Electro-hydraulic air-lock gate valve

Abstract

The invention relates to an electro-hydraulic air-lock gate valve. The electro-hydraulic air-lock gate valve comprises a main body; an oil cylinder is disposed above the main body; a strip-type cavityis disposed in the main body; an inserting plate is disposed in the cavity and connected with a piston rod of the oil cylinder; through holes are formed in the two sides of the lower portion of the main body; a manhole is formed in one side of the upper portion of the main body; the manhole and one of the through holes are located in the same side of the main body, and the inner diameter of the manhole is larger than that of the through hole; and the area of the inserting plate is larger than that of the through holes. The electro-hydraulic air-lock gate valve is simple in structure, exquisite in design and low in manufacturing cost; convenient and fast replacement of a sealing ring is achieved through the manhole; meanwhile a staggered squeezing assembly is adopted so that the insertingplate can be squeezed, and thus the good sealing property between the inserting plate and the through holes is kept; and meanwhile when the inserting plate seals the through holes, the end of the inserting plate can effectively shovel away impurities which are located on the inner walls of the edges of the through holes, the sealing effect is improved, and the large market application prospects are achieved.

Description

technical field [0001] The invention relates to an electro-hydraulic air-locking plate valve. Background technique [0002] The electro-hydraulic air-locking flapper valve is mainly used in gas pipeline transportation to open or close the transportation channel. [0003] The existing electro-hydraulic air-locking flapper valve is relatively bulky and expensive to manufacture, and it is very troublesome to maintain the wearing part-the sealing ring. The whole shell needs to be disassembled to realize the replacement, the process is complicated, and the labor cost is also very high. High, and, the internal plug-in plate is generally driven by a transmission component, such as a gear combination, so as to achieve sealing. After a long time of use, it is not only inconvenient to clean the internal impurities, but also due to the wear and tear between the components, And cause the phenomenon of air leakage to take place, practicality is not strong. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0003] The existing electro-hydraulic air-locking flapper valve is relatively bulky and expensive to manufacture, and it is very troublesome to maintain the wearing part-the sealing ring. The whole shell needs to be disassembled to realize the replacement, the process is complicated, and the labor cost is also very high. High, and, the internal plug-in plate is generally driven by a transmission component, such as a gear combination, so as to achieve sealing. After a long time of use, it is not only inconvenient to clean the internal impurities, but also due to the wear and tear between the components, And cause the phenomenon of air leakage, the practicability is not strong

Images