Pneumatic flexible valve with signal feedback

Abstract

The utility model relates to the technical field of valves, in particular to a pneumatic flexible valve with signal feedback, which comprises a valve shell, an air source connector is arranged at the center of the right side of the valve shell, inner mounting flange rings are fixedly welded at the top end and the bottom end of the inner wall of the valve shell, and a rubber liner is arranged in the middle of the inside of the valve shell. A signal feedback device interface is fixedly arranged in the center of the left side outside the valve shell, and a signal feedback device is fixedly connected to the left side of the signal feedback device interface. According to the pneumatic flexible valve with the signal feedback function, the signal feedback device is additionally arranged, the condition of the valve can be visually displayed, it is guaranteed that the valve operates within a reasonable pressure range, the problems of valve damage, damage, air leakage and the like caused by too large air pressure are avoided, and it is guaranteed that the valve is maintained in time and operates stably; the valve inner container is optimized into an arc shape from an existing I shape, the expansion degree of the rubber inner container in the pneumatic control process is relieved, tension is reduced, rubber at the valve flange connecting position is prevented from being cracked and damaged, and the service life of the valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a pneumatic flexible valve with signal feedback. Background Technique

[0002] Traditional pneumatic flexible valves are composed of cast iron or steel shells and rubber inner liners; compressed air is used to deform and extrude the rubber inner liner to achieve closing, and when opening, the solenoid valve controls the quick exhaust valve to deflate to open the valve, which is widely used in the fields of chemical industry, electric power, metallurgy, etc.

[0003] When adjusting the pressure parameters of the existing valves, the pressure can only be controlled at the air source, a certain pressure value is set, and then the closing condition of the valve is observed and detected. Through continuous testing, the appropriate intake pressure value is determined to ensure the closing effect of the valve. The operation process is cumbersome and complex, and the distance between the valve installation position and the pressure regulating controller is far, which is time-consuming and laborious. Moreover, the existing valves are connected by flanges. Due to the flange bolt holes and sealing strips and other closing ports, air leakage often occurs, resulting in air pressure loss. To ensure the normal closing of the valve, it is often necessary to increase the air pressure to complete, but there is no visible and accurate value to guide the adjustment, which may lead to excessive air pressure adjustment and damage to the valve inner liner, and it is difficult to identify faults. The closing effect of the valve can only be judged by whether the valve leaks liquid and whether there is an air leakage sound, and it is not easy to identify; secondly, the existing valve rubber inner liner is in an I shape, and it is not easy for the valve inner liner to deform when being pressed tightly, the pressing air pressure is high, and the inner liner is damaged greatly after long-term repeated opening and closing operations. Moreover, the connection surface of the rubber inner liner belongs to a vertical connection, the contact surface is small, and the connection surface is easy to crack after long-term pressing and shrinking.

[0004] To solve the above problems, we made improvements and proposed a pneumatic flexible valve with signal feedback. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model provides a pneumatic flexible valve with signal feedback, including a valve housing. A gas source interface is opened at the center of the right side of the valve housing. Inner installation flange rings are fixedly welded to the top and bottom of the inner wall of the valve housing. A rubber inner liner is arranged in the middle of the valve housing. A signal feedback device interface is fixedly arranged at the center of the left side outside the valve housing, and a signal feedback device is fixedly connected to the left side of the signal feedback device interface.

[0007] As a preferred technical solution of the utility model, a valve cavity is arranged between the inside of the valve housing and the rubber inner liner, and the valve cavity is communicated with the gas source interface.

[0008] As a preferred technical solution of the present utility model, outer mounting flange rings are fixedly installed on the outer surfaces of both of the inner mounting flange rings. Countersunk holes are circumferentially and equidistantly formed on the outer surface edges of both of the outer mounting flange rings, and bolt holes are circumferentially and equidistantly formed on the outer surface edges of the inner mounting flange rings. The number of bolt holes is equal to that of the countersunk holes, and their positions correspond one by one. Flange bolts are arranged in the countersunk holes of the outer mounting flange rings, and the outer mounting flange rings are fixedly connected to the inner mounting flange rings through the flange bolts and the bolt holes.

