Coal sub-packaging machine with dust reduction function

Abstract

The present application relates to the technical fields of subpackaging, and particularly relates to a coal subpackaging machine with dust reduction function. Technical problem: During the transportation of coal blocks, the mutual friction between the coal blocks will generate debris and dust, and the coal dust will pollute the air and affect the health of the workers. Technical scheme: The coal subpackaging machine with dust reduction function comprises a mounting frame, a hopper screen, a discharge electrode and a dust collecting electrode, etc.; the mounting frame is fixedly connected with a hopper on the upper side; the hopper is provided with a fourth through hole; the fourth through hole is fixedly connected with a screen; the hopper is fixedly connected with a plurality of discharge electrodes on the upper side; and the inner bottom side of the hopper is fixedly connected with a plurality of dust collecting electrodes. First, the large coal blocks, small coal blocks and coal fines are separated, then the discharge electrodes and the dust collecting electrodes are cooperated to adsorb the coal fines on the dust collecting electrodes, then the small coal blocks are used to scrape the coal fines adsorbed on the dust collecting electrodes to the screen, and then the dust reduction effect is realized by the way of extracting the coal fines by the air extractor.

Description

Technical Field

[0001] This invention relates to the field of coal packaging technology, and in particular to a coal packaging machine with dust reduction function. Background Technology

[0002] In the existing coal lump packaging process, it is necessary to manually put the packaging bag on the discharge port of the packaging machine. When the coal lump falls from the packaging machine into the packaging bag, the impact force of the coal lump during the fall is large, which can easily cause the coal lump to break the packaging bag or cause the packaging bag to fall off from the discharge port of the packaging machine. This requires manual picking up of the coal lump and putting it back into the packaging bag, which consumes a lot of manpower and financial resources.

[0003] As coal blocks are lifted by the conveyor belt to the inlet of the packaging machine, the friction between the coal blocks generates debris and dust. A large amount of debris in the coal blocks will affect product quality. At the same time, coal dust will pollute the air, affect the health of workers, and coal dust falling into electronic equipment will cause equipment failure, resulting in economic losses. Summary of the Invention

[0004] To overcome the drawbacks of coal dust pollution caused by friction between coal blocks during transportation, which pollutes the air and affects the health of workers, this invention provides a coal sorting machine with dust reduction function.

[0005] The technical solution of this invention is as follows: A coal sorting machine with dust reduction function, comprising a mounting frame, a funnel, a discharge hopper, a connecting frame, a guide rod, and a storage pipe; a funnel is fixedly connected to the upper side of the mounting frame; a first through hole is opened on the upper rear side of the funnel; a second through hole and a third through hole are opened on the lower front side of the funnel; the second through hole is located in front of the third through hole; a discharge hopper is fixedly connected to the lower side of the funnel, and the discharge hopper communicates with the third through hole; a connecting frame is fixedly connected to the inner side of the funnel; the connecting frame and the funnel together are fixedly connected to a plurality of hoppers for separating large pieces of coal. The hopper includes a guide rod for charcoal, small pieces of coal, and coal dust; a storage pipe is fixedly connected to the lower side of the hopper, and the storage pipe is connected to a third through hole; it also includes a screen, discharge electrodes, dust collecting electrodes, and a dust collection assembly; the hopper has a fourth through hole, with the third through hole located in front of the fourth through hole; a screen is fixedly connected inside the fourth through hole; several discharge electrodes are fixedly connected to the upper side of the hopper; several dust collecting electrodes for adsorbing coal dust are fixedly connected to the bottom side of the hopper; a mounting frame is connected to a dust collection assembly for adsorbing coal dust, and the dust collection assembly is connected to the hopper.

[0006] More preferably, the dust collection assembly includes a connecting pipe, a dust filter chamber, a chamber door, a negative pressure pipe, and an exhaust fan; the connecting pipe is fixedly connected to the lower side of the funnel and communicates with the fourth through hole; the exhaust fan is fixedly connected to the mounting bracket; the exhaust fan is connected to the negative pressure pipe; the negative pressure pipe is connected to the dust filter chamber, and the dust filter chamber is fixedly connected to and communicates with the connecting pipe; the dust filter chamber is movably connected to the chamber door; and a filter screen for collecting coal dust is detachably connected to the lower side of the connecting pipe.

