PRESS HEAD ASSEMBLY

摘要

A spray head assembly includes a press head, a mount, a netted member, an air valve, a first piston, a rod, a main part, a resilient member, a restriction member, a second piston, a vale, a cylinder and an urging member. The press head is connected with the air valve which is connected to the netted member, the first piston and the second piston on one end of the rod and main part. The rod extends through the main part and is located in the cylinder. The valve is engaged with an opening of the cylinder. The mount and the cylinder are connected to each other. Liquid and air are mixed to generate fine foam which is obtain from the press head.

主权项

1. A spray head assembly comprising:
a press head having an outlet; a netted member located in the press head and having a tube, a first net and a second net; an air valve having an air intake and an air passage defined in a first end thereof, a second end of the air valve connected to the netted member and the press head; a first piston being a ring and connected to the air valve, the first piston having a sealing member, a hole and a wall which is movable to seal or open the air intake; a main part being a hollow tube and having an air room and an inclined wall, the sealing member contacting the air room and being movable to close or open the air room, the main part having an end resiliently connected to outside of the air valve; a rod extending through the main part and having a tapered head, a body and a tip end, a neck formed between the body and the tip end, an outgoing path defined between an outside of the tapered head and an inside of the inclined wall, a mixing room defined in the tapered head; a second piston being a ring and connected to the rod and the main part; a cylinder connected with a mount and having an air chamber and a liquid chamber, a restriction member located between the air chamber and the liquid chamber, each of the air chamber and the liquid chamber being an enclosed chamber, the first piston movable back and forth in the air chamber, the second piston movable back and forth in the liquid chamber; a resilient member mounted to an outside of the main part and contacting the restriction member, and a valve located in an opening of the cylinder.