Dust collecting and processing device of dynamic pulverized coal concentrator

Abstract

The utility model discloses a dust collection and treatment device of a dynamic pulverized coal concentrator, which relates to the technical field of dust collection, and comprises a dynamic pulverized coal concentrator, a bag type dust collector and a belt conveyor, an installation cover is installed above the belt conveyor, the top end in the installation cover is fixedly connected with a dust collection cover, and the dust collection cover is fixedly connected with the bag type dust collector. A plurality of openings are formed in one side of the dust collecting cover, a fixing frame is fixedly connected to the interior of the dust collecting cover, a dust filtering net is fixedly connected to the interior of the fixing frame, a negative pressure fan is fixedly connected to the top of the mounting cover, an air pipe is fixedly connected between the negative pressure fan and the dust collecting cover, and a discharging opening is formed in the bottom of the dust collecting cover; flying dust is sucked into the dust collecting cover through the negative pressure fan and filtered by the dust filtering net, the cam can impact and shake the dust filtering net to shake off the dust when rotating, the dust can fall onto the belt conveyor through the discharging port to be conveyed away after the sealing plate is moved away, the problem of dust dissipation and waste caused by flying dust can be avoided, and the working environment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collection, in particular to a dust collection and treatment device of a coal powder dynamic powder selector. Background Art

[0002] The powder selector is an industrial equipment used in various industries. It is the core equipment of the powder making system. It is used in conjunction with the grinding equipment to timely select qualified fine powder ground to a certain particle size, and return the coarse powder to the grinding equipment for further grinding, thereby reducing the over-grinding phenomenon and improving the grinding efficiency of the grinding equipment. In many industries, a large amount of coal powder is needed as fuel. The fineness of coal powder greatly affects the combustion efficiency and product quality, so a powder selector is needed.

[0003] In the prior art, the fine powder selected by the powder selector will follow the airflow into the dust collector for dust collection and treatment, and then the dust collected by the dust collector will be transported away through the conveyor belt. When the dust collector discharges the collected dust onto the conveyor belt, dust is easily generated due to the height difference. If not handled in time, it will not only cause dust to escape and waste, but also cause pollution to the working environment.

[0004] In order to solve the above problems, the present application proposes a dust collection and treatment device for a coal powder dynamic classifier. Utility Model Content

[0005] The utility model provides a dust collecting and processing device for a coal powder dynamic powder selector to solve the above technical problems.

[0006] In order to solve the above technical problems, the utility model provides a dust collection and treatment device for a coal powder dynamic classifier, including a coal powder dynamic classifier, a bag dust collector and a belt conveyor, wherein a pipeline is fixedly connected between the air outlet of the coal powder dynamic classifier and the air inlet of the bag dust collector through a flange, the belt conveyor is located below the bag dust collector, and a mounting cover is installed above the belt conveyor. The bottom of the bag dust collector passes through the mounting cover and extends to the inside of the mounting cover, and a dust collecting cover is fixedly connected to the top of the mounting cover, and a plurality of openings are opened on one side of the dust collecting cover, a fixed frame is fixedly connected to the inside of the dust collecting cover, and a dust filter is fixedly connected to the inside of the fixed frame. A motor is fixedly connected to the top of the dynamic powder classifier, and a cam is fixedly connected to the motor output shaft, and the cam is located on the side of the dust filter away from the opening. A negative pressure fan is fixedly connected to the top of the mounting cover, and an air duct is fixedly connected between the negative pressure fan and the dust collecting cover. A slide groove is provided at the bottom of the dust collecting cover, and a sealing plate is slidably connected to the bottom of the dust collecting cover through the slide groove. A feeding port is provided at the bottom of the dust collecting cover, and the feeding port is located on a side of the fixed frame close to the opening, and the feeding port is located above the sealing plate, and a connecting plate is fixedly connected to the bottom of the sealing plate. An electric push rod is installed under the dust collecting cover, and both ends of the electric push rod are respectively fixedly connected to one side of the connecting plate and an inner wall of the mounting cover.