[0007] More preferably, it also includes a cover; the funnel is detachably connected to the cover.

[0008] More preferably, it also includes baffles, with two baffles fixedly attached to the lower side of the funnel, distributed on the left and right. The baffles are located to the right of the fourth through hole, and the two baffles are in a figure-eight shape to guide small pieces of coal and coal dust.

[0009] More preferably, it also includes a loading assembly; the loading assembly includes a sealing plate, a connecting seat, a push rod, a second protective cover, a sliding block, a stop block, a motor, a first bevel gear, a second bevel gear, and a power unit; the power unit is connected inside the storage pipe; the power unit is connected to two sealing plates for supporting large pieces of coal, the two sealing plates being symmetrically distributed left and right; the power unit is used to drive the sealing plates to move; a connecting seat is fixedly connected to the left and right sides of the funnel; the two connecting seats are movably connected to the push rod; the telescopic part of each push rod is movably connected to a second protective cover for opening the packaging bag; the storage pipe is slidably connected to two sliding blocks distributed front and back, and the sliding blocks are rotatably connected to the second protective cover; a second bevel gear is fixedly connected to the front and rear sides of each second protective cover; a stop block is fixedly connected to each sliding block; a motor is fixedly connected to the upper part of each stop block; the output shaft of each motor passes through the corresponding stop block and is fixedly connected to a first bevel gear, and the first bevel gear meshes with the corresponding second bevel gear.

[0010] More preferably, a support portion for supporting the sealing plate is provided on the lower side of the storage tube.

[0011] More preferably, the second protective cover is set in an arc-shaped triangle, and when the two are attached to each other, they form a cone-like shape, which is used to guide the packaging bag.

[0012] More preferably, it also includes a first protective cover; two first protective covers are fixedly connected to the lower side of the storage tube, distributed front and back.

[0013] More preferably, it also includes an unloading assembly; the unloading assembly includes a second guide rail, a second moving block and a hopper; the mounting frame is fixedly connected to two second guide rails distributed on the left and right; each second guide rail is rotatably connected to a hopper.

[0014] More preferably, it also includes a rotating shaft and an L-shaped slide plate; the mounting frame is fixedly connected to two L-shaped slide plates distributed on the left and right, the L-shaped slide plates are located behind the second guide rail, and a rotating shaft is fixedly connected to the lower rear side of the bucket, and the rotating shaft is slidably connected to the L-shaped slide plate.

[0015] The present invention has the following advantages: In the technical solution provided by the present invention: First, large pieces of coal and small pieces of coal and coal dust are separated. Then, the coal dust is adsorbed onto the dust collecting electrode by the cooperation of the discharge electrode and the dust collecting electrode. Then, the kinetic energy generated during the movement of the small pieces of coal is used to scrape the coal dust adsorbed on the dust collecting electrode onto the screen. Then, the dust in the coal dust is extracted by the exhaust fan to achieve the dust reduction effect.

[0016] The second protective cover isolates the sides of the bag from large pieces of coal, preventing large pieces of coal from hitting the sides of the bag and thus avoiding them from breaking the sides of the bag.

[0017] By continuously supporting the packaging bag with a bucket, the potential energy generated when large pieces of coal fall into the packaging bag is prevented from impacting the bottom of the bag, pushing it downwards on the two second protective covers, and then causing it to detach from the second protective covers and fall to the ground. This also prevents the packaging bag from falling directly to the ground because the two second protective covers cannot support the bag when there are too many large pieces of coal inside. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first structure of the coal sorting machine with dust reduction function disclosed in this invention;

[0019] Figure 2 This is a schematic diagram of the second structure of the coal sorting machine with dust reduction function disclosed in this invention;

[0020] Figure 3 This is a schematic diagram of the first partial structure of the coal sorting machine with dust reduction function disclosed in this invention.

[0021] Figure 4 This is a partial structural cross-sectional view of the coal sorting machine with dust reduction function of the present invention.

[0022] Figure 5 This is a partial structural schematic diagram of the coal sorting machine with dust reduction function of the present invention.

