2013年4月23日星期二

Special valves: Material rotary valve Technical Analysis

An advanced technology in various materials in pneumatic conveying systems, material rotary valve is used to quantitatively transfer the material from the silo or feeding device. The nature of the transport of materials, the choice of the rotary valve or rotary valve of powder pellets. Smooth operation of such valves, transmission efficiency, frequency control can be achieved.
Two structural features and technical difficulties
Structural features:
1 rotor and the body and leave the best gap neither the material stuck, but also to ensure the minimum amount of leakage.
The smooth inner surface of the valve body and the rotor surface of the hopper can minimize the retention of the material.
3 rotary valves on both sides of the rotor shaft has a purge port, to ensure the normal operation of the bearing.
4 is equipped with a the rotor monitoring device, easy to realize automatic control.

Technical difficulties:
1 In accordance with the conveying pellets or powder characteristics and specifications of the rotary valve, by virtue of the accumulated experience of practice, reasonably determine the gap between the rotor and the valve body.
2 the inner surface of the valve body and the rotor hopper surface polishing, in particular, is the blind spot at the polishing is very difficult.
The range of application of the three
Material rotary valve for a variety of pellets or powder pneumatic conveying system.

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