Oil cutting-off device for explosion-proof diesel engine

Abstract

The invention discloses an oil cutting-off device for an explosion-proof diesel engine. The oil cutting-off device comprises a working joint, and also comprises a cylinder block, a front end cover, a back end cover and a piston rod arranged in the cylinder block; the front end cover is hermetically mounted at the front end of the cylinder block; the back end cover is mounted at the back end of the cylinder block; one end of the piston rod is connected with the back end cover through a spring; the middle part of the piston rod is hermetically mounted in the cylinder block through a piston; the other end of the piston rod passes through the front end cover and is connected with the working joint; a sealing component is arranged between the piston rod and the front end cover; and a gas inlet is arranged in the front end cover. An electromagnet structure is replaced with a telescopic cylinder structure; the service life is long; so long as high-pressure gas is introduced into the gas inlet continuously, the phenomenon that the explosive-proof diesel engine is suffered from oil cutoff to shut down caused by that the working joint falls off cannot occur; when the gas supply of the gas inlet is stopped, the spring is able to withstand the piston back to an initial position; the elastic force of the spring prevents an oil supply mechanism of a fuel oil system of the explosion-proof diesel engine from being opened due to vibration; the operation safety factor of the diesel engine is improved; the structure is simple; and the use is convenient. The oil cutting-off device is applicable to a diesel engine.

Description

technical field [0001] The invention relates to an oil cut-off device for a diesel engine, in particular to an oil cut-off device for an explosion-proof diesel engine. Background technique [0002] Before the present invention was proposed, the oil cut-off device used in mine explosion-proof diesel engines was generally an explosion-proof electromagnet control device, which included an electromagnet and a working joint (the working joint was directly connected with the fuel supply mechanism of the explosion-proof diesel engine fuel system). The up and down movement of the working joint is controlled by controlling the power gain and loss of the electromagnet (that is, when the electromagnet is energized, the working joint is attracted by the electromagnet to move upward until it is attracted together with the electromagnet; when the electromagnet is de-energized , the working joint moves downward due to gravity and is disconnected from the electromagnet), thereby controlling...

AI Technical Summary

Problems solved by technology

[0003] 1. Since the working environment of the mining explosion-proof diesel engine is very harsh, and the electromagnet is an electronic product, in order to prevent explosion accidents, a sealed explosion-proof cover must be added outside the electromagnet; in this way, the heat generated by the electromagnet will be reduced. It cannot be dispersed in time, which seriously affects the service life of the oil cut-off device;

[0004] 2. Since the explosion-proof diesel engine vibrates very violently during use, the electromagnet and the working joint often appear to be disengaged, causing the explosion-proof diesel engine to often cut off the oil and turn off the flame;

[0005] 3. Since the operating environment of the explosion-proof diesel engine vibrates very violently, when the electromagnet is de-energized, the working joint will move up and down with the up-and-down vibration of the explosion-proof diesel engine, resulting in the fuel supply mechanism of the explosion-proof diesel engine fuel system being shaken. open, reducing the operating safety factor of the diesel engine

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