Dust removal device for raw coal bin

Abstract

The utility model discloses a dust removal device for a raw coal bin, which comprises a plurality of raw coal bin tanks which are arranged in parallel, and an arc-shaped dust outlet and a plurality of air inlets which are arranged on the outer side walls of the raw coal bin tanks, and the outer side walls of the raw coal bin tanks are fixedly connected with a plurality of inclined air inlet protection cylinders which are communicated with the air inlets. According to the utility model, under the interaction of the raw coal bin tank, the arc-shaped dust outlet, the air inlet, the sealing box, the processing box, the filter cotton pad and the air extractor, the air extractor can extract and discharge air in the raw coal bin tank to the outside through the arc-shaped dust outlet, the connecting pipeline and the processing box, and coal dust pervading in the raw coal bin tank can pass through the filter cotton pad along with the air, so that the coal dust is discharged to the outside. The filter cotton cushion can filter coal dust in the air, so that the filter cotton cushion can collect the coal dust, the concentration of the coal dust in the raw coal bin tank is reduced, the concentration of the coal dust in the raw coal bin tank is lower than the dangerous concentration all the time, and the possibility of explosion and spontaneous combustion of the coal dust is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal of raw coal silos, in particular to a dust removal device used for raw coal silos. Background Art

[0002] Raw coal bunker refers to the storage bin for raw coal, coal slime and other granular materials in thermal power plants, also known as raw coal silo. The production line of the coal making system is set up in a coal yard with complex terrain. The raw coal bunker transports the raw coal to the feeder through the coal pipeline, and then transports it to the lower mill for coal grinding.

[0003] At present, when the conveyor belt is feeding coal to the top of the raw coal silo, coal blocks will fall into the raw coal silo and accumulate. When the coal blocks fall and accumulate, a large amount of coal dust will be generated. Since the fully enclosed raw coal silo is a closed space, a large amount of coal dust pollution will be generated during the process of coal taking and stacking by the stacker. When the coal dust concentration is too high and reaches a dangerous concentration, there is a probability of coal dust explosion in the silo and coal self-ignition. Therefore, we proposed a dust removal device for the raw coal silo to solve the above problems. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the above-mentioned background technology and proposes a dust removal device for a raw coal silo.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A dust removal device for a raw coal silo, comprising a plurality of raw coal silo tanks arranged in parallel, and an arc-shaped dust outlet and a plurality of air inlets provided on the outer side walls of the raw coal silo tanks, a plurality of inclined air inlet protection cylinders connected to the air inlets being fixedly connected to the outer side walls of the raw coal silo tanks, a sealing box for sealing the arc-shaped dust outlet being fixedly connected to the outer side walls of the raw coal silo tanks, a treatment box being fixedly connected to the outer side walls of one of the raw coal silo tanks, the treatment box being located below the arc-shaped dust outlet, the treatment box and the plurality of sealing boxes being connected and communicated with each other through connecting pipes, a mounting port and an air extraction hole being respectively provided on the outer side walls and the bottom of the treatment box, a filter cotton pad being slidably connected to the inner side walls of the mounting port, the filter cotton pad and the mounting port being connected by a plurality of fixing bolts, an air pump being fixedly connected to the bottom of the treatment box, and the air inlet and the air extraction hole of the air pump being communicated with each other.

[0007] Preferably, the distances between two adjacent air inlets on the same raw coal silo tank are the same.

[0008] Preferably, the inner wall of the processing box is provided with a slot communicating with the installation port, and the outer wall of the filter cotton pad is slidably connected to the inner wall of the slot.

[0009] Preferably, the arc-shaped dust outlet and the inner side wall of the air inlet are both fixedly connected with an anti-falling net.

[0010] Preferably, a plurality of through holes are provided on the top of the processing box, and the bottom end of the connecting pipe is connected to the through holes.

[0011] The beneficial effects of the utility model are:

[0012] Under the interaction of the raw coal silo tank, arc-shaped dust outlet, air inlet, sealing box, treatment box, filter cotton pad and vacuum pump, the vacuum pump will extract the air in the raw coal silo tank through the arc-shaped dust outlet, connecting pipe and treatment box and discharge it to the outside. The coal dust diffused in the raw coal silo tank will also pass through the filter cotton pad with the air. The filter cotton pad can filter the coal dust in the air, so that the filter cotton pad can collect the coal dust, thereby reducing the coal dust concentration in the raw coal silo tank, so that the coal dust concentration in the raw coal silo tank is always lower than the dangerous concentration, thereby avoiding the possibility of explosion and spontaneous combustion of coal dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the dust removal device for raw coal silo proposed by the utility model;

[0014] Figure 2 It is a side sectional view of the dust removal device for raw coal bunker proposed by the utility model;

[0015] Figure 3 This is a top-sectional view of the dust removal device for raw coal silo proposed by the utility model.

[0016] In the figure: 1. Raw coal silo tank; 2. Arc-shaped dust outlet; 3. Air inlet; 4. Inclined air inlet protection cylinder; 5. Anti-fall net; 6. Sealing box; 7. Processing box; 8. Connecting pipe; 9. Installation port; 10. Exhaust hole; 11. Filter cotton pad; 12. Exhaust fan. DETAILED DESCRIPTION

[0017] 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 of the embodiments.