[0009] As a preferred technical solution of the present utility model, the top and bottom of the rubber inner bladder are fixedly connected to the inner walls of the two outer mounting flange rings respectively, and the middle part of the rubber inner bladder bends towards its interior.

[0010] As a preferred technical solution of the present utility model, an alarm lamp cover is fixedly installed on the left side of the signal feedback device. A sensor is fixedly installed inside the signal feedback device through screws, and the probe of the sensor extends into the valve cavity through the signal feedback device interface.

[0011] As a preferred technical solution of the present utility model, an indicator alarm is fixedly and electrically connected to the left side of the sensor through screws. The indicator alarm is located inside the alarm lamp cover. The sensor is electrically connected to the sensor. A pressure signal output port is fixedly arranged outside the signal feedback device, and the pressure signal output port is electrically connected to the sensor.

[0012] The beneficial effects of the present utility model are as follows: For this pneumatic flexible valve with signal feedback, a signal feedback device is added outside the valve, which can visually display the valve condition, ensure that the valve operates within a reasonable pressure range, avoid problems such as valve damage, breakage, and air leakage caused by excessive air pressure, and can accurately judge problems such as valve air leakage and faults in a timely manner, ensuring timely valve maintenance and stable operation; the inner bladder of the valve is optimized from the existing I-shaped to an arc shape, slowing down the expansion degree of the rubber inner bladder during the air control process, reducing the tension, avoiding rubber cracking and damage at the valve flange connection, and extending the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used to explain the present utility model together with the embodiments of the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0014] Figure 1 is a structural schematic diagram of a pneumatic flexible valve with signal feedback of the present utility model;

[0015] Figure 2 is a cross-sectional structural schematic diagram of a pneumatic flexible valve with signal feedback of the present utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the signal feedback device of a pneumatic flexible valve with signal feedback of the present utility model;

[0017] In the figure: 1. Valve housing; 101. Valve cavity; 2. Air source interface; 3. Inner mounting flange ring; 4. Outer mounting flange ring; 5. Bolt hole; 6. Flange bolt; 7. Rubber inner bladder; 8. Signal feedback device interface; 9. Signal feedback device; 10. Alarm lamp cover; 11. Sensor; 12. Indicator alarm; 13. Pressure signal output port. Specific embodiments

[0018] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0019] Embodiment: As Figures 1-3 shown, a pneumatic flexible valve with signal feedback includes a valve housing 1. An air source interface 2 is provided at the center of the right side of the valve housing 1. Inner mounting flange rings 3 are fixedly welded to the top and bottom inner walls of the valve housing 1. A rubber inner bladder 7 is arranged in the middle of the valve housing 1. A signal feedback device interface 8 is fixedly arranged at the center of the left side of the outside of the valve housing 1. A signal feedback device 9 is fixedly connected to the left side of the signal feedback device interface 8.

[0020] A valve cavity 101 is arranged between the inside of the valve housing 1 and the rubber inner bladder 7, and the valve cavity 101 is communicated with the air source interface 2.

[0021] Outer mounting flange rings 4 are fixedly installed on the outer surfaces of the two inner mounting flange rings 3. Countersunk holes are circumferentially arranged at equal intervals on the outer surface edges of the two outer mounting flange rings 4. Bolt holes 5 are circumferentially arranged at equal intervals on the outer surface edges of the inner mounting flange rings 3. The number of bolt holes 5 is equal to the number of countersunk holes and their positions correspond one by one. Flange bolts 6 are arranged in the countersunk holes of the outer mounting flange rings 4. The outer mounting flange rings 4 are fixedly connected to the inner mounting flange rings 3 through the flange bolts 6 and the bolt holes 5.

[0022] The top and bottom of the rubber inner bladder 7 are respectively fixedly connected to the inner walls of the two outer mounting flange rings 4, and the middle part of the rubber inner bladder 7 bends towards its inside.

