Novel filtering check valve

Abstract

The utility model provides a filtering check valve, and belongs to the technical field of valves. The problem that after an existing filter screen is removed and cleaned, the sealing effect of the joint is easily affected is solved. The novel filtering check valve comprises a valve body, a water inlet end and a water outlet end are arranged on the valve body, a fixing piece is detachably connected to the upper end of the valve body, a fixing part is arranged in the water outlet end, a through hole is formed in the fixing part, a control valve element is arranged in the valve body, and a pressing cover is arranged in the fixing piece. A filter sleeve used for filtering is arranged in the valve body, a first connecting spring is arranged between the ejector rod and the filter sleeve, a second connecting spring is arranged on the control valve element in a sleeved mode, a fixing sleeve is further arranged in the valve body in a sleeved mode, the upper end of the filter sleeve is fixedly arranged on the fixing sleeve, and the lower end of the filter sleeve abuts against the valve body. And a filtering hole is formed in the lower end part of the filtering sleeve. The utility model has the advantage of long service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a valve, in particular to a novel filtering check valve. Background Art

[0002] Filter check valves are usually installed at the inlet of hydraulic control valves, pressure reducing valves, pressure relief valves, and water level control valves to remove impurities in the medium, prevent granular impurities from entering the channel and causing blockage, and protect the equipment on the pipeline. Of course, in daily life, new filter check valves can also be used to remove impurities in tap water and improve the quality of domestic water. After long-term use, the internal filter needs to be cleaned to prevent the retained impurities from affecting the effect of the filter and even causing damage to the filter. However, after the filter is dismantled and cleaned, it is easy to affect the sealing effect of its connection. Summary of the invention

[0003] The utility model aims to provide a novel filter check valve with a long service life in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a new type of filter check valve, including a valve body, the valve body is provided with a water inlet end and a water outlet end, characterized in that the upper end of the valve body is detachably connected with a fixing piece, the water outlet end is provided with a fixing part, the fixing part is provided with a through hole for liquid circulation, the valve body is provided with a control valve core for controlling the liquid circulation in the valve body, and the control valve core can move up and down in the valve body, the fixing piece is provided with a push rod for controlling the control valve core to move up and down and a pressing cover connected to the push rod, the valve body is provided with a filter sleeve for filtering, a connecting spring 1 is provided between the push rod and the filter sleeve, a connecting spring 2 is sleeved on the control valve core, a fixing sleeve is further sleeved in the valve body and at the lower end relative to the fixing part, the upper end of the filter sleeve is fixedly provided on the fixing sleeve, the lower end of the filter sleeve is abutted against the valve body, and the lower end of the filter sleeve is provided with a plurality of filter holes for filtering.

[0005] In the above-mentioned new type of filter check valve, a water retaining part is provided at the rear end of the control valve core, the rear end of the water retaining part is connected to the bottom of the fixed part, and the water retaining part is controlled to close or open the through hole by rising and falling of the control valve core, and the front end of the control valve core is connected to the push rod and is controlled by the push rod to move the water retaining part up and down.

[0006] In the above-mentioned new type of filter check valve, one end of the connecting spring one is connected to the lower end of the push rod, and the other end of the connecting spring one is connected to the fixed sleeve, and the push rod is controlled by the connecting spring one, one end of the connecting spring two is connected to the control valve core, and the other end of the connecting spring two is connected to the upper end of the fixed part, and the control valve core is controlled by the connecting spring two.

[0007] In the above-mentioned novel filter check valve, a positioning convex ring for the lower end of the filter sleeve to abut is arranged on the inner wall of the valve body.

[0008] Compared with the prior art, the novel filter check valve is provided with a filter sleeve in the valve body to filter the liquid passing through the valve body, and the filter sleeve does not affect the seal between the valve body and the filter sleeve, thereby improving the service life of the novel filter check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] In the figure, 1. valve body; 2. water inlet end; 3. water outlet end; 4. fixing part; 5. through hole; 6. fixing part; 8. control valve core; 9. push rod; 10. pressing cover; 11. filter sleeve; 12. connecting spring 1; 13. connecting spring 2; 14. fixing sleeve; 15. filter hole; 16. water retaining part; 17. positioning convex ring. DETAILED DESCRIPTION

