Composite filter element with replaceable filter paper

Abstract

The utility model relates to the field of composite filter elements, and discloses a filter paper replaceable composite filter element which comprises a shell, a filter element body is arranged in the shell, filter paper is arranged on the outer wall of the filter element body, a bypass valve is arranged at one end of the filter element body, and a check valve is arranged at the other end of the filter element body. And supporting blocks are fixedly connected to the outer walls of the bypass valve and the check valve. According to the composite filter element with the replaceable filter paper, through the arrangement of the shell, the filter element body, the filter paper, the bypass valve, the check valve, a supporting block, a reset spring, a movable block, an end cover and a sealing ring, the function of conveniently replacing the filter paper is achieved, so that the problem that the filter paper is inconvenient to replace is solved, and after replacement is completed, pressure is conveniently applied to the filter paper; therefore, the filter paper is firmer after being mounted, and the problem that filtration is affected due to unstable filter paper mounting is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite filters, and particularly to a composite filter with replaceable filter paper. Background Technique

[0002] A filter element is a professional term for the function of filtration and purification. It is a simple device for purifying the resources of the original fluid and separating resources. With the continuous progress of technology, the types of filter elements are increasing, including composite filter elements.

[0003] When the existing composite filter element is in use, it is not convenient to quickly disassemble and assemble, so that the operation of replacing the filter paper is relatively cumbersome. Therefore, the existing composite filter element cannot meet the working needs of people and causes inconvenience to people's use. Content of the Utility Model

[0004] (1) Technical Problem Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a composite filter element with replaceable filter paper, which has the function of facilitating the replacement of the filter paper and solves the problems in the above background technique.

[0006] (2) Technical Solution

[0007] To achieve the above object, the utility model provides the following technical solution: A composite filter element with replaceable filter paper, including a housing, a filter element body is arranged inside the housing, a filter paper is arranged on the outer wall of the filter element body, a bypass valve is arranged at one end of the filter element body, a check valve is arranged at the other end of the filter element body, support blocks are fixedly connected to the outer walls of the bypass valve and the check valve, a return spring is fixedly connected to the outer wall of the support block, one end of the return spring is fixedly connected to a movable block, and an end cover is arranged on the outer wall of the housing. By providing the housing, the filter element body, the filter paper, the bypass valve, the check valve, the support block, the return spring, the movable block, the end cover and the sealing ring, the function of facilitating the replacement of the filter paper is realized, thus solving the problem of inconvenient replacement of the filter paper. And after the replacement is completed, it is convenient to apply pressure to the filter paper, so that the filter paper is more firmly installed after installation, and the problem that the unstable installation of the filter paper affects filtration is solved.

[0008] Furthermore, through holes are formed in the inner wall of the support block, and the size of the through holes in the inner wall of the support block is smaller than the size of the return spring, which facilitates the support of the return spring.

[0009] Furthermore, the movable block and the support block form a telescopic structure through the return spring, and the return spring is a compression spring, which facilitates the sliding of the movable block driven by the return spring.

[0010] Furthermore, the inner diameter of the return spring is larger than the outer diameter of the filter element body, facilitating the effective expansion and contraction of the return spring.

[0011] Furthermore, a through hole is provided in the inner wall of the movable block, and the movable block is slidably connected to the filter element body through the through hole, facilitating the pressing of the filter paper by the movable block.

[0012] Furthermore, there are two end caps, and threads are distributed on the inner walls of both end caps. The end caps are threadedly connected to the outer wall of the housing through the threads, facilitating the installation of the end caps.

[0013] Furthermore, a sealing ring is provided inside the end cap, and the sealing ring is an elastic ring structure, improving the sealing performance of the installation.

[0014] Beneficial Effects

[0015] Compared with the prior art, the present utility model provides a composite filter element for replaceable filter paper, having the following beneficial effects:

[0016] 1. The composite filter element for replaceable filter paper realizes the function of facilitating the replacement of the filter paper through the provided housing, filter element body, filter paper, bypass valve, check valve, support block, return spring, movable block, end cap and sealing ring, thus solving the problem of inconvenient replacement of the filter paper. And after the replacement is completed, it is convenient to press the filter paper, making the filter paper more firmly installed after installation, and solving the problem that the unstable installation of the filter paper affects the filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded structural schematic diagram of the present utility model;

[0018] Figure 2 is an overall structural schematic diagram of the present utility model;

[0019] Figure 3 is a side view structural schematic diagram of the present utility model;

[0020] Figure 4 is a front sectional structural schematic diagram of the present utility model.

