CN113369142A

CN113369142A - Screening plant is used in coal production

Info

Publication number: CN113369142A
Application number: CN202110689501.5A
Authority: CN
Inventors: 梅海斌; 刘新
Original assignee: Wulat Zhongqi Haotong Clean Energy Co Ltd
Current assignee: Wulat Zhongqi Haotong Clean Energy Co Ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-09-10
Anticipated expiration: 2041-06-22
Also published as: CN113369142B

Abstract

The application relates to a screening device for coal production, which relates to the technical field of coal washing technology and comprises a treatment box, wherein a screen is arranged between the inner walls of two sides of the treatment box, the screen is an 3/4 circular ring and is provided with an opening, and a sealing plate for plugging the opening is connected to the treatment box in a sliding manner; a rotating shaft is transversely arranged at the central line of the screen, scrapers which are abutted against the screen and the inner walls of the two sides of the treatment box are arranged on the outer wall of the rotating shaft, and a feeding hopper communicated with the inside of the screen is arranged on one side of the treatment box; handle the case and deviate from open-ended one side slope and be provided with the sieve dish downwards, the aperture of sieve dish is the same with the aperture of screen cloth, and the opening position of screen cloth is provided with convex deflector, and the deflector upwards extends by open-ended lower extreme position to be located the top of screen cloth after, extend to the upper end position department of sieve dish. This application has the effect that improves the practicality of whole device.

Description

Screening plant is used in coal production

Technical Field

The application relates to the field of coal washing technology, in particular to a screening device for coal production.

Background

Coal washing is an indispensable procedure for coal deep processing, and is an industrial process for screening and sorting raw coal, then removing impurities in the raw coal, or classifying high-quality coal and low-quality coal.

Chinese patent CN209631572U discloses a coal screening plant, which comprises vibrating motor, elastic vibration support, conveying trough body, screening chute, support and screening plant, the elastic vibration support respectively with vibrating motor, conveying trough body and leg joint, vibrating motor passes through the elastic vibration support and drives the conveying trough body vibration, at the discharge end installation screening plant of conveying trough body, the screening plant lower extreme is equipped with the screening chute.

Screening device among the correlation technique utilizes the screening chute to sieve gliding coal at the during operation, but because the slip speed of coal is very fast, consequently can't guarantee the effective screening of coal, has the relatively poor defect of practicality during the in-service use, remains to improve.

Disclosure of Invention

In order to improve screening plant's practicality, this application provides a screening plant is used in coal production.

The application provides a screening plant for coal production adopts following technical scheme:

the screening device for coal production comprises a treatment box, wherein a screen is arranged between the inner walls of two sides of the treatment box, the screen is an 3/4 circular ring and is provided with an opening, and a sealing plate for plugging the opening is connected to the treatment box in a sliding manner; a rotating shaft penetrates through the center line of the screen, scrapers which are abutted against the screen and the inner walls of the two sides of the treatment box are arranged on the outer wall of the rotating shaft, and a feeding hopper communicated with the inside of the screen is arranged on one side of the treatment box; a sieve tray is obliquely and downwards arranged on one side of the treatment box, which is far away from the opening, the aperture of the sieve tray is the same as that of the sieve, and the sieve tray is arranged between the inner walls of the two sides of the treatment box; the opening position of the screen is provided with a circular arc-shaped guide plate, the guide plate extends upwards from the lower end position of the opening, is positioned above the screen and then extends to the upper end position of the screen tray; the treatment box is horizontally and slidably connected with a first collecting box and a second collecting box, the first collecting box is positioned under the screen and the screen tray, and the second collecting box is positioned at the discharging position at the lower end of the screen tray.

Through adopting above-mentioned technical scheme, when screening plant during operation, carry out the shutoff with the closing plate to the opening of screen cloth, then throw into coal in the screen cloth. Then the rotating shaft and the scraper are driven to rotate, coal is driven to move in the screen, the coal is fully screened, and the screened coal falls into the first collecting box. After screening finishes, open the closing plate, under the effect of the centrifugal force of scraper blade again afterwards, control coal along the departure of opening position. Meanwhile, under the guiding action of the guide plate, the coal automatically falls onto the screen plate and gradually falls into the second collecting box, and the coal is collected after being screened. And the landing in-process that is in, the piece that drops on the coal can drop to first collecting box along the hole on the screen tray in to guarantee the stable screening and the collection of coal, improve the screening effect of coal. Consequently, through setting up the inside screen cloth that has the rotation type scraper blade, control coal moves in the screen cloth to realize the abundant screening of coal, guarantee the screening effect of coal, also can improve whole device's practicality simultaneously.

