Filtering device for leaked and returned oil of hydraulic pump in steelmaking hydraulic system

Abstract

The invention provides a filtering device for leaked and returned oil of a hydraulic pump in a steelmaking hydraulic system. The filtering device for the leaked and returned oil of the hydraulic pumpin the steelmaking hydraulic system comprises a first pipeline connected with the hydraulic pump, an auxiliary oil tank, a filtering assembly and a second pipeline, wherein the auxiliary oil tank comprises a tank body; the side wall of the tank body is provided with an oil inlet and an oil return port; the oil inlet is connected with the first pipeline; the leaked and returned oil of the hydraulicpump flows into the auxiliary oil tank through the first pipeline; the filtering assembly is mounted at the oil return port, is positioned on the inner side wall of the box body and is used for filtering the leaked and returned oil of the hydraulic pump; and one end of the second pipeline is connected with the oil return port, the other end of the second pipeline is inserted below a liquid levelof hydraulic oil in a main oil tank, and the leaked and returned oil of the hydraulic pump enters the main oil tank through the second pipeline after being filtered through the filtering assembly. According to the filtering device for the leaked and returned oil of the hydraulic pump in the steelmaking hydraulic system provided by the invention, through the filtering device, the problem that unfiltered leaked and returned oil directly returns to the main oil tank to pollute hydraulic oil is well solved, and the oil leakage amount of the hydraulic pump can be observed through a detachable coverplate, so that the operation condition of the hydraulic pump can be effectively monitored, and corresponding measures can be taken in time.

Description

technical field [0001] The invention belongs to the technical field of hydraulic systems in the electric arc furnace steelmaking industry, and in particular relates to a filter device for oil leakage from hydraulic pumps in the steelmaking hydraulic system. Background technique [0002] The hydraulic system is the key equipment in the steelmaking process of the electric arc furnace. Important key actions such as furnace body tilting, electrode lifting and furnace cover rotation in the hydraulic control are all controlled by the hydraulic proportional valve in the hydraulic system, and the hydraulic system containing the proportional valve The cleanliness of hydraulic oil is required to reach NAS1638-7 level, which is higher than that of ordinary hydraulic systems; all actions in the smelting process are powered by hydraulic pumps, which are realized by controlling the actions of hydraulic cylinders through hydraulic proportional valves, and the output of hydraulic pumps is co...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a filter device for hydraulic pump leakage oil in the steelmaking hydraulic system, to overcome the problems in the above-mentioned prior art that the oil cleanliness of the hydraulic system is not enough, which affects the precise control of the proportional valve, and cannot It is impossible to judge the operating condition of the hydraulic pump by observing the amount of oil drained from the hydraulic pump

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