A valve actuator that uses pipeline medium as a power source

Abstract

This invention belongs to the field of valve actuator technology, and more particularly to a valve actuator that uses pipeline medium as a power source, including a valve. This invention energizes a two-position three-way solenoid valve, which switches to a specific working state. The medium enters the actuator body through the connecting pipe, filter box, and port A. Under the pressure of the medium, the piston plate moves the valve stem and compresses the spring. The movement of the valve stem moves the valve core, achieving closure. When opening, the two-position three-way solenoid valve is de-energized, switching to another working state. The spring rebounds, pushing the piston plate to move. The piston plate, through the valve stem, resets the valve core, achieving opening. As the piston plate moves, the medium in the top cavity of the actuator body is compressed. However, because port A is closed, the medium can only be discharged through ports P and B. This actuator body uses a two-position three-way solenoid valve to control the flow of the medium, achieving rapid and reliable opening and closing of the valve.

Description

Technical Field

[0001] This utility model relates to the field of valve actuator technology, specifically a valve actuator that uses pipeline medium as a power source. Background Technology

[0002] In the field of industrial automation control, valves are an indispensable key component in fluid control systems, and the accuracy and timeliness of their opening and closing operations are crucial to the stable operation of the entire system. As the core device driving valve action, the performance of the valve actuator directly affects the valve's working efficiency and reliability.

[0003] Currently, common valve actuators on the market are mainly divided into electric and pneumatic types. Electric actuators rely on an electric motor to provide power, driving the valve stem through a reduction gear and other transmission devices to open and close the valve. However, electric actuators have some obvious limitations. On the one hand, their structure is relatively complex, including multiple components such as an electric motor, a reducer, and a control circuit. This not only increases the cost and size of the equipment but also makes installation and maintenance cumbersome. On the other hand, electric actuators consume a large amount of electrical energy during operation, which undoubtedly increases operating costs in today's increasingly energy-constrained environment. Furthermore, in some flammable and explosive environments, the electric sparks generated by the electric motor may cause safety accidents, posing a significant safety hazard. Pneumatic actuators, on the other hand, use compressed air as a power source, driving the valve through components such as cylinders. Pneumatic actuators have advantages such as fast response speed and relatively simple structure, but they have higher requirements for the supply of compressed air. Specialized air compressors and air tanks are required, which not only increases the complexity and cost of the system, but also causes pressure loss during compressed air transportation, which may lead to insufficient power of the actuator and affect the opening and closing effect of the valve. Most of these actuators lack effective control means and it is difficult to achieve fast and reliable opening and closing of the valve. Therefore, we propose a valve actuator that uses pipeline medium as a power source to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a valve actuator that uses pipeline medium as a power source, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A valve actuator using pipeline medium as a power source includes a valve, an actuator body at the top of the valve, a valve stem on the valve, the top end of the valve stem extending into the actuator body and fixedly connected to a piston plate, the piston plate being slidably connected to the inner wall of the actuator body, a spring being fixedly connected between the bottom of the piston plate and the bottom inner wall of the actuator body, a two-position three-way solenoid valve at the top of the actuator body, a P port at the bottom of the two-position three-way solenoid valve, the P port being connected to and fixed to the top of the actuator body, an A port and a B port at the top of the two-position three-way solenoid valve, a filter box being connected to and fixed at the top of the A port, a connecting pipe being connected to and fixed at the top of the filter box, a U-shaped groove with one side open on the filter box, a filter plate being movably contacted on the U-shaped groove, a sealing plate being fixedly connected to the front side of the filter plate, and the sealing plate being movably contacted with the filter box.

[0009] Furthermore, the spring is sleeved on the valve stem.

[0010] Furthermore, mounting blocks are welded to both sides of the sealing plate, and a slot is provided on the top of the mounting block.

[0011] Furthermore, two T-shaped rods are welded to the top of the filter box, and the same pull rod is slidably connected to the two T-shaped rods.

[0012] Furthermore, a tension spring is fixedly connected between the top of the pull rod and the inner wall of the top of the T-shaped rod, and the tension spring is movably sleeved on the corresponding T-shaped rod.

[0013] Furthermore, two locking pins are welded to the bottom of the pull rod, and the locking pins engage with corresponding locking slots.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a valve actuator that uses pipeline medium as a power source, which has the following beneficial effects:

[0016] This invention utilizes a two-position three-way solenoid valve. When the valve needs to be closed, the valve is energized, switching to a specific operating state. The medium in the upstream pipeline, under its own pressure, passes sequentially through the connecting pipe, filter box, and port A, entering the top cavity of the actuator body. The pressure within the top cavity gradually increases. Under the pressure of the medium, the piston plate moves the valve stem downwards, compressing the spring. The downward movement of the valve stem moves the valve core, thus closing the valve. When the valve needs to be opened, the two-position three-way solenoid valve is de-energized, switching to another operating state. The spring rebounds, pushing the piston plate upwards. The piston plate moves the valve stem upwards, which in turn resets the valve core, opening the valve. As the piston plate moves, the medium in the top cavity of the actuator body is compressed, increasing the pressure. However, since port A is closed, the medium can only be discharged through ports P and B. Therefore, this actuator body uses a two-position three-way solenoid valve to control the flow of medium, achieving rapid and reliable valve opening and closing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the valve of this utility model after it has been concealed.

