On-site display device for pulse valve diaphragm damage

Abstract

The invention provides an on-site display device for pulse valve diaphragm damage. The on-site display device comprises a valve body, an electromagnetic sealing piece and a damage indicating piece. The valve body is provided with a working chamber and a detection chamber, a sealing membrane is arranged between the working chamber and the detection chamber, and an air guide hole is formed in the sealing membrane; the electromagnetic sealing element is mounted at the end part of the valve body and is used for controlling the discharge of the gas and controlling the gas to be stored in the working chamber and the detection chamber; the damage indicating piece is installed on the air guide hole, the two ends of the damage indicating piece are located in the working cavity and the detection cavity respectively, and the damage indicating piece judges whether the sealing membrane is damaged or not according to the air pressure difference between the two sides of the sealing membrane. The damage indicating piece is installed on the sealing diaphragm, whether the sealing diaphragm is damaged or not is judged according to the air pressure difference of the two sides of the sealing diaphragm, the damage condition of the sealing diaphragm can be directly observed on the premise that the valve body is not disassembled, the maintenance cost and the maintenance time of the valve body are effectively saved, and the valve has the advantages of being simple in structure and convenient and fast to operate.

Description

Technical Field

[0001] This invention relates to the field of display device technology, and more specifically to an on-site display device for a damaged pulse valve diaphragm. Background Technology

[0002] An electromagnetic pulse valve is a diaphragm valve controlled by an electromagnetic or pneumatic pilot valve. It generates pulses through the rapid opening and closing of a high-pressure air source and is primarily used in the cleaning systems of baghouse dust collectors. Its core components include an electromagnetic pilot head, diaphragm, valve body, and spring. The valve body is made of aluminum alloy, and the diaphragm is typically made of nitrile rubber reinforced with fabric, providing wear resistance and high sealing performance. The device opens and closes by driving the diaphragm through air pressure difference: when energized, the electromagnetic pilot head opens the unloading hole to release the pressure in the rear chamber, and the gas in the front chamber lifts the diaphragm to complete the pulse; when de-energized, the spring resets and closes the air hole, restoring the sealing state. Based on structure, it is divided into three types: right-angle type (inlet and outlet at 90°), straight-through type (180°), and submerged type (inlet placed inside the air tank). An ultra-low pressure type is also available for special operating conditions. The working pressure range is 0.1-0.7 MPa, the response time is less than 0.03 seconds, the diaphragm life exceeds 800,000 cycles, and the applicable environment must meet the requirements of temperature 1-50℃, humidity <85%, and no corrosive media.

[0003] After a period of use, pulse valves need to be disassembled and inspected for diaphragm damage to ensure stable operation. However, inspecting for diaphragm damage by disassembling the pulse valve is time-consuming, labor-intensive, and has certain drawbacks.

[0004] In view of the above, this application is hereby submitted. Summary of the Invention

[0005] The purpose of this invention is to provide an on-site display device for pulse valve diaphragm damage, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: An embodiment of the present invention provides a local display device for pulse valve diaphragm damage, comprising a valve body, an electromagnetic seal, and a damage indicator; The valve body has a working chamber and a detection chamber, and a sealing diaphragm is provided between the working chamber and the detection chamber, and the sealing diaphragm is provided with an air guide hole; The electromagnetic seal is installed at the end of the valve body. The electromagnetic seal is used to control the discharge of gas and to control the storage of gas in the working chamber and the detection chamber. The damage indicator is installed on the air vent, and the two ends of the damage indicator are located in the working chamber and the detection chamber, respectively. The damage indicator determines whether the sealing diaphragm is damaged based on the air pressure difference on both sides of the sealing diaphragm.

[0007] Furthermore, the valve body has an air inlet end and an air outlet end, the air inlet end is connected to the air supply manifold, and the air outlet end is connected to and closed by the electromagnetic seal.

[0008] Furthermore, the electromagnetic seal includes an electromagnetic mounting base, an electromagnetic valve rod, an electromagnetic coil, and a control diaphragm; The electromagnetic mounting base is mounted on the valve body; The solenoid valve stem is movably mounted on the solenoid mounting base; The electromagnetic coil is fixedly installed on the electromagnetic mounting base, and the electromagnetic valve rod is magnetically attracted to the electromagnetic coil. The control diaphragm is disposed within the electromagnetic mounting base, and the control diaphragm abuts against the exhaust end by being pushed by the electromagnetic valve rod.

