Emergency stop unloading filter valve

Abstract

The invention discloses a sudden-stop unloading filter valve which is characterized by comprising a valve body assembly, a valve rod assembly, a valve rod assembly, a valve rod assembly and a valve rod assembly, and the valve body assembly is provided with an inlet and an outlet; a drain outlet; the control part can automatically control the valve element to reverse, and when the valve element is communicated with the inlet, the inlet is communicated with the outlet through the valve element; and when the valve core is disconnected from the inlet, the outlet is communicated with the drain outlet. When a safety accident is pre-judged to occur, the control element is automatically or manually used for controlling the two valve cores to simultaneously reverse, the inlet is disconnected from the outlet, liquid supply to the system is stopped, the outlet is synchronously communicated with the drain outlet, the system is unloaded, and corresponding elements stop moving, so that the accident is avoided. The labor intensity of operators is reduced; and the mounting requirements are reduced.

Description

technical field [0001] The invention relates to the technical field of hydraulic components, in particular to an emergency stop unloading filter valve. Background technique [0002] At present, in the design of almost all hydraulic support hydraulic systems at home and abroad, a normally open stop valve is usually added between the main liquid inlet pipeline and the pipeline of each hydraulic support liquid inlet branch. When the support of this station needs to be repaired or the liquid supply needs to be stopped in an emergency, it is only necessary to close the stop valve to facilitate the follow-up work; and when the stop valve is opened again, it will return to the state of the main liquid supply to the stand. [0003] The current cut-off valve is usually manually operated, which can meet the needs of daily maintenance. However, in the event of an emergency safety accident, the current solution cannot stop the liquid supply in time, unload it, and prevent the accident f...

AI Technical Summary

Problems solved by technology

[0003] The current cut-off valve is usually manually operated, which can meet the needs of daily maintenance. However, in the event of an emergency safety accident, the current solution cannot stop the liquid supply in time, unload it, and prevent the accident from happening. There are potential safety hazards.

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