Filter element structure with detachable filter screen and pre-filter

Abstract

The filter element structure comprises a filter element framework, a filter element end cover and the filter screen, the filter screen is arranged on the periphery of the filter element framework in a sleeved mode, a limiting mechanism for limiting axial movement of the filter screen is arranged between the filter element framework and the filter screen, and the filter element end cover is detachably connected with the filter element framework. The filter element end cover can further limit the filter screen and is provided with a channel for raw water to flow through. The structure of the filter element is optimized, and the filter screen can be conveniently detached, so that the filter screen is cleaned, the filtering effect is improved, and the filtering flux is ensured; when the filter screen is locally blocked or damaged by metal filings or impurities, the filter screen can be conveniently and independently replaced, and the replacement cost is low.

Description

Technical Field

[0001] The utility model relates to a filter element structure with a detachable filter screen and a pre-filter, belonging to the technical field of water purification equipment. Background Art

[0002] Municipal tap water suffers from secondary contamination such as pipe corrosion and sediment, which degrades household water quality. Pre-filters are often installed on household pipes to improve water quality. Currently, pre-filter cartridges on the market primarily utilize a mesh-type structure. Cleaning methods include forward flushing, backwashing, siphon cleaning, or brushing. However, mesh-type cartridges are difficult to clean, especially with automatic flushing or brushing. This results in a short service life and high user costs.

[0003] Furthermore, the filter element of the existing pre-filter is typically an integrated filter screen and filter element frame, with both ends of the filter screen sealed by injection molding. This has the following drawbacks: 1) the filter screen is difficult to clean, which affects the filtration effect and filtration flux; 2) when the filter screen is partially clogged or damaged by metal chips or impurities, the filter screen cannot be replaced alone, requiring the entire filter element to be replaced, which is costly. The present utility model aims to address the aforementioned technical problems and provides a filter element structure and pre-filter with a detachable filter screen. Utility Model Content

[0004] One of the purposes of this utility model is to address the shortcomings of existing pre-filter cartridges by providing a filter cartridge structure and pre-filter with a detachable filter screen. The optimized filter cartridge structure allows for easy removal and cleaning of the filter screen, improving filtration efficiency and ensuring filtration throughput. If the filter screen becomes partially clogged or damaged by metal shavings or impurities, it can be easily and cost-effectively replaced.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The filter element structure with a detachable filter screen includes a filter element frame, a filter element end cover and a filter screen. The filter screen is sleeved on the outer periphery of the filter element frame. A limiting mechanism for limiting the axial movement of the filter screen is provided between the filter element frame and the filter screen. The filter element end cover is detachably connected to the filter element frame. The filter element end cover can further limit the filter screen. The filter element end cover is provided with a channel for raw water to flow through.

[0007] Preferably, a support ring is provided at the upper end and / or lower end of the filter screen, the inner diameter of the support ring is adapted to the filter screen, and the support ring is made of inert material, including plastic, rubber and stainless steel.

[0008] Preferably, a protrusion is provided at the bottom end of the filter frame, and the end surface of the lower end of the filter abuts against the protrusion to achieve axial limitation.

[0009] Preferably, the raised portion is arranged circumferentially along the bottom end of the filter frame.

[0010] Preferably, the filter element end cover includes an assembly portion and a limiting portion, and is detachably connected to the filter element frame through the assembly portion, and the upper end of the filter screen is limited by the limiting portion.

[0011] Preferably, the detachable connection method is any one of snap connection, screw connection and plug connection.

[0012] Preferably, the detachable connection adopts a rotating snap-in method, a card slot is provided on the upper end of the filter frame, a limiting protrusion or a limiting groove is provided on one side of the card slot, the filter element end cover is provided with an adaptive card block, and the card block is provided with an adaptive limiting groove or a limiting protrusion. After the filter frame and the filter element end cover are staggered and assembled, the angle is rotated and the limiting is achieved by the cooperation of the limiting groove and the limiting protrusion.

