High Speed Robot,Injection Moulding Machine Robot,High Speed Automatic Power Robot,Servo System Robot Zhejiang Golden Eagle Plastic Machinery Co.,Ltd , https://www.goldeneagle-machinery.com
Stainless steel butterfly valve structure can be divided according to the bias plate, vertical plate, inclined plate and lever. According to the sealing form can be divided into more sealed and hard seal two. Rubber seals are generally used rubber ring seal, hard seal is usually used metal ring seal. According to the connection type can be divided into flange connection and the clamp connection; According to the transmission can be divided into manual, gear transmission, pneumatic, hydraulic and electric several. Stainless steel butterfly valve structure: Stainless steel butterfly valve spring with the plate on the adjustment screw assembly structure. This structure effectively compensates for the tolerance band between the sleeve and the valve body and the elastic deformation of the valve stem under the medium pressure and solves the sealing problem existing in the process of transporting the valve in the bidirectional interchangeable medium. The soft T-shaped multi-layer stainless steel sheet on both sides of the seal ring, with the advantages of both metal seal and soft seal, both in low temperature and high temperature conditions, have zero leakage of sealing performance. Experiments show that pool positive flow state (medium flow direction and disk rotation in the same direction), the sealing surface pressure is the torque of the actuator and the medium pressure on the role of the valve plate. Positive media pressure increases when the valve plate oblique cone surface and seat sealing surface squeeze the more tight, the better the sealing effect. In counter-current conditions, the seal between the valve plate and the valve seat presses the valve plate against the valve seat due to the moment of the drive. As the pressure of the reverse medium increases, the positive pressure between the valve plate and the valve seat is less than the pressure of the medium. The deformation stored by the spring of the adjusting ring after the load is absorbed can compensate for the tight pressure on the sealing surface of the valve plate and the valve seat Play a role in automatic compensation. Therefore, unlike the prior art, the utility model has the advantages that the soft and hard multi-layer sealing ring is mounted on the valve plate and is directly mounted on the valve body, and an adjusting ring is provided between the pressing plate and the valve seat which is a perfect bidirectional hard sealing method . It will replace the gate valve, globe valve and ball valve of this type should generally be installed horizontally in the pipeline. Butterfly butterfly valve installed in the pipe diameter direction. In the butterfly valve body cylindrical channel, the disc-shaped disc rotates about the axis, the rotation angle is between 0 ° -90 °, when rotated to 90 °, the valve is fully open state card. The advantages and disadvantages of stainless steel butterfly valve 1, the advantages of stainless steel butterfly valve 1, opening and closing fast and easy, labor-saving, fluid resistance, you can often operate. 2, simple structure, small size, light weight. 3, you can transport the mud, the liquid accumulated in the pipe port at least. 4, under low pressure, can achieve a good seal. 5, adjust the performance. 2, the shortcomings of stainless steel butterfly valve 1, the use of pressure and small operating temperature range. 2, poor sealing. Butterfly valve structure is simple, small size, light weight, only a few components. And just turn 90 ° to quickly open and close, easy to operate, while the valve has good fluid control features. When the butterfly valve is fully open, the thickness of the disc is the only resistance of the medium flowing through the valve body. Therefore, the pressure drop generated by the valve is small and the filter has better flow control characteristics. Butterfly valve seal and metal seal two types of seal. Flexible sealing valves, seals can be embedded in the body or attached to the butterfly plate around. Valves with metal seals generally have a longer life than elastomeric valves, but are harder to seal completely. Metal seals can adapt to higher operating temperatures, while flexible seals have temperature-limited defects. If the butterfly valve is required to be used as a flow control, the main choice is the correct size and type of valve. The structural principle of the butterfly valve is especially suitable for making large diameter valves. Butterfly valve not only in the oil, gas, chemicals, water treatment and other general industry has been widely used, but also used in thermal power station cooling water system. Commonly used butterfly valve clamp butterfly valve and flange two. The butterfly valve on the folder is to use double-headed bolts to connect the valve between the two pipe flanges, flanged butterfly valve is equipped with a flange on the valve, with bolts on both sides of the valve flange connected to the pipe flange. If the valve is in a state of large throttling, the back of the valve plate is prone to cavitation, the possibility of damage to the valve, are generally used at 15 °. At the opening of the butterfly valve, the shape of the opening formed by the oxygen valve body and the front end of the butterfly plate takes the valve shaft as the center, and the two sides form a different state. The front end of the butterfly plate on one side moves along the flowing direction of the flowing water, Direction and therefore, one side of the valve body and the valve plate is formed like a nozzle-shaped opening, the other side is similar to the throttle-shaped opening, the nozzle side than the throttling side of the flow rate much faster, while the throttling side of the valve will produce negative pressure , There will often be a rubber seal off. Butterfly valve operating torque, the shelf due to the opening and the valve opening and closing direction of different values, horizontal gate valve, especially the large diameter valve, due to the depth of the valve shaft, the head of the difference between the torque can not be ignored. In addition, the valve inlet side of the device elbow, the formation of bias current, the torque will increase. Valve in the middle of the opening, due to the role of water flow torque, the operating mechanism needs self-locking.