Coal conveying and dropping pipe device

Abstract

The invention relates to the technical field of coal conveying and transferring, and discloses a coal conveying and falling pipe device which comprises a coal falling pipe body. The mounting sleeve is fixedly mounted on the outer wall of the coal drop pipe body; the servo motor is fixedly mounted on the inner wall of the mounting sleeve; the two flywheels are fixedly mounted at the two output ends of the servo motor respectively; the two groups of knocking structures are arranged on the coal dropping pipe body and are used for knocking the coal dropping pipe body; when the servo motor rotates reversely, the reciprocating lead screw can be driven to rotate through matched use of the two one-way bearings, the sliding plate is in sliding connection with the guide rod and is in threaded connection with the reciprocating lead screw through the connecting plate, so that the sliding plate can slide back and forth along the guide rod, and the reciprocating sliding effect is good. The coal passing rod can reciprocate in the coal falling pipe body along the receding opening, blocked coal is effectively dredged, the dredging efficiency is improved, and the stability and reliability of equipment in the dredging process are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of coal transportation and transfer, and in particular to a coal conveying and dropping pipe device. Background Art

[0002] Coal conveyor and coal drop pipe is a general term for coal transportation pipelines in coal, ports, thermal power, coal dump stations, coal washing plants, coal-fired industrial boilers and other industries. It is one of the key equipment for coal transmission and transportation. The main function of the coal conveyor and coal drop pipe is to transport coal from one place to another safely and efficiently.

[0003] After searching, the Chinese patent with announcement number CN210709429U discloses a coal drop pipe for a coal transportation system, the coal drop pipe includes a collecting cover, a shunt pipe and at least one drop pipe body, the shunt pipe has an input end and an output end, the drop pipe body is a hollow structure with upper and lower openings, the collecting cover is connected to the input end of the shunt pipe, the upper end opening of the drop pipe body is connected to the output end of the shunt pipe, the lower end opening of the drop pipe body forms a drop opening, the drop pipe body defines a flow channel for conveying dropped coal, the drop pipe body has two side plates, a back plate and a cover plate, the back plate and the cover plate are arranged opposite to each other, the back plate has a straight back plate located upstream and a curved back plate located downstream, the curved back plate is formed on the lower side of the straight back plate, but this scheme still has the following shortcomings when actually used: In the process of coal transportation, the coal conveyor drop pipe is a key equipment connecting various transfer nodes, and its operating efficiency directly affects the stability and production efficiency of the entire coal processing system. However, in actual operation, due to the ups and downs of coal in the coal conveyor drop pipe, friction, and uneven size of coal blocks, coal often gets blocked in the pipeline. This blockage will reduce the transportation efficiency of coal and increase the energy consumption of the system. At the same time, when the coal conveyor drop pipe is blocked, the traditional method is to rely on manual unblocking by staff. This unblocking method is not only inefficient, but also requires a lot of manpower and material resources, and there are certain safety hazards.

[0004] Therefore, it is necessary to design a coal conveying and coal dropping pipe device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a coal conveying and dropping pipe device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A coal conveying and dropping pipe device, comprising: Coal drop pipe body; A mounting sleeve, fixedly mounted on the outer wall of the coal dropping pipe body; A servo motor is fixedly mounted on the inner wall of the mounting sleeve; Two flywheels are respectively fixedly mounted on two output ends of the servo motor; Two sets of knocking structures are arranged on the coal dropping pipe body and are used to knock the coal dropping pipe body; A coal passage structure, arranged on the side wall of the coal dropping pipe body, for unclogging the coal dropping pipe body; Three groups of adjustment structures are distributed in a linear array on the coal passing structure, and the adjustment structures are used in conjunction with the coal passing structure to adapt to different coal blocking conditions of the coal dropping pipe body.

[0007] As a preferred technical solution of the present invention, the knocking structure includes: A fixing frame, fixedly mounted on the side wall of the coal dropping pipe body; A transmission shaft rotatably mounted between opposite sides of the fixing frame; Two knocking rods are symmetrically fixedly mounted on the outer wall of the transmission shaft; A shift plate, fixedly mounted on the outer wall of the transmission shaft; A drive shaft rotatably mounted between opposite sides of the fixing frame, and one end of the drive shaft passes through the fixing frame; Two driving plates are symmetrically fixedly mounted on the outer wall of the driving shaft, and the driving plates are adapted to the shifting plates; Two torsion springs are respectively mounted on the two ends of the transmission shaft, and the two ends of the torsion spring are respectively fixedly connected to the transmission shaft and the fixing frame.

