Backflow preventive beverage straw

Abstract

An anti-reflux drinking straw is composed of a suction nozzle, a soft valve and a catheter. The suction nozzle is composed of an upper part, a middle part and a lower part. The middle part contains a bracket, the soft valve is movably connected to the bracket, and the lower part of the suction nozzle is closely connected with the catheter. The soft valve is stretched and deformed under the action of suction, and the beverage passes through the passage of the stent to move upward continuously; when the suction disappears, a section of beverage above the soft valve separates the outside air, and a section of beverage above the soft valve plus the beverage in the catheter , moves down under the action of gravity, drives the soft valve to move down, closes the passage of the bracket, and prevents the backflow of the drink. An anti-backflow drinking straw is provided with a soft valve inside, which can only be opened upwards to ensure that the drink is sucked into the mouth, effectively prevents the backflow of the drink, and reduces the pollution to the remaining drinks.

Description

technical field [0001] The invention relates to a drinking straw, in particular to an anti-backflow drinking straw. Background technique [0002] A common drinking straw is an empty tube directly connected up and down. When the sucking action is over, part of the drink will flow back into the drink bottle from the mouth through the straw under the action of gravity, polluting the original clean drink in the bottle; if once If you can't finish drinking, it will seriously affect the second drinking. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages of the prior art, and provide an anti-backflow drinking straw. [0004] In order to achieve the above object, the technical solution of the present invention is: an anti-reflux drinking straw is composed of a suction nozzle, a soft valve and a catheter. The suction nozzle is composed of an upper part, a middle part and a lower part. Connected to the bracket, the lower part o...

AI Technical Summary

Problems solved by technology

[0002] A common drinking straw is an empty tube directly connected up and down. When the sucking action is over, part of the drink will flow back into the drink bottle from the mouth through the straw under the action of gravity, polluting the original clean drink in the bottle; if once If you can't finish drinking, it will seriously affect the second drinking

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