Counter weight type valve operating mechanism with spring compensation function

Abstract

The invention relates to the technical field of fluid control equipment, and discloses a heavy hammer type valve operating mechanism with a spring compensation function, which solves the problems proposed in the background art, and comprises an oil cylinder module, a heavy hammer module and a spring adjusting mechanism, the oil cylinder module comprises a cylinder body, a piston, a piston rod, a rod cavity and a rodless cavity, a compression spring is arranged in the rod cavity, one end of the compression spring is fixed to the adjusting pressing plate, the other end of the compression spring is connected with the piston, the oil cylinder module is the core part of the hydraulic cylinder, the compression spring is arranged in the rod cavity, one end of the spring is fixed to the adjusting pressing plate, and the other end of the spring is connected with the piston. According to the design, the spring can provide extra driving force when the valve is closed, and the problems that according to a traditional heavy hammer type hydraulic valve, the size and mass of a heavy hammer are too large, impact and sealing are poor, and dynamic response is insufficient can be effectively solved; the method has the remarkable advantages of reducing weight and cost, optimizing space, improving impact resistance and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of fluid control devices, and particularly relates to a weight type valve operating mechanism with a spring compensation function. Background Art

[0002] Traditional weight type hydraulic valves mainly rely on the gravity of the weight or the lever moment to achieve the closing control of the valve, and there are many limitations:

[0003] The weight has an overly large volume and mass, resulting in a bulky device, difficult installation and maintenance, increased manufacturing costs, and poor applicability in scenarios with limited installation space; the instantaneous impact force generated when the weight acts during valve closing can easily cause problems such as valve body wear, valve shaft deformation, and seal damage; the dynamic response is insufficient, and the response speed is slow at the initial stage of valve closing, increasing system risks. Therefore, we propose a weight type valve operating mechanism with a spring compensation function. Summary of the Invention

[0004] To solve the problems raised in the background art, the present invention provides the following technical solution: A weight type valve operating mechanism with a spring compensation function, including an oil cylinder module, a weight module, and a spring adjustment mechanism.

[0005] The oil cylinder module includes a cylinder body, a piston, a piston rod, a rod chamber, and a rodless chamber. A compression spring is arranged in the rod chamber. One end of the compression spring is fixed on an adjusting pressing plate, and the other end is connected to the piston. The oil cylinder module is the core part of the present invention. The compression spring arranged in the rod chamber, with one end fixed on the adjusting pressing plate and the other end connected to the piston, enables the spring to provide additional driving force when the valve closes, assisting the weight to complete the closing action.

[0006] The weight module includes a lightweight weight. The lightweight weight is connected to the piston rod through a crank. The resilience of the compression spring assists the lightweight weight to complete the valve closing action. The weight module adopts a lightweight design and is connected to the piston rod through a crank. This design not only reduces the weight and volume of the device but also uses the resilience of the spring to assist the weight to complete the valve closing action, improving the closing efficiency. The spring adjustment mechanism is used to adjust the pre-tightening force of the compression spring to adapt to different working conditions. This enables the operating mechanism to be flexibly applied to various scenarios.

[0007] Preferably, the cylinder module further includes a hydraulic oil circuit system. The rodless chamber is connected to a hydraulic control system. The hydraulic oil circuit system includes an oil pump, a motor, a relief valve, a check valve, a globe valve, an accumulator, a directional control valve, and a flow control valve. The hydraulic oil circuit system is used to control the opening and closing actions of the cylinder module. These components work together to ensure accurate and reliable hydraulic control of the cylinder module. For example, the oil pump and the motor provide power, the relief valve is used to control the pressure, and the directional control valve is used to change the oil flow direction, etc. By introducing the hydraulic oil circuit system, the operating mechanism not only relies on the mechanical structure to control the valve, but also combines the hydraulic system to provide more accurate and reliable control.

