Coal drying device

Abstract

The present disclosure relates to a coal drying device, which includes a cylinder for loading coal and a first driving mechanism for driving the cylinder to rotate. One end of the cylinder is connected with a heating mechanism, and the other end is connected with a feed hopper through a feed pipe. The feed hopper is connected with a dust isolation mechanism. The dust isolation mechanism includes a sliding plate, a shielding plate and a sliding member which are arranged in the feed hopper from top to bottom in sequence. Among them, the sliding plate is configured as a cone, and its cross-section gradually shrinks from top to bottom. The sliding plate has an upper opening and a lower opening. The side wall of the upper opening is fixedly connected to the top end of the inner wall of the feed hopper. The middle part of the shielding plate extends into the lower opening and has a gap with the lower opening. A material dropping port which radially inwardly recesses is formed on the side wall of the shielding plate. A spiral downward material space is formed between the sliding member and the feed hopper. The material dropping port is arranged corresponding to the downward material space. The side walls of the shielding plate and the sliding member respectively abut against the inner wall of the feed hopper. In this way, the dust escaping outward can be greatly reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of coal processing, and more particularly, to a coal drying device. Background Art

[0002] Coal has been one of the main energy sources used by the human world since the 18th century. It is mainly a solid combustible mineral formed by the burial of ancient plants underground through complex biochemical and physicochemical changes. The world's coal reserves are extremely large and it is one of the irreplaceable energy sources in human life and production. After being mined, coal needs to be dried before it can be used.

[0003] For example, the Chinese patent with the publication number CN214792433U discloses a drying device for coal processing. When the coal is fed into the drying device through the feed hopper, dust will be raised when the coal contacts the feed hopper and the discharge pipe, and the dust will escape from the feed hopper, which will not only contaminate the surrounding environment but also cause harm to the health of the operators. In addition, while the spiral propulsion plate pushes the coal forward, it also makes the coal roll over. However, during the pushing process, there is partial stacking of the coal during the rolling process, and at the same time, the coal is removed from the rotating drying roller through the spiral propulsion plate, resulting in insufficient drying of the coal and the need for rework of the coal, which not only increases the labor cost but also affects the work progress. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a coal drying device to at least partially solve the problems existing in the related art.

[0005] To achieve the above object, the present disclosure provides a coal drying device, which includes a cylinder for loading coal and a first driving mechanism for driving the cylinder to rotate. One end of the cylinder is connected with a heating mechanism, and the other end is connected with a feed hopper through a feed pipe. The feed hopper is connected with a dust isolation mechanism, and the dust isolation mechanism includes a sliding material plate, a shielding plate and a sliding material member which are arranged in the feed hopper from top to bottom in sequence.

[0006] Wherein, the sliding material plate is constructed as a cone, and its cross-section gradually shrinks from top to bottom. The sliding material plate has an upper opening and a lower opening. The side wall of the upper opening is fixedly connected to the top end of the inner wall of the feed hopper. The middle part of the shielding plate extends into the lower opening and has a gap with the lower opening. The side wall of the shielding plate is formed with a material falling port that radially inwardly recesses. A spiral downward material falling space is formed between the sliding material member and the feed hopper. The material falling port is arranged corresponding to the material falling space. The side walls of the shielding plate and the sliding material member respectively abut against the inner wall of the feed hopper.

[0007] Optionally, the shielding disc includes a first shielding member partially extending into the lower opening and a second shielding member surrounding the outer periphery of the first shielding member. The first shielding member is configured to be conical, and its cross-section gradually increases from top to bottom. The shielding disc is arranged obliquely downward, and the blanking port is formed on the lower side wall of the second shielding member.

[0008] Optionally, the second shielding member and the material sliding disc are fixedly connected by fixing rods.

[0009] Optionally, the material sliding member includes a material sliding plate arranged spirally downward and a baffle perpendicularly connected to the inner wall of the material sliding plate. The upper end of the material sliding plate is fixedly connected to the bottom wall of the shielding disc near the blanking port, and the outer wall of the material sliding plate abuts against the inner wall of the feed hopper.

[0010] Optionally, it further includes a corrugated pipe connected to the top end of the material sliding disc.

