Novel expansion part of check valve

Abstract

The utility model provides a novel check valve expansion component which comprises a valve body, a tubular protrusion integrally arranged at the left end of the valve body, a valve clack arranged on the right side of the valve body, a valve rod integrally arranged on the left side of the valve clack, a spring installed outside the valve rod, and a rack integrally arranged on the upper portion of the tubular protrusion from left to right. A gear is arranged on the left side of the upper portion of the tubular protrusion. Due to the arrangement of the tubular bulge, the rack, the gear and the motor, the strength of the spring is reduced along with the increase of opening and closing times, and the response speed of the valve clack can be ensured through adjustment.

Description

Technical Field

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

[0002] A check valve is a valve whose opening and closing parts are circular discs and which blocks the backflow of the medium by its own weight and the pressure of the medium. It belongs to the category of automatic valves and is also called non-return valve, one-way valve, reflux valve or isolation valve. Existing check valves are equipped with expansion components to drive the disc to move. Existing check valve expansion components usually include a valve body, a disc and a spring installed between the valve body and the disc. When such a check valve expansion component is used, as the number of openings and closings increases, the strength of the spring decreases, which easily affects the response speed of the disc. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a novel check valve expansion component. As the number of switching times increases, the strength of the spring decreases, and the response speed of the valve disc can be ensured through adjustment.

[0004] The utility model is realized by the following technical solutions:

[0005] A new type of check valve expansion component includes a valve body, a tubular protrusion is integrated at the left end of the valve body, a valve disc is provided on the right side of the valve body, a valve stem is integrated on the left side of the valve disc, and a spring is installed on the outside of the valve stem. It is characterized in that a rack is integrated from left to right on the upper part of the tubular protrusion, a gear is provided on the left side of the upper part of the tubular protrusion, the gear is meshingly connected with the rack, and a motor is provided on one side of the gear.

[0006] Preferably, a first connecting portion is integrally provided on both the front and rear sides of the left end of the tubular protrusion.

[0007] Preferably, a second connecting portion is integrally provided on the front and rear sides of the right end of the valve body.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] 1. In the present invention, the arrangement of the tubular protrusion, rack, gear, and motor, as the number of switches increases, the strength of the spring decreases, which is conducive to ensuring the response speed of the valve disc through adjustment.

[0010] 2. In the utility model, the arrangement of the valve body, valve disc, valve stem and spring is conducive to blocking the backflow of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2It is a schematic diagram of the explosion structure of the utility model.

[0013] In the figure:

[0014] 1. Valve body; 2. Tubular protrusion; 3. First connecting part; 4. Second connecting part; 5. Valve flap; 6. Valve stem; 7. Spring; 21. Rack; 22. Gear; 23. Motor. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1 and attached Figure 2 As shown, a novel check valve expansion component comprises a valve body 1, a tubular protrusion 2 is integrally provided at the left end of the valve body 1, a valve flap 5 is provided on the right side of the valve body 1, a valve stem 6 is integrally provided on the left side of the valve flap 5, a spring 7 is installed on the outside of the valve stem 6, a rack 21 is integrally provided on the upper part of the tubular protrusion 2 from left to right, a gear 22 is provided on the left side of the upper part of the tubular protrusion 2, the gear 22 is meshed and connected with the rack 21, a motor 23 is provided on one side of the gear 22, the motor 23 adopts a worm gear reduction motor, when the strength of the spring 7 is reduced, the user connects the motor 23 to the external control device, the motor 23 drives the gear 22 to rotate, thereby driving the rack 21 to move rightward, so that the valve body 1 moves rightward, reducing the progress of the spring 7, and ensuring the response speed of the valve flap 5.

[0016] In this embodiment, specifically, the first connecting portion 3 is integrally provided on both the front and rear sides of the left end of the tubular protrusion 2 .

[0017] In this embodiment, specifically, the second connecting portion 4 is integrally provided on both the front and rear sides of the right end of the valve body 1 .

[0018] In this embodiment, specifically, the valve stem 6 passes through the valve body 1 and the tubular protrusion 2 .

[0019] In this embodiment, specifically, two ends of the spring 7 are fixed to the valve body 1 and the valve disc 5 respectively.

[0020] In this embodiment, specifically, the output shaft of the motor 23 is fixed to the gear 22 .

[0021] How it works

[0022] In the utility model, when in use, the valve body 1 and the tubular protrusion 2 are slidably arranged in the external valve seat through the first connecting part 3 and the second connecting part 4, and the output shaft of the motor 23 is connected to the valve seat sealing bearing. When the medium flows forward, the valve flap 5 is pushed to the left, and the spring 7 is in a compressed state, allowing the liquid to flow through. When the medium flows back, the valve flap 5 moves to the left, and the spring 7 is in an expanded state, blocking the valve seat to prevent the liquid from flowing back.

[0023] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A novel check valve expansion component, comprising a valve body (1), a tubular protrusion (2) being integrally provided at the left end of the valve body (1), a valve flap (5) being provided at the right side of the valve body (1), a valve stem (6) being integrally provided at the left side of the valve flap (5), a spring (7) being installed outside the valve stem (6), and characterized in that: A rack (21) is integrally arranged on the upper part of the tubular protrusion (2) from left to right, a gear (22) is arranged on the left side of the upper part of the tubular protrusion (2), the gear (22) is meshedly connected with the rack (21), and a motor (23) is arranged on one side of the gear (22).

2. The novel check valve expansion component according to claim 1, characterized in that: A first connecting portion (3) is integrally provided on both the front and rear sides of the left end of the tubular protrusion (2).

3. The novel check valve expansion component according to claim 1, characterized in that: A second connecting portion (4) is integrally provided on both the front and rear sides of the right end of the valve body (1).

4. The novel check valve expansion component according to claim 1, characterized in that: The valve stem (6) passes through the valve body (1) and the tubular protrusion (2).

5. The novel check valve expansion component according to claim 1, characterized in that: The two ends of the spring (7) are respectively fixed to the valve body (1) and the valve disc (5).

6. The novel check valve expansion component according to claim 1, characterized in that: The output shaft of the motor (23) is fixed to the gear (22).

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