High-pressure-resistant external thread stop valve

Abstract

The invention discloses a high-pressure-resistant external thread stop valve. The high-pressure-resistant external thread stop valve comprises a valve body and a first mounting frame, a lower connecting layer is mounted at the upper end of the valve body, an upper connecting layer is mounted at the upper end of the lower connecting layer, a plurality of first locking bolts are arranged at the upper end of the upper connecting layer and rotationally connected with the upper connecting layer, a liquid inlet pipe is connected to the front end of the valve body, the rear end of the valve body is connected with a liquid outlet pipe, the upper end of the valve body is provided with a connecting rod, the upper end of the connecting rod is provided with a rotating wheel, the connecting rod is rotatably connected in the valve body, and the lower end of the valve body is provided with a base; the upper connecting layer and the lower connecting layer are compressed by rotating a third locking bolt, so that a high-pressure-resistant effect is achieved, the condition of water leakage is avoided, and the use is not influenced; and dust penetrates through a leakage net and enters a collecting tank to be collected, the collecting tank is rotated regularly, the collecting tank is opened, the dust inside the collecting tank is cleaned, internal pollution is reduced, and operation is facilitated.

Description

technical field [0001] The invention relates to the field of stop valves, in particular to a high-pressure-resistant external thread stop valve. Background technique [0002] Globe valve, also called cut-off valve, is the most widely used valve. The reason why it is popular is that the friction between the sealing surfaces is small during the opening and closing process, it is relatively durable, the opening height is not large, it is easy to manufacture, and it is easy to maintain. Convenient, not only suitable for medium and low pressure, but also for high pressure. The closing principle of the globe valve is to rely on the pressure of the valve rod to make the sealing surface of the disc and the sealing surface of the valve seat fit closely to prevent the flow of medium. The valve plays an important role in cutting off and throttling the medium in the pipeline where it is located. As an extremely important cut-off valve, the globe valve is sealed by applying torque to th...

AI Technical Summary

Problems solved by technology

[0003] In the current prior art, the connection of the shut-off valve will become loose under high water pressure operation, resulting in water leakage, which affects the use; the long-term use of the valve body in the prior art will accumulate a large amount of dust on the surface, causing pollution , it is inconvenient to work

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