Coal cinder screening device for coal mine production

Abstract

The invention relates to the technical field of coal mine production, in particular to a coal cinder screening device for coal mine production, which comprises a screening box, a fixing frame is fixedly mounted at the bottom in the screening box through bolts, a T-shaped fixing column is fixedly mounted in the fixing frame, and the top of the T-shaped fixing column is movably sleeved with a fixing ring. An arc-shaped plate is fixedly installed on the periphery of the top of the fixing ring, a screening disc for screening coal cinder is arranged on the top of the arc-shaped plate, and a rotating structure for moving the screening disc is arranged in the fixing frame. The fixing ring drives the screening disc to rotate and lift on the T-shaped fixing column through the arc-shaped plate, coal cinder in the screening disc is shaken and scattered during lifting rotation, the coal cinder with large and small particles is shaken and turned up again in the screening holes, screening is completed again through the screening disc, and the screening efficiency is improved. In the descending and rotating process, coal cinder in the screening disc is twisted and rotated to achieve the screening effect, the screening effect is improved in reciprocating twisting and rotating, descending knocking vibration is achieved in cooperation with an arc-shaped block, and the screening efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine production, in particular to a coal slag screening device used in coal mine production. Background Art

[0002] Coal slag, a type of industrial solid waste, is the waste residue discharged from coal-fired power plants, industrial and civilian boilers and other equipment, also known as slag; the main components are silicon dioxide, aluminum oxide, iron oxide, calcium oxide, magnesium oxide, etc.; depending on the composition, it can be used to make cement, bricks and refractory materials, etc.; some can be used to make alumina or refine rare metals such as gallium and germanium.

[0003] Under the existing technology, vibration is usually used to complete the screening of coal slag. The vibration includes horizontal reciprocating vibration and up and down vibration driven by a vibration motor. When vibrating left and right, firstly, the larger coal slag will block the screening holes, resulting in the inability to screen out the fine coal slag above, and the screening effect is poor. Secondly, the horizontal reciprocating motion is relatively regular, resulting in the fine coal slag being filled into the gaps of the larger coal slag. When using the vibration motor to vibrate up and down, firstly, the vibration amplitude of the vibration motor for the screening equipment is relatively low, and large pieces of coal slag will still be deposited at the bottom of the screen due to their large mass. This will also cause the fine coal slag mixed in the gap between the two larger coal slag blocks to be unable to be screened out. Secondly, the vibration amplitude is large, and the coal slag will be raised to cause large-scale pollution to the surrounding environment. At the same time, the large amount of coal slag dust that overflows will cause losses. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a coal slag screening device for coal mine production.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a screening box, a fixing frame is fixedly installed at the bottom of the screening box by bolts, a T-shaped fixing column is fixedly installed inside the fixing frame, a fixing ring is movably sleeved on the top of the T-shaped fixing column, an arc-shaped plate is fixedly installed around the top of the fixing ring, a screening plate for screening coal slag is arranged on the top of the arc-shaped plate, a rotating structure for moving the screening plate is arranged in the fixing frame, and the rotating structure includes: A fixed rotating shaft is movably arranged on one side of the fixed frame, and supporting rotating shafts are movably arranged on the other three sides of the fixed frame. Fixed plates are fixedly installed around the fixed ring, and the fixed plate is movably connected to a fixed block through a limiting shaft. A rotating plate is fixedly installed at one end of the fixed rotating shaft and the supporting rotating shaft close to the fixed ring, and a T-shaped rotating column is fixedly installed on the rotating plate, and the T-shaped rotating column movably passes through the fixed block.

[0006] The fixed frame is fixedly mounted with support plates on both sides of the fixed rotating shaft, the bottom of the support plate is connected with a movable plate via a telescopic spring, the support rotating shaft is fixedly mounted with a rotating cam at one end of the support plate, a U-shaped seat is fixedly mounted on the top of the movable plate, the rotating cam and the U-shaped seat are movably opposed to each other, and arc blocks for vibrating the screening plate are connected to the two ends of the top of the movable plate via movable rods.

