional filter cartridges that allow water to pass through from the outside, the new filter cartridge of this application uses water to pass through from the middle, which effectively improves space utilization and allows for an increase in the size of the filter cartridge. Under the same shell size, the new filter cartridge has a longer service life, larger filter media, and higher water output rate.

[0019] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. The embodiments of this application will provide a detailed description and understanding of the application. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 for Figure 1 Exploded view;

[0022] Figure 3 This is an end view of the present invention;

[0023] Figure 4 for Figure 3 Longitudinal section of AA;

[0024] Figure 5 This is an end view of the present invention;

[0025] Figure 6 for Figure 5 Longitudinal section of BB (British-Balanced Section);

[0026] Figure 7 This is an end view of the present invention;

[0027] Figure 8 for Figure 7 Longitudinal section of the CC section;

[0028] Figure 9 This is a schematic diagram of the present invention;

[0029] Figure 10 This is a schematic diagram of the present invention;

[0030] Figure 11 This is an end view of the component of this utility model;

[0031] Figure 12 for Figure 3 Longitudinal section of DD;

[0032] Figure 13 This is an end view of the present invention;

[0033] Figure 14 for Figure 5 Longitudinal section of the EE.

[0034] In the diagram: 1. Filter cartridge housing; 2. Raw water inlet; 3. Raw water outlet; 4. Pure water inlet; 5. Pure water outlet; 6. First filter element; 7. Second filter element; 8. Intermediate separator; 9. Pressure plate; 10. Rotary valve; 11. Support plate; 12. Central rod body; 13. Switching seat; 14. Upper end cover; 15. Lower end cover; 16. Filter cartridge handle; A. Pure water outlet; B. Raw water outlet; C. Pure water inlet; D. Raw water inlet. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1-14This utility model provides a technical solution: a composite filter element structure, including a filter element housing 1, a filter element assembly disposed within the filter element housing 1, and upper end caps 14 and lower end caps 15 on both sides of the filter element housing 1. The lower end cap 15 is provided with a water circuit switching component, which has a source water inlet channel, a source water outlet channel, a pure water inlet channel, and a pure water outlet channel. The filter element assembly includes a first filter element 6 and a second filter element 7. The first filter element 6 is disposed in the upper part of the inner cavity of the filter element housing 1, and the second filter element 7 is disposed in the lower part of the inner cavity of the filter element housing 1. The first filter element 6 and the second filter element 7 are separated by an intermediate separator 8. The intermediate separator 8 is provided with a first water channel and a second water channel. The source water inlet channel is connected to the cavity between the outer wall of the first filter element 6 and the filter element housing 1 through the first water channel. The source water outlet channel is connected to the inner wall cavity of the first filter element 6 through the second water channel. The source water outlet channel is connected to the pure water inlet channel. The pure water inlet channel is connected to the cavity between the outer wall of the second filter element 7 and the filter element housing 1. The pure water outlet channel is connected to the inner wall cavity of the second filter element.

[0037] In this embodiment, the water circuit switching component includes a rotary valve 10, a support plate 11, and a central rod switching unit. The central rod switching unit includes a central rod body 12 and a switching seat 13. The switching seat 13 is rotatably adapted to the support plate 11 and the rotary valve 10 and is axially fixed. The lower end cover 15 is provided with a central rod assembly hole, and the central rod body 12 is rotatably and sealingly connected to the central rod assembly hole.

[0038] The end of the central rod body 12 is provided with a first central rod water channel and a second central rod water channel that are adapted to the first water channel and the second water channel.

[0039] The source water inlet channel, source water outlet channel, pure water inlet channel, and pure water outlet channel are located on the assembly consisting of the switching seat 13, the support plate 11, and the rotary valve 10.

[0040] Specifically, the switching seat 13, the support plate 11 and the rotary valve 10 are each provided with a source water inlet, a source water outlet, a pure water inlet and a pure water outlet. After the three are combined, the source water inlet, the source water outlet, the pure water inlet and the pure water outlet are connected to each other.

