Sewage treatment double-impeller reflux pump based on CRI system

Abstract

The invention discloses a sewage treatment double-impeller reflux pump based on a CRI system, and relates to the technical field of reflux pumps. The sewage treatment double-impeller reflux pump comprises a pump pipe, a pump core is mounted in the pump pipe, and a motor is mounted at the top of the pump pipe. The pump core comprises a gear box, a gear shaft assembly, a first impeller and a second impeller. The gear box is used for mounting the gear shaft assembly. The gear shaft assembly is used for enabling the motor to drive the gear shaft assembly to rotate so as to drive the first impeller and the second impeller to rotate so that the first impeller and the second impeller can convey media. A protection device is installed on the portion, close to the upper portion of the pump core, of the pump pipe and comprises a sealing cover, and a stainless steel pipe is installed at the top of the sealing cover. Through the double-impeller pump core structure, electric energy is saved, pump core loss is reduced, and the backflow efficiency is improved. The motor is protected through the protection device, a backflow pump is convenient to maintain, the fault rate is reduced, and the service life of sewage treatment equipment is prolonged.

Description

technical field [0001] The invention belongs to the technical field of backflow pumps, in particular to a double-impeller backflow pump for sewage treatment based on a CRI system. Background technique [0002] In the sewage treatment process, the reflux pump is used to return the mixed solution of the O pool to the A pool, so as to realize the denitrification of the nitrate nitrogen in the O pool to the A pool, and convert the nitrate nitrogen into nitrogen gas, thereby realizing denitrification , at present, the return pump used for sewage treatment conveys the medium through a single impeller, but the existing single impeller return pump still has deficiencies in use, the eddy energy in the wake of the impeller of the single impeller return pump cannot be utilized, and the pump The body motor is easy to rust when it is under water, and it is difficult to disassemble it for later maintenance. Contents of the invention [0003] In view of this, the object of the present i...

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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a dual-impeller return pump for sewage treatment based on the CRI system to effectively solve the problem that the single-impeller return pump proposed in the background technology cannot save energy, and the motor of the pump body is easy to rust when it is located underwater

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