High-stability regulating valve assembly

Abstract

The utility model discloses a high-stability regulating valve assembly which comprises a conveying pipeline, flange connecting discs are installed at the two ends of the conveying pipeline, a regulating valve body is fixedly installed on the outer side of the conveying pipeline and communicated with the conveying pipeline, a water pumping cylinder and a water draining cylinder are fixedly installed on the outer side of the conveying pipeline respectively, and the water pumping cylinder is communicated with the water draining cylinder. When the water pump is used, the water pump is easy to operate, the driving mechanism, the spring telescopic rod, the groove, the first piston and the like are arranged, so that the adjusting valve body cannot be started and stopped immediately, water flow is slowly cut off, and the water pump is convenient to use. And meanwhile, by arranging a water lifting cylinder, a water lifting valve, a buffering mechanism, a communicating pipe, a water drainage cylinder, a water drainage valve and other devices, pressure relief is conducted on the initial end of the conveying pipeline, and therefore the purposes of reducing impact force generated by the water hammer effect and enhancing the stability of the device are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a high-stability regulating valve component. Background Art

[0002] Control valves play a very important role in the automatic control of modern factories. The production of these factories depends on the correct distribution and control of the flowing medium.

[0003] When the valve of the regulating valve is closed quickly, the water flow continues to flow forward due to inertia, but is blocked by the valve, causing the pressure to rise rapidly. Conversely, when the valve is opened quickly, the originally stationary water suddenly accelerates to flow, forming a low-pressure area locally, thus producing a water hammer effect.

[0004] The water hammer effect will produce a huge pressure shock, which may cause damage, deformation or loosening of the internal components of the control valve. Long-term and repeated water hammer shocks will gradually weaken the structural strength of the control valve, making it more prone to failure and reducing stability. Utility Model Content

[0005] The utility model aims to solve the problems in the background technology and proposes a high-stability regulating valve component.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A high-stability regulating valve assembly comprises a delivery pipeline, flange connecting plates are installed at both ends of the delivery pipeline, a regulating valve body is fixedly installed on the outer side of the delivery pipeline, and the regulating valve body is connected to the delivery pipeline, a water lifting cylinder and a drainage cylinder are respectively fixedly installed on the outer side of the delivery pipeline, and the water lifting cylinder and the drainage cylinder are both connected to the delivery pipeline, the water lifting cylinder is connected to the drainage cylinder through a connecting pipe, a buffer mechanism is installed in the water lifting cylinder, the bottom end of the water lifting cylinder is rotatably connected to the water lifting valve through a torsion spring, the bottom end of the drainage cylinder is rotatably connected to the drainage valve through a torsion spring, an extension plate is slidably connected in the regulating valve body, the regulating valve body drives the extension plate to slide in the regulating valve body through a driving mechanism, an extension rod is fixedly installed on the bottom surface of the extension plate, a sealing material is installed in the regulating valve body, and the extension rod penetrates the sealing material and extends downward, a spring telescopic rod is fixedly installed on the bottom end of the extension rod, a first piston is fixedly installed on the bottom end of the spring telescopic rod, an arc-shaped partition is fixedly installed in the delivery pipeline, a groove is opened on the arc-shaped partition, and the position of the arc-shaped partition corresponds to the groove.

[0008] Preferably, the driving mechanism includes a threaded rod, and the threaded rod is rotatably connected in the regulating valve body, a handwheel is fixedly installed at the bottom end of the regulating valve body, a threaded sleeve is threadedly connected on the threaded rod, and the threaded sleeve is slidably connected in the threaded rod, a plurality of connecting columns are fixedly installed at the bottom end of the threaded sleeve, and the other end of each connecting column is fixedly connected to the extension plate.

[0009] Preferably, a square cavity is provided in the regulating valve body, and the threaded sleeve is slidably connected in the square cavity, and a baffle is fixedly installed at one end of the threaded rod away from the hand wheel.

[0010] Preferably, the buffer mechanism comprises a compression spring, and the compression spring is fixedly mounted on the top end of the water-lifting cylinder, and a second piston is fixedly mounted on the bottom end of the compression spring.

