Filling material feeding device and system

Abstract

The invention discloses a filling material feeding device and system, and relates to the technical field of filling in mining industry. The filling material feeding device comprises a material bin andan arch breaking device for conducting arch breaking on the interior of the material bin. A radar level gauge is mounted at the top of the material bin. A flow stabilizing device is mounted at a discharging outlet of the material bin. An outlet of the flow stabilizing device is connected with a micro-powder scale. A screw feeder is arranged below an outlet of the micro-powder scale. According tothe filling material feeding device, smooth feeding is ensured, and metering precision is high. The filling material feeding system comprises a cement tank, a filter box and the filling material feeding device. The cement tank communicates with a feeding inlet of the filter box. A discharging outlet of the filter box communicates with a feeding inlet of the material bin. The filling material feeding system is smooth in feeding and high in metering precision.

Description

technical field [0001] The invention relates to the technical field of mining filling, in particular to a filling material feeding device and system. Background technique [0002] The filling mining method refers to the mining method of filling the goaf with filling materials while carrying out ore dropping, transportation and other operations. The purpose of filling is to support the two sides of rocks in the goaf, and to create a foothold for the continuation of the layered mining above. It is suitable for deposits where the ore and surrounding rock are not stable and large exposure is not allowed; deposits whose surface needs to be protected; rare precious metals or high-grade deposits; spontaneous combustion sulfide deposits; deposits with complex occurrence conditions, etc. In the technical field of filling technology in the mining industry, cement or cement powder is often used as filling material. [0003] The structure of most of the cement feeding systems currentl...

AI Technical Summary

Problems solved by technology

There are some disadvantages in this cement feeding system: First, the ultrasonic material level gauge cannot accurately measure the material level height in the cement silo (or cement powder silo), because the ultra-deep wave is reflected by emitting sound waves, and the signal is transmitted Back to calculate the height of the material level, but due to the large dust in the bin during the feeding process or the actual unloading process of the filling material, the sound wave interference is large, so the height cannot be accurately measured

Secondly, the vibrating motor used in the cone of the cement silo (or cement powder silo) for vibrating blanking is not effective, and the arching inside the silo is serious, which will cause unsmooth blanking

Then, the screw feeder and screw electronic scale are used to implement the order of feeding first and then measuring. The measurement accuracy is not high, mainly because the electronic scale is arranged at the lower end of the feeder, and the weighing accuracy will be affected by the feeding frequency of the feeder and the lower end. Influenced by the material situation, in addition, the length of the electronic scale is relatively long, which will also affect the accuracy

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