Coal chute with multi-stage buffering function

Abstract

This invention discloses a coal chute with multi-stage buffering function. The invention relates to the field of coal mine transportation technology, and includes a feed inlet and a connecting pipe located at the bottom of the feed inlet. The feed inlet connects the connecting pipe to the discharge port of the raw coal crusher, allowing the crushed raw coal to enter the inner cavity of the connecting pipe. A dust removal and buffering mechanism is used to remove dust from the crushed raw coal. This mechanism buffers the raw coal fragments discharged from the connecting pipe and absorbs and collects dust and particulate matter from the raw coal, achieving dust and particulate matter removal as the raw coal accumulates. An anti-clogging mechanism is used to prevent the raw coal from clogging the dust removal and buffering mechanism, and a wrapping box is installed on the outer surface of the anti-clogging mechanism, achieving a multi-stage buffering effect for the raw coal during transportation.

Description

Technical Field

[0001] This invention relates to the field of coal mine transportation technology, specifically to a coal chute with multi-stage buffering function. Background Technology

[0002] Coal chutes are key underground coal transfer facilities, typically located at the intersection of mining roadways and transport roadways. Their function is to slid coal from the upper coal bunker or working face to the lower transport system by gravity. The design must comply with the "Coal Mine Safety Regulations," ensuring a stable structure, a reasonable slope (generally ≥60°), smooth inner walls (lined with steel plates or concrete), and the installation of anti-clogging devices and gas monitoring facilities. During construction, the cross-sectional dimensions of the coal chute must be strictly controlled (common diameter 1.5–2.5 meters). A buffer baffle or vibrating feeder should be installed at the bottom coal inlet to reduce impact wear. Routine maintenance requires regular inspection of the support structure, removal of accumulated coal, and strict prohibition of personnel from entering the working area to prevent gas accumulation or coal dust explosions. The efficient operation of coal chutes is crucial for improving the continuous transport capacity of coal mines and must be incorporated into the mine's standardized safety production management system.

[0003] When using a coal chute for unloading, the large height of the chute results in significant impact on the bottom chute and conveyor belt as raw coal is unloaded from the upper conveyor drop point to the lower chute. This can cause frequent damage to the lower chute and severely damage the main coal flow conveyor belt, leading to belt tears and even subsequent coal spillage, belt wear, burying of the machine tail, and belt breakage. Furthermore, the large drop during coal unloading through the chute poses a risk of injury if the chute is not adequately protected. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a coal chute with multi-stage buffer function, including a feed inlet and a connecting pipe set at the bottom of the feed inlet. By setting the feed inlet, the connecting pipe can be connected to the discharge port of the raw coal crusher, so that the crushed raw coal can enter the inner cavity of the connecting pipe.

[0005] The dust removal and buffer mechanism is used to remove dust from the crushed raw coal. By setting up the dust removal and buffer mechanism, the raw coal fragments discharged from the connecting pipe can be buffered, and the dust and particulate matter in the raw coal can be absorbed and collected. As the raw coal accumulates, the dust and particulate matter are removed.

[0006] The anti-clogging mechanism is used to prevent raw coal from clogging in the dust removal buffer mechanism. The packaging box is set on the outer surface of the anti-clogging mechanism. By setting the anti-clogging mechanism, the raw coal can enter the connecting pipe and use its weight to discharge the dust and particulate matter in the dust removal buffer mechanism. At the same time, when too much raw coal accumulates in the dust removal buffer mechanism, it applies a squeezing force to the raw coal inside, thereby preventing the raw coal from clogging.

[0007] The discharge mechanism is used to provide secondary buffering for the raw materials. By setting up the discharge mechanism, the leaking raw coal is buffered in a secondary manner, thereby preventing the raw coal from falling too fast due to the excessive length of the coal chute. Ultimately, this prevents the impact on the bottom chute and the conveyor belt in the main roadway from being too large due to the excessive falling speed.

