CN115569828A - Efficient automatic dry coal dressing equipment for coal mine and using method thereof - Google Patents

Abstract

The invention discloses high-efficiency automatic dry coal separation equipment for a coal mine and a using method thereof. The invention adopts a vertical falling screening mode, so that the raw coal is quickly contacted with the filter screen, and the speed of the raw coal screening is effectively improved by the pushing of the scraper, thereby achieving the purpose of high-efficiency automatic coal screening, saving time, and screening more coals in the same time, thereby improving the output value.

Description

High-efficiency automatic dry-process coal preparation equipment for coal mines and its application method

technical field

The invention belongs to the technical field of coal separation, and in particular relates to a high-efficiency automatic dry coal separation equipment for coal mines and a method for using the same.

Background technique

Coal preparation is also called coal washing, which is the process of sorting clean coal that meets the quality requirements of users from raw coal. Coking coal in industrialized coal utilization has certain strict requirements on ash and sulfur content, and clean coal that has been washed must be used. Industrial coal preparation is the use of mechanical processing methods or chemical treatment methods to remove harmful impurities in raw coal, recover associated minerals, improve coal quality, and provide different users with suitable quality coal products and associated mineral products.

Harmful impurities in raw coal include ash, sulfur, moisture, phosphorus and other small amounts of minerals. The lithofacies composition of coal and the quantity, type, nature and distribution state of minerals in coal are all factors that affect the separability of coal. In addition, some coal mines contain a small amount of rare metals such as germanium, vanadium and radioactive uranium and other associated minerals. In the process of coal preparation, it is necessary to separate the large stones in the coal and then remove the fine particles, which will cause Larger smoke and dust, direct discharge of smoke and dust will cause great pollution to the environment.

For example, Chinese patent No. CN201520303694.6 discloses a raw coal furnace front wet separation and coal gangue comprehensive utilization system, which includes a raw coal separation device, and a screening device is provided before the entrance of the raw coal separation device. Raw coal with a particle size not greater than 50 mm is obtained by screening with a sub-device, and the raw coal separation device separates the raw coal with a particle size not greater than 50 mm to obtain clean coal, medium coal and gangue, and the gangue enters the raw coal The coal gangue comprehensive processing device after the sorting device processes and recovers sulfur and/or metals; it includes a coal gangue crusher, a coal gangue sorting device and a sulfur concentrate processing system connected in sequence.

For example, Chinese patent No. CN202110341621.6 discloses a liquid-solid fluidized separation device for underground coal, which relates to the technical field of underground coal separation equipment, including a sorter body and a dosing device. A fluid distribution plate is arranged inside, and the fluid distribution plate divides the cavity into a liquid inlet chamber and a separation chamber. A water inlet is provided on one side of the liquid inlet chamber, and the water inlet is connected with the dosing device. The separation chamber A floating substance discharge port and a sinking substance discharge port are opened on one side, and a material inlet is also provided on the top of the separation chamber.

In the prior art, the method of vibrating screen is often used to screen coal blocks, but the efficiency of vibration screening is low, and the speed of vibration transmission is slow, so that the efficiency of coal screening is low. When used in large-scale coal yards, It takes more time, resulting in a decline in output value and prolonging the mining cycle.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a high-efficiency automatic dry-process coal preparation equipment for coal mines and its use method, which has the advantages of rapid screening, high screening efficiency and increased output value.

According to the first aspect of the technical solution of the present invention, a high-efficiency automatic dry-process coal preparation equipment for coal mines is provided, which includes a base and two conveyor belts, a mounting frame is fixedly installed on the top of the base, and a screening box is fixedly installed inside the mounting frame , the top of the screening box is fixedly installed with a protective box, the left side of the screening box is fixedly installed with a feed hopper, the top of the base is fixedly installed with a blower, the output end of the blower is fixedly installed with an air supply pipe, and the outer surface of the screening box is fixedly installed with two A discharge mechanism, the bottom of the conveyor belt is fixed with a support frame, and the top of the base is equipped with a clean coal conveyor belt.

