Double-shell-layer type filter element assembly

Abstract

The utility model discloses a double-shell layer type filter element assembly which comprises a filter element, and the filter element comprises an aluminum alloy outer shell, a filter element body arranged in the aluminum alloy outer shell, and a plastic inner shell arranged between the filter element body and the aluminum alloy outer shell and used for sealing and isolating the filter element body and the aluminum alloy outer shell. According to the double-shell type filter element assembly disclosed by the utility model, the aluminum alloy outer shell and the plastic inner shell are arranged, so that the aluminum alloy outer shell plays a role in structural pressure bearing, and the plastic inner shell plays roles in sealing and isolating; and the inner side wall of the aluminum alloy shell can be effectively prevented from being sprayed by adopting a complex spraying process, so that the enterprise cost and the production convenience are effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of water purifiers, and in particular relates to a double-shell filter element assembly. Background Technology

[0002] The filter cartridge assembly mainly consists of a connector and a filter element, which in turn includes a housing, upper and lower end caps, and an outer shell. Existing outer shells are either made of pure plastic, requiring a very thick layer to provide structural support, or they are made of stainless steel or aluminum alloy. However, since aluminum alloy is used as the outer shell, a thin film needs to be coated inside to prevent metal ions from affecting the purified water, thus isolating the aluminum alloy from contact with the water source. Current coating processes are complex, have extremely high requirements, and require large-scale spraying equipment, which is not only time-consuming but also increases operating costs for businesses.

[0003] Therefore, there is an urgent need for a new type of filter element assembly that can use an aluminum alloy shell while avoiding the need for complex processes to coat the inner wall with a coating material. Utility Model Content

[0004] Purpose of the utility model: The technical problem to be solved by this utility model is to provide a double-shell filter element assembly. This filter element assembly uses aluminum alloy as the outer shell to play a structural pressure-bearing role, and can achieve a safe water purification environment without complicated spraying process, effectively reducing enterprise costs and production convenience.

[0005] Technical solution: The present invention provides a double-shell filter element assembly, which includes a filter element, an aluminum alloy outer shell, a filter element body disposed within the aluminum alloy outer shell, and a plastic inner shell disposed between the filter element body and the aluminum alloy outer shell to seal and isolate the filter element body and the aluminum alloy outer shell.

[0006] Furthermore, the thickness of the aluminum alloy outer shell used in this filter assembly can be 1-2mm, and the thickness of the plastic inner shell can be 1-2mm.

[0007] Furthermore, the filter element assembly uses a filter element body that includes filter media, and upper and lower end caps respectively located at both ends of the filter media.

[0008] Furthermore, the inner wall of the plastic inner shell of the filter element assembly is fitted to the outer wall of the upper and lower end caps, and a sealing ring is provided between the plastic inner shell and the upper and lower end caps.

[0009] Furthermore, the aluminum alloy shell of the filter element assembly is a hollow structure with a closed bottom, and its top is fixedly connected to the upper end cover.

[0010] Furthermore, the filter element assembly uses an aluminum alloy shell with a through-hole structure, and its top and bottom ends are fixedly connected to the upper end cover and the lower end cover, respectively.

[0011] Furthermore, the filter assembly also includes a connector for connecting the filter element, and a locking device disposed within the connector to enable a detachable connection between the filter element and the connector. Preferably, the locking device includes a sliding plate retaining cover having a central through hole and mounted on the bottom end of the connector, a button slider having a central through hole and slidably disposed between the connector and the sliding plate retaining cover, the button slider having grooves spaced apart on both sides of the central through hole, and an elastic element having one end placed on the connector and the other end connected to the tail end of the button slider.

[0012] Furthermore, the upper end cap of the filter element assembly is provided with a protrusion corresponding to the groove, and the surface of the groove that contacts the protrusion is an inclined surface.

