Real-time monitoring device for rollers of high-temperature roller kiln

Abstract

The invention discloses a real-time monitoring device for rollers of a high-temperature roller kiln. The real-time monitoring device comprises a transmission roller part and an online monitoring part.The transmission roller part comprises multiple roller kiln rollers which are arranged in parallel, and the free ends of the roller kiln rollers are arranged on a free end installation frame. The online monitoring part comprises swing arms, angular displacement capacitance sensors, spiral leaf springs, wireless signal transmitting devices and a computer. The upper sides of the swing arms are attached to the exact lower sides of the rollers, and the lower sides of the swing arms are connected with rotating shafts. The spiral leaf springs are arranged at one ends of the rotating shafts, and theangular displacement capacitance sensors and the wireless signal transmitting devices are arranged at the other ends of the rotating shafts. When the roller kiln rollers rotate, radial jumping of thefree ends of the rollers is collected by a monitoring device, electric signals are generated and are converted into digital signals, and the digital signals are conveyed to the computer for analyzingand judging of the running conditions of the rollers. By means of the real-time monitoring device, the running conditions of the rollers in the kiln can be monitored in real time, the production accidents that the rollers lose efficacy and kiln blockage happens are avoided, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of monitoring and conveying equipment, and more specifically relates to a real-time monitoring device for rollers of a high-temperature roller kiln. Background technique [0002] The high-temperature roller kiln is a tunnel kiln with a square hearth. The bottom of the furnace is flat and composed of several rollers. The rollers rotate continuously under the drive of the power source. The top is equipped with burners and circulating fans, and there are multiple rows of workpieces or saggers for placing products. It moves slowly and continuously on the roller table, and completes the preheating, heating, heat preservation and cooling process of the product during the process of advancing from the kiln head to the kiln tail. As a transmission device, the normal rotation of the roller drives the workpiece or the sagger, so that the materials in the workpiece or the sagger are sintered normally, which directly af...

AI Technical Summary

Problems solved by technology

In addition, the length of the kiln is very long, and manual inspection of so many sticks is time-consuming and laborious

Second, the temperature inside the kiln is very high, and conventional methods cannot be used for stick detection. Once the roll breaks, and the equipment and personnel do not detect the abnormality of the roll stick in time, it is easy for the workpiece to be stuck in the kiln, which will affect the sintering efficiency. , and there may even be serious situations such as large-scale fracture of the roller behind the first broken roller and a large number of workpiece damages.

It has the following disadvantages: 1. It is impossible to monitor all the rollers; 2. The induction detection element is a temperature sensitive element, which has a short working life under high temperature conditions, and is not suitable for the high temperature working environment of the roller furnace; 3. Each detection zone, roller furnace The kiln is relatively isolated, and the overall monitoring of multiple areas cannot be realized. The monitoring efficiency is low, and it is not suitable for the implementation and promotion of modern factories.

However, the limitation of this method is quite obvious

Zone detection is required, and the position of the broken roll cannot be precisely located. It can only be fed back from the zone where the broken roll is located, and then the maintenance personnel can go to the zone where the broken roll is located to find out.

At the same time, this non-contact type (electromagnetic induction) has its disadvantages, as follows: First, the magnetic induction switch is prone to failure when the temperature is too high; second, the magnetic induction switch (non-contact type) is effective within a certain distance, if two rollers The rod spacing is small, which is prone to misjudgment of alarms; third, it requires more equipment investment costs, such as sensors and PLC IO access resources, especially for kilns with large output and long-distance transportation, which consume more resources

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