[0011] Preferably, the rotation direction of the water lift valve is upward from the bottom end of the water lift cylinder, and the rotation direction of the drain valve is downward from the top end of the drain cylinder.

[0012] Preferably, the height of the connection point between the connecting pipe and the water-lifting cylinder is smaller than the height of the second piston.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model sets a driving mechanism, a spring telescopic rod, a groove, a first piston and other devices, so that when the hand wheel is turned, the spring telescopic rod is driven to contact the first piston and the groove through the cooperation of the threaded sleeve and the threaded rod, and the hand wheel is continuously turned to make the spring telescopic rod continuously contract until the first piston completely closes the groove, so that the regulating valve body cannot be started and stopped immediately, and the water flow is slowly cut off, thereby reducing the purpose of water hammer effect.

[0015] 2. The utility model sets up a water-lifting cylinder, a water-lifting valve, a buffer mechanism, a connecting pipe, a drain cylinder, a drain valve and other devices, so that when the regulating valve body is completely closed, the water flow knocks open the water-lifting valve and enters the water-lifting cylinder, the water flow is buffered by the buffer mechanism, and enters the drain cylinder and then the delivery pipe through the connecting pipe, so as to relieve the pressure at the starting end of the delivery pipe, thereby reducing the impact force caused by the water hammer effect and enhancing the stability of the device.

[0016] In summary, the utility model is simple to operate when in use. The drive mechanism, spring telescopic rod, groove, first piston and other devices are arranged so that the regulating valve body cannot be started and stopped immediately, but the water flow is slowly cut off, thereby reducing the purpose of water hammer effect. At the same time, by arranging the water lifting cylinder, water lifting valve, buffer mechanism, connecting pipe, drainage cylinder, drainage valve and other devices, the pressure at the starting end of the conveying pipeline is relieved, thereby reducing the impact force caused by the water hammer effect and enhancing the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a high-stability regulating valve assembly proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of a delivery pipeline of a high-stability regulating valve assembly proposed by the utility model;

[0019] Figure 3 The utility model provides a schematic cross-sectional structure diagram of a water-lifting cylinder and a water-discharging cylinder of a high-stability regulating valve assembly.

[0020] In the figure: 1 delivery pipeline, 2 flange connection plate, 3 water lifting cylinder, 4 connecting pipe, 5 drainage cylinder, 6 regulating valve body, 7 hand wheel, 8 threaded sleeve, 9 threaded rod, 10 baffle, 11 extension plate, 12 extension rod, 13 sealing material, 14 spring telescopic rod, 15 first piston, 16 arc partition, 17 groove, 18 compression spring, 19 second piston, 20 water lifting valve, 21 drainage valve. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-3 A high-stability regulating valve assembly comprises a delivery pipeline 1, both ends of which are provided with flange connection plates 2 for facilitating the connection of the delivery pipeline 1, a regulating valve body 6 is fixedly installed on the outer side of the delivery pipeline 1, and the regulating valve body 6 is communicated with the delivery pipeline 1, a water-lifting cylinder 3 and a drainage cylinder 5 are respectively fixedly installed on the outer side of the delivery pipeline 1, and the water-lifting cylinder 3 and the drainage cylinder 5 are both communicated with the delivery pipeline 1, the water-lifting cylinder 3 is communicated with the drainage cylinder 5 through a connecting pipe 4, a buffer mechanism is installed in the water-lifting cylinder 3, the buffer mechanism comprises a compression spring 18, and the compression spring 18 is fixedly installed on the top of the water-lifting cylinder 3, and a second piston 19 is fixedly installed on the bottom end of the compression spring 18, it is worth noting that when the regulating valve body 6 cuts off the water flow, the water flow in the delivery pipeline 1 is turbulent, and the water flow entering the water-lifting cylinder 3 can be buffered by the compression spring 18 to avoid damage to the water-lifting cylinder 3;

