Novel vertical unsealed self-priming pump

Abstract

A new type of vertical sealless self-priming pump consisting of blades and impellers. Due to the rotation of the auxiliary impeller, the liquid in the flow channel forms a liquid ring with a certain thickness. When the pump is running, the centrifugal pressure generated by the liquid ring will be balanced with the pressure of the medium around the auxiliary impeller; the auxiliary impeller adopts a structure of 10 blades. Manufactured as a sealing structure with two-stage auxiliary impellers in series; the original single-stage sealed auxiliary impeller structure was changed, and a two-stage sealed auxiliary impeller series structure was adopted to optimize the sealing performance and reduce the operating power consumption of the auxiliary impeller; the new vertical sealless self-priming pump adopts A high-efficiency hydraulic structure is ensured, and the installation height of the pot shell and the outlet section of the pump body is reasonably selected to ensure its self-priming performance, while reducing the hydraulic loss of the medium from the pot shell to the outlet pipe.

Description

Technical field [0001] The invention relates to a novel vertical non-sealed self-priming pump, which is especially used in petrochemical and other engineering fields. Background technique [0002] Self-priming pump refers to a type of water pump that only needs to add a certain amount of water to the system before starting, and does not need to fill the water inlet pipe with water. As a special centrifugal pump, it has been widely used in important industrial and agricultural fields such as drainage, irrigation, petrochemical, metallurgy, electric power, papermaking, and sewage treatment. Compared with submerged pumps and long-shaft submersible pumps, self-priming pumps have obvious advantages such as stable operation, good safety performance, low cost, long service life, easy maintenance, and low vibration and noise. Reliable transportation and working conditions such as difficult movement. According to the principle of action, the self-priming system can be divided into ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of poor sealing performance and poor reliability of the existing vertical self-priming pumps, the present invention provides a novel vertical non-sealed self-priming pump. The novel vertical non-sealed self-priming pump has good The sealing performance improves the support performance; the sealing pressure head is guaranteed to ensure the sealing performance of the auxiliary impeller

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