Further, a discharge hopper is fixedly installed at the bottom of the screening box, a drive motor is fixedly installed inside the protective box, a rotating rod is installed inside the screening box, and two supporting rings are fixedly installed inside the screening box. A screening net is fixedly installed inside the support ring, an auger piece is fixedly installed on the outer surface of the rotating rod, and a scraper is fixedly installed on the outer surface of the rotating rod above the supporting ring. Preferably, booster blades are fixedly installed on the front and back of the scraper, cleaning brushes are fixed on the bottom of the scraper, and a purification mechanism is fixed on the back of the screening box.

Preferably, the discharge mechanism includes a discharge pipe, the top and bottom of the right side of the screening box are fixedly installed with a discharge pipe, the inner bottom wall of the discharge pipe is fixedly installed with a rotating shaft, and the bottom of the rotating shaft is installed with a blocking plate. An installation opening is fixedly installed on the top of the discharge pipe, and a support spring is fixedly installed between the barrier plate and the inner wall of the discharge pipe.

In addition, the right side wall of the discharge pipe is fixedly installed with a support wheel, the right side of the barrier plate is fixedly installed with a pull rope, the right side wall of the discharge pipe is fixedly installed with a transmission motor, and the output shaft of the transmission motor is fixedly installed with a winding roller. wheel.

Preferably, the blower is located on the right side of the installation frame, and the bottom end of the air supply pipe is fixedly communicated with the purification box.

Preferably, the left end of the discharge pipe is placed on the left side of the screening box, and the right ends of the two conveyor belts are respectively placed under the two discharge pipes.

According to the second aspect of the technical solution of the present invention, a method for using high-efficiency automatic dry-process coal preparation equipment for coal mines is provided, which includes the following steps:

Step S1: Send the raw coal to be screened into the screening box from the feed hopper, drive the rotating rod to rotate through the output shaft of the driving motor, and the rotating rod drives two scrapers to stir the raw coal;

Step S2: During the stirring process, the scraper will touch the barrier plate, push the barrier plate to the right, the raw coal will be filtered by the screen during the stirring process, and the filtered large stones and debris will be in the After the barrier plate is opened, it enters the inside of the discharge pipe;

Step S3: The stones entering the discharge pipe will be transported to the conveyor belt along the discharge pipe for discharge, and the raw coal will be discharged from the discharge hopper into the clean coal conveyor belt after being screened by two screens. ;

Step S4: When the raw coal is screened, the wind generated by the blower enters the interior of the purification tank from the air supply pipe, sucks the dust generated by the coal preparation into the interior of the purification tank, and absorbs the dust through the activated carbon adsorption particles inside the filter core , After being filtered and purified by multiple filters, it is discharged from the exhaust pipe.

Compared with the prior art, the technical solution of the present application has the following beneficial effects:

1. The coal mine uses high-efficiency automatic dry coal preparation equipment and its use method. By setting the tube plate, the raw coal to be screened is sent from the feed hopper to the inside of the screening box, and the output shaft of the drive motor drives the rotary rod to rotate. The rotating rod drives two scrapers to stir the raw coal. During the stirring process, the scrapers will touch the barrier plate and push the barrier plate to the right. The raw coal will be filtered by the screen during the stirring process. The filtered large Stones and debris will enter the discharge pipe after the barrier plate is opened, and the stones entering the discharge pipe will be transported to the conveyor belt along the discharge pipe for discharge. The raw coal will pass through two screens After the screen is screened, it is discharged into the clean coal conveyor belt from the discharge hopper and then transported away. The method of vertical drop screening is adopted to make the raw coal contact with the filter screen quickly. The speed of raw coal screening is effectively improved by the push of the scraper, thus It achieves the purpose of efficient automatic coal preparation, saves time, and can screen more coal in the same time, thereby increasing the output value.