[0008] Preferably, the hydraulic oil circuit system further includes an electro-hydraulic relief valve, an electromagnetic ball valve, a cartridge valve assembly, a high-pressure hose, an electro-hydraulic directional control valve, a pilot-operated check valve, a one-way throttle valve, a pressure gauge switch, a pressure controller, a pressure transmitter, a pressure gauge, a bypass valve cylinder, a locking cylinder, a main cylinder, a drain valve, a level transmitter, an air filter, a hand pump, a return oil tank, a screen filter, a return oil filter, a level and temperature gauge, and a globe valve. By introducing these additional components, the hydraulic oil circuit system can achieve more precise control. The electro-hydraulic relief valve and the electromagnetic ball valve are used to achieve remote control and automated operation. The pressure controller and the pressure transmitter are used to achieve accurate monitoring and adjustment of the pressure. The level transmitter is used to monitor the oil tank level, etc. The addition of these components makes the hydraulic oil circuit system more complete and can meet the valve control requirements under complex working conditions.

[0009] Preferably, the spring adjustment mechanism includes an adjustment screw and a lock nut. The adjustment screw is used to adjust the pre-tightening force of the compression spring, and the lock nut is used to fix the position of the adjustment screw, so that the operator can conveniently adjust the pre-tightening force of the compression spring according to the actual working condition requirements, thereby optimizing the closing performance of the valve. Through the design of the adjustment screw and the lock nut, the operator can quickly adjust the pre-tightening force of the spring and ensure the stability of the adjusted state through the lock nut, improving the convenience and reliability of the operation.

[0010] Preferably, the weight and volume of the lightweight weight are smaller than those of the weight in the traditional weight-type hydraulic valve. By using the lightweight weight, the overall weight and volume of the equipment can be significantly reduced, the material cost and transportation cost can be lowered, and at the same time, the installation flexibility and applicability of the equipment can be improved. It is clearly pointed out that the lightweight weight has a smaller weight and volume compared with the weight in the traditional weight-type hydraulic valve.

[0011] Preferably, when the valve is opened, hydraulic oil enters the rodless cavity to push the piston rod out, and the compression spring is compressed to store energy. The hydraulic oil entering the rodless cavity to push the piston rod out and the compression spring being compressed to store energy at the same time provide the necessary energy reserve for the closing of the valve. The energy stored by the compression spring during the opening process, by converting hydraulic energy into the elastic potential energy of the spring, provides power support for the subsequent closing action. During the opening process, the piston rod is pushed out by the pressure of the hydraulic oil, and at the same time the compression spring stores energy, ensuring the smoothness and reliability of the opening process.

[0012] Preferably, when the valve is closed, the rodless cavity releases pressure, and the combined action of the resilience of the compression spring and the gravity of the lightweight weight drives the piston to retract. After the rodless cavity releases pressure, the combined action of the resilience of the compression spring and the gravity of the lightweight weight drives the piston to retract. This process realizes the rapid closing of the valve. Through this synergistic effect, the closing speed and reliability of the valve are improved, and at the same time, the dependence on the weight of the weight is reduced.

