An automatic bagging system for gangue aggregate in underground coal mines

Abstract

This invention relates to the field of automatic bagging technology for gangue aggregate, specifically an automatic bagging system for gangue aggregate in underground coal mines. It includes a conveyor frame and a conveyor roller rotatably connected to the inner side of the conveyor frame; a conveyor belt is driven by the outer wall of the conveyor roller; one of the conveyor rollers is driven by a conveyor motor; a sealing machine is located on the left rear side of the conveyor frame; the sealing end of the sealing machine extends directly above the conveyor belt; a main frame is located on the right rear side of the conveyor frame; a material stabilizing box is fixedly connected to the upper part of the main frame; a feeding hopper is located at the top of the material stabilizing box for inserting a guide pipe; a feeding box is fixedly connected to the bottom of the material stabilizing box and connected through a connecting groove; this invention achieves rapid opening and clamping positioning of the sacks through the clamping cooperation of the clamping block and the filling pipe, ensuring smooth gangue bagging; precise gangue filling is achieved through the middle valve, inner valve, and weighing plate; finally, the sealing machine enhances the automation level of gangue bagging.

Description

Technical Field

[0001] This invention relates to the field of automatic bagging technology for gangue aggregates, specifically an automatic bagging system for gangue aggregates in underground coal mines. Background Technology

[0002] Under the "no gangue leaving the well" system, after sorting and multi-stage crushing, the fine particles of gangue can be disposed of on-site through pneumatic pipelines or filling systems. However, due to factors such as crushing fluctuations, screening efficiency, and differences in gangue lithology, the drum screen or terminal screening will still produce some oversized aggregates larger than 10 mm. If this material enters the pneumatic conveying system, it is easy to cause pipe blockage, wear, and machine downtime. Therefore, it usually needs to be diverted and disposed of separately, specifically by bagging and transporting it away or transferring it to other uses.

[0003] Currently, underground gangue bagging is mostly done manually or semi-automatically. During the bagging process, the burlap sacks (woven bags) need to be manually opened, which is a cumbersome process. The measurement of gangue bagged each time still relies on experience or simple weighing, which has a large error. After the gangue bagging is completed, it also needs to be manually sealed, which is inefficient. Therefore, there is an urgent need for an automatic bagging system that is suitable for continuous underground working conditions, has a compact structure, is explosion-proof, and has stable measurement. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes an automatic bagging system for gangue aggregate in underground coal mines. This invention achieves rapid opening and clamping of burlap sacks through the clamping cooperation between clamping blocks and filling pipes, ensuring smooth gangue bagging. Precise gangue filling is achieved through the middle valve, inner valve, and weighing plate. Finally, the sealing machine is used to improve the automation level of gangue bagging.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: An automatic bagging system for gangue aggregate in underground coal mines, comprising a conveyor frame and a conveyor roller rotatably connected to the inner side of the conveyor frame; a conveyor belt is driven to the outer wall of the conveyor roller; one of the conveyor rollers is driven by a conveyor motor; a sealing machine is located on the left rear side of the conveyor frame; the sealing end of the sealing machine extends directly above the conveyor belt; a main frame is located on the right rear side of the conveyor frame; a material stabilizing box is fixedly connected to the upper part of the main frame; the top of the material stabilizing box... The feed hopper is provided for the insertion of the guide pipe; the bottom of the stabilizing box is fixedly connected to the feeding box and connected through a connecting groove; the bottom of the feeding box is fixedly connected to the loading pipe and connected through a discharge groove; a support block is fixedly connected to the bottom of the feeding box and outside the loading pipe; two support blocks are respectively rotatably connected to a screw and a sliding rod; one of the screws is driven by a lower motor; the threads at both ends of the screw are arranged in opposite directions; the threads at both ends of the screw are connected to a crossbar; the crossbar is slidably connected to the sliding rod; the lower surface of the crossbar is fixedly connected to a clamping block through a vertical bar.

[0006] Preferably, the connecting groove passes through the upper valve stem; the two upper valve stems are driven by an upper motor; the connecting groove is flipped to connect the two upper valves; the edges of the upper valves that are far apart are fixedly connected to the corresponding upper valve stems; the edges of the upper valves that are close to each other are provided with inner valve grooves; the inner wall of the inner valve groove is provided with a rod groove; the inner wall of the inner valve groove is slidably and sealingly connected to the inner valve; the inner valve is connected to the bottom of the rod groove through an electric push rod; the inner valve can enter or exit the rod groove; two middle valve stems pass through the inside of the feed box; the middle valve stems are fixedly connected to L-shaped middle valves; the two middle valves are symmetrical and in sealed contact; the middle valve stems are driven by a middle motor; a weighing plate is embedded in the lower plane of the inner side of the middle valve.

