A high-efficiency coal unloading device for coal yard

Abstract

The present invention relates to the field of coal mine production technology, and in particular to an efficient coal unloading device in a coal yard, including a unloading rack and a water spraying platform, wherein the unloading rack is arranged at an angle, the water spraying platform is located at the upper end of the feed port, and frames are symmetrically arranged on both sides of the outside of the unloading rack, and a rotating shaft is rotatably arranged on the opposite side between the two frames, and a water absorption column is connected between the two rotating shafts, and a plurality of slots are opened on the unloading rack, and the outer surface of the water absorption column extends through the slots to the inner side of the unloading rack, and the slots and the outer surface of the water absorption column conflict with each other, and the center of the water absorption column is located below the unloading rack. After spraying and dust reduction on the coal ore that is about to be unloaded, the present invention uses a plurality of rotating water absorption columns to absorb excess water, thereby reducing the problem that the coal ore and coal slag cannot pass through the unloading rack smoothly due to the tension of water when unloading the coal.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine production, and in particular to a high-efficiency coal unloading device in a coal yard. Background Art

[0002] A coal mine is an area where humans exploit coal resources in coal-rich mining areas. It is generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, people generally choose to dig tunnels underground to mine coal. This is an underground coal mine. When the coal seam is very close to the surface, people generally choose to directly strip off the surface soil layer to mine coal. This is an open-pit coal mine. The scope of a coal mine includes a large area above and below the ground and related facilities. A coal mine is a reasonable space excavated by humans when digging geological strata rich in coal. It usually includes tunnels, shafts and mining faces. Coal is the main solid fuel and a type of combustible organic rock.

[0003] When transporting coal ore mined from a coal mine, the coal ore being mined is transferred to another area by gravity through a discharge rack. During the transportation process, in order to prevent dust problems, the coal slag is sprayed when it enters the discharge rack to wet the coal slag to prevent the problem of fine particles being raised during the unloading process;

[0004] However, coal ore contains lumps and coal mud formed after impact and fragmentation. When this coal mud meets water, the tension of water causes the coal ore and coal mud to slide down and encounter great resistance, making it impossible to unload coal efficiently, and even causing blockage problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that coal cannot be unloaded efficiently and even causes blockage, and to propose a high-efficiency coal unloading device for a coal yard.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A coal yard high-efficiency coal unloading device is designed, comprising a unloading rack and a water spraying platform, the unloading rack is arranged in an inclined manner, the water spraying platform is located at the upper end of the feed port, frames are symmetrically arranged on both sides of the outside of the unloading rack, a rotating shaft is rotatably arranged on the opposite side between the two frames, a water absorption column is connected between the two rotating shafts, a plurality of slots are opened on the unloading rack, the outer surface of the water absorption column passes through the slots and extends to the inner side of the unloading rack, and the slots and the outer surface of the water absorption column conflict with each other, and the center of the water absorption column is located below the unloading rack;

[0008] A dust prevention structure is provided at the discharge end of the unloading rack, and the dust prevention structure includes a mounting frame, a turning plate, a fixing clamp, a small seamless steel pipe, a large seamless steel pipe, a first water supply hole and a second water supply hole. The mounting frame is symmetrically mounted on the two side walls of the unloading rack close to the discharge port, and a small seamless steel pipe is connected between the two mounting frames via a fixing clamp. The large seamless steel pipe is sleeved on the outside of the small seamless steel pipe, and the turning plates are distributed in a ring array on the outside of the large seamless steel pipe.

[0009] Preferably, the slot is arranged in an arc shape along the long side direction, and the parallel side walls of the slot fit the outer surface of the water absorption column.

[0010] Preferably, the water-absorbing column is made of polyurethane PVA sponge material.

[0011] Preferably, the size of the small seamless steel pipe matches the size of the large seamless steel pipe, a number of through-type first water holes are evenly opened on the outside of the large seamless steel pipe, and a number of through-type second water holes are evenly opened on the outside of the small seamless steel pipe, and the first water holes and the second water holes cooperate with each other.