[0009] Furthermore, a control spring is provided between the electromagnetic mounting base and the control diaphragm, with both ends of the control spring abutting against the end of the electromagnetic valve rod and the control diaphragm, respectively.

[0010] Furthermore, multiple air guide holes are provided, and the multiple air guide holes are evenly distributed circumferentially on the sealing diaphragm.

[0011] Furthermore, the diameter of the air guide hole is 0.6mm-1mm, and the air guide hole is connected to the sealing diaphragm at a 45° oblique angle.

[0012] Furthermore, the damage indicator includes a mounting tube, an indicator needle, and a return spring; The mounting tube is fixedly installed on the inner wall of the air guide hole, and the mounting tube is sealed to the inner wall of the air guide hole. The indicator needle is located inside the mounting tube, and the indicator needle is in close and sliding contact with the inner wall of the mounting tube, with the tip of the indicator needle exposed outside the mounting tube. The reset spring is installed inside the mounting tube, and the reset spring is used to push the indicator needle to move outward from the mounting tube.

[0013] Furthermore, a limit ring is fixedly provided at one end of the mounting tube away from the indicator needle, and the two ends of the reset spring abut against the limit ring and the indicator needle respectively.

[0014] Furthermore, an indicator color ring is provided in the area of ​​the indicator needle exposed outside the mounting tube.

[0015] The above-described solution of the present invention has at least the following beneficial effects: This invention installs a damage indicator on the sealing diaphragm and determines whether the sealing diaphragm is damaged based on the air pressure difference on both sides of the sealing diaphragm. It can directly observe the damage of the sealing diaphragm without disassembling the valve body, effectively saving the maintenance cost and time of the valve body. It has the characteristics of simple structure and convenient operation. Attached Figure Description

[0016] Fig. 1 A schematic diagram of the overall structure of an on-site display device for pulse valve diaphragm damage provided by the present invention; Fig. 2 This is a top view of a local display device for pulse valve diaphragm damage provided by the present invention.

[0017] Fig. 3 A schematic diagram of the sealing diaphragm structure of an on-site display device for pulse valve diaphragm damage provided by the present invention; Fig. 4 This is a schematic diagram of the damage indicator structure of a local display device for pulse valve diaphragm damage provided by the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Valve body; 2. Electromagnetic seal; 3. Damage indicator; 4. Working chamber; 5. Detection chamber; 6. Sealing diaphragm; 7. Air inlet; 8. Air inlet; 9. Air outlet; 10. Electromagnetic mounting base; 11. Electromagnetic valve stem; 12. Electromagnetic coil; 13. Control diaphragm; 14. Control spring; 15. Mounting tube; 16. Indicator needle; 17. Return spring; 18. Limit ring; 19. Indicator color ring. Detailed Implementation

[0019] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0020] like Figs. 1 to 4 As shown, an embodiment of the present invention provides a local display device for pulse valve diaphragm damage, including a valve body 1, an electromagnetic seal 2, and a damage indicator 3.

[0021] Specifically, the valve body 1 has a working chamber 4 and a detection chamber 5, and a sealing diaphragm 6 is provided between the working chamber 4 and the detection chamber 5, and an air guide hole 7 is provided on the sealing diaphragm 6.

[0022] The electromagnetic seal 2 is installed at the end of the valve body 1. The electromagnetic seal 2 is used to control the discharge of gas and to control the storage of gas in the working chamber 4 and the detection chamber 5.

[0023] The damage indicator 3 is installed on the air guide hole 7, and the two ends of the damage indicator 3 are located in the working chamber 4 and the detection chamber 5 respectively. The damage indicator 3 determines whether the sealing diaphragm 6 is damaged based on the air pressure difference on both sides of the sealing diaphragm 6.

[0024] In this embodiment, when the pulse valve is working, the air supply manifold is connected to the working chamber 4, and their air pressure values ​​remain consistent. When the electromagnetic seal 2 is closed and the valve body 1 is working normally, the gas in the working chamber 4 slowly enters the detection chamber 5 through the air guide hole 7, meaning there is a certain air pressure difference between the working chamber 4 and the detection chamber 5. When the sealing diaphragm 6 is damaged and leaks air, the gas in the working chamber 4 can quickly enter the detection chamber 5, at which point the air pressure in the working chamber 4 and the detection chamber 5 on both sides of the sealing diaphragm 6 remains consistent. Therefore, the damage indicator 3 can determine whether the sealing diaphragm 6 is damaged based on the air pressure difference on both sides of the sealing diaphragm 6, allowing for quick and intuitive observation of the damage condition and greatly improving the detection efficiency of the sealing diaphragm 6.

