A coal mine screening device for coal mining

Abstract

The utility model relates to the technical field of coal mining, concretely to a coal screening device for coal mining, including the drum, the one side of drum is provided with the plugging device, the plugging device includes sieve hole no. 1, a plurality of sieve hole no. 1 all are set up in the lateral surface of drum. The coal screening device for coal mining, through adding the plugging device, sieve hole no. 1 is responsible for screening small size coal mine and coal mine slag, sieve hole no. 2 is responsible for screening large size coal mine, the flap can plug sieve hole no. 2, the side of flap is rotatably connected with drum, and the movable ring follows the rotation shaft and the rotation of drum, when hydraulic push rod no. 1 drives movable ring to slide, articulated rod no. 2 moves, because articulated rod no. 1 is fixed length, articulated rod no. 1 will pull up the flap, thereby makes sieve hole no. 2 open, and screens large size coal mine, and the different size coal mine is screened step by step without conveying in batches, and the conveying pressure is relieved, and the accuracy of screening is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically a coal screening device used in coal mining. Background Technology

[0002] Coal screening equipment plays a crucial role in the coal mining process, mainly used to separate coal of different qualities for subsequent processing and utilization. Coal screening equipment is divided into drum screens, vibrating screens, and chute screens, etc. Different types of screening equipment can be selected for coal mines with different production conditions.

[0003] Currently, the coal screening equipment used in coal mines is not precise enough, especially drum screening equipment, where small-sized coal particles fall through the screen holes of large-sized coal particles, reducing the accuracy of screening. Utility Model Content

[0004] The purpose of this utility model is to provide a coal screening device for coal mining, so as to solve the problem mentioned in the background art that the coal screening is not accurate enough, especially the drum screening device, where small coal particles fall out of the screen holes of large coal particles, which reduces the accuracy of screening. To achieve the above objectives, this utility model provides the following technical solution: A coal screening device for coal mining, comprising a drum, a blocking device on one side of the drum, the blocking device including a first screen hole, a plurality of first screen holes being formed on the side surface of the drum, a plurality of second screen holes being formed on the side surface of the drum, a plurality of flip covers being movably connected to the side surface of the drum, a hinge rod being movably connected to the top of the flip covers, a hinge rod being movably connected to the other end of the first hinge rod, a movable ring being fixedly connected to the other end of the second hinge rod, a rotating shaft being fixedly connected to one side of the drum, a plurality of limiting grooves being formed on the side surface of the rotating shaft, a plurality of limiting blocks being fixedly connected inside the movable ring and the limiting blocks being adapted to the limiting grooves, a hydraulic push rod being fixedly connected inside the limiting grooves, this coal screening device for coal mining. By adding a blocking device, screen hole one is responsible for screening small-sized coal ore and coal slag, while screen hole two is responsible for screening large-sized coal ore. The flip cover can block screen hole two. One side of the flip cover is movably connected to the roller and can be flipped. The top of the flip cover is movably connected to hinge rod one, which is in turn movably connected to hinge rod two. The other end of hinge rod two is fixedly connected to a movable ring. The limiting block one inside the movable ring, together with the limiting groove, restricts the rotation of the movable ring. The limiting block one is fixedly connected to the rotating shaft through hydraulic push rod one. The movable ring rotates with the rotating shaft and the roller. When the hydraulic push rod one drives the movable ring to slide, the hinge rod two moves. Since the length of hinge rod one is fixed, hinge rod one will pull up the flip cover, thereby opening screen hole two and screening large-sized coal ore. By screening coal ore of different sizes in steps, there is no need to transport them in batches, which alleviates the conveying pressure and improves the accuracy of screening.

[0005] More preferably, a connecting assembly is provided on one side of the roller. The connecting assembly includes a fixing block 1, a plurality of fixing blocks 1 are fixedly connected to the side surface of the roller, an arc block 1 is movably connected to one side of the fixing block 1 and the arc block 1 is fixedly connected to the flip cover, two arc blocks 2 are fixedly connected to the top of the flip cover, a rotating rod is fixedly connected to one side of the arc block 2, a movable block is movably connected to the other end of the rotating rod and the movable block is fixedly connected to the hinge rod 1, an arc block 3 is fixedly connected to the other end of the hinge rod 1, and a connecting block is fixedly connected to one end of the hinge rod 2.

[0006] More preferably, the arc block three has a connecting hole inside, and the opposite sides of the connecting block have matching holes, with a movable bolt movably connected inside the matching holes.

