Inlet/outlet unit of high-strength and corrosion-resistant pump formed by two materials through die pressing

Abstract

The invention discloses an inlet / outlet unit of a high-strength and corrosion-resistant pump formed by two materials through die pressing. An orifice of the pump is made of plastic and is an inlet and / or an outlet, an annular groove is formed in the outer side of the orifice, a metal flange is arranged in the annular groove, part of the metal flange is located in the annular groove, and the otherpart of the metal flange is located outside the annular groove, a plurality of flange holes are formed in the area located outside the annular groove, and the metal flange and the orifice are formed by die pressing. The inlet / outlet unit can not only meet the corrosion-resistant requirement, but also can meet the strength requirement, is formed by die pressing once and has high formation efficiency.

Description

technical field [0001] The invention relates to the field of pumps, in particular to an inlet and outlet of a high-strength corrosion-resistant pump molded from two materials. Background technique [0002] Traditional water pump housings are made of metal. The advantages of metal materials are high strength and not easy to deform, but the disadvantages are that on the one hand, they are not resistant to corrosion, on the other hand, the manufacturing process of the shell is complicated, the molding efficiency is low, and the raw materials are expensive. [0003] In response to the shortcomings of traditional water pumps, plastic water pump casings have appeared on the market. Compared with metal water pump casings, the molding process is simple and the production efficiency is high. However, it was found during use that the water inlet and outlet of the pump casing The pressure is high, and it is prone to deformation and cracking, which affects the service life of the pump c...

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Problems solved by technology

[0002] Traditional water pump casings are made of metal. The advantages of metal materials are high strength and not easy to deform, but the disadvantages are that on the one hand, they are not resistant to corrosion, on the other hand, the manufacturing process of the casing is complicated, the molding efficiency is low, and the raw materials are expensive.

[0003] In response to the shortcomings of traditional water pumps, plastic water pump casings have appeared on the market. Compared with metal water pump casings, the molding process is simple and the production efficiency is high. However, during use, it was found that the water inlet and outlet of the pump casing The pressure is high, and it is prone to deformation, cracking, etc., which affects the service life of the pump casing. Later, some metal parts are added to the water inlet and outlet to strengthen it, but this kind of strengthening method is more troublesome to assemble.

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