[0011] Optionally, the first driving mechanism includes a first motor, a first gear connected to the driving shaft of the first motor, and a second gear sleeved on the cylinder body, and the first gear meshes with the second gear.

[0012] Optionally, the heating mechanism includes a dryer connected to one end of the cylinder body through a heat preservation pipe. A stirring assembly extending into the cylinder body is rotatably connected to the end of the heat preservation pipe near the cylinder body. The coal drying device further includes a second driving mechanism for driving the stirring assembly to rotate.

[0013] Optionally, the stirring assembly includes a stirring rod connected to the heat preservation pipe and a plurality of U-shaped pipes arranged at intervals along the radial direction on the outer periphery of the stirring rod. Among them, the stirring rod extends along the axial direction of the cylinder body, and the stirring rod and the U-shaped pipes respectively form cavities, and each cavity is respectively communicated with the heat preservation pipe. A plurality of uniformly distributed heat dissipation holes are respectively formed on the stirring rod and / or the U-shaped pipes.

[0014] Optionally, the U-shaped pipe has two oppositely arranged side pipe sections, and a straight pipe parallel to the stirring rod is connected between the two side pipe sections. A cavity communicated with the U-shaped pipe is formed on the straight pipe, and a plurality of uniformly distributed heat dissipation holes are formed on the straight pipe.

[0015] Optionally, it further includes a mounting seat having a mounting hole, and the cylinder body is rotatably mounted in the mounting hole.

[0016] Through the above technical solution, the first driving mechanism drives the cylinder to rotate, so that the coal is fully stirred. At the same time, the heat emitted by the heating mechanism will contact the coal, accelerating the uniform and sufficient drying of the coal, reducing the labor cost and improving the work efficiency. In addition, by setting up a dust isolation mechanism, when dust is raised, the shielding plate will block the dust for the first time, and the remaining dust will enter above the shielding plate through the material dropping port. The sliding plate will block most of the remaining dust, so that the dust will not escape outward, not only avoiding the contamination of the surrounding environment, but also avoiding the harm to the operator's body.

[0017] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0019] Figure 1 is a schematic structural view of a coal drying device provided by an exemplary embodiment of the present disclosure Figure 1 ;

[0020] Figure 2 is a schematic structural view of a coal drying device provided by an exemplary embodiment of the present disclosure Figure 2 ;

[0021] Figure 3 is a schematic structural view of a stirring assembly in a coal drying device provided by an exemplary embodiment of the present disclosure;

[0022] Figure 4 is a schematic structural view of a dust isolation mechanism in a coal drying device provided by an exemplary embodiment of the present disclosure;

[0023] Figure 5 is an assembly schematic view of a shielding plate and a sliding member in a coal drying device provided by an exemplary embodiment of the present disclosure.