[0041] In this embodiment, the source water inlet, source water outlet and pure water outlet of the switching seat 13 are evenly distributed along the circumference and are shaped like waist-shaped holes. The pure water inlet is located on the outer side of the circumference of the switching seat 13.

[0042] In this embodiment, the central rod body 12 and the switching seat 13 are integrally formed.

[0043] In this embodiment, the water circuit switching component includes a pressure plate 9, which axially fixes the rotary valve 10.

[0044] In this embodiment, a sealing element is provided between the inner cavity of the filter cartridge housing and the first filter element 6 and the second filter element 7.

[0045] A composite filter assembly includes at least two connected composite filter structures, wherein the composite filter structure is the composite filter structure described in this utility model.

[0046] Compared with the prior art, the beneficial effects of this utility model are:

[0047] 1. It solves the problem of low space utilization, resulting in larger filter cartridges of the same size;

[0048] 2. Compared with traditional filter cartridges that allow water to pass through from the outside, the new filter cartridge of this application uses water to pass through from the middle, which effectively improves space utilization and allows for an increase in the size of the filter cartridge. Under the same shell size, the new filter cartridge has a longer service life, larger filter media, and higher water output rate.

[0049] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite filter element structure, characterized in that: The filter includes a filter housing, a filter assembly disposed within the filter housing, and upper and lower end covers on both sides of the filter housing. The lower end cover is provided with a water path switching component, which has a source water inlet channel, a source water outlet channel, a pure water inlet channel, and a pure water outlet channel. The filter assembly includes a first filter element and a second filter element. The first filter element is disposed in the upper part of the inner cavity of the filter housing, and the second filter element is disposed in the lower part of the inner cavity of the filter housing. The first filter element and the second filter element are separated by an intermediate separator. The intermediate separator has a first water channel and a second water channel. The source water inlet channel communicates with the cavity between the outer wall of the first filter element and the filter housing through the first water channel. The source water outlet channel communicates with the inner wall cavity of the first filter element through the second water channel. The source water outlet channel communicates with the pure water inlet channel. The pure water inlet channel communicates with the cavity between the outer wall of the second filter element and the filter housing. The pure water outlet channel communicates with the inner wall cavity of the second filter element.

2. The composite filter element structure according to claim 1, characterized in that: The water circuit switching component includes a rotary valve, a support plate, and a central rod switching unit. The central rod switching unit includes a central rod body and a switching seat. The switching seat is rotatably adapted to the support plate and the rotary valve and is axially fixed. The lower end cover is provided with a central rod assembly hole. The central rod body is rotatably and sealingly connected to the central rod assembly hole. The end of the central rod body is provided with a first central rod water channel and a second central rod water channel that are adapted to the first water channel and the second water channel. The source water inlet channel, source water outlet channel, pure water inlet channel, and pure water outlet channel are located on the assembly consisting of the switching seat, support plate, and rotary valve.

3. The composite filter element structure according to claim 2, characterized in that: The switching seat, support plate, and rotary valve are all equipped with a source water inlet, a source water outlet, a pure water inlet, and a pure water outlet. When the three are combined, the source water inlet, source water outlet, pure water inlet, and pure water outlet are connected to each other.

4. The composite filter element structure according to claim 3, characterized in that: The source water inlet, source water outlet, and pure water outlet of the switching base are evenly distributed along the circumference and are shaped like waist-shaped holes. The pure water inlet is located on the outer side of the circumference of the switching base.

5. The composite filter element structure according to claim 2, characterized in that: The central rod body and the switching seat are integrally formed.

6. A composite filter element structure according to claim 2, 3, 4, or 5, characterized in that: The water circuit switching component includes a pressure plate, which axially fixes the rotary valve.

7. A composite filter element structure according to claim 1, 2, 3, 4, or 5, characterized in that: A sealing element is provided between the inner cavity of the filter cartridge housing and the first and second filter elements.

8. A composite filter element assembly, characterized in that, The composite filter element structure includes at least two connected components, wherein the composite filter element structure is the composite filter element structure according to any one of claims 1-7.

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