[0007] A base plate is fixedly installed at the bottom of the screening plate, an L-shaped guide frame for discharging coal slag is fixedly installed on the base plate, a discharging baffle is movably provided at the bottom of the L-shaped guide frame, and a pushing structure for reciprocatingly pushing the discharging baffle is provided in the screening box.

[0008] As a preferred technical solution of the present invention, the fixed frame is fixedly installed with a motor frame by bolts at one end of the fixed rotating shaft, a driving motor is fixedly installed with bolts on the top of the motor frame, a first pulley is connected to the output end of the driving motor, a reducer is fixedly installed with bolts on one side of the top of the driving motor, the fixed rotating shaft is installed through the reducer, a second pulley is installed on the fixed rotating shaft, and a transmission belt is connected between the second pulley and the first pulley.

[0009] The pushing structure includes a rotating disk and a U-shaped push rod. A first bevel gear is arranged on the side of the T-shaped fixed column away from the fixed rotating shaft, and the first bevel gear is fixedly installed on the supporting rotating shaft. A connecting rotating shaft is connected to the top of the screening box through a bearing, and a second bevel gear movably meshed with the first bevel gear is fixedly installed at the bottom of the connecting rotating shaft, and the rotating disk is fixedly installed at the bottom end of the connecting rotating shaft.

[0010] The bottom of the rotating disk is connected with a hinged rod through a T-shaped positioning ring, and the hinged rod is movably connected with the U-shaped push rod through a hinge, and the U-shaped push rod penetrates the screening box and movably abuts against the discharge baffle.

[0011] As a preferred technical solution of the present invention, the support plate is provided with a support groove, the rotating cam moves in the support groove, a movable hole is provided on the top of the screening box, the bottom of the movable rod movably passes through the two ends of the support plate, the top of the movable rod movably passes through the movable hole, and a telescopic support rod is fixedly installed between the support plate and the movable plate in the telescopic spring.

[0012] A plurality of screening holes are evenly arranged at the bottom of the screening plate. The screening plate and the base plate are inclined structures. A conical base block is fixedly installed at the bottom of the base plate by bolts, and the bottom of the conical base block is kept level with the screening box.

[0013] As a preferred technical solution of the present invention, the screening plate is fixedly installed with a discharge hopper, and the discharge hopper is fixedly installed with an L-shaped connecting plate at one end close to the screening plate by bolts, and the L-shaped connecting plate is fixedly installed with an electric telescopic rod by bolts, and an arc-shaped baffle for blocking the discharge hopper is fixedly installed at the bottom of the electric telescopic rod by bolts.

[0014] The screening box is provided with a connecting hole at one end away from the driving motor, the U-shaped push rod moves in the connecting hole, a limit plate is fixedly installed in the connecting hole by bolts, a T-shaped slot is provided on the limit plate, a T-shaped slider is slidably connected in the T-shaped slot, and the top of the T-shaped slider is fixedly installed on the U-shaped push rod.

[0015] As a preferred technical solution of the present invention, a connecting frame connected to the discharge baffle is fixedly installed at the bottom of the L-shaped material guide frame by bolts, a compression spring is fixedly installed at the end of the connecting frame away from the U-shaped push rod by bolts, and a connecting block movable in the connecting frame is fixedly installed on the top of the compression spring.