2. The coal mine uses high-efficiency automatic dry-process coal preparation equipment and its use method. By setting up the purification mechanism, when the raw coal is screened, the wind generated by the blower enters the interior of the purification cylinder from the air supply pipe, and the coal produced by the coal preparation The dust is sucked into the purification box, and the dust is adsorbed by the activated carbon adsorption particles inside the filter core. After being filtered and purified by multiple filters, it is discharged from the exhaust pipe. Dust and fine coal slag are sucked into the purification box for purification, which can effectively reduce the smoke and dust generated during the screening process of raw coal, and discharge the smoke and dust after purification, avoiding air pollution caused by coal preparation, and has the advantages of energy saving and environmental protection.

Description of drawings

Fig. 1 is a kind of high-efficiency automatic dry process coal preparation equipment for coal mine of the present invention and the structure schematic diagram of using method thereof;

Fig. 2 is a kind of high-efficiency automatic dry-process coal preparation equipment for coal mines of the present invention and the screening box front sectional view of using method thereof;

Fig. 3 is a kind of high-efficiency automatic dry-process coal preparation equipment for coal mines of the present invention and the schematic diagram of the discharge pipe structure of the method of use thereof;

Fig. 4 is an enlarged view of the structure at A in Fig. 2 of a kind of high-efficiency automatic dry-process coal preparation equipment for coal mines of the present invention and its method of use;

Fig. 5 is a kind of high-efficiency automatic dry-process coal preparation equipment for coal mines of the present invention and its use method screening box right side sectional view;

Fig. 6 is a structural schematic diagram of a high-efficiency automatic dry-process coal preparation equipment for coal mines and a purification mechanism for its use according to the present invention.

Reference signs in the accompanying drawings: 1. Base; 2. Mounting frame; 3. Screening box; 4. Protection box; 5. Feeding hopper; 6. Blower; Discharging pipe; 802, rotating shaft; 803, barrier plate; 805, installation port; 806, support spring; 807, support wheel; 808, pull rope; 809, transmission motor; 810, rewinding wheel; , conveyor belt; 11, discharge hopper; 12, clean coal conveyor belt; 13, drive motor; 14, rotating rod; 15, rotating rod; 16, screening net; Push piece; 20, cleaning brush; 21, purification mechanism; 2101, purification box; 2102, filter screen; 2103, connecting pipe; 2104, installation box; 2105, purification cylinder; 2106, servo motor; Filter inner core; 2109, activated carbon adsorption particles; 2110, dust screen; 2111, smoke exhaust pipe.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The invention provides a high-efficiency automatic dry-process coal preparation equipment for coal mines, which includes a base and two conveyor belts, a mounting frame is fixedly installed on the top of the base, a screening box is fixedly installed inside the mounting frame, and a screening box is fixedly installed on the top of the screening box. The protective box, the left side of the screening box is fixedly installed with a feeding hopper, the top of the base is fixedly installed with a blower, the output end of the blower is fixedly installed with an air supply pipe, the outer surface of the screening box is fixedly installed with two discharge mechanisms, and the conveyor belt A support frame is fixedly installed at the bottom, a discharge hopper is fixedly installed at the bottom of the screening box, a clean coal conveyor belt is installed on the top of the base, a drive motor is fixedly installed inside the protection box, a rotating rod is installed inside the screening box, and a rotating rod is installed inside the screening box. There are two support rings fixedly installed inside, the inside of the support ring is fixedly installed with a screen, the outer surface of the rotating rod is fixedly installed with an auger sheet, and the outer surface of the rotating rod is fixedly installed above the supporting ring with a scraper, a scraper The front and back of the screen are fixedly equipped with a booster piece, the bottom of the scraper is fixedly equipped with a cleaning brush, and the back of the screening box is fixedly installed with a purification mechanism;

The discharge mechanism includes a discharge pipe. The top and bottom of the right side of the screening box are fixedly installed with a discharge pipe. The inner bottom wall of the discharge pipe is fixed with a rotating shaft. An installation port is fixedly installed, a support spring is fixedly installed between the barrier plate and the inner wall of the discharge pipe, a support wheel is fixedly installed on the right side wall of the discharge pipe, a pull rope is fixedly installed on the right side of the barrier plate, and the discharge pipe A transmission motor is fixedly installed on the right side wall, and a winding wheel is fixedly installed on the output shaft of the transmission motor;

