CN100460077C - Choose Crushing Coal and Gangue Separator - Google Patents

Abstract

A selective crushing coal and gangue separator. A spiral sieve plate formed by arranging and combining multiple screws is arranged at one end of the bottom frame. Gears for mutual transmission are arranged between the multiple arranged and combined screws. The spiral sieve plate passes through the coupling The device is connected with a power device that rotates multiple screws; above the spiral sieve plate, there are multiple impact impellers fixed on the transmission shaft in the same direction as the screw, and the transmission shaft of the impact impeller is supported in the bearing seat of the housing. The shaft is connected with the explosion-proof motor at the other end of the chassis through a coupling. The separator can separate coal and gangue underground, so that large pieces of gangue can be directly used for filling gobs out of the well, which not only reduces transportation costs, saves land occupation on the ground, prevents surface subsidence, and saves environmental treatment costs, etc. , reduce the pollution to the environment, and save the transportation volume of gangue underground and above the well. Its equipment is simple and compact, small in size, easy to disassemble and assemble, good separation effect, and has wide practicability.

Description

Choose Crushing Coal and Gangue Separator

technical field

The invention relates to a selective crushing coal gangue separator, which is especially suitable for the separation of bulk coal and coal gangue in underground mines.

Background technique

For the separation of coal and gangue, the common separation methods include artificial hand separation, water separation, winnowing, and gamma ray separation.

1) Manual hand selection: mainly to use human eyes to pick out large pieces of gangue from the mixed coal on the belt conveyor by hand. Its working conditions are very difficult, the efficiency is low, it is easy to cause wrong selection, missed selection, and great potential safety hazards.

2) Water separation: use the different proportions of coal and gangue to separate coal and gangue by the buoyancy of water, and the separation effect is better. However, its equipment is expensive, the process is complicated, and the required site is large, and a large amount of water has no place to store underground. Therefore, it is difficult to use underground.

3) Wind separation: use the different densities of coal and gangue to separate coal and gangue by the buoyancy of the wind, which is suitable for areas with poor water resources. The investment is large, the floor area is large, the dust treatment equipment is relatively large, the treatment effect is not ideal, and it is not suitable for the underground environment.

4) Gamma ray coal and gangue sorting machine: use gamma ray to identify coal and gangue, generate different electrical signals according to the attenuation of gamma ray in coal and gangue, and control the actuator through the feedback of the electrical signal. Change the trajectory of gangue, so as to achieve the purpose of coal gangue separation. The system is complicated, the sorting capacity is small, and the hidden danger of radioactive sources is radiation. There is often water or coal slime in the raw coal on site, so that the surface of coal and gangue is covered by the slime, causing difficulties in identification.

With the increasing degree of mechanization of coal mining, the amount of large pieces of gangue mixed into coal is gradually increasing. The above coal preparation methods are all carried out on the ground. Environment, high cost, not suitable for downhole.

Contents of the invention

According to the problems existing in the prior art, the object of the present invention is to provide a selective crushing coal-gangue separator which is simple in structure, small in volume, convenient to disassemble and suitable for underground.

In the selective crushing coal and gangue separator of the present invention, a spiral sieve plate composed of multiple screw rods is arranged at one end of the bottom frame, and mutual transmission gears are arranged between the multiple screw rods, and the spiral sieve plate passes through the joint. The shaft device is connected with a power device that rotates multiple screws; above the spiral sieve plate, there are multiple impact impellers fixed on the drive shaft in the same direction as the screw, and the drive shaft of the impact impeller is supported in the bearing seat of the shell. The transmission shaft is connected with the explosion-proof motor arranged at the other end of the chassis through a coupling.

The power device of the spiral sieve plate is composed of an explosion-proof motor and a reducer connected by a coupling; the blades on the impact impeller are provided with multiple teeth along one side of the rotation direction, and the number of blades can be 2 to 4.

Underground sorting of coal gangue is an indispensable link in the coal mine production process, especially under the premise of emphasizing the implementation of green environment production and realizing sustainable development, this production link is particularly important. The selective crushing coal gangue separator of the present invention can directly separate the large pieces of coal gangue larger than 50 mm from the coal gangue in the underground, so that the large pieces of gangue can be directly used for filling the goaf without going out of the well, which not only reduces the Transportation costs, saving ground land occupation, preventing surface subsidence, saving environmental treatment costs, reducing environmental pollution, and saving the amount of gangue transported underground and above the mine. The device is simple and compact, small in size, convenient in assembly and disassembly, good in separation effect, and has wide practicability in the technical field.

Description of drawings

Fig. 1 is a structural front view of the present invention.

Fig. 2 is a side view of the structure of the present invention.

Fig. 3 is a top view of the structure of the present invention.

In the figure: 1-underframe, 2-housing, 3-spiral sieve plate, 4-impact impeller, 5, 8, 10-coupling, 6, 7-explosion-proof motor, 9-reducer.

Detailed ways

The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:

The selective crushing coal and gangue separator of the present invention is mainly composed of a spiral sieve plate 3 arranged on the bottom frame 1 and an impeller arranged above the spiral sieve plate 3 . The spiral sieve plate 3 is formed by arranging and combining multiple screws, and there are gears for mutual transmission between the multiple arranged and combined screws. It consists of an explosion-proof motor 7 and a reducer 9 connected through a coupling 8 . The spiral sieve plate 3 is decelerated by the explosion-proof motor 7 through the reducer 9, which drives the central screw shaft of the spiral sieve plate to rotate, and the central screw shaft drives the screws on both sides to rotate through the key-connected gear, thereby realizing screening and conveying. The top of the spiral sieve plate 3 is provided with a plurality of impact impellers 4 fixed on the transmission shaft in the same direction as the screw, and the blades on the impact impeller 4 are provided with multiple teeth along one side of the rotation direction, and the blades can be 2 to 4. The transmission shaft of the impact impeller 4 is supported in the bearing seat of the housing 2 , and the transmission shaft is connected with the explosion-proof motor 6 arranged at the other end of the chassis 1 through a shaft coupling 5 . The motor 6 drives the impact impeller 4 on the driving shaft to rotate through the coupling 5. When the coal and gangue mixture enters the separator, it is hit 2 to 4 times by the impact impeller 4 with a pre-set speed, and the coal is broken but the gangue is not. , when the beaten coal gangue falls on the spiral sieve plate 3, it is sieved by the spiral sieve plate 3, and the broken small pieces of coal fall into the sieve, and the unbroken large pieces of gangue remain on the sieve surface , transported to the discharge port by rotating the screw.

Claims (3)

1. Select the crushing coal gangue separator, which is characterized in that: one end of the chassis (1) is provided with a spiral sieve plate (3) formed by arranging and combining a plurality of screws, and a plurality of arranging and combining screws are provided with mutual The transmission gear, the spiral sieve plate (3) is connected with a power device to rotate multiple screws through a coupling (10); the spiral sieve plate (3) is provided with a plurality of screws fixed on the transmission shaft in the same direction as the screw rods. The impact impeller (4), the transmission shaft of the impact impeller (4) is supported in the bearing seat of the casing (2) of the separator, and the transmission shaft is connected with the other end of the chassis (1) through a coupling (5). The explosion-proof motor (6) is connected. 2. The selective crushing coal gangue separator according to claim 1, characterized in that: the power device of the spiral sieve plate (3) is composed of an explosion-proof motor (7) and a reducer connected by a coupling (8) (9) Composition. 3. The selective crushing coal and gangue separator according to claim 1, characterized in that: the blades on the impact impeller (4) are provided with a plurality of teeth along one side of the rotation direction, and the number of blades is 2-4.

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