Coal mine screening device for coal mining

Abstract

The utility model discloses a coal mine screening device for coal mining, and relates to the technical field of mining equipment. The screening device comprises a fixed base, a screening barrel is arranged on the fixed base, a threaded conveying rod used for conveying materials is arranged in the screening barrel, and a rotating shaft on one side of the threaded conveying rod penetrates through one side wall of the screening barrel to be connected with a transmission mechanism used for driving the threaded conveying rod. And a gap feeding mechanism is arranged on the screening barrel. The transmission mechanism rotates to synchronously drive the rotating plate to periodically open and close, and the intermittent feeding mechanism periodically rotates to control the discharging of coal, so that the problem that the coal is accumulated at the feeding hole due to excessive feeding at one time can be effectively avoided, the feeding uniformity and controllability are improved, and the feeding efficiency is improved. And meanwhile, by periodically controlling opening and closing of the intermittent feeding mechanism, the amount of coal entering the screening barrel can be controlled, the blocking phenomenon caused by excessive accumulation of the coal on the screen is avoided, and the screening efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mining equipment, and particularly relates to a coal screening device for coal mining. Background Art

[0002] Coal is a solid combustible mineral formed by the complex biochemical and physicochemical changes of ancient plants buried underground. Coal is hailed as black gold and the food of industry by people. It is one of the main energy sources used in the human world. After coal mining, a screening device is needed.

[0003] However, when the existing device screens coal, when feeding materials into the screening device through the feeding port, if too much material is fed at one time, it is easy to cause the coal to accumulate at the feeding port and unable to fall, and when too much material is fed, it may accumulate and reduce the screening efficiency.

[0004] Therefore, a coal screening device for coal mining is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a coal screening device for coal mining to solve the problems raised in the above background art.

[0006] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0007] A coal screening device for coal mining includes a fixed base, a screening barrel is arranged on the fixed base, a threaded transmission rod for conveying materials is arranged in the screening barrel, a rotating shaft on one side of the threaded transmission rod penetrates through a side wall of the screening barrel and is connected with a transmission mechanism for driving the threaded transmission rod, a gap feeding mechanism is arranged on the screening barrel, the gap feeding mechanism is connected with the transmission mechanism, a screening mechanism for screening is arranged on one side of the bottom of the screening barrel, a separating mechanism for separating materials is arranged below the screening mechanism, and a limiting mechanism for limiting the screening mechanism is arranged above the screening mechanism.

[0008] Further, the transmission mechanism includes a partition plate and a second gear. The partition plate is fixedly installed on one side surface of the screening barrel. One side wall of the second gear is fixedly installed on the rotating shaft on one side of the threaded transmission rod. A motor is fixedly installed on the partition plate, and an output end of the motor is fixedly connected with one side wall of the second gear.

[0009] Furthermore, the gap feeding mechanism includes an inclined baffle and a feeding port. The feeding port is fixedly installed on the outer surface of the screening barrel. A rotating plate is rotatably installed in the feeding port. The inclined baffle is fixedly installed above the rotating shaft of the rotating plate. A guiding port is fixedly arranged at the top of the feeding port. A first ball head connecting rod is fixedly installed on one side wall of the rotating plate. A first gear is rotatably installed on the surface of the screening barrel. The first gear is meshed with the second gear. The size of the first gear is larger than that of the second gear. A second ball head connecting rod is fixedly installed on the first gear. A connecting support rod is fixedly installed between the movable end of the second ball head connecting rod and the first ball head connecting rod.

[0010] Furthermore, the separating mechanism includes a groove frame. The groove frame is fixedly installed on the fixed base. A horizontal groove is formed on one side wall of the groove frame. A sliding rod is fixedly installed in the groove frame. A separating plate is slidably arranged on the sliding rod. A stud is fixedly installed on one side wall of the separating plate. The stud is slidably arranged in the horizontal groove. A wing nut is threadedly connected to the stud.

[0011] Furthermore, the screening mechanism includes two groups of fixing blocks. The two groups of fixing blocks are fixedly installed on the two side walls of the screening barrel. The fixing blocks are symmetrically arranged. T-shaped grooves and through holes are formed on both groups of fixing blocks. Multiple inclined sliding plates are slidably arranged on the T-shaped grooves. Sieve meshes are installed on multiple inclined sliding plates. Slot holes are formed on the inclined sliding plates. The sizes and positions of the slot holes and the through holes are adapted to each other. The screening apertures of multiple sieve meshes are arranged in ascending order.