[0013] Preferably, the detachable connection adopts a rotating snap-in method, a card block is provided on the upper end of the filter frame, a limiting protrusion or a limiting groove is provided on one side of the card block, the filter element end cover is provided with an adaptive card slot, and the card slot is provided with an adaptive limiting groove or a limiting protrusion. After the filter frame and the filter element end cover are staggered and assembled, the angle is rotated and the limiting is achieved by the cooperation of the limiting groove and the limiting protrusion.

[0014] Preferably, a sealing element is provided between the filter element skeleton and the filter screen.

[0015] A pre-filter adopts the filter element structure with detachable filter screen mentioned above.

[0016] The beneficial effects of the utility model are: the filter element structure is optimized, the filter screen can be easily disassembled, and then the filter screen can be cleaned, thereby improving the filtering effect and ensuring the filtering flux; when the filter screen is partially blocked or damaged by metal chips or impurities, it is very convenient to replace the filter screen separately, and the replacement cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the filter element structure of the utility model;

[0018] Figure 2 This is an exploded view of the filter element structure of the utility model;

[0019] Figure 3 This is an exploded view of the filter element structure of the utility model;

[0020] Figure 4 It is a cross-sectional view of the filter element structure of the utility model;

[0021] Figure 5 It is a cross-sectional view of the filter element structure of the utility model;

[0022] Figure 6 It is a cross-sectional view of the filter element structure of the utility model;

[0023] Figure 7 It is a schematic diagram of the filter element structure of the utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the pre-filter of the utility model;

[0025] Figure 9 It is a cross-sectional view of the pre-filter of the utility model.

[0026] In the figure: 1. filter frame, 1a. raised part, 1b. slot, 2. filter element end cover, 2a. assembly part, 2a-1 block, 2b. limit part, 3. filter, 4. support ring, 5. sealing ring, 6. machine head, 7. filter bottle. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be further described below with reference to specific embodiments and in conjunction with the accompanying drawings. Example

[0028] like Figure 1-9 As shown, the filter element structure with a detachable filter screen includes a filter element frame 1, a filter element end cover 2 and a filter screen 3. The filter screen 3 is sleeved on the outer periphery of the filter element frame 1. A limiting mechanism for limiting the axial movement of the filter screen 3 is provided between the filter element frame 1 and the filter screen 3. The filter element end cover 2 is detachably connected to the filter element frame 1. The filter element end cover 2 can further limit the filter screen 3. The filter element end cover 2 is provided with a channel for raw water to flow through.

[0029] In this embodiment, a support ring 4 is provided at the upper end and / or the lower end of the filter 3. The inner diameter of the support ring 4 is adapted to the filter 3. The support ring 4 is made of inert material. The inert material includes plastic, rubber and stainless steel. In actual processing, conventional selection can be made according to needs, and plastic or stainless steel is generally selected.

[0030] In this embodiment, in order to achieve axial limitation of the filter 3, a protrusion 1a is provided at the bottom end of the filter frame 1, and the end face of the lower end of the filter 3 abuts against the protrusion 1a to achieve axial limitation. Specifically, the limitation is achieved by abutting the lower end face of the support ring 4 against the protrusion 1a.

[0031] In order to achieve uniform circumferential limitation, the raised portion 1a is arranged circumferentially along the bottom end of the filter frame 1. It can be evenly arranged at intervals or arranged circumferentially as an integrated ring. Its main purpose is to allow the lower end face of the support ring 4 to be evenly supported.

[0032] In this embodiment, the filter element end cover 2 includes an assembly portion 2a and a limiting portion 2b. The assembly portion 2a is detachably connected to the filter element frame 1, and the limiting portion 2b limits the upper end of the filter screen 3.

[0033] As for the detachable connection mode, there are multiple options, and the detachable connection mode is any one of a snap connection, a screw connection, and a plug connection.

[0034] In this embodiment, the detachable connection adopts a rotating snap-in method, and a snap slot 1b is provided at the upper end of the filter frame 1, and a limiting protrusion or a limiting groove is provided on one side of the snap slot 1b. The filter element end cover 2 is provided with an adaptive clamping block 2a-1, and the clamping block 2a-1 is provided with an adaptive limiting groove or a limiting protrusion. After the filter frame 1 and the filter element end cover 2 are staggered and assembled, the angle is rotated and the limiting is achieved by the cooperation of the limiting groove and the limiting protrusion.