[0024] Description of the Reference Numerals

[0025] 1 Cylinder 11 Feed Pipe

[0026] 12 Heat Preservation Pipe 2 Feed Hopper

[0027] 21 Annular Groove 31 Sliding Plate

[0028] 32 Shielding Plate 321 Material Dropping Port

[0029] 322 First Shielding Member 323 Second Shielding Member

[0030] 33 Slide part 331 Slide plate

[0031] 332 Baffle 34 Bellows

[0032] 4 Fixed rod 51 First motor

[0033] 52 First gear 53 Second gear

[0034] 6 Dryer 71 Stirring rod

[0035] 72 U-shaped pipe 73 Straight pipe

[0036] 74 Heat dissipation hole 8 Mounting seat

[0037] 81 Sealing disk 82 Connecting rod

[0038] 91 Second motor 92 First pulley

[0039] 93 Second pulley Detailed implementation mode

[0040] The following will describe in detail the specific implementation modes of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation modes described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0041] In the present disclosure, unless otherwise stated, the orientation terms "upper", "lower", "top", and "bottom" are defined based on the actual use directions of the relevant components. "Inner" and "outer" refer to the contour of the corresponding components themselves. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another, and do not have sequence and importance. In the present disclosure, when the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0042] Refer to Figures 1 to 5 , the present disclosure provides a coal drying device, which may include a cylinder 1 for loading coal and a first driving mechanism for driving the cylinder 1 to rotate. One end of the cylinder 1 is connected with a heating mechanism, and the other end is connected with a feed hopper 2 through a feed pipe 11. Here, the feed pipe 11 may be a bent pipe. The feed hopper 2 is connected with a dust isolation mechanism, such as Figure 4As shown, the dust isolation mechanism may include a sliding tray 31, a shielding tray 32, and a sliding member 33 that are arranged in the feed hopper 2 from top to bottom. Specifically, the sliding tray 31 is fixedly connected to the feed hopper 2, the shielding tray 32 is fixedly connected to the sliding tray 31, and the sliding member 33 is fixedly connected to the shielding tray 32. Among them, the sliding tray 31 may be configured as a cone, and its cross-section gradually decreases from top to bottom. The sliding tray 31 has an upper opening and a lower opening. The side wall of the upper opening is fixedly connected to the top end of the inner wall of the feed hopper 2. In the embodiment of the present disclosure, a radially outwardly recessed annular groove 21 is formed at the top end of the inner wall of the feed hopper 2, and the top end of the sliding tray 31 is clamped in the annular groove 21. The middle part of the shielding tray 32 extends into the lower opening, and there is a gap between the shielding tray 32 and the lower opening. A radially inwardly recessed material dropping port 321 is formed on the side wall of the shielding tray 32, so that the coal can slide along the shielding tray 32 from the gap to the material dropping port 321. A spiral downward material feeding space is formed between the sliding member 33 and the feed hopper 2, and the material dropping port 321 is arranged corresponding to the material feeding space. In this way, the coal falls from the material dropping port 321 into the material feeding space, and then enters the cylinder 1 from the feed hopper 2. Further, the side walls of the shielding tray 32 and the sliding member 33 can respectively abut against the inner wall of the feed hopper 2, which can prevent the coal from falling outside the shielding tray 32 and the sliding member 33. When feeding the coal, the coal is put in through the sliding tray 31. The entering coal will contact the shielding tray 32, and the shielding tray 32 can accelerate the flow of the coal. When the coal enters the downward material feeding space of the sliding member 33 through the material dropping port 321 and slides, the coal will further enter the cylinder 1 through the feed hopper 2.

[0043] Through the above technical solution, the first driving mechanism drives the rotation of the cylinder, so that the coal is fully stirred. At the same time, the heat emitted by the heating mechanism will contact the coal, accelerating the uniform and sufficient drying of the coal, reducing the labor cost, and improving the working efficiency. In addition, by setting the dust isolation mechanism, when dust is raised, the shielding tray will block the dust for the first time, and the remaining dust will enter above the shielding tray through the material dropping port. The sliding tray will block most of the remaining dust, so that the dust will not escape outward, not only avoiding the pollution of the surrounding environment, but also avoiding the harm to the body of the operator.

[0044] Among them, referring to Figure 5, the shielding plate 32 may include a first shielding member 322 partially extending into the lower opening and a second shielding member 323 surrounding the outer periphery of the first shielding member 322. The first shielding member 322 is configured to be conical and has a cross-section that gradually increases from top to bottom. The shielding plate 32 is inclined downward, and the blanking port 321 is formed on the lower side wall of the second shielding member 323, so that coal can first slide down along the side wall of the first shielding member 322 to the second shielding member 323, and then slide from the second shielding member 323 to the blanking port 321 to achieve rapid blanking. In addition, the outer wall of the second shielding member 323 abuts against the inner wall of the feed hopper 2 to prevent coal from falling from the outside of the second shielding member 323.

[0045] Further, referring to Figure 4 , the second shielding member 323 and the material sliding plate 31 may be fixedly connected by a fixing rod 4. In the embodiment of the present disclosure, the fixing rod 4 may be vertically connected between the outer wall of the material sliding plate 31 and the upper surface of the second shielding member 323.