[0007] Preferably, the two clamping blocks are provided with hinge grooves on their adjacent sides; the two hinge blocks are rotatably connected in the hinge grooves by torsion springs; an arc-shaped strip is fixed to the outer end of each hinge block; the four arc-shaped strips are combined to form a complete circle.

[0008] Preferably, in the non-clamping state, the two arc-shaped strips on the same clamping block are closer to each other at one end than at the other end, which is closer to the loading tube.

[0009] Preferably, the outer wall of the loading tube is provided with an annular groove; the arc-shaped strip can be inserted into and removed from the annular groove.

[0010] Preferably, the vertical inner wall of the annular groove is provided with a rotating groove; a rotating rod is rotatably connected in the rotating groove; the two rotating grooves are distributed on the front and rear sides of the loading tube.

[0011] Preferably, two arc-shaped strips on the same clamping block are respectively provided with a first pressing groove and a first pressing block at one end; the first pressing block can be engaged or disengaged from the first pressing groove.

[0012] Preferably, the two arc-shaped strips in the front and rear directions are respectively provided with a second pressing groove and a second pressing block at one end close to each other; the second pressing groove penetrates the inner and outer walls of the arc-shaped strip; the second pressing block can be inserted into or removed from the second pressing groove.

[0013] Preferably, the annular groove has an inverted J-shaped groove connected to the bottom wall of the loading tube near its upper inner wall; the inverted J-shaped groove is slidably connected to an inverted J-shaped strip; the inner bend of the inverted J-shaped strip is connected to the inner wall of the inverted J-shaped groove by a spring; the arc-shaped strip has an arc-shaped locking groove running through it vertically; the number and position of the inverted J-shaped grooves correspond to the locking grooves; the driven end of the inverted J-shaped strip can be engaged in the locking groove; a cross is provided at the lower end of the loading tube; the cross is fixedly connected to the driving end of the inverted J-shaped strip.

[0014] Preferably, the surface of the cross is smooth.

[0015] The beneficial effects of this invention are as follows: 1. This invention achieves rapid opening and clamping positioning of burlap sacks through the clamping cooperation between the clamping block and the filling pipe, ensuring smooth bagging of gangue; precise filling of gangue is achieved through the middle valve, inner valve and weighing plate; finally, the sealing machine is used to improve the automation level of gangue bagging.

[0016] 2. In this invention, the two arc-shaped strips on the same clamping block move closer together at one end as the hinge block flips. The ends of the arc-shaped strips rub against the burlap sack, causing the two arc-shaped strips on the same clamping block to move the burlap sack at one end, thereby tightening the other parts of the burlap sack opening. This prevents the burlap sack from opening too large during the bagging process, thus preventing dust from overflowing and achieving the purpose of suppressing dust during the bagging process.

[0017] 3. In this invention, after the arc-shaped strips are completely attached to the outer wall of the loading pipe through the burlap sack, the two corresponding arc-shaped strips on the front and rear sides come into contact, and the two arc-shaped strips on the same clamping block move closer to each other at one end to clamp the opening of the burlap sack in the accommodating gap. The four arc-shaped strips form a whole, thereby clamping and positioning the burlap sack all around, thereby improving the stability of the burlap sack during the burlap sacking process and reducing the chance of the sack coming off. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a perspective view of the upper valve, the middle valve, and the loading pipe in this invention; Figure 4 This is a cross-sectional view of the upper valve in this invention; Figure 5 This is a cross-sectional view of the loading tube, screw, and slide bar in this invention; Figure 6 yes Figure 5 A stereoscopic view from another angle; Figure 7 This is a perspective view of the arc-shaped strip and the clamping block in this invention; Figure 8 This is a perspective view of the cross and the inverted J-shaped strip in this invention; Figure 9 This is a cross-sectional view of the loading tube in this invention.