[0007] More preferably, a discharge assembly is provided on one side of the drum, and a connecting pipe is fixedly connected to one side of the drum. The discharge assembly includes discharge ports, and a plurality of discharge ports are opened on the side surface of the drum. A baffle is movably connected inside the discharge port. A limiting edge is fixedly connected to the side surface of the baffle. A bent rod is fixedly connected to the top of the baffle, and a hinge block is fixedly connected to the other end of the bent rod. A second fixing block is movably connected to one side of the hinge block, and the second fixing block is fixedly connected to the connecting pipe. This type of coal mine screening device, by adding the discharge assembly, can screen extra-large coal samples at the discharge port. In this coal mine screening system, to prevent clogging of the drum screen, a baffle can block the discharge port. A limiting edge prevents the baffle from getting stuck in the discharge port, improving stability. The bent rod is an irregular V-shape, with one end connected to a connecting pipe via a hinge block and a fixed block. The bent rod can be flipped, and a hydraulic push rod drives a moving ring to move. The limiting block and limiting groove enhance stability, and the moving ring also rotates with the drum. When the moving ring moves to one side, the outer side of the moving ring supports the expanding bent rod, causing the bent rod to expand outward and open the discharge port. This improves the step-by-step screening process and the accuracy of screening, while also preventing clogging and enhancing stability.

[0008] More preferably, the side surface of the connecting pipe is provided with a plurality of limiting grooves II, a hydraulic push rod II is fixedly connected inside the limiting grooves II, the other end of the hydraulic push rod II is fixedly connected to a limiting block II, and a movable ring is fixedly connected to the top of the limiting block II.

[0009] More preferably, a support block is movably connected to one side of the connecting pipe and the support block is movably connected to the rotating shaft, and a funnel is fixedly connected to the other side of the support block.

[0010] More preferably, a rotary motor is fixedly connected to one side of the support block, and a reinforcing block is fixedly connected to the opposite side of the support block.

[0011] More preferably, the bottom of the roller is provided with a spiral block, two power rods are movably connected to one inner wall of the spiral block, a conveyor belt is movably connected to the side surface of the power rods, and several auxiliary rods are movably connected to one inner wall of the spiral block.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the coal screening device used in coal mining employs a blocking device. Screen hole one is responsible for screening small-sized coal and slag, while screen hole two is responsible for screening large-sized coal. A flip cover can block screen hole two. One side of the flip cover is movably connected to a roller and can be flipped. The top of the flip cover is movably connected to hinge rod one, which in turn is movably connected to hinge rod two. The other end of hinge rod two is fixedly connected to a movable ring. A limiting block one inside the movable ring, along with a limiting groove, restricts the rotation of the movable ring. The limiting block one is fixedly connected to a rotating shaft via a hydraulic push rod one. The movable ring rotates with the rotating shaft and the roller. When the hydraulic push rod one drives the movable ring to slide, hinge rod two moves. Since the length of hinge rod one is fixed, it pulls up the flip cover, thereby opening screen hole two and screening large-sized coal. By screening coal of different sizes in steps, there is no need for batch transmission, reducing transmission pressure and improving screening accuracy.

[0013] In this utility model, the coal screening device used in coal mining, by adding a discharge component, allows the discharge port to screen oversized coal and prevents the drum screen from clogging. The baffle can block the discharge port, and the limiting edge prevents the baffle from sinking into the discharge port, improving stability. The bent rod is an irregular V-shape, and one end of the bent rod is movably connected to the connecting pipe through a hinge block and a fixed block two. The bent rod can be flipped, and the hydraulic push rod two drives the moving ring to move. The limiting block two and the limiting groove two improve stability, and the moving ring also rotates with the drum. When the moving ring moves to one side, the outer side of the moving ring will support the expanding bent rod, thereby causing the bent rod to expand outward and open the discharge port, improving the step-by-step screening process and the screening accuracy, and also preventing clogging and improving stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram showing the disassembled parts of this utility model; Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of a partial structure of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of a partial structure of the present invention. Figure 3 .

