Waterproof hammer forged steel check valve

Abstract

The utility model discloses a waterproof hammer forged steel check valve, and relates to the technical field of check valves. The valve comprises a valve body, a liquid inlet pipeline is fixedly arranged on one side of the valve body, a liquid inlet is formed in the end, away from the valve body, of the liquid inlet pipeline in a penetrating mode, a liquid drainage pipeline is fixedly arranged at the end, away from the liquid inlet pipeline, of the valve body, and a liquid drainage opening is formed in the end, away from the valve body, of the liquid drainage pipeline in a penetrating mode. A connecting rod is rotationally arranged on the valve body, a first fixing block is fixedly arranged on the connecting rod, and a valve clack is fixedly arranged at the end, close to the liquid inlet pipeline, of the first fixing block; the valve body, the connecting rod, the first fixing block, the valve clack, the second fixing block, the first positioning block, an ejector rod, a first limiting block, a third positioning block, a cavity, a first conveying pipeline, a second conveying pipeline and a heavy hammer are matched with one another, so that the valve clack can be slowly closed when a medium flows back, and pipeline damage caused by a water hammer due to too fast closing of the valve clack is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a waterproof hammer forged steel check valve. Background Technique

[0002] A check valve, also known as a one-way valve or a non-return valve, is a valve that realizes the opening and closing state depending on the pressure of the medium itself and the self-weight of the valve core. Its main functions are to prevent the reverse flow of the medium, prevent the pump and the driving motor from reversing, and the discharge of the medium in the container. According to the different movement modes of the valve flap, check valves are mainly divided into two types: lift type and swing type;

[0003] For the existing check valve, during the opening and closing process of the valve flap, the speed of the valve flap is very fast, so water hammer is easily generated, which damages the pipeline and further affects the pipeline safety. Content of the Utility Model

[0004] In order to solve the problem that the existing check valve is prone to generate water hammer due to the too fast closing of the valve flap; the purpose of the utility model is to provide a waterproof hammer forged steel check valve.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a waterproof hammer forged steel check valve, including a valve body, one side of the valve body is fixedly provided with a liquid inlet pipeline, the end of the liquid inlet pipeline away from the valve body is provided with a liquid inlet opening through it, the end of the valve body away from the liquid inlet pipeline is fixedly provided with a liquid discharge pipeline, the end of the liquid discharge pipeline away from the valve body is provided with a liquid discharge opening through it, a connecting rod is rotatably arranged on the valve body, a first fixing block is fixedly arranged on the connecting rod, and a valve flap is fixedly arranged at one end of the first fixing block close to the liquid inlet pipeline.

[0006] Preferably, a second fixing block is fixedly arranged in the valve body, a first positioning block is fixedly arranged on the second fixing block, a push rod is slidably arranged in the first positioning block, and a first limiting block is fixedly arranged at one end of the push rod close to the first positioning block.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0008] 1. Through the mutual cooperation among the valve body, the connecting rod, the first fixing block, the valve flap, the second fixing block, the first positioning block, the push rod, the first limiting block, the third positioning block, the chamber, the first conveying pipeline, the second conveying pipeline and the weight, when the medium flows back, the valve flap can be slowly closed, avoiding pipeline damage caused by water hammer due to the too fast closing of the valve flap;

[0009] 2. Through the mutual cooperation among the third positioning block, the chamber, the first conveying pipeline, the second conveying pipeline, the rotating rod, the external thread, the internal thread and the rotating wheel, the staff can adjust the size of the chamber by rotating the rotating wheel, and then control the closing speed of the valve flap. Description of the Drawings

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0012] Figure 2 It is a schematic diagram of the internal structure of the valve body of the present invention.

[0013] Figure 3 It is a schematic cross-sectional view of the internal structure of the first positioning block of the present invention.

[0014] Figure 4 It is a schematic cross-sectional view of the internal structure of the third positioning block of the present invention.