[0023] The bottom end of the water-lifting cylinder 3 is rotatably connected to a water-lifting valve 20 through a torsion spring, and the bottom end of the drainage cylinder 5 is rotatably connected to a drainage valve 21 through a torsion spring. The rotation direction of the water-lifting valve 20 is to rotate upward from the bottom end of the water-lifting cylinder 3, and the rotation direction of the drainage valve 21 is to rotate downward from the top end of the drainage cylinder 5. The height of the connection point between the connecting pipe 4 and the water-lifting cylinder 3 is less than the height of the second piston 19. It is worth noting that the direction of water flow in the conveying pipeline 1 is to flow from the water-lifting cylinder 3 to the drainage cylinder 5, and due to the action of the torsion spring, when the regulating valve body 6 is normally opened, the water flow will not knock open the torsion spring and enter the water-lifting cylinder 3. At the same time, the setting of the drainage valve 21, its rotation connection point is close to one end of the water-lifting cylinder 3, and then the water flow will hit the drainage valve 21 when it flows to close it;

[0024] An extension plate 11 is slidably connected in the regulating valve body 6, and the regulating valve body 6 drives the extension plate 11 to slide in the regulating valve body 6 through a driving mechanism. The driving mechanism includes a threaded rod 9, and the threaded rod 9 is rotatably connected in the regulating valve body 6. A handwheel 7 is fixedly installed at the bottom end of the regulating valve body 6, and a threaded sleeve 8 is threadedly connected to the threaded rod 9, and the threaded sleeve 8 is slidably connected in the threaded rod 9. A plurality of connecting columns are fixedly installed at the bottom end of the threaded sleeve 8, and the other end of each connecting column is fixedly connected to the extension plate 11. A square cavity is opened in the regulating valve body 6, and the threaded sleeve 8 is slidably connected in the square cavity. A baffle 10 is fixedly installed at one end of the threaded rod 9 away from the handwheel 7. It is worth noting that the threaded rod 9 can be driven to rotate by rotating the handwheel 7, and then the threaded sleeve 8 is limited by the square cavity, so that it can slide up and down, but cannot rotate, and then the threaded sleeve 8 drives the plurality of connecting columns to make the extension plate 11 slide in the regulating valve body 6;

[0025] An extension rod 12 is fixedly installed on the bottom surface of the extension plate 11, a sealing material 13 is installed in the regulating valve body 6, and the extension rod 12 penetrates the sealing material 13 and extends downward, and the water flow in the delivery pipe 1 is isolated by the sealing material 13. A spring telescopic rod 14 is fixedly installed at the bottom end of the extension rod 12, and a first piston 15 is fixedly installed at the bottom end of the spring telescopic rod 14. An arc-shaped partition 16 is fixedly installed in the delivery pipe 1, and a groove 17 is opened on the arc-shaped partition 16, and the arc-shaped partition 16 corresponds to the position of the groove 17, and the first piston 15 can be nested in the groove 17 to form a closure. When the hand wheel 7 is turned, the spring telescopic rod 14 and the first piston 15 are driven to move downward by the extension rod 12. When the first piston 15 contacts the groove 17, the impulse of the water flow is large and can still squeeze the spring telescopic rod 14 for slow circulation. With the continuous rotation of the hand wheel 7, the first piston 15 slowly increases the downward pressure until it is greater than the impulse of the water flow, thereby closing the regulating valve body 6.

[0026] When the utility model is used, the device is first connected to the designated pipeline through the flange connection plates 2 at both ends of the delivery pipeline 1. At the same time, one end where the water lifting cylinder 3 is located is the starting direction of the water flow. When the water flow needs to be cut off, the hand wheel 7 can be turned, and the threaded sleeve 8 and the threaded rod 9 can be cooperated to drive the extension plate 11 to move downward, so that the extension rod 12 drives the spring telescopic rod 14 and the first piston 15 to approach the groove 17. Then, the hand wheel 7 is continuously turned to increase the downward squeezing force of the first piston 15, so that the first piston 15 slowly increases the downward pressure until it is greater than the impulse of the water flow, so that the regulating valve body 6 is closed. Through the action of the spring telescopic rod 14, the regulating valve body 6 can be slowly closed instead of being started and stopped immediately. The change of the water flow speed is relatively gentle, and the pressure fluctuation caused by the inertia of the water will be reduced, thereby reducing the water hammer effect.