[0020] In the diagram: 1. Conveyor frame; 11. Conveyor roller; 12. Conveyor belt; 13. Conveyor motor; 2. Sealing machine; 21. Sealing end; 3. Main frame; 4. Material stabilizing box; 40. Electric push rod; 41. Feed hopper; 42. Guide pipe; 43. Connecting groove; 44. Upper valve stem; 45. Upper motor; 46. Upper valve; 47. Inner valve groove; 48. Rod groove; 49. Inner valve; 5. Feed box; 50. Middle motor; 51. Discharge chute; 52. Support block; 53. Screw; 54. Slide rod. 55. Lower motor, 56. Horizontal bar, 57. Vertical bar, 58. Middle valve stem, 59. Middle valve, 59. Weighing plate, 591. Loading pipe, 6. Annular groove, 61. Rotating groove, 62. Rotating rod, 63. Inverted J-shaped groove, 64. Inverted J-shaped bar, 65. Spring, 66. Cross, 67. Clamping block, 71. Hinge groove, 73. Arc bar, 81. First pressing groove, 82. First pressing block, 83. Second pressing groove, 84. Locking groove, 85. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 9 As shown, the present invention includes the following embodiments: Example 1: An automatic bagging system for gangue aggregate in underground coal mines includes a conveyor frame 1 and a conveyor roller 11 rotatably connected to the inner side of the conveyor frame 1; a conveyor belt 12 is driven to the outer wall of the conveyor roller 11; one of the conveyor rollers 11 is driven by a conveyor motor 13; a sealing machine 2 is provided on the left rear side of the conveyor frame 1; the sealing end 21 of the sealing machine 2 extends directly above the conveyor belt 12; a main frame 3 is provided on the right rear side of the conveyor frame 1; a material stabilizing box 4 is fixedly connected to the upper part of the main frame 3; a feed hopper 41 is provided on the top of the material stabilizing box 4 for the insertion of a guide pipe 42; The bottom of the stable material box 4 is fixedly connected to the feeding box 5 and connected through the connecting groove 43; the bottom of the feeding box 5 is fixedly connected to the loading pipe 6 and connected through the discharge groove 51; the bottom of the feeding box 5 and located outside the loading pipe 6 are fixedly connected to the support block 52; the two support blocks 52 are respectively rotatably connected to the screw 53 and the slide rod 54; one of the screws 53 is driven by the lower motor 55; the threads at both ends of the screw 53 are arranged in opposite directions; the threads at both ends of the screw 53 are connected to the crossbar 56; the crossbar 56 is slidably connected to the slide rod 54; the lower surface of the crossbar 56 is fixedly connected to the clamping block 7 through the vertical bar 57.

[0023] In this embodiment, the connecting groove 43 passes through the upper valve stem 44; the two upper valve stems 44 are driven by the upper motor 45; the connecting groove 43 is flipped to connect the two upper valves 46; the edges of the upper valves 46 that are far apart from each other are fixedly connected to the corresponding upper valve stems 44; the edges of the upper valves 46 that are close to each other are provided with inner valve grooves 47; the inner wall of the inner valve groove 47 is provided with rod grooves 48; the inner wall of the inner valve groove 47 is slidably and sealingly connected to the inner valve 49; the inner valve 49 is connected to the bottom of the rod groove 48 through an electric push rod 40; the inner valve 49 can enter or exit the rod groove 48; the feed box 5 has two middle valve stems 58 passing through it; the middle valve stems 58 are fixedly connected to the L-shaped middle valves 59; the two middle valves 59 are symmetrical and in sealed contact; the middle valve stems 58 are driven by the middle motor 50; a weighing plate 591 is embedded in the lower plane of the inner side of the middle valve 59.