Optionally, the lower end of the sieve tray extends horizontally to be provided with a sieve plate, the aperture of the sieve plate is larger than that of the sieve tray, the treatment box is connected with a third collection box in a horizontal sliding mode, the third collection box is located under the sieve plate, and the second collection box is located at the tail end discharging position of the sieve plate.

Through adopting above-mentioned technical scheme, when coal landing downwards along the sieve tray, will slide off to the sieve gradually on, can utilize the sieve to carry out the secondary screening to coal this moment to make the coal that sieves drop to in the third collecting box, realize the multistage screening and the collection of coal.

Optionally, the deflector deviates from open-ended one end extends and is provided with the guard plate, the guard plate with sieve tray and sieve parallel, and be fixed in the both sides inner wall of handling the case.

By adopting the technical scheme, the protection plates are arranged, so that the movement path of coal is a relatively closed channel, the directional transmission of the coal is realized, the coal splashing phenomenon is avoided, and the stable screening and collection of the coal are realized.

Optionally, an elastic rubber plate extends downwards at the connection position of the guide plate and the protection plate, and the lower end of the rubber plate inclines towards the direction of the sieve tray.

Through adopting above-mentioned technical scheme, when coal flew out, coal will have certain kinetic energy, supplies the coal striking this moment through setting up the rubber slab to weaken the kinetic energy of coal, make coal gently drop to the sieve tray on, realize the stable screening and the collection of coal. Meanwhile, the rubber plate plays a certain role in blocking, so that coal slides onto the sieve tray one by one, and the coal is fully sieved.

Optionally, through-holes are transversely formed in the two ends of the protection plate, rollers are horizontally and rotatably connected in the through-holes, a pair of friction belts are wound between the rollers and wound around the upper end face and the lower end face of the protection plate, and the movement direction of the friction belts is upwards arranged.

Through adopting above-mentioned technical scheme, when coal slided along sieve dish and sieve surface, drive the friction band motion through the control roller, applyed reverse effort to coal, reduced the sliding speed of coal on sieve dish and sieve to with the coal shakeout, guarantee the screening effect of coal.

Optionally, the bottom walls of the first collecting box, the second collecting box and the third collecting box are provided with elastic nets.

Through adopting above-mentioned technical scheme, play certain buffering through setting up the elastic net, avoid the coal of collecting to strike each other and the fragmentation appears, guarantee the stable screening and the collection of coal, guarantee the quality of coal simultaneously.

Optionally, the elastic net is arranged in an arch shape, and the middle of the elastic net is higher than the periphery of the elastic net.

By adopting the technical scheme, the elastic net is arranged to ensure that the coal falls to the middle position of the elastic net and automatically slides to the positions around, thereby reducing the impact between the coal and avoiding the phenomenon of fragmentation of the collected coal.

Optionally, the sealing plate includes a strip-shaped frame, a plate body is disposed between the middle position and one end of the frame, the plate body is used for covering the opening, the middle position and one end of the frame are open and are used for communicating the opening, and a locking mechanism is disposed between the frame and the treatment box.

Through adopting above-mentioned technical scheme, when screening coal, through the push-and-pull frame, make open position or plate body position alternate motion on the frame to the open position of screen cloth, can realize the open-close control of open position to make the screening process of coal light more convenient, increased the practicality of whole device.

Optionally, the locking mechanical system including set up in the baffle at the both ends of frame, the baffle is used for conflicting handle the both sides outer wall of case, locking mechanical system still including set up in handle the clamp plate of case both sides, the clamp plate rotate connect with handle the case and be used for compressing tightly the baffle outer wall.

Through adopting above-mentioned technical scheme, through the clamp plate that sets up the rotary type of baffle, realize that the quick locking of frame is fixed and remove to make the position control process of frame light convenient more, thereby realize the quick start-stop control of closing plate.

In summary, the present application includes at least one of the following beneficial technical effects:

the screen with the rotary scraper inside is arranged to control the coal to move in the screen, so that the coal is fully screened, the screening effect of the coal is ensured, and the practicability of the whole device is improved;

the sieve plate is additionally arranged to sieve the coal for the second time, and the sieved coal falls into the third collecting box, so that the multi-stage sieving and collecting of the coal are realized;

through setting up the closing plate that conveniently opens and close, realize the quick start-stop control of screen cloth opening position to make the screening process of coal light more convenient, increased the practicality of whole device.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

FIG. 2 is a schematic view showing the internal structure of a treatment tank in the embodiment of the present application.