[0008] As a preferred technical solution of the present invention, a knocking head is fixedly mounted on one end of the knocking rod away from the transmission shaft, and the outer wall of the knocking head is covered with a rubber pad.

[0009] As a preferred technical solution of the present invention, the connection between the knocking rod, the paddle and the transmission shaft is vertically arranged.

[0010] As a preferred technical solution of the present invention, the coal passage structure comprises: A bracket, fixedly mounted on the side of the coal dropping pipe body and located at the side edge of the mounting sleeve; A reciprocating screw, rotatably mounted on the inner wall of the bracket; Four guide rods are fixedly mounted on the side of the coal dropping pipe body; A slide plate, slidably mounted on the four guide rods; A connecting plate, fixedly mounted on the side of the slide plate, the end of the reciprocating screw passing through the connecting plate and being screwed to the connecting plate; Two one-way bearings are respectively fixedly mounted on the sides of the two flywheels, and the end of the reciprocating screw is fixedly connected to the inner wall of one of the one-way bearings.

[0011] As a preferred technical solution of the present invention, a limiting plate is fixedly mounted on one end of the guide rod away from the coal dropping pipe body.

[0012] As a preferred technical solution of the present invention, driven wheels are fixedly mounted on one end of the two transmission shafts located outside the fixing frame and on the inner wall of the other one-way bearing, and synchronous belts are mounted on the three driven wheels.

[0013] As a preferred technical solution of the present invention, the regulating structure includes: A fixed sleeve, fixedly mounted on the side of the slide plate opposite to the coal dropping pipe body; An adjusting screw is arranged inside the fixing sleeve; Two guide grooves are symmetrically arranged on the inner wall of the fixed sleeve; Two guide blocks are symmetrically fixedly mounted on one end of the adjusting screw located inside the fixed sleeve, and the guide blocks are slidably connected to the guide grooves; A threaded sleeve is rotatably mounted on an end of the fixed sleeve away from the slide plate, and the threaded sleeve is threadedly connected to the adjusting screw; The coal-passing rod is fixedly mounted on one end of the adjusting screw rod located outside the fixing sleeve.

[0014] As a preferred technical solution of the present invention, a side surface of the coal drop pipe body is provided with a clearance opening adapted to the coal passage rod, and an inner wall of the clearance opening is provided with a sealing rubber ring.

[0015] As a preferred technical solution of the present invention, the width of the slide plate is the same as the width of the coal dropping pipe body.