[0015] In the diagram: 1. Drum; 2. Blocking device; 201. Screen hole one; 202. Screen hole two; 203. Flip cover; 204. Hinge rod one; 205. Hinge rod two; 206. Movable ring; 207. Rotating shaft; 208. Limiting groove one; 209. Limiting block one; 210. Hydraulic push rod one; 3. Connecting assembly; 301. Fixed block one; 302. Arc block one; 303. Arc block two; 304. Rotating rod; 305. Movable block; 306. Arc block three; 307. Connecting block; 308. 1. Connecting hole; 309. Alignment hole; 310. Movable bolt; 4. Unloading assembly; 401. Unloading port; 402. Baffle; 403. Limiting edge; 404. Bending rod; 405. Hinge block; 406. Fixed block two; 407. Moving ring; 408. Limiting block two; 409. Limiting groove two; 410. Hydraulic push rod two; 5. Connecting pipe; 6. Support block; 7. Funnel; 8. Rotary motor; 9. Reinforcing block; 10. U-shaped block; 11. Power rod; 12. Conveyor belt; 13. Auxiliary rod. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1 - Figure 6 A coal screening device for coal mining includes a drum 1. A blocking device 2 is provided on one side of the drum 1. The blocking device 2 includes a screen hole 201. A plurality of screen holes 201 are opened on the side surface of the drum 1. A plurality of screen holes 202 are opened on the side surface of the drum 1. A plurality of flip covers 203 are movably connected to the side surface of the drum 1. A hinge rod 204 is movably connected to the top of the flip cover 203. A hinge rod 205 is movably connected to the other end of the hinge rod 204. A movable ring 206 is fixedly connected to the other end of the hinge rod 205. A rotating shaft 207 is fixedly connected to one side of the drum 1. A plurality of limiting grooves 208 are opened on the side surface of the rotating shaft 207. A plurality of limiting blocks 209 are fixedly connected inside the movable ring 206 and the limiting blocks 209 are adapted to the limiting grooves 208. A hydraulic push rod 210 is fixedly connected inside the limiting grooves 208.

[0018] In this embodiment, as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, a connecting component 3 is provided on one side of the roller 1. The connecting component 3 includes a fixing block 301. Several fixing blocks 301 are fixedly connected to the side surface of the roller 1. An arc block 302 is movably connected to one side of the fixing block 301 and is fixedly connected to the flip cover 203. Two arc blocks 303 are fixedly connected to the top of the flip cover 203. A rotating rod 304 is fixedly connected to one side of the arc block 303. A movable block 305 is movably connected to the other end of the rotating rod 304 and is fixedly connected to the hinge rod 204. An arc block 306 is fixedly connected to the other end of the hinge rod 204. A connecting block 307 is fixedly connected to one end of the hinge rod 205.

[0019] In this embodiment, as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the arc block 306 has a connecting hole 308 inside, and the opposite side of the connecting block 307 has a matching hole 309. The matching hole 309 is movably connected to the inside of the matching hole 309.

[0020] In this embodiment, as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, a discharge assembly 4 is provided on one side of the roller 1, and a connecting pipe 5 is fixedly connected to one side of the roller 1. The discharge assembly 4 includes a discharge port 401. Several discharge ports 401 are opened on the side surface of the roller 1. A baffle 402 is movably connected inside the discharge port 401. A limiting edge 403 is fixedly connected to the side surface of the baffle 402. A bent rod 404 is fixedly connected to the top of the baffle 402. A hinge block 405 is fixedly connected to the other end of the bent rod 404. A fixing block 406 is movably connected to one side of the hinge block 405, and the fixing block 406 is fixedly connected to the connecting pipe 5.

[0021] In this embodiment, as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the side surface of the connecting pipe 5 is provided with several limiting grooves 409. A hydraulic push rod 410 is fixedly connected inside the limiting groove 409. The other end of the hydraulic push rod 410 is fixedly connected to a limiting block 408. A moving ring 407 is fixedly connected to the top of the limiting block 408.

[0022] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, a support block 6 is movably connected to one side of the connecting pipe 5 and the support block 6 is movably connected to the rotating shaft 207. A funnel 7 is fixedly connected to the other side of the support block 6.

[0023] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, a rotary motor 8 is fixedly connected to one side of the support block 6, and a reinforcing block 9 is fixedly connected to the opposite side of the support block 6.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, a spiral block 10 is provided at the bottom of the roller 1. Two power rods 11 are movably connected to one inner wall of the spiral block 10. A conveyor belt 12 is movably connected to the side surface of the power rods 11. Several auxiliary rods 13 are movably connected to one inner wall of the spiral block 10.

