A hybrid mining slot door control device, system and a hybrid ore slot

Abstract

The invention provides a control device for a discharge door of a mixed mine trough, comprising a sealed box (301), a detection element group arranged inside the sealed box (301), a gas pipe (302) for delivering gas into the sealed box (301), and a pull rod (303), and the pull rod window (304) that makes the pull rod (303) stretch out of the sealing box (301); one end of the pull rod (303) is connected with the detection element group, and the other end stretches out the seal through the pull rod window (304) box (301); using the control device, it can effectively overcome the corrosion of the detection element by the high temperature, dusty and humid environment on the working site, prolong the service life and maintain the control accuracy, which is conducive to realizing automatic and accurate movement of the discharge door ground control. The invention also provides a mixing tank and a mixing tank control system.

Description

technical field [0001] The invention relates to a control device and system for a discharge door of a mixing ore tank in a sintering process and a mixing ore tank. Background technique [0002] The sintering process is an important link in the smelting technology, which is used to sinter the powdery mixed raw materials that are not easy to smelt (hereinafter referred to as the mixed material) into sintered ore that is easy to smelt. [0003] figure 1 Schematic diagram of the sintering system. Iron ore powder and auxiliary materials, such as iron ore powder, fuel, flux, ore return, etc., are sent to the mixer 112 through the batching conveyor belt 123 from the batching ore tank 111 and mixed with water. The mixed material mixed with water is sent to the mixed ore tank 114 through the mixed material conveyor belt 113 again. The bottom material of the bottom material ore trough 115 is first laid on the sintering machine conveyor belt 118, the mixed material flowing out from ...

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Problems solved by technology

However, since the dust on the sintering site will affect the amount of reflected light and thus affect the measurement accuracy, the accumulation of dust will also cause the optical signal to be undetectable, and the environment is humid and prone to dust adhesion, which also makes the optical measurement device unusable, so the optical detection method is adopted The scheme of controlling the discharge door of the mixing tank has not been implemented so far

In addition, people have tried to use wire winding sensor technology to realize the control of the discharge door of the mixed ore tank. Similarly, due to the dust in the sintering site, it will affect the movement of the wire winding slider, and the high temperature of the sintering site will affect the movement of the wire winding slider. The resistance value of the wire winding will change with the change of temperature. Since it is sensitive to the change of temperature, the control accuracy of the wire winding is difficult to meet the requirements, and it is impossible to provide an automatic control device to replace the control of the discharge door at the sintering site.

People have also tried to use ultrasonic wire winding sensing technology to realize the control of the discharge door of the mixed mine tank, but due to the influence of dust, high temperature and high humidity, the measurement accuracy cannot be satisfied, and an automatic control device cannot be provided.

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