Pneumatic control device for throttle control

Abstract

The invention discloses a pneumatic control device for throttle control. The pneumatic control device comprises an air source box arranged on one side of a door A, a control box arranged on the other side of the door A, an air source box arranged on one side of a door B and a control box arranged on the other side of the door B, and also comprises air cylinders and locking detection magnetic control valves respectively arranged on the door bodies of the door A and the door B, wherein each air source box and each control box are respectively provided with a door opening button, a door closing button and an emergency pressure-relief hand pull valve; the main air inlet of the air source box is connected with a mine underground compressed-air pipeline, and is connected with the control box through an auxiliary air supply pipe and the filtering treatment of the air source box; the door opening button, the door closing button and the emergency pressure-relief hand pull valve of the air source box are connected with the corresponding positions of the control box, the air cylinders and the locking detection magnetic control valves on the door bodies are connected with the corresponding interfaces of the control boxes, and the locking control inlets and the locking control outlets of the control boxes of the door A and the door B are connected in an intersected manner. The pneumatic control device has the beneficial effects that no circuit devices are adopted, the potential safety hazards in high-gas mines are completely avoided, the cost is low, the operation is simple, and the maintenance is simple.

Description

technical field [0001] The invention belongs to the electric control technology and relates to an air control device for damper control. Background technique [0002] According to the requirements of the "Coal Mine Safety Regulations", two interlocking dampers must be installed between the inlet and return air shafts and between the main inlet and return air tunnels in the coal mine. The two dampers can be closed at the same time, when one damper is open, the other must be closed. This prevents the two doors from being opened at the same time, causing a short circuit in the air intake system and causing mine ventilation accidents. At present, the pressureless damper control device adopts electric control or hydraulic control, which requires electricity, high cost, great safety hazard, and unsatisfactory use effect. Contents of the invention [0003] In order to make up for the deficiencies of the prior art, the present invention provides a convenient, safe an...

AI Technical Summary

Problems solved by technology

At present, the non-pressure damper control device adopts electric control or hydraulic control, which must use electricity, the cost is high, the safety hazard is great, and the use effect is not ideal.

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