[0013] Beneficial effects: Compared with the prior art, the advantages of this utility model are: the double-shell filter element assembly, by setting an aluminum alloy outer shell and a plastic inner shell, not only does the aluminum alloy outer shell play a structural pressure-bearing role, and the plastic inner shell plays a sealing and isolation role, but more importantly, the double-shell structure can effectively avoid the use of complicated spraying processes to spray the inner wall of the aluminum alloy outer shell, which effectively reduces enterprise costs and facilitates production. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the filter element of the filter element assembly of this utility model;

[0015] Figure 2 This is a schematic diagram of the connector structure of the filter element assembly of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the connector of the filter element assembly of this utility model. Figure 1 ;

[0017] Figure 4 This is a schematic diagram of the internal structure of the connector of the filter element assembly of this utility model. Figure 2 ;

[0018] Figure 5 This is a schematic diagram of the internal structure of the connector of the filter element assembly of this utility model. Figure 3 . Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] The double-shell filter element assembly of this utility model includes a filter element, a connector connected to the filter element, and a locking device disposed in the connector to enable the filter element and the connector to be connected in a separable manner.

[0021] Among them, such as Figure 1 As shown, the filter element of this utility model includes an aluminum alloy outer shell 1, a plastic inner shell 3, and a filter element body 2 arranged sequentially from the outside to the inside. The filter element body 2 consists of a filter material 4, an upper end cap 5, and a lower end cap 6 respectively disposed at both ends of the filter material 4. The thickness of the aluminum alloy outer shell 1 can be 1-2 mm, and the thickness of the plastic inner shell 3 can be 1-2 mm. The inner sidewalls of the plastic inner shell 3 are fitted to the outer sidewalls of the upper end cap 5 and the lower end cap 6 of the filter element body 2, and sealing rings are provided between the plastic inner shell 3 and the upper end cap 5 and the lower end cap 6 to form a sealed isolation.

[0022] The aluminum alloy outer shell 1 can be configured as a through-hole hollow structure or a hollow structure closed at one end. When a through-hole hollow structure is used, it is fitted onto the outer surface of the plastic inner shell 3 and is fixedly connected to the upper end cover 5 and the lower end cover 6. When a hollow structure closed at one end is used, that is, its bottom end is closed and its top end is open, it is fitted onto the outer surface of the plastic outer shell 3, and its top end is fixedly connected to the upper end cover 5 of the filter element. This fixed connection can be achieved by welding the aluminum alloy outer shell 1 with a spiral edge, using a threaded connection, or using a flange fixation. The specific method can be adapted according to the actual application requirements, and no specific limitation is made in this utility model.

[0023] The connector that comes with the filter element of this utility model has the following structure. Figures 2 to 5 As shown, either existing filter elements and connectors known in the art can be used. One type of connector is the one disclosed in application number 202222958040X, entitled "Modular Filter Element Assembly," and its structure is as follows: Figure 2 and Figure 3 As shown, the connector includes a locking device that allows for the detachable connection of the connector and the filter element. This locking device includes a slide plate fixing cover 7 at the bottom of the connector, and a button slider between the slide plate fixing cover 7 and the connector. The button slider includes an arc-shaped button slide plate 8 symmetrically arranged along the circumference of the connector. One end of the arc-shaped button slide plate 8 is connected to an elastic element 9, and the other end is connected to a slider 10. The other end of the arc-shaped button slide plate 8 contacts the two inclined sides of the slider 10. The slider 10 includes a wedge-shaped block 11 that contacts the other end of the arc-shaped button slide plate 8 and a connecting rod 12 at the tail end of the wedge-shaped block 11. Several grooves 13 are formed on the side of the arc-shaped button slide plate 8, and the upper end of the filter element has a protrusion corresponding to the groove. The surfaces where the grooves and protrusions contact are inclined, thus enabling their mating to form a filter element assembly.

