Advantages of electro-hydraulic flat gate: small flow resistance, the flow resistance without shrinkage is similar to that of short pipe. The flat gate valve with diversion hole is installed on the pipeline and can be used for pigging directly. Since the gate is sliding on the two seat surfaces, the flat gate valve liquid can be applied to the medium with suspended particles, and the sealing surface of the flat gate valve is actually automatic positioning. The sealing surface of the valve seat will not be damaged by thermal deformation of the valve body. The valve stem will not be extended even under cold condition. At the same time, when the valve is closed, the flat gate valve without diversion hole does not require high accuracy of the closed position of the gate, so the electric flat valve can use the stroke to control the opening and closing position.
Disadvantages of electro-hydraulic flat gate: when the medium pressure is low, the sealing force of metal sealing surface is insufficient to achieve satisfactory sealing. On the contrary, when the medium pressure is high, if the sealing surface is not lubricated by system medium or foreign medium, the sealing surface may be worn too much if it is opened and closed frequently. (recommended by valve manufacturer: China Guowei Valve Manufacturing Co., Ltd.) another disadvantage is that the valve is sensitive to flow control only when it is at 50% of the valve closing position when it moves horizontally on the circular flow channel. Moreover, when the high-speed and high-density medium flow is broken, the RAM will produce severe vibration. If the valve seat is made into a V-port and closely guided with the gate, it can also be used as throttling.
Electro hydraulic flat gate is widely used in building materials, metallurgy, mining and other industries on the dust material flow control pipeline, is the ideal equipment to control dust material flow.
Features: the electro-hydraulic flat gate has the advantages of simple structure, light weight, flexible operation, convenient installation and disassembly, made of high-quality carbon steel, with high strength, good performance and long service life; the use and maintenance of electro-hydraulic push rod is convenient and fast, which greatly reduces the intensity of human labor.
Working principle: the gate is mainly composed of frame, gate, oil cylinder, power source, etc. through the forward and backward switch and stop switch on the control box, the gate can be controlled to make horizontal reciprocating movement to achieve the purpose of opening and closing the valve.