[0046] Among them, referring to Figure 4 , Figure 5 , the material sliding member 33 may include a material sliding plate 331 arranged spirally downward and a baffle 332 vertically connected to the inner wall of the material sliding plate 331. The baffle 332 can block the upper side of the material sliding plate 331, and a blanking space is formed at the position on the material sliding plate 331 between the baffle 332 and the feed hopper 2. The upper end of the material sliding plate 331 is fixedly connected to the bottom wall of the shielding plate 32 near the blanking port 321, and the fixed connection method may be welding, clamping, bolt connection, etc., which is not limited herein. The outer wall of the material sliding plate 331 abuts against the inner wall of the feed hopper 2 to prevent coal from falling from the outside of the material sliding plate 331.

[0047] In some embodiments, referring to Figure 1 , Figure 2 , the coal drying device may further include a corrugated pipe 34 connected to the top end of the material sliding plate 31. The corrugated pipe 34 can be stretched and bent, which is more convenient for putting coal inward. If there is a small amount of remaining dust entering the material sliding plate 31, the corrugated pipe 34 will further block the dust and better block the dust.

[0048] Specifically, referring to Figure 2 , the first driving mechanism may include a first motor 51, a first gear 52 connected to the driving shaft of the first motor 51, and a second gear 53 sleeved on the cylinder 1. The first gear 52 meshes with the second gear 53. The first motor 51 drives the first gear 52 to rotate, and then drives the second gear 53 to rotate, so that the cylinder 1 can rotate around its own axis, and the coal is fully agitated to accelerate the drying of the coal. It should be noted that the first driving mechanism is not limited to the above structure, as long as it can drive the cylinder 1, it belongs to the protection scope of the present disclosure.

[0049] In addition, referring to Figure 1 , the heating mechanism may include a dryer 6 connected to one end of the cylinder body 1 through a heat preservation pipe 12. One end of the heat preservation pipe 12 close to the cylinder body 1 is rotatably connected with a stirring assembly extending into the cylinder body 1. The stirring assembly is rotatably connected to the end of the cylinder body 1. The coal drying device further includes a second driving mechanism for driving the stirring assembly to rotate. The second driving mechanism may include a second motor 91 fixedly connected to the outer side wall of the cylinder body 1. A first pulley 92 is fixedly connected to the driving end of the second motor 91. A second pulley 93 is sleeved on the stirring assembly. The first pulley 92 and the second pulley 93 are tightly connected by a belt. The second motor 91 drives the first pulley 92 to rotate, and then drives the second pulley 93 to rotate through the belt, so that the stirring assembly rotates to stir the coal.

[0050] As an exemplary embodiment of the present disclosure, referring to Figure 3 , the stirring assembly may include a stirring rod 71 connected to the heat preservation pipe 12 and a plurality of U-shaped pipes 72 arranged at intervals along the radial direction on the outer periphery of the stirring rod 71. Among them, the stirring rod 71 extends along the axial direction of the cylinder body 1. The stirring rod 71 and the U-shaped pipes 72 respectively form cavities, and each cavity is respectively communicated with the heat preservation pipe 12. A plurality of uniformly distributed heat dissipation holes 74 are respectively formed on the stirring rod 71 or the U-shaped pipes 72. Or, a plurality of uniformly distributed heat dissipation holes 74 are formed on both the stirring rod 71 and the U-shaped pipes 72. Through the arrangement of the heat dissipation holes 74, the heat can be evenly dissipated. The first driving mechanism drives the cylinder body 1 to rotate. At the same time, the second driving mechanism and the dryer 6 work. The dryer 6 conducts the heat into the stirring rod 71 and the U-shaped pipes 72 through the heat preservation pipe 12 and dissipates the heat outward through the heat dissipation holes 74. The second driving mechanism drives the stirring assembly to rotate. When the stirring assembly rotates in the opposite direction to the cylinder body 1, the coal will be fully stirred. At the same time, the dissipated heat will contact the coal, accelerating the full drying of the coal, avoiding rework, reducing the labor cost, and speeding up the work progress.

[0051] Furthermore, referring to Figure 3 , the U-shaped pipe 72 may have an intermediate pipe section and two side pipe sections respectively connected to both ends of the intermediate pipe section and arranged oppositely. A straight pipe 73 parallel to the stirring rod 71 is connected between the two side pipe sections. A cavity communicated with the U-shaped pipe 72 is formed on the straight pipe 73, and a plurality of uniformly distributed heat dissipation holes 74 are formed on the straight pipe 73, that is, the heat generated by the dryer 6 can also be dissipated into the cylinder body 1 through the heat dissipation holes 74 of the straight pipe 73.