[0024] Another type of connector is the one disclosed in application number 2022229602748, entitled "A Filter Element Assembly for Quick-Change Filter Elements," and its structure is as follows: Figure 4As shown, one end of the arc-shaped button slide plate 8 inside the connector is connected to the elastic element 9, and the other end is connected to the button push rod 15 through the connecting plate 14. The left and right swing of the arc-shaped button slide plate 8 is achieved by the button push rod 15. The button push rod 15 includes a connecting block 16 and a connecting rod 17. The connecting plate 14 is respectively disposed on the upper and lower sides of the connecting block 16. Several grooves 13 are formed on the side of the arc-shaped button slide plate 8. The upper end of the filter element is provided with a protrusion corresponding to the groove 13, and the contact surface between the groove 13 and the protrusion is an inclined surface, thereby realizing the cooperation between the two to form a filter element assembly.

[0025] Furthermore, the connector adapted to the filter element assembly of this utility model can also be the connector disclosed in application number 201621378691X, entitled "A Filter Device with Easily Replaceable Connector," with the following structure. Figure 5 As shown, the connector is equipped with a locking device to enable the connector and the filter element to be connected in a separable manner. The locking device has grooves 13 spaced apart on both sides of the central through hole of the button slider 18; and an elastic element 9 with one end placed on the connector and the other end connected to the tail end of the button slider 18. The upper end of the filter element is provided with a protrusion corresponding to the groove 13, and the filter element is connected and separated from the connector through the cooperation of the protrusion and the groove.

[0026] Furthermore, it should be noted that, corresponding to filter cartridge assemblies composed of different connector combinations, the water circuit configuration of the upper end cover of the double-shell filter cartridge assembly can be adaptively adjusted according to the water circuit configuration of the connector, or the filter cartridge water circuit purification method disclosed in application number 201621378691X, entitled "A Filter Device with Easy-to-Replace Connectors", is also not the focus of this utility model.

Claims

1. A double-shell filter element assembly, characterized in that: The filter assembly includes a filter element, which includes an aluminum alloy shell (1), a filter element body (2) disposed within the aluminum alloy shell (1), and a plastic inner shell (3) disposed between the filter element body (2) and the aluminum alloy shell (1) to seal and isolate the filter element body (2) and the aluminum alloy shell (1).

2. The double-shell filter element assembly according to claim 1, characterized in that: The thickness of the aluminum alloy outer shell (1) is 1-2 mm, and the thickness of the plastic inner shell (3) is 1-2 mm.

3. The double-shell filter element assembly according to claim 1, characterized in that: The filter body (2) includes filter material (4), and upper end cap (5) and lower end cap (6) respectively disposed at both ends of the filter material (4).

4. The double-shell filter element assembly according to claim 3, characterized in that: The inner walls of the plastic inner shell (3) are fitted to the outer walls of the upper end cover (5) and the lower end cover (6), and a sealing ring is provided between the plastic inner shell (3) and the upper end cover (5) and the lower end cover (6).

5. The double-shell filter element assembly according to claim 3, characterized in that: The aluminum alloy shell (1) is a hollow structure with a closed bottom, and its top is fixedly connected to the upper cover (5).

6. The double-shell filter element assembly according to claim 3, characterized in that: The aluminum alloy shell (1) is a through hollow structure, with its top and bottom ends fixedly connected to the upper end cover (5) and the lower end cover (6), respectively.

7. The double-shell filter element assembly according to claim 1, characterized in that: The filter assembly also includes a connector for connecting to the filter element, and a locking device disposed within the connector to enable detachable connection between the filter element and the connector.

8. The double-shell filter element assembly according to claim 7, characterized in that: The locking device includes a sliding plate fixing cover with a central through hole and installed at the bottom of the connector, a button slider with a central through hole and slidably disposed between the connector and the sliding plate fixing cover, the two sides of the central through hole of the button slider being provided with grooves at intervals, and an elastic element with one end placed on the connector and the other end connected to the tail end of the button slider.

9. The double-shell filter element assembly according to claim 8, characterized in that: The upper end cap (5) of the filter element is provided with a protrusion corresponding to the groove, and the surface of the groove that contacts the protrusion is an inclined surface.

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