[0012] Preferably, a collecting structure and a conveying structure are installed at the bottom of the unloading frame on one side of the water absorption column.

[0013] Preferably, the collecting structure includes a collecting bucket, a water collecting trough and a water pipe, the top of the collecting bucket is installed at the bottom of the unloading frame, and the upper part of the collecting bucket is open, the water collecting trough is opened at one end close to the collecting bucket, and a plurality of the water collecting troughs are distributed in a linear array inside the collecting bucket, the collecting bucket and the water absorption column conflict with each other, and the water pipe is installed on the collecting bucket.

[0014] Preferably, the conveying structure includes a plurality of water supply pipes and a water collecting pipe, the plurality of water supply pipes and the water collecting pipes are interconnected, the water collecting pipes on both sides are respectively connected to the two end faces of the small seamless steel pipe, and the water supply pipes are interconnected with the interior of the small seamless steel pipe through the water collecting pipe.

[0015] The invention proposes an efficient coal unloading device for a coal yard, which has the beneficial effect that after spraying and reducing dust on the coal ore to be unloaded, the efficient coal unloading device for a coal yard adopts a plurality of rotating water absorption columns to absorb excess water, thereby reducing the problem that the coal ore and coal slag cannot pass through the unloading rack smoothly due to water tension during unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a high-efficiency coal unloading device for a coal yard.

[0017] Figure 2This is a structural top view of a high-efficiency coal unloading device for a coal yard proposed by the present invention.

[0018] Figure 3 This is a structural front view of a high-efficiency coal unloading device for a coal yard proposed by the present invention.

[0019] Figure 4 This is an enlarged view of the position structure of the water absorption column of the coal yard high-efficiency coal unloading device proposed by the present invention.

[0020] Figure 5 This is an enlarged structural diagram of the dust prevention structure of a high-efficiency coal unloading device in a coal yard proposed by the present invention.

[0021] Figure 6 This is an enlarged structural diagram of the collection structure of a high-efficiency coal unloading device in a coal yard proposed by the present invention.

[0022] Figure 7 This is an enlarged structural diagram of part A of a high-efficiency coal unloading device for a coal yard proposed by the present invention.

[0023] In the figure: a water spraying platform 1, a discharge rack 2, a slot hole 3, a water suction column 4, a frame 5, a water collecting pipe 6, a water delivery pipe 7, a mounting frame 8, a turning plate 9, a fixing clamp 10, a small seamless steel pipe 11, a large seamless steel pipe 12, a collecting bucket 13, a rotating shaft 14, a water collecting trough 15, a first water delivery hole 16, and a second water delivery hole 17. DETAILED DESCRIPTION

[0024] 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. Example

[0025] Reference Figure 1-2 , a coal yard efficient coal unloading device, comprising a unloading rack 2 and a water spraying platform 1, the unloading rack 2 is arranged in an inclined manner, the water spraying platform 1 is located at the upper end of the feed port, frames 5 are symmetrically arranged on both sides of the outside of the unloading rack 2, a rotating shaft 14 is rotatably arranged on the opposite side between the two frames 5, a water absorption column 4 is connected between the two rotating shafts 14, a plurality of slots 3 are opened on the unloading rack 2, the outer surface of the water absorption column 4 passes through the slots 3 and extends to the inner side of the unloading rack 2, and the slots 3 and the outer surfaces of the water absorption column 4 conflict with each other, and the center of the water absorption column 4 is located below the unloading rack 2;

[0026] A high-pressure nozzle is installed on the water spraying platform 1. After the coal ore enters the unloading rack 2, the high-pressure nozzle sprays water to cover the coal ore and soak the coal ore. The coal ore includes formed stones and coal ore slag formed by impact. The coal ore slag will fly during the movement. Soaking the coal ore slag with water ensures that there will be no dust during the ore transfer process.

