Coal block crushing device for coal mine development

Abstract

The invention discloses a coal block crushing device for coal mine development. A primary conveyor belt is arranged under the primary coal block crushing assembly to automatically transport the primary crushed coal block to the secondary coal block crushing assembly. The secondary coal block crushing assembly There is a secondary conveyor belt for loading the secondary pulverized coal at the coal outlet, and a dust removal cover is provided above the secondary pulverized coal assembly. The invention can adjust the primary pulverized coal according to the needs through the adjustment plate. According to the size of the block, set the eccentric fly hammer to impact, firstly crush the larger block of coal, and set the oscillation device to effectively prevent the block of coal from clogging the primary coal block screen and prevent the phenomenon of jamming, while the secondary crushing , the centrifugal cylinder can quickly throw out the coal lumps, throw the coal lumps to the crushing blade on the crushing cylinder, realize further crushing of the coal lumps, and effectively improve the crushing efficiency. Effectively prevent the coal from clogging the secondary coal sieve, greatly improving the crushing efficiency.

Description

technical field [0001] The invention relates to a coal block crushing device for coal mining, which belongs to the technical field of coal mining. Background technique [0002] In coal mining, the initially mined coal blocks are generally large and are not suitable for direct shipment. Generally, the larger coal blocks need to be crushed so that they can be directly loaded and transported after being transported out. However, one of the current coal mining crushing devices generally adopts oppositely arranged gear teeth to crush the coal block. Although the structure of this crushing device is simple, the crushing efficiency is low, and it is easy to cause jamming during the crushing process. It is easy to burn out the motor, which greatly affects the crushing efficiency of the coal block, and can't realize the crushing of the larger coal block. The other is to use vibration, which has low crushing efficiency and poor crushing uniformity, and is difficult to meet the requir...

AI Technical Summary

Problems solved by technology

However, one of the current crushing devices for coal mines generally adopts oppositely arranged gear teeth to crush the coal lumps. Although the structure of this crushing device is simple, the crushing efficiency is low, and it is easy to cause jamming during the crushing process. It is easy to burn out the motor, which greatly affects the crushing efficiency of coal blocks, and it is impossible to crush larger coal blocks

The other is to use vibration, which has low crushing efficiency and poor crushing uniformity, and it is difficult to meet the requirements of high-efficiency coal crushing

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