Efficient multifunctional rotor type submersible sewage pump

Abstract

The invention discloses an efficient multifunctional rotor type submersible sewage pump and belongs to positive displacement pumps. Sewage delivery is conducted through the theory of a radial piston pump. When a submersible motor drives a rotor to rotate, plungers on the rotor move in a reciprocating mode in the radial direction under the control of an eccentric stator; when the plungers move outwards, media are sucked from a suction port in a pump body through a central channel and radial holes in the pump body; when the plungers move inwards, the media are discharged towards a discharging port through the central channel and the radial holes. Due to the fact that the multiple plungers which are distributed uniformly convey the media uninterruptedly, liquid flows are quite stable, consistent and free of pulses; baffle tongues on a baffle tongue sleeve prevents the leakage from a high-pressure area to a low-temperature area inside the pump body; meanwhile, the baffle tongues and the radial holes in the rotor form cutting pairs, long fibers are cut automatically and continuously, and winding is eliminated. The pump is high in self-section function, and gas-liquid-solid mixed transportation can be conducted. Furthermore, the pump has a bidirectional operation function, liquid can be conveyed when the pump rotates in the positive direction, and the pump can wash a filter screen and eliminate blockage without stopping a machine when rotating in the negative direction.

Description

technical field [0001] The invention relates to a displacement pump, a high-efficiency multifunctional rotor-type submersible sewage pump capable of working underwater. Background technique [0002] With the rapid development of municipal construction and environmental protection, the application of sewage pumps is becoming more and more extensive, whether it is the sewage discharge system of factories, residences, hospitals, construction sites, or subways, underground engineering, civil air defense systems, municipal engineering, and construction sites. Use a sump pump. [0003] At present, the widely used sewage pumps mainly include centrifugal type and swirl type. In order to achieve the purpose of sewage discharge, various impellers are used, such as single-channel type, double-channel type, double-blade type, and three-blade type. , swirl type, etc. Among them, single-channel and double-channel impellers are more commonly used, but their anti-clogging and anti-winding ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two kinds of sewage pumps widely used: centrifugal type and swirl type. In order to achieve the purpose of sewage discharge, various impellers are used, such as single-channel type, double-channel type, double-blade type, and three-blade type. , swirl type, etc. Among them, single-channel and double-channel impellers are more commonly used, but their anti-clogging and anti-winding performances are still not ideal, especially due to the formation of blockage after long fibers are entangled, and the medium cannot be transported. Shut down for cleaning, and in serious cases, the motor will burn out, affecting the normal operation of the pump

For this reason, many units have taken various measures to improve in order to prevent clogging and anti-winding; as the application number 200510037755.X, the name is "vertical crushable self-priming sewage pump"; Submersible sewage pump for tearing long fiber sundries"; application number 200710057833.1, titled: "a shredded sewage pump"; application number 200910102094.2, titled "submersible cutting sewage pump inlet structure" and other patent applications have been filed A variety of shearing or crushing devices have been installed; however, these devices can only reduce winding, but cannot eliminate winding; another kind of winding is the winding of the filter screen. Due to the harsh working conditions, the filter screen is often blocked by debris, and the pump cannot be sucked. It must be shut down and cleaned; this kind of cleaning is also a very troublesome thing. It is labor-consuming and time-consuming to lift the pump out of the water or to clean it with personnel.

[0004] It can be seen that the shortcomings of centrifugal sewage pumps are also obvious. First, the performance of anti-clogging and anti-winding is not ideal; Conveying impurities containing gas and pollutants with high concentration; Fourth, the filter screen is easy to block, and the pump cannot operate normally

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