[0016] The present invention has the following beneficial effects: 1. By setting the coal drop pipe body and the knocking structure, when the servo motor rotates forward, the outer wall of the coal drop pipe body is knocked back and forth through the cooperation of the drive shaft, drive plate, paddle, transmission shaft, knocking rod and knocking head. This knocking action can cause the coal drop pipe body to vibrate, effectively reducing the probability of coal blockage during transportation, ensuring the stability of coal transportation, which not only improves the efficiency of coal transportation, but also reduces equipment downtime and maintenance costs caused by blockage; 2. By setting up the coal-passing structure, when the servo motor reverses, the two one-way bearings can be used together to drive the reciprocating screw to rotate. Since the slide plate is slidably connected to the guide rod and is screwed to the reciprocating screw through the connecting plate, the slide plate can slide back and forth along the guide rod. This reciprocating sliding action enables the coal-passing rod to move back and forth along the clearance opening in the coal drop pipe body, effectively clearing the blocked coal, which not only improves the clearing efficiency, but also ensures the stability and reliability of the equipment during the clearing process; 3. By setting up the adjustment structure, when the coal drop pipe is blocked, the staff can adjust the length of the coal rod by rotating the threaded sleeve. Since the threaded sleeve is threadedly connected to the adjusting screw, and the adjusting screw is slidably connected to the fixed sleeve through the guide groove and the guide block, the overall length of the coal rod can be easily adjusted to meet the processing requirements of different blockage situations. This flexible adjustment method makes the equipment more efficient and convenient when dealing with blockage problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a coal conveying and dropping pipe device proposed by the present invention; Figure 2 This is a three-dimensional multi-angle structural schematic diagram of a coal conveying and dropping pipe device proposed by the present invention; Figure 3 A schematic diagram of a three-dimensional partial structure of a coal conveying and dropping pipe device proposed by the present invention; Figure 4 A schematic diagram of the structure of a fixed frame of a coal conveying and dropping pipe device proposed by the present invention; Figure 5 A schematic diagram of a partial cross-section structure of a coal dropping pipe body of a coal conveying and dropping pipe device proposed by the present invention; Figure 6 A schematic diagram of a slide structure of a coal conveying and dropping pipe device proposed by the present invention; Figure 7 for Figure 6 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. coal drop pipe body; 2. mounting sleeve; 3. servo motor; 4. flywheel; 51. fixing frame; 52. transmission shaft; 53. knocking rod; 54. paddle plate; 55. driving shaft; 56. driving plate; 57. torsion spring; 58. driven wheel; 6. knocking head; 71. bracket; 72. reciprocating screw; 73. guide rod; 74. slide plate; 75. connecting plate; 76. limit plate; 77. one-way bearing; 81. fixing sleeve; 82. adjusting screw; 83. guide groove; 84. guide block; 85. threaded sleeve; 86. coal passing rod; 9. clearance opening. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-7 A coal conveying and dropping coal pipe device comprises a coal dropping pipe body 1; a mounting sleeve 2, fixedly mounted on the outer wall of the coal dropping pipe body 1; a servo motor 3, fixedly mounted on the inner wall of the mounting sleeve 2; two flywheels 4, respectively fixedly mounted on two output ends of the servo motor 3; two sets of knocking structures, arranged on the coal dropping pipe body 1, for knocking the coal dropping pipe body 1; a coal passing structure, arranged on the side wall of the coal dropping pipe body 1, for unblocking the coal dropping pipe body 1; three sets of adjusting structures, arranged on the coal passing structure in a linear array, and the adjusting structure and the coal passing structure are used in conjunction with each other to adapt to different coal blocking conditions of the coal dropping pipe body 1; coal can be transported in the coal dropping pipe body 1, and the servo motor 3 can be turned on during the transportation process, and the servo motor 3 is a double The servo motor 3 is a head motor, so when it is turned on for forward rotation, it can drive the two flywheels 4 to rotate at high speed. Since the servo motor 3 and the flywheel 4 are arranged on the side of the coal dropping pipe body 1 through the mounting sleeve 2, the flywheel 4 can drive the coal dropping pipe body 1 to vibrate when it rotates at high speed, so as to ensure that the coal is transported more smoothly in the coal dropping pipe body 1. At the same time, the servo motor 3 can knock on the side wall of the coal dropping pipe body 1 through the knocking structure during the forward operation, effectively avoiding the blockage of coal in the coal dropping pipe body 1. If the coal in the coal dropping pipe body 1 is blocked, the servo motor 3 can be reversed. At this time, the coal passing structure and the adjustment structure can be driven to clear the coal dropping pipe body 1, ensuring that the coal dropping pipe body 1 can transport coal smoothly.