[0012] Furthermore, the limiting mechanism includes an elastic cord. The elastic cord is fixedly installed on the surface of the fixing block. The free end of the elastic cord is fixedly connected with a limiting pin. The size of the limiting pin is adapted to the through hole and the slot hole.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By the rotation of the transmission mechanism, the rotating plate is synchronously driven to open and close periodically. Through the periodic rotation of the gap feeding mechanism to control the feeding of coal, the problem of coal accumulation at the feeding port caused by excessive one-time feeding can be effectively avoided, improving the uniformity and controllability of feeding. At the same time, by periodically controlling the opening and closing of the gap feeding mechanism, the amount of coal entering the screening barrel can be controlled, avoiding the blockage phenomenon caused by excessive coal accumulation on the sieve mesh, which is beneficial to improving the screening efficiency. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2It is a schematic cross-sectional structure diagram of the gap feeding mechanism of the present utility model;

[0017] Figure 3 It is a schematic partial cross-sectional structure diagram of the present utility model;

[0018] Figure 4 It is a schematic partial structure diagram of the screening mechanism of the present utility model;

[0019] Figure 5 It is an enlarged schematic structure diagram of A of the present utility model;

[0020] Figure 6 It is an enlarged schematic structure diagram of B of the present utility model;

[0021] Reference numerals: 1, fixed base; 2, screening barrel; 3, limiting mechanism; 301, elastic cord; 302, limiting pin; 4, gap feeding mechanism; 401, guiding port; 402, inclined baffle; 403, rotating plate; 404, first ball head connecting rod; 405, connecting support rod; 406, first gear; 407, second ball head connecting rod; 408, feeding port; 5, transmission mechanism; 501, motor; 502, partition board; 503, second gear; 6, screening mechanism; 601, inclined slide plate; 602, screen; 603, slot hole; 604, T-shaped slot; 605, fixed block; 606, through hole; 7, separating mechanism; 701, separating plate; 702, wing nut; 703, stud; 704, transverse groove; 705, sliding rod; 706, slot frame; 8, threaded transmission rod. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the utility model product is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0026] As Figures 1 to 6 shown, a coal screening device for coal mining includes a fixed base 1, a screening barrel 2 is arranged on the fixed base 1, a threaded conveyor rod 8 for conveying materials is arranged in the screening barrel 2, a transmission mechanism 5 for driving the threaded conveyor rod 8 is connected to one side rotating shaft of the threaded conveyor rod 8 through a side wall of the screening barrel 2, a gap feeding mechanism 4 is arranged on the screening barrel 2, the gap feeding mechanism 4 is connected to the transmission mechanism 5, a screening mechanism 6 for screening is arranged on one side of the bottom of the screening barrel 2, a separating mechanism 7 for separating materials is arranged below the screening mechanism 6, and a limiting mechanism 3 for limiting the screening mechanism 6 is arranged above the screening mechanism 6; specifically, first, the coal to be screened is placed on the gap feeding mechanism 4, and then the screening mechanism 6 is combined according to different screening specifications, and at the same time, the separating mechanism 7 at the bottom is slidably adjusted to correspond to the screening mechanism 6 to prevent materials of different specifications from being mixed together during screening. Then, the transmission mechanism 5 rotates to drive the threaded conveyor rod 8 to rotate synchronously. The rotation of the transmission mechanism 5 synchronously drives the gap feeding mechanism 4 to perform periodic motion. By the periodic rotation of the gap feeding mechanism 4 to control the feeding of coal, the problem that coal accumulates at the material outlet and cannot fall can be effectively avoided. At the same time, by periodically controlling the opening and closing of the gap feeding mechanism 4, the amount of coal entering the screening barrel 2 can be controlled, avoiding the blockage phenomenon caused by excessive accumulation of coal on the screening mechanism 6, which is beneficial to improving the screening efficiency. Finally, the coal screened and discharged by the screening mechanism 6 is collected by a material box, and the screening mechanism 6 is limited by the limiting mechanism 3 to prevent the screening mechanism 6 from slipping during operation, improving the safety of the device.

[0027] As Figure 2As shown in the figure, the transmission mechanism 5 includes a partition plate 502 and a second gear 503. The partition plate 502 is fixedly installed on one side surface of the screening barrel 2. One side wall of the second gear 503 is fixedly installed on one side rotating shaft of the threaded transfer rod 8. A motor 501 is fixedly installed on the partition plate 502, and the output end of the motor 501 is fixedly connected to one side wall of the second gear 503. Specifically, the motor 501 rotates to drive the second gear 503, so that the threaded transfer rod 8 connected thereto rotates synchronously, and at the same time drives the intermittent feeding mechanism 4 to operate synchronously. The structure is simple, and different components are driven to operate by one power source, improving the energy utilization rate and reducing the cost.

