In fact, many enterprises in China do not know very much about the water treatment and environmental protection equipment in the sewage treatment project, now the environmental pollution is so serious, many colleagues in the environmental protection industry are working hard for the sustainable development of China's environmental protection profession, so the following is the basic knowledge of environmental protection water treatment to give us a brief over, and the following gives us an analysis of the production and piping process of the workshop, the principle of electric valves and pneumatic valves and their respective advantages.

Electric valves usually consist of electric actuators and valves. The electric valve uses electrical energy as the power to drive the valve through the electric actuator to realize the opening and closing action of the valve. Then the purpose of switching on and off the pipeline medium is achieved. The electric valve action force distance is larger than that of ordinary valves, the electric valve opening and closing speed can be adjusted, the structure is simple, easy to protect, and can be used to control the activities of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.

Pneumatic valves are valves that are actuated by compressed air. The compressed air is used to promote the movement of multiple groups of combined pneumatic pistons in the actuator, and the characteristics of the force transmission to the beam and the inner curve track are used to drive the hollow core spindle to rotate, and the compressed air disc is transported to each cylinder, and the inlet and outlet positions are changed to change the rotation direction of the spindle, and the number of cylinder combinations can be adjusted according to the requirements of the rotation torque required by the load (valve) to drive the load (valve) operation. Pneumatic valves can be used to control the movement of various types of fluids such as air, water, steam, various corrosive media, slurries, oils, liquid metals and radioactive media.

1. Pneumatic valve has good effect on gaseous medium and small diameter liquid, low cost and convenient protection. Defects: Affected by the fluctuation of air compressor pressure, it is easy to be affected by the water content of air compressor gas in the northern winter, resulting in the transmission part freezing and not moving. Generally, pneumatics are faster than electric, and electric ones are dual-purpose flashlights. The price of pneumatic and gas dual-use is relatively high.

2. The electric valve has a good effect on liquid medium and large pipe diameter gas, and is not affected by climate. It is not affected by the pressure of air compressor. Defects: high cost, poor in humid environment.

3. The electric valve is slow, and there are not many brands that can achieve explosion-proof electric valves; The pneumatic valve moves quickly, and the explosion-proof price is relatively higher than that of the electric bottom (depending on what accessories the pneumatic valve is equipped with, and the accessories with large brands will be more expensive than ordinary electric valves).

4. The electric valve is used in some places with large pipe diameter, because it is difficult to do pneumatic, but the stability of the electric valve is not as good as that of pneumatic, the switching speed is slow, and the actuator is prone to jamming for a long time. Pneumatic valves open and close quickly and accurately, but require a stable air supply.