Slice swing check valve positioning structure

Abstract

The utility model discloses a sheet swing check valve positioning structure, and relates to the field of check valves. The sheet swing check valve positioning structure comprises positioning caps, the positioning caps are fixedly installed in a valve body, a valve rod is rotationally arranged between the two positioning caps, the bottom of the valve rod is fixedly connected with a sheet valve clack, and the side face of the sheet valve clack abuts against the interior of the valve body. According to the sheet swing check valve positioning structure, in the using process, the positioning caps are fixedly installed in the valve body, the valve rod is rotationally arranged between the two positioning caps, at the moment, the middle part of the valve rod can be located in the through cavity, then the middle part of the valve rod is connected with the sheet valve clack, the space occupied by the through cavity is reduced, and therefore the sealing performance of the valve is improved. And therefore, the positioning cap and the valve rod cannot influence the flowing of fluid in the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a positioning structure for a thin plate swing check valve. Background Art

[0002] The working principle of a thin plate swing check valve is based on the rotational movement of the valve flap. When the fluid flows into the valve body from the inlet, the fluid pressure pushes the valve flap to rotate around the hinge mechanism, opening the valve so that the fluid can pass through smoothly. When the fluid flows back reversely from the outlet, the valve flap quickly closes under the action of the fluid pressure and its own gravity, cutting off the fluid passage to achieve the check function.

[0003] The internal valve flap of a thin plate swing check valve is generally rotatably arranged inside the valve body through a positioning cap. The existing internal positioning cap of a thin plate swing check valve is generally arranged above its flow passage, and the top of the valve flap is directly connected to the positioning cap. However, the connecting component between the positioning cap and the top of the valve flap is large in size, which is likely to affect the flow of the internal fluid. Therefore, the present application proposes a positioning structure for a thin plate swing check valve. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a positioning structure for a thin plate swing check valve, which solves the problem that the existing internal positioning cap of a thin plate swing check valve is generally arranged above its flow passage, and the top of the valve flap is directly connected to the positioning cap. However, the connecting component between the positioning cap and the top of the valve flap is large in size, which is likely to affect the flow of the internal fluid.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A positioning structure for a thin plate swing check valve includes a positioning cap fixedly installed inside the valve body. A valve rod is rotatably arranged between the two positioning caps. The bottom of the valve rod is fixedly connected to a thin plate valve flap, and the side surface of the thin plate valve flap abuts against the inside of the valve body.

[0006] Preferably, a through cavity is opened inside the valve body, and a sealing groove is arranged on the inner wall of the through cavity.

[0007] Preferably, the thin plate valve flap is located inside the sealing groove, and the side surface of the thin plate valve flap fits against the inner wall of the sealing groove.

[0008] Preferably, a protrusion is arranged on the side surface of the thin plate valve flap and extends towards the through cavity.

[0009] Preferably, a fixing bolt is arranged between the top of the positioning cap and the inner wall of the valve body.

[0010] Preferably, a hanging ring is arranged on the top of the valve body. A connecting bolt is fixedly connected to the bottom of the hanging ring, and the hanging ring is fixedly connected to the top of the valve body through the connecting bolt.

[0011] The present utility model discloses a positioning structure for a thin plate swing check valve, and its beneficial effects are as follows:

[0012] In the process of using this positioning structure for a thin plate swing check valve, the positioning cap is fixedly installed inside the valve body, and the valve stem is rotatably arranged between the two positioning caps. At this time, the middle part of the valve stem can be located in the through cavity, and then the middle part of the valve stem is connected to the thin plate valve flap, reducing the space occupied in the through cavity, so that the positioning cap and the valve stem will not affect the flow of fluid inside the valve body.

[0013] In this positioning structure for a thin plate swing check valve, since the side surface of the thin plate valve flap fits with the inner wall of the sealing groove, the thin plate valve flap can only rotate in one direction, and thus the fluid can only push the thin plate valve flap to rotate from one side, achieving the check valve function. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 It is a cross-sectional structural view of the present utility model;

[0017] Figure 3 It is an enlarged view of a partial structure of the present utility model.

[0018] In the figure: 1. Valve body; 11. Through cavity; 12. Sealing groove; 2. Positioning cap; 21. Fixed bolt; 3. Valve stem; 4. Thin plate valve flap; 41. Protrusion; 5. Hanging ring; 51. Connecting bolt. Detailed Embodiment

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] In the embodiment of the present application, by providing a positioning structure for a thin plate swing check valve, the problem that the internal positioning cap of the existing thin plate swing check valve is generally arranged above its flow passage, the top of the valve flap is directly connected to the positioning cap, but the connecting part between the positioning cap and the top of the valve flap is large in size, thus easily affecting the flow of internal fluid is solved. It is realized that during use, the positioning cap 2 is fixedly installed inside the valve body 1, and a valve stem 3 is rotatably arranged between the two positioning caps 2. At this time, the middle part of the valve stem 3 can be in the through cavity 11, and then the middle part of the valve stem 3 is connected to the thin plate valve flap 4, reducing the space occupied by the through cavity 11, so that the positioning cap 2 and the valve stem 3 do not affect the flow of fluid inside the valve body 1.

