Stainless steel piston pump for filling

Abstract

The invention discloses a stainless steel piston pump for filling. The stainless steel piston pump comprises a piston, a rotary valve and a liquid buffer tank, wherein the piston adopts a cylindrical structure, is made of a stainless steel material and reciprocates in a piston cylinder; a liquid to be filled is pumped into a packaging container through a liquid outlet; the piston and the piston cylinder are placed in liquid buffer tank; the rotary valve is provided with an outlet stop block which controls the liquid outlet to close or open and further provided with an inlet stop block which controls a liquid inlet to close or open; and the liquid buffer tank is used for storing the liquid to be filled and provided with a piston cavity which is used for mounting the piston and the piston cylinder and a rotary valve chamber which is used for mounting the rotary valve. According to the stainless steel piston pump for filling, the problems of piston abrasion and food safety during liquid filling are completely solved, the structure is simple, the piston pump is corrosion resistant, the filling accuracy is high, and the filling efficiency is improved greatly.

Description

technical field [0001] The invention relates to the technical field of liquid filling, in particular to a stainless steel piston pump for filling with simple structure and corrosion resistance. Background technique [0002] At present, the liquid filling piston material usually used in the food industry is generally made of rubber. The rubber piston and the cylinder body are interference fit, so that the elastic deformation of the rubber can achieve the effect of sealing the cylinder body and preventing leakage. However, long-term friction between the rubber piston and the cylinder will cause wear on the outer surface of the rubber piston. Such wear will have the following adverse consequences: first, the quantitative accuracy will become worse and worse; second, the worn rubber will enter the liquid Among them, it poses a threat to food safety; third, frequent replacement of rubber pistons will increase production costs; fourth, high-temperature cleaning and sterilization w...

AI Technical Summary

Problems solved by technology

However, long-term friction between the rubber piston and the cylinder will cause wear on the outer surface of the rubber piston. Such wear will have the following adverse consequences: first, the quantitative accuracy will become worse and worse; second, the worn rubber will enter the liquid Among them, it poses a threat to food safety; third, frequent replacement of rubber pistons will increase production costs; fourth, high-temperature cleaning and sterilization will cause permanent plastic deformation of rubber pistons, which will affect the service life of rubber pistons

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