Integrated check gate valve

Abstract

This utility model discloses an integrated check gate valve, belonging to the field of valve technology. It includes an integrally formed gate valve and a check valve. The gate valve has a gate plate inside. The check valve has a check port on the side near the gate valve inside. A valve disc is hinged to the side of the check valve near the check port inside. A sleeve is fixedly connected to the bottom of the check valve near the check port. A screw is rotatably connected inside the sleeve. A knob is fixedly connected to one end of the screw, and a support column is threaded to the other end of the screw. The end of the support column away from the screw extends into the check valve and abuts against the valve disc. By setting up the sleeve, screw, knob, and support column, when the valve disc needs to be actively opened, the knob can be rotated. The knob drives the screw to rotate, causing the screw to slide along the sleeve. The support column pushes open the valve disc, thus enabling reverse fluid delivery as needed, improving flexibility.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, specifically relating to an integrated check gate valve. Background Technology

[0002] Check valves and gate valves are widely used in various fields of production and daily life. Existing pipelines in industries such as petroleum, chemical, pharmaceutical, power, and high-rise buildings require both opening and closing of the medium and preventing backflow, thus necessitating the installation of both gate valves and check valves. Since gate valves and check valves are two separate products, a pipe fitting is required to connect them.

[0003] The existing Chinese patent with publication number CN201636358U discloses a gate valve and check valve combination valve, which includes a gate valve and a check valve. Its feature is that the outlet of the gate valve and the inlet of the check valve are fixedly connected together, so that the medium flows directly from the gate valve into the check valve. With the above technical solution, the check valve and the gate valve are integrated into one unit. This reduces the need to process the two flanges on the connecting end face during processing, eliminates the need for bolt connection during installation, and saves the joint between the two.

[0004] Regarding the aforementioned technologies, the inventors have discovered at least the following problems: the check valve disc in existing check gate valves can only be opened by the pressure of the forward fluid. When it is necessary to reverse the flow of fluid, the check valve disc cannot be opened actively, causing many inconveniences. Utility Model Content

[0005] The purpose of this invention is to provide an integrated check gate valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated check gate valve, comprising an integrally formed gate valve and a check valve. The gate valve has a gate plate inside, and the check valve has a check port on the side of the inside of the gate valve near the gate valve. A valve disc is hinged to the side of the inside of the check valve near the check port. A sleeve is fixedly connected to the bottom of the check valve near the check port. A screw is rotatably connected inside the sleeve. A knob is fixedly connected to one end of the screw, and a support column is threaded to the other end of the screw. The end of the support column away from the screw extends into the check valve and abuts against the valve disc.

[0007] In a preferred embodiment, both the gate valve and the check valve are provided with flanges on the sides that are far apart from each other.

[0008] In a preferred embodiment, a rubber ring is fixedly connected inside the check valve on the side of the check port near the valve disc.

[0009] In a preferred embodiment, a rubber pad is fixedly connected to the side of the check valve away from the check port.

[0010] In a preferred embodiment, the inner wall of the sleeve is provided with a sliding groove, and a slider is fixedly connected to one end of the support column near the screw, the slider sliding in the sliding groove.

[0011] In a preferred embodiment, a sealing sleeve is embedded in the check valve near the sleeve, and the support column slides through the sealing sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This integrated check gate valve, with its sleeve, screw, knob, and support column, allows for the active opening of the valve disc when the valve needs to be opened. Rotating the knob drives the screw to rotate, which in turn drives the support column to slide along the sleeve. The support column then pushes the valve disc open, enabling the reverse flow of fluid as needed and improving flexibility.

[0014] This integrated check gate valve features a rubber ring. When the check valve is closed, the valve disc strikes the rubber ring, reducing the impact between the valve disc and the check port. Additionally, a rubber pad is included. When the valve disc is opened due to fluid impact, it strikes the rubber pad, further reducing the impact between the valve disc and the inner wall of the check valve, thus extending the valve's service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0018] In the diagram: 1. Gate valve; 11. Gate plate; 2. Check valve; 21. Check port; 22. Valve disc; 23. Sleeve; 24. Screw; 25. Knob; 26. Support column; 27. Rubber ring; 28. Rubber pad; 29. ​​Slide groove; 210. Sliding block; 211. Sealing sleeve; 3. Flange. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments.

[0020] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0021] Please see Figure 1-3 This utility model provides an integrated check gate valve, including an integrally formed gate valve 1 and a check valve 2. A flange 3 is provided on the side of the gate valve 1 and the check valve 2 that are far apart from each other. The integrally formed gate valve 1 and check valve 2 can be installed on the fluid pipeline through the flange 3.

