Hydraulic flat valve

Abstract

The hydraulic flat valve relates to the field of valves and comprises a pipeline, a valve body is sleeved outside the pipeline, a fan blade ring is rotatably connected with the inner wall of the pipeline in the middle of the valve body, a fixing plate is fixed on the bottom surface in the valve body, and a limiting rotating shaft is rotatably connected between the inner wall of the valve body and the pipeline and is positioned above the fixing plate. Liquid drives the fan blade ring to rotate in the pipeline, the fan blade ring drives the monitoring rotating shaft to rotate through the transmission belt, when the pipeline is damaged, the flow speed of the liquid in the pipeline is changed, the centrifugal force is changed, the clamping block moves to collide with the spring plate again, and at the moment, the lower limiting plate is bent; the flexible rod is driven to rotate around the adjusting shaft, so that the check block moves and does not make contact with the limiting plate any more or is separated from limiting of the check block, the limiting plate drives the flashboard to move downwards, the circulation opening of the flashboard is separated from the pipeline, the flashboard is automatically closed, and loss caused by large-area liquid leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a hydraulic flat valve. Background Art

[0002] With the increase of urban population and the acceleration of urbanization, urban water supply systems have developed rapidly. With the advancement of industrialization, various industrial pipeline systems have been widely used, requiring a large number of valves to control the flow of fluids. In order to improve the stability and safety of the water supply system, reliable valves are needed to control the water flow, and flat valves are one of them.

[0003] At present, the traditional hydraulic flat valve on the market is generally composed of components such as a cylinder body, a cylinder head, a valve body, a valve cover, a piston, a piston rod, a valve plate, a valve seat and a wave spring. The cylinder body is fixed on the valve body, and the cylinder cover is installed on the top of the cylinder body. A piston is arranged in the cylinder body, and the piston is fixed to the upper end of the piston rod. The lower end of the piston rod extends into the valve cavity of the valve body and is connected to the valve plate. The lower end of the valve body is sealed by the valve cover, and a valve seat is provided on each side of the valve plate. The valve seat is installed in the valve hole of the valve body and is tightened by a wave spring. The center hole of one valve seat is connected to the liquid inlet on the valve body, and the center hole of the other valve seat is connected to the liquid outlet on the valve body. The valve body moves up and down with the piston rod, so that the control hole on the valve plate is connected or closed with the center holes of the two valve seats.

[0004] The traditional hydraulic flat valves on the market need to be closed manually when the pipeline is damaged and leaking. Most of the flat valves are located underground or in the wild, and closing them is very time-consuming and cumbersome, resulting in large amounts of liquid leakage and losses. Therefore, a flat valve is designed that can automatically close after a pipeline leak occurs. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a hydraulic flat valve to solve the technical problem that the traditional device cannot be closed automatically.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic flat valve, including a pipeline, a valve body is arranged outside the pipeline, and the inner wall of the pipeline is located in the middle of the valve body and is rotatably connected to a fan blade ring, a fixing plate is fixed to the bottom surface of the inner part of the valve body, the inner wall of the valve body and the pipeline are located above the fixing plate and are rotatably connected to a limiting rotating shaft, the same side of the fixing plate and the limiting rotating shaft is located above the limiting rotating shaft and is rotatably connected to a monitoring rotating shaft, and a transmission belt is sleeved between the monitoring rotating shaft and the limiting rotating shaft, the transmission belt cooperates with the top of the fan blade ring through the limiting rotating shaft, and the monitoring rotating shaft is away from the fixing plate. The side is connected with an inner rotating shaft, and the side of the inner rotating shaft away from the fixed plate is connected with an outer rotating shaft, the outer wall of the outer rotating shaft is sleeved with an adjusting wheel, and there is friction between the outer rotating shaft and the adjusting wheel, the inner sliding connection of the adjusting wheel is provided with a clamping block, and an auxiliary spring is connected between the clamping block and the adjusting wheel, the outer wall of the inner rotating shaft is connected with a volute spring, and a traction rope passing through the adjusting wheel is connected between the volute spring and the clamping block, the fixed plate is connected with a limiting block on the side facing the adjusting wheel, and two spring plates are connected inside the limiting block, the inward end of each spring plate is in contact with the outer wall of the adjusting wheel, and the spring plate cooperates with the clamping block.