[0024] The gangue to be bagged enters the stabilizing tank 4 under the guidance of the feed pipe 42. The stabilizing tank 4 serves to temporarily store the material to ensure stable subsequent loading. With the lower halves of the two intermediate valves 59 in contact with each other and placed horizontally, the weighing plate 591 on the inner plane of the intermediate valve 59 is also placed horizontally. Then, the upper motor 45 is controlled to work, which drives the upper valve rod 44 to rotate. During the rotation of the two upper valve rods 44, the upper valve 46 is driven to flip downward in the connecting groove 43, causing the connecting groove 43 to open. Then, the material inside the stabilizing tank 4 falls along the connecting groove 43 into the feeding tank 5, and finally falls onto the upper surface of the weighing plate 591 at the bottom inner side of the intermediate valve 59. The weighing plate 591 is an electronic scale that can weigh the material it carries. When the weight plate 591 approaches the required bagging weight, it controls the upper valve 46 to flip to a horizontal position. The two upper valves 46 will then contact each other. The electric push rod 40 shortens, causing the inner valve 49 to slide within the inner valve groove 47, opening the inner valve groove 47. The material will then be precisely fed along the inner valve groove 47. Finally, the electric push rod 40 extends, moving the inner valve 49 until the inner valve groove 47 closes, completing the material preparation work in the feeding box 5. Next, the worker will place the sack with the opening facing upwards on the outside of the filling pipe 6. Since the two clamping blocks 7 are distributed front and back, and the worker's hands are distributed left and right when lifting the sack, the clamping block 7 will not affect the worker's operation. Subsequently, the lower motor 55 controls the screw 53 to rotate. The outer shell of the lower motor 55 and the feed... The outer shell of the material bin 5 is fixedly connected. The output end of the lower motor 55 is connected to the screw 53, so the screw 53 will be driven to rotate by the lower motor 55. During the rotation of the screw 53, the two horizontal bars 56 will move closer to each other. The two horizontal bars 56 will move their respective vertical bars 57 closer to each other. The two vertical bars 57 will move the clamping blocks 7 closer to each other. The clamping blocks 7 will eventually press the burlap sack tightly against the outer wall of the filling pipe 6, thus sealing the opening of the burlap sack. The control motor 50 drives the middle valve rod 58 to rotate. The middle valve rod 58 will drive the L-shaped middle valve 59 to flip, causing the material inside the two middle valves 59 to fall. The material will pass through the discharge chute 51 and enter the filling pipe 6, and finally flow into the burlap sack along the filling pipe 6. The burlap sack is the filling bag. After the material is loaded, the control motor 55 is turned on. The screw 53 is reversed, causing the two horizontal bars 56 and the vertical bar 57 to move away from each other. The vertical bar 57 will cause the clamping block 7 to move away from the loading pipe 6, releasing the clamp on the opening of the burlap sack. The burlap sack after being filled will fall onto the upper surface of the conveyor belt 12 and vibrate. The material inside the burlap sack will become more compact under the action of vibration, reducing the volume of the material inside the burlap sack. The burlap sack is blocked and limited by the front and rear conveyor frames 1, preventing it from tipping over. Finally, the conveyor motor 13 will drive one of the conveyor rollers 11 to rotate, thereby causing the conveyor belt 12 to drive the burlap sack to be conveyed to the left. The burlap sack will be driven to enter the sealing end 21 of the sealing machine 2 through the opening. The sealing gap of the sealing end 21 seals the burlap sack that has passed through the inside. This sealing process is existing technology and will not be described in detail here.The valve 59 will flip and reset to its original contact, and the connecting groove 43 will open again to feed material, and this process will repeat. This embodiment can automatically clamp and fill sacks during the gangue bagging process, avoiding manual bag breaking and quantitative filling. After bagging, it can automatically seal the bags and transport the finished bags. The guide pipe 42 is connected to the discharge end of the rotary screen. The material stabilizing box 4 is used to buffer and store materials, and to smooth out peaks and valleys, reducing material fluctuations. The sack support can also adopt other structures, such as inner support claws and outer clamping claws to support the bags. In this embodiment, the inner side of the guide pipe 42 can be equipped with a wear-resistant liner and a dust suppression spray interface. The invention achieves rapid opening and clamping of sacks by clamping the clamping block 7 with the filling pipe 6, ensuring the smooth bagging of gangue. The middle valve 59, inner valve 49 and weighing plate 591 achieve precise gangue filling. Finally, the sealing machine 2 is used to improve the automation level of gangue bagging.

[0025] Example 2: Two clamping blocks 7 are provided with hinge grooves 71 on their side close to each other; two hinge blocks 73 are rotatably connected in the hinge grooves 71 by torsion springs; an arc-shaped strip 8 is fixed to the outer end of the hinge block 73; the four arc-shaped strips 8 are combined to form a complete circle.

[0026] In this embodiment, in the non-clamping state, the two arc-shaped strips 8 on the same clamping block 7 are closer to each other at one end than at the other end, which is closer to the loading tube 6.