[0021] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific embodiments.

[0022] The embodiment of the utility model discloses a positioning structure for a thin plate swing check valve. According to the attached Figures 1-3 As shown, it includes a positioning cap 2 which is fixedly installed inside the valve body 1. A valve stem 3 is rotatably arranged between the two positioning caps 2. The bottom of the valve stem 3 is fixedly connected to a thin plate valve flap 4, and the side surface of the thin plate valve flap 4 abuts against the inside of the valve body 1.

[0023] During use, the positioning cap 2 is fixedly installed inside the valve body 1, and a valve stem 3 is rotatably arranged between the two positioning caps 2. Then, by connecting the middle part of the valve stem 3 to the thin plate valve flap 4, the positioning cap 2 and the valve stem 3 do not affect the flow of fluid inside the valve body 1.

[0024] Furthermore, a through cavity 11 is formed inside the valve body 1, and a sealing groove 12 is arranged on the inner wall of the through cavity 11.

[0025] Specifically disclosed, the thin plate valve flap 4 is inside the sealing groove 12, and the side surface of the thin plate valve flap 4 fits against the inner wall of the sealing groove 12.

[0026] Since the side surface of the thin plate valve flap 4 fits against the inner wall of the sealing groove 12, the thin plate valve flap 4 can only rotate in one direction, so that the fluid can only push the thin plate valve flap 4 to rotate from one side, achieving the function of check valve.

[0027] Furthermore, a protrusion 41 is arranged on the side surface of the thin plate valve flap 4, and the protrusion 41 extends into the through cavity 11.

[0028] Furthermore, a fixing bolt 21 is arranged between the top of the positioning cap 2 and the inner wall of the valve body 1.

[0029] By arranging the fixing bolt 21, the positioning cap 2 can be effectively fixed.

[0030] Furthermore, a hanging ring 5 is provided at the top of the valve body 1. A connecting bolt 51 is fixedly connected to the bottom of the hanging ring 5, and the hanging ring 5 is fixedly connected to the top of the valve body 1 through the connecting bolt 51.

[0031] By providing the hanging ring 5, it is convenient to hoist, transport and install the valve body 1.

[0032] During use, the positioning cap 2 is fixedly installed inside the valve body 1, and the valve stem 3 is rotatably arranged between the two positioning caps 2. At this time, the middle part of the valve stem 3 can be located in the through cavity 11. Then, the middle part of the valve stem 3 is connected to the thin disc valve flap 4, reducing the space occupied in the through cavity 11, so that the positioning cap 2 and the valve stem 3 do not affect the flow of fluid inside the valve body 1.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A thin-plate swing check valve positioning structure, comprising a positioning cap (2), the positioning cap (2) being fixedly mounted inside a valve body (1), characterized in that: A valve stem (3) is rotatably arranged between the two positioning caps (2), a thin valve flap (4) is fixedly connected to the bottom of the valve stem (3), and the side surface of the thin valve flap (4) abuts against the inside of the valve body (1).

2. The thin-plate swing check valve positioning structure according to claim 1 is characterized in that: A through cavity (11) is provided inside the valve body (1), and a sealing groove (12) is provided on the inner wall of the through cavity (11).

3. The thin-plate swing check valve positioning structure according to claim 2 is characterized in that: The thin-film valve flap (4) is located inside the sealing groove (12), and the side surface of the thin-film valve flap (4) is in contact with the inner wall of the sealing groove (12).

4. The thin-plate swing check valve positioning structure according to claim 2 is characterized in that: A protrusion (41) is provided on the side surface of the thin-film valve flap (4), and the protrusion (41) extends toward the through cavity (11).

5. The thin-plate swing check valve positioning structure according to claim 1 is characterized in that: A fixing bolt (21) is provided between the top of the positioning cap (2) and the inner wall of the valve body (1).

6. The thin-plate swing check valve positioning structure according to claim 1, characterized in that: A hanging ring (5) is provided on the top of the valve body (1), a connecting bolt (51) is fixedly connected to the bottom of the hanging ring (5), and the hanging ring (5) is fixedly connected to the top of the valve body (1) via the connecting bolt (51).

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