[0023] Figure 6 This is a schematic diagram of the dust collection component disclosed in the coal sorting machine with dust reduction function of the present invention;

[0024] Figure 7 This is a schematic diagram of the second partial structure of the coal sorting machine with dust reduction function disclosed in this invention;

[0025] Figure 8 This is a schematic diagram of the structure of the coal sorting machine with dust reduction function of the present invention, including the storage pipe, the first guide rail, the first moving block, the first protective cover and the sealing plate.

[0026] Figure 9 The diagrams show the working state of the sealing plate of the coal packaging machine with dust reduction function of the present invention. The leftmost diagram shows the state in which the sealing plate is in contact with the support part, and the rightmost diagram shows the state in which the sealing plate is not in contact with the support part.

[0027] Figure 10 This is a schematic diagram of the push rod, second protective cover, and motor of the coal sorting machine with dust reduction function disclosed in this invention.

[0028] Figure 11 This is a schematic diagram of the structure of the second protective cover, sliding block, stop block, motor, first bevel gear and second bevel gear disclosed in the dust-reducing coal loading machine of the present invention.

[0029] Figure 12 This is a schematic diagram of the unloading assembly of the coal sorting machine with dust reduction function disclosed in this invention.

[0030] Figure 13 The diagram shows the loading and unloading process of the coal loading machine with dust reduction function of the present invention. The left side is the initial state diagram of the device, the middle side is the state diagram at the start of the loading operation, and the right side is the state diagram after the loading is completed.

[0031] Reference numerals: 1-Mounting frame, 2-Function funnel, 101-Discharge hopper, 103-Connecting frame, 104-Guide rod, 201-Storage pipe, 106-Screen, 112-Discharge electrode, 113-Dust collecting electrode, 114-Connecting pipe, 115-Dust filter bin, 116-Binary door, 117-Negative pressure pipe, 118-Exhaust fan, 111-Cover, 105-Baffle, 207-Sealing plate, 211-Connecting seat, 212-Push rod, 213-Second protective cover, 21 4-Sliding block, 215-Stop block, 216-Motor, 217-First bevel gear, 218-Second bevel gear, 202-First guide rail, 203-First moving block, 204-Connecting rod, 206-First protective cover, 301-Second guide rail, 302-Second moving block, 310-Support bucket, 303-Rotating shaft, 304-L-shaped slide plate, 2a-First through hole, 2b-Second through hole, 2c-Third through hole, 2d-Fourth through hole, 201a-Supporting part. Detailed Implementation

[0032] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0033] Example 1

[0034] A coal sorting machine with dust reduction function, such as Figures 1-6As shown, the device includes a mounting frame 1, a funnel 2, a discharge hopper 101, a connecting frame 103, guide rods 104, and a storage pipe 201. The funnel 2 is welded to the upper side of the mounting frame 1. A first through hole 2a for material inlet is opened on the upper rear side of the funnel 2. A second through hole 2b and a third through hole 2c are opened on the lower front side of the funnel 2. The second through hole 2b is located in front of the third through hole 2c. A discharge hopper 101 for transferring small pieces of coal is fixedly connected to the lower side of the funnel 2, and the discharge hopper 101 communicates with the third through hole 2c. A connecting frame 103 is fixedly connected to the inner side of the funnel 2. Several guide rods 104 are fixedly connected to the connecting frame 103 and the funnel 2. A series of guide rods 104 are fixedly connected to the lower side of the funnel 2. The hopper 2 is equipped with a storage pipe 201 for transferring large pieces of coal, and the storage pipe 201 is connected to the third through hole 2c; it also includes a screen 106, a discharge electrode 112, a dust collection electrode 113, and a dust collection assembly; the funnel 2 has a fourth through hole 2d, and the third through hole 2c is located in front of the fourth through hole 2d; a screen 106 for preventing small pieces of coal from entering the discharge hopper 101 is fixedly connected in the fourth through hole 2d; several discharge electrodes 112 for releasing negative charges are fixedly connected to the upper side of the funnel 2; several dust collection electrodes 113 are bolted to the bottom side of the funnel 2; the mounting frame 1 is connected to the dust collection assembly, and the dust collection assembly is connected to the funnel 2.