[0021] Reference Figure 3 , Figure 4The knocking structure includes: a fixed frame 51, fixedly mounted on the side wall of the coal falling pipe body 1; a transmission shaft 52, rotatably mounted between the opposite sides of the fixed frame 51; two knocking rods 53, symmetrically fixedly mounted on the outer wall of the transmission shaft 52, and a knocking head 6 is fixedly mounted on the end of the knocking rod 53 away from the transmission shaft 52, and the outer wall of the knocking head 6 is covered with a rubber pad; a paddle 54, fixedly mounted on the outer wall of the transmission shaft 52, and the connection between the knocking rod 53, the paddle 54 and the transmission shaft 52 is vertically arranged; a driving shaft 55, rotatably mounted between the opposite sides of the fixed frame 51, and one end of the driving shaft 55 passes through the fixed frame 51; two driving plates 56, symmetrically fixedly mounted on the outer wall of the driving shaft 55, and the driving plate 56 and the paddle 54 is adapted; two torsion springs 57 are respectively mounted on the two ends of the transmission shaft 52, and the two ends of the torsion spring 57 are respectively fixedly connected to the transmission shaft 52 and the fixed frame 51; when the servo motor 3 rotates forward, it can drive the two driving shafts 55 to rotate. During the rotation of the driving shaft 55, the driving plate 56 thereon can drive the paddle plate 54. When the driving plate 56 contacts the paddle plate 54, the paddle plate 54 can be pressed to drive the transmission shaft 52 to rotate. When the driving plate 56 is separated from the paddle plate 54, the transmission shaft 52 can be reversed under the action of the torsion spring 57, thereby realizing the reciprocating rotation of the knocking rod 53 and the knocking head 6, so that the knocking head 6 can reciprocate and knock on the outer wall of the coal falling pipe body 1, and the coal falling pipe body 1 vibrates to reduce the probability of blockage.

[0022] Reference Figure 3 , Figure 6The coal-passing structure includes: a bracket 71, which is fixedly mounted on the side of the coal-dropping pipe body 1 and located at the side position of the mounting sleeve 2; a reciprocating screw 72, which is rotatably mounted on the inner wall of the bracket 71; four guide rods 73, which are fixedly mounted on the side of the coal-dropping pipe body 1, and a limit plate 76 is fixedly mounted on one end of the guide rod 73 away from the coal-dropping pipe body 1; a slide plate 74, which is slidably sleeved on the four guide rods 73, and the width of the slide plate 74 is the same as the width of the coal-dropping pipe body 1; a connecting plate 75, which is fixedly mounted on the side of the slide plate 74, and the end of the reciprocating screw 72 passes through the connecting plate 75 and is screwed to the connecting plate 75; two one-way bearings 77, which are respectively fixedly mounted on the sides of the two flywheels 4, and the end of the reciprocating screw 72 is fixedly connected to the inner wall of one one-way bearing 77, and two transmission shafts 52 are located at one end of the outer side of the fixed frame 51 and the other one-way bearing. The inner walls of the bearings 77 are fixedly mounted with driven wheels 58, and synchronous belts are mounted on the three driven wheels 58; when the servo motor 3 rotates forward, the one-way bearing 77 connected to the driven wheel 58 is in a locked state, and the one-way bearing 77 connected to the reciprocating screw 72 is in a free state, so the servo motor 3 can drive the driven wheel 58 to rotate but cannot drive the reciprocating screw 72; when the servo motor 3 reverses, with the cooperation of the two one-way bearings 77, the driven wheel 58 cannot rotate but the reciprocating screw 72 can be driven; when the reciprocating screw 72 rotates, the slide plate 74 is slidably connected to the guide rod 73 and is screwed to the reciprocating screw 72 through the connecting plate 75, so that the slide plate 74 can be driven to slide back and forth along the guide rod 73, thereby allowing the coal-clearing rod 86 to slide back and forth along the clearance opening 9 to clear the coal in the coal-dropping pipe body 1.

[0023] Reference Figure 5 , Figure 6 , Figure 6 The adjustment structure includes: a fixed sleeve 81, fixedly mounted on the side of the slide plate 74 opposite to the coal drop pipe body 1; an adjusting screw 82, arranged inside the fixed sleeve 81; two guide grooves 83, symmetrically arranged on the inner wall of the fixed sleeve 81; two guide blocks 84, symmetrically fixedly mounted on one end of the adjusting screw 82 located on the inner side of the fixed sleeve 81, and the guide blocks 84 are slidably connected to the guide grooves 83; a threaded sleeve 85, rotatably mounted on the end of the fixed sleeve 81 away from the slide plate 74, and the threaded sleeve 85 is screwed to the adjusting screw 82; a coal passing rod 86, fixed Installed at the end of the adjusting screw 82 located outside the fixed sleeve 81, a clearance opening 9 adapted to the coal-passing rod 86 is opened on the side of the coal-dropping pipe body 1, and a sealing rubber ring is provided on the inner wall of the clearance opening 9; the threaded sleeve 85 is rotated, the threaded sleeve 85 is threadedly connected with the adjusting screw 82, and the adjusting screw 82 is slidably connected with the fixed sleeve 81 through the guide groove 83 and the guide block 84, so when the threaded sleeve 85 rotates, it can drive the adjusting screw 82 and the coal-passing rod 86 to slide along the fixed sleeve 81, thereby adjusting the overall length of the fixed sleeve 81 and the coal-passing rod 86.

