Improved anti-backflow high-pressure pipe fitting

Abstract

The invention discloses an improved anti-backflow high-pressure pipe fitting. The improved anti-backflow high-pressure pipe fitting comprises a pipe fitting body. The improved anti-backflow high-pressure pipe fitting is characterized in that a ring-shaped structure is arranged at the input end of the pipe fitting body, a circular arc design is adopted for the side, right facing the input end, of the ring-shaped structure, and the orifice area of the ring-shaped structure is reduced gradually; a baffle is arranged on the side, opposite to the input end, of the ring-shaped structure, and the upper end of the baffle is fixed to the ring-shaped structure through a hinge; and a spring device capable of extending and contracting in the up-down direction is arranged between the baffle and the inner wall of the pipe fitting body, and the non-telescoping length of the spring device is larger than the thickness of the portion, from the hinge to the portion above the hinge, of the inner wall of the pipe fitting body. The improved anti-backflow high-pressure pipe fitting has the beneficial effects that the baffle is arranged through the hinge, the baffle can fall back under the effect of the gravity and the reverse backflow force after the impact force is lost, the baffle is tightly attached to the ring-shaped structure, and fluid backflow is prevented; and the spring device is arranged between the baffle and the inner wall, and when the fluid impact force is lost, the spring force, the baffle deadweight and the backflow force jointly act on the baffle, closing of the baffle is accelerated and the baffle can be closed quickly.

Description

technical field [0001] The invention relates to an improved anti-backflow high-pressure pipe fitting, which belongs to the technical field of pipe fittings. Background technique [0002] High-pressure pipe fittings have very important uses in industry. High-pressure pipe fittings have important functions such as changing the fluid flow direction and connecting pipes, but they cannot automatically prevent the phenomenon of backflow after the fluid loses its flow direction power, and the fluid momentum is large. Even if this phenomenon is overcome , There are certain problems in whether the anti-backflow device can be used smoothly during backflow and whether it can be closed quickly, so it is urgent to overcome these technical defects in today's production. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an improved anti-backflow high-pressure pipe fitting, which can solve...

AI Technical Summary

Problems solved by technology

[0002] High-pressure pipe fittings have very important uses in industry. High-pressure pipe fittings have important functions such as changing the fluid flow direction and connecting pipes, but they cannot automatically prevent the phenomenon of backflow after the fluid loses its flow direction power, and the fluid momentum is large. Even if this phenomenon is overcome , whether the anti-backflow device can be used smoothly during reflow and whether it can be closed quickly has certain problems, so it is urgent to overcome these technical defects in today's production

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