[0035] The dust collection assembly includes a connecting pipe 114, a dust filter chamber 115, a chamber door 116, a negative pressure pipe 117, and an exhaust fan 118; the connecting pipe 114 for transferring coal dust is fixedly connected to the lower side of the funnel 2, and the connecting pipe 114 is connected to the fourth through hole 2d; the mounting bracket 1 is bolted to the exhaust fan 118 for collecting coal dust; the exhaust fan 118 is connected to the negative pressure pipe 117; the negative pressure pipe 117 is connected to the dust filter chamber 115, and the dust filter chamber 115 is fixedly connected to and connected to the connecting pipe 114; the dust filter chamber 115 is hinged to the chamber door 116; a filter screen is detachably connected to the lower side of the connecting pipe 114.

[0036] It also includes a cover 111; the funnel 2 is detachably connected to the cover 111 for blocking coal dust.

[0037] It also includes baffles 105. Two baffles 105 are fixedly connected to the lower side of the funnel 2, and the baffles 105 are located to the right of the fourth through hole 2d. The two baffles 105 are in the shape of the number eight.

[0038] The specific operation of the above embodiment 1 is as follows: First, manually open the chamber door 116, install the filter screen at the bottom of the connecting pipe 114, so that the filter screen covers the bottom of the connecting pipe 114, then close the chamber door 116 to keep the dust filter chamber 115 sealed, then connect the discharge electrode 112 to the negative terminal of the external electrostatic generator, and connect the dust collection electrode 113 to the positive terminal of the external electrostatic generator. This completes the preparatory work.

[0039] During coal sorting, firstly, the exhaust fan 118 is started. The exhaust fan 118 continuously extracts air from the funnel 2 through the negative pressure pipe 117, dust filter 115, connecting pipe 114, and fourth through hole 2d. Then, the coal enters the funnel 2 through the first through hole 2a. At this time, large pieces of coal are blocked by several guide rods 104 and move along the guide rods 104 to the top of the discharge hopper 101 under their own gravity. Small pieces of coal and coal dust fall into the bottom of the funnel 2 through the gaps between the guide rods 104. At this time, the small pieces of coal move along the funnel 2 through the gaps between the guide rods 104 under their own gravity. The inner bottom of hopper 2 moves downwards at an angle, and the coal dust absorbs the negative charge released by the discharge electrode 112 and is then adsorbed by the dust collecting electrode 113. As the small pieces of coal move, they continuously scrape off the coal dust adsorbed on the surface of the dust collecting electrode 113, thus causing the coal dust to move intermittently downwards. During this process, when the small pieces of coal and coal dust come into contact with the baffle 105, they are confined by the two baffles 105 and converge towards the center of hopper 2, eventually reaching the upper surface of the screen 106. During this process, the small pieces of coal pass through the space between the two baffles 105. The material continues to move downwards at an angle, then falls through the third through-hole 2c into the discharge hopper 101, and finally flows out of the discharge hopper 101. Larger coal fragments in the coal dust move along with the smaller pieces of coal and also flow out of the discharge hopper 101. Smaller dust particles in the coal dust, drawn by the exhaust fan 118, sequentially pass through the screen 106, the fourth through-hole 2d, and the connecting pipe 114 to reach the dust filter 115. During this process, when the dust particles in the coal dust pass through the filter screen installed on the connecting pipe 114, the dust particles are intercepted and collected on the filter screen, thus... Large pieces of coal are separated from small pieces of coal and coal dust. Then, the discharge electrode 112 and the dust collection electrode 113 work together to adsorb the coal dust onto the dust collection electrode 113. Then, the kinetic energy generated by the movement of the small pieces of coal is used to scrape the coal dust adsorbed on the dust collection electrode 113 onto the screen 106. Finally, the dust in the coal dust is extracted by the exhaust fan 118 to achieve the dust reduction effect. The entire packaging process will not generate a lot of dust, thus avoiding the dust in the coal dust from being raised during packaging, which would cause a lot of dust in the work area and affect the health of the workers.

