Flat metal seal butterfly valve pneumatic Characteristics

In recent years, the use of butterfly of modern industrial development, extended from the low-pressure water to a temperature higher than 538 ℃, -184 ℃ low to medium pressure from low to high , widely used in air separation , chemical industry, metallurgy, sewage treatment and other fields. And caliber growing, higher performance requirements , require a longer service life .
Currently, the majority of domestic and foreign production of rubber sealing butterfly valve and plastic seals, easy to wear and aging , reach equipment for continuous operation cycles. In air separation , for example, today in cryogenic separation principle -based air separation plant , which processes are using molecular sieve pre-purification processes, working pressure of 0.5 ~ 0.9mpa, medium temperature range of 10 ~ 200 ℃, its switching valve used temperature, caliber , frequent switching valve rubber seals easy to wear and aging, but also more difficult to replace .
For these situations , developed a metal rod by force plane sealing pneumatic valve series. The new valve has been the national utility model patent ( patent number : zl97224037.3).
1, the metal flat sealing pneumatic valve characteristics
( 1 ) The lever hoist structure, so that the relative sliding between the sealing small decreases relative wear .
( 2 ) using the rod actuator force increasing mechanism . The butterfly valve is in the closed state agencies ,security ties the drive unit can output maximum torque , and has a self-locking performance , safe and reliable .
( 3 ) use of flat metal seal structure, with strong corrosion resistance and wear resistance, suitable for high temperature environments , long service life .
( 4 ) key components has been optimized so that the total of the valve opening and closing times can reach 1 × 106 times.
( 5 ) of the valve control system uses non-contact magnetic reed switch , from environmental conditions, and the signal sensitivity , high accuracy, can achieve remote control , pneumatic control and automatic control , and ancillary equipment can also be achieved without person operation.