[0027] During the transfer process, the formed stones will be located in the upper layer, and the coal sludge and the poured water will enter the lower layer of the unloading rack 2 along with the formed stones, and move along the inner wall of the unloading rack 2. When the material contacts the water absorption column 4 inside the slot hole 3, friction is generated between the sliding material and the water absorption column 4, driving the water absorption column 4 to rotate, and the upper end height of the water absorption column 4 is slightly higher than the height of the bottom of the unloading rack 2, which will not affect the movement of the material. The rotating water absorption column 4 will fully absorb the water in the coal sludge at the bottom of the material, while preventing dust, and solving the problem of increased coal ore transportation resistance and reduced transportation efficiency due to the tension of liquid water.

[0028] refer to Figure 4 The slot hole 3 is arranged in an arc shape along the long side direction, and the parallel side walls of the slot hole 3 are in contact with the outer surface of the water absorption column 4. At the same time, arc grooves matching the water absorption column 4 are opened on both sides of the slot hole 3 along the long side direction. The port position of the arc groove can scrape off the coal mine mud slag adhering to the outer surface of the water absorption column 4, thereby avoiding the problem of coal mine mud slag leakage.

[0029] The water absorption column 4 is made of polyurethane PVA sponge material, which is a water-absorbing and wear-resistant material with the characteristics of water absorption and durability. Example

[0030] When the material reaches the discharge port 2 of the unloading rack 2, the material has a certain initial velocity to be thrown. The coal raw materials are in an outdoor windy environment. Combined with the previous adsorption treatment of the water in the coal raw materials, the fine ore mud is loosened, and the problem of dust will still occur;

[0031] refer to Figure 1 , Figure 5 and Figure 7 The difference between this embodiment and embodiment 1 is that a dust-proof structure is provided at one end of the discharge rack 2, and the dust-proof structure includes a mounting rack 8, a flipping plate 9, a fixing clamp 10, a small seamless steel pipe 11, a large seamless steel pipe 12, a first water delivery hole 16 and a second water delivery hole 17. The mounting rack 8 is symmetrically mounted on the two side walls of the discharge rack 2 near the discharge port, and a small seamless steel pipe 11 is connected between the two mounting racks 8 through a fixing clamp 10. The large seamless steel pipe 12 is sleeved on the outside of the small seamless steel pipe 11. The flipping plate 9 is distributed in a circular array on the outside of the large seamless steel pipe 12. The size of the small seamless steel pipe 11 matches the size of the large seamless steel pipe 12. A plurality of through-type first water delivery holes 16 are evenly opened on the outside of the large seamless steel pipe 12, and a plurality of through-type second water delivery holes 17 are evenly opened on the outside of the small seamless steel pipe 11. The first water delivery holes 16 and the second water delivery holes 17 cooperate with each other.

[0032] The large seamless steel pipe 12 is rotatably set on the small seamless steel pipe 11. When the coal ore contacts the external turning plate 9, an external force in the tangential direction of the large seamless steel pipe 12 is provided, and the external force is on the same side as the forward direction of the material. The material continuously falls on the outside of the turning plate 9, driving the large seamless steel pipe 12 to rotate differently, and the small seamless steel pipe 11 does not rotate during the process. When the large seamless steel pipe 12 rotates relative to the small seamless steel pipe 11, the second water delivery hole 17 on the small seamless steel pipe 11 will overlap with the first water delivery hole 16. When the second water delivery hole 17 overlaps with the first water delivery hole 16, the water on the inner side of the small seamless steel pipe 11 will pass through the second water delivery hole 17 and the first water delivery hole to flow onto the turning plate 9, and directly and fully contact with the coal raw materials falling on the turning plate 9. After being fully soaked, the problem of dust is suppressed. Example

[0033] When solving the problem in Example 2, it is necessary to re-wet the coal raw materials. However, considering that the coal raw materials lose the wind shielding effect of the unloading rack 2 when leaving the unloading rack 2, it is necessary to increase the pressure and flow rate when spraying water on them, resulting in a waste of resources, and it is impossible to ensure the effective wetting effect of the coal raw materials when they fall.