[0007] Preferably, a circular hole is opened on the top of the mounting cover, the bottom of the bag dust collector passes through the circular hole, a rubber ring is fixedly connected to the inner wall of the circular hole, and the inner wall of the rubber ring is in contact with the outer wall of the bag dust collector.

[0008] Preferably, the motor is located inside the dust collecting hood, and the motor is located on a side of the fixing frame away from the feeding opening.

[0009] Preferably, two supporting legs are respectively fixedly connected to the front and rear sides of the bottom of the mounting cover by bolts, and the plurality of supporting legs are respectively located at the front and rear sides of the belt conveyor.

[0010] Preferably, two ends of the air duct are respectively fixedly connected to the air inlet of the negative pressure fan and the side of the dust collecting hood away from the opening, and the air duct is communicated with the inside of the dust collecting hood.

[0011] Compared with the related art, the dust collection and treatment device of the coal powder dynamic classifier provided by the utility model has the following beneficial effects:

[0012] The coal powder is collected and processed through a coal powder dynamic classifier, a bag dust collector and a belt conveyor. The dust raised during this period can be sucked into the dust hood by a negative pressure fan and filtered by a dust filter. Then the motor drives the cam to impact and shake the dust filter to shake off the dust to prevent the dust filter from being blocked by dust. The electric push rod pulls the sealing plate to return the filtered and shaken dust to the belt conveyor through the discharge port for transportation. This can not only avoid the problem of dust escape and waste caused by dust, but also protect the working environment. It is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an overall front view of a dust collection and treatment device of a coal powder dynamic classifier proposed by the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of a dust collection and treatment device of a coal powder dynamic classifier proposed by the utility model;

[0015] Figure 3 This is a front cross-sectional view of the interior of a mounting cover of a dust collection and treatment device of a coal powder dynamic classifier proposed by the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the installation cover of the dust collection and treatment device of the coal powder dynamic classifier proposed by the utility model;

[0017] Figure 5 A schematic diagram of the internal structure of a dust collecting hood of a dust collecting and processing device of a coal powder dynamic classifier proposed by the utility model;

[0018] Figure 6 A schematic diagram of the bottom structure of a dust collecting hood of a dust collecting and processing device of a coal powder dynamic classifier proposed by the utility model;

[0019] Figure 7 The utility model provides a schematic diagram of the structure of a dust collecting hood of a dust collecting and processing device of a coal powder dynamic classifier.

[0020] Numbers in the figure: 1. Coal powder dynamic classifier, 2. Bag dust collector, 3. Pipeline, 4. Belt conveyor, 5. Mounting cover, 6. Support leg, 7. Round hole, 8. Rubber ring, 9. Dust collecting hood, 10. Opening, 11. Negative pressure fan, 12. Air duct, 13. Fixed frame, 14. Dust filter, 15. Motor, 16. Cam, 17. Feeding port, 18. Slide, 19. Sealing plate, 20. Connecting plate, 21. Electric push rod. DETAILED DESCRIPTION