[0007] By adopting the above technical solution, the liquid drives the fan blade ring to rotate through the pipeline, and the fan blade ring drives the monitoring shaft to rotate through the transmission belt. Under the action of centrifugal force, the block slides outward and collides with the spring plate, the adjusting wheel stops rotating, and the inner shaft continues to rotate to tighten the block, pulling the block back to a position flush with the adjusting wheel. At this time, the block does not collide with the spring plate, and the adjusting wheel continues to rotate. When the pipeline is damaged, the flow rate of the liquid inside the pipeline changes, the centrifugal force changes, the block moves and collides with the spring plate again, and the lower limit plate bends.

[0008] The utility model is further configured as follows: two soft rods are connected to the top surface of the limit block, the fixed plate is located above the adjusting wheel and is rotatably connected to two adjusting shafts on one side facing the adjusting wheel, and each soft rod passes through the corresponding adjusting shaft, and each soft rod is connected to an outward-facing block on the top end, two fixed blocks are connected to the fixed plate on the side facing the adjusting wheel, and the top surface of each fixed block contacts the corresponding bottom surface of the block, two limit grooves are provided inside the valve body, and each limit groove passes through the pipeline, a gate plate is slidably connected inside each of the limit grooves, and the two gate plates are respectively located at two ends of the blade ring, and the gate plates are located inside the pipeline and are provided with flow openings.

[0009] By adopting the above technical solution, after the limit plate bends, it drives the soft rod to rotate around the adjusting axis, so that the stop block moves and no longer contacts the limit plate, and is separated from the limit of the stop block. The limit plate drives the gate plate to move downward, and the flow port of the gate plate is separated from the pipeline, completing the closing of the gate plate.

[0010] The utility model is further configured as follows: the top surface of the fixed plate is connected to the limiting cylinder, and the bottom surface of the limiting cylinder contacts the top surface of the limiting plate, a limiting spring is connected between the top surface inside the limiting cylinder and the limiting plate, the outer wall of the limiting plate is threadedly connected with a threaded ring, and the threaded ring is also threadedly connected to the outer wall of the limiting cylinder, the outer wall of the threaded ring is threadedly connected to the inner wall of the valve body, the top surface of the valve body is rotatably connected with an adjusting switch passing through the valve body, and the bottom surface of the adjusting switch is rotatably connected to the top end of the limiting cylinder, a plurality of limiting rods are connected between the bottom surface of the adjusting switch and the bottom surface of the inside of the valve body, and the limiting rods rotatably pass through the threaded ring.

[0011] By adopting the above technical solution, when the gate is closed, the adjusting switch is first rotated in the reverse direction so that the threaded ring is threadedly connected with the limit plate, and then the adjusting switch is rotated forward, and the threaded ring drives the limit plate to rotate upward along the thread of the inner wall of the valve body. When the threaded ring moves upward and contacts the limit cylinder, the threaded ring is threadedly connected with the limit cylinder and continues to rotate, and the threaded ring disengages from the limit plate.

[0012] In summary, the utility model mainly has the following beneficial effects:

[0013] The utility model drives the fan blade ring to rotate through the liquid in the pipeline, and the fan blade ring drives the monitoring shaft to rotate through the transmission belt. Under the action of centrifugal force, the clamping block slides outward and collides with the spring plate, the adjusting wheel stops rotating, and the inner shaft continues to rotate to tighten the clamping block, and pulls the clamping block back to a position flush with the adjusting wheel. At this time, the clamping block does not collide with the spring plate, and the adjusting wheel continues to rotate. When the pipeline is damaged, the flow velocity of the liquid inside the pipeline changes, the centrifugal force changes, the clamping block moves and collides with the spring plate again, and the lower limit plate bends at this time. After the limit plate bends, it drives the soft rod to rotate around the adjusting shaft, so that the block moves and no longer contacts the limit plate, and is separated from the limit of the block. The limit plate drives the gate plate to move downward, and the flow port of the gate plate is separated from the pipeline, so that the equipment completes the automatic closing of the gate plate to prevent losses caused by large-scale leakage of liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is an overall side sectional view of the utility model;

[0016] Figure 3 It is an overall front cross-sectional view of the utility model;

[0017] Figure 4 For the utility model Figure 2 A magnified view of the structure at center A;

[0018] Figure 5 For the utility model Figure 2A magnified view of the structure at B in the middle;

[0019] Figure 6 For the utility model Figure 3 Enlarged view of the structure at C in the middle.

