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

Claim 11:
12. A handheld high-pressure cleaning machine, comprising a handheld portion, a motor, a water pump driven by the motor, and a nozzle device, wherein the motor and the water pump are both arranged in the handheld portion, the nozzle device is joined to the handheld portion, and the nozzle device comprises:
a main body, wherein a water outlet channel is provided in the main body, and a front end of the main body is provided with at least one liquid discharge port connecting with the water outlet channel; and
an exhaust valve, arranged on a path between a liquid outlet of the water pump and the liquid discharge port of the nozzle, wherein the exhaust valve comprises:
a valve seat, provided with a valve cavity capable of connecting with the water outlet channel; and
a valve core, movably arranged in 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; 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.