[0025] In one specific embodiment, the valve body 1 has an inlet end 8 and an outlet end 9. The inlet end 8 is connected to an air supply manifold, and the outlet end 9 is controlled to connect and disconnect with the electromagnetic seal 2. When the electromagnetic seal 2 seals the outlet end 9, the gas inside the valve body 1 cannot be quickly discharged. When the electromagnetic seal 2 opens the outlet end 9, the gas inside the valve body 1 is quickly discharged. Pulsed gas discharge can be achieved by controlling the on / off frequency of the electromagnetic seal 2.

[0026] Furthermore, the electromagnetic seal 2 includes an electromagnetic mounting base 10, an electromagnetic valve stem 11, an electromagnetic coil 12, and a control diaphragm 13.

[0027] Specifically, the electromagnetic mounting base 10 is mounted on the valve body 1.

[0028] The solenoid valve stem 11 is movably mounted on the solenoid mounting base 10.

[0029] The electromagnetic coil 12 is fixedly installed on the electromagnetic mounting base 10, and the electromagnetic valve rod 11 is magnetically attracted to the electromagnetic coil 12.

[0030] The control diaphragm 13 is disposed within the electromagnetic mounting base 10, and the control diaphragm 13 abuts against the exhaust end 9 by being pushed by the electromagnetic valve rod 11.

[0031] In this embodiment, when the electromagnetic coil 12 is energized, the electromagnetic valve rod 11 moves toward the electromagnetic coil 12, and the control valve plate also moves toward the electromagnetic coil 12. When the electromagnetic coil 12 is de-energized, the electromagnetic valve rod 11 and the control diaphragm 13 move away from the electromagnetic coil 12, and the control diaphragm 13 seals the exhaust end 9.

[0032] In one specific embodiment, a control spring 14 is provided between the electromagnetic mounting base 10 and the control diaphragm 13, with both ends of the control spring 14 abutting against the end of the solenoid valve rod 11 and the control diaphragm 13, respectively. The control spring 14 allows the control diaphragm 13 and the solenoid valve rod 11 to move away from the solenoid coil 12 after the solenoid coil 12 is de-energized, thereby ensuring a good seal between the control diaphragm 13 and the exhaust end 9.

[0033] Furthermore, multiple air guide holes 7 are provided, and the multiple air guide holes 7 are evenly distributed circumferentially on the sealing diaphragm 6.

[0034] In this embodiment, the diameter of the air guide hole 7 is 0.6mm-1mm, and the air guide hole 7 is connected to the sealing diaphragm 6 at a 45° oblique angle.

[0035] When the electromagnetic seal 2 seals the timing end, the gas in the working chamber 4 enters the detection chamber 5 through the air guide hole 7, which reduces the pressure difference on both sides of the sealing diaphragm 6. At the same time, a control spring 14 is provided on the end face of the sealing diaphragm 6 away from the working chamber 4. Under the elastic force of the control spring 14, the air inlet end 8 is sealed.

[0036] Furthermore, the damage indicator 3 includes a mounting tube 15, an indicator needle 16, and a return spring 17.

[0037] Specifically, the mounting tube 15 is fixedly disposed on the inner wall of the air guide hole 7, and the mounting tube 15 is sealed to the inner wall of the air guide hole 7.

[0038] The indicator needle 16 is located inside the mounting tube 15, and the indicator needle 16 is in close and sliding contact with the inner wall of the mounting tube 15, with the end of the indicator needle 16 exposed outside the mounting tube 15.

[0039] The reset spring 17 is installed inside the mounting tube 15, and the reset spring 17 is used to push the indicator needle 16 to move outward from the mounting tube 15.

[0040] In this embodiment, a limiting ring 18 is fixedly provided at one end of the mounting tube 15 away from the indicator needle 16, and the two ends of the reset spring 17 abut against the limiting ring 18 and the indicator needle 16 respectively.

[0041] One end of the indicator needle 16 is located inside the working chamber 4. When the sealing diaphragm 6 is intact, the pressure difference between the working chamber 4 and the detection chamber 5 causes the indicator needle 16 to move away from the working chamber 4. When the sealing diaphragm 6 is damaged, the pressure between the working chamber 4 and the detection chamber 5 becomes equal, and the indicator needle 16 moves towards the working chamber 4 under the force of the return spring 17. The damage status of the sealing diaphragm 6 can be determined simply and conveniently based on the movement of the indicator needle 16.