[0020] In the figure: 1. pipeline; 2. valve body; 3. fan blade ring; 4. gate; 5. flow port; 6. limit groove; 7. limit plate; 8. limit cylinder; 9. limit spring; 10. transmission belt; 11. limit shaft; 12. monitoring shaft; 13. inner shaft; 14. outer shaft; 15. scroll spring; 16. block; 17. spring plate; 18. limit block; 19. soft rod; 20. stopper; 21. fixed block; 22. fixed plate; 23. threaded ring; 24. limit rod; 25. traction rope; 26. adjustment switch; 27. adjustment shaft; 28. adjustment wheel; 29. ​​auxiliary spring. 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0022] The following describes an embodiment of the utility model based on its overall structure.

[0023] A hydraulically operated flat valve, such as Figure 1-6As shown, it includes a pipeline 1, a valve body 2 is arranged outside the pipeline 1, and the inner wall of the pipeline 1 is located in the middle of the valve body 2 and is rotatably connected to a blade ring 3, a fixing plate 22 is fixed to the bottom surface of the valve body 2, the inner wall of the valve body 2 and the upper part of the pipeline 1 are located between the fixing plate 22 and are rotatably connected to a limited rotation shaft 11, the same side of the fixing plate 22 and the limited rotation shaft 11 is located above the limited rotation shaft 11 and is rotatably connected to a monitoring rotation shaft 12, and a transmission belt 10 is sleeved between the monitoring rotation shaft 12 and the limited rotation shaft 11, and the transmission belt 10 is sleeved between the monitoring rotation shaft 12 and the limited rotation shaft 11. The driving belt 10 cooperates with the top of the fan blade ring 3 through the limiting rotating shaft 11, the side of the monitoring rotating shaft 12 away from the fixed plate 22 is connected to the inner rotating shaft 13, and the side of the inner rotating shaft 13 away from the fixed plate 22 is connected to the outer rotating shaft 14, the outer wall of the outer rotating shaft 14 is sleeved with an adjusting wheel 28, and there is friction between the outer rotating shaft 14 and the adjusting wheel 28, the inner sliding connection of the adjusting wheel 28 is connected to a card block 16, and an auxiliary spring 29 is connected between the card block 16 and the adjusting wheel 28, and the outer wall of the inner rotating shaft 13 is connected to The spiral spring 15 is connected with a traction rope 25 passing through the adjusting wheel 28 between the spiral spring 15 and the block 16. The fixed plate 22 is connected to the side of the adjusting wheel 28 with the limit block 18, and the inside of the limit block 18 is connected with two spring plates 17. The inner end of each spring plate 17 contacts the outer wall of the adjusting wheel 28, and the spring plate 17 cooperates with the block 16. The liquid drives the fan blade ring 3 to rotate through the pipeline 1, and the fan blade ring 3 drives the monitoring shaft 12 to rotate through the transmission belt 10. Under the action of centrifugal force, the block 16 slides outward and collides with the spring plate 17, and the adjusting wheel 28 stops rotating. The inner shaft 13 continues to rotate to tighten the block 16 and pulls the block 16 back to a position flush with the adjusting wheel 28. At this time, the block 16 does not collide with the spring plate 17, and the adjusting wheel 28 continues to rotate. When the pipeline 1 is damaged, the flow rate of the liquid in the pipeline 1 changes, the centrifugal force changes, the block 16 moves and collides with the spring plate 17 again, and the lower limit plate 7 bends.

[0024] The top surface of the limit block 18 is connected to two soft rods 19, and the side of the fixed plate 22 facing the adjusting wheel 28 is located above the adjusting wheel 28 and is rotatably connected to two adjusting shafts 27, and each soft rod 19 passes through the corresponding adjusting shaft 27, and the top of each soft rod 19 is connected to a stopper 20 facing outward, and the side of the fixed plate 22 facing the adjusting wheel 28 is connected to two fixed blocks 21, and the top surface of each fixed block 21 is in contact with the bottom surface of the corresponding stopper 20, and two limit grooves 6 are provided inside the valve body 2, and each limit groove 6 passes through the pipeline 1 , each limiting groove 6 is slidably connected with a gate plate 4, and the two gate plates 4 are respectively located at the two ends of the fan ring 3, and the gate plates 4 are located inside the pipeline 1 and have flow openings 5. The bottom end of the valve body 2 is located at each gate plate 4 and has a limiting groove 6. After the limiting plate 7 is bent, the soft rod 19 is driven to rotate around the adjusting shaft 27, so that the stopper 20 moves and no longer contacts the limiting plate 7, and is separated from the limit of the stopper 20. The limiting plate 7 drives the gate plate 4 to move downward, and the flow opening 5 of the gate plate 4 is separated from the pipeline 1, completing the closing of the gate plate 4.

