Anti-backflow foam pump structure

• Main Authors: SU YAOQUAN, ZHANG GUOJIN
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2019
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

The invention discloses an anti-backflow foam pump structure. The anti-backflow foam pump structure comprises a pressing head, an air cylinder assembly, a liquid cylinder assembly, and a one-way valveassembly; an output channel is formed in the pressing head; the air cylinder assembly comprises an air cylinder and a piston which is arranged in the air cylinder in a sliding mode, and when the pressing head is pressed, the piston can be driven to send the air in the air cylinder into the output channel; the liquid cylinder assembly comprises a liquid cylinder and a main column which is arrangedin the liquid cylinder in a sliding mode, and when the pressing head is pressed, the main column can be driven to move downwards to send the liquid in the liquid cylinder into the output channel; andthe one-way valve assembly is arranged at an input port of the output channel or at the position, close to the input port, of the output channel, a air-liquid mixture in the output channel or the external air is limited to ent