Multi-channel sampling system

Abstract

The invention provides a multi-channel sampling system. The system is provided with at least two groups of sampling heads which extract coal samples from a main coal conveying belt independently respectively; a dry coal sample and a wet coal sample are sent out from different positions of a two-way feeding belt respectively, the coal samples are received and conveyed by a first-stage dividing belt, the dry coal sample conveyed from a first end is divided by a first-stage dividing device, the wet coal sample conveyed from a second end is divided by a high-moisture dividing device, division is realized according to dryness and wetness of the coal samples, and the problem of blockage of a single dividing device is solved; the dry coal sample is conveyed to a uniform distribution belt throughthe first-stage dividing device, is evenly distributed by the uniform distribution belt and enters a second-stage dividing device for secondary dividing. Different coal sample conveying lines are formed through combination of components such as the sampling heads, the two-way feeding belt, the first-stage dividing device, the high-moisture dividing device and the second-stage dividing device, onlyone coal sample conveying line operates and can be switched to different coal sample conveying lines in case of blockage, so that the blocked line is repaired, and shutdown caused by faults is avoided.

Description

technical field [0001] The invention relates to the technical field of coal sampling, and further relates to a multi-channel sampling system. Background technique [0002] The large belt conveyor used in the port is used to load and unload coal. During the coal transportation process, it is necessary to take a coal sample, test the calorific value of the coal sample, and judge the quality of the coal as the basis for settlement; the coal in the port usually has a high water content and a high viscosity. Large, it is easy to stick to the conveying channel of the sampling machine and cause blockage. Once blocked, it needs to be shut down for maintenance. At the same time, the conveyor belt that normally transports coal also needs to be shut down. Otherwise, the quality of the coal sample cannot be tested and the settlement cannot be performed. [0003] The port company requires the coal quality, time and quantity to be loaded first, so as to prevent the ship from being unable ...

AI Technical Summary

Problems solved by technology

[0002] The large belt conveyor used in the port is used to load and unload coal. During the coal transportation process, it is necessary to take a coal sample, test the calorific value of the coal sample, and judge the quality of the coal as the basis for settlement; the coal in the port usually has a high water content and a high viscosity. Large, it is easy to stick to the conveying channel of the sampling machine and cause blockage. Once blocked, it needs to be shut down for maintenance. At the same time, the conveyor belt that normally transports coal also needs to be shut down. Otherwise, the quality of the coal sample cannot be tested and the settlement cannot be carried out.

[0003] The port company requires the coal quality, time and quantity to be loaded first, so as to prevent the ship from being unable to leave the port after the tide falls, causing huge economic losses and affecting other ships entering the port; similarly, for the coal loaded by the train, the belt sampling also has the same problem. The problem is that the train cannot stop on the rails for a long time; once the traditional sampling system fails, it will not be able to sample normally, which will bring a series of impacts

[0004] For those skilled in the art, how to solve the problem of shutting down caused by blockage of the sampling system is a technical problem that needs to be solved at present

Images