Fig. 3 is a schematic structural view of a sealing plate in the embodiment of the present application.

Description of reference numerals: 1. a treatment tank; 11. a feeding hopper; 12. a first collection tank; 13. a second collection tank; 14. a third collection tank; 15. an elastic net; 2. screening a screen; 21. an opening; 22. a rotating shaft; 23. a speed reducer; 24. a squeegee; 3. a sealing plate; 31. a frame; 32. a plate body; 4. a sieve tray; 5. a sieve plate; 6. a guide plate; 61. a rubber plate; 7. a protection plate; 71. a through hole; 72. a roller; 73. a motor; 74. a friction belt; 8. a locking mechanism; 81. a baffle plate; 82. and (7) pressing a plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses screening plant for coal production. Referring to fig. 1 and 2, the screening device comprises a treatment tank 1 and a screen 2, wherein the treatment tank 1 is rectangular and is arranged in a hollow manner. The screen 2 is located inside the upper end of one end of the treatment tank 1, the screen 2 is an 3/4 ring and is provided with an opening 21, both sides of the screen 2 are fixed on the inner walls of both sides of the treatment tank 1, and the position of the opening 21 of the screen 2 is located obliquely above the screen 2.

Referring to fig. 1 and 2, a rotation shaft 22 is transversely inserted through a center line of the screen 2, the rotation shaft 22 is rotatably connected to the treatment tank 1, and a speed reducer 23 for driving the rotation shaft 22 to rotate is provided on an outer wall of the treatment tank 1. The outer wall of pivot 22 is provided with a pair of scraper blade 24, and a pair of scraper blade 24 is the relative setting in position, and deviates from the inner wall that the screen cloth 2 was contradicted to the one end of pivot 22, and the both sides inner wall of case 1 is handled in contradicting in scraper blade 24's both sides simultaneously.

Referring to fig. 1 and 2, a feeding hopper 11 is arranged at one side of the treatment box 1, and the feeding hopper 11 is communicated with the inside of the upper end of the screen 2 to realize feeding of coal. Meanwhile, the treatment box 1 is connected with a strip-shaped sealing plate 3 in a sliding manner, and the section of the sealing plate 3 is 1/4 circular arc and is used for plugging the opening 21 on the screen mesh 2.

Thus when coal is being screened, the sealing plate 3 is closed and coal is then fed into the screen 2 via the hopper 11. Then, the speed reducer 23 is used for controlling the rotating shaft 22 and the scraper 24 to synchronously rotate, and the scraper 24 is used for controlling coal to roll in the screen 2, so that the coal is fully screened. After the coal is screened, the sealing plate 3 is opened, and then the coal is automatically thrown out under the action of the centrifugal force of the coal, so that the coal is automatically cleaned.

Referring to fig. 1 and 2, a sieve tray 4 is arranged inside the treatment tank 1, and the sieve tray 4 is positioned on the side away from the opening 21. The upper end of the sieve tray 4 is fixed with the outer wall of the sieve screen 2, and the other end extends downwards in an inclined way. The two sides of the sieve tray 4 are fixed on the inner walls of the two sides of the treatment box 1, and the aperture of the sieve tray 4 is the same as that of the sieve mesh 2.

Referring to fig. 1 and 2, the lower end of the sieve tray 4 is horizontally provided with a sieve plate 5 in an extending manner, two sides of the sieve plate 5 are fixed on the inner walls of two sides of the treatment box 1, and the aperture of the sieve plate 5 is larger than that of the sieve tray 4, so that secondary sieving of coal is realized.

Referring to fig. 1 and 2, the screen 2 is provided with a guide plate 6 having a circular arc shape, one end of the guide plate 6 is fixed to the outer wall of the screen 2 and positioned below the opening 21, and the other end extends upward and is positioned above the screen 2. The other end of the guide plate 6 extends to the upper end position of the sieve tray 4, and both sides of the guide plate 6 are fixed to the inner walls of both sides of the treatment tank 1.

Referring to fig. 1 and 2, an elastic rubber plate 61 is fixed to a distal end position of the guide plate 6, and the rubber plate 61 is located between the shielding plate 7 and the sieve tray 4. The rubber sheet 61 is disposed obliquely, and the lower end is inclined toward the sieve tray 4. Therefore, when the coal is discharged outwards, the rubber plate 61 can be used for blocking the coal so as to weaken the kinetic energy of the coal and realize the stable transmission of the coal.