[0028] As Figure 2 , Figure 3 shown, the intermittent feeding mechanism 4 includes an inclined baffle 402 and a feeding port 408. The feeding port 408 is fixedly installed on the outer surface of the screening barrel 2. A rotating plate 403 is rotatably installed in the feeding port 408. The inclined baffle 402 is fixedly installed above the rotating shaft of the rotating plate 403. A guiding port 401 is fixedly arranged at the top of the feeding port 408. One side wall of the rotating plate 403 is fixedly installed with a first ball head connecting rod 404. A first gear 406 is rotatably installed on the surface of the screening barrel 2. The first gear 406 is meshed with the second gear 503. The size of the first gear 406 is larger than that of the second gear 503. A second ball head connecting rod 407 is fixedly installed on the first gear 406. A connecting support rod 405 is fixedly installed between the movable end of the second ball head connecting rod 407 and the first ball head connecting rod 404. Specifically, the rotation of the second gear 503 drives the first gear 406 to rotate, so that the second ball head connecting rod 407 on the first gear 406 drives the connecting support rod 405 to pull the first ball head connecting rod 404 to drive the rotating plate 403 to rotate up and down and open and close along the feeding port 408, facilitating the feeding of coal on the guiding port 401. At the same time, due to the arrangement of the first ball head connecting rod 404 and the second ball head connecting rod 407, it is convenient for the connecting support rod 405 to turn during movement. The second ball head connecting rod 407 pulls the connecting support rod 405 through the circular motion on the first gear 406 to drive the rotating plate 403 to continuously open and close. During the movement of the rotating plate 403, through continuous closing, the periodic control of the coal feeding is realized, which can effectively avoid the problem that the coal accumulates on the guiding port 401 and the feeding port 408 and cannot fall, and at the same time, the amount of coal entering the screening barrel 2 can be controlled, avoiding the blockage caused by excessive coal accumulation and affecting the screening efficiency.

[0029] As Figure 1 , Figure 3 , Figure 6As shown in the figure, the separating mechanism 7 includes a groove frame 706 which is fixedly installed on the fixed base 1. A transverse groove 704 is formed on one side wall of the groove frame 706. A slide bar 705 is fixedly installed inside the groove frame 706. A separator plate 701 is slidably arranged on the slide bar 705. A stud 703 is fixedly installed on one side wall of the separator plate 701. The stud 703 is slidably arranged in the transverse groove 704. A wing nut 702 is threadedly connected to the stud 703. Specifically, by loosening the wing nut 702, then moving the separator plate 701 along the slide bar 705 to correspond to both sides of the discharge port of the screening mechanism 6, and then tightening the wing nut 702 to fix the separator plate 701, it is avoided that the materials of different specifications in adjacent groups are mixed together during screening, affecting the screening quality.

[0030] As Figure 3 , Figure 4 , Figure 5 shown in the figure, the screening mechanism 6 includes two fixed blocks 605 which are fixedly installed on both side walls of the screening barrel 2. The two fixed blocks 605 are symmetrically arranged. T-shaped grooves 604 and through holes 606 are formed on both of the two fixed blocks 605. Multiple inclined slide plates 601 are slidably arranged in the T-shaped grooves 604. Sieve meshes 602 are installed on multiple inclined slide plates 601. A slot hole 603 is formed on the inclined slide plate 601. The size and position of the slot hole 603 are adapted to those of the through hole 606. The screening apertures of multiple sieve meshes 602 are arranged in ascending order. Specifically, by sequentially sliding and inserting the inclined slide plates 601 and the sieve meshes 602 with different screening apertures in ascending order into the T-shaped grooves 604 on the fixed blocks 605, it is convenient for the screw conveyor rod 8 to drive the coal to the sieve meshes 602 with different screening apertures for screening when rotating, and then it is discharged through the inclined slide plates 601 arranged obliquely below the sieve meshes 602 and collected through the material box. The slidably arranged inclined slide plates 601 facilitate the replacement of the sieve meshes 602 on the inclined slide plates 601 according to different screening requirements of different specifications by personnel, improving the convenience of operation.

[0031] As Figure 4 , Figure 5 shown in the figure, the limiting mechanism 3 includes an elastic cord 301 which is fixedly installed on the surface of the fixed block 605. The free end of the elastic cord 301 is fixedly connected with a limiting pin 302. The size of the limiting pin 302 is adapted to the through hole 606 and the slot hole 603. Specifically, by inserting the limiting pin 302 into the through hole 606 and the slot hole 603, the limiting of the inclined slide plate 601 is realized, avoiding the inclined slide plate 601 from slipping off during operation and improving the safety of the device. The connected elastic cord 301 prevents the limiting pin 302 from being lost and improves the convenience during use.

