Dust removal device of coke oven coal preparation crusher

Abstract

The utility model relates to the technical field of dust removal equipment in a coke oven coal preparation process, and mainly discloses a dust removal device of a coke oven coal preparation crusher, which comprises a crusher, a chute, a dust collection cover, a dust collection header pipe and a bag type dust remover, the dust collection cover is arranged on the side part of an opening below the chute, a settling chamber is arranged on the side surface of the chute, and the settling chamber is communicated with the inside of the chute; a dust collection cover is installed on the settling chamber, a baffle plate is arranged in the settling chamber, the dust collection cover and the dust collection cover are communicated with a dust collection header pipe through pipelines, and the dust collection header pipe is connected with a bag type dust collector. And meanwhile, the dust-free effect can be achieved with small dust removal air volume, and the equipment investment and the operation cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment in a coke oven coal preparation process, in particular to a dust removal device for a coke oven coal preparation crusher. Background Art

[0002] Coal preparation refers to the process of preparing various raw coals into coal for charging the furnace. It is an important part of coking chemical production. Conventional coal preparation processes usually include raw coal acceptance, raw coal storage, coal blending and coking coal crushing. In the coking coal crushing process, a coal crusher is usually used. The crusher is set on the ground foundation, and a conveyor belt is set under the crusher. Coal enters from the entrance above the crusher. The bulk material after crushing by the crusher is transported to the top of the conveyor belt through the chute under the crusher, and then transported to other places through the conveyor belt. In order to meet environmental protection requirements and prevent the dust generated by the chute from spilling and causing environmental pollution, a dust hood is usually set near the receiving point of the conveyor belt under the chute, and enters the cloth belt dust collector through the dust collecting main pipe for treatment; or a chute with a non-powered dust removal mechanism is used.

[0003] The prior art has the following technical problems: First, although the above method can effectively remove the dust generated during the chute discharge process, when the bulk material passes through the chute, due to the acceleration of gravity and the centrifugal force of the crushed material rotating in the chute, part of the material moves in a parabolic motion and splashes at high speed toward the impact plate of the chute. The material in the chute has a high dust emission speed and a large amount of dust. Therefore, the dust generated during the chute discharge process of the crusher requires a large air volume and a high pressure head, resulting in a large dust collector area and high energy consumption. Secondly, the chute with an unpowered dust removal mechanism has a complex structure and requires a high installation height. The ordinary floor height during the material transfer process cannot meet the installation height requirements, and if the mechanical dust removal system is not matched, the coal crusher will still have dust and does not meet the regulatory requirements. Utility Model Content

[0004] The purpose of the utility model is to provide a dust removal device for a coke oven coal preparation crusher to solve the technical problems existing in the prior art. By arranging a sedimentation chamber at a conventional material guide chute, the force of high-speed materials generated by the rotation of the crusher is unloaded, the materials can be settled, and the amount of dust can be reduced; at the same time, a dust-free effect can be achieved with a small dust removal air volume, thereby reducing equipment investment and operating costs.

[0005] To achieve the above purpose, the technical solution of the utility model is to provide a dust removal device for a coke oven coal crusher, including a crusher, a chute, a dust collecting hood, a dust collecting main pipe and a bag dust collector. The crusher is arranged above a ground foundation, and the lower part of the material outlet of the crusher is connected to the upper opening of the chute. A conveyor belt is arranged below the opening of the chute, and the conveyor belt transports the crushed material to another place. A dust collecting hood is arranged above the conveyor belt on the side of the lower opening of the chute, and a settling chamber is arranged on the side of the chute, and the settling chamber is provided with a settling chamber inlet and a settling chamber outlet. The inlet of the settling chamber is connected with the inside of the chute, a dust hood is installed on the settling chamber, the dust hood is provided with a dust inlet and a dust outlet, the dust inlet is connected with the outlet of the settling chamber, a baffle is arranged between the inlet of the settling chamber and the outlet of the settling chamber, the dust hood is connected with the dust collecting main pipe through a pipeline, the dust outlet of the dust hood is connected with the dust collecting main pipe through a pipeline, the dust collecting main pipe is connected with a bag dust collector, the dust in the dust collecting main pipe enters the subsequent bag dust collector, and after being processed by the bag dust collector, it is discharged into the air through the dust collecting induced draft fan and the exhaust pipe.