The purification mechanism includes a purification box, a purification box is fixedly installed on the back of the screening box, a filter screen is fixedly installed on the left side of the purification box, a connecting pipe is fixedly installed inside the purification box, and an installation box is fixedly installed on the inner bottom wall of the purification box. The top of the box is rotated and installed with a purification cylinder, the inside of the installation box is fixed with a servo motor, the output shaft of the servo motor is fixed with a transmission rod, the inside of the purification cylinder is fixed with a filter core, and the inside of the filter core is filled with activated carbon To absorb particles, the interior of the purification cylinder is fixedly installed with a dust filter, and the back of the purification cylinder is fixedly installed with a smoke exhaust pipe.

Preferably, the blower is located on the right side of the installation frame, and the bottom end of the air supply pipe is fixedly communicated with the purification box.

Preferably, the left end of the discharge pipe is placed on the left side of the screening box, and the right ends of the two conveyor belts are respectively placed under the two discharge pipes.

Preferably, the support frame is on the left side of the base, the discharge hopper is inside the installation frame, and the clean coal conveyor belt is placed under the discharge hopper.

Preferably, the output shaft of the driving motor is fixedly connected to the rotating rod, and the bottom end of the rotating rod passes through two screens in turn and extends to the bottom of the screening box, and the eccentric position of the screen is fixedly installed with a support socketed on the outer surface of the rotating rod cylinder.

Preferably, the right side of the scraper is arc-shaped, and the right end of the scraper extends to the inside of the discharge pipe, and the scraper is at an eccentric position of the screening box.

Preferably, the bottom of the cleaning brush is attached to the corresponding screening net, the left end of the discharge pipe communicates with the screening box, and the height of the blocking plate is not greater than the height of the installation opening.

Preferably, the support spring is above the support wheel, the transmission motor is below the support wheel, the pull cord is wound around the outer surface of the support wheel, and the bottom end of the pull cord is wound up on the outer surface of the take-up wheel.

Preferably, the bottom end of the air supply pipe extends to the inside of the connecting pipe, the top end of the transmission rod is fixedly connected to the filter inner core, the dust filter is above the filter inner core, and the top end of the smoke exhaust pipe runs through the purification box and extends to the bottom of the purification box. outside.

A method for using high-efficiency automatic dry coal preparation equipment for coal mines, comprising the following steps:

Step S1: Send the raw coal to be screened into the screening box from the feed hopper, drive the rotating rod to rotate through the output shaft of the driving motor, and the rotating rod drives two scrapers to stir the raw coal;

Step S2: During the stirring process, the scraper will touch the barrier plate, push the barrier plate to the right, the raw coal will be filtered by the screen during the stirring process, and the filtered large stones and debris will be in the After the barrier plate is opened, it enters the inside of the discharge pipe;

Step S3: The stones entering the discharge pipe will be transported to the conveyor belt along the discharge pipe for discharge, and the raw coal will be discharged from the discharge hopper into the clean coal conveyor belt after being screened by two screens. ;

Step S4: When the raw coal is screened, the wind generated by the blower enters the interior of the purification tank from the air supply pipe, sucks the dust generated by the coal preparation into the interior of the purification tank, and absorbs the dust through the activated carbon adsorption particles inside the filter core , After being filtered and purified by multiple filters, it is discharged from the exhaust pipe.

Below in conjunction with the accompanying drawings, the high-efficiency automatic dry-process coal preparation equipment for coal mines and its use method of the present invention will be described in detail and explained.