[0016] A connecting groove is provided at the bottom of the connecting frame, and the bottom of the connecting block passes through the connecting groove and is installed on the top of the discharge baffle. The top of the screening box is connected to a flip plate through a hinge joint, and a flip hole is provided on the flip plate, and the arc plate moves in the flip hole.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects: The rotating plate on the fixed shaft rotates the fixed ring connected to the fixed plate through the T-shaped rotating column, the fixed block and the limit shaft. The T-shaped rotating column completes the rotation movement on the outside of the T-shaped fixed column. The fixed ring drives the screening disk through the arc plate on the T-shaped fixed column to realize rotating and lifting movement. During the ascending rotation, the coal slag in the screening disk is shaken and broken up, and the large and small particles of coal slag are shaken and turned up again in the screening holes, and the screening is completed again by the screening disk. During the descending rotation, the coal slag in the screening disk is twisted and rotated to achieve the screening effect, and the screening effect is improved during the reciprocating twisting rotation. The arc block is cooperated to realize the descending knocking vibration to improve the screening efficiency.

[0018] The rotating plate on the supporting shaft rotates synchronously on the limit shaft, fixed block and T-shaped rotating column through the fixed ring and the fixed plate. The supporting shaft completes the vibration and knocking of the arc block on the screening plate through the rotating cam and the telescopic spring. The screening plate only shakes to break up large and small particles of coal slag after rising, and knocks and vibrates to screen the coal slag in the holes after falling, thereby improving the screening efficiency.

[0019] After the screening disc completes the knocking vibration during the descent, the first bevel gear on the supporting shaft cooperates with the rotating disc and the U-shaped push rod to complete the timed discharging of the L-shaped guide rack through the second bevel gear and the connecting shaft. The U-shaped push rod pushes the discharging baffle that moves to the lowest position, and the screened coal slag in the base plate is discharged in a timely and quantitative manner to facilitate subsequent collection. At the same time, the coal slag will not overflow with dust, which can protect the environment and save resources at the same time.

[0020] During the rotation process, the screening plate cooperates with the fixed ring and T-shaped fixed column to complete the lifting movement, screening and shaking the coal slag in the screening plate, and can also shake and knock to vibrate. It has powerful functions and greatly improves the screening effect. The screening and discharge of coal slag are completed through the L-shaped guide rack and the discharge hopper. The discharge effect is good. The rotating screening plate and base plate improve the discharge efficiency and the design is ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the screening box of the present invention; Figure 3 It is a schematic diagram of the internal structure of the screening box of the present invention; Figure 4 This is a schematic diagram of the support plate connection structure of the present invention; Figure 5 It is a structural schematic diagram of the driving motor of the present invention; Figure 6 This is a schematic diagram of the T-shaped fixing column connection structure of the present invention; Figure 7 This is a schematic diagram of the fixing ring connection structure of the present invention; Figure 8 It is a structural schematic diagram of the screening disk of the present invention; Fig. 9 It is a structural schematic diagram of the base plate of the present invention; Fig.10 This is a schematic diagram of the bottom structure of the L-shaped material guide frame of the present invention; Fig.11 This is a schematic diagram of the connection structure of the rotating disk of the present invention; Fig.12 It is a schematic diagram of the connection structure of the limit plate of the present invention; Fig.13 It is a schematic diagram of the structure of the telescopic support rod of the present invention.

