Coal conveying dust recovery device

Abstract

The utility model discloses a coal conveying dust recovery device, which effectively facilitates the removal and recovery of dust when coal falls, and comprises a coal feeding sleeve for receiving the coal, the lower side of the coal feeding sleeve is communicated with a dust collection sleeve, the lower side of the dust collection sleeve is communicated with a first feed opening, the outer side of the dust collection sleeve is provided with a negative pressure sleeve, and the outer side of the negative pressure sleeve is provided with a second feed opening. A plurality of rotatable cleaning brushes are arranged between the dust collection sleeve and the negative pressure sleeve, a first dust remover and a second dust remover are arranged on the front side of the negative pressure sleeve, a stacking area is arranged on the lower side of the first discharging port, a conveying belt is arranged at the lower end of the first dust remover and the lower end of the second dust remover, and the rear end of the conveying belt is connected with the stacking area. The device is novel in structure, ingenious in conception and easy and convenient to operate, the concentration of pulverized coal in air is effectively reduced, the pulverized coal is conveniently sucked, the recovery probability of the pulverized coal is improved, the good pulverized coal cleaning effect is achieved, and workers can conveniently maintain the device.

Description

Technical Field

[0001] This utility model belongs to the field of thermal power generation technology and relates to a coal conveying dust recovery device. Background Technology

[0002] Power plants are factories that produce electricity. Electricity can be produced using wind power, hydropower, and chemical power generation, but my country's main electricity production still relies on thermal power generation through burning coal.

[0003] Coal conveyors are typically used for transporting coal, but the following problems exist during the conveying process:

[0004] 1. Defects of traditional dust removal: Bag / water bath dust collectors are prone to clogging and have insufficient collection efficiency for suspended coal powder with a particle size <10μm;

[0005] 2. Difficulty in coal dust recovery: The collected coal dust needs to be manually transported, resulting in a low recovery rate;

[0006] Based on the above problems, a coal conveying dust recovery device is needed to recover coal dust during the coal conveying process, especially during the coal falling process. Utility Model Content

[0007] To address the aforementioned problems, this utility model proposes a coal conveying dust recovery device, which effectively solves the problems in the prior art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A coal conveying dust recovery device includes a coal feeding sleeve for receiving coal, a dust suction sleeve connected to the lower side of the coal feeding sleeve, a first discharge port connected to the lower side of the dust suction sleeve, a negative pressure sleeve for providing negative pressure to the inside of the dust suction sleeve fitted on the outer side of the dust suction sleeve, a plurality of rotatable cleaning brushes provided between the dust suction sleeve and the negative pressure sleeve, a first dust collector and a second dust collector provided on the front side of the negative pressure sleeve, a material stacking area provided below the first discharge port, a conveyor belt provided at the lower end of the first dust collector and the second dust collector, and the rear end of the conveyor belt connected to the material stacking area.

[0010] Preferably, the lower side of the coal feeding sleeve is symmetrically provided with first inclined plates that are fixedly connected to the dust suction sleeve, and the lower side of each first inclined plate is provided with a second inclined plate that is fixedly connected to the dust suction sleeve.

[0011] Preferably, the side wall of the vacuum sleeve is provided with multiple vacuum holes, and the negative pressure sleeve is connected to the interior of the vacuum sleeve through the vacuum holes.

[0012] Preferably, the upper side of the inside of the negative pressure sleeve is provided with a rotatable rotating plate, and a plurality of connecting rods are fixedly connected to the lower side of the rotating plate. Each connecting rod is rotatably connected to a rolling wheel that can rotate relative to the connecting rod, and the upper end face of each cleaning brush is fixedly connected to the corresponding rolling wheel.

[0013] Preferably, a plurality of fixing rings are provided between the vacuum sleeve and the negative pressure sleeve, and each of the cleaning brushes is rotatably connected to the fixing ring.

[0014] Preferably, the bottom of the inner side of the negative pressure sleeve is provided with an arc-shaped groove, and the bottom of the cleaning brush is adapted to the arc-shaped groove.

[0015] Preferably, a gear ring is fixedly connected to the upper side of the rotating plate, a gear that meshes with the gear ring is rotatably connected inside the negative pressure sleeve, a motor is fixedly connected to the upper side of the negative pressure sleeve, and the output shaft of the motor passes through the negative pressure sleeve and is coaxially fixedly connected to the gear.