Embodiment one:

Please refer to Fig. 1-Fig. 6, a kind of high-efficiency automatic dry method coal preparation equipment for coal mine in the present embodiment comprises base 1 and two conveyer belts 10, and the top of base 1 is fixedly installed with mounting bracket 2, and the top of mounting bracket 2 A screening box 3 is fixedly installed inside, a protective box 4 is fixedly installed on the top of the screening box 3, a feed hopper 5 is fixedly installed on the left side of the screening box 3, a blower 6 is fixedly installed on the top of the base 1, and the output end of the blower 6 is fixed. An air supply pipe 7 is installed, two discharge mechanisms 8 are fixedly installed on the outer surface of the screening box 3, a support frame 9 is fixedly installed at the bottom of the conveyor belt 10, a discharge hopper 11 is fixedly installed at the bottom of the screening box 3, and the top of the base 1 A clean coal conveyor belt 12 is provided, a driving motor 13 is fixedly installed inside the protection box 4, a rotating rod 14 is installed inside the screening box 3, and two supporting rings 15 are fixedly installed inside the screening box 3, and the supporting ring 15 Screening screen 16 is fixedly installed inside, auger sheet 17 is fixedly installed on the outer surface of rotating rod 14, scraper 18 is fixedly installed on the outer surface of rotating rod 14 and is positioned at the top of support ring 15, the front and back of scraper 18 are both A booster piece 19 is fixedly installed, a cleaning brush 20 is fixedly installed on the bottom of the scraper 18 , and a purification mechanism 21 is fixedly installed on the back of the screening box 3 .

In this embodiment, the blower 6 is on the right side of the installation frame 2, and the air supply pipe 7 communicates with the purification box 2101. The wind with suction force produced by the blower 6 is sent into the inside of the purification box 2101, and the dust is sucked into the purification box 2101 and discharged. The material pipe 801 is on the left side of the screening box 3, and the conveyor belt 10 is placed under the discharge pipe 801 for discharging sundries.

In this embodiment, the bottom of the cleaning brush 20 is attached to the corresponding screen 16, the left end of the discharge pipe 801 communicates with the screening box 3, the support spring 806 is above the support wheel 807, and the bottom of the air supply pipe 7 Extending to the inside of the connecting pipe 2103, the top of the transmission rod 2107 is fixedly connected with the filter inner core 2108, the dust filter 2110 is above the filter inner core 2108, the top of the exhaust pipe 2111 runs through the purification box 2101 and extends to the bottom of the purification box 2101 On the outside, the transmission motor 809 is located below the support wheel 807, the pull cord 808 is wound around the outer surface of the support wheel 807, the bottom end of the pull cord 808 is wound up on the outer surface of the take-up wheel 810, and the height of the barrier plate 803 is not greater than the installation opening 805 heights.

Embodiment two:

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the discharge mechanism 8 comprises a discharge pipe 801, the top and the bottom of the right side of the screening box 3 are fixedly equipped with a discharge pipe 801, and the inner bottom wall of the discharge pipe 801 A rotating shaft 802 is fixedly installed, and the bottom of the rotating shaft 802 is rotatably equipped with a barrier plate 803, and the top of the discharge pipe 801 is fixedly equipped with an installation port 805, and a support spring 806 is fixedly installed between the barrier plate 803 and the inner wall of the discharge pipe 801, and The right side wall of the material pipe 801 is fixedly equipped with a support wheel 807, the right side of the barrier plate 803 is fixedly installed with a stay rope 808, the right side wall of the discharge pipe 801 is fixedly installed with a transmission motor 809, and the output shaft of the transmission motor 809 is fixedly installed. There is a rewinding wheel 810.

