Rapid fault detection device for pneumatic pinch valve

Abstract

The utility model discloses a rapid fault detection device for a pneumatic pinch valve, which comprises a detection pipe, a rapid connector arranged at one end of the detection pipe and used for being connected with a control port of the pneumatic pinch valve, and an air inlet pipeline arranged on the side face of the detection pipe and used for conveying compressed air into the pneumatic pinch valve through the rapid connector. Compared with the prior art, the pneumatic pinch valve has the advantages that compressed air is conveyed into the pneumatic pinch valve, the expansion condition of the rubber air bag is observed, whether the pneumatic pinch valve breaks down or not can be rapidly judged, especially the problems of damage or elasticity failure of the rubber sleeve in the valve body are solved, a traditional overhauling mode is avoided, and the working efficiency is improved; and the detection time is greatly shortened. And 2) the internal pressure of the pneumatic pinch valve is measured by using the pressure gauge, and the deformation quantity of the rubber air bag is accurately measured through the measuring mechanism, so that the fault degree of the pneumatic pinch valve can be accurately judged, and the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic pinch valve fault detection, in particular to a pneumatic pinch valve fault rapid detection device. Background Art

[0002] Pneumatic pinch valves have the advantages of smooth medium flow, low friction resistance and no leakage. They are suitable for conveying and controlling sealed gases, liquids, solids and powdered media. There is a highly elastic sleeve inside the valve body to seal the pipeline. When the pressurized pipeline is closed, it opens when the pressure is lost.

[0003] Pneumatic pinch valves are widely used in mines, primarily for media conveying control in equipment such as ceramic filters, flotation machines, concentrators, and slurry tanks. These valves are often arranged in multiple rows, connected to a main pipeline. Pneumatic pinch valves have an opening frequency set based on actual operating conditions. A higher opening frequency increases the susceptibility to failure. Experience shows that failures are primarily concentrated in the rubber sleeve inside the valve body. If the sleeve is damaged, its rebound performance is reduced, or its elasticity fails, the entire gate valve will fail, affecting media flow.

[0004] During maintenance and overhaul, the pneumatic pinch valve must be disassembled and inspected to locate the faulty valve. This complex operation not only significantly reduces equipment maintenance efficiency but also increases the workload of maintenance personnel. Fault location is particularly difficult when multiple pneumatic pinch valves are deployed in parallel, making it essential to develop a simple and efficient method for locating the faulty valve.

[0005] The purpose of the utility model is to overcome the deficiencies in the above-mentioned prior art and solve the current technical defects. The utility model provides a rapid detection device for a pneumatic pinch valve fault, a rapid detection device for a pneumatic pinch valve fault, so as to improve the maintenance efficiency and reduce the labor intensity of maintenance personnel. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a pneumatic pinch valve fault rapid detection device to solve the above problem.

[0007] To achieve the above-mentioned objectives, the utility model provides a rapid detection device for a pneumatic pinch valve fault, comprising a detection tube, a quick connector provided at one end of the detection tube for connecting to a control port of the pneumatic pinch valve, an air inlet pipe provided on the side of the detection tube for delivering compressed gas into the pneumatic pinch valve through the quick connector, a rubber airbag provided at the other end of the detection tube for collecting gas in the pneumatic pinch valve, and an air discharge pipe provided on the side of the detection tube for releasing the gas in the rubber airbag.

[0008] Compared with existing technologies, the present invention offers the following advantages: 1) By delivering compressed gas into the pneumatic pinch valve and observing the expansion of the rubber bladder, the present invention can quickly determine whether the pneumatic pinch valve is faulty, particularly issues such as damage to the rubber sleeve inside the valve body or elastic failure. This avoids traditional disassembly and inspection methods, significantly reducing inspection time. 2) By using a pressure gauge to measure the internal pressure of the pneumatic pinch valve and a measuring mechanism to precisely measure the deformation of the rubber bladder, the present invention can accurately determine the severity of the pneumatic pinch valve fault, improving detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0010] Figure 1 This is a schematic diagram of the structure of the utility model.

[0011] Figure 2 Schematic diagram of the pneumatic pinch valve structure. DETAILED DESCRIPTION

[0012] The following is combined with Figure 1-2 The specific implementation methods of the present utility model are further described in detail.

[0013] like Figure 1-2 As shown, the utility model is a rapid detection device for a pneumatic pinch valve fault, comprising a detection tube 1, a quick connector 3 provided at one end of the detection tube 1 for connecting to a control port 21 of the pneumatic pinch valve 2, an air inlet pipe 4 provided on the side of the detection tube 1 for conveying compressed gas into the pneumatic pinch valve 2 through the quick connector 3, a rubber airbag 5 provided at the other end of the detection tube 1 for collecting gas in the pneumatic pinch valve 2, and an air discharge pipe 6 provided on the side of the detection tube 1 for releasing the gas in the rubber airbag 5.