[0006] Through the above technical scheme, a sedimentation chamber is set on the side of the chute, and the sedimentation chamber is closed on all sides. When the crushed material is transported to the conveyor belt through the chute, part of the crushed material enters the sedimentation chamber, and the discharge pressure at the chute outlet is relieved, thereby reducing the amount of dust and gas. At the same time, the high-speed moving material in the sedimentation chamber is passed through the baffle to make large particles of dust settle, and the small particles of dust in the sedimentation chamber are directly transported to the bag dust collector by the dust hood. Through the above two effects, the material can be effectively settled and the amount of dust can be reduced. Therefore, the dust removal air volume can be reduced, the dust concentration at the inlet of the bag dust collector can be reduced, and the pressure required to capture the dust gas is reduced.

[0007] A further solution of the utility model is that the inlet of the settling chamber is connected to the side of the chute by welding.

[0008] A further solution of the utility model is that the sedimentation chamber is arranged on the chute at one side of the forward direction of the conveyor belt.

[0009] A further solution of the utility model is that the dust hood is connected to the outlet of the sedimentation chamber by welding, and the outlet of the sedimentation chamber is located above the sedimentation chamber.

[0010] A further solution of the utility model is that the height of the sedimentation chamber is smaller than the height of the chute, and the height of the dust hood is smaller than the height of the sedimentation chamber.

[0011] A further solution of the utility model is that the baffle is a rectangular plate, the upper part of the baffle is welded to the upper inner part of the sedimentation chamber, and the baffle is arranged along the width direction of the sedimentation chamber.

[0012] A further solution of the utility model is that a valve is provided on the pipeline between the dust collecting hood and the dust collecting main pipe, and a valve is provided on the pipeline between the dust collecting hood and the dust collecting main pipe, and the opening and closing of the pipeline are controlled by the valve.

[0013] A further solution of the utility model is that the chute is a wedge-shaped box body formed by welding four side panels and having openings at the top and bottom, wherein two side panels are trapezoidal and the other two side panels are rectangular, the two trapezoidal side panels are placed vertically and parallel, the lower bases of the two trapezoidal side panels are located at the top, the two sides of a rectangular side panel are welded to the two waists of the two trapezoidal side panels, and the upper opening of the chute is larger than the lower opening of the chute; the sedimentation chamber is a square box body formed by welding five side panels, the sedimentation chamber entrance is an opening of the box body, and at a corner end on the upper side of the box body, the side panel openings on two adjacent sides form a sedimentation chamber outlet, and the dust hood is installed here.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model provides a settling chamber and a dust hood on the side of the chute, thereby removing the pressure of the crusher discharge, allowing the material to settle effectively and reducing the amount of dust generated. The dust in the settling chamber and near the conveyor belt drop point is transported to the bag dust collector through the dust collection main pipe for treatment through the dust collection hood and the dust collection hood. Furthermore, the area of ​​the bag dust collector can be reduced, the fan number becomes smaller, the equipment investment is reduced, the motor power is reduced, the equipment maintenance and repair costs are reduced, and the operating costs are reduced; the dust concentration at the dust collector inlet is reduced, the load of the ash conveying equipment is reduced, and the energy consumption is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the plan layout of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the dust hood of the utility model.