[0032] In summary: First, place the coal mine to be screened on the gap feeding mechanism 4. Subsequently, combine the screening mechanism 6 according to different screening specifications, and at the same time, slide and adjust the bottom separation mechanism 7 to make it correspond to the screening mechanism 6 to avoid mixing of materials of different specifications during screening. Then, drive the threaded transfer rod 8 to rotate synchronously through the rotation of the transmission mechanism 5. The rotation of the transmission mechanism 5 drives the gap feeding mechanism 4 to perform periodic motion synchronously. By controlling the coal feeding through the periodic rotation of the gap feeding mechanism 4, the problem that coal accumulates at the material outlet and cannot fall can be effectively avoided. At the same time, by periodically controlling the opening and closing of the gap feeding mechanism 4, the amount of coal entering the screening barrel 2 can be controlled, avoiding the blockage phenomenon caused by excessive accumulation of coal on the screening mechanism 6, which is beneficial to improving the screening efficiency. Finally, collect the coal screened and discharged by the screening mechanism 6 through the material box, and limit the screening mechanism 6 through the limiting mechanism 3 to avoid the screening mechanism 6 slipping off during operation and improve the safety of the device.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal mine screening device for coal mine mining, characterized in that, It includes a fixed base (1), on which a screening barrel (2) is provided. Inside the screening barrel (2), there is a threaded conveying rod (8) for conveying materials. One side shaft of the threaded conveying rod (8) penetrates through one side wall of the screening barrel (2) and is connected to a transmission mechanism (5) for driving the threaded conveying rod (8). A gap feeding mechanism (4) is provided on the screening barrel (2), and the gap feeding mechanism (4) is connected to the transmission mechanism (5). On one side of the bottom of the screening barrel (2), there is a screening mechanism (6) for screening. Below the screening mechanism (6), there is a separation mechanism (7) for separating materials. Above the screening mechanism (6), there is a limiting mechanism (3) for limiting the screening mechanism (6).

2. The coal screening device for coal mine exploitation according to claim 1, characterized in that, The transmission mechanism (5) includes a partition plate (502) and a second gear (503). The partition plate (502) is fixedly installed on one side surface of the screening barrel (2). One side wall of the second gear (503) is fixedly installed on one side shaft of the threaded conveying rod (8). A motor (501) is fixedly installed on the partition plate (502), and the output end of the motor (501) is fixedly connected to one side wall of the second gear (503).

3. A coal screening device for coal mining according to claim 2, characterized in that, The gap feeding mechanism (4) includes an inclined block (402) and a feeding port (408). The feeding port (408) is fixedly installed on the outer surface of the screening barrel (2). A rotating plate (403) is rotatably installed inside the feeding port (408). The inclined block (402) is fixedly installed above the shaft of the rotating plate (403). A guiding port (401) is fixedly provided at the top of the feeding port (408). One side wall of the rotating plate (403) is fixedly installed with a first ball head connecting rod (404). A first gear (406) is rotatably installed on the surface of the screening barrel (2). The first gear (406) is meshed with the second gear (503). The size of the first gear (406) is larger than that of the second gear (503). A second ball head connecting rod (407) is fixedly installed on the first gear (406). A connecting support rod (405) is fixedly installed between the movable end of the second ball head connecting rod (407) and the first ball head connecting rod (404).

4. A coal screening device for coal mining according to claim 3, characterized in that, The separation mechanism (7) includes a groove frame (706). The groove frame (706) is fixedly installed on the fixed base (1). A horizontal groove (704) is opened on one side wall of the groove frame (706). A sliding rod (705) is fixedly installed inside the groove frame (706). A separation plate (701) is slidably arranged on the sliding rod (705). One side wall of the separation plate (701) is fixedly installed with a stud (703). The stud (703) is slidably arranged in the horizontal groove (704). A wing nut (702) is threadedly connected to the stud (703).

5. A coal screening device for coal mining according to claim 1, characterized in that, The screening mechanism (6) includes two groups of fixing blocks (605), and the two groups of fixing blocks (605) are fixedly installed on the two side walls of the screening barrel (2). The fixing blocks (605) are symmetrically arranged. T-shaped grooves (604) and through holes (606) are formed in both groups of fixing blocks (605). A plurality of inclined sliding plates (601) are slidably arranged on the T-shaped grooves (604). A screen (602) is installed on each of the plurality of inclined sliding plates (601). A slot hole (603) is formed in the inclined sliding plate (601), and the size and position of the slot hole (603) are adapted to those of the through hole (606). The screening apertures of the plurality of screens (602) are arranged in ascending order.

6. A coal screening device for coal mine exploitation according to claim 5, characterized in that, The limiting mechanism (3) includes an elastic cord (301). The elastic cord (301) is fixedly installed on the surface of the fixing block (605). The free end of the elastic cord (301) is fixedly connected with a limiting pin (302). The size of the limiting pin (302) is adapted to the through hole (606) and the slot hole (603).

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