[0021] In the figure: 1. Housing; 2. Filter element body; 3. Filter paper; 4. Bypass valve; 5. Check valve; 6. Support block; 7. Return spring; 8. Movable block; 9. End cap; 10. Sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1

[0024] The preferred embodiment of the composite filter element for replaceable filter paper provided by the present invention is as Figures 1 to 4 shown: A composite filter element for replaceable filter paper includes a housing 1. A filter element body 2 is arranged inside the housing 1. A filter paper 3 is arranged on the outer wall of the filter element body 2. A bypass valve 4 is arranged at one end of the filter element body 2, and a check valve 5 is arranged at the other end of the filter element body 2. Support blocks 6 are fixedly connected to the outer walls of the bypass valve 4 and the check valve 5. A return spring 7 is fixedly connected to the outer wall of the support block 6. One end of the return spring 7 is fixedly connected to a movable block 8. An end cover 9 is arranged on the outer wall of the housing 1. By providing the housing 1, the filter element body 2, the filter paper 3, the bypass valve 4, the check valve 5, the support block 6, the return spring 7, the movable block 8, the end cover 9 and the sealing ring 10, the function of facilitating the replacement of the filter paper 3 is realized, thus solving the problem of inconvenient replacement of the filter paper 3. And after the replacement is completed, it is convenient to apply pressure to the filter paper 3, so that the filter paper 3 is more firmly installed after installation, solving the problem that the unstable installation of the filter paper 3 affects the filtration.

[0025] Furthermore, through holes are formed in the inner wall of the support block 6, and the size of the through holes in the inner wall of the support block 6 is smaller than the size of the return spring 7, which facilitates the support of the return spring 7.

[0026] Furthermore, the movable block 8 and the support block 6 form a telescopic structure through the return spring 7, and the return spring 7 is a compression spring, which facilitates the sliding of the movable block 8 driven by the return spring 7.

[0027] Furthermore, the inner diameter of the return spring 7 is larger than the outer diameter of the filter element body 2, which facilitates the effective telescoping of the return spring 7.

[0028] Furthermore, through holes are formed in the inner wall of the movable block 8, and the movable block 8 is slidably connected to the filter element body 2 through the through holes, which facilitates the pressing of the filter paper 3 by the movable block 8.

[0029] Furthermore, there are two end covers 9, and threads are distributed on the inner walls of the two end covers 9, and the end covers 9 are threadedly connected to the outer wall of the housing 1 through the threads, which facilitates the installation of the end covers 9.

[0030] Furthermore, a sealing ring 10 is arranged inside the end cap 9, and the sealing ring 10 is an elastic ring structure, which improves the installation tightness.

[0031] During use, first rotate one end of the end cap 9 to separate it from the housing 1, then rotate the bypass valve 4 or the check valve 5 to separate it from the filter element body 2, thereby facilitating the disassembly of the filter paper 3. Then replace the filter paper 3 with a new one. Next, reinstall the bypass valve 4 or the check valve 5 to one end of the filter element body 2. After the support block 6 drives the movable block 8 to slide through the return spring 7, the movable block 8 presses the filter paper 3, thus solving the problem that the filter paper 3 is not firmly installed. Finally, reinstall the removed end cap 9 to the outer wall of the housing 1 through threads to complete a series of installation work.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0033] It should be noted that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0035] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite filter element for replaceable filter paper, comprising a housing (1), characterized in that: A filter element body (2) is arranged inside the housing (1), a filter paper (3) is arranged on the outer wall of the filter element body (2), a bypass valve (4) is arranged at one end of the filter element body (2), a check valve (5) is arranged at the other end of the filter element body (2), the outer walls of the bypass valve (4) and the check valve (5) are both fixedly connected to a support block (6), the outer wall of the support block (6) is fixedly connected to a return spring (7), one end of the return spring (7) is fixedly connected to a movable block (8), and an end cover (9) is arranged on the outer wall of the housing (1).

2. A composite filter element for replaceable filter paper according to claim 1, characterized in that: The inner wall of the support block (6) is provided with a through hole, and the size of the through hole in the inner wall of the support block (6) is smaller than the size of the return spring (7).

3. The composite filter element for replaceable filter paper according to claim 1, characterized in that: The movable block (8) forms a telescopic structure with the support block (6) through a return spring (7), and the return spring (7) is a compression spring.

4. The composite filter element for replaceable filter paper according to claim 1, characterized in that: The inner diameter of the return spring (7) is greater than the outer diameter of the filter element body (2).

5. The composite filter element for replaceable filter paper according to claim 1, characterized in that: The inner wall of the movable block (8) is provided with a through hole, and the movable block (8) is slidably connected to the filter element body (2) via the through hole.

6. The composite filter element for replaceable filter paper according to claim 1, characterized in that: Two end covers (9) are provided, and the inner walls of the two end covers (9) are both provided with threads, and the end covers (9) are connected to the outer wall threads of the housing (1) through the threads.

7. The composite filter element for replaceable filter paper according to claim 1, characterized in that: A sealing ring (10) is arranged inside the end cover (9), and the sealing ring (10) is an elastic annular structure.

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