[0013] Preferably, during the opening process of the valve, by monitoring the pressure in the rodless cavity, the pre-tightening force or hydraulic flow rate of the spring adjustment mechanism is adjusted in real time. This dynamic adjustment mechanism can effectively avoid the impact caused by too fast opening speed, improve the operation stability and service life of the equipment. By adjusting the spring pre-tightening force or hydraulic flow rate in real time, the mechanical impact during valve opening is reduced, and the service life of the equipment is extended.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] During operation, when the valve needs to be opened, hydraulic oil enters the rodless cavity of the cylinder through the hydraulic oil circuit system. The oil pump and motor in the hydraulic oil circuit system provide power for the transportation of hydraulic oil to ensure that the hydraulic oil can smoothly enter the rodless cavity. After the hydraulic oil enters the rodless cavity, it generates pressure to push the piston and piston rod to extend outwards. The extension of the piston rod drives the lightweight hammer connected to it to move together through the crank, thereby gradually opening the valve. During the extension of the piston rod, the compression spring in the rod chamber is further compressed. At this time, the compression spring stores elastic potential energy, preparing for the subsequent valve closing action. When the valve needs to be closed, the hydraulic oil circuit system controls the release of pressure of the hydraulic oil in the rodless cavity. The pressure in the rodless cavity decreases, causing the piston to lose the driving force to extend outwards. At this time, the compression spring in the rod chamber begins to rebound, releasing the previously stored elastic potential energy and generating a resilience force. At the same time, the gravity of the lightweight hammer itself also generates an inward pulling force on the piston. The combined action of the resilience force of the compression spring and the gravity of the lightweight hammer drives the piston and piston rod to quickly retract. The quick retraction of the piston rod drives the lightweight hammer to move through the crank, quickly closing the valve. This way of the spring and hammer working together significantly shortens the response time of valve closing, improves the closing speed, and enhances the dynamic performance of the system. During the valve opening process, by monitoring the pressure in the rodless cavity, the pre-tightening force of the spring adjustment mechanism or the hydraulic flow rate is adjusted in real time. Components such as pressure sensors, pressure controllers, and pressure transmitters in the hydraulic oil circuit system are used to monitor the pressure changes in the rodless cavity. If it is detected that the pressure in the rodless cavity is too high, it may cause the valve to open too fast, resulting in mechanical shock. At this time, by adjusting the pre-tightening force of the spring adjustment mechanism or adjusting the opening of components such as speed control valves and one-way throttle valves in the hydraulic oil circuit system, the flow rate of the hydraulic oil is controlled to reduce the extension speed of the piston rod and avoid the impact when the valve opens. Through this dynamic balance and adjustment mechanism, the operating mechanism can flexibly adjust the opening and closing speeds of the valve according to different working conditions, ensuring the smoothness and reliability of the valve operation process, improving the adaptability and service life of the equipment, and effectively solving problems such as the excessive volume and mass of the traditional heavy hammer type hydraulic valve, impact and sealing problems, and insufficient dynamic response. It has significant advantages such as weight reduction and cost reduction, space optimization, and improved impact resistance. Brief Description of the Drawings

[0016] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the cylinder structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the hydraulic principle in the valve opening state of the present invention;

[0019] Figure 3 This is a schematic diagram of the hydraulic principle in the valve-closed state of the present invention;

[0020] Figure 4 This is a schematic diagram of the weight-operated mechanism;

[0021] Figure 5 This is a schematic diagram of the spring adjustment mechanism of the present invention;

[0022] Figure 6 This is a schematic diagram of the hydraulic principle of the improved weight-controlled butterfly valve of the present invention;

[0023] In the figure: 1. Oil cylinder module; 101. Cylinder block; 102. Piston; 103. Piston rod; 104. Rod chamber; 105. Rodless chamber; 106. Compression spring; 107. Adjusting pressure plate; 2. Weight module; 201. Lightweight weight; 202. Crank; 3. Spring adjustment mechanism; 301. Adjusting screw; 302. Locking nut; 401. Oil pump; 402. Motor; 403. Relief valve; 404. Check valve; 405. Globe valve; 406. Accumulator; 407. Directional control valve; 408. Flow control valve; 4. Electro-hydraulic relief valve; 5. Electro-magnetic ball valve; 6. Cartridge valve assembly; 9. High-pressure hose; 10. Electro-magnetic directional control valve; 11. Hydraulic check valve; 12. One-way throttle valve; 13. Pressure gauge switch; 14. Pressure controller; 15. Pressure transmitter; 16. Pressure gauge; 20. Bypass valve oil cylinder; 21. Locking oil cylinder; 22. Main oil cylinder; 23. Drain valve; 24. Liquid level transmitter; 25. Air filter; 26. Hand pump; 27. Return oil tank; 28. Screen filter; 29. Return oil filter; 30. Liquid level and liquid temperature gauge; 31. Globe valve. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0025] It is composed of Figure 1-6 As shown, the present invention includes an oil cylinder module 1, a weight module 2 and a spring adjustment mechanism 3.