[0015] In the figure: 1. Valve body; 11. Liquid inlet pipe; 12. Liquid inlet; 13. Liquid discharge pipe; 14. Liquid discharge port; 15. Connecting rod; 16. First fixing block; 17. Valve flap; 2. Second fixing block; 21. First positioning block; 22. Thrust rod; 23. First limiting block; 24. Slide rod; 25. Second limiting block; 26. Third limiting block; 27. Second positioning block; 28. Third positioning block; 29. Chamber; 3. First conveying pipe; 31. Second conveying pipe; 32. Rotating rod; 33. External thread; 34. Internal thread; 35. Runner; 36. Positioning plate; 37. Plumb bob. Specific embodiments

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0017] Embodiment: As Figures 1-4As shown in the figure, the utility model provides a waterproof hammer forging steel check valve, which includes a valve body 1. One side of the valve body 1 is fixedly provided with a liquid inlet pipe 11. The end of the liquid inlet pipe 11 away from the valve body 1 is penetrated and provided with a liquid inlet 12. The end of the valve body 1 away from the liquid inlet pipe 11 is fixedly provided with a liquid discharge pipe 13. The end of the liquid discharge pipe 13 away from the valve body 1 is penetrated and provided with a liquid discharge port 14. A connecting rod 15 is rotatably arranged on the valve body 1. A first fixing block 16 is fixedly arranged on the connecting rod 15. A valve flap 17 is fixedly arranged at one end of the first fixing block 16 close to the liquid inlet pipe 11.

[0018] A second fixing block 2 is fixedly arranged in the valve body 1. A first positioning block 21 is fixedly arranged on the second fixing block 2. A push rod 22 is slidably arranged in the first positioning block 21. A first limiting block 23 is fixedly arranged at one end of the push rod 22 close to the first positioning block 21; the push rod 22 can prevent the valve flap 17 from closing too quickly to generate water hammer.

[0019] A sliding rod 24 is slidably arranged between the first positioning block 21 and the push rod 22. A second limiting block 25 is fixedly arranged at one end of the sliding rod 24 close to the push rod 22; the second limiting block 25 can limit the moving distance of the push rod 22.

[0020] A third limiting block 26 is fixedly arranged at one end of the sliding rod 24 far from the push rod 22; the third limiting block 26 can limit the moving range of the sliding rod 24.

[0021] A second positioning block 27 is fixedly arranged on one side of the liquid inlet pipe 11. A third positioning block 28 is fixedly arranged at the end of the second positioning block 27 away from the liquid inlet pipe 11. A chamber 29 is penetrated in the third positioning block 28. A first conveying pipe 3 is fixedly arranged at the end of the third positioning block 28 close to the second positioning block 27. One end of the first conveying pipe 3 close to the third positioning block 28 is communicated with the chamber 29. One end of the first conveying pipe 3 away from the third positioning block 28 is communicated with the liquid inlet 12; the medium can enter the chamber through the first conveying pipe 3.

[0022] A second conveying pipe 31 is fixedly arranged at one end of the first positioning block 21 close to the third limiting block 26. The end of the second conveying pipe 31 away from the first positioning block 21 is fixedly arranged on the third positioning block 28. One end of the second conveying pipe 31 close to the third positioning block 28 is communicated with the chamber 29; the medium in the chamber can enter the first positioning block 21 through the second conveying pipe 31.

[0023] A rotating rod 32 is movably arranged at the end of the chamber 29 away from the second positioning block 27. An external thread 33 is threadedly arranged at the end of the chamber 29 close to the rotating rod 32. An internal thread 34 matching the external thread 33 is arranged on the surface of the rotating rod 32. A runner 35 is fixedly arranged at the end of the rotating rod 32 away from the third positioning block 28; by rotating the rotating rod 32, the size of the chamber 29 can be controlled, and thus the flow rate of the medium can be controlled.

[0024] One end of the connecting rod 15 is fixedly provided with a positioning plate 36, and a weight 37 is fixedly provided at one end of the positioning plate 36 away from the connecting rod 15; the opening and closing of the valve flap 17 can be controlled by the weight 37.

[0025] Working principle: During use, the medium enters the liquid inlet pipe 11 through the liquid inlet 12. Since the first fixing block 16 is fixedly provided on the valve flap 17, the first fixing block 16 is fixedly provided on the connecting rod 15, and the connecting rod 15 is rotatably provided on the valve body 1, the valve flap 17 will open under the pressure of the medium. The medium will enter the valve body 1 and be discharged through the drain pipe 13 and the drain port 14. At the same time, a part of the medium will enter the chamber 29 through the first conveying pipe 3 and enter the first positioning block 21 through the second conveying pipe 31. Since the ejector rod 22 is slidably provided in the first positioning block 21, the ejector rod 22 will gradually move towards the valve flap 17 under the pressure of the medium;