[0021] Example, by Figure 1-7The utility model includes a coal powder dynamic classifier 1, a bag dust collector 2 and a belt conveyor 4. A pipe 3 is fixedly connected between the air outlet of the coal powder dynamic classifier 1 and the air inlet of the bag dust collector 2 through a flange. The belt conveyor 4 is located below the bag dust collector 2. A mounting cover 5 is installed above the belt conveyor 4. The bottom of the bag dust collector 2 passes through the mounting cover 5 and extends to the inside of the mounting cover 5. A dust collecting cover 9 is fixedly connected to the top of the inside of the mounting cover 5. A plurality of openings 10 are opened on one side of the dust collecting cover 9. The dust collecting hood 9 is fixedly connected with a fixing frame 13, and a dust filter 14 is fixedly connected with the fixing frame 13. A motor 15 is fixedly connected with the top of the internal part of the dynamic coal powder classifier 1, and a cam 16 is fixedly connected with the output shaft of the motor 15. The cam 16 is located on the side of the dust filter 14 away from the opening 10. A negative pressure fan 11 is fixedly connected with the top of the mounting cover 5, and an air duct 12 is fixedly connected between the negative pressure fan 11 and the dust collecting hood 9. A slide groove 18 is provided at the bottom of the dust collecting hood 9. A sealing plate 19 is slidably connected through a slide groove 18, a feed opening 17 is provided at the bottom of the dust hood 9, the feed opening 17 is located on the side of the fixed frame 13 close to the opening 10, and the feed opening 17 is located above the sealing plate 19, a connecting plate 20 is fixedly connected to the bottom of the sealing plate 19, an electric push rod 21 is installed under the dust hood 9, and the two ends of the electric push rod 21 are respectively fixedly connected to one side of the connecting plate 20 and an inner side wall of the mounting cover 5, and the sealing plate 19 can block the feed opening 17 when it moves to the bottom of the feed opening 17, which can avoid The discharge port 17 leaks and affects the dust suction function at the opening 10. When the filtered dust falls onto the belt conveyor 4 through the discharge port 17, although there may be some slight dust problems, compared with the dust problems generated when falling from the bag dust collector 2, the slight dust can be ignored, and even if there is slight dust, it can be re-sucked into the dust collecting hood 9 and re-processed according to the same steps. The dust filter 14 can specifically adopt some high-density filter nets, or filter cloths and other materials that can filter out fine powder.

[0022] A circular hole 7 is provided on the top of the mounting cover 5, and the bottom of the bag dust collector 2 passes through the circular hole 7. A rubber ring 8 is fixedly connected to the inner wall of the circular hole 7. The inner wall of the rubber ring 8 is in contact with the outer wall of the bag dust collector 2. The circular hole 7 facilitates the dust outlet at the bottom of the bag dust collector 2 to extend into the interior of the mounting cover 5, and the rubber ring 8 can improve the sealing between the outer wall of the bag dust collector 2 and the inner wall of the circular hole 7 to prevent dust from escaping from the gap when it is raised.

[0023] The motor 15 is located inside the dust collecting hood 9, and the motor 15 is located on the side of the fixed frame 13 away from the discharge port 17. The motor 15 can drive the cam 16 to rotate, and the cam 16 hits the dust filter 14 to make it shake, thereby shaking off the dust attached to the surface of the filter, avoiding the dust filter 14 from being blocked and affecting the negative pressure filtering effect.

[0024] The front and rear sides of the bottom of the installation cover 5 are respectively fixedly connected with two support legs 6 by bolts. The multiple support legs 6 are respectively located at the front and rear sides of the belt conveyor 4, and the support legs 6 play a role of supporting and fixing the installation cover 5.

[0025] The two ends of the air duct 12 are respectively fixedly connected to the air inlet of the negative pressure fan 11 and the side of the dust collecting hood 9 away from the opening 10, and the air duct 12 is connected to the inside of the dust collecting hood 9. The air duct 12 is located on the side of the dust filter 14 away from the opening 10. Therefore, the air flow direction is to pass through the opening 10, the dust filter 14, and the air duct 12 in sequence, and finally be discharged through the negative pressure fan 11, but the dust in the air flow will be filtered out by the dust filter 14.

[0026] Working principle:

[0027] The material is screened by the coal powder dynamic classifier 1, and the fine powder is screened out and enters the bag dust collector 2 with the air flow through the pipe 3, and then the dust is collected by the bag dust collector 2. The dust collected by the bag dust collector 2 is finally discharged to the belt conveyor 4 for transportation. When the dust collected in the bag dust collector 2 is discharged through the outlet below it and falls on the belt conveyor 4, it is inevitable that some dust will be raised. During this period, the negative pressure fan 11 and the motor 15 are started. After the negative pressure fan 11 is started, the inside of the dust collecting hood 9 is sucked into a negative pressure through the air duct 12. At this time, the dust raised in the air inside the installation hood 5 can be sucked into the inside of the dust collecting hood 9 through the opening 10 with the air flow. After the air flow enters the inside of the dust collecting hood 9, it will be filtered by the dust filter 14 so that the air in the air The dust is filtered and attached to the dust filter 14. During this period, the output shaft of the motor 15 continuously drives the cam 16 to rotate. The long axis end of the cam 16 will continuously hit the dust filter 14, thereby shaking off the dust attached to the dust filter 14. After running for a period of time according to the above steps, a part of the dust hood 9 located on one side of the fixed frame 13 will accumulate a part of the powder. At this time, the electric push rod 21 can be started. The electric push rod 21 pulls the sealing plate 19 to slide on the bottom of the dust hood 9 through the connecting plate 20 until the sealing plate 19 no longer blocks the discharge port 17, so that the dust collected in the dust hood 9 can fall downward through the discharge port 17 and be transported away on the belt conveyor 4. Then the electric push rod 21 pushes the sealing plate 19 in the opposite direction to block the discharge port 17 again and continue to run.

