CN201295624Y - Rotary bastard coal smash separator - Google Patents

Abstract

The utility model provides a rotary coal gangue crushing and sorting machine for separating coal and gangue. The sorting machine at least includes a frame, a material inlet located at the upper part of the frame, and a discharge port located at the lower part of the frame. There are two upper and lower crushing chambers in the frame, rotors are installed in the upper crushing chamber and the lower crushing chamber, mesh sieve plates are arranged around and below the upper crushing chamber, and vibrating sieve plates are installed in the lower part of the lower crushing chamber. , The gangue conveyor belt is arranged in the middle of the lower part of the frame, and the coal conveyor belt is located at the lower part of the frame and passes through the discharge port. The rotary gangue crushing and sorting machine has the advantages of compact structure, remarkable sorting effect, low cost, low energy consumption and high efficiency.

Description

Rotary gangue crushing and sorting machine

Technical field

The utility model relates to a coal and gangue sorting machine for selectively crushing coal and gangue.

Background technique

The current coal and gangue separation methods mainly include:

(1) Manual selection. Large chunks of gangue are picked out by hand from the mixed coal on the belt conveyor. 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 selection. Using the different proportions of coal and gangue, the buoyancy of water is used to separate coal and gangue, and the separation effect is better. However, the equipment is expensive, the process is complex, and the site required is large, so it is difficult to use underground.

(3) winnowing. Using the different density of coal and gangue, the buoyancy of wind is used to separate coal and gangue, which is suitable for areas with poor water resources. In addition to its large investment and large floor area, the dust treatment equipment is relatively large.

(4) Gamma ray coal gangue sorting machine. Gamma rays are used to identify coal and gangue, and different electrical signals are generated according to the attenuation of gamma rays in coal and gangue. Through the feedback of electrical signals, the actuator is controlled, and the actuator changes the trajectory of gangue to achieve separation of coal and gangue. the goal of. 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.

(5) Selective crushing and sorting machine. Because the particle size of the coal and gangue mixture directly crushed by the sorting machine cannot be too large, otherwise there will be disadvantages such as serious wear of parts, poor separation effect of coal and gangue, and high power consumption. For this reason, a preliminary crushing device, a screening device, etc. are added outside the existing sorting machine, thereby making the technological process complicated, and the whole sorting device is bulky, high in cost and low in efficiency. Most sorting machines use a screw drive screen driven by multiple gears. This type of screen plate is expensive and difficult to maintain.

Contents of the invention

In order to overcome the disadvantages of complex coal and gangue sorting process in the prior art, the entire sorting device is bulky, high cost, and low in efficiency, the utility model provides a new rotary coal gangue crushing and sorting machine. The sorting machine has compact structure, remarkable sorting effect, low cost, low energy consumption and high efficiency.

The technical solution adopted to realize the purpose of this utility model is: the rotary coal gangue crushing and sorting machine at least includes a frame and a feed port located at the upper part of the frame, and a discharge port located at the lower part of the frame. There are two crushing chambers, the upper crushing chamber and the lower crushing chamber are equipped with rotors, the upper crushing chamber is equipped with mesh sieve plates around and below, the lower part of the lower crushing chamber is equipped with vibrating sieve plates, and the middle of the lower part of the frame is equipped with The gangue conveyor belt and the coal conveyor belt are located at the lower part of the frame and pass through the discharge port.

And the rotors of the upper and lower crushing chambers are vertically arranged. There are two rotors in the lower crushing chamber, arranged in parallel, and the two rotate in opposite directions. There is a protective plate on the side of the lower crushing cavity. There is a sieve-shaped material guide plate under the feed inlet. The vibrating sieve plate is divided into two left and right pieces, both of which are arc-shaped. The lower end of each vibrating sieve plate is respectively provided with a vibrator, and the lower ends of the two vibrating sieve plates are respectively connected with the corresponding vibrator. A baffle is arranged above the gangue conveyor belt.

As can be seen from the above technical solutions, the utility model has the following beneficial effects:

a. Two crushing chambers with different functions arranged vertically are set. The upper crushing chamber is used for preliminary crushing of the gangue mixture, and the lower crushing chamber is used for selective crushing of the gangue mixture, so that the coal is broken but the gangue is not broken.

b. There is a sieve-shaped material guide plate at the entrance of the sorter, and the coal and gangue mixture entering the sorter will directly enter the lower crushing chamber if it meets the particle size requirements. The sieve plates are used as linings around and below the rotor in the upper crushing chamber, which can realize all-round discharge. All particles that can pass through the sieve plate gap size do not need to be scattered to the sieve hole at the lower part of the crusher before being discharged, but can leak out through the mesh sieve plate at any time in the hitting direction. This has just avoided gangue from being excessively crushed, so that gangue cannot be separated at last. In addition, the timely removal of the gangue mixture that meets the particle size requirements greatly reduces the rotational resistance of the rotor, which not only reduces power consumption, but also reduces wear on the rotor.

c. Two rotors are set in the lower crushing chamber, and they rotate in opposite directions to avoid air convection in the chamber, thereby reducing the coal ash in the air in the chamber.

d. Vibrating screen is used to make full use of the vibration of the sorting machine itself, and an exciter is added in order to improve efficiency. The utility model has the advantages of simple structure, low cost and convenient maintenance and replacement.