[0027] After the burlap sack is inserted through the opening onto the outside of the filling tube 6, the two horizontal bars 56 are controlled to move closer together. The horizontal bars 56 will drive the vertical bars 57 and the clamping blocks 7 to move closer to the filling tube 6 simultaneously. The clamping blocks 7 will drive the arc-shaped bars 8 to move closer to the filling tube 6 through the hinge blocks 73. The two arc-shaped bars 8 on the same hinge block 73 are closer to the filling tube 6 at one end than at the other end. Therefore, after the clamping blocks 7 drive the two arc-shaped bars 8 to press against the outer wall of the filling tube 6 through the burlap sack, the worker releases the burlap sack, and the two clamping blocks 7 continue to move closer to the filling tube. 6. On the outer wall, the curved strip 8, when compressed, overcomes the torsion spring and drives the corresponding hinge block 73 to rotate. Two curved strips 8 on the same clamping block 7, with their ends close together, will move closer together as the hinge block 73 rotates. Friction exists between the ends of the curved strips 8 and the burlap sack, causing the two curved strips 8 on the same clamping block to move towards each other, thus tightening the other parts of the burlap sack opening. This prevents the burlap sack from opening too large during the filling process, thus suppressing dust during the filling process. On the same clamping block 7... Two curved strips 8, positioned close together, form a receiving gap. The burlap sacks, propelled by the ends of the two curved strips 8 on the same clamping block 7, converge into this gap. After the curved strips 8 are completely pressed against the outer wall of the loading pipe 6, separated by the burlap sacks, the two corresponding curved strips 8 on the front and rear sides contact each other. The two curved strips 8 on the same clamping block 7 then clamp the opening of the burlap sack within the receiving gap. The four curved strips 8 form a unified structure, thus clamping and positioning the burlap sacks from all sides, thereby improving the stability of the burlap sacks during the bagging process and reducing the chance of them coming loose. Note that the sacks are suspended and clamped during the filling process, which makes it easier for the gangue to converge inwards as it enters the sacks. After the gangue is filled into the sacks, the two clamping blocks 7 are controlled to move away from each other, and the torsion spring drives the hinge block 73 to flip and reset, so that the two arc strips 8 at the front and rear are disengaged. The two arc strips 8 on the same clamping block 7 will move away from each other and flip and unfold, releasing the sacks in the gap. After the sack opening is released from clamping, the sacks will fall onto the conveyor belt 12, and the unfolded arc strips 8 will make room for the sacks to fit on the outer wall of the loading pipe 6.

[0028] Example 3: The outer wall of the loading tube 6 is provided with an annular groove 61; the arc-shaped strip 8 can be inserted into and removed from the annular groove 61.

[0029] In this embodiment, the vertical inner wall of the annular groove 61 is provided with a rotating groove 62; a rotating rod 63 is rotatably connected in the rotating groove 62; the two rotating grooves 62 are distributed on the front and rear sides of the loading tube 6.

[0030] With an annular groove 61 on the outer wall of the filling pipe 6, the burlap sack needs to pass through the annular groove 61 during the process of being placed on the outer wall of the filling pipe 6. Then, the two clamping blocks 7 are controlled to move closer to each other. The clamping blocks 7 will drive the connected arc-shaped strips 8 to move closer to the filling pipe 6. After the two arc-shaped strips 8 on the same clamping block 7 move closer to each other and abut against the inner wall of the annular groove 61 of the filling pipe 6, the two arc-shaped strips 8 on the same clamping block 7 move closer to each other and contact the rotating rod 63 through the burlap sack. The setting of the rotating rod 63 reduces the friction between the vertical inner wall of the front and rear sides of the annular groove 61 and the burlap sack, so that the burlap sack can move with the push of the ends of the arc-shaped strips 8. Under the action of the ends of the arc-shaped strips 8, the burlap sack is smoothly pushed into the receiving gap, and the other parts of the burlap sack opening are smoothly tightened. As the clamping blocks 7 continue to move closer to the filling pipe 6, the opening of the burlap sack is smoothly pressed into the annular groove 61 by the four arc-shaped strips 8, further improving the effect of clamping and positioning the burlap sack opening.

[0031] Example 4: Two arc-shaped strips 8 on the same clamping block 7 are respectively provided with a first pressing groove 81 and a first pressing block 82 at one end; the first pressing block 82 can be inserted into or removed from the first pressing groove 81.