[0019] Figure 3 This is a three-dimensional structural diagram of the actuator body of this utility model cut open;

[0020] Figure 4 This is a partial three-dimensional structural diagram of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the connection between the sealing plate, filter plate, and mounting block of this utility model.

[0022] In the diagram: 1. Valve; 2. Actuator body; 3. Valve stem; 4. Piston plate; 5. Spring; 6. Two-position three-way solenoid valve; 7. P port; 8. A port; 9. B port; 10. Filter box; 11. Connecting pipe; 12. U-shaped groove; 13. Filter plate; 14. Sealing plate; 15. Mounting block; 16. Slot; 17. T-shaped rod; 18. Pull rod; 19. Tension spring; 20. Locking pin. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] like Figure 1-5 As shown in the figure, an embodiment of this utility model discloses a valve actuator that uses pipeline medium as a power source, including a valve 1, an actuator body 2 at the top of the valve 1, a valve stem 3 on the valve 1, the top end of the valve stem 3 extending into the actuator body 2 and fixedly connected to a piston plate 4, the piston plate 4 being slidably connected to the inner wall of the actuator body 2, and a spring 5 fixedly connected between the bottom of the piston plate 4 and the bottom inner wall of the actuator body 2. A two-position three-way solenoid valve 6 is provided at the top of the actuator body 2, and a P-port 7 is provided below the two-position three-way solenoid valve 6. 7 is connected and fixed to the top of the actuator body 2. The top of the two-position three-way solenoid valve 6 is provided with interface A 8 and interface B 9. The top of interface A 8 is connected to and fixed with a filter box 10. The top of the filter box 10 is connected to and fixed with a connecting pipe 11. The filter box 10 has a U-shaped groove 12 with one side open. The U-shaped groove 12 is in contact with a filter plate 13. The front side of the filter plate 13 is fixedly connected with a sealing plate 14. The sealing plate 14 is in contact with the filter box 10. When it is necessary to close valve 1, the two-position three-way solenoid valve 6 is energized. At this time, the two-position three-way valve... When solenoid valve 6 switches to a specific operating state, the medium in the upstream pipeline, under its own pressure, passes through connecting pipe 11, filter box 10, and A interface 8 in sequence, entering the top cavity of actuator body 2. The pressure in the top cavity of actuator body 2 gradually increases. Under the action of the medium pressure, piston plate 4 drives valve stem 3 to move downward and compresses spring 5. The downward movement of valve stem 3 drives valve core of valve 1 to move, thereby realizing the closing action of valve 1. When it is necessary to open valve 1, the two-position three-way solenoid valve 6 is de-energized. At this time, the two-position three-way solenoid valve 6... Switching to another working state, spring 5 begins to rebound. The rebound force of spring 5 pushes piston plate 4 upward, piston plate 4 drives valve stem 3 upward, and the upward movement of valve stem 3 drives valve core 1 to reset, thereby realizing the opening action of valve 1. As piston plate 4 moves, the medium in the top cavity of actuator body 2 is compressed and the pressure increases. However, since port A 8 is closed, the medium can only be discharged through port P 7 and port B 9. Therefore, actuator body 2 uses two-position three-way solenoid valve 6 to control the flow of medium in order to realize the rapid and reliable opening and closing of valve 1.

[0026] In some embodiments, the spring 5 is sleeved on the valve stem 3, and the spring 5 serves to reset the valve.

[0027] In some embodiments, mounting blocks 15 are welded to both sides of the sealing plate 14, and a slot 16 is provided on the top of the mounting block 15.

[0028] In some embodiments, two T-shaped rods 17 are welded to the top of the filter box 10, and the same pull rod 18 is slidably connected to the two T-shaped rods 17. The T-shaped rods 17 serve as a limiting element.

[0029] In some embodiments, a tension spring 19 is fixedly connected between the top of the pull rod 18 and the top inner wall of the T-shaped rod 17, and the tension spring 19 is movably sleeved on the corresponding T-shaped rod 17.

[0030] In some embodiments, two locking pins 20 are welded to the bottom of the pull rod 18. The locking pins 20 are engaged with the corresponding slots 16, and the locking pins 20 serve to fix the rod in place.