[0040] Example 2

[0041] Based on Example 1, such as Figures 1-2 , Figures 7-11 and Figure 13As shown, it also includes a loading assembly; the loading assembly includes a sealing plate 207, a connecting seat 211, a push rod 212, a second protective cover 213, a sliding block 214, a stop block 215, a motor 216, a first bevel gear 217, a second bevel gear 218, and a power unit; the power unit is connected inside the storage pipe 201; the power unit is connected to two sealing plates 207, which are symmetrically distributed on the left and right sides; the power unit is used to drive the sealing plates 207 to move; a connecting seat 211 is fixedly connected to the left and right sides of the funnel 2; the two connecting seats 211 are hinged together to the push rod 212; each push rod Each telescopic part of 212 is hinged to a second protective cover 213; the storage tube 201 is slidably connected to two sliding blocks 214 distributed front and rear, and the sliding blocks 214 are rotatably connected to the second protective cover 213; each second protective cover 213 is fixedly connected to a second bevel gear 218 on its front and rear sides; each sliding block 214 is fixedly connected to a stop block 215; each stop block 215 is bolted to a motor 216; the output shaft of each motor 216 passes through the corresponding stop block 215 and is fixedly connected to a first bevel gear 217, and the first bevel gear 217 meshes with the corresponding second bevel gear 218.

[0042] The lower side of the storage tube 201 is provided with a support part 201a for supporting the sealing plate 207.

[0043] The second protective cover 213 is set in an arc-shaped triangle. When the two are attached to each other, they form a cone-like shape, which is used to guide the packaging bag, so that it is convenient for the packaging bag to be manually put onto the outer surface of the two second protective covers 213.

[0044] The power unit includes a first guide rail 202, a first moving block 203 and a connecting rod 204; two first guide rails 202 distributed front and rear are bolted to the lower side of the storage tube 201; each first guide rail 202 is slidably connected to a first moving block 203; each first moving block 203 is fixedly connected to a connecting rod 204, and the connecting rod 204 is rotatably connected to the corresponding sealing plate 207.

[0045] It also includes a first protective cover 206; two first protective covers 206 are bolted to the lower side of the storage pipe 201 and distributed in front and behind; the first protective cover 206 is located directly above the corresponding first guide rail 202 and is used to protect the corresponding first guide rail 202 and the first moving block 203, and prevent the first guide rail 202 and the first moving block 203 from being damaged by large pieces of coal.

[0046] The specific operation of the above embodiment 2 is as follows: It should be noted that before the coal is packaged, the packaging bags need to be placed over the outer surfaces of the two second protective covers 213. During this process, if... Figure 13As shown in the left-hand diagram, since the second protective cover 213 is designed with an arc-shaped triangle, the two covers fit together to form a cone-like shape, making it convenient for manual placement of the packaging bag onto the outer surface of the two second protective covers 213. Then, the two motors 216 drive the second bevel gear 218 to rotate through the corresponding first bevel gear 217, causing the two second protective covers 213 to move away from each other, thereby supporting the packaging bag. At this time, the two second protective covers 213 present an appearance as follows: Figure 10 In the state shown, control the telescopic parts of the two push rods 212 to retract, driving the second protective cover 213 and its connection to move upward, so that the packaging bag covers the storage tube 201;

[0047] During coal sorting, when the second batch of coal enters hopper 2, the large pieces of coal above discharge hopper 101 are pushed into storage pipe 201 by the newly entering large pieces of coal, and then supported by two sealing plates 207. Figure 9 As shown in the left-hand diagram, this reduces the distance large pieces of coal need to fall into the packaging bag, preventing excessive potential energy from the large pieces falling directly into the bag and breaking the bottom. The coal is then temporarily stored in the storage pipe 201. When a certain amount of large pieces of coal is stored in the pipe 201, the two first moving blocks 203 are controlled to move the corresponding connecting rods 204 and sealing plate 207 upwards. During this process, the sealing plate 207 gradually moves away from the support part 201a, gradually losing the support force of the support part 201a, and then the sealing plate 207 gradually rotates. When the sealing plate 207 rotates to... Figure 9 In the vertically downward position shown in the middle right 1, the sealing plate 207 no longer supports large pieces of coal, and large pieces of coal will continuously fall from the storage pipe 201 into the packaging bag. At the same time, the telescopic parts of the two push rods 212 extend, pushing the sealing plate 207, the packaging bag and its connected parts downward, so that large pieces of coal continuously fall from the storage pipe 201 into the packaging bag. During this process, as the sealing plate 207 moves upward, it pushes the large pieces of coal above it, thereby preventing the large pieces of coal in the storage pipe 201 from getting stuck together and causing blockages that prevent them from falling into the packaging bag. The large pieces of coal falling into the packaging bag are blocked by the second protective cover 213 and cannot collide with the side of the packaging bag, thereby preventing the large pieces of coal from breaking the side of the packaging bag.