[0032] In this embodiment, two arc-shaped strips 8 in the front-to-back direction are respectively provided with a second pressing groove 83 and a second pressing block 84 at one end close to each other; the second pressing groove 83 penetrates the inner and outer walls of the arc-shaped strip 8; the second pressing block 84 can be inserted into or removed from the second pressing groove 83.

[0033] As the two clamping blocks 7 approach each other, the two arc-shaped strips 8 on the same clamping block 7 approach each other, with one end abutting against the outer wall of the loading pipe 6 and pushing the burlap sack. The burlap sack is pushed into the receiving gap, tightening the burlap sack opening. As the arc-shaped strips 8 further press against the outer wall of the loading pipe 6, the first pressing block 82 approaches the first pressing groove 81. The first pressing block 82 presses the burlap sack into the first pressing groove 81 through the receiving gap, achieving the purpose of pressing the burlap sack within the receiving gap. While the arc-shaped strips 8 are pressing against the loading pipe 6 through the burlap sack, the second pressing block 84 is also pressed in through the burlap sack. During the process of pressing the second pressing groove 83 and the second pressing block 84 into the second pressing groove 83, the burlap sack will be squeezed, causing the burlap sack to bend and deform at the opening position that is not attached to the outer wall of the filling pipe 6, thereby further avoiding the opening of the burlap sack and further preventing the overflow of dust during the bagging process. During the process of pressing the second pressing block 84 into the second pressing groove 83, the burlap sack will be further compressed, and the arc strips 8 in the front and rear positions will form a whole, improving the overall strength. As the two clamping blocks 7 move away from each other, the first pressing block 82 moves out of the first pressing groove 81, and the second pressing block 84 presses into the second pressing groove 83.

[0034] Example 5: The annular groove 61 is provided with an inverted J-shaped groove 64 that communicates with the bottom wall of the loading tube 6 near its upper inner wall; the inverted J-shaped groove 64 is slidably connected to an inverted J-shaped strip 65; the inner bend of the inverted J-shaped strip 65 is connected to the inner wall of the inverted J-shaped groove 64 by a spring 66; the arc-shaped strip 8 is provided with an arc-shaped locking groove 85 that runs through it vertically; the number and position of the inverted J-shaped grooves 64 correspond to the locking grooves 85; the driven end of the inverted J-shaped strip 65 can be inserted into the locking groove 85; a cross 67 is provided at the lower end of the loading tube 6; the cross 67 is fixedly connected to the driving end of the inverted J-shaped strip 65.

[0035] In this embodiment, the surface of the cross 67 is smooth.

[0036] After the sack is placed on the filling pipe 6, the two clamping blocks 7 are brought closer together. During this process, the four arc-shaped strips 8 will enter the annular groove 61, clamping the opening of the sack. Then, the valve 59 is opened, and the material in the feed box 5 will move down into the filling pipe 6 and finally be discharged along the lower end of the filling pipe 6. During the discharge process, the material will hit the cross 67, causing the cross 67 to move the inverted J-shaped strip 65 downward against the spring 66. The inverted J-shaped strip 65 slides along the inverted J-shaped groove 64, and the driven end of the inverted J-shaped strip 65 will insert into the arc-shaped locking groove 85, locking the arc-shaped strip 8 in the annular groove. Within 61, the stability of the sack is further improved as the sack is locked during the material falling process. During the loading process, the cross 67 buffers the downward movement of the material, reducing the impact force of the material loading. As the material is gradually discharged from the loading tube 6, the impact force on the cross 67 decreases, and the spring 66 pushes the inverted J-shaped bar 65 to move upward along the inverted J-shaped groove 64. After the inverted J-shaped bar 65 moves upward, the driven end of the inverted J-shaped bar 65 moves out of the locking groove 85, realizing the unlocking of the arc bar 8. In this way, the arc bar 8 can move out of the annular groove 61 as the two clamping blocks 7 move away from each other. The smooth cross 67 is not easy to leave material.

[0037] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance. In the description of the present invention, "fixed connection" refers to a fixed connection.