Because the rotary coal gangue crushing and sorting machine can control the particle size of the mixture before and at the same time as the primary crushing of the coal gangue mixture, avoiding excessive crushing and enhancing the separation effect, and the coal gangue mixture is initially crushed It can directly carry out selective crushing, which improves the sorting efficiency.

Description of drawings

Accompanying drawing is the structural representation of the utility model.

Detailed ways

As shown in the figure, the feed port 8 of the rotary coal gangue crushing and sorting machine provided by the utility model is located at the top of the frame 18, the discharge port 16 is located at the bottom of the frame 18, and a sieve is provided below the feed port 8. The material guide plate 10 and the frame 18 are provided with upper and lower crushing chambers, the upper crushing chamber 6 is provided with a rotor 5, and the lower crushing chamber 4 is provided with two rotors 2 and 12, and the rotors 2 and 12 are arranged in parallel. direction of rotation is opposite. The rotor 5 and the rotors 2 and 12 are arranged perpendicular to each other. A mesh sieve plate 11 is provided around and below the upper crushing chamber 6 . A protective plate 3 is provided on the side of the lower crushing chamber 4, and a vibrating screen plate 14 is provided at the bottom of the lower crushing chamber 4. vibrator 15, and the lower ends of the two vibrating sieve plates 14 are respectively connected to the corresponding vibrator 15. The middle of frame 18 bottoms is provided with gangue conveyor belt 1, and coal conveyor belt 17 is positioned at frame 18 bottoms, and passes through discharge opening 16, and the transmission direction of gangue conveyor belt 1 and coal conveyor belt 17 is vertical.

The mixture of coal and coal gangue enters the sorter through the feed port 8 and through the sieve-shaped material guide plate 10, which can be formed by coiled and welded round steel bars. Under the action of inertia and vibration force, the coal and gangue mixture meeting the particle size requirement passes through the material guide plate 10 and enters the lower crushing chamber 4 . The mixture that has not passed through the material guide plate 10 falls through the gap between the material guide plate 10 and the material guide plate 9 , is hit and broken by the rotor 5 driven by the motor 7 , and is thrown onto the mesh sieve plate 11 . All particles that can pass through the size of the sieve plate 11 slit can be discharged without being scattered to the bottom of the rotor 5, but can realize omni-directional discharge. If the coal gangue mixture at the lower part of the rotor 5 meets the particle size requirements, it will pass through the sieve plate 11 and fall into the lower crushing chamber 4; Continue to be hit by the rotor until the particle size requirement is met. All the mixture entering the lower crushing chamber 4 will be hit several times by the rotor 12 or rotor 2 with a pre-set speed, and finally the coal will be crushed but the stone will not be crushed. The rotor 12 rotates clockwise, and the rotor 2 rotates counterclockwise, and the two rotate in opposite directions to avoid convection in the cavity. After being beaten by the rotor 12, most of the gangue mixture falls on the vibrating screen plate 14 from the left side of the rotor 12. The protective plate 3 is also made of wear-resistant material, and is used to protect the inner wall of the sorting machine. The vibrator 15 makes the sieve plate 14 vibrate at a certain frequency, so that the mixture on the sieve plate 14 slides down without blocking the sieve holes. Under the action of vibration force and inertia, the coal falls on the conveyor belt 17 through the sieve hole, and then is transported out through the outlet 16, and the gangue then falls on the gangue conveyor belt 1, and is transported out through the outlet on the front side of the sorter. The top of gangue conveyor belt 1 is also provided with baffle plate 13, and baffle plate 13 is in order to prevent that a small amount of coal directly falls on the gangue conveyor belt. So far, the separation of coal and gangue has been realized.

The rotors 12 and 2 are driven by the same explosion-proof motor, which is controlled by a frequency converter, and the speed can be adjusted according to the coal quality.

Claims (7)

1. rotary bastard coal cracking and sorting machine, at least comprise frame and the charging aperture that is positioned at upper rack, and the discharging opening that is positioned at frame lower, it is characterized in that: be provided with two crusher chamber up and down in the frame, be equipped with rotor in last crusher chamber and the following crusher chamber, around the last crusher chamber and below is provided with netted sieve plate, the bottom of following crusher chamber is provided with oscillating screen plate, the centre of frame lower is provided with the spoil conveyer belt, and the coal conveyer belt is positioned at frame lower, and passes from discharging opening.

2. rotary bastard coal cracking and sorting machine according to claim 1 is characterized in that: the rotor of two crusher chamber is arranged each other in vertical direction up and down.

3. rotary bastard coal cracking and sorting machine according to claim 1 is characterized in that: the rotor in the following crusher chamber is two, is arranged in parallel, and both direction of rotation are opposite.

4. rotary bastard coal cracking and sorting machine according to claim 1 is characterized in that: the side in following crusher chamber is provided with baffle.

5. rotary bastard coal cracking and sorting machine according to claim 1 is characterized in that: be provided with sieve shape stock guide below charging aperture.

6. rotary bastard coal cracking and sorting machine according to claim 1, it is characterized in that: about oscillating screen plate is divided into two, all curved, the lower end of every oscillating screen plate is respectively equipped with vibrator, and the lower end of two oscillating screen plates is continuous with corresponding vibrator respectively.

7. rotary bastard coal cracking and sorting machine according to claim 1, it is characterized in that: the top of spoil conveyer belt is provided with baffle plate.