Patent ID: 11896986
Assignee: POSITEC TECHNOLOGY CHINA CO. LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A nozzle device applied to a high-pressure cleaning machine, comprising:
a nozzle, comprising a nozzle casing, wherein a water outlet channel is provided in the nozzle casing, and a front end of the nozzle casing is provided with at least one liquid discharge port connecting with the water outlet channel, wherein
the nozzle device further comprises an exhaust valve connected to the nozzle casing, and the exhaust valve comprises:
a valve seat, provided with a valve cavity capable of connecting with the water outlet channel; and
a valve core, arranged in the valve cavity and movable relative to the valve cavity; wherein
the valve seat is provided with an air inlet hole and an air outlet hole, the air inlet hole connects with the water outlet channel and the valve cavity, the air outlet hole connects with the valve cavity, and the air inlet hole, the valve cavity, and the air outlet hole together form a main exhaust passage connecting with external air and the water outlet channel; the nozzle device further comprises an exhaust port capable of discharging gas that enters the main exhaust passage to the outside; and the valve core is movable relative to the valve cavity to a closed position for blocking the main exhaust passage and an open position for opening the main exhaust passage.