[0024] The specific working principle of the present invention is as follows: When in use, coal can be transported in the coal dropping pipe body 1. During the transportation process, the servo motor 3 can be turned on. The servo motor 3 is a double-headed motor, so when it is turned on for forward rotation, it can drive the two flywheels 4 to rotate at high speed. Since the servo motor 3 and the flywheel 4 are arranged on the side of the coal dropping pipe body 1 through the mounting sleeve 2, the flywheel 4 can drive the coal dropping pipe body 1 to vibrate when it rotates at high speed, so as to ensure that the coal is transported more smoothly in the coal dropping pipe body 1. At the same time, the servo motor 3 can knock the side wall of the coal dropping pipe body 1 through the knocking structure during the forward operation, effectively avoiding the blockage of the coal in the coal dropping pipe body 1. If the coal in the coal dropping pipe body 1 is blocked, the servo motor 3 can be reversed. At this time, the coal passing structure and the adjustment structure can be driven to clear the coal dropping pipe body 1, ensuring that the coal dropping pipe body 1 can transport the coal smoothly. Specifically, when the servo motor 3 rotates forward, it can drive the two driving shafts 55 to rotate. During the rotation of the driving shaft 55, the driving plate 56 thereon can drive the paddle plate 54. When the driving plate 56 contacts the paddle plate 54, it can press the paddle plate 54 to drive the transmission shaft 52 to rotate. When the driving plate 56 is separated from the paddle plate 54, the transmission shaft 52 can be reversed under the action of the torsion spring 57, thereby realizing the reciprocating rotation of the knocking rod 53 and the knocking head 6, so that the knocking head 6 can reciprocately knock on the outer wall of the coal falling pipe body 1, and the coal falling pipe body 1 vibrates, thereby reducing the probability of blockage; If the coal drop pipe body 1 is blocked, the staff can first find out the cause of the blockage. After the blockage is found, the length of the coal passing rod 86 can be adjusted according to the blockage. The threaded sleeve 85 can be rotated during adjustment. The threaded sleeve 85 is threadedly connected with the adjusting screw 82, and the adjusting screw 82 is slidably connected with the fixed sleeve 81 through the guide groove 83 and the guide block 84. Therefore, when the threaded sleeve 85 rotates, the adjusting screw 82 and the coal passing rod 86 can be driven to slide along the fixed sleeve 81, so as to adjust the overall length of the fixed sleeve 81 and the coal passing rod 86. After the adjustment is completed, the servo motor 3 can be turned on and reversed. When the servo motor 3 rotates forward, it rotates with the driven The one-way bearing 77 connected to the wheel 58 is in a locked state, and the one-way bearing 77 connected to the reciprocating screw 72 is in a free state. Therefore, the servo motor 3 can drive the driven wheel 58 to rotate but cannot drive the reciprocating screw 72. When the servo motor 3 reverses, with the cooperation of the two one-way bearings 77, the driven wheel 58 cannot rotate but the reciprocating screw 72 can be driven. When the reciprocating screw 72 rotates, the slide plate 74 is slidably connected to the guide rod 73 and is screwed to the reciprocating screw 72 through the connecting plate 75. Therefore, the slide plate 74 can be driven to slide back and forth along the guide rod 73, so that the coal-clearing rod 86 can slide back and forth along the clearance opening 9 to clear the coal in the coal-dropping pipe body 1.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal conveying and dropping pipe device, characterized in that: include: Coal drop pipe body (1); A mounting sleeve (2) fixedly mounted on the outer wall of the coal dropping pipe body (1); A servo motor (3) is fixedly mounted on the inner wall of the mounting sleeve (2); Two flywheels (4) are respectively fixedly mounted on two output ends of the servo motor (3); Two sets of knocking structures are arranged on the coal dropping pipe body (1) and are used to knock the coal dropping pipe body (1); A coal venting structure, arranged on the side wall of the coal dropping pipe body (1) and used for dredging the coal dropping pipe body (1); Three groups of regulating structures are distributed in a linear array on the coal passing structure.

