Zhejiang swinging rod crank shallow of pneumatic diaphragm regulating pneumatic valve manufacturer to cut off the pneumatic valve

blast furnace hot blast stove system, various kinds of regulating pneumatic valve, pneumatic valve, in addition to the hot air flow back damping down pneumatic valve and part of the blast furnace combustion pneumatic valve adopts pneumatic valve, water gate in the rest of the large such as the cold wind, low temperature cut-off pneumatic valve pneumatic valve, pneumatic valve, the combustion air to cut off the gas cut off pneumatic valve and flue gas valve and so on, generally adopts the traditional product wedge type gate pneumatic valve, pneumatic valve disc sealing effect is good, service life is long, but the disadvantage is that heavy structure, installation space is large, high cost. Later appeared to cut off the control pneumatic valve, small volume, light weight, but not ideal sealing performance and service life. Century s, appeared on the market a crank to cut off the pneumatic valve, pneumatic valve has a gate structure and sealing performance of the upper does not need to set the transmission frame, the transmission, but the pneumatic valve within the transmission structure has a fatal flaw, ram through the crank slide block structure, moving along the rail line down influenced by temperature, open moment easily jammed, affect the normal smelting operation. To this end, the development of a small volume, light weight, good seal performance, use and reliable to cut off the pneumatic valve is very necessary.
in order to solve the blast furnace ironmaking system cut off the technical problems of pneumatic valves, after years of exploration, successfully developed a suitable for China's national conditions of new type of swinging rod crank to cut off the pneumatic valve, through industrial test, obtained the good use effect.
the crank to cut off the pneumatic valve including pneumatic valve, pneumatic valve cover, ram and driving devices. Gate opening and closing of the crank rocker mechanism transmission, crank rocker mechanism, crank shaft, including a crank lever and the promotion of the swinging rod of ram. Crank, leverage with the crank shaft fixed connection, levers and swinging rod hinged connection at one end, swinging rod at the other end connected to the gate hinge axis. The above two hinged, all have self-lubricating bushing. Drive device installed in the pneumatic valve cover, by driving device driving crank rocker mechanism. Drive can use electric, hydraulic, pneumatic device, or manual.
drive device, drive the crank and leverage crankshaft swinging around, drive and leverage a hinge pendulum swing rod and ascend, pull up and swing gate swinging rod hinged connection and promoted, pneumatic valve opens; Drive the return trip, pneumatic valve shut off. The pendulum rod crank is to cut off the pneumatic valve, the structure of small size, light weight, ram in relatively pneumatic valve pneumatic valve opening and closing moments have certain rotating movable process, avoid the original wedge gate is jammed, the phenomena of pneumatic valve switch is reliable, can be a long time to ensure that the sealing surface sealing performance.
pneumatic valve plate of the lifting device is a crank rocker mechanism. Crank rocker mechanism, crank shaft, including a crank lever and the swinging rod, crank, leverage with the crank shaft using key fixed connection, levers and swinging rod hinged connection at one end, swinging rod at the other end connected to the gate hinge axis. The above two hinged, all have self-lubricating bushing. Drive device installed in the pneumatic valve cover. In setting for rotating movable gate on both sides of the guide block, pneumatic valve set on slipway, guide block and the ways to cooperate. Crank to cut off the pneumatic valve hydraulic driving device drives the crank and leverage, which drives the swinging rod swing and ascend, then drives the gate swings and promoted, realize the gate opening action; Hydraulic drive return, gate was shut, pipeline medium was cut off.