Method for preventing slipping of lower belt of blast furnace groove

Abstract

The invention relates to a method for preventing slipping of a lower belt of a blast furnace groove. The method for preventing slipping of the lower belt of the blast furnace groove is characterized in that the method comprises the steps that (1) the speed of the belt is detected; (2) the output of a device in the field is controlled and then the speed of the belt is detected, wherein probes, namely high-speed proximity switches, of a metal induction device fixed on a driven roller and of a detection device mainly serve as signal sources of a speed detection device. The method for preventing slipping of the lower belt of the blast furnace groove has the advantages that equipment is simple, the failure rate is low, and normal production can not be delayed.

Description

technical field [0001] The invention relates to blast furnace raw material control technology, which is a technology to prevent the belt from being crushed to death due to the sudden discharge of the unloading hopper in the raw material belt system under the blast furnace tank. [0002] slippery method. Background technique [0003] In the raw material conveying system under the blast furnace trough, when the raw materials from the weighing hopper are unloaded on the belt, if the gate unloading angle is not designed properly or the gate opening time interval is not well controlled, it is easy to cause all the raw materials to fall on the belt at once. As a result, the belt is crushed to death, and there is a relative displacement between the belt and the driving wheel. Once the relative displacement between the belt and the driving wheel is commonly known as slipping, the consequences will be very serious, ranging from abrasion of the rubber on the surface of the driving wh...

AI Technical Summary

Problems solved by technology

[0003] In the raw material conveying system under the blast furnace trough, when the raw materials from the weighing hopper are unloaded on the belt, if the gate unloading angle is not designed properly or the gate opening time interval is not well controlled, it is easy to cause all the raw materials to fall on the belt at once. As a result, the belt is crushed to death, and there is a relative displacement between the belt and the driving wheel. Once the relative displacement between the belt and the driving wheel is commonly known as slipping, the consequences will be very serious, ranging from abrasion of the rubber on the surface of the driving wheel to serious damage. Such accidents abound. It is not that these belt systems lack slip detection devices. The reason is that there are two factors in the current method that lead to incomplete use. 1. The device detection is too complicated, and the technology involved has adopted speed measurement The detection methods of generators and rotary encoders, as well as multi-functional integrated devices, these methods are used in belt systems, and because of the harsh environment of use, the failure rate of this detection system itself is very high, so it often results in these After the detection device fails, it is habitual not to carry out maintenance, resulting in incomplete detection function, resulting in accidents due to insufficient detection and weak preventive measures

2. When the device starts protection, the belt will be stopped immediately in the first reaction. Although there is an interlock protection for stopping the belt, the time difference between the actions of gates and other on-site equipment will lead to the expansion of the accident, because when the device starts protection, the belt conveyor will be stopped immediately. However, because the material of the gate is still being unloaded, the belt is further crushed to death. Although there is no slippage, the accident handling of the pressing material will greatly delay production.

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