Anti-oil-leakage device used for electro-hydraulic servo valve

Abstract

The invention discloses an anti-oil-leakage device used for an electro-hydraulic servo valve. The anti-oil-leakage device comprises the electro-hydraulic servo valve and a system manifold block and further comprises a plurality of stop valves and an integrated stop valve bottom block. All oil inlets and oil outlets of the electro-hydraulic servo valve are provided with the stop valves correspondingly. The multiple stop valves are integrated onto the integrated stop valve bottom block. The electro-hydraulic servo valve is connected with the system manifold block through the integrated stop valve bottom block in an overlaid mode so that oil circuit communication is achieved, the problem that oil overflows when the electro-hydraulic servo valve is inspected or replaced is solved, the situation that the overflowed oil enters a technological lubrication medium is avoided, and therefore the machining surface quality of band foil is improved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic servo for non-ferrous metal plate, strip and foil rolling mills, in particular to an oil leakage prevention device for electro-hydraulic servo valves. Background technique [0002] At present, in the electro-hydraulic servo hydraulic system used in the non-ferrous metal plate, strip and foil rolling mill, the electro-hydraulic servo valve is generally installed directly on the oil circuit block, and there is no oil leakage prevention design for each oil port of the circuit when the electro-hydraulic servo valve is repaired and replaced. , with the enhancement of environmental protection and occupational health awareness and emergency preparations for equipment operation, people have put forward higher and higher requirements for the application of hydraulic systems. The cleanliness requirements are very high. During use, due to the cleanliness of the oil and other reasons, the servo valve is oft...

AI Technical Summary

Problems solved by technology

[0002] At present, in the electro-hydraulic servo hydraulic system used in the non-ferrous metal plate, strip and foil rolling mill, the electro-hydraulic servo valve is generally installed directly on the oil circuit block, and there is no oil leakage prevention design for each oil port of the circuit when the electro-hydraulic servo valve is repaired and replaced. , with the enhancement of environmental protection and occupational health awareness and emergency preparations for equipment operation, people have put forward higher and higher requirements for the application of hydraulic systems. The cleanliness requirements are very high. During use, due to the cleanliness of the oil and other reasons, the servo valve is often stuck or fails, so the servo valve has to be replaced. Every time the valve is changed, a considerable amount of oil in the system It will overflow from the oil port of the connecting surface, which not only pollutes the environment and wastes resources, but also brings more serious consequences in some production applications. On the lower oil block on both sides of the rolling mill archway, every time the valve is changed, the overflowing hydraulic oil will be mixed into the process lubricating medium such as rolling kerosene, which will pollute the process lubricating medium and seriously affect the surface of the aluminum strip and foil processing Quality, in the hydraulic servo system of rolling mill with multiple servo valves working in parallel, if one of the servo valves fails, the entire hydraulic servo system will not work normally; and in the system with oil leakage design, through immediate Close all cut-off valves on the inlet and outlet of the faulty servo valve, and the system can still work normally

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