[0020] In the figure: 1. crusher, 2. chute, 3. settling chamber, 4. dust hood, 5. baffle, 6. dust collection main pipe, 7. ground foundation, 8. conveyor belt, 9. dust collection hood, 10. dust outlet, 11. dust inlet, 12. valve, 13. settling chamber inlet, 14. settling chamber outlet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] like Figure 1-3 As shown, a dust removal device for a coke oven coal crusher includes a crusher 1, a chute 2, a dust hood 9, a dust collecting main pipe 6 and a bag dust collector. The crusher 1 is arranged above a ground foundation 7, and the lower part of the material outlet of the crusher 1 is connected to the upper opening of the chute 2. A conveyor belt 8 is arranged below the opening of the chute 2, and the conveyor belt 8 transports the crushed material to other places. A dust hood 9 is arranged above the conveyor belt 8 on the side of the lower opening of the chute 2.

[0024] A settling chamber 3 is provided on the side of the chute 2, and the settling chamber 3 is provided with a settling chamber inlet 13 and a settling chamber outlet 14. The settling chamber inlet 13 is connected with the inside of the chute 2, and a dust hood 4 is installed on the settling chamber 3. The dust hood 4 is provided with a dust inlet 11 and a dust outlet 10. The dust inlet 11 is sealed and connected with the settling chamber outlet 14. A baffle 5 is provided between the settling chamber inlet 13 and the settling chamber outlet 14. The dust hood 9 and the dust outlet are connected with the dust collecting main pipe 6 through a pipeline. The dust collecting main pipe 6 is connected with a bag dust collector. The dust in the dust collecting main pipe 6 enters the subsequent bag dust collector. After being processed by the bag dust collector, it is discharged into the air through the dust collecting fan and the exhaust pipe.

[0025] Specifically, the inlet 13 of the settling chamber is connected to the side of the chute 2 by welding. The settling chamber 3 is arranged on the chute 2 on the side of the forward direction of the conveyor belt 8. The dust hood 4 is connected to the outlet 14 of the settling chamber by welding, and the outlet 14 of the settling chamber is located above the settling chamber 3. The height of the settling chamber 3 is less than the height of the chute 2, and the height of the dust hood 4 is less than the height of the settling chamber 3. The baffle 5 is a rectangular plate, and the upper part of the baffle 5 is welded to the upper interior of the settling chamber 3, and the baffle 5 is arranged along the width direction of the settling chamber 3.

[0026] A further solution of the utility model is that a valve is provided on the pipeline between the dust collecting hood 9 and the dust collecting main pipe 6, and a valve is provided on the pipeline between the dust collecting hood 4 and the dust collecting main pipe 6, and the opening and closing of the pipeline are controlled by the valve.

[0027] The specific structures of the chute 2 and the sedimentation chamber 3 are as follows: the chute 2 is a wedge-shaped box body formed by welding four side panels and having openings at the top and bottom, wherein two side panels are trapezoidal and the other two side panels are rectangular, the two trapezoidal side panels are placed vertically and parallel, the lower bases of the two trapezoidal side panels are located at the top, the two sides of a rectangular side panel are welded to the two waists of the two trapezoidal side panels, and the upper opening of the chute 2 is larger than the lower opening of the chute 2; the sedimentation chamber 3 is a square closed box body formed by welding five side panels, the sedimentation chamber entrance is an opening of the box body, and at a corner end on the upper side of the box body, the side panel openings on two adjacent sides form a sedimentation chamber outlet, and the dust hood 4 is installed here.

[0028] Example 2

[0029] This embodiment is based on the embodiment 1, and a further technical solution compared with the embodiment 1 is that, in the process of preparing coal for the coke oven, a plurality of crushers 1 are often arranged in the length direction of a conveyor belt 8, which are treated by a bag dust collector. Assuming there are three crushers 1, four dust hoods 9 can be used, two of which are respectively located on the outside of the crushers 1 at both ends, and the other two dust hoods 9 are in the gap between the crushers 1. The three dust hoods 4 are connected to a dust collecting main pipe 6 through a pipeline, and the four dust hoods 9 are all connected to the dust collecting main pipe 6 to form a dust removal system for the crusher room.