[0048] Example 3

[0049] Based on Example 2, such as Figures 1-2 and Figures 12-13 As shown, it also includes an unloading assembly; the unloading assembly includes a second guide rail 301, a second moving block 302 and a tray 310; the mounting bracket 1 is bolted to two second guide rails 301 distributed on the left and right; each second guide rail 301 is rotatably connected to a tray 310 for holding the packaging bag.

[0050] It also includes a rotating shaft 303 and an L-shaped slide plate 304; the mounting bracket 1 is bolted to two L-shaped slide plates 304 distributed on the left and right, the L-shaped slide plates 304 are located behind the second guide rail 301, and a rotating shaft 303 for rotating the bucket 310 is fixedly connected to the lower rear side of the bucket 310, and the rotating shaft 303 is slidably connected to the L-shaped slide plate 304.

[0051] The specific operation of the above embodiment 3 is as follows: It should be noted that when the packaging bag moves upward, the two second moving blocks 302 drive the corresponding rotating shafts 303 and the tray 310 to move upward. During this process, under the action of the corresponding L-shaped slide plates 304, the two rotating shafts 303 will push the tray 310 to rotate ninety degrees. At this time, the tray 310 presents the following position: Figure 13 As shown in the left-middle position 1, the tray 310 holds the packaging bag, and then the second moving block 302 continues to drive the tray 310 to move upward;

[0052] During the process of pusher 212 pushing the packaging bag downwards, such as Figure 13 As shown in the middle right 1, the second moving block 302 is controlled to drive the bucket 310 downward, so that the bucket 310 keeps supporting the packaging bag downward. This prevents the potential energy generated when large pieces of coal fall into the packaging bag from impacting the bottom of the packaging bag, pushing the packaging bag downward on the two second protective covers 213, and then detaching from the second protective covers 213 and falling to the ground. This would require manual picking up of the large pieces of coal and putting them back into the packaging bag, which would consume a lot of manpower and financial resources. In addition, if there are too many large pieces of coal in the packaging bag, the two second protective covers 213 will not be able to support the packaging bag, causing the packaging bag to fall directly to the ground.

