Coal sample distributing device

Abstract

The invention relates to the technical field of coal test equipment, and in particular relates to a coal sample distributing device. The device includes a front and rear telescopic mechanism and a distributing claw; the front and rear telescopic mechanism is connected to the distributing claw and is used for driving the distributing claw to conduct horizontal motion in the sample. The distributing claw connected with the front and rear telescopic mechanism is used for controlling blanking of the sample; the automatic distributing method eliminates the need for artificial distributing, realizes high degree of automation, can be matched with automatic equipment, and is applicable to a wide range; the mechanical action with simple structure can effectively adjust the vibration amplitude, control the blanking speed, master blanking time, ensure uniformity of blanking; and the device adapts to different material conditions of dry coal and wet coal, and has low failure rate.

Description

technical field [0001] The invention relates to the technical field of coal detection equipment, in particular to a coal sample distribution device. Background technique [0002] At present, coal samples need to be decomposed during the preparation of coal samples. Traditionally, manual sample reduction is generally used, or mechanical shrinkage is used. Artificial cloth has a lot of dust, and it is difficult to control the feeding speed and continuity. In the process of mechanical shrinkage, if the belt feeding device is used to feed the material, the coal sample is likely to form a lump at the front end of the belt when the coal sample is pushed forward together with the belt, so that the lump coal sample cannot be uniformly dropped at one time. The purpose of blanking and controlling the feeding speed; if the vibrating feeder is used to directly vibrate the feeder, the vibration amplitude is adjusted through the vibration adjustment switch to control the feeding speed o...

AI Technical Summary

Problems solved by technology

Under the constant vibrating force, when the coal samples are relatively dry in the existing vibratory cutting, the cohesion between the coal samples is small, and the coal sample cutting speed is too fast. After the coal samples enter the shrinker, they pass through the shrinker The number of cuts is reduced, so that the uniformity of the coal sample shrinkage cannot be guaranteed; when the coal sample has a high humidity, the cohesion between the coal samples is relatively large, and the coal particles are bonded together, resulting in a The coal particles move together to the discharge port as a whole, which may easily lead to the blockage of the discharge port

When adjusting the amplitude of the vibration, when the amplitude becomes smaller, the wet coal will not be able to move to the feed port because the vibration force is too small; If the vibration becomes larger, the coal samples bonded together cannot be shaken apart, and the coal samples are still fed together in a lump, which affects the effect of the cloth.

Therefore, it is difficult to adjust the vibration amplitude and control the coal flow speed when using the traditional vibrating feeder for feeding, and it is difficult to adapt to dry coal and wet coal at the same time. There is a big difference in the feeding time of different coal samples. However, in the automation During the fabric process, time control is very important

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