[0026] When the medium flows back, since there is no medium entering the liquid inlet pipe 11 to apply pressure to the valve flap 17, the valve flap 17 will close under the action of gravity. During the closing process of the valve flap 17, the end away from the first fixing block 16 will contact the ejector rod 22, making it impossible to close directly. Under the influence of the weight 37, the valve flap 17 applies pressure to the ejector rod 22 to make the ejector rod 22 move towards the first positioning block 21. When the ejector rod 22 moves, the medium in the first positioning block 21 will successively enter the liquid inlet pipe 11 through the second conveying pipe 31, the chamber 29, and the first conveying pipe 3. When all the medium in the first positioning block 21 enters the liquid inlet pipe 11, the valve flap 17 will be completely closed. By the above method, the valve flap 17 can be slowly closed to avoid water hammer;

[0027] When it is necessary to adjust the closing speed of the valve flap 17, the staff can rotate the runner 35. Since the rotating rod 32 is fixedly provided on the runner 35, the internal thread 34 is provided on the rotating rod 32, and the external thread 33 matching the internal thread 34 is provided inside the chamber 29, the position of the rotating rod 32 in the chamber 29 can be adjusted by rotating the runner 35 to change the size of the chamber 29, thereby adjusting the flow rate of the chamber 29. The closing speed of the valve flap 17 is proportional to the size of the chamber 29.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A water hammer proof forged steel check valve, comprising a valve body (1), characterized in that: A liquid inlet pipe (11) is fixedly provided on one side of the valve body (1), and a liquid inlet port (12) is formed through the end of the liquid inlet pipe (11) away from the valve body (1). A liquid discharge pipe (13) is fixedly provided on the end of the valve body (1) away from the liquid inlet pipe (11), and a liquid discharge port (14) is formed through the end of the liquid discharge pipe (13) away from the valve body (1). A connecting rod (15) is rotatably provided on the valve body (1), and a first fixing block (16) is fixedly provided on the connecting rod (15). A valve flap (17) is fixedly provided on the end of the first fixing block (16) close to the liquid inlet pipe (11).

2. A water hammer proof forged steel check valve as claimed in claim 1, characterized in that: A second fixing block (2) is fixedly arranged in the valve body (1), a first positioning block (21) is fixedly arranged on the second fixing block (2), a push rod (22) is slidably arranged in the first positioning block (21), and a first limiting block (23) is fixedly arranged at one end of the push rod (22) close to the first positioning block (21).

3. A water hammer proof forged steel check valve as claimed in claim 2, characterized in that: A sliding rod (24) is slidably disposed between the first positioning block (21) and the top rod (22), and a second limiting block (25) is fixedly disposed at one end of the sliding rod (24) close to the top rod (22).

4. A water hammer proof forged steel check valve as claimed in claim 3, characterized in that: A third limiting block (26) is fixedly provided at one end of the sliding rod (24) close to and away from the top rod (22).

5. A water hammer proof forged steel check valve as claimed in claim 1, characterized in that: A second positioning block (27) is fixedly provided on one side of the liquid inlet pipe (11); a third positioning block (28) is fixedly provided on an end of the second positioning block (27) away from the liquid inlet pipe (11); a chamber (29) is provided through the third positioning block (28); a first delivery pipe (3) is fixedly provided on an end of the third positioning block (28) close to the second positioning block (27); an end of the first delivery pipe (3) close to the third positioning block (28) is communicated with the chamber (29); and an end of the first delivery pipe (3) away from the third positioning block (28) is communicated with the liquid inlet (12).

6. A water hammer proof forged steel check valve as claimed in claim 2, characterized in that: A second delivery pipe (31) is fixedly arranged at one end of the first positioning block (21) close to the third limiting block (26), and an end of the second delivery pipe (31) away from the first positioning block (21) is fixedly arranged on the third positioning block (28), and an end of the second delivery pipe (31) close to the third positioning block (28) is communicated with the chamber (29).

7. A water hammer proof forged steel check valve as claimed in claim 5, characterized in that: A rotating rod (32) is movably provided at one end of the chamber (29) away from the second positioning block (27); an external thread (33) is threadedly provided at one end of the chamber (29) close to the rotating rod (32); an internal thread (34) matching the external thread (33) is provided on the surface of the rotating rod (32); and a rotating wheel (35) is fixedly provided at one end of the rotating rod (32) away from the third positioning block (28).

8. The water hammer proof forged steel check valve according to claim 1, characterized in that: A positioning plate (36) is fixedly provided at one end of the connecting rod (15), and a weight (37) is fixedly provided at one end of the positioning plate (36) away from the connecting rod (15).

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