In this embodiment, in the process of coal preparation, the raw coal is sent into the inside of the screening box 3 from the feed hopper 5, and the raw coal entering the screening box 3 will fall on the screen 16, and at this time, the driving motor 13 The output shaft will drive the rotary rod 14 to rotate, and the rotary rod 14 will drive the scraper 18 to rotate, and the raw coal will move in a circular motion on the screen 16, and the raw coal that reaches the standard will fall, and the large sundries or stones will continue to Pushed, when the scraper 18 comes to the discharge pipe 801, the scraper 18 will squeeze the blocking plate 803, and the blocking plate 803 will rotate to the right around the rotating shaft 802 under force, thereby opening the discharge pipe 801 , so that the discharge pipe 801 communicates with the screening box 3. At this time, the large pieces of debris will be pushed into the inside of the discharge pipe 801 by the scraper 18, and the booster sheet 19 will assist the scraper 18 to move the debris to the right. side push to increase the contact area. When the scraper 18 leaves the discharge pipe 801, under the action of the torsion of the support spring 806, the blocking plate 803 will automatically reset and close the discharge pipe 801. If the power is not enough to squeeze the barrier plate 803, the torsion of the support spring 806 can be changed according to the feed rate of the coal preparation, and the sundries entering the discharge pipe 801 will be sent to the conveyor belt 10 to be discharged.

In this embodiment, if there is a blockage inside the discharge pipe 801, the transmission motor 809 can be started, so that the output shaft of the transmission motor 809 drives the winding wheel 810 to tighten the stay cord 808, so that the stay cord 808 can move toward Pulling the blocking plate 803 in a larger range on the right side avoids the blockage of the coal preparation equipment, and does not need to disassemble the equipment for maintenance, which can avoid the stoppage of production caused by the blockage.

By adopting the above-mentioned technical scheme, the raw coal to be screened is sent into the inside of the screening box 3 from the feed hopper 5, and the output shaft of the drive motor 13 drives the rotating rod 14 to rotate, and the rotating rod 14 drives two scrapers 18 to carry out the cleaning of the raw coal. Stir, the scraper 18 will touch the barrier plate 803 during the stirring process, push the barrier plate 803 to the right, the raw coal will be filtered by the screen 16 during the stirring and moving process, and the filtered large stones and sundries Will enter the inside of the discharge pipe 801 after the barrier plate 803 is opened, and the stones entering the inside of the discharge pipe 801 will be transported to the conveyor belt 10 along the discharge pipe 801 for discharge, and the raw coal will pass through two screens 16 after screening, it is discharged from the discharge hopper 11 into the clean coal conveyor belt 12 and then transported away. The method of vertical drop screening is adopted to make the raw coal contact with the filter screen quickly, and the push of the scraper 18 effectively improves the efficiency of raw coal screening. Speed, so as to achieve the purpose of efficient automatic coal preparation, save time, and can screen more coal in the same time, thereby increasing the output value.

Embodiment three:

With reference to Fig. 5 and Fig. 6, purification mechanism 21 comprises purification box 2101, and the back side of screening box 3 is fixedly installed with purification box 2101, and the left side of purification box 2101 is fixedly installed with filter screen 2102, and the inside of purification box 2101 is fixedly installed with connecting pipe 2103, the inner bottom wall of the purification box 2101 is fixedly installed with an installation box 2104, the top of the installation box 2104 is rotatably installed with a purification cylinder 2105, the inside of the installation box 2104 is fixedly installed with a servo motor 2106, and the output shaft of the servo motor 2106 is fixedly installed with a The transmission rod 2107, the inside of the purification cylinder 2105 is fixedly installed with a filter core 2108, the inside of the filter core 2108 is filled with activated carbon adsorption particles 2109, the inside of the purification cylinder 2105 is fixedly installed with a dust filter 2110, and the back of the purification cylinder 2105 is fixedly installed There is a smoke exhaust pipe.

In this embodiment, in order to ensure that the coal preparation process is not mixed with too small particles and reduce environmental pollution, the blower 6 generates suction wind, which will enter the purification box 2101 under the action of the air supply pipe 7 inside, so that the too small debris or dust in the coal preparation is sucked into the interior of the purification box 2101, and the fine debris will combine with the air and enter the purification box 2101 from the filter screen 2102. At this time, the output shaft of the servo motor 2106 will The transmission rod 2107 will drive the purification cylinder 2105 to rotate, so that the air with dust will quickly contact with the filter inner core 2108. After the contact, the dust particles contained in it will be absorbed by the activated carbon adsorption particles 2109. The way of rotation can speed up the dust and filter core. Activated carbon absorbs the contact time of the particles 2109 to achieve the purpose of rapid purification. At the same time, a plurality of dust screens 2110 are set inside the purification cylinder 2105, which can effectively block the dust, and the purified air will be discharged from the exhaust pipe 2111.

