High-pressure self-sealing gate valve

Abstract

The utility model relates to the technical field of gate valves, in particular to a high-pressure self-sealing gate valve which comprises a valve body, flanges are fixedly connected to the left end and the right end of the valve body, and a filtering mechanism is arranged in the valve body. The filtering mechanism comprises a filtering net, a sliding groove, a sliding block, a disc, an ejector pin, a rotating rod, a spiral blade, a short rod and a long rod; the filter screen is fixedly connected to the left end of the valve body, the sliding groove is formed in the inner wall of the valve body, the sliding block is slidably connected to the interior of the sliding groove, the disc is fixedly connected with the sliding block, the ejector pin is fixedly connected to the left side of the disc, the sliding block is limited by arranging the sliding groove, and the front end and the rear end of the rotating rod are rotationally connected with the inner wall of the valve body. The spiral blade and the rotating rod are driven to rotate through power generated when water flows through the interior of the valve body, the rotating rod rotates to drive the ejector pin to move left and right, and filter holes in the filter screen are dredged, so that the smoothness of the filter screen is guaranteed, manual cleaning of the filter screen is avoided, and manpower expenditure is reduced for a factory.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a high-pressure self-sealing gate valve. Background Art

[0002] At present, the high-pressure gate valves on the market have been widely used in the power, hydraulic, petrochemical and metallurgical industries, and are suitable for oil and steam pipelines in petrochemical, thermal power plants, etc. as opening and closing devices to connect or cut off the medium in the pipeline. The existing high-pressure gate valves are usually composed of valve body, valve seat, gate, valve stem, valve cover, bracket, hand wheel, etc., and the working temperature and working pressure of the valve are relatively high.

[0003] After searching, the Chinese patent announcement number CN205978533U discloses a high-pressure self-sealing gate valve, including a valve body, a bevel gear, a locking device, a sealing device, an actuator, a locking head, a graphite packing and a surfacing. The bottom of the valve body is provided with a bevel gear, and the middle of the valve body is provided with a sealing device. The top of the valve body is provided with an actuator, and the center of the valve body is provided with a locking column. The locking column and the locking head are an integrated valve stem, and the valve body is connected to the actuator through the locking column. The above patent has the following shortcomings: In order to prevent impurities in the water flow from entering the valve body and causing internal blockage, a filter screen is usually set in front of the valve body to filter out impurities, but the filter screen may be blocked by impurities, which affects the flowability of the valve body. Replacing the filter screen is not only time-consuming and labor-intensive, but also leads to an increase in the labor cost of the factory. In view of this, we propose a high-pressure self-sealing gate valve. Utility Model Content

[0004] The purpose of the utility model is to provide a high-pressure self-sealing gate valve to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-pressure self-sealing gate valve comprises a valve body, the left and right ends of the valve body are fixedly connected with flanges, and a filtering mechanism is arranged inside the valve body;

[0007] The filtering mechanism includes a filtering screen, a chute, a slider, a disc, a thimble, a rotating rod, a spiral blade, a short rod, and a long rod;

[0008] The filter is fixedly connected to the left end of the valve body, the slide groove is opened on the inner wall of the valve body, the slider is slidably connected inside the slide groove, the disc is fixedly connected to the slider, the ejector pin is fixedly connected to the left side of the disc, and the slider is limited by setting the slide groove.

[0009] Preferably, the front and rear ends of the rotating rod are rotatably connected to the inner wall of the valve body, and the spiral blade is fixedly connected to the middle part of the rotating rod, and the spiral blade is driven to rotate by water flowing through the inside of the valve body.

[0010] Preferably, the right end of the short rod is fixedly connected to the rotating rod, and the left end of the short rod is hinged to the right side of the disc through the long rod.