[0016] Preferably, the first dust collector is a cyclone separator, and the bottom of the cyclone separator is provided with a second discharge port.

[0017] Preferably, the second dust collector is a ceramic membrane filter, and the outlet of the ceramic membrane filter is provided with a third discharge port.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model has a first dust collector and a second dust collector, which can absorb and filter coal dust in the air, thereby increasing the cleanliness of the working environment and reducing raw material loss.

[0020] 2. This utility model has a conveyor belt, which can recover the coal powder and increase the utilization rate of coal. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram showing the location of the second feed port in this utility model.

[0023] Figure 3 This is a schematic diagram of the internal structure of the negative pressure sleeve in this utility model.

[0024] Figure 4 This is a schematic diagram showing the positions of the first inclined plate and the second inclined plate in this utility model.

[0025] Figure 5 This utility model Figure 3 A magnified view of a portion of region A in the middle.

[0026] In the diagram: 1. Coal feeding sleeve; 2. Dust suction sleeve; 3. First feeding port; 4. Negative pressure sleeve; 5. Cleaning brush; 6. First dust collector; 7. Second dust collector; 8. Stacking area; 9. Conveyor belt; 10. First inclined plate; 11. Second inclined plate; 12. Dust suction hole; 13. Rotating plate; 14. Connecting rod; 15. Rolling wheel; 16. Fixing ring; 17. Arc groove; 18. Gear ring; 19. Gear; 20. Motor; 21. Second feeding port; 22. Third feeding port. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The following is in conjunction with the appendix Figures 1 to 5 The specific embodiments of this utility model will be described in further detail.

[0029] Depend on Figures 1 to 5 As shown, this utility model includes a coal feeding sleeve 1 for receiving coal. To facilitate the removal and recycling of dust during coal falling, a dust suction sleeve 2 is connected to the lower side of the coal feeding sleeve 1. A first discharge port 3 is connected to the lower side of the dust suction sleeve 2. A negative pressure sleeve 4 for providing negative pressure to the inside of the dust suction sleeve 2 is fitted on the outside of the dust suction sleeve 2. Multiple rotatable cleaning brushes 5 are provided between the dust suction sleeve 2 and the negative pressure sleeve 4. A first dust collector 6 and a second dust collector 7 are provided on the front side of the negative pressure sleeve 4. A stockpiling area 8 is provided below the first discharge port 3. A conveyor belt 9 is provided at the lower end of the first dust collector 6 and the second dust collector 7. The rear end of the conveyor belt 9 is connected to the stockpiling area 8. The first dust collector 6 is a cyclone separator, and a second discharge port 21 is provided at the bottom of the cyclone separator. The second dust collector 7 is a ceramic membrane filter, and a third discharge port 22 is provided at the outlet of the ceramic membrane filter.

[0030] It should be noted that the front side of the negative pressure sleeve 4 has a first connecting hole that connects to the feed inlet of the first dust collector 6, and the gas outlet of the first dust collector 6 connects to the feed inlet of the second dust collector 7; the conveyor belt 9 is existing technology and is used to transport pulverized coal. Its working face runs from front to back, that is, it can transport the pulverized coal falling from the second discharge port 21 and the third discharge port 22 backward to the stockpiling area 8.

[0031] In other words, in this embodiment, the feed inlet of the cyclone separator is connected to the front side of the negative pressure sleeve 4. The cyclone separator is used to provide negative pressure to the inside of the negative pressure sleeve 4, so that the air, coal powder and dust inside can enter the cyclone separator for the first filtration. Through the action of the cyclone separator, the dust is discharged from the second discharge port 21, and the separated gas is discharged through the upper side of the cyclone separator and enters the ceramic membrane filter for the second filtration. The filtered gas is discharged directly, and the filtered particles are discharged through the third discharge port 22.

[0032] In use, the upper side of the coal feeding sleeve 1 is connected to the coal conveyor belt, so that the coal can fall from the upper side of the coal feeding sleeve 1 into the dust suction sleeve 2, and then fall into the stockpiling area 8 through the first discharge port 3. During the process of the coal falling, the negative pressure sleeve 4 will continuously suck up the gas, so that the gas containing floating dust inside the dust suction sleeve 2 can be sucked into the first dust collector 6 for primary dust removal, and then through the second dust collector 7 for secondary dust removal. The dust collected by the first dust collector 6 and the second dust collector 7 will fall from the second discharge port 21 and the third discharge port 22 respectively, and fall into the upper end of the conveyor belt 9. The conveyor belt 9 will then transport the recovered coal powder back to the stockpiling area 8.