[0025] The top surface of the fixed plate 22 is connected to the limiting cylinder 8, and the bottom surface of the limiting cylinder 8 is in contact with the top surface of the limiting plate 7. The limiting spring 9 is connected between the top surface inside the limiting cylinder 8 and the limiting plate 7. The outer wall of the limiting plate 7 is threadedly connected with a threaded ring 23, and the threaded ring 23 is also threadedly connected to the outer wall of the limiting cylinder 8. The outer wall of the threaded ring 23 is threadedly connected to the inner wall of the valve body 4. The top surface of the valve body 2 is rotatably connected with an adjusting switch 26 passing through the valve body 2, and the bottom surface of the adjusting switch 26 is rotatably connected to the top of the limiting cylinder 8. The bottom surface of the adjusting switch 26 There are multiple limit rods 24 connected between the bottom surface of the valve body 2, and the limit rods 24 rotate and penetrate the threaded ring 23. When the gate 4 is closed, the adjusting switch 26 is first rotated in the opposite direction to make the threaded ring 23 threadedly connected with the limit plate 7. Then the adjusting switch 26 is rotated forward, and the threaded ring 23 drives the limit plate 7 to rotate upward along the thread of the inner wall of the valve body 2. When the threaded ring 23 moves upward to contact the limit tube 8, the threaded ring 23 is threadedly connected with the limit tube 8 at this time, and continues to rotate, and the threaded ring 23 disengages from the limit plate 7.

[0026] Working principle: When the gate 4 is closed, firstly, the regulating switch 26 is rotated in the reverse direction, and the threaded ring 23 moves downward along the threaded rotation of the inner wall of the valve body 2, and finally the threaded ring 23 is threadedly connected with the limit plate 7. Then, the regulating switch 26 is rotated forward, and the threaded ring 23 drives the limit plate 7 to move upward along the threaded rotation of the inner wall of the valve body 2. When the threaded ring 23 moves upward to contact with the limit cylinder 8, the inner edge of the limit plate 7 pushes the stopper 20 back and then contacts with the stopper 20, and the threaded ring 23 continues to rotate. The rotor is threadedly connected with the limit cylinder 8. At this time, the gate 4 is opened, and the liquid drives the blade ring 3 to rotate through the pipeline 1. The blade ring 3 drives the monitoring shaft 12 to rotate through the limit shaft 11 and the transmission belt 10. The monitoring shaft 12 drives the adjusting wheel 28 to rotate through the outer shaft 14. The auxiliary spring 29 is used for the preliminary positioning of the block 16. Under the action of centrifugal force, the block 16 slides outward and collides with the spring plate 17, the adjusting wheel 28 stops rotating, the inner shaft 13 continues to rotate, and the scroll spring 15 rotates to pull the traction rope 25 is tightened and the block 16 is pulled back, and the block 16 is pulled back to a position flush with the adjusting wheel 28. At this time, the block 16 does not collide with the spring plate 17, and the adjusting wheel 28 continues to rotate, and the adjusting switch 26 continues to rotate forward, and the threaded ring 23 is separated from the limit plate 7. When the pipeline 1 is damaged, the water pressure below the leaking end will drop significantly, because the liquid is lost through the hole, resulting in a decrease in the internal pressure of the pipeline 1, and the water pressure above the leaking end will rise. Because the liquid in the pipeline 1 is lost, the water pressure upstream of the valve will rise to compensate for the loss of the leaking end. The flow rate of the liquid in the pipeline 1 changes, the centrifugal force changes, and the block 16 moves and collides with the spring plate 17 again. At this time, the lower limit plate 7 bends. After the limit plate 7 bends, it drives the soft rod 19 to rotate around the adjusting shaft 27, so that the stopper 20 moves and no longer contacts the limit plate 7, and is separated from the limit of the stopper 20. The limit plate 7 drives the gate plate 4 to move downward, and the flow port 5 of the gate plate 4 is separated from the pipeline 1, completing the closing of the gate plate 4.