[0025] The method of use and advantages of this utility model: The coal screening device used in coal mining operates as follows: In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, screen hole 201 is responsible for screening small-sized coal ore and coal slag, and screen hole 202 is responsible for screening large-sized coal ore. A flap 203 can block screen hole 202. One side of the flap 203 is movably connected to roller 1 and can be flipped. The top of the flap 203 is movably connected to hinge rod 204, which in turn is movably connected to hinge rod 205. The other end of hinge rod 205 is fixedly connected to a movable ring 206. The limiting block 209 and limiting groove 208 inside the movable ring 206 restrict the rotation of the movable ring 206. The limiting block 209 is fixedly connected to the rotating shaft 207 via the hydraulic push rod 210. The movable ring 206 rotates with the rotating shaft 207 and the drum 1. When the hydraulic push rod 210 drives the movable ring 206 to slide, the hinge rod 205 moves. Since the length of the hinge rod 204 is fixed, the hinge rod 204 will pull up the flip cover 203, thereby opening the screen hole 202 to screen large-sized coal. By screening coal of different sizes in steps, there is no need to transport them in batches, which relieves the transmission pressure and improves the accuracy of screening.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal screening device for coal mining, comprising a drum (1), characterized in that: A blocking device (2) is provided on one side of the roller (1). The blocking device (2) includes a sieve hole (201). Several sieve holes (201) are opened on the side surface of the roller (1). Several sieve holes (202) are opened on the side surface of the roller (1). Several flip covers (203) are movably connected to the side surface of the roller (1). A hinge rod (204) is movably connected to the top of the flip cover (203). A hinge rod (204) is movably connected to the other end of the hinge rod (204). 205), the other end of the hinge rod (205) is fixedly connected to a movable ring (206), one side of the roller (1) is fixedly connected to a rotating shaft (207), the side surface of the rotating shaft (207) is provided with several limiting grooves (208), the movable ring (206) is fixedly connected to several limiting blocks (209) and the limiting blocks (209) are adapted to the limiting grooves (208), and the limiting grooves (208) are fixedly connected to a hydraulic push rod (210).

2. The coal screening device for coal mining according to claim 1, characterized in that: A connecting component (3) is provided on one side of the roller (1). The connecting component (3) includes a fixing block (301). Several fixing blocks (301) are fixedly connected to the side surface of the roller (1). An arc block (302) is movably connected to one side of the fixing block (301) and the arc block (302) is fixedly connected to the flip cover (203). Two arc blocks (303) are fixedly connected to the top of the flip cover (203). A rotating rod (304) is fixedly connected to one side of the arc block (303). A movable block (305) is movably connected to the other end of the rotating rod (304) and the movable block (305) is fixedly connected to the hinge rod (204). An arc block (306) is fixedly connected to the other end of the hinge rod (204). A connecting block (307) is fixedly connected to one end of the hinge rod (205).

3. The coal screening device for coal mining according to claim 2, characterized in that: The arc block three (306) has a connecting hole (308) inside, and the connecting block (307) has a matching hole (309) on the opposite side. The matching hole (309) is movably connected to a movable bolt (310).

4. A coal screening device for coal mining according to claim 2, characterized in that: A discharge assembly (4) is provided on one side of the roller (1), and a connecting pipe (5) is fixedly connected to one side of the roller (1). The discharge assembly (4) includes a discharge port (401). Several discharge ports (401) are opened on the side surface of the roller (1). A baffle (402) is movably connected inside the discharge port (401). A limiting edge (403) is fixedly connected to the side surface of the baffle (402). A bent rod (404) is fixedly connected to the top of the baffle (402). A hinge block (405) is fixedly connected to the other end of the bent rod (404). A fixing block two (406) is movably connected to one side of the hinge block (405), and the fixing block two (406) is fixedly connected to the connecting pipe (5).

5. A coal screening device for coal mining according to claim 4, characterized in that: The side surface of the connecting pipe (5) is provided with several limiting grooves (409). A hydraulic push rod (410) is fixedly connected inside the limiting groove (409). The other end of the hydraulic push rod (410) is fixedly connected to a limiting block (408). A moving ring (407) is fixedly connected to the top of the limiting block (408).

6. A coal screening device for coal mining according to claim 4, characterized in that: One side of the connecting pipe (5) is movably connected to a support block (6) and the support block (6) is movably connected to a rotating shaft (207). The other side of the support block (6) is fixedly connected to a funnel (7).

7. A coal screening device for coal mining according to claim 6, characterized in that: A rotary motor (8) is fixedly connected to one side of the support block (6), and a reinforcing block (9) is fixedly connected to the opposite side of the support block (6).

8. A coal screening device for coal mining according to claim 1, characterized in that: The bottom of the roller (1) is provided with a spiral block (10), and two power rods (11) are movably connected to one side of the inner wall of the spiral block (10). A conveyor belt (12) is movably connected to the side surface of the power rod (11), and several auxiliary rods (13) are movably connected to one side of the inner wall of the spiral block (10).

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