[0008] The dust removal and buffer mechanism includes a first connection port, which is fixedly connected to the bottom of the inner wall of the connecting pipe. A ventilator is fixedly connected to the outer surface of the first connection port. A sliding funnel is slidably connected to the inner cavity of the ventilator. A spiral buffer pipe is fixedly connected to the discharge port of the sliding funnel. By setting the ventilator, dust and particulate matter in the raw coal that enters the inner cavity of the ventilator through the connecting pipe and the first connection port can be allowed to flow through the holes on the surface of the ventilator to the external space of the ventilator. By setting the spiral buffer pipe and adopting a spiral descent method, the falling speed of the raw coal can be greatly reduced.

[0009] Preferably, a connecting rod is fixedly connected to the lower surface of the feed inlet, a threaded tube penetrates the upper surface of the connecting pipe, the connecting rod is threadedly connected to the inner cavity of the threaded tube, the dust removal buffer mechanism is disposed in the inner cavity of the connecting pipe, the package box is fixedly connected to the outer surface of the connecting pipe, and the discharge mechanism is disposed at the bottom of the dust removal buffer mechanism.

[0010] Preferably, a buffer funnel is fixedly installed in the middle of the inner wall of the connecting pipe, a material-permeable cone is fixedly connected to the inner wall of the venting cylinder, a guide column is fixedly connected to the bottom of the inner cavity of the material-permeable cone, the top of the guide column is located in the inner cavity of the buffer funnel, a blocking disc is slidably connected to the outer surface of the guide column, the blocking disc is squeezed and adapted to the lower surface of the first connection port, and an alloy spring is sleeved on the outer surface of the guide column, the top of the alloy spring is fixedly connected to the lower surface of the blocking disc.

[0011] Preferably, a second connection port is fixedly connected to the bottom of the inner wall of the ventilator, a limit block is fixedly connected to the outer surface of the second connection port, a sliding shell is slidably connected to the outer surface of the limit block, a sliding tube is fixedly connected to the outer surface of the sliding shell, a first spring rod is fixedly connected to the top surface of the inner cavity of the sliding shell, the first spring rod is sleeved in the inner cavity of the limit block, a connecting frame is fixedly connected to the outer surface of the bottom end of the spiral buffer tube, the connecting frame is fixedly connected to the inner wall of the sliding tube, and a sealing ring is fixedly connected to the outer surface of the sliding funnel, the sealing ring being frictionally adapted to the inner wall of the ventilator.

[0012] Preferably, the anti-clogging mechanism includes a first sealing ring, which is fixedly connected to the top end of the sliding tube. The first sealing ring is frictionally adapted to the inner wall of the package box. A first support rod is fixedly connected to the upper surface of the first sealing ring. A second sealing ring is fixedly connected to the top end of the first support rod. The second sealing ring is frictionally adapted to the inner wall of the package box. A second support rod is fixedly connected to the upper surface of the first sealing ring.

[0013] Preferably, a rolling bearing is fixedly connected to the top end of the second support rod, a rotating rod is fixedly connected to the inner ring of the rolling bearing, a fan plate is fixedly connected to the outer surface of the rotating rod, one-way bearings are symmetrically fixedly connected to both ends of the rotating rod, a toothed ring is fixedly connected to the outer ring of the one-way bearing, and a rack is fixedly connected to the inner wall of the package box, with the toothed ring meshing with the rack.

[0014] Preferably, the outer surface of the package box is permeated by a ash discharge box, the upper surface of the ash discharge box is provided with a track groove, the upper surface of the second sealing ring is fixedly connected with a pressing rod, the pressing rod is slidably connected to the track groove on the upper surface of the ash discharge box, and a dredging mechanism is provided in the inner cavity of the ash discharge box.

[0015] Preferably, the unblocking mechanism includes a positioning strip, which is fixedly connected to the inner wall of the ash discharge box. A second spring rod is fixedly connected to the outer surface of the positioning strip. A blocking plate is fixedly connected to the end of the second spring rod. A blocking ring is fixedly connected to the outer surface of the blocking plate. The blocking ring is squeezed and adapted to the inner wall of the ash discharge box. The squeezing rod is squeezed and adapted to the upper surface of the blocking plate.