[0022] Among them: 10, screening box; 11, motor frame; 12, driving motor; 13, first pulley; 14, reducer; 15, second pulley; 16, driving belt; 17, movable hole; 18, connecting hole; 19, flip hole; 20, fixed frame; 21, fixed shaft; 22, supporting shaft; 23, fixed plate; 24, limiting shaft; 25, fixed block; 26, rotating plate; 27, T-shaped rotating column; 30, T-shaped fixed column; 31, fixed ring; 32, arc plate; 40, screening plate; 41, base plate; 42, L-shaped guide frame; 43, discharge baffle; 44, U-shaped push rod; 45, screening hole; 46, conical bottom Seat block; 47, discharge hopper; 48, L-shaped connecting plate; 49, electric telescopic rod; 50, support plate; 51, telescopic spring; 52, movable plate; 53, rotating cam; 54, U-shaped seat; 55, movable rod; 56, arc block; 57, supporting groove; 58, telescopic support rod; 60, rotating disk; 61, limit plate; 62, first bevel gear; 63, connecting shaft; 64, second bevel gear; 65, hinged rod; 66, T-shaped positioning ring; 67, hinged part; 68, T-shaped slide groove; 69, T-shaped slider; 70, arc baffle; 80, connecting frame; 81, compression spring; 82, connecting block; 83, connecting groove; 90, flip plate. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0024] Embodiment: Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.10 As shown, it includes a screening box 10, a fixing frame 20 is fixedly installed at the bottom of the screening box 10 by bolts, a T-shaped fixing column 30 is fixedly installed inside the fixing frame 20, a fixing ring 31 is movably sleeved on the top of the T-shaped fixing column 30, an arc plate 32 is fixedly installed around the top of the fixing ring 31, a screening plate 40 for screening coal slag is arranged on the top of the arc plate 32, a rotating structure for moving the screening plate 40 is arranged in the fixing frame 20, and the rotating structure includes: A fixed shaft 21 is movably arranged on one side of the fixed frame 20, and supporting shafts 22 are movably arranged on the other three sides of the fixed frame 20. Fixed plates 23 are fixedly installed around the fixed ring 31, and the fixed plate 23 is movably connected to a fixed block 25 through a limiting shaft 24. The fixed shaft 21 and the supporting shaft 22 are fixedly installed with a rotating plate 26 at one end close to the fixed ring 31, and the rotating plate 26 is fixedly installed with a T-shaped rotating column 27, and the T-shaped rotating column 27 movably runs through the fixed block 25.

[0025] The fixed frame 20 has support plates 50 fixedly installed on both sides of the fixed shaft 21, the bottom of the support plate 50 is connected to a movable plate 52 through a telescopic spring 51, the support shaft 22 has a rotating cam 53 fixedly installed at one end of the support plate 50, a U-shaped seat 54 fixedly installed on the top of the movable plate 52, the rotating cam 53 and the U-shaped seat 54 are movably opposed to each other, and arc blocks 56 for vibrating the screening plate 40 are connected to the top ends of the movable plate 52 through movable rods 55.

[0026] A base plate 41 is fixedly installed at the bottom of the screening plate 40, and an L-shaped guide frame 42 for discharging coal slag is fixedly installed on the base plate 41. A discharge baffle 43 is movably provided at the bottom of the L-shaped guide frame 42, and a pushing structure for reciprocatingly pushing the discharge baffle 43 is provided in the screening box 10.

[0027] See also Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Fig.11 and Fig.12 The fixed frame 20 is fixed with a motor frame 11 by bolts at one end of the fixed shaft 21, and a driving motor 12 is fixed with bolts on the top of the motor frame 11. The output end of the driving motor 12 is connected with a first pulley 13. The fixed frame 20 is fixed with a reducer 14 by bolts on one side of the top of the driving motor 12. The fixed shaft 21 is installed through the reducer 14. The fixed shaft 21 is installed with a second pulley 15. A transmission belt 16 is connected between the second pulley 15 and the first pulley 13. The driving motor 12 cooperates with the reducer 14 to drive the fixed shaft 21 to rotate stably.

[0028] The pushing structure includes a rotating disk 60 and a U-shaped push rod 44. A first bevel gear 62 is provided on the side of the T-shaped fixed column 30 away from the fixed rotating shaft 21, and the first bevel gear 62 is fixedly installed on the supporting rotating shaft 22. A connecting rotating shaft 63 is connected to the top of the screening box 10 through a bearing, and a second bevel gear 64 movably meshed with the first bevel gear 62 is fixedly installed at the bottom of the connecting rotating shaft 63. The rotating disk 60 is fixedly installed at the bottom of the connecting rotating shaft 63. During the rotation process, the fixing ring 31 drives the rotating plate 26 connected to the supporting rotating shaft 22 to also rotate synchronously through the fixing plate 23, the limiting shaft 24, the fixing block 25 and the T-shaped rotating column 27. The supporting rotating shaft 22 drives the rotating disk 60 to rotate by the meshing connection of the bevel gears.