[0011] Preferably, a shock absorbing mechanism is provided at the bottom of the valve body, and the shock absorbing mechanism includes a base, and the base is fixedly connected to the bottom of the valve body. The bottom of the base is connected to a fixed plate through a damper, and the outer sleeve of the damper is provided with a spring, the top end of the spring is fixedly connected to the base, and the bottom end of the spring is fixedly connected to the fixed plate, and the bottom of the fixed plate is fixedly connected to an electric suction cup. The arrangement of the electric suction cup facilitates the device to be fixed on the operating platform.

[0012] Preferably, the top of the valve body is fixedly connected to a base, the top of the base is fixedly connected to a bracket, the top of the bracket is rotatably connected to a turning handle, a threaded rod is threaded through the turning handle, and the threaded rod is driven to rise by rotating the turning handle.

[0013] Preferably, a sealing groove is provided inside the valve body, and a valve flap is slidably connected inside the sealing groove. The bottom end of the threaded rod penetrates into the interior of the valve body and is rotatably connected to the top end of the valve flap.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The power of water flowing through the valve body drives the spiral blade and the rotating rod to rotate. The rotation of the rotating rod drives the ejector pin to move left and right, and dredge the filter holes in the filter screen, thereby ensuring the smoothness of the filter screen and avoiding manual cleaning of the filter screen, reducing manpower expenses for the factory.

[0016] 2. Through the cooperation between the base, damper, fixing plate, spring and electric suction cup, the device can be quickly installed on the working platform, and the device can be buffered when the working platform vibrates due to mechanical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a front cross-sectional view of the utility model;

[0019] Figure 3 It is a schematic diagram of the filter mechanism area of ​​the utility model.

[0020] In the figure: 1. valve body; 2. filtering mechanism; 3. shock absorbing mechanism; 4. flange; 5. base; 6. bracket; 7. threaded rod; 8. turning handle; 9. valve disc; 10. sealing groove; 21. filter screen; 22. slide groove; 23. slider; 24. disc; 25. ejector pin; 26. turning rod; 27. spiral blade; 28. short rod; 29. ​​long rod; 31. base; 32. damper; 33. fixing plate; 34. spring; 35. electric suction cup. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] like Figure 1-3 As shown, a high-pressure self-sealing gate valve comprises a valve body 1, the left and right ends of the valve body 1 are fixedly connected with flanges 4, and a filter mechanism 2 is arranged inside the valve body 1; the filter mechanism 2 comprises a filter screen 21, a chute 22, a slider 23, a disc 24, a pin 25, a rotating rod 26, a spiral blade 27, a short rod 28, and a long rod 29; the filter screen 21 is fixedly connected to the left end of the valve body 1, the chute 22 is provided on the inner wall of the valve body 1, the slider 23 is slidably connected inside the chute 22, the disc 24 is fixedly connected to the slider 23, and the pin 25 is fixedly connected to the left side of the disc 24. The slider 23 is limited by setting the chute 22. The front and rear ends of the rotating rod 26 are rotatably connected to the inner wall of the valve body 1, and the spiral blade 27 is fixedly connected to the middle part of the rotating rod 26. The spiral blade 27 is driven to rotate by the water flowing through the inside of the valve body 1. The right end of the short rod 28 is fixedly connected to the rotating rod 26 , and the left end of the short rod 28 is hinged to the right side of the disc 24 through the long rod 29 .

[0024] Specifically, the power of water flowing through the valve body 1 drives the spiral blade 27 and the rotating rod 26 to rotate, and the rotation of the rotating rod 26 drives the ejector pin 25 to move left and right, and clears the filter holes in the filter screen 21.