[0023] An alarm lamp cover 10 is fixedly installed on the left side of the signal feedback device 9. A sensor 11 is fixedly installed inside the signal feedback device 9 through screws. The probe of the sensor 11 extends into the valve cavity 101 through the signal feedback device interface 8.

[0024] On the left side of the sensor 11, an indicator alarm 12 is fixedly connected electrically through a screw. The indicator alarm 12 is located inside the alarm lamp cover 10. The sensor 11 is electrically connected to the sensor 11. An external pressure signal output port 13 is fixedly provided on the signal feedback device 9. The pressure signal output port 13 is electrically connected to the sensor 11. The pressure signal output port 13 is externally connected to the central control system device and displays the pressure data on the PLC screen of the system.

[0025] Working principle: For this pneumatic flexible valve with signal feedback, when it is not in use, the pneumatic flexible valve is in an open state, and there is no air pressure inside the valve at this time; when it is operating, compressed air enters the valve cavity 101 from the air source interface 2. Under the action of pressure, the rubber inner bladder 7 deforms and is flattened, and its interior fits tightly, achieving valve closure. When the closing pressure range is between the normal 0.3 ± 0.05 MPa, the indicator alarm 12 of the signal feedback device 9 is in a normal state. When the pressure value exceeds the normal pressure range, the indicator alarm 12 beeps and the red light flashes, reminding the inspection personnel to check and repair, which is convenient for judging the problematic valve; when the valve opens, the gas is instantaneously discharged from the air source interface 2, and the rubber inner bladder 7 returns to its original state, and the valve opens.

[0026] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A pneumatic flexible valve with signal feedback, comprising a valve housing (1), characterized in that, A gas source interface (2) is provided at the center on the right side of the valve housing (1). Inner mounting flange rings (3) are fixedly welded to the top and bottom inner walls of the valve housing (1). A rubber inner bladder (7) is disposed in the middle of the interior of the valve housing (1). A signal feedback device interface (8) is fixedly provided at the center on the left side of the outside of the valve housing (1). A signal feedback device (9) is fixedly connected to the left side of the signal feedback device interface (8).

2. The pneumatic flexible valve with signal feedback according to claim 1, characterized in that, A valve cavity (101) is provided between the interior of the valve housing (1) and the rubber inner bladder (7). The valve cavity (101) is in communication with the gas source interface (2).

3. A pneumatic flexible valve with signal feedback according to claim 1, characterized in that, Outer mounting flange rings (4) are fixedly mounted on the outer surfaces of the two inner mounting flange rings (3). Countersunk holes are circumferentially provided at equal intervals on the outer surface edges of the two outer mounting flange rings (4). Bolt holes (5) are circumferentially provided at equal intervals on the outer surface edges of the inner mounting flange rings (3). The number of bolt holes (5) is equal to the number of countersunk holes and their positions correspond one by one. Flange bolts (6) are disposed in the countersunk holes of the outer mounting flange rings (4). The outer mounting flange rings (4) are fixedly connected to the inner mounting flange rings (3) through the flange bolts (6) and the bolt holes (5).

4. The pneumatic flexible valve with signal feedback according to claim 3, characterized in that, The top and bottom of the rubber inner bladder (7) are fixedly connected to the inner walls of the two outer mounting flange rings (4) respectively. The middle part of the rubber inner bladder (7) bends towards its interior.

5. The pneumatic flexible valve with signal feedback according to claim 1, characterized in that, An alarm lamp cover (10) is fixedly mounted on the left side of the signal feedback device (9). A sensor (11) is fixedly mounted inside the signal feedback device (9) by screws. The probe of the sensor (11) extends into the valve cavity (101) through the signal feedback device interface (8).

6. The pneumatic flexible valve with signal feedback according to claim 5, characterized in that, An indicator alarm (12) is fixedly and electrically connected to the left side of the sensor (11) by screws. The indicator alarm (12) is located inside the alarm lamp cover (10). The sensor (11) is electrically connected to the sensor (11). A pressure signal output port (13) is fixedly provided on the outside of the signal feedback device (9). The pressure signal output port (13) is electrically connected to the sensor (11).

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