[0018] Reference Figure 1-3 , a dust removal device for a raw coal silo, comprising a plurality of raw coal silo tanks 1 arranged in parallel, and an arc-shaped dust outlet 2 and a plurality of air inlets 3 provided on the outer wall of the raw coal silo tank 1, wherein the distance between two adjacent air inlets 3 on the same raw coal silo tank 1 is the same, and an anti-falling net 5 is fixedly connected to the inner wall of the arc-shaped dust outlet 2 and the air inlet 3, and the anti-falling net 5 can prevent the coal blocks entering the raw coal silo tank 1 from entering the arc-shaped dust outlet 2 and the air inlet 3;

[0019] A plurality of inclined air inlet protection cylinders 4 connected to the air inlet 3 are fixedly connected to the outer wall of the raw coal silo tank 1, and a sealing box 6 that seals the arc-shaped dust outlet 2 is fixedly connected to the outer wall of the raw coal silo tank 1. A processing box 7 is fixedly connected to the outer wall of one of the raw coal silo tanks 1. The processing box 7 is located below the arc-shaped dust outlet 2. The processing box 7 and the plurality of sealing boxes 6 are connected and communicated through a connecting pipe 8. A plurality of through holes are opened on the top of the processing box 7, and the bottom end of the connecting pipe 8 is connected to the through holes;

[0020] The outer wall and bottom of the treatment box 7 are respectively provided with a mounting port 9 and an air extraction hole 10, the inner wall of the mounting port 9 is slidably connected with a filter cotton pad 11, the inner wall of the treatment box 7 is provided with a slot connected with the mounting port 9, and the outer wall of the filter cotton pad 11 is slidably connected with the inner wall of the slot;

[0021] The filter cotton pad 11 and the mounting port 9 are connected by a plurality of fixing bolts. An exhaust fan 12 is fixedly connected to the bottom of the processing box 7. The air inlet of the exhaust fan 12 is communicated with the exhaust hole 10. The exhaust fan 12 is a commonly used method in the prior art. The exhaust fan 12 can extract the air in the processing box 7 to the outside, which will not be elaborated here.

[0022] The functional principle of the utility model can be explained through the following operation mode: in the process of pouring coal into the raw coal silo tank 1, a large amount of coal dust will be generated in the raw coal silo tank 1 during the pouring process. The coal dust is tiny coal particles. The vacuum pump 12 is started, and the vacuum pump 12 draws the air in the processing box 7 outward. The processing box 7 will be in a negative pressure state, so that the outside air enters the raw coal silo tank 1 from the multiple air inlets 3. The air in the raw coal silo tank 1 will enter the processing box 7 through the arc dust outlet 2 and the connecting pipe 8, and the air will also pass through the filter cotton pad 11 to be filtered;

[0023] The coal dust in the raw coal silo tank 1 will flow with the air through the arc-shaped dust outlet 2 into the connecting pipe 8, and finally enter the processing box 7. The air containing coal dust will pass through the filter cotton pad 11. The filter cotton pad 11 can filter out the coal dust in the air, thereby reducing the coal dust diffused in the air of the raw coal silo tank 1. As the filter cotton pad 11 filters, the coal dust will accumulate in the filter cotton pad 11, so that the filter cotton pad 11 needs to be replaced and cleaned regularly. Let the worker remove the filter cotton pad 11 with the fixing bolts, take the filter cotton pad 11 out of the installation port 9, replace or clean the filter cotton pad 11 and then reinstall it in the installation port 9.

[0024] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust removal device for a raw coal silo, comprising a plurality of raw coal silo tanks (1) arranged in parallel, and an arc-shaped dust outlet (2) and a plurality of air inlets (3) provided on the outer side wall of the raw coal silo tanks (1), characterized in that: A plurality of inclined air inlet protection cylinders (4) in communication with the air inlet (3) are fixedly connected to the outer wall of the raw coal silo tank (1); a sealing box (6) in communication with the arc-shaped dust outlet (2) is fixedly connected to the outer wall of the raw coal silo tank (1); a processing box (7) is fixedly connected to the outer wall of one of the raw coal silo tanks (1); the processing box (7) is located below the arc-shaped dust outlet (2); the processing box (7) and the plurality of sealing boxes (6) are connected and communicated with each other through a connecting pipe (8); a mounting opening (9) and an air extraction hole (10) are respectively provided on the outer wall and bottom of the processing box (7); a filter cotton pad (11) is slidably connected to the inner wall of the mounting opening (9); the filter cotton pad (11) and the mounting opening (9) are connected by a plurality of fixing bolts; an air extractor (12) is fixedly connected to the bottom of the processing box (7); the air inlet of the air extractor (12) is in communication with the air extraction hole (10).

2. The dust removal device for raw coal silo according to claim 1, characterized in that: The distance between two adjacent air inlets (3) located on the same raw coal silo tank (1) is the same.

3. The dust removal device for raw coal silo according to claim 1, characterized in that: The inner wall of the processing box (7) is provided with a slot communicating with the installation opening (9), and the outer wall of the filter cotton pad (11) is slidably connected to the inner wall of the slot.

4. The dust removal device for raw coal silo according to claim 1, characterized in that: The inner side walls of the arc-shaped dust outlet (2) and the air inlet (3) are both fixedly connected with an anti-falling net (5).

5. The dust removal device for raw coal silo according to claim 1, characterized in that: The top of the processing box (7) is provided with a plurality of through holes, and the bottom end of the connecting pipe (8) is connected to the through holes.

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