Electric valve with buffering and pressure relief functions

Abstract

The utility model relates to the technical field of valves, and discloses an electric valve with buffering and pressure relief, which comprises a connecting pipe, a buffering cylinder is fixedly connected to the outer wall of the connecting pipe, a top plate is fixedly connected to the outside of the buffering cylinder, a bolt is in threaded connection with the inside of the top plate, and a buffering sleeve is rotatably connected to the bottom end of the bolt. And the outer wall of the buffer sleeve is slidably connected to the inner wall of the buffer cylinder, a fixing block is fixedly connected to the interior of the buffer sleeve, a spring damper is rotatably connected to the outer wall of the fixing block, a connecting block is fixedly connected to the bottom end of the spring damper, and a buffer plate is fixedly connected to the outer wall of the connecting block. The push plate in the connecting pipe slides towards the interior of the buffer sleeve, the push spring is extruded to be shrunk, the push spring absorbs pressure, the spring damper in the buffer plate is pushed to be shrunk, and the pressure is released through the holes in the two sides of the buffer sleeve, so that the pressure of the valve is relieved, and the valve is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an electric valve with buffer pressure relief. Background Art

[0002] In modern industrial production, the control method of valves is also constantly undergoing technological innovation. Electric valves are one of the important types. They use electric motors as driving devices to achieve remote control and automatic control of valves. Compared with traditional manual valves, electric valves have obvious advantages in terms of ease of operation, work efficiency and safety. However, in practical applications, traditional electric valves also have certain shortcomings. Especially in the process of valve closing, due to the sudden cutoff of the fluid, a large pressure shock will be generated, causing certain damage to the valve and pipeline system. At the same time, this pressure shock will also generate noise and affect the working environment. In order to solve this problem, researchers proposed the design of an electric valve with buffer pressure relief.

[0003] A Chinese patent document with the search announcement number CN216242626U discloses a low-temperature resistant valve, including a valve body, both sides of the valve body are fixedly provided with a block, the outer wall of the block is movably provided with a pipeline, the interior of the valve body is provided with a movable groove, the bottom of the inner wall of the valve body is fixedly provided with a buffer spring, and the top of the buffer spring is fixedly provided with a support plate. By providing the block, the inner wall of the valve body and the pipeline can be mutually connected, ensuring the normal use of the low-temperature resistant valve, and the valve body and the pipeline located at the same horizontal plane can ensure that there will be no leakage when the water flows, and it is simple and convenient to replace the valve parts, reducing the cost of replacing the valve, and the threaded connection of the fixing bolt and the threaded hole can compress the connection between the sleeve and the valve body, reducing the gap between the two structures, so that the flowing water will not leak, and the threaded connection method is convenient for people to install and disassemble the valve parts, but the device only solves the problem that the internal structure is prone to condensation and blockage when working for a long time in a low temperature environment, and cannot relieve the huge pressure generated when the valve is closed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an electric valve with buffer pressure relief, aiming to improve the inability to relieve the huge pressure generated when the valve is closed.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an electric valve with buffer pressure relief, comprising a connecting pipe, the outer wall of the connecting pipe is fixedly connected with a buffer cylinder, the outside of the buffer cylinder is fixedly connected with a top plate, the internal thread of the top plate is connected with a bolt, the bottom end of the bolt is rotatably connected with a buffer sleeve, the outer wall of the buffer sleeve is slidably connected to the inner wall of the buffer cylinder, the inside of the buffer sleeve is fixedly connected with a fixed block, the outer wall of the fixed block is rotatably connected with a spring damper, the bottom end of the spring damper is fixedly connected with a connecting block, the outer wall of the connecting block is fixedly connected with a buffer plate, the outer wall of the buffer plate is slidably connected to the inner wall of the buffer sleeve, a push spring is arranged inside the buffer sleeve, the top end of the push spring is fixedly connected to the outer wall of the buffer plate, the bottom end of the push spring is fixedly connected with a push plate, the outer wall of the push plate is arranged on the inner wall of the connecting pipe, and the outer wall of the connecting pipe is provided with an adjusting component.

