FIELD: instrument engineering.
SUBSTANCE: invention relates to a high-pressure washer with a high-pressure pump. Washing apparatus contains suction cavity (50), at least one downstream discharge cavity (52), pressure cavity (56), downstream of discharge cavity (52), bypass line (92) and valve device (102). Bypass line provides communication of pressure cavity (56) with cavity (50) of the suction. Valve device (102) is arranged to change the flow area of bypass line (92) and is connected to drive device (116). Control device (76) is connected to drive device (116) and pressure sensor (138), which provides the ability to register the pressure of the fluid on the pressure side of cavity (52) discharge. Control device (76) actuates drive device (116) to control the fluid pressure depending on signal from pressure sensor (138) by changing the flow area of overflow line (92).
EFFECT: technical result: increased reliability of the high-pressure washer.
35 cl, 12 dwg
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