[0022] The gate valve 1 has a gate plate 11 inside. The top of the gate valve 1 has a handwheel for controlling the raising and lowering of the gate plate 11. By turning the handwheel, the gate plate 11 can be raised and lowered, thereby controlling the flow of fluid. The check valve 2 has a check port 21 on the side of the gate valve 1 inside. The valve disc 22 is hinged to the side of the check port 21 inside the check valve 2. By setting the check port 21 and the valve disc 22, when the fluid flows in the forward direction, the fluid pressure will push the valve disc 22 open, allowing the fluid to enter the check valve 2 from the check port 21. When the fluid flows in the reverse direction, the valve disc 22 will automatically rotate and block the check port 21, preventing the fluid from flowing back from the check port 21.

[0023] The check valve 2 has a rubber ring 27 fixedly connected inside the check port 21 near the valve disc 22. When the check valve 2 is closed, the valve disc 22 will hit the rubber ring 27, which can reduce the impact between the valve disc 22 and the check port 21.

[0024] Among them, a rubber pad 28 is fixedly connected to the side of the check valve 2 away from the check port 21. By setting the rubber pad 28, when the valve disc 22 is opened by fluid impact, the valve disc 22 will hit the rubber pad 28, which can reduce the collision impact between the valve disc 22 and the inner wall of the check valve 2.

[0025] Furthermore, a sleeve 23 is fixedly connected to the bottom of the check valve 2 near the check port 21. A screw 24 is rotatably connected inside the sleeve 23. A knob 25 is fixedly connected to one end of the screw 24, and a support column 26 is threadedly connected to the other end of the screw 24. The end of the support column 26 away from the screw 24 extends into the check valve 2 and abuts against the valve disc 22. By setting up the sleeve 23, screw 24, knob 25 and support column 26, when it is necessary to actively open the valve disc 22, the knob 25 can be rotated. The knob 25 drives the screw 24 to rotate, so that the screw 24 drives the support column 26 to slide along the sleeve 23. The support column 26 pushes open the valve disc 22, thereby enabling reverse fluid delivery as needed and improving flexibility.

[0026] The inner wall of the sleeve 23 is provided with a sliding groove 29, and a slider 210 is fixedly connected to one end of the support column 26 near the screw 24. The slider 210 slides in the sliding groove 29. By setting the sliding groove 29 and the slider 210, the support column 26 can be guided to slide, thereby improving the stability of the support column 26.

[0027] Among them, a sealing sleeve 211 is embedded in the check valve 2 near the sleeve 23, and the support column 26 slides through the sealing sleeve 211. By setting the sealing sleeve 211, the connection between the support column 26 and the check valve 2 can be sealed.

[0028] The working principle and usage process of this utility model are as follows: First, the integrally formed gate valve 1 and check valve 2 can be installed on the fluid pipeline through the flange 3. When the fluid flows in the forward direction, the fluid pressure will push the valve disc 22 open, allowing the fluid to enter the check valve 2 from the check port 21. When the fluid flows in the reverse direction, the valve disc 22 will automatically rotate and block the check port 21, preventing the fluid from flowing back from the check port 21. When it is necessary to actively open the valve disc 22, the knob 25 can be turned. The knob 25 drives the screw 24 to rotate, causing the screw 24 to drive the support column 26 to slide along the sleeve 23. The support column 26 pushes the valve disc 22 open, thereby enabling the reverse delivery of fluid as needed, improving flexibility.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated check gate valve comprising an integrated gate valve (1) and check valve (2), characterized in that: The gate valve (1) is provided with a gate plate (11) inside. The check valve (2) has a check port (21) on the side of the gate valve (1) inside. The valve disc (22) is hinged on the side of the check valve (2) inside. The sleeve (23) is fixedly connected to the bottom of the check valve (2) on the side of the check port (21). The screw (24) is rotatably connected inside the sleeve (23). A knob (25) is fixedly connected to one end of the screw (24). A support column (26) is threaded to the other end of the screw (24). The end of the support column (26) away from the screw (24) extends into the check valve (2) and abuts against the valve disc (22).

2. The integrated check globe valve of claim 1, wherein: The gate valve (1) and the check valve (2) are both provided with flanges (3) on the sides that are far apart from each other.

3. The integrated check globe valve of claim 1, wherein: A rubber ring (27) is fixedly connected inside the check valve (2) on the side of the check port (21) near the valve disc (22).

4. The integrated check globe valve of claim 1, wherein: A rubber pad (28) is fixedly connected to the side of the check valve (2) away from the check port (21).

5. The integrated check valve according to claim 1, characterized in that: The inner wall of the sleeve (23) is provided with a sliding groove (29), and a slider (210) is fixedly connected to one end of the support column (26) near the screw (24). The slider (210) slides in the sliding groove (29).

6. The integrated check valve according to claim 1, characterized in that: The check valve (2) is fitted with a sealing sleeve (211) near the sleeve (23), and the support column (26) slides through the sealing sleeve (211).

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