[0006] Furthermore, the regulating assembly comprises a valve body, and an outer wall of the valve body is fixedly connected to an outer wall of the connecting pipe.

[0007] Furthermore, a sealing ring is fixedly connected to the inner wall of the valve body, and a ball valve is arranged on the outer wall of the sealing ring.

[0008] Furthermore, the outer wall of the ball valve is arranged on the inner wall of the valve body, and the outer wall of the valve body is fixedly connected with a fixing cylinder.

[0009] Furthermore, a protective plate is fixedly connected to the outer wall of the fixed cylinder, a connecting shaft is rotatably connected to the inside of the protective plate, and a turbine is fixedly connected to the outer wall of the connecting shaft.

[0010] Furthermore, a protective shell is fixedly connected to the outer wall of the fixed cylinder, a servo motor is fixedly connected to the outer wall of the protective shell, and a worm is fixedly connected to the output end of the servo motor.

[0011] Furthermore, a hand wheel is fixedly connected to the outer wall of the worm, and the worm is meshed with the turbine.

[0012] Furthermore, the inner wall of the fixed cylinder is fixedly connected to the limit plate, and the outer wall of the connecting shaft is fixedly connected to the outer wall of the ball valve.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, when the valve is closed, the pressure in the pipeline increases, the push plate in the connecting pipe slides toward the inside of the buffer sleeve, squeezing the push spring to shrink it, the push spring absorbs the pressure, and pushes the spring damper inside the buffer plate to shrink, which enables the push plate to slide inside the buffer sleeve and release the pressure through the openings on both sides of the buffer sleeve, thereby relieving the valve pressure and preventing the valve from being damaged.

[0015] 2. In the utility model, the flange ring on one side of the connecting pipe is connected to the pipeline, and the servo motor drives the worm inside the fixed cylinder to rotate, thereby driving the turbine outside the connecting shaft to rotate, and further driving the ball valve inside the valve body to rotate, thereby realizing electric control of the valve. If the servo motor is damaged, it is only necessary to manually turn the handwheel on the other side of the worm, thereby realizing a method of multiple valve control and preventing the servo motor from being damaged and causing valve failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an electric valve with buffer pressure relief proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the connecting pipe part of an electric valve with buffer pressure relief proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a buffer sleeve of an electric valve with buffer pressure relief proposed by the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the internal structure of a fixed cylinder of an electric valve with buffer pressure relief.

[0020] Legend:

[0021] 1. Connecting pipe; 2. Buffer cylinder; 3. Top plate; 4. Bolt; 5. Buffer sleeve; 6. Push spring; 7. Push plate; 8. Fixed block; 9. Connecting block; 10. Spring damper; 11. Valve body; 12. Fixed cylinder; 13. Protective plate; 14. Servo motor; 15. Protective shell; 16. Connecting shaft; 17. Turbine; 18. Worm; 19. Handwheel; 20. Ball valve; 21. Sealing ring; 22. Limit plate; 23. Buffer plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-3, the utility model provides an embodiment: an electric valve with buffer pressure relief, including a connecting pipe 1, the outer wall of the connecting pipe 1 is fixedly connected with a buffer cylinder 2, the outside of the buffer cylinder 2 is fixedly connected with a top plate 3, the internal thread of the top plate 3 is connected with a bolt 4, the bottom end of the bolt 4 is rotatably connected with a buffer sleeve 5, the outer wall of the buffer sleeve 5 is slidably connected to the inner wall of the buffer cylinder 2, the inside of the buffer sleeve 5 is fixedly connected with a fixed block 8, the outer wall of the fixed block 8 is rotatably connected with a spring damper 10, the bottom end of the spring damper 10 is fixedly connected with a connecting block 9, the outer wall of the connecting block 9 is fixedly connected with a buffer plate 23, the outer wall of the buffer plate 23 is slidably connected to the inner wall of the buffer sleeve 5, a push spring 6 is arranged inside the buffer sleeve 5, the top end of the push spring 6 is fixedly connected to the outer wall of the buffer plate 23, the bottom end of the push spring 6 is fixedly connected with a push plate 7, the outer wall of the push plate 7 is arranged on the inner wall of the connecting pipe 1, and the outer wall of the connecting pipe 1 is provided with an adjusting component;

