Foam soap dispenser capable of adjusting the amount of air

Abstract

A foam soap dispenser capable of adjusting the amount of air includes a pump, piston rod, a valve seat sheathed on the piston rod, a feed pipe coupled to the pump, a feed check valve for feeding a foam soap and a discharge check valve installed in the pump, an air-liquid mixing chamber formed between the feed check valve and the discharge check valve, an air-intake pipe communicated with an air-liquid mixing chamber, and an air-intake hole formed on the air-intake pipe that connects the air-liquid mixing chamber. The air-intake pipe includes an air-intake check valve, a screw sleeve and an air adjusting screw rod. The screw sleeve is fixed to the air-intake pipe, and the air adjusting screw rod is fixed into the screw sleeve and passed through a through hole of the screw rod of the check valve to insert the screw rod into the air-intake hole.

What is claimed is: 
     
         1 . A foam soap dispenser capable of adjusting the amount of air, comprising a pump, a piston rod, a valve seat sheathed on the top of piston rod, a feed pipe coupled to the bottom of the pump, a feed check valve for feeding a foam soap in a single direction and a discharge check valve installed in the pump, and a restoring spring installed and acted between the feed check valve and the discharge check valve, and the discharge check valve dividing the pump into a discharge chamber and an air-liquid mixing chamber, and the air-liquid mixing chamber being formed between the feed check valve and the discharge check valve, characterized in that a sidewall of the air-liquid mixing chamber is communicated with an air-intake pipe, and an air-intake hole is formed on the sidewall of the air-intake pipe that connects the air-liquid mixing chamber, and the air-intake pipe includes an air-intake check valve, a screw sleeve and an air adjusting screw rod sequentially installed from the inside to the outside along the radial direction of the air-intake hole, and the screw sleeve and the air-intake pipe are fixed and coupled to each other, and the screw sleeve has a flange abutting at a base of the air-intake check valve, and a through hole of the screw rod is formed at the bottom of the air-intake check valve, and the air adjusting screw rod is fixed into screw sleeve and passed through the through hole of the screw rod of the check valve, so that an end of the screw rod can be inserted into the air-intake hole. 
     
     
         2 . The foam soap dispenser capable of adjusting the amount of air according to  claim 1 , wherein the discharge check valve includes a first rubber base and a first blocking edge surrounding the periphery of the first rubber base and having a cross-section substantially being V-shaped opening, and the feed check valve includes a second rubber base and a second blocking edge surrounding the periphery of the second rubber base and having a cross-section substantially being a V-shaped opening, and the V-shaped openings of the first and the second blocking edges are aligned in the same direction. 
     
     
         3 . The foam soap dispenser capable of adjusting the amount of air according to  claim 1 , wherein the air-intake check valve includes a third rubber base and a third blocking edge surrounding the periphery of the rubber base and having a cross-section substantially being a V-shaped opening. 
     
     
         4 . The foam soap dispenser capable of adjusting the amount of air according to  claim 2 , wherein the piston rod has a through hole for delivering the foam soap, and the piston rod includes has radial hole, and the rubber base of the discharge check valve has an protruded embedding portion for sealing the through hole of the piston rod, and the embedding portion seals an end of the through hole, and the discharge chamber is communicated with the through hole through the radial hole. 
     
     
         5 . The foam soap dispenser capable of adjusting the amount of air according to  claim 1 , wherein the base of the screw sleeve has a bump, and an end of the air-intake pipe has a buckle corresponding to the bump, and the screw sleeve is buckled to the end of the air-intake pipe. 
     
     
         6 . The foam soap dispenser capable of adjusting the amount of air according to  claim 1 , wherein the bottom of the air-intake check valve and a through hole of the screw rod have an interference fit. 
     
     
         7 . The foam soap dispenser capable of adjusting the amount of air according to  claim 1 , wherein the screw sleeve includes an inner thread corresponding to the screw rod, and an end of the screw rod proximate to the air-intake hole is in a conical shape. 
     
     
         8 . The foam soap dispenser capable of adjusting the amount of air according to  claim 1 , wherein the valve seat is sheathed on the top of the piston rod, and the piston rod is movably installed in the valve seat, and the piston rod and the valve seat further have a first sealing ring installed therein. 
     
     
         9 . The foam soap dispenser capable of adjusting the amount of air according to  claim 1 , further comprising a second sealing ring installed between the valve seat and the pump.