[0033] Furthermore, by Figures 1 to 5 As shown, in order to reduce the concentration of coal dust in the air, the lower side of the coal feeding sleeve 1 is symmetrically provided with first inclined plates 10 that are fixedly connected to the dust suction sleeve 2, and each first inclined plate 10 is provided with a second inclined plate 11 that is fixedly connected to the dust suction sleeve 2 on its lower side.

[0034] It should be noted that both the first inclined plate 10 and the second inclined plate 11 are made of rubber, and the gap between the two second inclined plates 11 is smaller than the gap between the two first inclined plates 10. This design allows the coal to fall more concentratedly. By using the inclined first inclined plate 10 and the second inclined plate 11, the coal feeding speed can be reduced and the coal can be made more concentrated, thereby reducing the generation of coal dust.

[0035] Furthermore, by Figures 2 to 3 As shown, in order to facilitate the suction of coal dust, the side wall of the dust suction sleeve 2 is provided with multiple dust suction holes 12, and the negative pressure sleeve 4 is connected to the interior of the dust suction sleeve 2 through the dust suction holes 12.

[0036] Furthermore, by Figures 2 to 3As shown, in order to improve the recovery probability of coal powder, a rotatable rotating plate 13 is provided on the upper side of the inside of the negative pressure sleeve 4. The inner and outer sides of the rotating plate 13 are rotatably connected to the dust suction sleeve 2 and the negative pressure sleeve 4 respectively, which can isolate the coal powder inside the negative pressure sleeve 4. Multiple connecting rods 14 are fixedly connected to the lower side of the rotating plate 13. Each connecting rod 14 is rotatably connected to a rolling wheel 15 that can rotate relative to the connecting rod 14. The upper end face of each cleaning brush 5 is fixedly connected to the corresponding rolling wheel 15.

[0037] In this embodiment, the rolling wheel 15 abuts against the inner wall of the negative pressure sleeve 4. While the rolling wheel 15 revolves, it will rotate under the friction with the inner wall of the negative pressure sleeve 4, thereby driving the cleaning brush 5 to rotate.

[0038] In another embodiment, a planetary gear 19 is also fitted on the outer side of the rolling wheel 15, and an internal gear ring 18 is fixedly connected to the inner side wall of the negative pressure sleeve 4. The internal gear ring 18 meshes with the planetary gear 19, and the planetary gear 19 drives the rolling wheel 15 to rotate when it moves with the rolling wheel 15.

[0039] Furthermore, by Figures 2 to 5 As shown, in order to achieve a good coal dust cleaning effect, multiple fixing rings 16 are provided between the suction sleeve 2 and the negative pressure sleeve 4, and each cleaning brush 5 is rotatably connected to the fixing ring 16; an arc-shaped groove 17 is opened at the bottom of the inner side of the negative pressure sleeve 4, and the bottom of the cleaning brush 5 is adapted to the arc-shaped groove 17; the cleaning brush 5 can clean the outer wall of the suction sleeve and the inner wall of the negative pressure sleeve 4, so that the adsorbed coal dust can float again, which is convenient for the first dust collector 6 to suck and separate.

[0040] Furthermore, by Figures 2 to 5 As shown, to facilitate maintenance by staff, a gear ring 18 is fixedly connected to the upper side of the rotating plate 13. A gear 19 that meshes with the gear ring 18 is rotatably connected inside the negative pressure sleeve 4. A motor 20 is fixedly connected to the upper side of the negative pressure sleeve 4. The output shaft of the motor 20 passes through the negative pressure sleeve 4 and is coaxially fixedly connected to the gear 19. The motor 20 is a servo motor 20, which is existing technology and will not be described in detail here.

[0041] In use, air carrying coal dust enters the negative pressure sleeve 4 through the dust suction hole 12 and is then transported into the first dust collector 6. At this time, the motor 20 drives the gear ring 18 to rotate through the gear 19, which in turn drives the rotating plate 13 to rotate. The rotating plate 13 drives the rolling wheel 15 to revolve through multiple connecting rods 14. Under the action of the rolling wheel 15 and the inner wall of the negative pressure sleeve 4, the rolling wheel 15 drives the cleaning brush 5 to rotate, cleaning the area between the negative pressure sleeve 4 and the suction sleeve, so that the first dust collector 6 can better attract and remove dust from the negative pressure sleeve 4.