[0016] Preferably, the unblocking mechanism further includes a third support rod, which is fixedly connected to the outer surface of the ash discharge box. A stepper motor is fixedly connected to the end of the third support rod. A rotating column is installed at the output end of the stepper motor through a coupling. A gear is fixedly connected to the end of the rotating column. The gear passes through the package box and meshes with a gear ring.

[0017] Preferably, the discharge mechanism includes a buffer discharge pipe, which is disposed in the inner cavity of the sliding tube. A third spring rod is fixedly connected to the top of the outer surface of the buffer discharge pipe. The third spring rod passes through the bottom surface of the inner cavity of the sliding tube. Inclined plates are spaced apart on the inner wall of the buffer discharge pipe. A connecting pipe is fixedly connected to the lower surface of the buffer discharge pipe. A discharge box passes through the lower surface of the connecting pipe.

[0018] This invention provides a coal chute with multi-stage buffering function. It has the following beneficial effects:

[0019] I. This coal chute with multi-stage buffering function can buffer the raw coal fragments discharged from the connecting pipe by setting a dust removal buffer mechanism. At the same time, it can absorb and collect dust and particulate matter in the raw coal, and remove dust and particulate matter as the raw coal accumulates.

[0020] Second, this coal chute with multi-stage buffer function, by setting an anti-clogging mechanism, can enter the connecting pipe with the raw coal and use the weight of the raw coal to achieve the effect of discharging dust and particulate matter in the dust removal buffer mechanism. At the same time, when too much raw coal accumulates in the dust removal buffer mechanism, it applies compressive force to the raw coal accumulated inside, thereby achieving the effect of preventing raw coal blockage.

[0021] Third, this coal chute with multi-stage buffering function, through the setting of a discharge mechanism, provides secondary buffering for the leaked raw coal, thereby preventing the raw coal from falling too fast due to the excessive length of the coal chute, and ultimately preventing the impact on the bottom chute and the conveyor belt of the main roadway from being too large due to the excessive falling speed.

[0022] Fourth, this coal chute with multi-stage buffering function can buffer the raw coal entering the connecting pipe by setting a buffer funnel. At the same time, it can guide the flow of raw coal in the direction of the guide column. By setting the guide column, it can guide the flow of raw coal in the inner cavity of the connecting pipe and play a certain buffering effect. The impact of raw coal on the outer surface of the guide column can play a role in unloading force. At the same time, it can limit the blockage plate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure of a coal chute with multi-level buffering function according to the present invention.

[0024] Figure 2 This is a side view of the structure of a coal chute with multi-level buffering function according to the present invention;

[0025] Figure 3 This is a schematic diagram of a cross-sectional structure of a coal chute with multi-level buffering function according to the present invention.

[0026] Figure 4 This is a schematic diagram of the dust removal buffer mechanism of the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the dust removal buffer mechanism of the present invention;

[0028] Figure 6 This is a partial structural diagram of the dust removal buffer mechanism of the present invention;

[0029] Figure 7 This is a schematic diagram of the anti-clogging mechanism of the present invention;

[0030] Figure 8 This is a partial structural diagram of the anti-clogging mechanism of the present invention;

[0031] Figure 9 This is a partial cross-sectional structural diagram of the anti-clogging mechanism of the present invention;

[0032] Figure 10 This is a schematic diagram of the unblocking mechanism of the present invention;

[0033] Figure 11 This is a schematic diagram of the material discharge mechanism of the present invention.

