Port lump coal screening device

Abstract

The invention provides a port lump coal screening device. The port lump coal screening device is characterized by comprising a plus-sieve belt conveyor, a forked hopper, plate scrapers, a swinging sieve, a minus-sieve belt conveyor, a rotating shaft and a controller; the forked hopper is located below the plus-sieve belt conveyor, the plate scrappers are located below the forked hopper, the swinging sieve is located below the plate scrapers, and the swinging sieve is connected with the rotating shaft; the controller is located at the top end of the swinging sieve, and the lower portion of the swinging sieve is connected with a screening net; and the tail end of the bottom edge of the swinging sieve is connected with a first-level lump coal belt conveyor, the tail end of the screening net is connected with a second-level lump coal belt conveyor, the minus-sieve belt conveyor is located below the screening net, and the two plate scrapers are arranged on the port lump coal screening device. According to the port lump coal screening device, coal flow at a feeding port is evenly divided, coal blocks can be separated at a time through multi-layer sieving, and the port lump coal screening device is high in screening capability, high in screening efficiency, low in equipment fault rate and high in practicability.

Description

technical field [0001] The invention relates to the screening field, in particular to a port lump coal screening device. Background technique [0002] With the development of domestic coal ports and the abundance of coal sources, improving coal quality has become the key to improving the economic benefits of enterprises. Lump coal screening has entered the field of coal ports from coal mines and coal preparation plants. In the prior art, the incoming coal enters the screening tower through the dumper or ship unloader, and the lump coal and pulverized coal are separated through the screening operation. Through the chute under the screen, it is transferred to the belt conveyor under the screen and enters the storage yard, so as to separate the materials with different particle sizes. The sieve is prone to uneven material flow and severe equipment vibration, which leads to high failure rates of the equipment and large errors in the distribution of materials. Contents of the ...

AI Technical Summary

Problems solved by technology

In the prior art, the incoming coal enters the screening tower through the dumper or ship unloader, and the lump coal and pulverized coal are separated through the screening operation. Through the chute under the screen, it is transferred to the belt conveyor under the screen and enters the storage yard, so as to separate the materials with different particle sizes. The sieve is prone to uneven material flow and severe equipment vibration, which in turn leads to a high failure rate of the equipment, and there are problems such as a large error in the amount of material distributed.

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