By adopting the above-mentioned technical scheme, when the raw coal is screened, the wind generated by the blower 6 enters the interior of the purification cylinder 2105 from the air supply pipe 7, and the dust generated by the coal preparation is sucked into the interior of the purification box 2101, and passes through the filter core 2108 The internal activated carbon adsorption particles 2109 absorb the dust, and after being filtered and purified by multiple filters 2102, it is discharged from the exhaust pipe 2111. During the coal preparation process, the dust and fine coal slag generated during the coal preparation process are inhaled and purified by the blower 6 The purification box 2101 can effectively reduce the smoke and dust generated during the raw coal screening process, and discharge the smoke and dust after purification, avoiding air pollution caused by coal preparation, and has the advantages of energy saving and environmental protection.

Embodiment four:

The invention provides a method for using high-efficiency automatic dry coal preparation equipment for coal mines, which comprises the following steps:

Step S1: Send the raw coal to be screened into the inside of the screening box 3 from the feed hopper 5, drive the rotating rod 14 to rotate through the output shaft of the driving motor 13, and the rotating rod 14 drives two scrapers 18 to stir the raw coal;

Step S2: During the stirring process, the scraper 18 will touch the barrier plate 803, push the barrier plate 803 to the right, and the raw coal will be filtered by the screen 16 during the stirring process, and the filtered large stones and miscellaneous The material will enter the inside of the discharge pipe 801 after the barrier plate 803 is opened;

Step S3: The stones entering the discharge pipe 801 will be transported along the discharge pipe 801 to the conveyor belt 10 for discharge, and the raw coal will be discharged from the discharge hopper 11 into the clean coal after being screened by two screens 16 After taking 12, it was transported away;

Step S4: When the raw coal is screened, the wind generated by the blower 6 enters the interior of the purification cylinder 2105 from the air supply pipe 7, sucks the dust generated by the coal preparation into the interior of the purification box 2101, and passes through the activated carbon inside the filter core 2108 The adsorption particles 2109 absorb the dust, and after being filtered and purified by a plurality of filter screens 2102, they are discharged from the exhaust pipe 2111.