Claims

1. A dust collection and treatment device for a pulverized coal dynamic classifier, comprising a pulverized coal dynamic classifier (1), a bag dust collector (2) and a belt conveyor (4), wherein a pipe (3) is fixedly connected between an air outlet of the pulverized coal dynamic classifier (1) and an air inlet of the bag dust collector (2) via a flange, and the belt conveyor (4) is located below the bag dust collector (2), and is characterized in that: A mounting cover (5) is installed above the belt conveyor (4); the bottom of the bag dust collector (2) passes through the mounting cover (5) and extends into the interior of the mounting cover (5); a dust collecting cover (9) is fixedly connected to the top of the interior of the mounting cover (5); a plurality of openings (10) are provided on one side of the dust collecting cover (9); a fixing frame (13) is fixedly connected to the interior of the dust collecting cover (9); a dust filter (14) is fixedly connected to the interior of the fixing frame (13); a motor (15) is fixedly connected to the top of the interior of the pulverized coal dynamic classifier (1); a cam (16) is fixedly connected to the output shaft of the motor (15); the cam (16) is located on a side of the dust filter (14) away from the opening (10); a negative pressure pump (16) is fixedly connected to the top of the mounting cover (5); A fan (11), an air duct (12) is fixedly connected between the negative pressure fan (11) and the dust collecting hood (9), a slide groove (18) is provided at the bottom of the dust collecting hood (9), a sealing plate (19) is slidably connected to the bottom of the dust collecting hood (9) through the slide groove (18), a feed opening (17) is provided at the bottom of the dust collecting hood (9), the feed opening (17) is located on a side of the fixed frame (13) close to the opening (10), and the feed opening (17) is located above the sealing plate (19), a connecting plate (20) is fixedly connected to the bottom of the sealing plate (19), an electric push rod (21) is installed below the dust collecting hood (9), and two ends of the electric push rod (21) are respectively fixedly connected to one side of the connecting plate (20) and an inner side wall of the mounting hood (5).

2. The dust collection and treatment device of a coal powder dynamic classifier according to claim 1 is characterized in that: A circular hole (7) is provided on the top of the mounting cover (5), and the bottom of the bag dust collector (2) passes through the circular hole (7). A rubber ring (8) is fixedly connected to the inner wall of the circular hole (7), and the inner wall of the rubber ring (8) is in contact with the outer wall of the bag dust collector (2).

3. The dust collection and treatment device of a coal powder dynamic classifier according to claim 1 is characterized in that: The motor (15) is located inside the dust collecting cover (9), and the motor (15) is located on a side of the fixing frame (13) away from the discharge port (17).

4. The dust collection and treatment device of a coal powder dynamic classifier according to claim 1, characterized in that: Two supporting legs (6) are respectively fixedly connected to the front and rear sides of the bottom of the installation cover (5) by bolts, and the plurality of supporting legs (6) are respectively located on the front and rear sides of the belt conveyor (4).

5. The dust collection and treatment device of a coal powder dynamic classifier according to claim 1, characterized in that: The two ends of the air duct (12) are respectively fixedly connected to the air inlet of the negative pressure fan (11) and the side of the dust collecting hood (9) away from the opening (10), and the air duct (12) and the inside of the dust collecting hood (9) are connected.

Images