Zero pressure valve for a material conveying pipe

Abstract

The utility model provides a zero pressure valve of material conveying pipeline relates to the technical field of gate board, including air inlet pipe, gas inlet pipe and material conveying pipe, air inlet pipe is installed air inlet valve and air regulating valve in proper order on, and air inlet pipe export end is connected with material conveying pipe, gas inlet pipe is connected with gas pressure regulator, and the diaphragm is equipped in gas pressure regulator, and the nozzle is equipped in gas pressure regulator upper portion, and the nozzle is connected with one end of pulse tube, and the other end of pulse tube is closedly connected with air inlet pipe, the throttle device is equipped in gas pressure regulator top, and one end of gas outlet pipe is connected with gas pressure regulator export, and the other end of gas outlet pipe is connected with material conveying pipe, and the double -pipe mixed type combustor is equipped with in gas outlet pipe and material conveying pipe connection end, and gas regulating valve is installed on gas outlet pipe.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically to a zero-pressure valve for a material conveying pipeline. Background Technology

[0002] Before glass tube forming, the raw materials need to be burned and refined into molten glass in a kiln. The raw materials enter the kiln and are conveyed through a conveying pipe. A control valve is installed on the conveying pipe to control the ratio of gas and air to ensure that the flame remains consistent. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a zero-pressure valve for a material conveying pipeline. This valve can regulate the intake of air and gas through a regulating valve, thereby ensuring that the flame combustion is always consistent.

[0004] To address the problems existing in the background technology, this utility model adopts the following technical solution: It includes an air inlet pipe, a gas inlet pipe, and a material conveying pipe. An air inlet valve and an air regulating valve are sequentially installed on the air inlet pipe, and the outlet end of the air inlet pipe is connected to the material conveying pipe. The gas inlet pipe is connected to a gas pressure regulator, which contains a diaphragm and a nozzle on its upper part. The nozzle is connected to one end of a pulse tube, and the other end of the pulse tube is closedly connected to the air inlet pipe. A throttling device is provided at the top of the gas pressure regulator. The outlet end of the gas pressure regulator is connected to one end of a gas outlet pipe, and the other end of the gas outlet pipe is connected to the material conveying pipe. A dual-pipe mixing burner is provided at the connection end between the gas outlet pipe and the material conveying pipe, and a gas regulating valve is installed on the gas outlet pipe.

[0005] The beneficial effects of this utility model are: This utility model regulates the air intake by using an air regulating valve, and regulates the gas intake by using a gas pressure regulating valve and a gas regulating valve in combination, thereby controlling the intake of gas and air and achieving control over the mixing ratio of gas and air for combustion, thus ensuring that the combustion flame remains consistent. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0007] Reference Figure 1The present invention specifically adopts the following implementation method: it includes an air inlet pipe 10, a gas inlet pipe 11, and a material conveying pipe 12. An air inlet valve 1 and an air regulating valve 2 are sequentially installed on the air inlet pipe 10, and the outlet end of the air inlet pipe 10 is connected to the material conveying pipe 12. The gas inlet pipe 11 is connected to a gas pressure regulator 5. The gas pressure regulator 5 is provided with a diaphragm 9. A nozzle 7 is provided on the upper part of the gas pressure regulator 5. The nozzle 7 is connected to one end of a pulse tube 8. The other end of the pulse tube 8 is closedly connected to the air inlet pipe 10. A throttling device 6 is provided on the top of the gas pressure regulator 5. The outlet end of the gas pressure regulator 5 is connected to one end of a gas outlet pipe 13. The other end of the gas outlet pipe 13 is connected to the material conveying pipe 12. A dual-pipe mixing burner 3 is provided at the connection end between the gas outlet pipe 13 and the material conveying pipe 12. A gas regulating valve 4 is installed on the gas outlet pipe 13.

[0008] When the zero-pressure valve of this material conveying pipeline is in use, the air intake is adjusted by the air regulating valve 2, and the gas intake is adjusted by the cooperation of the gas pressure regulating valve 5 and the gas regulating valve 4. This controls the intake of gas and air, thereby controlling the ratio of gas and air to be mixed and burned, thus ensuring that the combustion flame remains consistent.

[0009] The gas pressure regulator 5 contains an inner diaphragm 9 that senses changes in outlet pressure and drives the valve stem to adjust the valve opening, thereby maintaining a stable outlet pressure. Its core principle is to utilize the pressure difference across the diaphragm to drive the mechanical structure. Specifically, when the outlet pressure increases, the diaphragm moves upward, compressing the spring, closing the valve, and reducing the gas flow to lower the pressure; when the outlet pressure decreases, the spring pushes the diaphragm downward, opening the valve, increasing the gas flow to restore the pressure.

[0010] Throttling devices regulate gas pressure by controlling the opening, closing, and size of the gas flow channel. Their core principle is to use pressure difference to drive the movement of a diaphragm or valve disc, thereby adjusting the opening of the main valve.

[0011] The throttling device 6 senses changes in downstream pressure and controls pilot gas to enter below the diaphragm 9, creating a pressure differential that drives the main valve to open and close. When the downstream pressure is lower than the set value, the diaphragm of the pulse tube 8 moves downward, opening the valve. Pilot gas enters below the diaphragm 9, pushing the diaphragm 9 upward, increasing the main valve opening, increasing the gas flow, and causing the downstream pressure to rise. When the downstream pressure is higher than the set value, the diaphragm of the pulse tube 8 moves upward, closing the valve. Simultaneously, the exhaust valve releases some pilot gas, reducing the pressure below the diaphragm 9, decreasing the main valve opening, and lowering the downstream pressure.

[0012] Meanwhile, the throttling device 6 serves as an overpressure protection mechanism. If the downstream pressure continues to rise above the safety threshold, the safety shut-off valve will automatically close to cut off the gas supply and prevent equipment damage.

Claims

1. A zero-pressure valve for a material conveying pipeline, characterized in that: It includes an air inlet pipe (10), a gas inlet pipe (11), and a material conveying pipe (12). An air inlet valve (1) and an air regulating valve (2) are installed sequentially on the air inlet pipe (10). The outlet end of the air inlet pipe (10) is connected to the material conveying pipe (12). The gas inlet pipe (11) is connected to a gas pressure regulator (5). A diaphragm (9) is provided inside the gas pressure regulator (5). A nozzle (7) is provided on the upper part of the gas pressure regulator (5). The nozzle (7) is connected to one end of a pulse tube (8). The other end of the pulse tube (8) is closedly connected to the air inlet pipe (10). A throttling device (6) is provided on the top of the gas pressure regulator (5). The outlet end of the gas pressure regulator (5) is connected to one end of a gas outlet pipe (13). The other end of the gas outlet pipe (13) is connected to the material conveying pipe (12). A dual-pipe mixing burner (3) is provided at the connection end between the gas outlet pipe (13) and the material conveying pipe (12). A gas regulating valve (4) is installed on the gas outlet pipe (13).

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