[0034] In the diagram: 1. Feed inlet; 2. Connecting pipe; 3. Connecting rod; 4. Threaded pipe; 5. Buffer funnel; 6. Dust removal and buffer mechanism; 7. Anti-clogging mechanism; 8. Discharge mechanism; 9. Packing box; 61. First connection port; 62. Vent pipe; 63. Second connection port; 64. Limiting block; 65. Through-feed cone; 66. Guide column; 67. Alloy spring; 68. Clogging disc; 69. Sliding pipe; 610. Sliding housing; 611. First spring rod; 612. Connecting frame; 613. Spiral buffer pipe; 614. Sliding funnel; 615. Sealing ring; 71. First sealing ring; 72. First support. 73. Support rod; 74. Second sealing ring; 75. Extrusion rod; 76. Ash discharge box; 77. Track groove; 78. Unblocking mechanism; 79. Rack; 70. Second support rod; 710. Rolling bearing; 711. Rotating rod; 712. Fan plate; 713. One-way bearing; 714. Gear ring; 771. Positioning strip; 772. Second spring rod; 773. Blocking plate; 774. Blocking ring; 775. Third support rod; 776. Stepper motor; 777. Rotating column; 778. Gear; 81. Buffer discharge pipe; 82. Third spring rod; 83. Inclined plate; 84. Connecting pipe; 85. Discharge box. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0036] like Figures 1-11 As shown, the present invention provides a technical solution: a coal chute with multi-stage buffer function, including a feed inlet 1 and a connecting pipe 2 set at the bottom of the feed inlet 1. By setting the feed inlet 1, the connecting pipe 2 can be connected to the discharge port of the raw coal crusher, so that the crushed raw coal can enter the inner cavity of the connecting pipe 2.

[0037] The dust removal buffer mechanism 6 is used to remove dust from the crushed raw coal. By setting the dust removal buffer mechanism 6, the raw coal fragments discharged from the connecting pipe 2 can be buffered, and the dust and particulate matter in the raw coal can be absorbed and collected. As the raw coal accumulates, the dust and particulate matter can be removed.

[0038] The anti-clogging mechanism 7 is used to prevent the raw coal from clogging in the dust removal buffer mechanism 6. The packaging box 9 is set on the outer surface of the anti-clogging mechanism 7. By setting the anti-clogging mechanism 7, the raw coal can enter the connecting pipe 2 and the weight of the raw coal can be used to discharge the dust and powder in the dust removal buffer mechanism 6. At the same time, when too much raw coal accumulates in the dust removal buffer mechanism 6, the internal raw coal is compressed to prevent the raw coal from clogging.

[0039] The discharge mechanism 8 is used to buffer the raw materials in a secondary manner. By setting the discharge mechanism 8, the leaked raw coal is buffered in a secondary manner, thereby preventing the raw coal from falling too fast due to the excessive length of the coal chute. Ultimately, this prevents the impact on the bottom chute and the belt conveyor in the main roadway from being too large due to the excessive falling speed.

[0040] The dust removal buffer mechanism 6 includes a first connection port 61, which is fixedly connected to the bottom of the inner wall of the connecting pipe 2. A ventilator 62 is fixedly connected to the outer surface of the first connection port 61. A sliding funnel 614 is slidably connected to the inner cavity of the ventilator 62. A spiral buffer pipe 613 is fixedly connected to the discharge port of the sliding funnel 614. By setting the ventilator 62, dust and particulate matter in the raw coal that enters the inner cavity of the ventilator 62 through the connecting pipe 2 and the first connection port 61 can be allowed to flow through the holes on the surface of the ventilator 62 to the external space of the ventilator 62. By setting the spiral buffer pipe 613 and adopting a spiral descent method, the falling speed of the raw coal can be greatly reduced.

[0041] A connecting rod 3 is fixedly connected to the lower surface of the feed inlet 1, and a threaded pipe 4 passes through the upper surface of the connecting pipe 2. The connecting rod 3 is threaded into the inner cavity of the threaded pipe 4. The dust removal buffer mechanism 6 is set in the inner cavity of the connecting pipe 2. The wrapping box 9 is fixedly connected to the outer surface of the connecting pipe 2. The discharge mechanism 8 is set at the bottom of the dust removal buffer mechanism 6. By setting the threaded pipe 4 and the connecting rod 3, the feed inlet 1 and the connecting pipe 2 can be tightly connected together. By setting the wrapping box 9, the air vent 62 can be wrapped.