Referring to fig. 1 and 2, one end of the guide plate 6, which is away from the opening 21, is provided with a protection plate 7 in an extending manner, the protection plate 7 is parallel to the sieve tray 4 and the sieve plate 5, and two sides of the protection plate 7 are fixed on inner walls of two sides of the treatment box 1, so that the movement path of coal is a closed channel.

Referring to fig. 1 and 2, through holes 71 are transversely formed at both ends of the protection plate 7, rollers 72 are horizontally and rotatably connected in the through holes 71, the length direction of the rollers 72 is the same as that of the through holes 71, and a motor 73 for controlling one of the rollers 72 to rotate is arranged on the outer wall of the treatment box 1.

Referring to fig. 1 and 2, a friction belt 74 is wound between a pair of rollers 72, and the friction belt 74 is wound around the upper and lower end surfaces of the shielding plate 7. The portion of the friction belt 74 located at a position below the protection plate 7 is moved in an upward direction, so that a certain resistance can be applied to the coal for controlling the slow slip of the coal.

When coal flies out along the opening 21 on the screen 2, the coal slides along the inner wall of the guide plate 6 under the guiding action of the guide plate 6, and automatically falls onto the screen plate 4 after impacting the rubber plate 61. Meanwhile, the coal can automatically slide downwards, and secondary screening of the coal is realized by using the screen disc 4. The coal then slides down onto the screen plate 5, whereupon the coal is screened again and second stage screened using the screen plate 5.

Referring to fig. 1 and 2, a first collecting box 12, a second collecting box 13 and a third collecting box 14 are horizontally and slidably connected to the treatment box 1, the first collecting box 12 is located right below the screen 2 and the screen tray 4, the second collecting box 13 is located at a lower end discharging position of the screen plate 5, and the third collecting box 14 is located right below the screen plate 5.

Referring to fig. 1 and 2, the inner walls of the lower ends of the first collection box 12, the second collection box 13 and the third collection box 14 are all fixed with elastic nets 15, the elastic nets 15 are arranged in an arch shape, and the middle positions of the elastic nets are higher than the periphery of the elastic nets for realizing the shock absorption and the buffering of coal.

When coal is screened, the coal screened on the screen 2 and the screen disc 4 falls into the first collecting box 12, the coal screened on the screen plate 5 falls into the third collecting box 14, and large coal slides into the second collecting box 13, so that the coal is classified and collected.

Meanwhile, when coal is collected, the coal drops to the center of the elastic net 15 and then rapidly and automatically slides to the periphery of the first collecting box 12, the second collecting box 13 and the third collecting box 14, so that impact among the coal is reduced, and stable collection of the coal is realized.

Referring to fig. 2 and 3, the sealing plate 3 includes a strip-shaped frame 31, and the frame 31 is formed by four steel beams fixed end to end and horizontally slidably connected to the treatment tank 1. Wherein a plate body 32 is provided between the middle position of the frame 31 to one of the ends, and when the half with the plate body 32 is positioned in the processing tank 1, the plate body 32 covers the opening 21. The frame 31 is provided with an opening at a middle position to one end thereof, and the opening is communicated with the opening 21 when the half provided with the opening is positioned in the processing tank 1.

Referring to fig. 1 and 3, a lock mechanism 8 is provided between the frame 31 and the treatment tank 1, and the lock mechanism 8 includes a pair of shutters 81 and a pair of pressing plates 82. A pair of baffles 81 are provided at both ends of the frame 31, and the baffles 81 are adapted to abut against both side outer walls of the processing tank 1. The pair of pressing plates 82 are arranged on two sides of the treatment box 1, and the pressing plates 82 are rotatably connected with the treatment box 1 and used for pressing the outer wall of the baffle 81.

When the opening 21 is closed, the pressing plate 82 is rotated to disengage the shutter 81, and then the plate body 32 on the frame 31 is moved to the position of the opening 21 by pushing and pulling the frame 31, so that the opening 21 is covered. While the baffle 81 of the side abuts against the outer wall of the treatment tank 1, and then the pressing plate 82 of the side is rotated to press the baffle 81, whereby the fixation of the sealing plate 3, that is, the closing control of the opening 21 is realized. The opening step and the closing step of the opening 21 are the same, but the directions are opposite, and the description is omitted.