[0030] How it works:

[0031] Through the above technical scheme, a sedimentation chamber 3 is arranged on the side of the chute 2, and the sedimentation chamber 3 is closed on all sides. When the crushed material is transported to the conveyor belt 8 through the chute 2, part of the crushed material enters the sedimentation chamber 3, and the discharge pressure at the outlet of the chute 2 is relieved, and the amount of dust and gas is reduced; at the same time, the high-speed moving material in the sedimentation chamber 3 is passed through the baffle 5 to make the large particles of dust settle, and the small particles of dust in the sedimentation chamber 3 are directly transported to the bag dust collector by the dust hood 4. Through the above two effects, the material can be effectively settled and the dust amount can be reduced, so the dust removal air volume can be reduced, the dust concentration at the inlet of the bag dust collector can be reduced, and the pressure required to capture the dust gas is reduced.

[0032] Through the above scheme, the utility model can reduce the area of ​​the bag dust collector, make the fan number smaller, reduce equipment investment, reduce motor power, reduce equipment maintenance and repair costs, and reduce operating costs; the dust concentration at the dust collector inlet is reduced, the load on the ash conveying equipment is reduced, and the energy consumption is reduced.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A dust removal device for a coke oven coal crusher, characterized in that: The invention comprises a crusher (1), a chute (2), a dust collecting hood (9), a dust collecting main pipe (6) and a bag dust collector. The crusher (1) is arranged above a ground foundation (7). A conveyor belt (8) is arranged below the opening of the chute (2). A dust collecting hood (9) is arranged above the conveyor belt (8) on the side of the opening below the chute (2). A settling chamber (3) is arranged on the side of the chute (2). The settling chamber (3) is provided with a settling chamber inlet (13) and a settling chamber outlet (14). The inlet (13) is connected to the interior of the chute (2); the dust hood (4) is provided with a dust inlet (11) and a dust outlet (10); the dust inlet (11) is connected to the settling chamber outlet (14); a baffle (5) is provided between the settling chamber inlet (13) and the settling chamber outlet (14); the dust hood (9) is connected to the dust collecting main pipe (6) through a pipeline; the dust outlet (10) of the dust hood (4) is connected to the dust collecting main pipe (6) through a pipeline; and the dust collecting main pipe (6) is connected to a bag dust collector.

2. A dust removal device for a coke oven coal preparation crusher according to claim 1, characterized in that: The sedimentation chamber inlet (13) is connected to the side of the chute (2) by welding.

3. A dust removal device for a coke oven coal preparation crusher according to claim 2, characterized in that: The sedimentation chamber (3) is arranged on the chute (2) at one side of the forward direction of the conveyor belt (8).

4. A dust removal device for a coke oven coal crusher according to claim 3, characterized in that: The dust hood (4) is connected to the sedimentation chamber (3) by welding.

5. A dust removal device for a coke oven coal crusher according to claim 4, characterized in that: The height of the sedimentation chamber (3) is smaller than the height of the chute (2), and the height of the dust hood (4) is smaller than the height of the sedimentation chamber (3).

6. A dust removal device for a coke oven coal preparation crusher according to claim 5, characterized in that: A valve is provided on the pipeline between the dust collecting hood (9) and the dust collecting main pipe (6), and a valve is provided on the pipeline between the dust collecting hood (4) and the dust collecting main pipe (6).

7. A dust removal device for a coke oven coal preparation crusher according to any one of claims 1 to 6, characterized in that: The chute (2) is a wedge-shaped box, and the upper opening of the chute (2) is larger than the lower opening of the chute (2).

8. A dust removal device for a coke oven coal preparation crusher according to any one of claims 1 to 6, characterized in that: The sedimentation chamber (3) is a square box, the sedimentation chamber inlet (13) is arranged on the side of the sedimentation chamber (3), and the sedimentation chamber outlet (14) is arranged at the corner end of the upper side of the sedimentation chamber (3).

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