[0042] In use, the upper side of the coal feeding sleeve 1 is first connected to the coal conveyor belt, so that the coal can fall from the upper side of the coal feeding sleeve 1 into the dust suction sleeve 2, and then fall into the stockpiling area 8 through the first discharge port 3. During the falling of the coal, the negative pressure sleeve 4 will continuously suck up the gas, so that the gas containing floating dust inside the dust suction sleeve 2 can be sucked into the first dust collector 6 for primary dust removal. Then, it will pass through the second dust collector 7 for secondary dust removal. The dust collected by the first dust collector 6 and the second dust collector 7 will fall from the second discharge port 21 and the third discharge port 22 respectively, and fall into the upper end of the conveyor belt 9. The conveyor belt 9 will then transport the recovered coal powder back to the stockpiling area 8.

[0043] This utility model features a novel structure, ingenious design, and simple and convenient operation. It effectively facilitates the removal and recovery of dust during coal fall, reduces the concentration of coal dust in the air, facilitates coal dust absorption, increases the probability of coal dust recovery, achieves excellent coal dust cleaning results, and makes maintenance easier for staff.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal dust recovery device comprising a lower coal sleeve for receiving a coal charge, characterised in that: The lower side of the lower coal sleeve is communicated with a dust suction sleeve, the lower side of the dust suction sleeve is communicated with a first discharging port, the outer side of the dust suction sleeve is sleeved with a negative pressure sleeve for providing negative pressure inside the dust suction sleeve, a plurality of rotatable cleaning brushes are arranged between the dust suction sleeve and the negative pressure sleeve, the front side of the negative pressure sleeve is provided with a first dust remover and a second dust remover, the lower side of the first discharging port is provided with a stacking area, the lower ends of the first dust remover and the second dust remover are provided with a conveying belt, and the rear end of the conveying belt is connected with the stacking area.

2. The coal dust recovery device according to claim 1, characterized in that: The lower side of the lower coal sleeve is communicated with a dust suction sleeve, the lower side of the dust suction sleeve is communicated with a first discharging port, the outer side of the dust suction sleeve is sleeved with a negative pressure sleeve for providing negative pressure inside the dust suction sleeve, a plurality of rotatable cleaning brushes are arranged between the dust suction sleeve and the negative pressure sleeve, the front side of the negative pressure sleeve is provided with a first dust remover and a second dust remover, the lower side of the first discharging port is provided with a stacking area, the lower ends of the first dust remover and the second dust remover are provided with a conveying belt, and the rear end of the conveying belt is connected with the stacking area.

3. The coal dust recovery device according to claim 1, characterized in that: The side wall of the dust suction sleeve is provided with a plurality of dust suction holes, and the negative pressure sleeve communicates with the inside of the dust suction sleeve through the dust suction holes.

4. The coal dust recovery device according to claim 1, characterized in that: The upper side of the inside of the negative pressure sleeve is provided with a rotatable rotating plate, the lower side of the rotating plate is fixedly connected with a plurality of connecting rods, the lower side of each connecting rod is rotatably connected with a rolling wheel rotatable relative to the connecting rod, and the upper end surface of each cleaning brush is fixedly connected with a corresponding rolling wheel.

5. A coal dust conveying and recovering device according to claim 4, characterized in that: A plurality of fixed rings are arranged between the dust suction sleeve and the negative pressure sleeve, and each cleaning brush is rotatably connected with a fixed ring.

6. The coal dust recovery device according to claim 1, characterized in that: An arc-shaped groove is arranged in the bottom of the inner side of the negative pressure sleeve, and the bottom of the cleaning brush is matched with the arc-shaped groove.

7. The coal dust recovery device according to claim 4, characterized in that: The upper side of the rotating plate is fixedly connected with a gear ring, the inside of the negative pressure sleeve is rotatably connected with a gear meshing with the gear ring, the upper side of the negative pressure sleeve is fixedly connected with a motor, and the output shaft of the motor is coaxially fixedly connected with the gear through the negative pressure sleeve.

8. The coal dust recovery device according to claim 1, characterized in that: The first dust remover is a cyclone separator, and the bottom of the cyclone separator is provided with a second discharging port.

9. A coal dust recovery device according to claim 8, characterized in that: The second dust remover is a ceramic membrane filter, and the discharge port of the ceramic membrane filter is provided with a third discharging port.

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