[0042] A buffer funnel 5 is fixedly installed in the middle of the inner wall of the connecting pipe 2. A material-permeable cone 65 is fixedly connected to the inner wall of the venting cylinder 62. A guide column 66 is fixedly connected to the bottom of the inner cavity of the material-permeable cone 65. The top of the guide column 66 is located in the inner cavity of the buffer funnel 5. A blocking disc 68 is slidably connected to the outer surface of the guide column 66. The blocking disc 68 is squeezed and adapted to the lower surface of the first connection port 61. An alloy spring 67 is sleeved on the outer surface of the guide column 66. The top of the alloy spring 67 is fixedly connected to the lower surface of the blocking disc 68. By setting the buffer funnel 5, the raw coal entering the connecting pipe 2 can be buffered, and the raw coal can be directed to the direction of the guide column 66. By setting the guide column 66, the raw coal in the inner cavity of the connecting pipe 2 can be guided and buffered. The impact of the raw coal on the outer surface of the guide column 66 can relieve the force. At the same time, it can limit the blocking plate 68. By setting the blocking plate 68 and the alloy spring 67, the raw coal falling into the interior can be buffered. When the outside air enters the inner cavity of the packaging box 9, the blocking plate 68 moves upward on the outer surface of the guide column 66 and finally blocks the lower surface of the first connection port 61, thereby preventing the raw coal from flowing in again and allowing the air to flow downward. The bottom of the inner wall of the vent 62 is fixedly connected to the second connection port. 63. A limiting block 64 is fixedly connected to the outer surface of the second connection port 63. A sliding housing 610 is slidably connected to the outer surface of the limiting block 64. A sliding tube 69 is fixedly connected to the outer surface of the sliding housing 610. A first spring rod 611 is fixedly connected to the top surface of the inner cavity of the sliding housing 610. The first spring rod 611 is sleeved in the inner cavity of the limiting block 64. A connecting frame 612 is fixedly connected to the outer surface of the bottom end of the spiral buffer tube 613. The connecting frame 612 is fixedly connected to the inner wall of the sliding tube 69. A sealing ring 615 is fixedly connected to the outer surface of the sliding funnel 614. The sealing ring 615 is frictionally adapted to the inner wall of the vent 62. By setting the limiting block 614, a limiting block is formed. Block 64 can limit the sliding shell 610, allowing the sliding shell 610 and the sliding tube 69 to move vertically up and down between the second connection port 63 and the limiting block 64. By setting the connecting frame 612, the spiral buffer tube 613 can be connected to the sliding tube 69. When raw coal accumulates in the inner cavity of the spiral buffer tube 613, the sliding tube 69 and the sliding shell 610 will move downward. By setting the first spring rod 611, elastic potential energy can be stored when the sliding shell 610 moves downward. After the raw coal in the spiral buffer tube 613 no longer accumulates, the spiral buffer tube 613 will move upward.

[0043] The anti-clogging mechanism 7 includes a first sealing ring 71, which is fixedly connected to the top end of the sliding tube 69. The first sealing ring 71 is frictionally adapted to the inner wall of the package box 9. A first support rod 72 is fixedly connected to the upper surface of the first sealing ring 71. A second sealing ring 73 is fixedly connected to the top end of the first support rod 72. The second sealing ring 73 is frictionally adapted to the inner wall of the package box 9. A second support rod 79 is fixedly connected to the upper surface of the first sealing ring 71. By setting the first sealing ring 71 and the second sealing ring 73, the space between the package box 9 and the first sealing ring 71 and the second sealing ring 73 can be sealed. A rolling bearing 710 is fixedly connected to the top end of the second support rod 79. A rotating rod 711 is fixedly connected to the inner ring of the rolling bearing 710. The outer surface of the rotating rod 711 is fixedly connected to... The fan plate 712 has a rotating rod 711 with one-way bearings 713 fixedly connected to both ends. A gear ring 714 is fixedly connected to the outer ring of the one-way bearing 713. A rack 78 is fixedly connected to the inner wall of the packaging box 9. The gear ring 714 meshes with the rack 78. By setting a rolling bearing 710, the rotating rod 711 can drive the fan plate 712 to rotate stably. By setting a one-way bearing 713, when the gear ring 714 moves from top to bottom on the outer surface of the rack 78, the gear ring 714 drives the inner ring of the one-way bearing 713 and the rotating rod 711 to rotate, ultimately causing the fan plate 712 to rotate and generate airflow. When the gear ring 714 moves from bottom to top on the outer surface of the rack 78, the gear ring 714 will not drive the inner ring of the one-way bearing 713 and the rotating rod 711 to rotate.