[0025] Embodiment 2

[0026] like Figure 1-3As shown, a damping mechanism 3 is provided at the bottom of the valve body 1. The damping mechanism 3 includes a base 31, which is fixedly connected to the bottom of the valve body 1. The bottom of the base 31 is connected to a fixed plate 33 through a damper 32. A spring 34 is sleeved on the outside of the damper 32. The top of the spring 34 is fixedly connected to the base 31, and the bottom of the spring 34 is fixedly connected to the fixed plate 33. The bottom of the fixed plate 33 is fixedly connected to an electric suction cup 35. The electric suction cup 35 is provided to facilitate the fixing of the device on the operating platform. The top of the valve body 1 is fixedly connected to a base 5, and the top of the base 5 is fixedly connected to a bracket 6. The top of the bracket 6 is rotatably connected to a handle 8, and a threaded rod 7 is threaded through the handle 8. The threaded rod 7 is driven to rise by rotating the handle 8. A sealing groove 10 is provided inside the valve body 1, and a valve flap 9 is slidably connected inside the sealing groove 10. The bottom end of the threaded rod 7 penetrates into the inside of the valve body 1 and is rotatably connected to the top of the valve flap 9.

[0027] Specifically, through the mutual cooperation among the base 31, the damper 32, the fixing plate 33, the spring 34, and the electric suction cup 35, the device can be quickly installed on the working platform, and the device can be buffered when the working platform vibrates due to mechanical operation.

[0028] The working principle of the utility model is as follows:

[0029] First, the device is fixed on the working platform by the electric suction cup 35. When the working platform vibrates due to mechanical operation, the vibration is buffered by the damper 32. The power of water flowing through the valve body 1 drives the spiral blade 27 and the rotating rod 26 to rotate. The rotation of the rotating rod 26 drives the short rod 28 to rotate. The rotation of the short rod 28 drives the disc 24 to move left and right through the long rod 29. The left and right movement of the disc 24 drives the ejector pin 25 to move left and right, and insert it into the filter hole in the filter screen 21 to dredge the filter screen 21.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high pressure self-sealing gate valve, characterized in that: include: A valve body (1), the left and right ends of the valve body (1) are fixedly connected with flanges (4), and a filtering mechanism (2) is arranged inside the valve body (1); The filtering mechanism (2) comprises a filtering net (21), a sliding groove (22), a sliding block (23), a disc (24), a thimble (25), a rotating rod (26), a spiral blade (27), a short rod (28), and a long rod (29); The filter screen (21) is fixedly connected to the left end of the valve body (1), the slide groove (22) is opened on the inner wall of the valve body (1), the slider (23) is slidably connected inside the slide groove (22), the disc (24) is fixedly connected to the slider (23), and the ejector pin (25) is fixedly connected to the left side of the disc (24).

2. A high pressure self-sealing gate valve according to claim 1, characterized in that: The front and rear ends of the rotating rod (26) are rotatably connected to the inner wall of the valve body (1), and the spiral blade (27) is fixedly connected to the middle part of the rotating rod (26).

3. A high pressure self-sealing gate valve according to claim 2, characterized in that: The right end of the short rod (28) is fixedly connected to the rotating rod (26), and the left end of the short rod (28) is hinged to the right side of the disc (24) through a long rod (29).

4. A high pressure self-sealing gate valve according to claim 3, characterized in that: A shock absorbing mechanism (3) is provided at the bottom of the valve body (1), and the shock absorbing mechanism (3) comprises a base (31), the base (31) is fixedly connected to the bottom of the valve body (1), the bottom of the base (31) is connected to a fixing plate (33) via a damper (32), a spring (34) is sleeved on the outside of the damper (32), the top end of the spring (34) is fixedly connected to the base (31), the bottom end of the spring (34) is fixedly connected to the fixing plate (33), and the bottom of the fixing plate (33) is fixedly connected to an electric suction cup (35).

5. A high pressure self-sealing gate valve according to claim 4, characterized in that: The top of the valve body (1) is fixedly connected to a base (5), the top of the base (5) is fixedly connected to a bracket (6), the top of the bracket (6) is rotatably connected to a handle (8), and a threaded rod (7) is threadedly penetrated on the handle (8).

6. A high pressure self-sealing gate valve according to claim 5, characterized in that: A sealing groove (10) is provided inside the valve body (1), and a valve flap (9) is slidably connected inside the sealing groove (10). The bottom end of the threaded rod (7) penetrates into the interior of the valve body (1) and is rotatably connected to the top end of the valve flap (9).

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