Screening device used after coal mining

By setting up multiple sets of photoelectric sensors and distance sensors in the coal mine screening device, and using telescopic rods to adjust the height, the inaccuracy problem of the existing device in detecting the number of coal mines is solved, and accurate judgment of the height and volume of the coal mines is achieved. and counting, improving screening efficiency and speed.

CN108097601AActive Publication Date: 2018-06-01SHANXI SHENGDINGXIN ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANXI SHENGDINGXIN ENERGY TECH CO LTD
Filing Date
2017-12-15
Publication Date
2018-06-01

AI Technical Summary

Technical Problem

When the existing screening device after coal mining counts the number of coal mines, due to uneven coal mines, larger coal mines cannot pass the inlet rack and the counting is inaccurate, and smaller coal mines are easily missed.

Method used

A device including an entrance rack, an exit rack, a conveyor belt, a control cabinet, an alarm light, a motor, a distance sensor and a photoelectric sensor is designed. By setting hollow slots and poles on both sides of the entrance rack and the exit rack, grouped photoelectric sensors are installed. Sensor and distance sensor realize dual detection of coal mine height and volume, and adjust the height of the device through telescopic rods and springs to adapt to different coal mine sizes.

Benefits of technology

It achieves accurate detection of the number, height and volume of coal mines, avoids the problem of smaller coal mines being missed and larger coal mines being unable to pass, and improves screening efficiency and speed.

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Abstract

The invention discloses a screening device used after coal mining. The screening device comprises an inlet support, an outlet support, a conveying belt, a control cabinet, an alarm lamp, a motor, a left groove, a supporting mat, a distance inductor, a right groove, a strut, a stretchable rod, a connecting rod, a spring and photoelectric inductors. The screening device has the beneficial effects that the left groove and the right groove are formed in the side walls of the two sides of the inlet support and the outlet support, three sets of photoelectric inductors arranged at the upper portions,the middle portions and the lower portions are arranged inside the left groove and the right groove correspondingly, the three sets of photoelectric inductors on the left groove and the right grooveare correspondingly placed at different horizontal heights one by one, and therefore when the device is used, the number of coal mine passing through the screening device can be monitored and detected, the height and size of each coal mine can be judged, the condition that the coal mine with the small size and at the low height is not counted can be avoided, the inlet support and the outlet support run at the same time, the transferred coal mine is subject to comparison and detection two times, and the data accuracy is guaranteed.
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