Pump core of independent external spring pump

Abstract

The invention discloses a pump core of an independent external spring pump. The pump core comprises a main column, an auxiliary column, a piston, a pump chamber, a spring and a glass bead; the main column is arranged in the pump chamber; the auxiliary column is connected to the lower end of the main column; the the piston is arranged on the outside of the main column and the auxiliary column in asleeved mode; a lock cover capable of fixing the main column to the pump chamber is fixed on the pump chamber; and a cover flange turned outwards is arranged at the upper end of the lock cover; the upper end of the pump chamber is fixed to the inner side of the cover flange in an inserted mode; the lock cover is provided with a locking opening protruding upwards above the cover flange; the upper end of the main column is provided with a locking flange which is turned outwards and arranged on the outer side of the locking opening in a sleeved mode for locking, and the outer diameter of the locking flange is smaller than that of the cover flange; an annular baffle capable of blocking the lower portion of a top plate of a bottle locking cap from the lower portion is arranged on the upper portion of the pump chamber; a gap for containing the top plate of the bottle locking cap is arranged between the baffle and the bottom face of the lower end of the cover flange; and an inserting head used for being fixedly connected with a pressing head in an inserted and sealed mode is arranged on the inner side of the upper end of the main column. The pump core of the independent external spring pump provided by the invention has the characteristics of being independent in storage and transportation, can be matched with different pressing heads and bottle locking caps, and is flexible in use.

Description

【Technical field】 [0001] The invention relates to an independent external spring pump core. 【Background technique】 [0002] Food safety is getting more and more attention. After the general food pump starts to be used, its outlet is always open, and the inside of the pump communicates with the outside through the outlet. Due to the attraction of food, it is easy to attract mosquitoes and other insects to enter and pollute the material body, and Dust and impurities in the air will also pollute the material body. [0003] In addition, most of the existing food pumps adopt the structural design of the built-in spring, and the metal spring directly contacts the material body, which is easy to corrode the metal spring and is not environmentally friendly. Moreover, food pumps generally have an integral structure, that is, the pump core, lock bottle cap and press head are assembled and fixed. During assembly, the lock bottle cap is fixed on the pump core through the outer lock cap...

AI Technical Summary

Problems solved by technology

[0002] Food safety is getting more and more attention. After the general food pump starts to be used, its outlet is always open, and the inside of the pump communicates with the outside through the outlet. Due to the attraction of food, it is easy to attract mosquitoes and other insects to enter and pollute the material body, and Dust and impurities in the air will also pollute the material body

[0003] In addition, most of the existing food pumps adopt the structural design of built-in springs. The metal springs directly contact the material body, which is easy to corrode the metal springs, which is not environmentally friendly.

Moreover, food pumps generally have an integral structure, that is, the pump core, lock bottle cap and press head are assembled and fixed. During assembly, the lock bottle cap is fixed on the pump core through the outer lock cap, inner lock cap, etc., which is not flexible enough to use.

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