Safety valve in the machinery and equipment to ensure the effectiveness of reliable safety, if there is no safety valve, sometimes may cause explosion accidents. It can open and close autonomously according to the operating pressure, and optimize the safety maintenance system of the machine equipment or pipeline installed in the closed system; When the pressure in the machine equipment or pipeline exceeds the standard value, the pressure relief is automatically opened to ensure that the pressure of the chemical substances in the machine equipment and pipeline is within the specified standard value to prevent the occurrence of safety production accidents. When the pressure of the machine and equipment is too high than the standard value, the safety valve opens automatically, and a part of the steam body in the machine and equipment is discharged to the air, so that the pressure of the machine and equipment does not exceed the specified value, so as to ensure that safety accidents do not occur due to high pressure.

Safety valve is also called speed control valve, several typical structural forms of safety valve:

Piston machine safety valve, valve center is a tablet computer.

The function of the pneumatic valve pressure is on the valve, when the pressure is higher than the standard value set by the torsion spring force, the piston rod is pushed open, and a part of the air is compressed from the valve to the air.

When the pressure of the pneumatic valve is lower than the standard value, the torsion spring pushes the piston rod down and closes the valve. The valve face should be clean.

Torsion spring safety valve refers to the sealing of piston valve and valve disc depends on the interaction force of torsion spring.

Bar type safety valve is the mutual force of the bar and the hammer.

With the requirements of large space, there is a monopulse safety valve, also known as the dominant safety valve, which is composed of a main safety valve and an auxiliary valve. When the chemical pressure in the pipeline is higher than the specified pressure value, the auxiliary valve is opened first, the chemical substances along the hose along the main safety valve, and the main safety valve is opened to reduce the increased chemical pressure.

The output of the safety valve depends on the specifications of the high pressure gate valve and the opening height of the piston valve, which can also be divided into:

The full opening height is the inner diameter of the high pressure gate valve (1/15) ~ (1/20), and the full opening is (1/3) ~ (1/4).

In addition, with the application of different provisions, there are closed and non-closed.

Closed that is, the discharged ingredients do not leak, all along the specified entrance and exit, generally used for harmful and irritating chemical substances.

Non-enclosed is generally used for non-toxic or non-corrosive chemicals.