[0014] The air intake line 4 is provided with a first control valve 7. When the first control valve 7 is opened, air can be inflated into the pneumatic pinch valve 2 through the air intake line 4. The air discharge line 6 is provided with an exhaust valve 8. When the exhaust valve 8 is opened, it is used to discharge the gas in the rubber airbag 5. The detection tube 1 is located between the air intake line 4 and the air discharge line 6 and is provided with a second control valve 9. When in use, air is inflated into the pneumatic pinch valve 2 through the air intake line 4. By opening the second control valve 9, the gas in the pneumatic pinch valve 2 enters the rubber airbag 5. It can be understood that a normal pneumatic pinch valve 2 has good air tightness and can accommodate more air, which will make the rubber airbag 5 expand more. When the pneumatic pinch valve 2 is damaged, the air contained in the pneumatic pinch valve 2 will be much less, which makes only a small amount of air enter the rubber airbag 5 when the second control valve 9 is opened, so that the rubber airbag 5 can only expand slightly.

[0015] In some embodiments, a pressure gauge 10 is provided on the detection tube 1 between the air inlet line 4 and the second control valve 9. After the pneumatic pinch valve 2 is inflated, the value of the pressure gauge 10 is observed. If the value of the pressure gauge 10 becomes smaller, it indicates that the rubber sleeve 22 is damaged.

[0016] In order to make the deformation of the rubber airbag 5 more intuitive, a measuring mechanism 11 for measuring the deformation of the rubber airbag 5 is provided at one end of the detection tube 2 located at the rubber airbag 5 .

[0017] In some embodiments, the measuring mechanism 11 includes a fixed ring 111 fixedly connected to the detection tube 1. A measuring scale 112 is provided on the side of the fixed ring 111 away from the detection tube 1 and slides in the radial direction. The head of the measuring scale 112 points to the center of the rubber airbag 5. When the second control valve 9 is opened, the air in the pneumatic pinch valve 2 is discharged into the rubber airbag 5 under the elastic force of the rubber sleeve 22. When the rubber airbag 5 expands, it pushes the measuring scale 112 to move on the fixed ring 111. The deformation of the rubber airbag 5 can be obtained by observing the change in the corresponding numerical value at the connection between the measuring scale 112 and the fixed ring 111.

[0018] In some embodiments, a protective plate 113 is fixed to one end of the measuring scale 112 close to the rubber airbag 5. The protective plate 113 is a spherical structure, which increases the contact area between the rubber airbag 5 and the measuring scale 112 and reduces the pressure between the rubber airbag 5 and the measuring scale 112.

[0019] The operating procedures of the faulty pneumatic pinch valve rapid detection device are as follows:

[0020] 1. Connect the quick connector 3 to the control port 21 of the pneumatic pinch valve 2.

[0021] 2. Connect the gas source to the first control valve 7.

[0022] 3. After closing the second control valve 9, open the exhaust valve 8 to exhaust the gas in the rubber airbag 5 and then close the exhaust valve 8.

[0023] 4. Open first control valve 7 and supply compressed air to pneumatic pinch valve 2 through air inlet pipe 4. This will cause the rubber sleeve 22 inside the pneumatic pinch valve 2 to contract inward under pressure. Wait for the pressure gauge 10 to stabilize and record the reading. If the measured pressure is significantly lower than the air source pressure, the rubber sleeve 22 inside the pneumatic pinch valve 2 is damaged.

[0024] 5. Close the first control valve 7, open the second control valve 9, and measure the expansion data of the rubber airbag 5 through the measuring mechanism 11 and record it.

[0025] 6. Compare the pressure of the new valve and the baseline data of the expansion of the rubber airbag 5 to determine the elastic failure status of the rubber sleeve 22 inside the pneumatic pinch valve 2.

[0026] The utility model aims to realize a rapid detection device for a pneumatic pinch valve fault. The device can quickly and accurately detect whether the pneumatic pinch valve 2 has a fault, especially for problems such as damage or elastic failure of the rubber sleeve 22 inside the valve body, thereby improving maintenance efficiency and reducing the labor intensity of maintenance personnel.

[0027] Finally, it should be noted that the above description is merely 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 will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pneumatic pinch valve fault rapid detection device, characterized in that: The invention comprises a detection tube, a quick connector provided at one end of the detection tube for connecting to a control port of a pneumatic pinch valve, an air inlet pipe provided on the side of the detection tube for conveying compressed gas into the pneumatic pinch valve through the quick connector, a rubber airbag provided at the other end of the detection tube for collecting gas in the pneumatic pinch valve, and an air discharge pipe provided on the side of the detection tube for releasing gas in the rubber airbag.

2. A pneumatic pinch valve fault rapid detection device according to claim 1, characterized in that: The air intake pipeline is provided with a first control valve, the air discharge pipeline is provided with an exhaust valve, and the detection tube is provided with a second control valve between the air intake pipeline and the air discharge pipeline.

3. A pneumatic pinch valve fault rapid detection device according to claim 2, characterized in that: The detection tube is located between the air intake pipeline and the second control valve and is provided with a pressure gauge.

4. A pneumatic pinch valve fault rapid detection device according to claim 1, characterized in that: The detection tube is located at one end of the rubber airbag and is provided with a measuring mechanism for measuring the deformation of the rubber airbag.

5. A pneumatic pinch valve fault rapid detection device according to claim 4, characterized in that: The measuring mechanism includes a fixing ring fixedly connected to the detection tube. A measuring scale is provided on a side of the fixing ring away from the detection tube and is slidably provided in a radial direction. The head of the measuring scale points to the center of the rubber airbag.

6. A pneumatic pinch valve fault rapid detection device according to claim 5, characterized in that: A protective plate is fixed on one end of the measuring ruler close to the rubber airbag.

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