Device for prolonging opening speed of pneumatic valve

Abstract

The invention belongs to opening devices, and particularly relates to a device for prolonging the opening speed of a pneumatic valve. The device for prolonging the opening speed of the pneumatic valve comprises a nut, the nut is in airtight connection with an outlet of the pneumatic valve through a screw thread, a pressure reduction area is arranged in the nut, and an exhaust hole is formed in the top end of the pressure reduction area. The pneumatic valve has the remarkable effects that (1) gas of gas soil of the pneumatic valve is slowly discharged, the opening speed of the pneumatic valve is increased, a certain settling time is provided for resin and impurities in the resin, and the working efficiency is greatly improved; and (2) the opening degree of the manual valve does not need to be manually controlled, the labor amount is reduced, and unattended operation is realized. And (3) the capital investment is reduced, so that the equipment has new functions. And (4) the process is improved, and channeling is prevented from being formed in the high-flow process of the resin.

Description

Technical Field

[0001] This invention pertains to opening devices, specifically a device for extending the opening speed of a pneumatic valve. Background Technology

[0002] In-situ leaching is currently the most advanced and environmentally friendly in-situ leaching process for sandstone uranium deposits, both domestically and internationally. This process consists of two parts: the well site and the hydrometallurgical treatment. The hydrometallurgical process comprises process piping, towers, resin, valves, and other equipment and materials. The well site provides the leaching solution for transport to the hydrometallurgical treatment. When the process treats 100m³... 3 When the flow rate is above / h, from 0m 3 The flow rate was increased to 100m / h within 1 minute. 3 / h flow rate. The resin inside the adsorption tower is impacted by flow rate and pressure, causing channeling within the resin. This carries impurities from the resin to the outlet mesh box of the adsorption tower, hindering the flow rate of the leachate, and causing the leachate flow rate to slowly decrease. This makes it impossible to increase the leachate flow rate. If the leachate flow rate is increased from 0 m³ / h... 3 / h increase 80m 3 / h, wait 5 minutes, then reduce the leachate flow rate from 80m³ / h. 3 / h increased to 100m 3 / h or more. This allows the resin and impurities time to settle, preventing impurities from accumulating in large quantities on the outlet screen of the adsorption tower and hindering the flow rate of the leachate.

[0003] To prevent impurities in the resin from adhering to the outlet mesh box of the adsorption tower, the opening of the pneumatic valve needs to be controlled. While a regulating pneumatic valve could achieve this opening, the existing valve is already installed in the process. Purchasing a new regulating valve would render the original valve obsolete, resulting in significant asset waste. Furthermore, the process control precision does not require a regulating valve. Therefore, researching a device to slow down the opening speed of the pneumatic valve is essential. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a device for extending the opening speed of a pneumatic valve.

[0005] The present invention is implemented as follows: a device for extending the opening speed of a pneumatic valve, comprising a nut, the nut being airtightly connected to the outlet of the pneumatic valve via threads, a pressure reducing zone being provided inside the nut, and an exhaust hole being provided at the top of the pressure reducing zone.

[0006] As described above, in a device for extending the opening speed of a pneumatic valve, the pressure reducing zone has a conical structure, the bottom dimension of the pressure reducing zone matches the inner diameter of the nut, and the ratio of the height of the pressure reducing zone to the bottom diameter is 2:1 to 3:1.

[0007] In the device for extending the opening speed of a pneumatic valve as described above, the diameter of the exhaust port ranges from 1% to 10% of the diameter of the pneumatic valve.

[0008] In the device for extending the opening speed of a pneumatic valve as described above, the diameter of the exhaust port ranges from 0.1 to 1 mm.

[0009] As described above, in a device for extending the opening speed of a pneumatic valve, the diameter of the exhaust port is 0.3 mm.

[0010] The significant effects of this invention are: (1) It slowly discharges the gas from the pneumatic valve, thereby increasing the speed at which the pneumatic valve opens and allowing the resin and impurities within it to settle, thus greatly improving work efficiency. (2) It eliminates the need for manual control of the manual valve opening, reducing labor and enabling unattended operation. (3) It reduces capital investment and gives the equipment new functions. (4) It improves the process and prevents channeling from forming within the resin during high-flow-rate processes. Attached Figure Description

[0011] Figure 1a Schematic diagram of the delayed exhaust device;

[0012] Figure 1b : Figure 1a Top view.

[0013] In the diagram: 1. Exhaust port; 2. Pressure relief zone; 3. Thread; 4. Nut; 5. Air inlet. Detailed Implementation

[0014] A device for extending the opening speed of a pneumatic valve includes a nut 4, which is airtightly connected to the outlet of the pneumatic valve via a thread 3. A pressure-reducing zone 2 is provided inside the nut 4, and an exhaust hole 1 is provided at the top of the pressure-reducing zone 2.

[0015] The pressure relief zone 2 has a conical structure. The bottom dimension of the pressure relief zone 2 matches the inner diameter of the nut 4. The ratio of the height of the pressure relief zone 2 to the bottom diameter is 2:1 to 3:1.

[0016] The diameter of exhaust port 1 is in the range of 1% to 10% of the diameter of the pneumatic valve.

[0017] The diameter of the vent hole 1 ranges from 0.1 to 1 mm.

[0018] The diameter of vent hole 1 is 0.3 mm.

[0019] The working principle of the device in this application is roughly as follows:

[0020] Pneumatic valves utilize the pressure difference between an air chamber and a spring to control their opening and closing. Similarly, the opening speed of a pneumatic valve can be controlled using this pressure difference. For example, in typical processes, the opening and closing speed of a pneumatic valve is within 30 seconds, with a 10mm diameter exhaust port and a fast exhaust speed. Now, according to process requirements, the opening speed of the pneumatic valve needs to be above 5 seconds. In this case, the exhaust port of the pneumatic valve can be reduced by 0.1 to 1mm. This slowly releases the air pressure from the air chamber, as shown in Figure 1a-1b.

[0021] The operation process of the device in this application is roughly as follows:

[0022] Since the connector of the device and the exhaust port of the pneumatic valve are connected by a thread, the device can be installed on the exhaust port of the pneumatic valve.

Claims

1. A device for extending the opening speed of a pneumatic valve, characterized in that: Includes a nut (4), which is airtightly connected to the outlet of the pneumatic valve via a thread (3). A pressure-reducing zone (2) is provided inside the nut (4), and an exhaust hole (1) is provided at the top of the pressure-reducing zone (2).

2. The device for extending the opening speed of a pneumatic valve as described in claim 1, characterized in that: The pressure relief zone (2) is a conical structure. The bottom dimension of the pressure relief zone (2) matches the inner diameter of the nut (4). The ratio of the height of the pressure relief zone (2) to the bottom diameter is 2:1 to 3:

1.

3. The device for extending the opening speed of a pneumatic valve as described in claim 2, characterized in that: The diameter of the exhaust port (1) is 1% to 10% of the diameter of the pneumatic valve.

4. The device for extending the opening speed of a pneumatic valve as described in claim 3, characterized in that: The diameter of the vent (1) ranges from 0.1 to 1 mm.

5. The device for extending the opening speed of a pneumatic valve as described in claim 4, characterized in that: The diameter of the vent hole (1) is 0.3 mm.

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