[0026] The oil cylinder module 1 includes a cylinder block 101, a piston 102, a piston rod 103, a rod chamber 104, and a rodless chamber 105. A compression spring 106 is arranged in the rod chamber 104. One end of the compression spring 106 is fixed on an adjusting pressure plate 107, and the other end is connected to the piston 102. The oil cylinder module is the core part of the present invention. A compression spring is arranged in the rod chamber. One end of the spring is fixed on the adjusting pressure plate, and the other end is connected to the piston. This design enables the spring to provide an additional driving force when the valve is closed, assisting the weight to complete the closing action.

[0027] The weight module 2 includes a lightweight weight 201. The lightweight weight 201 is connected to the piston rod 103 through a crank 202. The resilience of the compression spring 106 assists the lightweight weight 201 to complete the valve closing action. The weight module adopts a lightweight design and is connected to the piston rod through a crank. This design not only reduces the weight and volume of the equipment, but also assists the weight to complete the valve closing action through the resilience of the spring, improving the closing efficiency. The spring adjusting mechanism is used to adjust the pre-tightening force of the compression spring to adapt to different working conditions. This enables the operating mechanism to be flexibly applied to various scenarios.

[0028] The oil cylinder module 1 further includes a hydraulic oil circuit system. The rodless chamber 105 is connected to a hydraulic control system. The hydraulic oil circuit system includes an oil pump 401, a motor 402, a relief valve 403, a check valve 404, a stop valve 405, an accumulator 406, a directional control valve 407, and a speed control valve 408. The hydraulic oil circuit system is used to control the opening and closing actions of the oil cylinder module. These components work together to ensure the precise and reliable hydraulic control of the oil cylinder module. For example, the oil pump and the motor provide power, the relief valve is used to control the pressure, and the directional control valve is used to change the oil flow direction, etc. By introducing the hydraulic oil circuit system, the operating mechanism not only relies on mechanical structures such as springs and weights to control the valve, but also combines a hydraulic system to provide more precise and reliable control.

[0029] The hydraulic oil circuit system further includes an electromagnetic relief valve 4, an electromagnetic ball valve 5, a two-way cartridge valve assembly 6, a high-pressure rubber hose 9, an electromagnetic directional control valve 10, a hydraulic control check valve 11, a one-way throttle valve 12, a pressure gauge switch 13, a pressure controller 14, a pressure transmitter 15, a pressure gauge 16, a bypass valve cylinder 20, a locking cylinder 21, a main cylinder 22, an oil drain valve 23, a liquid level transmitter 24, an air filter 25, a manual pump 26, an oil return tank 27, a screen filter 28, an oil return filter 29, a liquid level and temperature gauge 30, and a stop valve 31. By introducing these additional components, the hydraulic oil circuit system can achieve more refined control. The electromagnetic relief valve and the electromagnetic ball valve are used to achieve remote control and automated operation. The pressure controller and the pressure transmitter are used to achieve precise monitoring and adjustment of the pressure. The liquid level transmitter is used to monitor the oil tank liquid level, etc. The addition of these components makes the hydraulic oil circuit system more complete and capable of meeting the valve control requirements under complex working conditions.

[0030] The spring adjustment mechanism 3 includes an adjustment screw 301 and a lock nut 302. The adjustment screw 301 is used to adjust the pre-tightening force of the compression spring 106, and the lock nut 302 is used to fix the position of the adjustment screw 301, enabling the operator to conveniently adjust the pre-tightening force of the compression spring according to the actual working conditions, thereby optimizing the closing performance of the valve. Through the design of the adjustment screw and the lock nut, the operator can quickly adjust the pre-tightening force of the spring and ensure the stability of the adjusted state through the lock nut, improving the convenience and reliability of the operation.

[0031] The weight and volume of the lightweight weight 201 are smaller than those of the weight in the traditional weight-type hydraulic valve. By adopting the lightweight weight, the overall weight and volume of the equipment can be significantly reduced, the material cost and transportation cost can be lowered, and at the same time, the installation flexibility and applicability of the equipment can be improved. It is clearly pointed out that the lightweight weight has a smaller weight and volume compared with the weight in the traditional weight-type hydraulic valve.

