Diesel engine speed adjustor of mobile screw compressor

Abstract

The invention provides a diesel engine speed adjustor of a mobile screw compressor. According to the diesel engine speed adjustor, the service life of a product is long, the adjusting mode is easy to realize accurate control of the rotational speed of the diesel engine, and the stability of the rotational speed is strong. The diesel engine speed adjustor comprises a cylinder body, a spring, a piston and a piston rod, wherein the piston is arranged in the cylinder body, and the top of the piston rod is connected with an accelerator handle of a diesel engine. The diesel engine speed adjustor ischaracterized in that: the cylinder body comprises a front cylinder body and a rear cylinder body; the piston comprises a front piston and a rear piston; the front piston and the rear piston are arranged in a cavity formed by connecting the front cylinder body and the rear cylinder body; a spring is arranged in a working cavity between the front piston and the rear piston; the bottom of the piston rod is fastened on the front piston, and the top of the piston rod is exposed out of a piston rod mounting hole of the front cylinder body; and the front side wall of the front cylinder body is provided with a front air inlet hole, the rear side wall of the rear cylinder body is provided with a rear air inlet hole, the rear air inlet hole is communicated with an oil-gas separator, and the front rear air inlet hole is communicated with the outlet of a voltage stabilization adjustor.

Description

technical field [0001] The invention relates to a diesel engine oil circuit control structure of a mobile screw compressor, in particular to a diesel engine governor of a mobile screw compressor. Background technique [0002] The existing diesel engine governor of mobile screw compressor, its structure is shown in figure 1 , which includes an upper valve body 1, a diaphragm 2, a valve core seat 3, a spring seat 4, a valve stem 5, a spring 6, an adjustment ring 7, a lower valve body 8, and a bushing 9. The top of the valve stem 5 is connected to the throttle of the diesel engine The handle (not shown in the figure, which belongs to the existing mature technology), when it works: when the unit is loaded, the compressed air is injected into the A port to push the diesel engine throttle to the rated speed, and the air at the A port is emptied when unloading, and the valve stem is 5 times bit, the diesel engine is idling. The governor mainly relies on the diaphragm 2 to sea...

AI Technical Summary

Problems solved by technology

The governor mainly relies on the diaphragm 2 to seal and slide. Due to the frequent action of the governor, the diaphragm 2 is easily damaged and the service life of the product is short; secondly, only by controlling the inlet pressure of the A port to adjust the extension of the valve stem 5 Length, so that the diesel engine can be adjusted steplessly. This adjustment method is relatively difficult. Small pressure fluctuations will easily cause excessive changes in the speed of the diesel engine, and the stability of the speed is poor.

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