Spring loaded fast closing butterfly valve is mainly composed of butterfly valve, hydraulic - Spring drive device, hydraulic station and electric cabinet, etc. Open the valve, the system issue instructions ( Electric cabinet as remote control) , hydraulic station, hydraulic oil into the bottom of the cylinder forces the pistons to drive the butterfly Industrial Valves open, spring spring is compressed in the cylinder storage at the same time. When the emergency work system, signal butterfly valve will receive accident, in the spring, rapidly shut, closing time is 013 ~ 015 s, so to protect the working system and line equipment. Due to the working medium of quick closing butterfly valve for high temperature gas, thus when a butterfly valve is designed, adopted special structure. ( 1) Butterfly plate disc USES three eccentric structure, make the butterfly valve in the process of opening and closing, the sealing surface of disc will open in the instant immediately from the valve sealing surface, and only in the closing moments, in the process of closing butterfly plate sealing surface will contact and pressure 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. ( 2) Metal - floating seal butterfly plate Graphite intercalation seal adopts floating seal form, when the butterfly valve temperature change, appeared in the process of installing or using floating sealing ring can be made of the micro deformation of the body, make the butterfly valve sealing always stay in the best state. ( 3) Shaft end temperature compensation mechanism due to the use of butterfly valve at higher temperature, the thermal effect of considering the valve spindle, to prevent the Industrial Valves spindle to resist to the normal valve cannot open, at the same time in the upper and lower shaft end temperature compensation mechanism, through several groups of the same as the saucer reed role support gasket valve shaft size caused by temperature change for automatic adjustment, to compensate the redundant deformation caused by the adverse factors, thus to guarantee not offset butterfly plate, the shaft end where, the end is not damaged. The normal work of the fast closing butterfly valve state ( Current state) For normally open state, only if the system fails ( De-energized) To request to quickly shut down. According to this characteristic, drive must have automatic reset function, namely electric drive the butterfly valve opens, power drive automatically reset to close the butterfly valve. Automatic reset has a variety of driving gear, considering the high security performance requirements, butterfly valve adopts the structure of the fork transmission and spring reset, mainly by the box body, fork, oil cylinder, piston, piston, spring and spring cylinder, etc. Because of the butterfly valve fast closing time requirements in the 015 s, considering the use of performance, fork of 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.
resilient gate valve resilient wedge gate valve processes have been widely used to produce cast iron gate valve such as os & y valve fire protection, cast iron valve, and y gate valve etc.
Shenzhen Mech Valve Trading Co., Ltd. will be familiar with the transformation from a generalist into a manufacturer, and will have the big-picture perspective necessary to stay focused on long-term goals.
With the market analysts, exports from Shenzhen Mech Valve Trading Co., Ltd. facilities in China will surpass the forecast.
Mech is designed to enhance your savings in terms of cost, energy and efforts.If you are interested in our double flanged gate valve resilient seated valve products, please contact us soon.
Shenzhen Mech Valve Trading Co., Ltd. sells os&y gate valve and yet their focus on operational excellence and mastery of distributed manufacturing facilities resilient seal gate valve has made them the dominant player in the space.