[0011] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0012] like Figure 1As shown, the novel filter check valve comprises a valve body 1, on which a water inlet end 2 and a water outlet end 3 are arranged, the water inlet end 2 and the valve body 1 are arranged in an L-shaped structure, the water outlet end 3 and the valve body 1 are formed as an integral part, the upper end of the valve body 1 is detachably connected with a fixing member 4, a fixing portion 6 is arranged in the water outlet end 3, a through hole 5 for liquid circulation is opened on the fixing portion 6, a control valve core 8 for controlling the circulation of liquid in the valve body is arranged in the valve body, and the control valve core 8 can be moved up and down in the valve body 1, a push rod 9 for controlling the control valve core 8 to move up and down and a pressing cover 10 connected to the push rod 9 are arranged in the fixing member 4, the pressing cover 10 extends out of the novel filter check valve and can be pressed by a user, so as to move the push rod 9 applies pressure, a filter sleeve 11 for filtering is arranged in the valve body 1, a connecting spring 12 is arranged between the push rod and the filter sleeve 11, a connecting spring 2 13 is sleeved on the control valve core 8, a fixing sleeve 14 is sleeved in the valve body 1 and at the lower end relative to the fixing part 6, the upper end of the filter sleeve 11 is fixedly arranged on the fixing sleeve 14, the filter sleeve 11 is arranged on the fixing sleeve 14, when the filter hole 15 of the filter sleeve 11 is blocked, it is not necessary to remove the filter sleeve 11 from the fixing sleeve 14, and the filter sleeve 11 does not affect the sealing between the fixing sleeve 14 and the fixing member 4, the lower end of the filter sleeve 11 is against the valve body 1, and the lower end of the filter sleeve 11 is provided with a plurality of filter holes 15 for filtering.

[0013] To elaborate further, a water retaining portion 16 is provided at the rear end of the control valve core 8, the rear end of the water retaining portion 16 is connected to the bottom of the fixed portion 6, and the water retaining portion 16 is controlled to close or open the through hole 5 by rising and falling of the control valve core 8, and the front end of the control valve core 8 is connected to the push rod 9 and is controlled by the push rod 9 to move the water retaining portion 16 up and down.

[0014] To elaborate further, one end of the connecting spring 12 is connected to the lower end of the push rod 9, and the other end of the connecting spring 12 is connected to the fixing sleeve 14, and the push rod 9 is controlled by the connecting spring 12, one end of the connecting spring 2 13 is connected to the control valve core 8, and the other end of the connecting spring 2 13 is connected to the upper end of the fixing portion 6, and the control valve core 8 is controlled by the connecting spring 2 13.

[0015] In further detail, a positioning convex ring 17 is provided on the inner wall of the valve body 1 for the lower end of the filter sleeve 11 to abut against. The upper end of the positioning convex ring 17 is used to abut against the lower end of the filter sleeve 11 to position the filter sleeve 11.

[0016] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0017] Although the terms such as valve body 1, water inlet end 2, water outlet end 3, fixing member 4, through hole 5, fixing part 6, control valve core 8, push rod 9, pressing cover 10, filter sleeve 11, connecting spring 1 12, connecting spring 2 13, fixing sleeve 14, filter hole 15, water retaining part 16, positioning convex ring 17 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A novel filter check valve, comprising a valve body (1), wherein the valve body (1) is provided with a water inlet end (2) and a water outlet end (3), characterized in that: The upper end of the valve body (1) is detachably connected to a fixing member (4); a fixing portion (6) is provided in the water outlet end (3); a through hole (5) is provided on the fixing portion (6) for liquid circulation; a control valve core (8) for controlling the liquid circulation in the valve body (1) is provided in the valve body (1), and the control valve core (8) can move up and down in the valve body (1); a push rod (9) for controlling the control valve core (8) to move up and down and a pressing cover (10) connected to the push rod (9) are provided in the fixing member (4); the valve body (1) A filter sleeve (11) for filtering is arranged inside, a connecting spring 1 (12) is arranged between the push rod (9) and the filter sleeve (11), a connecting spring 2 (13) is sleeved on the control valve core (8), a fixing sleeve (14) is sleeved inside the valve body (1) and at the lower end relative to the fixing portion (6), the upper end of the filter sleeve (11) is fixedly arranged on the fixing sleeve (14), the lower end of the filter sleeve (11) is abutted against the valve body (1), and the lower end of the filter sleeve (11) is provided with a plurality of filtering holes (15) for filtering.

2. A novel filter check valve according to claim 1, characterized in that: A water retaining portion (16) is provided at the rear end of the control valve core (8), the rear end of the water retaining portion (16) is connected to the bottom of the fixed portion (6), and the water retaining portion (16) is controlled to close or open the through hole (5) by rising and falling of the control valve core (8), and the front end of the control valve core (8) is connected to the push rod (9) and is controlled by the push rod (9) to move the water retaining portion (16) up and down.

3. A novel filter check valve according to claim 1, characterized in that: One end of the connecting spring 1 (12) is connected to the lower end of the push rod (9), and the other end of the connecting spring 1 (12) is connected to the fixing sleeve (14). The push rod (9) is controlled by the connecting spring 1 (12). One end of the connecting spring 2 (13) is connected to the control valve core (8), and the other end of the connecting spring 2 (13) is connected to the upper end of the fixing portion (6). The control valve core (8) is controlled by the connecting spring 2 (13).

4. A novel filter check valve according to claim 1, characterized in that: The inner wall of the valve body (1) is provided with a positioning convex ring (17) for abutting the lower end of the filter sleeve (11).

Images