[0044] A dust discharge box 75 extends through the outer surface of the parcel box 9. A track groove 76 is formed on the upper surface of the dust discharge box 75. A pressing rod 74 is fixedly connected to the upper surface of the second sealing ring 73. The pressing rod 74 is slidably connected to the track groove 76 on the upper surface of the dust discharge box 75. A drainage mechanism 77 is provided in the inner cavity of the dust discharge box 75. By providing the dust discharge box 75, when circulation occurs inside the parcel box 9, dust and particulate matter inside the parcel box 9 can be discharged through the dust discharge box 75. The drainage mechanism 77 includes a positioning strip 7. 71. A positioning strip 771 is fixedly connected to the inner wall of the ash discharge box 75. A second spring rod 772 is fixedly connected to the outer surface of the positioning strip 771. A blocking plate 773 is fixedly connected to the end of the second spring rod 772. A blocking ring 774 is fixedly connected to the outer surface of the blocking plate 773. The blocking ring 774 is pressed and adapted to the inner wall of the ash discharge box 75. The pressing rod 74 is pressed and adapted to the upper surface of the blocking plate 773. By setting the pressing rod 74, when the second sealing ring 73 moves downward, the pressing rod 74 can clear the blockage. The blocking plate 773 in mechanism 77 is compressed, causing it to press tightly against the inner wall of the ash discharge box 75, thereby closing the opening of the ash discharge box 75. By setting the blocking plate 773 and the blocking ring 774, when the fan plate 712 rotates and generates airflow, the blocking plate 773 and the blocking ring 774 are compressed, opening the ash discharge box 75 and allowing dust to be discharged. The unblocking mechanism 77 also includes a third support rod 775, which is fixedly connected to the outer surface of the ash discharge box 75. A stepper motor 776 is fixedly connected to the end of the third support rod 775. A rotating column 777 is installed at the output end of the stepper motor 776 through a coupling. A gear 778 is fixedly connected to the end of the rotating column 777. The gear 778 passes through the package box 9 and meshes with the gear ring 714. By setting the stepper motor 776, after the power is connected and the switch is turned on, the rotating column 777 drives the gear 778 to rotate, thereby causing the gear ring 714 to rotate and the fan plate 712 to rotate rapidly.

[0045] The discharge mechanism 8 includes a buffer discharge pipe 81, which is located inside the sliding pipe 69. A third spring rod 82 is fixedly connected to the top of the outer surface of the buffer discharge pipe 81. The third spring rod 82 passes through the bottom surface of the inner cavity of the sliding pipe 69. Inclined plates 83 are spaced apart on the inner wall of the buffer discharge pipe 81. A connecting pipe 84 is fixedly connected to the lower surface of the buffer discharge pipe 81. A discharge box 85 passes through the lower surface of the connecting pipe 84. By setting multiple inclined plates 83, the downward flow speed of the raw coal can be reduced without hindering the discharge and flow of the raw coal. By setting the connecting pipe 84 and the discharge box 85, the buffered raw coal can flow to the bottom chute and the belt conveyor in the main roadway.