[0024] Specifically, during the process of closing the valve, the pressure inside the pipeline will gradually increase. This pressure increase will trigger the push plate 7 in the connecting pipe 1 to move, causing it to slide toward the inside of the buffer sleeve 5. During this process, the push plate 7 will squeeze the push spring 6 in the buffer sleeve 5, causing the push spring 6 to shrink. The shrinkage of the push spring 6 is not a meaningless action. It is actually absorbing the pressure inside the pipeline. While the push spring 6 absorbs the pressure, it will transfer the pressure to the spring damper 10 inside the buffer plate 23. After receiving the pressure transmitted by the push spring 6, the spring damper 10 will also shrink. The design purpose of this process is to allow the push plate 7 to slide smoothly inside the buffer sleeve 5. In this way, when the valve is closed, the pressure inside the connecting pipe 1 and the buffer sleeve 5 can be released through the openings on both sides of the buffer sleeve 5. This design effectively relieves the pressure when the valve is closed and avoids damage to the valve due to excessive pressure. In general, this system achieves effective management of the internal pressure when the valve is closed through the design of an ingenious mechanical structure. This management method not only ensures the normal operation of the valve, but also avoids damage to the valve due to excessive pressure.

[0025] Reference Figure 4The regulating assembly includes a valve body 11, the outer wall of the valve body 11 is fixedly connected to the outer wall of the connecting pipe 1; the inner wall of the valve body 11 is fixedly connected to a sealing ring 21, and the outer wall of the sealing ring 21 is provided with a ball valve 20; the outer wall of the ball valve 20 is arranged on the inner wall of the valve body 11, and the outer wall of the valve body 11 is fixedly connected to a fixed cylinder 12; the outer wall of the fixed cylinder 12 is fixedly connected to a protective plate 13, the inner rotation of the protective plate 13 is connected to a connecting shaft 16, and the outer wall of the connecting shaft 16 is fixedly connected to a turbine 17; the outer wall of the fixed cylinder 12 is fixedly connected to a protective shell 15, the outer wall of the protective shell 15 is fixedly connected to a servo motor 14, and the output end of the servo motor 14 is fixedly connected to a worm 18; the outer wall of the worm 18 is fixedly connected to a hand wheel 19, and the worm 18 and the turbine 17 are meshed; the inner wall of the fixed cylinder 12 is fixedly connected to a limit plate 22, and the outer wall of the connecting shaft 16 is fixedly connected to the outer wall of the ball valve 20;

[0026] Specifically, the servo motor 14 plays a driving role and rotates through the worm 18 inside the fixed cylinder 12. This design enables the valve to operate smoothly and stably during the opening and closing process. In addition, the turbine 17 on the outside of the connecting shaft 16 also plays a key role. It works in conjunction with the connecting shaft 16 to transmit the rotational force of the servo motor 14 to the ball valve 20 inside the valve body 11. In this way, through the drive of the connecting shaft 16, the ball valve 20 can achieve precise rotation to achieve the effect of electrically controlling the valve. It is worth mentioning that when the servo motor 14 is damaged, the control system of the valve will not completely fail. At this time, you only need to turn the handwheel 19 on the other side of the worm 18 to drive the worm 18 to rotate. This design enables the valve to have multiple control methods, which not only improves the reliability of the valve, but also reduces failure losses.