[0029] The bottom of the rotating disk 60 is connected to a hinged rod 65 through a T-shaped positioning ring 66. The hinged rod 65 is movably connected to a U-shaped push rod 44 through a hinge 67. The U-shaped push rod 44 penetrates the screening box 10 and movably abuts against the discharge baffle 43. The U-shaped push rod 44 pushes the discharge baffle 43 of the L-shaped guide frame 42 that moves to the lowest position, so that the screened coal slag in the L-shaped guide frame 42 is discharged.

[0030] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.13 The support plate 50 is provided with a support groove 57, the rotating cam 53 moves in the support groove 57, the top of the screening box 10 is provided with a movable hole 17, the bottom of the movable rod 55 moves through the two ends of the support plate 50, and the top of the movable rod 55 moves through the movable hole 17. A telescopic support rod 58 is fixedly installed between the support plate 50 and the movable plate 52 in the telescopic spring 51. The rotating cam 53 reciprocates the movable plate 52 through the telescopic spring 51 and the telescopic support rod 58, and the screening plate 40 on the conical base block 46 is vibrated by the movable plate 52, the movable rod 55 and the arc block 56.

[0031] A plurality of screening holes 45 are evenly arranged at the bottom of the screening plate 40. The screening plate 40 and the base plate 41 are inclined structures. A conical base block 46 is fixedly installed at the bottom of the base plate 41 by bolts, and the bottom of the conical base block 46 is kept horizontal with the screening box 10, so that the arc block 56 of the reset movement can smoothly knock on the conical base block 46, thereby improving the screening and filtering effect of the coal slag in the screening plate 40.

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.11 , Fig.12 and Fig.13 The screening disc 40 is fixedly mounted with a discharge hopper 47, and an L-shaped connecting plate 48 is fixedly mounted with bolts at one end of the discharge hopper 47 close to the screening disc 40, and an electric telescopic rod 49 is fixedly mounted with bolts on the L-shaped connecting plate 48, and an arc-shaped baffle plate 70 for blocking the discharge hopper 47 is fixedly mounted with bolts at the bottom of the electric telescopic rod 49, and the discharge hopper 47 is opened and closed by the arc-shaped baffle plate 70 in cooperation with the telescopic support rod 58, and the unscreened coal slag is discharged through the discharge hopper 47.

[0033] The screening box 10 is provided with a connecting hole 18 at one end away from the driving motor 12, and the U-shaped push rod 44 moves in the connecting hole 18. A limit plate 61 is fixedly installed in the connecting hole 18 by bolts. A T-shaped slide groove 68 is provided on the limit plate 61, and a T-shaped slider 69 is slidably connected in the T-shaped slide groove 68. The top of the T-shaped slider 69 is fixedly installed on the U-shaped push rod 44, so that the U-shaped push rod 44 cooperates with the T-shaped slide groove 68 and the T-shaped slider 69 to complete reciprocating motion under the action of the rotating disk 60, the T-shaped positioning ring 66, the hinge rod 65 and the hinge 67 to complete the reciprocating motion. The limiting of the T-shaped slider 69 and the T-shaped slide groove 68 enables the U-shaped push rod 44 to complete a stable and smooth reciprocating motion at the top of the limit plate 61, and the U-shaped push rod 44 moves in the connecting hole 18. When the U-shaped push rod 44 pushes the discharging baffle 43 out at a regular time, the L-shaped guide rack 42 can complete the discharging of the coal slag.

[0034] See also Figure 1 , Figure 2 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 A connecting frame 80 connected to the discharge baffle 43 is fixedly installed at the bottom of the L-shaped guide frame 42 by bolts, and a compression spring 81 is fixedly installed at one end of the connecting frame 80 away from the U-shaped push rod 44 by bolts, and a connecting block 82 movable in the connecting frame 80 is fixedly installed on the top of the compression spring 81.