In this embodiment, the device that transmits energy to the continuously flowing fluid by the power of the blades on the rotating impeller or drives the blades to rotate by the energy transmitted by the fluid is called an impeller machine. In the impeller machine, the rotating blades act on the fluid. Positive or negative work, which increases or decreases the pressure of the fluid. The impeller machinery is divided into two categories: one is the working machine, from which the fluid absorbs power to increase the pressure head or water head, such as vane pumps and fans; the other The class is a prime mover, in which fluid expands, reduces pressure or water head to generate power, such as steam turbines and water turbines, people call the prime mover a turbine, and the working machine is a blade-type fluid machine.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. any such actual relationship or order exists between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A high-efficiency automatic dry-process coal preparation equipment for coal mines, which comprises a base (1) and two conveyor belts (10), is characterized in that: the top of the base (1) is fixedly equipped with a mounting frame (2), the mounting frame The inside of (2) is fixedly equipped with a screening box (3), the top of the screening box (3) is fixedly equipped with a protective box (4), the left side of the screening box (3) is fixedly installed with a feed hopper (5), and the base ( The blower (6) is fixedly installed on the top of 1), the air supply pipe (7) is fixedly installed at the output end of the blower (6), and two discharge mechanisms (8) are fixedly installed on the outer surface of the screening box (3). The bottom of (10) is fixedly equipped with bracing frame (9), and the top of base (1) is provided with clean coal conveyor belt (12). 2. A kind of high-efficiency automatic dry coal preparation equipment for coal mines according to claim 1, characterized in that: the bottom of the screening box (3) is fixedly installed with a discharge hopper (11), and the inside of the protection box (4) is fixedly installed A driving motor (13) is arranged, and a rotating rod (14) is installed in the inside of the screening box (3), and two support rings (15) are fixedly installed in the inside of the screening box (3). 3. A kind of high-efficiency automatic dry coal preparation equipment for coal mines according to claim 2, characterized in that: the inside of the support ring (15) is fixedly equipped with a screen (16), and the outer surface of the rotating rod (14) is fixed An auger sheet (17) is installed, and the outer surface of the rotating rod (14) is fixedly equipped with a scraper (18) above the support ring (15). 4. A kind of high-efficiency automatic dry-process coal preparation equipment for coal mines according to claim 3, characterized in that: the front and back sides of the scraper (18) are fixedly equipped with booster blades (19), and the scraper (18) A cleaning brush (20) is fixedly installed at the bottom of the screen, and a purification mechanism (21) is fixedly installed on the back of the screening box (3). 5. A kind of high-efficiency automatic dry-process coal preparation equipment for coal mines according to claim 1, characterized in that: the discharge mechanism (8) includes a discharge pipe (801), the top and bottom of the right side of the screening box (3) Both are fixedly installed with a discharge pipe (801), the inner bottom wall of the discharge pipe (801) is fixedly equipped with a rotating shaft (802), and the bottom of the rotating shaft (802) is rotatably installed with a blocking plate (803). 6. A kind of high-efficiency automatic dry-process coal preparation equipment for coal mines according to claim 5, characterized in that: the top of the discharge pipe (801) is fixedly installed with an installation port (805), and the barrier plate (803) is connected with the discharge pipe A support spring (806) is fixedly installed between the inner walls of the tube (801). 7. A kind of high-efficiency automatic dry-process coal preparation equipment for coal mines according to claim 5, characterized in that: the right side wall of the discharge pipe (801) is fixedly equipped with a support wheel (807), the barrier plate (803) The right side is fixedly equipped with a stay rope (808), the right side wall of the discharge pipe (801) is fixedly equipped with a transmission motor (809), and the output shaft of the transmission motor (809) is fixedly equipped with a winding wheel (810). 8. A kind of high-efficiency automatic dry-process coal preparation equipment for coal mines according to claim 1, characterized in that: the blower (6) is located on the right side of the mounting frame (2), and the bottom end of the air supply pipe (7) is in contact with the purification box (2101) Fixed connectivity. 9. A kind of high-efficiency automatic dry-process coal preparation equipment for coal mines according to claim 5, characterized in that: the left end of the discharge pipe (801) is placed on the left side of the screening box (3), and two conveyor belts (10 ) are placed under the two discharge pipes (801) respectively. 10. A method for using high-efficiency automatic dry coal preparation equipment for coal mines, characterized in that it comprises the following steps: Step S1: Send the raw coal to be screened into the inside of the screening box (3) from the feed hopper (5), drive the rotating rod (14) to rotate through the output shaft of the driving motor (13), and the rotating rod (14) drives two A scraper (18) stirs the raw coal; Step S2: During the stirring process, the scraper (18) will touch the blocking plate (803), push the blocking plate (803) to the right, and the raw coal will be filtered by the screen (16) during the stirring and moving process. The last large stones and sundries will enter the inside of the discharge pipe (801) after the barrier plate (803) is opened; Step S3: The stones entering the discharge pipe (801) will be transported to the conveyor belt (10) along the discharge pipe (801) for discharge, and the raw coal will be discharged from the The discharge hopper (11) is transported away after being discharged into the clean coal conveyor belt (12); Step S4: When the raw coal is screened, the wind generated by the blower (6) enters the interior of the purification cylinder (2105) from the air supply pipe (7), and the dust generated by the coal preparation is sucked into the interior of the purification chamber (2101), The dust is adsorbed by the activated carbon adsorption particles (2109) inside the filter core (2108), filtered and purified by multiple filter screens (2102), and then discharged from the smoke exhaust pipe (2111).

Images