Sealing cavity of a plastic pump conical rotary noodle machine

Abstract

The invention discloses a conical rotating surface mechanical seal cavity of a plastic pump. The conical rotating surface mechanical seal cavity comprises an impeller and a pump cover, wherein a moving ring is arranged on the impeller, and a static ring is arranged on the pump cover; the rotating surface of the impeller is conical; a conical surface is also formed in the pump cover to be matched with the conical rotating surface; and a seal cavity defined by the pump cover and the rotating surface is conical as well, and the part, close to a vertex angle, of the conical rotating surface is the joint part of the moving ring and the static ring. The conical rotating surface mechanical seal cavity has the benefits as follows: under the working condition that solid particle strong acid media exist, the mechanical seal cavity adopts the conical rotating surface, particles can circumferentially spin along the conical inclined surface and leave the seal surfaces of the moving ring and the static ring through transport motion of the conical rotating surface, the mechanical seal use environment is improved, and nearly hundred times of tests prove that the particle spin separation effect is the best when the angle of the conical surface ranges from 20 degrees to 25 degrees, so that the sealing performance is improved, the service life of the mechanical seal cavity is prolonged, and the life is 20 times longer than that of a conventional externally-mounted mechanical seal cavity.

Description

Technical field [0001] The invention relates to a machine-sealed cavity, more specifically, it relates to a machine-sealed cavity of a plastic pump cone-shaped rotating surface. Background technique [0002] The rotating surface of the impeller of the prior art plastic pump is flat. Under the working condition of the strong acid medium containing solid particles, the vortex effect of the rotation will cause the particles to be sucked into the pump body, which affects the sealing performance and life of the plastic pump. Summary of the invention [0003] The purpose of the present invention is to overcome the shortcomings in the prior art and provide a plastic pump cone-shaped rotating surface mechanical seal cavity with reasonable structure, good sealing performance and improving the use environment of the mechanical seal. [0004] The purpose of the present invention is achieved through the following technical solutions: the plastic pump cone-shaped rotating surface mechanical seal...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the rotating surface of the impeller of the plastic pump is flat. Under the working condition of strong acid medium containing solid particles, the rotating vortex will cause the particles to be sucked into the pump body, which will affect the sealing and life of the plastic pump.

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