[0027] At the same time, when the regulating valve body 6 is completely closed, the water flow pressure in the section where the water pumping cylinder 3 is located increases. When the water flow pressure is greater than the torsion spring stress installed on the water pumping valve 20, the water pumping valve 20 is knocked open to allow the water flow to enter the water pumping cylinder 3, and the pressure is relieved on one end of the water pipe where the water pumping cylinder 3 is located. Then the water flow hits the second piston 19 and is buffered by the compression spring 18, and then enters the drainage cylinder 5 through the connecting pipe 4, and opens the drainage valve 21 by the gravity of the water flow to allow the water flow to re-enter the delivery pipeline 1, thereby reducing the influence of the water hammer effect on the device and enhancing the stability of the device. When the water flow pressure is stable, the water pumping valve 20 will be closed again.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-stability regulating valve assembly, comprising a delivery pipeline (1), characterized in that: Both ends of the delivery pipeline (1) are equipped with flange connection plates (2); a regulating valve body (6) is fixedly installed on the outer side of the delivery pipeline (1), and the regulating valve body (6) is connected to the delivery pipeline (1); a water-lifting cylinder (3) and a water-draining cylinder (5) are respectively fixedly installed on the outer side of the delivery pipeline (1), and the water-lifting cylinder (3) and the water-draining cylinder (5) are both connected to the delivery pipeline (1); the water-lifting cylinder (3) is connected to the water-draining cylinder (5) through a connecting pipe (4); a buffer mechanism is installed in the water-lifting cylinder (3); the bottom end of the water-lifting cylinder (3) is rotatably connected to a water-lifting valve (20) through a torsion spring; the bottom end of the water-draining cylinder (5) is rotatably connected to a water-draining valve (21) through a torsion spring; and a sliding spring (24) is installed in the regulating valve body (6). An extension plate (11) is connected, the regulating valve body (6) drives the extension plate (11) to slide inside the regulating valve body (6) through a driving mechanism, an extension rod (12) is fixedly mounted on the bottom surface of the extension plate (11), a sealing material (13) is installed inside the regulating valve body (6), and the extension rod (12) penetrates the sealing material (13) and extends downward, a spring telescopic rod (14) is fixedly mounted on the bottom end of the extension rod (12), and a first piston (15) is fixedly mounted on the bottom end of the spring telescopic rod (14), and an arc-shaped partition (16) is fixedly mounted inside the conveying pipeline (1), a groove (17) is formed on the arc-shaped partition (16), and the positions of the arc-shaped partition (16) and the groove (17) correspond to each other.

2. A high stability regulating valve assembly according to claim 1, characterized in that: The driving mechanism comprises a threaded rod (9), and the threaded rod (9) is rotatably connected in the regulating valve body (6); a hand wheel (7) is fixedly mounted on the bottom end of the regulating valve body (6); a threaded sleeve (8) is threadedly connected on the threaded rod (9), and the threaded sleeve (8) is slidably connected in the threaded rod (9); a plurality of connecting columns are fixedly mounted on the bottom end of the threaded sleeve (8), and the other end of each connecting column is fixedly connected to the extension plate (11).

3. A high stability regulating valve assembly according to claim 2, characterized in that: A square cavity is provided in the regulating valve body (6), and a threaded sleeve (8) is slidably connected in the square cavity. A baffle (10) is fixedly mounted on one end of the threaded rod (9) away from the hand wheel (7).

4. A high stability regulating valve assembly according to claim 3, characterized in that: The buffer mechanism comprises a compression spring (18), and the compression spring (18) is fixedly mounted on the top end of the water-lifting cylinder (3), and a second piston (19) is fixedly mounted on the bottom end of the compression spring (18).

5. A high stability regulating valve assembly according to claim 4, characterized in that: The rotation direction of the water lift valve (20) is from the bottom end of the water lift cylinder (3) upwards, and the rotation direction of the water drain valve (21) is from the top end of the water drain cylinder (5) downwards.

6. A high stability regulating valve assembly according to claim 5, characterized in that: The height of the connection point between the connecting pipe (4) and the water-lifting cylinder (3) is less than the height of the second piston (19).

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