2. A coal conveying and dropping pipe device according to claim 1, characterized in that: The knocking structure comprises: A fixing frame (51) fixedly mounted on a side wall of the coal dropping pipe body (1); A transmission shaft (52) rotatably mounted between opposite side surfaces of the fixing frame (51); Two knocking rods (53) are symmetrically fixedly mounted on the outer wall of the transmission shaft (52); A shift plate (54) fixedly mounted on an outer wall of the transmission shaft (52); A drive shaft (55) is rotatably mounted between opposite side surfaces of the fixing frame (51), and one end of the drive shaft (55) passes through the fixing frame (51); Two drive plates (56) are symmetrically fixedly mounted on the outer wall of the drive shaft (55), and the drive plates (56) are adapted to fit the shifting plates (54); Two torsion springs (57) are respectively sleeved on the two ends of the transmission shaft (52), and the two ends of the torsion springs (57) are respectively fixedly connected to the transmission shaft (52) and the fixing frame (51).

3. A coal conveying and dropping pipe device according to claim 2, characterized in that: A striking head (6) is fixedly mounted on one end of the striking rod (53) away from the transmission shaft (52), and an outer wall of the striking head (6) is covered with a rubber pad.

4. A coal conveying and dropping pipe device according to claim 2, characterized in that: The connection between the knocking rod (53), the shifting plate (54) and the transmission shaft (52) is arranged vertically.

5. The coal conveying and dropping pipe device according to claim 2, characterized in that: The coal-passing structure comprises: A bracket (71) is fixedly mounted on the side of the coal dropping pipe body (1) and located at the side of the mounting sleeve (2); A reciprocating screw (72) rotatably mounted on the inner wall of the bracket (71); Four guide rods (73) fixedly mounted on the side of the coal dropping pipe body (1); A slide plate (74) slidably mounted on the four guide rods (73); A connecting plate (75) is fixedly mounted on a side of the slide plate (74), and an end of the reciprocating screw (72) passes through the connecting plate (75) and is screwed to the connecting plate (75); Two one-way bearings (77) are respectively fixedly mounted on the sides of the two flywheels (4), and the end of the reciprocating screw (72) is fixedly connected to the inner wall of one of the one-way bearings (77).

6. A coal conveying and dropping pipe device according to claim 5, characterized in that: A limiting plate (76) is fixedly mounted on one end of the guide rod (73) away from the coal dropping pipe body (1).

7. The coal conveying and dropping pipe device according to claim 5, characterized in that: A driven wheel (58) is fixedly mounted on one end of the two transmission shafts (52) located outside the fixing frame (51) and on the inner wall of another one-way bearing (77), and a synchronous belt is sleeved on the three driven wheels (58).

8. The coal conveying and dropping pipe device according to claim 5, characterized in that: The regulatory structure comprises: A fixed sleeve (81) fixedly mounted on the side of the slide plate (74) opposite to the coal drop pipe body (1); An adjusting screw (82) is arranged inside the fixing sleeve (81); Two guide grooves (83) are symmetrically arranged on the inner wall of the fixing sleeve (81); Two guide blocks (84) are symmetrically fixedly mounted on one end of the adjusting screw (82) located inside the fixed sleeve (81), and the guide blocks (84) are slidably connected to the guide groove (83); a threaded sleeve (85) rotatably mounted on an end of the fixed sleeve (81) away from the slide plate (74), and the threaded sleeve (85) is threadedly connected to the adjusting screw (82); A coal passage rod (86) is fixedly mounted on one end of the adjusting screw rod (82) located outside the fixing sleeve (81).

9. A coal conveying and dropping pipe device according to claim 8, characterized in that: A clearance opening (9) adapted to the coal passage rod (86) is provided on the side surface of the coal drop pipe body (1), and a sealing rubber ring is provided on the inner wall of the clearance opening (9).

10. The coal conveying and dropping pipe device according to claim 5, characterized in that: The width of the slide plate (74) is the same as the width of the coal drop pipe body (1).

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