[0042] To facilitate observation of the movement of the indicator needle 16, an indicator color ring 19 is provided on the area of ​​the indicator needle 16 exposed outside the mounting tube 15. The indicator color ring 19 can be set with two colors. When only one color ring 19 is exposed outside the mounting tube 15, the sealing diaphragm 6 is normal. When both color rings are exposed outside the mounting tube 15, the sealing diaphragm 6 is damaged and needs to be replaced promptly. The degree of damage to the sealing diaphragm 6 can also be judged by the depth to which the indicator color ring 19 penetrates the mounting tube 15; the greater the penetration depth, the greater the degree of damage to the sealing diaphragm 6.

[0043] Compared with the prior art, the present invention has at least the following beneficial effects: This invention installs a damage indicator on the sealing diaphragm and determines whether the diaphragm is damaged based on the air pressure difference across it. This allows for direct observation of the diaphragm's damage without disassembling the valve body, effectively saving maintenance costs and time. It features a simple structure and convenient operation. The above description is a preferred embodiment of this invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

Claims

1. A local display device for pulse valve diaphragm damage, characterized in that: This includes the valve body, electromagnetic seal, and damage indicator. The valve body has a working chamber and a detection chamber, and a sealing diaphragm is provided between the working chamber and the detection chamber, and the sealing diaphragm is provided with an air guide hole; The electromagnetic seal is installed at the end of the valve body. The electromagnetic seal is used to control the discharge of gas and to control the storage of gas in the working chamber and the detection chamber. The damage indicator is installed on the air vent, and the two ends of the damage indicator are located in the working chamber and the detection chamber, respectively. The damage indicator determines whether the sealing diaphragm is damaged based on the air pressure difference on both sides of the sealing diaphragm.

2. The on-site display device for pulse valve diaphragm damage according to claim 1, characterized in that: The valve body has an air inlet end and an air outlet end. The air inlet end is connected to the air supply manifold, and the air outlet end is connected to and closed by the electromagnetic seal.

3. The on-site display device for pulse valve diaphragm damage according to claim 1, characterized in that: The electromagnetic sealing component includes an electromagnetic mounting base, an electromagnetic valve stem, an electromagnetic coil, and a control diaphragm. The electromagnetic mounting base is mounted on the valve body; The solenoid valve stem is movably mounted on the solenoid mounting base; The electromagnetic coil is fixedly installed on the electromagnetic mounting base, and the electromagnetic valve rod is magnetically attracted to the electromagnetic coil. The control diaphragm is disposed within the electromagnetic mounting base, and the control diaphragm abuts against the exhaust end by being pushed by the electromagnetic valve rod.

4. The on-site display device for pulse valve diaphragm damage according to claim 3, characterized in that: A control spring is provided between the electromagnetic mounting base and the control diaphragm, and the two ends of the control spring abut against the end of the electromagnetic valve rod and the control diaphragm, respectively.

5. The on-site display device for pulse valve diaphragm damage according to claim 1, characterized in that: The air guide holes are provided in a plurality of manner, and the plurality of air guide holes are evenly distributed in a circular pattern on the sealing diaphragm.

6. The on-site display device for pulse valve diaphragm damage according to claim 5, characterized in that: The diameter of the air guide hole is 0.6mm-1mm, and the air guide hole is connected to the sealing diaphragm at a 45° oblique angle.

7. The on-site display device for pulse valve diaphragm damage according to claim 5, characterized in that: The damage indicator includes a mounting tube, an indicator needle, and a return spring; The mounting tube is fixedly installed on the inner wall of the air guide hole, and the mounting tube is sealed to the inner wall of the air guide hole. The indicator needle is located inside the mounting tube, and the indicator needle is in close and sliding contact with the inner wall of the mounting tube, with the tip of the indicator needle exposed outside the mounting tube. The reset spring is installed inside the mounting tube, and the reset spring is used to push the indicator needle to move outward from the mounting tube.

8. The on-site display device for pulse valve diaphragm damage according to claim 7, characterized in that: A limit ring is fixedly provided at one end of the mounting tube away from the indicator needle, and the two ends of the reset spring abut against the limit ring and the indicator needle respectively.

9. A local display device for pulse valve diaphragm damage according to claim 7, characterized in that: The area of ​​the indicator needle exposed outside the mounting tube is provided with an indicator color ring.

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