Coal mine fully mechanized excavation face air flow field plc type intelligent control device

Abstract

The invention discloses a PLC-type intelligent control device for the air flow field of a coal mine comprehensive excavation face, which includes a linear displacement mechanism, an air outlet air cylinder, a rotating mechanism, an opening and closing mechanism and a PLC control box. The air outlet air cylinder is arranged under the linear displacement mechanism. The rotating mechanism is installed between the linear displacement mechanism and the air outlet cylinder. The air outlet cylinder includes the air cylinder outlet and the air cylinder frame. The rear end of the air cylinder air outlet is connected to the front end of the air cylinder frame. On the outside, the PLC control box is externally connected; the air outlet of the air duct includes a plurality of outer blades and a plurality of inner blades, the rear ends of the outer blades and inner blades are hinged with the front end of the fan frame, and the front ends of the outer blades and inner blades pass through the first The elastic ropes are connected in series, and the rear ends of the outer blades and the inner blades are connected in series through the second elastic ropes. The invention solves the problems of continuously increasing the power of the local fan and enlarging the diameter of the air cylinder, which may easily cause circulating air, excessive local wind speed in the working area, and deterioration of working conditions, and can reasonably control the wind flow field in the roadway.

Description

technical field [0001] The invention relates to a control device for an air outlet, in particular to a PLC-type intelligent control device for the wind flow field of a fully mechanized coal mine excavation face. Background technique [0002] In the 21st century, the demand for energy consumption is increasing rapidly, and the energy issue has already become an issue that countries all over the world attach great importance to. my country is a large coal-consuming country, and coal accounts for more than 70% of my country's primary energy consumption; at the same time, my country is also a large coal-producing country, and coal production accounts for about 78.6% of the total primary energy consumption. In recent years, the safety situation of my country's coal mines has generally improved, but the safety level of coal mines is far behind that of developed countries such as Europe and the United States. Coal mine production safety accidents still occur frequently, causing hea...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and provide a PLC-type intelligent control device for the wind flow field of fully mechanized coal mine excavation face. The power of local fans and the increase of the diameter of the air cylinder are likely to cause problems such as circulating air, excessive local wind speed in the working area, and deterioration of working conditions. The air flow field in the roadway can be reasonably controlled

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