[0032] When the valve is opened, hydraulic oil enters the rodless cavity 105 to push the piston rod 103 to extend, and the compression spring 106 is compressed and stores energy. The hydraulic oil enters the rodless cavity to push the piston rod to extend, and at the same time, the compression spring is compressed and stores energy. This process provides the necessary energy reserve for the closing of the valve. The energy storage of the compression spring during the opening process, by converting hydraulic energy into the elastic potential energy of the spring, provides power support for the subsequent closing action. During the opening process, the piston rod is pushed to extend by the pressure of the hydraulic oil, and at the same time, the compression spring stores energy, ensuring the smoothness and reliability of the opening process.

[0033] When the valve is closed, the rodless cavity 105 releases pressure, and the combined action of the resilience of the compression spring 106 and the gravity of the lightweight weight 201 drives the piston 102 to retract. After the rodless cavity releases pressure, the combined action of the resilience of the compression spring and the gravity of the lightweight weight drives the piston to retract. This process realizes the rapid closing of the valve. Through this synergistic effect, the closing speed and reliability of the valve are improved, and at the same time, the dependence on the weight of the weight is reduced.

[0034] During the valve opening process, the oil cylinder module 1 monitors the pressure in the rodless cavity 105 and adjusts the pre-tightening force or hydraulic flow rate of the spring adjustment mechanism 3 in real time. This dynamic adjustment mechanism can effectively avoid the impact caused by too fast opening speed, improve the operation stability and service life of the equipment. By adjusting the spring pre-tightening force or hydraulic flow rate in real time, the mechanical impact during valve opening is reduced, and the service life of the equipment is extended.

[0035] Working principle: During operation, when the valve needs to be opened, hydraulic oil enters the rodless cavity 105 of the oil cylinder through the hydraulic oil circuit system. The oil pump 401 and the motor 402 in the hydraulic oil circuit system provide power for the transportation of the hydraulic oil to ensure that the hydraulic oil can smoothly enter the rodless cavity. After the hydraulic oil enters the rodless cavity, it generates pressure to push the piston 102 and the piston rod 103 to extend outwards. The extension of the piston rod drives the lightweight heavy hammer 201 connected to it to move together through the crank 202, thereby gradually opening the valve. During the extension of the piston rod, the compression spring 106 in the rod chamber 104 is further compressed. At this time, the compression spring stores elastic potential energy, preparing for the subsequent valve closing action. When the valve needs to be closed, the hydraulic oil circuit system controls the hydraulic oil in the rodless cavity 105 to release pressure. The pressure in the rodless cavity decreases, causing the piston 102 to lose the driving force to extend outwards. At this time, the compression spring 106 in the rod chamber 104 begins to rebound, releasing the elastic potential energy stored before and generating a resilience force. At the same time, the gravity of the lightweight heavy hammer 201 also generates an inward pulling force on the piston 102. The combined action of the resilience force of the compression spring and the gravity of the lightweight heavy hammer drives the piston 102 and the piston rod 103 to quickly retract. The quick retraction of the piston rod drives the lightweight heavy hammer to move through the crank 202, quickly closing the valve. This way of the spring and the heavy hammer working together significantly shortens the response time of the valve closing, increases the closing speed, and enhances the dynamic performance of the system. During the valve opening process, by monitoring the pressure in the rodless cavity 105, the pre-tightening force of the spring adjustment mechanism 3 or the hydraulic flow rate is adjusted in real time. Components such as the pressure sensor, the pressure controller 14, and the pressure transmitter 15 in the hydraulic oil circuit system are used to monitor the pressure change in the rodless cavity. If it is detected that the pressure in the rodless cavity is too high, it may cause the valve opening speed to be too fast, resulting in mechanical shock. At this time, by adjusting the pre-tightening force of the spring adjustment mechanism 3 or adjusting the opening degrees of components such as the speed control valve 408 and the one-way throttle valve 12 in the hydraulic oil circuit system, the flow rate of the hydraulic oil is controlled to reduce the extension speed of the piston rod and avoid the shock during valve opening. Through this dynamic balance and adjustment mechanism, the operating mechanism can flexibly adjust the opening and closing speeds of the valve according to different working conditions, ensuring the smoothness and reliability of the valve operation process, improving the adaptability and service life of the equipment, and effectively solving problems existing in traditional heavy hammer type hydraulic valves, such as the excessive volume and mass of the heavy hammer, the problems of shock and sealing, and the insufficient dynamic response, and having significant advantages such as weight reduction and cost reduction, space optimization, and improved impact resistance.