[0046] Working principle: During the installation phase, the operator connects the feed inlet 1 to the discharge outlet of the raw coal crusher and connects the discharge box 85 to the bottom chute and the conveyor belt in the main roadway. When the raw coal, after being crushed by the raw coal crusher, enters the inner cavity of the buffer funnel 5 through the connecting pipe 2, the raw coal is buffered to a certain extent and finally flows to the outer surface of the guide column 66. Then, the impact of the blocking plate 68 further buffers the falling speed of the raw coal. At the same time, the dust and powder adhering to the outer surface of the raw coal are shaken off and float in the air. In the process, the coal eventually flows into the inner cavity of the sliding funnel 614 and the spiral buffer tube 613. As the raw coal slides into the inner cavity of the spiral buffer tube 613, the sliding tube 69 moves downward due to gravity. During the movement, the toothed ring 714 meshes with the rack 78, which eventually causes the rotating rod 711 and the fan plate 712 to rotate, thereby generating airflow in the inner cavity of the packaging box 9. Under the influence of the airflow, the blocking plate 773 and the blocking ring 774 no longer block the ash discharge box 75, thus allowing the air mixed with dust and powder in the inner cavity of the packaging box 9 to be discharged. After passing through the ash discharge box 75, the raw coal in the inner cavity of the spiral buffer pipe 613 flows to the bottom opening and finally falls into the inner cavity of the buffer discharge pipe 81. Through the layered buffering of the inclined plate 83, it is finally discharged from the connecting pipe 84 and the discharge box 85 to the bottom chute and the conveyor belt in the main roadway. When the raw coal inside the spiral buffer pipe 613 becomes blocked, the weight accumulation causes the sliding pipe 69 to be at its lowest position. At this time, the toothed ring 714 no longer meshes with the rack 78, but with the gear 778. Under the operation of the stepper motor 776, the rotating column 777... The gear 778 rotates, causing the fan plate 712 and the rotating rod 711 to rotate at high speed. Since the sliding tube 69 is at the bottom, the second sealing ring 73 will drive the extrusion rod 74 to extrude the blocking plate 773, thereby causing the blocking plate 773 to seal the ash discharge box 75. At the same time, under the influence of airflow, the blocking disc 68 will move upward on the outer surface of the guide column 66, thereby allowing the air in the inner cavity of the enclosing box 9 to enter the inner cavity of the spiral buffer tube 613, thereby causing the raw coal blocked inside to be impacted and achieving the effect of unblocking.

[0047] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A coal chute with multi-stage buffering function, characterized in that, include: The feed inlet (1) and the connecting pipe (2) located at the bottom of the feed inlet (1); Dust removal buffer mechanism (6) is used to remove dust from the crushed raw coal; Anti-clogging mechanism (7), which is used to prevent raw coal from clogging in the dust removal buffer mechanism (6), and a package box (9) set on the outer surface of the anti-clogging mechanism (7); The material discharge mechanism (8) is used for secondary buffering of the raw materials; The dust removal buffer mechanism (6) includes a first connection port (61), which is fixedly connected to the bottom of the inner wall of the connecting pipe (2). A ventilator (62) is fixedly connected to the outer surface of the first connection port (61). A sliding funnel (614) is slidably connected to the inner cavity of the ventilator (62). A spiral buffer pipe (613) is fixedly connected to the discharge port of the sliding funnel (614). A buffer funnel (5) is fixedly installed in the middle of the inner wall of the connecting pipe (2). A material-permeable cone (65) is fixedly connected to the inner wall of the air-permeable cylinder (62). A guide column (66) is fixedly connected to the bottom of the inner cavity of the material-permeable cone (65). The top of the guide column (66) is located in the inner cavity of the buffer funnel (5). A blocking disc (68) is slidably connected to the outer surface of the guide column (66). The blocking disc (68) is squeezed and adapted to the lower surface of the first connection port (61). An alloy spring (67) is sleeved on the outer surface of the guide column (66). The top of the alloy spring (67) is fixedly connected to the lower surface of the blocking disc (68). The bottom of the inner wall of the ventilator (62) is fixedly connected to a second connection port (63), and a limit block (64) is fixedly connected to the outer surface of the second connection port (63). A sliding shell (610) is slidably connected to the outer surface of the limit block (64), and a sliding tube (69) is fixedly connected to the outer surface of the sliding shell (610). A first spring rod (611) is fixedly connected to the top surface of the inner cavity of the sliding shell (610). The first spring rod (611) is sleeved in the inner cavity of the limit block (64). A connecting frame (612) is fixedly connected to the outer surface of the bottom end of the spiral buffer tube (613). The connecting frame (612) is fixedly connected to the inner wall of the sliding tube (69). A sealing ring (615) is fixedly connected to the outer surface of the sliding funnel (614). The sealing ring (615) is frictionally adapted to the inner wall of the ventilator (62). The anti-clogging mechanism (7) includes a first sealing ring (71), which is fixedly connected to the top end of the sliding tube (69). The first sealing ring (71) is frictionally adapted to the inner wall of the package box (9). A first support rod (72) is fixedly connected to the upper surface of the first sealing ring (71). A second sealing ring (73) is fixedly connected to the top end of the first support rod (72). The second sealing ring (73) is frictionally adapted to the inner wall of the package box (9). A second support rod (79) is fixedly connected to the upper surface of the first sealing ring (71). A rolling bearing (710) is fixedly connected to the top end of the second support rod (79). A rotating rod (711) is fixedly connected to the inner ring of the rolling bearing (710). A fan plate (712) is fixedly connected to the outer surface of the rotating rod (711). One-way bearings (713) are symmetrically fixedly connected to both ends of the rotating rod (711). A toothed ring (714) is fixedly connected to the outer ring of the one-way bearing (713). A rack (78) is fixedly connected to the inner wall of the package box (9). The toothed ring (714) meshes with the rack (78). The outer surface of the package box (9) is penetrated by a ash discharge box (75). The upper surface of the ash discharge box (75) is provided with a track groove (76). The upper surface of the second sealing ring (73) is fixedly connected with a pressing rod (74). The pressing rod (74) is slidably connected to the track groove (76) on the upper surface of the ash discharge box (75). The inner cavity of the ash discharge box (75) is provided with a dredging mechanism (77).