[0035] A connecting groove 83 is provided at the bottom of the connecting frame 80, and the bottom of the connecting block 82 passes through the connecting groove 83 and is installed on the top of the discharge baffle 43. The U-shaped push rod 44 compresses the compression spring 81 when pushing, and the discharge baffle 43 is reset through the connecting block 82 and the connecting groove 83 when the compression spring 81 is reset. The top of the screening box 10 is connected to a flip plate 90 through a hinge joint. A flip hole 19 is provided on the flip plate 90, and the arc plate 32 moves in the flip hole 19. The flip hole 19 enables the fixing ring 31 to cooperate with the arc plate 32 to rotate and lift the screening plate 40, thereby completing the screening and filtering effect of the screening holes 45 in the screening plate 40 on the coal slag.

[0036] Working principle: the screened coal slag is injected into the screening plate 40, and the fixed shaft 21 on the fixed frame 20 is driven to rotate by the driving motor 12, the reducer 14, the first pulley 13, the second pulley 15 and the transmission belt 16. During the rotation process, the fixed shaft 21 drives the T-shaped rotating column 27 to rotate synchronously in the fixed frame 20 through the rotating plate 26. During the rotation process, the T-shaped rotating column 27 drives the fixed block 25 connected to the upper limit shaft 24 of the fixed plate 23 to rotate, and the T-shaped rotating column 27 also moves back and forth in the fixed block 25. When the rotating plate 26 drives the T-shaped rotating column 27 to move to the left and right sides, the T-shaped rotating column 27 will pass through the fixed block 25 and the limit shaft 24. The positioning shaft 24 drives the fixing ring 31 on the fixing plate 23 to rotate left and right and descend on the T-shaped fixing column 30. The fixing ring 31 descends and rotates on the periphery of the T-shaped fixing column 30. During the whole movement, the coal slag in the screening plate 40 rotates and telescopes. During the rotation, the coal slag is filtered and screened through the screening holes 45. When rising, the coal slag is lifted up, and the smaller coal slag pressed at the bottom of the large coal slag is shaken off and turned up, and then descends and rotates to filter the coal slag. When the T-shaped rotating column 27 moves to the highest position, the screening plate 40 will be pushed to the highest point, and when the T-shaped rotating column 27 moves to the lowest position, the screening plate 40 will be driven to the lowest point.

[0037] When the T-shaped rotating column 27 moves from the highest position to the lowest position, the fixed ring 31 drives the rotating plate 26 on the T-shaped rotating column 27 to rotate synchronously through the fixed plate 23, the limit shaft 24 and the fixed block 25 during the rotation process, and the rotating plate 26 will drive the supporting shaft 22 to rotate. When the T-shaped rotating column 27 moves to the highest position, the rotating cam 53 on the supporting shaft 22 drives the movable plate 52 under the supporting plate 50 to move to the lowest position through the U-shaped seat 54, and the telescopic spring 51 between the movable plate 52 and the supporting plate 50 will be in a stretched state. At the same time, the U-shaped push rod 44 in the screening box 10 is in the innermost layer, that is, the distance between the U-shaped push rod 44 and the T-shaped fixed column 30 is at the minimum position.

[0038] When the T-shaped rotating column 27 moves to the lowest position, the rotating cam 53 and the movable plate 52 change from an abutting state to a disengaged state. At this time, the telescopic spring 51 is stretched and stored and needs to be reset. The telescopic spring 51 will drive the top of the movable rod 55 to be pushed out of the movable hole 17 of the screening box 10 through the movable plate 52, so that the arc block 56 on the movable rod 55 knocks the conical base block 46 connected to the bottom of the screening plate 40, so as to screen and filter the coal slag in the screening plate 40.