[0034] refer to Figure 3 and Figure 6 The difference between this embodiment and the embodiments 1 and 2 is that a collecting structure and a conveying structure are installed at the bottom of the discharge frame 2 on one side of the water absorption column 4, the collecting structure includes a collecting bucket 13, a water collecting trough 15 and a water delivery pipe 7, the top of the collecting bucket 13 is installed at the bottom of the discharge frame 2, and the upper part of the collecting bucket 13 is open, the water collecting trough 15 is opened at one end close to the collecting bucket 13, and a plurality of water collecting troughs 15 are distributed in a linear array inside the collecting bucket 13, the collecting bucket 13 and the water absorption column 4 conflict with each other, the water delivery pipe 7 is installed on the collecting bucket 13, the conveying structure includes a plurality of water delivery pipes 7 and a water collecting pipe 6, a plurality of water delivery pipes 7 and the water collecting pipe 6 are interconnected, the water collecting pipes 6 on both sides are respectively connected to the two end faces of the small seamless steel pipe 11, and the water delivery pipe 7 is interconnected with the inside of the small seamless steel pipe 11 through the water collecting pipe 6;

[0035] A collecting bucket 13 is arranged at the bottom of the discharge rack 2 in cooperation with the water absorption column 4, and the eaves of the collecting bucket 13 and the water absorption column 4 are in conflict with each other. When the water absorption column 4 absorbs water and swells, the collecting bucket 13 will squeeze out the water absorbed by the water absorption column 4, and let the water flow into the inner side of the collecting bucket 13 through the water collecting trough 15 for collection. The friction between the water absorption column 4 and the coal mine raw materials is greater than the resistance of the collecting bucket 13 to the water absorption column 4, so as to ensure that the water absorption column 4 can roll smoothly in the slot hole 3, and the collected water is gathered in the water collecting pipe 6 through a plurality of water supply pipes 7, and the collected water is sent to the small seamless steel pipe 11 through the water collecting pipe 6 to realize the reuse of resources.

[0036] The working principle of the device is:

[0037] A high-pressure nozzle is installed on the water spraying platform 1. After the coal ore enters the discharge rack 2, the high-pressure nozzle sprays water to cover the coal ore. During the transfer process, the formed stones will be located on the upper layer, and the coal sludge and the poured water will enter the lower layer of the discharge rack 2 along the formed stones, and move along the inner wall of the discharge rack 2. When the material contacts the water absorption column 4 on the inner side of the slot hole 3, friction is generated between the sliding material and the water absorption column 4, driving the water absorption column 4 to rotate, and the upper end height of the water absorption column 4 is slightly higher than the height of the bottom of the discharge rack 2, which will not affect the movement of the material. The rotating water absorption column 4 will fully absorb the water in the coal sludge in the bottom layer of the material. At the same time, arc grooves matching the water absorption column 4 are opened on both sides of the slot hole 3 along the long side direction, and the port position of the arc groove will scrape off the coal sludge adhering to the outer surface of the water absorption column 4;

[0038] In order to solve the above technical problems, the large seamless steel pipe 12 is rotatably set on the small seamless steel pipe 11. When the coal ore contacts the external turning plate 9, an external force in the tangential direction of the large seamless steel pipe 12 will be provided, and the external force is on the same side as the forward direction of the material. The material continuously falls on the outside of the turning plate 9, driving the large seamless steel pipe 12 to rotate differently, and the small seamless steel pipe 11 does not rotate during the process. When the large seamless steel pipe 12 rotates relative to the small seamless steel pipe 11, the second water delivery hole 17 on the small seamless steel pipe 11 will overlap with the first water delivery hole 16. When the second water delivery hole 17 overlaps with the first water delivery hole 16, the water on the inner side of the small seamless steel pipe 11 will pass through the second water delivery hole 17 and the first water delivery hole to flow onto the turning plate 9, and directly and fully contact with the coal raw materials falling on the turning plate 9.

