Patent ID: 11867318
Assignee: SMC CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC F  B | IPC F

Claim 0:
1. A high-pressure fluid discharge device, comprising:
a body in which a first flow path communicating with an input port and a second flow path communicating with an output port are formed; and a diaphragm valve body configured to operate in conjunction with a valve seat provided in the body to switch between allowing and blocking communication between the first flow path and the second flow path,
wherein a valve chamber joined to the first flow path and a pilot chamber are defined. by the diaphragm valve body, a pilot passage configured to allow communication between the valve chamber and the pilot chamber is provided in the diaphragm valve body, and the high-pressure fluid discharge device comprises a pilot type spool valve configured to switch between allowing and blocking communication between the pilot chamber and a discharge port,
wherein the high-pressure fluid discharge device is configured to supply a pilot pressure from a drive unit of the pilot type spool valve to a first end side of a spool valve body of the pilot type spool valve, and is configured to introduce a pressure fluid in the pilot chamber into a second end side of the spool valve body, and
wherein the pressure fluid in the pilot chamber is introduced into the second end side of the spool valve body via a nap between an outer circumferential surface of the spool valve body and an inner circumferential surface of a valve housing.