[0038] The foregoing has shown and described 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 to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic bagging system for gangue aggregate in underground coal mines, comprising a conveyor frame and a conveyor roller rotatably connected to the inner side of the conveyor frame; a conveyor belt is driven to the outer wall of the conveyor roller; one of the conveyor rollers is driven by a conveyor motor; characterized in that: A sealing machine is located on the left rear side of the conveyor frame; the sealing end of the sealing machine extends directly above the conveyor belt; a main frame is located on the right rear side of the conveyor frame; a material stabilizing box is fixedly connected to the upper part of the main frame; a feeding hopper is provided on the top of the material stabilizing box for inserting a guide pipe; a feeding box is fixedly connected to the bottom of the material stabilizing box and connected through a connecting groove; a loading pipe is fixedly connected to the bottom of the feeding box and connected through a discharge groove; a support block is fixedly connected to the bottom of the feeding box and outside the loading pipe; two support blocks are rotatably connected to a screw and a sliding rod respectively; one of the screws is driven by a lower motor; the threads at both ends of the screw are opposite; a crossbar is threadedly connected to both ends of the screw; the crossbar is slidably connected to the sliding rod; a clamping block is fixedly connected to the lower surface of the crossbar through a vertical bar.

2. The automatic bagging system for gangue aggregate in underground coal mines according to claim 1, characterized in that: The connecting groove passes through the upper valve stem; the two upper valve stems are driven by the upper motor; the connecting groove flips and connects the two upper valves; the edges of the upper valves that are far apart are fixedly connected to the corresponding upper valve stems; the edges of the upper valves that are close to each other are provided with inner valve grooves; the inner wall of the inner valve groove is provided with a rod groove; the inner wall of the inner valve groove is slidably and sealingly connected to the inner valve; the inner valve is connected to the bottom of the rod groove through an electric push rod; the inner valve can enter or exit the rod groove; the feed box contains two middle valve stems; the middle valve stems are fixedly connected to L-shaped middle valves; the two middle valves are symmetrical and in sealed contact; the middle valve stems are driven by a middle motor; a weighing plate is embedded in the lower inner plane of the middle valve.

3. The automatic bagging system for gangue aggregate in underground coal mines according to claim 1, characterized in that: Two clamping blocks are provided with hinge grooves on their adjacent sides; the two hinge blocks are rotatably connected in the hinge grooves by torsion springs; an arc-shaped strip is fixed to the outer end of each hinge block; the four arc-shaped strips are combined to form a complete circle.

4. The automatic bagging system for gangue aggregate in underground coal mines according to claim 3, characterized in that: In the non-clamping state, the two arc-shaped strips on the same clamping block are closer to each other at one end than at the other end, which is closer to the loading tube.

5. The automatic bagging system for gangue aggregate in underground coal mines according to claim 3, characterized in that: The outer wall of the loading tube is provided with an annular groove; the arc-shaped strip can be inserted into and removed from the annular groove.

6. The automatic bagging system for gangue aggregate in underground coal mines according to claim 5, characterized in that: The vertical inner wall of the annular groove is provided with a rotating groove; a rotating rod is rotatably connected in the rotating groove; the two rotating grooves are distributed on the front and rear sides of the loading tube.

7. The automatic bagging system for gangue aggregate in underground coal mines according to claim 3, characterized in that: Two arc-shaped strips on the same clamping block are respectively provided with a first pressing groove and a first pressing block at one end; the first pressing block can be inserted into or removed from the first pressing groove.

8. The automatic bagging system for gangue aggregate in underground coal mines according to claim 3, characterized in that: Two arc-shaped strips in the front and rear directions are respectively provided with a second pressure groove and a second pressure block at one end close to each other; the second pressure groove runs through the inner and outer walls of the arc-shaped strip; the second pressure block can be inserted into or removed from the second pressure groove.

9. An automatic bagging system for gangue aggregate in underground coal mines according to claim 5, characterized in that: An inverted J-shaped groove is provided on the upper inner wall of the annular groove, which is connected to the bottom wall of the loading tube. An inverted J-shaped strip is slidably connected to the inverted J-shaped groove. The inner bend of the inverted J-shaped strip is connected to the inner wall of the inverted J-shaped groove by a spring. An arc-shaped locking groove is provided through the arc-shaped strip from top to bottom. The number and position of the inverted J-shaped grooves correspond to the locking grooves. The driven end of the inverted J-shaped strip can be inserted into the locking groove. A cross is provided at the lower end of the loading tube. The cross is fixedly connected to the driving end of the inverted J-shaped strip.

10. An automatic bagging system for gangue aggregate in underground coal mines according to claim 9, characterized in that: The surface of the cross is smooth.

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