[0052] Furthermore, referring to Figure 1 , Figure 2, the coal drying device may further include a mounting seat 8 having a mounting hole, and the cylinder body 1 may be rotatably mounted in the mounting hole through bearings. Additionally, a sealing disc 81 may be connected between the feed pipe 11 and the cylinder body 1. The sealing disc 81 may be rotatably connected to the mounting seat 8 through a connecting rod 82. The sealing disc 81 can be rotatably connected to the end of the feed pipe 11, and all the rotatable connections can be achieved through bearings. Additionally, the dryer 6 may be fixedly connected to the top of the mounting seat 8.

[0053] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0054] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0055] Furthermore, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A coal drying device, characterized in that, it includes a cylinder for loading coal and a first driving mechanism for driving the rotation of the cylinder. One end of the cylinder is connected with a heating mechanism, and the other end is connected with a feed hopper through a feed pipe. The feed hopper is connected with a dust isolation mechanism, and the dust isolation mechanism includes a slide plate, a shielding plate and a slide member which are arranged in the feed hopper from top to bottom in sequence. Wherein, the slide plate is configured as a cone, and its cross-section gradually shrinks from top to bottom. The slide plate has an upper opening and a lower opening. The side wall of the upper opening is fixedly connected to the top end of the inner wall of the feed hopper. The middle part of the shielding plate extends into the lower opening and has a gap with the lower opening. A radially inwardly recessed material dropping opening is formed on the side wall of the shielding plate. A spiral downward material feeding space is formed between the slide member and the feed hopper. The material dropping opening is arranged corresponding to the material feeding space. The side walls of the shielding plate and the slide member respectively abut against the inner wall of the feed hopper. The shielding plate includes a first shielding member partially extending into the lower opening and a second shielding member surrounding the outer periphery of the first shielding member. The first shielding member is configured as a cone, and its cross-section gradually increases from top to bottom. The shielding plate is arranged obliquely downward. The material dropping opening is formed on the lower side wall of the second shielding member. The second shielding member and the slide plate are fixedly connected by a fixing rod. The slide member includes a slide plate spirally arranged downward and a baffle perpendicularly connected to the inner wall of the slide plate. The upper end of the slide plate is fixedly connected to the bottom wall of the shielding plate near the material dropping opening. The outer wall of the slide plate abuts against the inner wall of the feed hopper. The heating mechanism includes a dryer connected to one end of the cylinder through a heat preservation pipe. One end of the heat preservation pipe close to the cylinder is rotatably connected with a stirring assembly extending into the cylinder. The stirring assembly includes a stirring rod connected to the heat preservation pipe and a plurality of U-shaped pipes arranged at intervals along the radial direction on the outer periphery of the stirring rod. Wherein, the stirring rod extends along the axial direction of the cylinder. The stirring rod and the U-shaped pipes respectively form cavities, and each cavity is respectively communicated with the heat preservation pipe. A plurality of uniformly distributed heat dissipation holes are respectively formed on the stirring rod and / or the U-shaped pipes. The U-shaped pipe has two relatively arranged side pipe sections. A straight pipe parallel to the stirring rod is connected between the two side pipe sections. A cavity communicated with the U-shaped pipe is formed on the straight pipe, and a plurality of uniformly distributed heat dissipation holes are formed on the straight pipe.

2. The coal drying device according to claim 1, characterized in that, it further includes a corrugated pipe connected to the top end of the slide plate.

3. The coal drying device according to claim 1, characterized in that, the first driving mechanism includes a first motor, a first gear connected to the driving shaft of the first motor, and a second gear sleeved on the cylinder. The first gear meshes with the second gear.

4. The coal drying device according to any one of claims 1-3, characterized in that, The coal drying device further includes a second driving mechanism for driving the stirring assembly to rotate.

5. The coal drying device according to claim 1, wherein, it further includes a mounting seat having a mounting hole, and the cylinder body is rotatably mounted in the mounting hole.

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