Self-adjusting multiphase pump

Abstract

The invention relates to the technical field of centrifugal pumps, in particular to a self-adjusting multiphase pump suitable for conveying medium with high gas content or high solid content. A pump cover is provided with an annular balance chamber; a shaft passes through the balance chamber on the pump cover and is then arranged in a bearing component housing through bearing components; sealing components are arranged between the shaft and the balance chamber; a gas-liquid separation hole is arranged on an impeller; gas is guided into the balance chamber to be discharged through the gas-liquid separation hole which is with gas-liquid separation and self-venting functions; the rear portion of the impeller is designed with back blades; a balance interface is arranged on the side wall of thebalance chamber; the balance interface is connected with the gas in an inlet tank; and the position between the balance chamber and the shaft is sealed through the sealing components. According to the technical solution, the problem that in the prior art, when the medium with high gas content is transported, the gas is accumulated at the inlet of the impeller so that a vacuum state cannot be formed at the inlet of the impeller and the medium cannot be sucked in, resulting in a flow interruption is solved.

Description

technical field [0001] The invention relates to the technical field of centrifugal pumps, in particular to a self-regulating mixed pump suitable for transporting medium with high gas content or solid content. Background technique [0002] If the impeller of an ordinary centrifugal pump transports a medium with a high gas content, due to the small mass of the gas, the centrifugal force generated is very small, so the gas will accumulate at the impeller inlet. To a certain extent, a vacuum cannot be formed at the impeller inlet, and the medium will The pump cannot be sucked up, resulting in a cut-off phenomenon, and the pump cannot work normally. Especially when it is used as an unloading pump, at the end of unloading, there will often be gas entrained in the liquid phase, and even evacuation occurs. Ordinary centrifugal pumps There will be a lock-up shutdown failure. [0003] When transporting medium with high solid content or poisonous, the service life of the seal is short...

AI Technical Summary

Problems solved by technology

[0005] According to the above proposal, when transporting the medium with high gas content, the existing centrifugal pump has the technical problem of gas accumulation at the impeller inlet due to the small gas centrifugal force, which cannot form a vacuum, and the medium cannot be sucked up and the flow is cut off. Adjustable mixing pump

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