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Selective crusher for underground use

A crushing and selective technology, which is applied in the direction of solid separation, filter screen, grid, etc., can solve the problems of single discharge device, many faults of solid machine parts, and large noise, so as to achieve uniform particle size of the finished product and rapid and sufficient screening , the effect of large processing capacity

Inactive Publication Date: 2011-01-19
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] But this invention also has some defects: first, the power is introduced from one end, the chain transmission system, the body is subjected to a large torque, the noise is large, and it is difficult to reinforce the large sprocket; secondly, there is no angle between the axis and the horizontal when the body is installed, which is not conducive to The propulsion of gangue or debris, the machine does not have a large axial force, and the components of the solid machine have many failures; third, the discharge device is relatively simple, etc.
[0010] At the same time, this invention lacks the consideration of underground mining, and is not suitable for underground raw coal discharge.

Method used

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  • Selective crusher for underground use
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  • Selective crusher for underground use

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Effect test

Embodiment 1

[0067] The lifting plate 13 involved in the present invention has a height of 300-500mm and is made of section steel. In order to make the material rotate forward along the drum, adjust the falling times and residence time of the material in the drum 10, while ensuring the falling times of the material , so that the material is discharged out of the cylinder as soon as possible.

[0068] The lifting plate 13 is installed in the following forms:

[0069] 1. The lifting plate 13 is axially parallel to the cylinder 10, and there is a certain angle (about 3°) between the axis of the cylinder and the horizontal plane.

[0070] 2. The lifting plate 13 has a certain included angle (about 3°) with the axis of the drum 10, and is arranged in a spiral shape, while the axis of the cylinder body can be parallel to the horizontal plane, and also has a certain included angle (about 3°-5°).

[0071] 3. The lifting plate 13 and the axis of the drum 10 are in the same plane. The drum screen i...

Embodiment 2

[0074] Drum 10 is composed of feed end 4, discharge end 7, beam 18 and plane drum sieve plate 31. The shape of the screen surface is a regular dodecagon, and the position corresponding to beam 18 on the inner wall of drum 10 is fixed by fastening bolts. 32 fixes the lifting plate 13 with a radial inclination.

Embodiment 3

[0076] The structure of the present invention can have the following different forms, which are different according to the properties and requirements of different materials.

[0077] 1. For the crushing of soft materials, each group of striking plates 35 can be increased to 6-8 pieces, which are evenly distributed, and the speed of the central shaft can be reduced at the same time.

[0078] 2. According to the generation law of mineral cracks, large materials will produce cracks under small impact force, while small and medium-sized materials will produce cracks and breakage under relatively large impact force, so the radius of rotation of the striking plate 35 on the central axis can be along the axial direction The feed end 4 to the discharge end 7 gradually increases to meet the requirements of the crushing law. Such as Figure 4 shown.

[0079] 3. Depending on the crushability of the material, the striking plate 35 on the central shaft can be tilted longitudinally ...

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Abstract

The invention relates to a selective crusher for underground use, which comprises a supporting stand, a supporting roller mechanism and a revolving drum body, wherein the supporting roller mechanism is arranged on the supporting stand, and the revolving drum body is horizontally installed on the supporting roller mechanism through a rolling ring which is arranged around the drum body and is matched with a supporting roller in the supporting roller mechanism; the inner cavity of the roller is provided with a pre-screening section, a pushing and screening section, a crushing and screening section and a discharge section sequentially backwards from the feed end, wherein a pre-screening section discharge opening is arranged below the pre-screening section, and a discharge chute is arranged below the crushing and screening section; a center shaft which is coaxial with the roller and is driven by a power source to rotate is installed in the roller, a beater plate is arranged on the shaft body of the center shaft at the section matched with the pre-screening section, a rotor in the shape of an oblique tooth is arranged on the shaft body of the center shaft at the section matched with the crushing and screening section, and a spiral discharge auger is arranged on the shaft body of the center shaft at the section matched with the discharge section; and a plurality of axially arranged lifting plates and nail plates are installed on the inner wall of the screening drum of the crushing and screening section at intervals.

Description

technical field [0001] The invention relates to an underground selective crusher suitable for separating raw coal and gangue after underground mining. Background technique [0002] In the process of coal mining, gangue, ironware and other debris are inevitably produced. In recent years, with the development of coal mining technology, especially the application of fully mechanized mining, continuous mining and top coal caving technology, a large amount of top coal has been mixed into the coal mining process. The bottom plate and the mixed gangue make the quality of the coal deteriorate, causing huge pressure and harm to the coal washing and processing system, and the lifting capacity of the mine is also greatly consumed and wasted, and because the raw coal is directly lifted into the shaft, the amount of gangue on the ground continues to increase. A large number of "gangue hills" have been formed. It not only occupies a large amount of cultivated land, but also causes seriou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C13/26B02C23/08B02C18/00B07B1/22
Inventor 焦红光高艳阳马晓楠
Owner HENAN POLYTECHNIC UNIV
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