Built-in bottom filling anti-overflow control device for canned oil tank

Abstract

The invention provides a built-in bottom filling anti-overflow control device for a canned oil tank. The built-in bottom filling anti-overflow control device comprises a hydraulic control main valve,a floater guide valve and a connecting pipe, wherein the hydraulic control main valve is arranged in an inlet pipeline oil tank at the bottom of the oil tank, the floater guide valve is arranged at the top of the oil tank, the floater guide valve communicates with the hydraulic control main valve through a connecting pipe, and the liquid control main valve realizes opening and closing of the valvethrough the inlet and outlet pressure difference; when the liquid level is lower than the set height, the floater guide valve is opened, and the hydraulic control main valve is automatically opened under the pressure difference effect; when the liquid level reaches the set height, the floater floats to enable the floater pilot valve to be closed, and the hydraulic control main valve is automatically closed, namely, the hydraulic control main valve realizes pilot control through the floater pilot valve, and when the oil in the oil tank reaches the set volume height, the floater pilot valve isclosed, so that the hydraulic control main valve is controlled to be closed to prevent the oil tank from overflowing.

Description

technical field [0001] The invention belongs to the field of oil tank trucks, in particular to the technical field of oil tank truck overflow prevention control. Background technique [0002] When the oil tank is filled with oil at the bottom, if no one goes up to the top of the tank and observes the rise of the liquid level in the tank by opening the small manhole cover, it is easy to cause an accident of oil spillage from the top, which will seriously affect the operation safety and pollute the environment. [0003] The built-in bottom filling anti-overflow control device of the present invention is installed on the filling pipeline at the bottom of the oil tank and the top of the oil tank. When the oil tank is full, it can automatically close the valve and cut off the oil inlet pipeline to prevent oil loss in the oil tank caused by overflow. and safety hazards. Contents of the invention [0004] The present invention aims to solve the above problems of the prior art. ...

AI Technical Summary

Problems solved by technology

[0002] When the oil tank is filled with oil at the bottom, if no one goes up to the top of the tank and observes the rise of the liquid level in the tank by opening the small manhole cover, it is easy to cause an accident of oil spillage from the top, seriously affecting the operation safety and polluting the environment

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