[0027] Working principle: When an electric valve with buffer pressure relief is needed, the flange ring on one side of the connecting pipe 1 is connected to the pipeline, and the servo motor 14 drives the worm 18 inside the fixed cylinder 12 to rotate, thereby driving the turbine 17 outside the connecting shaft 16 to operate, thereby driving the ball valve 20 inside the valve body 11 to rotate through the connecting shaft 16, so as to achieve the effect of electric control of the valve. When the servo motor 14 is damaged, only the handwheel 19 on the other side of the worm 18 needs to be turned to drive the worm 18 to rotate, thereby achieving a variety of valve control methods to prevent the servo motor 14 from being damaged. The motor 14 is damaged, causing the valve to be unusable. When the valve is closed, the pressure inside the pipeline increases, pushing the push plate 7 in the connecting pipe 1 to slide toward the inside of the buffer sleeve 5, squeezing the push spring 6, causing the push spring 6 to contract, and absorbing the pressure through the push spring 6. The push spring 6 then pushes the spring damper 10 inside the buffer plate 23 to contract, allowing the push plate 7 to slide inside the buffer sleeve 5. At the same time, the pressure inside the connecting pipe 1 and the buffer sleeve 5 is released through the openings on both sides of the buffer sleeve 5, thereby achieving the effect of relieving the valve pressure and preventing the valve from being damaged due to excessive pressure.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric valve with buffer pressure relief, comprising a connecting pipe (1), characterized in that: The outer wall of the connecting pipe (1) is fixedly connected to a buffer cylinder (2), the outside of the buffer cylinder (2) is fixedly connected to a top plate (3), the inside of the top plate (3) is threadedly connected to a bolt (4), the bottom end of the bolt (4) is rotatably connected to a buffer sleeve (5), the outer wall of the buffer sleeve (5) is slidably connected to the inner wall of the buffer cylinder (2), the inside of the buffer sleeve (5) is fixedly connected to a fixing block (8), the outer wall of the fixing block (8) is rotatably connected to a spring damper (10), and the bottom end of the spring damper (10) is rotatably connected to the inner wall of the buffer cylinder (2). The end of the connecting pipe (1) is fixedly connected to a connecting block (9), the outer wall of the connecting block (9) is fixedly connected to a buffer plate (23), the outer wall of the buffer plate (23) is slidably connected to the inner wall of the buffer sleeve (5), a push spring (6) is arranged inside the buffer sleeve (5), the top end of the push spring (6) is fixedly connected to the outer wall of the buffer plate (23), the bottom end of the push spring (6) is fixedly connected to a push plate (7), the outer wall of the push plate (7) is arranged on the inner wall of the connecting pipe (1), and the outer wall of the connecting pipe (1) is provided with an adjustment component.

2. The electric valve with buffer pressure relief according to claim 1, characterized in that: The regulating assembly comprises a valve body (11), the outer wall of the valve body (11) being fixedly connected to the outer wall of the connecting pipe (1).

3. The electric valve with buffer pressure relief according to claim 2, characterized in that: A sealing ring (21) is fixedly connected to the inner wall of the valve body (11), and a ball valve (20) is provided on the outer wall of the sealing ring (21).

4. The electric valve with buffer pressure relief according to claim 3, characterized in that: The outer wall of the ball valve (20) is arranged on the inner wall of the valve body (11), and the outer wall of the valve body (11) is fixedly connected to a fixing cylinder (12).

5. The electric valve with buffer pressure relief according to claim 4, characterized in that: The outer wall of the fixed cylinder (12) is fixedly connected to a protective plate (13), the interior of the protective plate (13) is rotatably connected to a connecting shaft (16), and the outer wall of the connecting shaft (16) is fixedly connected to a turbine (17).

6. The electric valve with buffer pressure relief according to claim 5, characterized in that: The outer wall of the fixed cylinder (12) is fixedly connected to a protective shell (15), the outer wall of the protective shell (15) is fixedly connected to a servo motor (14), and the output end of the servo motor (14) is fixedly connected to a worm (18).

7. The electric valve with buffer pressure relief according to claim 6, characterized in that: A hand wheel (19) is fixedly connected to the outer wall of the worm (18), and the worm (18) and the turbine (17) are meshed.

8. The electric valve with buffer pressure relief according to claim 7, characterized in that: The inner wall of the fixed cylinder (12) is fixedly connected to a limit plate (22), and the outer wall of the connecting shaft (16) is fixedly connected to the outer wall of the ball valve (20).

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