Spring loaded down quickly adjustment structure of the pneumatic valve (3)

spring loaded fast closing butterfly pneumatic valve, hydraulic - pneumatic valve is mainly composed of butterfly Spring drive device, hydraulic station and electric cabinet, etc. Open the pneumatic valve, the system issue instructions ( Electric cabinet as remote control, hydraulic station, hydraulic oil into the bottom of the cylinder to push the piston to drive control pneumatic valve open, spring spring is compressed in the cylinder storage at the same time. When there's an emergency work system, adjustment of pneumatic valve will receive signals, in the spring, rapidly shut, closing time for ~ s, so to protect the working system and line equipment. Due to the fast closing butterfly in the working medium of pneumatic valve for high temperature gas, therefore when designing pneumatic valve adjustment, adopted special structure. ( Butterfly plate disc USES three eccentric structure, make the butterfly in the process of the pneumatic valve in the opening and closing, the butterfly plate sealing surface will be in open moment immediately from the pneumatic valve sealing surface, and only in the closing moments, in the process of closing butterfly plate sealing surface will contact and pressure pneumatic valve sealing surface guarantee seal, eliminate the wear and abrasion between the two sealing surface. Oblique cone structure since the positioning function at the same time, ensure the butterfly threatening the neutral. ( Metal - floating seal butterfly plate Graphite intercalation seal adopts floating seal form, when the butterfly pneumatic valve in temperature change, appeared in the process of installing or using floating sealing ring can be made of the micro deformation of pneumatic valve body, make the adjustment of pneumatic valve seal always stay in the best state. ( Shaft end temperature compensation mechanism by the use of pneumatic valve adjusting temperature is higher, considering the thermal effect of pneumatic valve shaft, in order to prevent the pneumatic valve shaft to resist to the normal pneumatic valve can not open, in the upper and lower shaft end temperature compensation mechanism at the same time, through several groups of the same as the saucer reed role support gasket for pneumatic valve shaft size caused by temperature changes automatically adjust, compensate redundant deformation caused by unfavorable factors, thus to guarantee not offset butterfly plate, the shaft end where, the end is not damaged. Quick closing butterfly normal working state of the pneumatic valve ( Electricity is normally open state, only if the system fails ( Power requirements can be quickly shut down. According to this characteristic, drive must have automatic reset function, namely the electric drive make butterfly pneumatic valve opens, power drive automatically reset to close the pneumatic valve adjustment. Automatic reset drive a lot of more phyletic, considering the control of pneumatic valve safety performance is higher, the fork transmission and structure of the reset spring, mainly by the box body, fork, oil cylinder, piston, piston, spring and spring cylinder, etc. Due to the adjustment of pneumatic valve closing time requirements within s fast, considering the use of performance, fork of the pin adopt alloy steel material, the fork contact parts assembly cylindrical roller bearing, the oil cylinder piston force in the rolling way passed to fork, in this way, both reduced the friction, improve the life, and improve the efficiency of the torque. Because use spring action mechanism, made a careful consideration, the safety of the spring screw independent security protection, make once need at the scene of spring to install and remove, no special tools, and ensure the personal safety of operators. To make the spring load and remove the safe and convenient. Keywords:
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