Accelerograph control system of high-pressure cleaning machine

Abstract

The invention discloses a throttle control system for a hi-pressure cleaner. The hi-pressure pump of the system is driven by an engine, the outlet of the hi-pressure pump is connected with the inlet of an overflow downloading valve through a high-pressure pipe; the hi-pressure pipe and the hi-pressure pump are connected by an unloading pipe; the outlet of the overflow unloading valve is connected with a spray gun through a fluid-out pipeline; another outlet of the hi-pressure pump is provided with a throttle control valve, which is connected with the throttle of an engine through a steel wire. When the spray gun is off, the outlet pressure of the pump unloads rapidly, meanwhile the throttle is adjusted so that the engine speed rapidly drops to idle speed; when the spray gun is on, the outlet pressure of the pump increases rapidly to operation pressure, meanwhile the engine speed rises to hi-speed state. And when an operator adjusts the cleaning pressure, the throttle of the engine can be automatically adjusted to a position corresponding to the cleaning pressure.

Description

technical field [0001] The invention relates to a cleaning device, in particular to a throttle control system of a high-pressure cleaning machine. Background technique [0002] During the cleaning process, no matter whether the spray gun is turned on or not, the engine is always running at high speed, and the pump outlet is always kept at high pressure, which not only wastes energy, but also greatly reduces the service life of the pump because the pressure at the pump outlet cannot be unloaded. Therefore, it is necessary to develop a high-pressure cleaner throttle control system, so that the high-pressure cleaner can automatically adjust the speed of the engine and the pump outlet pressure according to the work needs. [0003] The US patent discloses a throttle control system for a high-pressure washer (patent No. 5,174,723), the schematic diagrams of which are shown in FIGS. 3 and 4 . The high-pressure pump 30 is driven by an engine 31 , and the water inlet of the high-pre...

AI Technical Summary

Problems solved by technology

Solve the problems in the background technology that the cost is high, the equipment is relatively complicated, and the design of the throttle control valve only considers the minimum and maximum states of the engine throttle.

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