[0031] Working principle or structural principle: When valve 1 needs to be closed, the two-position three-way solenoid valve 6 is energized. At this time, the two-position three-way solenoid valve 6 switches to a specific working state, so that port P 7 is connected to port A 8, while port B 9 is closed. Since port P 7 is connected to the top of actuator body 2, and port A 8 is connected to the pipeline before the valve through filter box 10 and connecting pipe 11, the medium in the pipeline before the valve, under its own pressure, passes through connecting pipe 11, filter box 10 and port A 8 in sequence, and enters the top cavity of actuator body 2. As the medium continues to enter, the pressure in the top cavity of actuator body 2 gradually increases. Under the action of the medium pressure, piston plate 4 is pushed downward. The force slides downwards along the inner wall of the actuator body 2 and compresses the spring 5. Because the top of the valve stem 3 is fixedly connected to the piston plate 4, the valve stem 3 moves downwards with the piston plate 4. The downward movement of the valve stem 3 drives the valve core of valve 1 to move, thereby realizing the closing action of valve 1. In this process, the filter box 10 plays a key role. Before the medium enters the actuator body 2, it will pass through the filter plate 13 for filtration. The filter plate 13 can intercept impurities in the medium, prevent impurities from entering the actuator body 2, and avoid impurities affecting the sliding of the piston plate 4 and the normal operation of the spring 5, thereby ensuring the stable operation of the actuator. When it is necessary to open valve 1, the two-position three-way solenoid valve 6 is de-energized. At this time, the two-position three-way solenoid valve 6 switches to another working state, connecting port P 7 and port B 9, while port A 8 remains closed. Since the medium in the top cavity of the actuator body 2 cannot be discharged through port A 8, the spring 5 begins to rebound under its own elastic force. The rebound force of the spring 5 pushes the piston plate 4 upward, which in turn moves the valve stem 3 upward. The upward movement of the valve stem 3 causes the valve core of valve 1 to reset, thus realizing the opening action of valve 1. As the piston plate 4 moves, the medium in the top cavity of the actuator body 2 is compressed, and the pressure increases. However, since port A 8 is closed, the medium can only be discharged through port P 7 and port B 9. Therefore, the actuator body 2 adopts... Two-position three-way solenoid valve 6 controls the flow of medium to achieve rapid and reliable opening and closing of valve 1. When filter plate 13 accumulates a lot of impurities after a period of use and needs to be replaced, the operator can pull the lever 18 upward. The lever 18 slides upward along the two T-shaped rods 17, while stretching the tension spring 19, causing the tension spring 19 to undergo elastic deformation. The lever 18 moves upward, driving the two locking pins 20 welded to its bottom to move upward. The locking pins 20 disengage from the locking groove 16 at the top of the mounting block 15, releasing the locking and fixing of the sealing plate 14. At this time, the operator can pull the sealing plate 14 forward, and the sealing plate 14 drives the filter plate 13 to be pulled out from the U-shaped groove 12, so that the filter plate 13 can be taken out from the filter box 10.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A valve actuator using a pipeline medium as a power source, comprising a valve (1), characterized in that: The valve (1) has an actuator body (2) on its top. The valve (1) has a valve stem (3). The top of the valve stem (3) extends into the actuator body (2) and is fixedly connected to a piston plate (4). The piston plate (4) is slidably connected to the inner wall of the actuator body (2). A spring (5) is fixedly connected between the bottom of the piston plate (4) and the bottom inner wall of the actuator body (2). The actuator body (2) has a two-position three-way solenoid valve (6) on its top. The two-position three-way solenoid valve (6) has a P port (7) below it. The P port (7) is connected to the actuator body (2). The top of the main body (2) is connected and fixed. The top of the two-position three-way solenoid valve (6) is provided with an A interface (8) and a B interface (9). The top of the A interface (8) is connected and fixed with a filter box (10). The top of the filter box (10) is connected and fixed with a connecting pipe (11). The filter box (10) has a U-shaped groove (12) with one side open. The U-shaped groove (12) is in contact with a filter plate (13). The front side of the filter plate (13) is fixedly connected with a sealing plate (14). The sealing plate (14) is in contact with the filter box (10).

2. A valve actuator using a conduit medium as a power source according to claim 1, wherein: The spring (5) is sleeved on the valve stem (3).

3. A valve actuator using a conduit medium as a power source according to claim 2, wherein: Mounting blocks (15) are welded to both sides of the sealing plate (14), and a slot (16) is provided on the top of the mounting block (15).

4. A valve actuator using a conduit medium as a power source according to claim 3, wherein: Two T-shaped rods (17) are welded to the top of the filter box (10), and the same pull rod (18) is slidably connected to the two T-shaped rods (17).

5. A valve actuator using a conduit medium as a power source according to claim 4, wherein: A tension spring (19) is fixedly connected between the top of the pull rod (18) and the top inner wall of the T-shaped rod (17), and the tension spring (19) is movably sleeved on the corresponding T-shaped rod (17).

6. A valve actuator using a conduit medium as a power source according to claim 5, wherein: The bottom of the pull rod (18) is welded with two locking pins (20), which are engaged with the corresponding locking slots (16).

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