[0039] At the same time, the supporting shaft 22 drives the second bevel gear 64 on the connecting shaft 63 to move synchronously through the meshing of the first bevel gear 62, and the rotating disk 60 under the connecting shaft 63 rotates. When the T-shaped rotating column 27 moves to the lowest position, the rotating disk 60 pushes out the U-shaped push rod 44 on the limit plate 61 through the T-shaped positioning ring 66, the hinge rod 65 and the hinge 67. The U-shaped push rod 44 moves stably horizontally in the T-shaped slide groove 68 and the T-shaped slide block 69 on the limit plate 61, and the U-shaped push rod 44 will push the discharging baffle 43 under the connecting frame 80 to move, so that the coal slag screened in the L-shaped guide frame 42 is discharged. When pushing, the compression spring 81 in the connecting frame 80 is compressed. When the U-shaped push rod 44 is retracted, the compression spring 81 in the connecting frame 80 is reset, and the discharging baffle 43 is reset through the connecting groove 83 and the connecting block 82, and the L-shaped guide frame 42 is used to discharge the screened coal slag in a timely and quantitative manner, which is convenient for the subsequent unified collection of coal slag.

[0040] After the screening plate 40 screens the coal slag for a certain period of time, the L-support plate 50 drives the arc-shaped baffle 70 to open the discharge hopper 47, and the discharge hopper 47 on the screening plate 40 can discharge the coal slag that has not been screened.

[0041] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A slag screening device for coal mine production, comprising a screening box (10), characterized in that: A fixing frame (20) is fixedly installed at the bottom of the screening box (10) by bolts, a T-shaped fixing column (30) is fixedly installed inside the fixing frame (20), a fixing ring (31) is movably sleeved on the top of the T-shaped fixing column (30), an arc-shaped plate (32) is fixedly installed around the top of the fixing ring (31), a screening plate (40) for screening coal slag is arranged on the top of the arc-shaped plate (32), and a rotating structure for moving the screening plate (40) is arranged inside the fixing frame (20), and the rotating structure includes: A fixed rotating shaft (21) is movably arranged on one side of the fixing frame (20), and supporting rotating shafts (22) are movably arranged on the other three sides of the fixing frame (20). A fixing plate (23) is fixedly installed around the fixing ring (31), and the fixing plate (23) is movably connected to a fixing block (25) via a limiting shaft (24). A rotating plate (26) is fixedly installed at one end of the fixed rotating shaft (21) and the supporting rotating shaft (22) close to the fixing ring (31), and a T-shaped rotating column (27) is fixedly installed on the rotating plate (26), and the T-shaped rotating column (27) movably passes through the fixing block (25); The fixed frame (20) is fixedly provided with support plates (50) on both sides of the fixed rotating shaft (21); the bottom of the support plate (50) is connected to a movable plate (52) via a telescopic spring (51); a rotating cam (53) is fixedly provided at one end of the support rotating shaft (22) located at the support plate (50); a U-shaped seat (54) is fixedly provided on the top of the movable plate (52); the rotating cam (53) and the U-shaped seat (54) are movable against each other; arc blocks (56) for vibrating the screening plate (40) are connected to the top ends of the movable plate (52) via movable rods (55); A base plate (41) is fixedly mounted on the bottom of the screening plate (40), an L-shaped material guide frame (42) for discharging coal slag is fixedly mounted on the base plate (41), a material discharging baffle (43) is movably arranged on the bottom of the L-shaped material guide frame (42), and a pushing structure for reciprocatingly pushing the material discharging baffle (43) is arranged in the screening box (10).

2. A slag screening device for coal mine production according to claim 1, characterized in that: The fixed frame (20) is fixedly mounted with a motor frame (11) at one end of the fixed rotating shaft (21) by means of bolts, a driving motor (12) is fixedly mounted with bolts at the top of the motor frame (11), an output end of the driving motor (12) is connected to a first pulley (13), a reducer (14) is fixedly mounted with bolts at one side of the top of the driving motor (12) on the fixed frame (20), the fixed rotating shaft (21) is installed through the reducer (14), a second pulley (15) is mounted on the fixed rotating shaft (21), and a transmission belt (16) is connected between the second pulley (15) and the first pulley (13).

