A plastic pump shaft and its manufacturing method

Abstract

The invention provides a manufacturing method of a pump shaft of a plastic pump, and belongs to the technical field of water pumps. The technical problems that an existing plastic pump shaft is proneto breakage, not resistant to abrasion and the like are solved. The manufacturing method of the pump shaft of the plastic pump is characterized by comprising the following steps that a, a raw materialis purchased, specifically, ceramic rings are purchased; b, a protective shell part is manufactured, a left protective shell and a right protective shell are integrally formed through an injection molding machine; c, a main shaft is manufactured, the main shaft is turned through a lathe; d, combined installation is conducted, specifically, the ceramic ring, the left protective shell, the right protective shell and the main shaft are placed on a pump shaft assembling machine, glue is sprayed to the main shaft firstly, then the left protective shell and the right protective shell are fixedly arranged on the main shaft, and then the ceramic rings are fixedly arranged on the left protective shell and the right protective shell correspondingly; e, screening and packaging are carried out, specifically, after screening, defective products are removed and recovered, and finished products are packaged and put in storage. The method has the advantage that the anti-fracture and high-temperature-resistant pump shaft can be rapidly assembled.

Description

Technical field [0001] The invention belongs to the technical field of water pumps, in particular to a plastic pump shaft and a manufacturing method thereof. Background technique [0002] Pump problems caused by cavitation: The main reasons for pump cavitation are the large resistance of the pump inlet pipe, the more gas phase of the conveying medium, the insufficient filling of the pump, and the insufficient energy head of the pump inlet. Cavitation is the most harmful to the pump. When cavitation occurs, the pump vibrates violently and the balance is severely damaged, which will cause damage to the plastic pump bearings and pump shaft. [0003] The current plastic pump shaft material uses silicon carbide or ceramics. These two materials are easy to break under improper operation or when the pump shaft is locked, the pump shaft and the motor are not concentric, idling, or dry. It is necessary for workers in the technical field to design a wear-resistant and fracture-resistant pum...

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Problems solved by technology

[0002] Problems caused by pump cavitation: The main reasons for pump cavitation are large pump inlet pipe resistance, more gas phase of the conveying medium, insufficient filling of the pump, and insufficient energy head at the pump inlet, etc.

Cavitation is the most harmful to the pump. When cavitation occurs, the pump vibrates violently and the balance is seriously damaged, which will cause damage to the plastic pump bearing and pump shaft.

[0003] The material of the current plastic pump shaft is silicon carbide or ceramics. These two materials are easy to break in the case of improper operation or when the pump shaft is locked, the pump shaft and the motor are not concentric, idling, dry beating, etc. For this For those working in the technical field, it is necessary to design a wear-resistant and fracture-resistant pump shaft

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