[0035] In order to achieve sealing between the filter screen 3 and the filter element frame 1, a sealing element is provided between the filter element frame 1 and the filter screen 2, specifically, a sealing ring 5 is provided at the upper and lower ends.

[0036] A pre-filter comprises a head 6 and a filter bottle 7, and adopts the filter element structure with a detachable filter screen as described above.

[0037] The beneficial effects of the utility model are: the filter element structure is optimized, the filter screen can be easily disassembled, and then the filter screen can be cleaned, thereby improving the filtering effect and ensuring the filtering flux; when the filter screen is partially blocked or damaged by metal chips or impurities, it is very convenient to replace the filter screen separately, and the replacement cost is low.

[0038] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solution described in the claims. For example, the detachable connection adopts a rotating clamping method. The upper end of the filter frame 1 is provided with a clamping block, and one side of the clamping block is provided with a limiting protrusion or limiting groove. The filter element end cover 2 is provided with an adaptive clamping slot, and the clamping slot is provided with an adaptive limiting groove or limiting protrusion. After the filter frame 1 and the filter element end cover 2 are staggered and assembled, they are rotated at an angle, and the limiting is achieved by the cooperation of the limiting groove and the limiting protrusion.

Claims

1. The filter element structure with detachable filter screen includes a filter element frame, a filter element end cover and a filter screen, and is characterized by: The filter screen is sleeved on the outer periphery of the filter element frame, and a limiting mechanism for limiting the axial movement of the filter screen is provided between the filter element frame and the filter screen. The filter element end cover is detachably connected to the filter element frame, and the filter element end cover can further limit the filter screen. The filter element end cover is provided with a channel for raw water to flow through.

2. The filter element structure with a detachable filter screen according to claim 1, characterized in that: A support ring is provided on the upper end and / or the lower end of the filter screen. The inner diameter of the support ring is adapted to the filter screen. The support ring is made of inert materials, including plastic, rubber and stainless steel.

3. The filter element structure with a detachable filter screen according to claim 2, characterized in that: A protrusion is provided at the bottom end of the filter frame, and the end surface of the lower end of the filter abuts against the protrusion to achieve axial limitation.

4. The filter element structure with a detachable filter screen according to claim 3, characterized in that: The protrusion is arranged along the circumference of the bottom end of the filter frame.

5. The filter element structure with a detachable filter screen according to claim 1, characterized in that: The filter element end cover includes an assembly part and a limiting part. The assembly part is detachably connected to the filter element frame, and the limiting part limits the upper end of the filter screen.

6. The filter element structure with a detachable filter screen according to claim 5, characterized in that: The detachable connection mode is any one of a snap connection, a screw connection, and a plug connection.

7. The filter element structure with a detachable filter screen according to claim 6, characterized in that: The detachable connection adopts a rotating card connection method. A card slot is provided at the upper end of the filter frame, and a limiting protrusion or a limiting groove is provided on one side of the card slot. The filter element end cover is provided with an adaptive card block, and the card block is provided with an adaptive limiting groove or a limiting protrusion. After the filter frame and the filter element end cover are staggered and assembled, the angle is rotated and the limiting is achieved by the cooperation of the limiting groove and the limiting protrusion.

8. The filter element structure with a detachable filter screen according to claim 6, characterized in that: The detachable connection adopts a rotating card connection method. A card block is provided at the upper end of the filter frame, and a limiting protrusion or a limiting groove is provided on one side of the card block. The filter element end cover is provided with an adaptive card slot, and the card slot is provided with an adaptive limiting groove or a limiting protrusion. After the filter frame and the filter element end cover are staggered and assembled, the angle is rotated and the limiting is achieved by the cooperation of the limiting groove and the limiting protrusion.

9. The filter element structure with a detachable filter screen according to claim 1, characterized in that: A sealing element is provided between the filter element frame and the filter screen.

10. A pre-filter, characterized in that: The filter element structure with a detachable filter screen as described in any one of claims 1 to 9 is adopted.

Images