[0027] On the basis of the above structure, in this embodiment, although the embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model, and it is not a limitation of the utility model. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations to the embodiment without creative contribution as needed without departing from the principle and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A hydraulically operated flat valve, comprising a pipeline (1), characterized in that: The pipe (1) is provided with a valve body (2) on its outer sleeve, and the inner wall of the pipe (1) is located in the middle of the valve body (2) and is rotatably connected to a blade ring (3), a fixing plate (22) is fixed to the bottom surface of the valve body (2), and a limiting rotating shaft (11) is rotatably connected between the inner wall of the valve body (2) and the pipe (1) and located above the fixing plate (22), and a monitoring rotating shaft (12) is rotatably connected above the limiting rotating shaft (11) on the same side of the fixing plate (22) and the limiting rotating shaft (11), and a transmission belt (10) is sleeved between the monitoring rotating shaft (12) and the limiting rotating shaft (11), and the transmission belt (10) is matched with the top of the blade ring (3) through the limiting rotating shaft (11), and the monitoring rotating shaft (12) is connected to the inner rotating shaft (13) on the side away from the fixing plate (22), and the inner rotating shaft (13) is on the side away from the fixing plate (22). An outer rotating shaft (14) is connected, the outer wall of the outer rotating shaft (14) is sleeved with an adjusting wheel (28), and there is friction between the outer rotating shaft (14) and the adjusting wheel (28), the interior of the adjusting wheel (28) is slidably connected with a clamping block (16), and an auxiliary spring (29) is connected between the clamping block (16) and the adjusting wheel (28), the outer wall of the inner rotating shaft (13) is connected with a volute spring (15), and a traction rope (25) passing through the adjusting wheel (28) is connected between the volute spring (15) and the clamping block (16), the fixed plate (22) is connected with a limiting block (18) on one side facing the adjusting wheel (28), and two spring plates (17) are connected inside the limiting block (18), and an inward end of each of the spring plates (17) contacts the outer wall of the adjusting wheel (28), and the spring plate (17) matches the clamping block (16).

2. A hydraulic flat valve according to claim 1, characterized in that: The top surface of the limit block (18) is connected to two soft rods (19); the side of the fixed plate (22) facing the adjusting wheel (28) is located above the adjusting wheel (28) and is rotatably connected to two adjusting shafts (27); each soft rod (19) passes through a corresponding adjusting shaft (27); the top of each soft rod (19) is connected to an outward-facing stopper (20); the side of the fixed plate (22) facing the adjusting wheel (28) is connected to two fixed blocks (21); the top surface of each fixed block (21) contacts the bottom surface of the corresponding stopper (20).

3. A hydraulic flat valve according to claim 2, characterized in that: Two limiting grooves (6) are provided inside the valve body (2), and each limiting groove (6) penetrates the pipeline (1). A gate plate (4) is slidably connected inside each limiting groove (6), and the two gate plates (4) are respectively located at two ends of the fan blade ring (3). The gate plates (4) are located inside the pipeline (1) and are provided with flow ports (5).

4. A hydraulically operated flat valve according to claim 3, characterized in that: The top surface of the fixing plate (22) is connected to the limiting cylinder (8), and the bottom surface of the limiting cylinder (8) contacts the top surface of the limiting plate (7); a limiting spring (9) is connected between the top surface inside the limiting cylinder (8) and the limiting plate (7); a threaded ring (23) is threadedly connected to the outer wall of the limiting plate (7), and the threaded ring (23) is also threadedly connected to the outer wall of the limiting cylinder (8); the outer wall of the threaded ring (23) is threadedly connected to the inner wall of the valve body (2).

5. The hydraulic flat valve according to claim 1, characterized in that: The top surface of the valve body (2) is rotatably connected to an adjusting switch (26) passing through the valve body (2), and the bottom surface of the adjusting switch (26) is rotatably connected to the top end of the limiting cylinder (8). A plurality of limiting rods (24) are connected between the bottom surface of the adjusting switch (26) and the bottom surface inside the valve body (2), and the limiting rods (24) rotatably penetrate the threaded ring (23).

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