3. A slag screening device for coal mine production according to claim 2, characterized in that: The pushing structure comprises a rotating disk (60) and a U-shaped push rod (44); a first bevel gear (62) is arranged on the outside of the T-shaped fixed column (30) on a side away from the fixed rotating shaft (21), and the first bevel gear (62) is fixedly mounted on the supporting rotating shaft (22); a connecting rotating shaft (63) is connected to the top of the screening box (10) via a bearing; a second bevel gear (64) movably meshing with the first bevel gear (62) is fixedly mounted on the bottom of the connecting rotating shaft (63); and the rotating disk (60) is fixedly mounted on the bottom end of the connecting rotating shaft (63); The bottom of the rotating disk (60) is connected to a hinged rod (65) via a T-shaped positioning ring (66); the hinged rod (65) is movably connected to the U-shaped push rod (44) via a hinge (67); the U-shaped push rod (44) passes through the screening box (10) and movably abuts against the discharge baffle (43).

4. The slag screening device for coal mine production according to claim 1, characterized in that: The support plate (50) is provided with a support groove (57), the rotating cam (53) moves in the support groove (57), the top of the screening box (10) is provided with a movable hole (17), the bottom of the movable rod (55) moves through the two ends of the support plate (50), the top of the movable rod (55) moves through the movable hole (17), and a telescopic support rod (58) is fixedly installed in the telescopic spring (51) between the support plate (50) and the movable plate (52).

5. The slag screening device for coal mine production according to claim 1, characterized in that: A plurality of screening holes (45) are evenly arranged at the bottom of the screening plate (40); the screening plate (40) and the base plate (41) are inclined structures; a conical base block (46) is fixedly mounted on the bottom of the base plate (41) by bolts, and the bottom of the conical base block (46) is kept level with the screening box (10).

6. The slag screening device for coal mine production according to claim 5, characterized in that: The screening plate (40) is fixedly mounted with a discharge hopper (47); an L-shaped connecting plate (48) is fixedly mounted on one end of the discharge hopper (47) close to the screening plate (40) by means of bolts; an electric telescopic rod (49) is fixedly mounted on the L-shaped connecting plate (48) by means of bolts; and an arc-shaped baffle (70) for blocking the discharge hopper (47) is fixedly mounted on the bottom of the electric telescopic rod (49) by means of bolts.

7. The slag screening device for coal mine production according to claim 3, characterized in that: The screening box (10) is provided with a connecting hole (18) at one end away from the driving motor (12), the U-shaped push rod (44) moves in the connecting hole (18), a limit plate (61) is fixedly installed in the connecting hole (18) by means of bolts, a T-shaped slide groove (68) is provided on the limit plate (61), a T-shaped slide block (69) is slidably connected in the T-shaped slide groove (68), and the top of the T-shaped slide block (69) is fixedly installed on the U-shaped push rod (44).

8. The slag screening device for coal mine production according to claim 3, characterized in that: A connecting frame (80) connected to the material discharging baffle (43) is fixedly mounted on the bottom of the L-shaped material guide frame (42) by means of bolts, a compression spring (81) is fixedly mounted on one end of the connecting frame (80) away from the U-shaped push rod (44) by means of bolts, and a connecting block (82) movable in the connecting frame (80) is fixedly mounted on the top of the compression spring (81).

9. The slag screening device for coal mine production according to claim 8, characterized in that: A connecting groove (83) is formed at the bottom of the connecting frame (80), and the bottom of the connecting block (82) passes through the connecting groove (83) and is mounted on the top of the discharge baffle (43); The top of the screening box (10) is connected to a flip plate (90) via a hinged joint, a flip hole (19) is provided on the flip plate (90), and the arc plate (32) moves in the flip hole (19).

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