[0039] A collecting bucket 13 is arranged at the bottom of the discharge rack 2 in cooperation with the water absorption column 4, and the eaves of the collecting bucket 13 and the water absorption column 4 are in conflict with each other. When the water absorption column 4 absorbs water and swells, the collecting bucket 13 will squeeze out the water absorbed by the water absorption column 4, and let the water flow into the inner side of the collecting bucket 13 through the water collecting trough 15 for collection. The friction between the water absorption column 4 and the coal mine raw materials is greater than the resistance of the collecting bucket 13 to the water absorption column 4, so as to ensure that the water absorption column 4 can roll smoothly in the slot hole 3, and the collected water is gathered in the water collecting pipe 6 through a plurality of water supply pipes 7, and the collected water is sent to the small seamless steel pipe 11 through the water collecting pipe 6.

[0040] 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 yard high-efficiency coal unloading device, comprising a unloading rack (2) and a water spraying platform (1), wherein the unloading rack (2) is arranged in an inclined manner, and the water spraying platform (1) is located at the upper end of the feed inlet, characterized in that: The unloading frame (2) has frames (5) symmetrically arranged on both sides of the outside, and a rotating shaft (14) is rotatably arranged on the opposite side between the two frames (5). A water absorption column (4) is connected between the two rotating shafts (14). The unloading frame (2) has a plurality of slots (3). The outer surface of the water absorption column (4) extends through the slots (3) to the inner side of the unloading frame (2), and the slots (3) and the outer surface of the water absorption column (4) are in contact with each other. The center of the water absorption column (4) is located below the unloading frame (2); A dust prevention structure is provided at one end of the discharge rack (2), the dust prevention structure comprising a mounting rack (8), a turning plate (9), a fixing clamp (10), a small seamless steel pipe (11), a large seamless steel pipe (12), a first water delivery hole (16) and a second water delivery hole (17); the mounting rack (8) is symmetrically mounted on two side walls of the discharge rack (2) close to the discharge port; a small seamless steel pipe (11) is connected between the two mounting racks (8) via a fixing clamp (10); the large seamless steel pipe (12) is sleeved on the outside of the small seamless steel pipe (11); and the turning plates (9) are distributed in an annular array on the outside of the large seamless steel pipe (12); A collecting structure and a conveying structure are installed at the bottom of the discharge rack (2) on one side of the water absorption column (4); The collecting structure comprises a collecting bucket (13), a water collecting trough (15) and a water delivery pipe (7); the top of the collecting bucket (13) is mounted on the bottom of the discharge rack (2), and the upper part of the collecting bucket (13) is open; the water collecting trough (15) is opened at one end close to the collecting bucket (13), and a plurality of the water collecting troughs (15) are distributed in a linear array inside the collecting bucket (13); the collecting bucket (13) and the water absorption column (4) are in conflict with each other, and the water delivery pipe (7) is mounted on the collecting bucket (13); The conveying structure comprises a plurality of water delivery pipes (7) and a water collecting pipe (6); the plurality of water delivery pipes (7) and the water collecting pipe (6) are interconnected; the water collecting pipes (6) on both sides are respectively interconnected with two end surfaces of the small seamless steel pipe (11); and the water delivery pipes (7) are interconnected with the interior of the small seamless steel pipe (11) through the water collecting pipe (6).

2. The high-efficiency coal unloading device for coal yard according to claim 1 is characterized in that: The slot hole (3) is arranged in an arc shape along the long side direction, and the parallel side walls of the slot hole (3) fit in with the outer surface of the water absorption column (4).

3. The high-efficiency coal unloading device for coal yard according to claim 2 is characterized in that: The water absorption column (4) is made of polyurethane PVA sponge material.

4. The coal yard efficient coal unloading device according to claim 3 is characterized in that: The size of the small seamless steel pipe (11) matches the size of the large seamless steel pipe (12); a plurality of through-type first water delivery holes (16) are evenly provided on the outside of the large seamless steel pipe (12); a plurality of through-type second water delivery holes (17) are evenly provided on the outside of the small seamless steel pipe (11); the first water delivery holes (16) and the second water delivery holes (17) cooperate with each other.

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