Portable double-sealing rotating cutting valve

Abstract

The invention refers to a valve which is equipped in the pipeline in the fluid transfer piping system. It can adjust and cut off fluid. It is made up of valve handle screw mandrel, transmission mechanism, transmission nut, valve handle, valve handle straight gash, valve handle inclined channel, valve cap, valve body, make and break cell, bottom cap, and so on. The make and break cell is fitted over the valve handle, both of them are equipped in the valve body. The valve handle can do fluctuation luffing motion. The valve cap is equipped in the valve handle or valve body. The bearing and transmission nut which are equipped in the up chamber of the valve cap are screwed into the up part of the valve handle-the valve handle screw mandrel. The transmission mechanism is connected to the valve handle screw mandrel by key. The valve handle have straight gash and inclined channel. The make and break cell have two single lobe seal surface. The valve handle straight gash is connected to the valve handle inclined channel, and they are equipped in the pin. Portable type dual seal unscrew valve which has this structure and the make and break cell, which is a unit of the luffing motion, rotation movement, and dual seal, can improve the performance of the adjusting and cutting off, prolong the useful life, and improve the efficiency.

Description

technical field [0001] The invention relates to a valve installed on a pipeline in a fluid delivery pipeline system to regulate and cut off fluid, and belongs to a double-sealed valve with lifting and rotating movement of an opening and closing member. Background technique [0002] In the fluid conveying pipeline system, the valves used to regulate fluid, flow, pressure and cut off fluid flow are generally lifting gate valves, globe valves and rotary plug valves, ball valves, butterfly valves, gate valves and globe valves. It is a lifting type. From the structural point of view, its lifting stroke is large, the axial dimension of the valve is small, the valve weight is large, the consumables are large, the installation and operation space is also large, and it is inconvenient to use and maintain. The opening and closing parts of the valve are of rotary type. Although the valve has a large axial dimension and occupies a small space, and does not have the above-mentioned short...

AI Technical Summary

Problems solved by technology

[0002] In the fluid conveying pipeline system, the valves used to regulate fluid, flow, pressure and cut off fluid flow are generally lifting gate valves, globe valves and rotary plug valves, ball valves, butterfly valves, gate valves and globe valves. It is a lifting type. From the structural point of view, its lifting stroke is large, the axial dimension of the valve is small, the valve weight is large, the consumables are large, the installation and operation space is also large, and it is inconvenient to use and maintain. The opening and closing parts of the valve are of rotary type. Although the valve has a large axial dimension and occupies a small space, and does not have the above-mentioned shortcomings of gate valves and globe valves, its sealing manufacturing technology requires high requirements, the sealing surface is difficult to harden, and the sealing life is greatly affected by the process. Therefore, the sealing maintenance workload is large during use.

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