Submersible electrohydraulic control gate valve for mining

Abstract

A submersible electrohydraulic control gate valve for mining is provided with a pull weight board which is connected with a gate valve lead screw and an electrohydraulic control system, wherein the electrohydraulic control system comprises an anti-explosion submersible electrical machine which is connected with the gate valve lead screw by an airbag type hydraulic actuator; the pull weight board is connected with the gate valve lead screw by a lead screw connecting rod through corresponding thread, a lock nut locks the pull weight board and the lead screw connecting rod, the lead screw lock nut limits the position of the lead screw connecting rod in the connection of the lead screw and the lead screw connecting rod; and the gate valve is connected with a gate valve wedge plate by the gatevalve lead screw through a T-shaped groove. In the invention, complicated mechanical drive structures are not used, the explosion-proof electric machine is used as a power source, the hydraulic control system is used to drive an oil cylinder and the problems that manual and electric gate valves have bad reliability and high failure rate because the lead screw is used for rotating can be solved, the normal operation of a drainage system can be ensured. The submersible electrohydraulic control gate valve has high reliability and can carry out underwater operation for a long time.

Description

technical field [0001] The invention relates to a submersible electro-hydraulic control gate valve. In particular, the invention relates to a technical scheme of a mine-used submersible electro-hydraulic control gate valve used for long-term underwater work in coal mines. Background technique [0002] The drainage system of the coal mine underground water pump room is one of the four major pieces of equipment in the coal mine. Coal mine safety production. In the drainage system, the gate valve is one of the key hardware in the entire drainage system, and its degree of automation and performance play a very important role in the normal drainage of the drainage system. Most of the existing coal mine underground drainage systems use manual gate valves or electric gate valves. The manual gate valve mainly has the following problems: (1) Poor reliability. The manual gate valve adopts the screw nut transmission mode, and the rotation mode of the nut is converted into the linear...

AI Technical Summary

Problems solved by technology

[0003] Based on the existing underground drainage system of coal mines, the present invention provides a mine-used submersible electro-hydraulic control gate valve, which is mainly used to solve the problems of poor reliability, high failure rate, and no overload protection function of manual gate valves and electric gate valves.

Images