[0053] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A coal sorting machine with dust suppression function, comprising a mounting frame (1), a funnel (2), a discharge hopper (101), a connecting frame (103), a guide rod (104), and a storage pipe (201); the funnel (2) is fixedly connected to the upper side of the mounting frame (1); a first through hole (2a) is opened on the upper rear side of the funnel (2); a second through hole (2b) and a third through hole (2c) are opened on the lower front side of the funnel (2); the second through hole (2b) is located in front of the third through hole (2c); A discharge hopper (101) is fixedly connected to the lower side of the hopper (2), and the discharge hopper (101) is connected to the third through hole (2c); a connecting frame (103) is fixedly connected to the inner side of the funnel (2); the connecting frame (103) and the funnel (2) are jointly fixedly connected to a number of guide rods (104) for separating large pieces of coal, small pieces of coal and coal dust; a storage pipe (201) is fixedly connected to the lower side of the funnel (2), and the storage pipe (201) is connected to the third through hole (2c); characterized in that, It also includes a screen (106), a discharge electrode (112), a dust collection electrode (113), and a dust collection assembly; the funnel (2) has a fourth through hole (2d), and a third through hole (2c) is located in front of the fourth through hole (2d); the screen (106) is fixedly connected inside the fourth through hole (2d); several discharge electrodes (112) are fixedly connected to the upper side of the funnel (2); several dust collection electrodes (113) for adsorbing coal dust are fixedly connected to the bottom side of the funnel (2); the mounting frame (1) is connected to a dust collection assembly for adsorbing coal dust, and the dust collection assembly is connected to the funnel (2); It also includes a loading assembly; the loading assembly includes a sealing plate (207), a connecting seat (211), a push rod (212), a second protective cover (213), a sliding block (214), a stop block (215), a motor (216), a first bevel gear (217), a second bevel gear (218), and a power unit; the power unit is connected inside the storage pipe (201); the power unit is connected to two sealing plates (207) for supporting large pieces of coal, and the two sealing plates (207) are symmetrically distributed on the left and right sides; the power unit is used to drive the sealing plates (207) to move; a connecting seat (211) is fixedly connected to the left and right sides of the funnel (2); the two connecting seats (211) are movably connected to the push rod (212); each push rod The telescopic part of (212) is movably connected to a second protective cover (213) for opening the packaging bag; the storage tube (201) is slidably connected to two sliding blocks (214) distributed in front and behind, and the sliding blocks (214) are rotatably connected to the second protective cover (213); a second bevel gear (218) is fixedly connected to the front and rear sides of each second protective cover (213); a stop block (215) is fixedly connected to each sliding block (214); a motor (216) is fixedly connected to the upper part of each stop block (215); the output shaft of each motor (216) passes through the corresponding stop block (215) and is fixedly connected to a first bevel gear (217), and the first bevel gear (217) meshes with the corresponding second bevel gear (218); It also includes a discharge assembly; the discharge assembly includes a second guide rail (301), a second moving block (302) and a hopper (310); the mounting frame (1) is fixedly connected to two second guide rails (301) distributed on the left and right; each second guide rail (301) is rotatably connected to a hopper (310).

2. A coal sorting machine with dust reduction function according to claim 1, characterized in that, The dust collection assembly includes a connecting pipe (114), a dust filter chamber (115), a chamber door (116), a negative pressure pipe (117), and an exhaust fan (118); the connecting pipe (114) is fixedly connected to the lower side of the funnel (2), and the connecting pipe (114) is connected to the fourth through hole (2d); the exhaust fan (118) is fixedly connected to the mounting bracket (1); the exhaust fan (118) is connected to the negative pressure pipe (117); the negative pressure pipe (117) is connected to the dust filter chamber (115), and the dust filter chamber (115) is fixedly connected to and connected to the connecting pipe (114); the dust filter chamber (115) is movably connected to the chamber door (116); a filter screen for collecting coal dust is detachably connected to the lower side of the connecting pipe (114).

3. A coal sorting machine with dust reduction function according to claim 1, characterized in that, It also includes a cover (111); the funnel (2) is detachably connected to the cover (111).

4. A coal sorting machine with dust reduction function according to claim 1, characterized in that, It also includes baffles (105). Two baffles (105) are fixedly attached to the lower side of the funnel (2) and distributed on the left and right. The baffles (105) are located to the right of the fourth through hole (2d). The two baffles (105) are in the shape of the number eight and are used to guide small pieces of coal and coal dust.

5. A coal sorting machine with dust reduction function according to claim 1, characterized in that, The lower side of the storage tube (201) is provided with a support part (201a) for supporting the sealing plate (207).

6. A coal sorting machine with dust reduction function according to claim 1, characterized in that, The second protective cover (213) is set in an arc triangle. When the two are attached to each other, they form a cone-like shape, which is used to guide the packaging bag.

7. A coal sorting machine with dust reduction function according to any one of claims 5-6, characterized in that, It also includes a first protective cover (206); two first protective covers (206) are fixedly connected to the lower side of the storage tube (201) in a front-to-back distribution.

8. A coal sorting machine with dust reduction function according to claim 1, characterized in that, It also includes a rotating shaft (303) and an L-shaped slide plate (304); the mounting bracket (1) is fixedly connected to two L-shaped slide plates (304) distributed on the left and right, the L-shaped slide plates (304) are located behind the second guide rail (301), the rotating shaft (303) is fixedly connected to the lower rear side of the bucket (310), and the rotating shaft (303) is slidably connected to the L-shaped slide plate (304).

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