2. A coal chute with multi-stage buffering function according to claim 1, characterized in that: A connecting rod (3) is fixedly connected to the lower surface of the feed inlet (1), and a threaded pipe (4) passes through the upper surface of the connecting pipe (2). The connecting rod (3) is threadedly connected to the inner cavity of the threaded pipe (4). The dust removal buffer mechanism (6) is located in the inner cavity of the connecting pipe (2). The package box (9) is fixedly connected to the outer surface of the connecting pipe (2). The discharge mechanism (8) is located at the bottom of the dust removal buffer mechanism (6).

3. A coal chute with multi-stage buffering function according to claim 1, characterized in that: The unblocking mechanism (77) includes a positioning strip (771), which is fixedly connected to the inner wall of the ash discharge box (75). A second spring rod (772) is fixedly connected to the outer surface of the positioning strip (771). A blocking plate (773) is fixedly connected to the end of the second spring rod (772). A blocking ring (774) is fixedly connected to the outer surface of the blocking plate (773). The blocking ring (774) is squeezed and adapted to the inner wall of the ash discharge box (75). The squeezing rod (74) is squeezed and adapted to the upper surface of the blocking plate (773).

4. A coal chute with multi-stage buffering function according to claim 3, characterized in that: The unblocking mechanism (77) also includes a third support rod (775), which is fixedly connected to the outer surface of the ash discharge box (75). A stepper motor (776) is fixedly connected to the end of the third support rod (775). A rotating column (777) is installed at the output end of the stepper motor (776) through a coupling. A gear (778) is fixedly connected to the end of the rotating column (777). The gear (778) passes through the package box (9) and meshes with the gear ring (714).

5. A coal chute with multi-stage buffering function according to claim 4, characterized in that: The discharge mechanism (8) includes a buffer discharge pipe (81), which is located in the inner cavity of the sliding pipe (69). A third spring rod (82) is fixedly connected to the top of the outer surface of the buffer discharge pipe (81). The third spring rod (82) passes through the bottom surface of the inner cavity of the sliding pipe (69). Inclined plates (83) are spaced apart on the inner wall of the buffer discharge pipe (81). A connecting pipe (84) is fixedly connected to the lower surface of the buffer discharge pipe (81). A discharge box (85) passes through the lower surface of the connecting pipe (84).

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