[0036] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weight type valve operating mechanism with a spring compensation function, characterized in that: It includes an oil cylinder module (1), a weight module (2) and a spring adjusting mechanism (3). The oil cylinder module (1) includes a cylinder block (101), a piston (102), a piston rod (103), a rod chamber (104) and a rodless chamber (105). A compression spring (106) is arranged in the rod chamber (104). One end of the compression spring (106) is fixed on an adjusting pressing plate (107), and the other end is connected to the piston (102). The weight module (2) includes a lightweight weight (201). The lightweight weight (201) is connected to the piston rod (103) through a crank (202). The resilience of the compression spring (106) assists the lightweight weight (201) to complete the valve closing action.

2. The heavy hammer type valve operating mechanism with a spring compensation function according to claim 1, characterized in that: The oil cylinder module (1) further includes a hydraulic oil circuit system. The rodless chamber (105) is connected to a hydraulic control system. The hydraulic oil circuit system includes an oil pump (401), a motor (402), a relief valve (403), a check valve (404), a globe valve (405), an accumulator (406), a directional control valve (407) and a flow control valve (408). The hydraulic oil circuit system is used to control the opening and closing actions of the oil cylinder module.

3. The weight type valve operating mechanism with a spring compensation function according to claim 2, characterized in that: The hydraulic oil circuit system further includes an electromagnetic relief valve (4), an electromagnetic ball valve (5), a two-way cartridge valve assembly (6), a high-pressure rubber hose (9), an electromagnetic directional control valve (10), a pilot-operated check valve (11), a one-way throttle valve (12), a pressure gauge switch (13), a pressure controller (14), a pressure transmitter (15), a pressure gauge (16), a bypass valve oil cylinder (20), a locking oil cylinder (21), a main oil cylinder (22), an oil drain valve (23), a liquid level transmitter (24), an air filter (25), a manual pump (26), an oil return tank (27), a screen filter (28), an oil return filter (29), a liquid level and liquid temperature gauge (30) and a globe valve (31).

4. A weight type valve operating mechanism with a spring compensation function according to claim 3, characterized in that: The spring adjusting mechanism (3) includes an adjusting screw (301) and a lock nut (302). The adjusting screw (301) is used to adjust the pre-tightening force of the compression spring (106), and the lock nut (302) is used to fix the position of the adjusting screw (301).

5. The heavy hammer type valve operating mechanism with a spring compensation function according to claim 4, characterized in that: The weight and volume of the lightweight weight (201) are smaller than those of the weight in a traditional weight-type hydraulic valve.

6. The heavy hammer type valve operating mechanism with a spring compensation function according to claim 5, characterized in that: When the valve is opened, hydraulic oil enters the rodless chamber (105) to push the piston rod (103) to extend, and the compression spring (106) is compressed and stores energy.

7. A weight type valve operating mechanism with a spring compensation function according to claim 6, characterized in that: When the valve is closed, the rodless chamber (105) releases pressure. The resilience of the compression spring (106) and the gravity of the lightweight weight (201) act together to drive the piston (102) to retract.

8. A weight type valve operating mechanism with a spring compensation function according to claim 7, characterized in that: During the valve opening process, the oil cylinder module (1) adjusts the pre-tightening force or hydraulic flow rate of the spring adjusting mechanism (3) in real time by monitoring the pressure in the rodless chamber (105).

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