The implementation principle of the screening device for coal production in the embodiment of the application is as follows: when the coal is screened, the sealing plate 3 is closed, then the coal is put into the screen 2, and the scraper 24 is used for driving the coal to move, so that the coal is sufficiently screened. The sealing plate 3 is opened, coal is thrown out under the action of centrifugal force, and the coal falls onto the sieve tray 4 under the guiding action of the guide plate 6, and meanwhile, the coal automatically falls downwards, so that secondary sieving of the coal is realized. And then the coal is subjected to secondary screening by using the screen plate 5, so that the continuous screening and collection of the coal are realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a coal production is with screening plant which characterized in that: the device comprises a treatment box (1), a screen (2) is arranged between the inner walls of two sides of the treatment box (1), the screen (2) is an 3/4 circular ring and is provided with an opening (21), and a sealing plate (3) used for plugging the opening (21) is connected to the treatment box (1) in a sliding manner;

a rotating shaft (22) transversely penetrates through the center line of the screen (2), scrapers (24) which are abutted against the screen (2) and the inner walls of the two sides of the treatment box (1) are arranged on the outer wall of the rotating shaft (22), and a feeding hopper (11) communicated with the inside of the screen (2) is arranged on one side of the treatment box (1);

a sieve tray (4) is obliquely and downwards arranged on one side of the treatment box (1) departing from the opening (21), the aperture of the sieve tray (4) is the same as that of the sieve screen (2), and the sieve tray (4) is arranged between the inner walls of the two sides of the treatment box (1);

the sieve tray is characterized in that a circular arc-shaped guide plate (6) is arranged at the position of an opening (21) of the sieve screen (2), and the guide plate (6) extends upwards from the lower end position of the opening (21), is positioned above the sieve screen (2), and extends to the upper end position of the sieve tray (4);

the horizontal sliding connection has first collecting box (12) and second collecting box (13) on handling case (1), first collecting box (12) are located screen cloth (2) with sieve tray (4) under, second collecting box (13) are located the lower extreme ejection of compact position department of sieve tray (4).

2. The screening device for coal production according to claim 1, wherein: the lower extreme horizontal extension of sieve dish (4) is provided with sieve (5), the aperture of sieve (5) is greater than the aperture of sieve dish (4), it has third collecting box (14) to handle horizontal sliding connection on case (1), third collecting box (14) are located under sieve (5), and second collecting box (13) are located the terminal ejection of compact position department of sieve (5).

3. The screening device for coal production according to claim 2, wherein: the one end that deflector (6) deviated from opening (21) extends and is provided with guard plate (7), guard plate (7) with screen tray (4) and sieve (5) parallel, and are fixed in the both sides inner wall of handling case (1).

4. The screening device for coal production according to claim 3, wherein: the connection position of the guide plate (6) and the protection plate (7) extends downwards to form an elastic rubber plate (61), and the lower end of the rubber plate (61) inclines towards the direction of the sieve tray (4).

5. The screening device for coal production according to claim 3, wherein: both ends of guard plate (7) all transversely are provided with through-hole (71), horizontal rotation is connected with roller (72) in through-hole (71), and is a pair of the winding has friction area (74) between roller (72), friction area (74) encircle the upper and lower terminal surface of guard plate (7), and the direction of motion of friction area (74) is upwards setting.

6. The screening device for coal production according to claim 2, wherein: the bottom walls of the first collecting box (12), the second collecting box (13) and the third collecting box (14) are all provided with elastic nets (15).

7. The screening device for coal production according to claim 6, wherein: the elastic net (15) is arranged in an arch shape, and the middle position is higher than the periphery.

8. The screening device for coal production according to claim 1, wherein: the sealing plate (3) comprises a strip-shaped frame (31), a plate body (32) is arranged between the middle position of the frame (31) and one end of the frame, the plate body (32) is used for covering the opening (21), the middle position of the frame (31) and one end of the frame are arranged in an open mode and are used for communicating the opening (21), and a locking mechanism (8) is arranged between the frame (31) and the treatment box (1).

9. The screening device for coal production according to claim 8, wherein: locking mechanical system (8) including set up in baffle (81) at the both ends of frame (31), baffle (81) are used for conflicting handle the both sides outer wall of case (1), locking mechanical system (8) still including set up in handle clamp plate (82) of case (1) both sides, clamp plate (82) rotate connect with handle case (1) and be used for compressing tightly baffle (81) outer wall.