A high-efficiency dust removal device for a tension roller

Abstract

The utility model discloses a kind of efficient dust removal devices of tension roller, including tension roller equipment, main air pipe, fan, discharge machine, dust hood is installed on tension roller equipment, dust hood opening width matches tension roller surface, opening width=tension roller width+20mm, dust hood bottom edge is 12±2mm from tension roller surface, main air pipe is connected with each dust hood by several branch pipes, main air pipe is connected with pulse cloth bag dust collector by transfer pipe, pulse cloth bag dust collector is installed with several filter bags, fan and the air outlet of pulse cloth bag dust collector are communicated, discharge machine is connected with the discharge port of pulse cloth bag dust collector;Through the accurate matching of dust hood and tension roller, dust hood covers the iron powder falling point of each tension roller, reduce the accumulation of iron powder at tension roller gap from source, without manual intervention to clean operation, production safety, can avoid residual iron powder to cause tension roller and steel band friction coefficient anomaly, prolong the service life of tension roller.

Description

Technical Field

[0001] This utility model relates to the field of tension roller dust removal technology, specifically a high-efficiency tension roller dust removal device. Background Technology

[0002] In stainless steel strip production lines, tension rollers are used to maintain strip tension between the annealing furnace outlet and the descaling machine section. Because a large amount of iron oxide powder is generated on the strip surface, this powder needs to be removed; otherwise, residual iron powder will cause abnormal friction coefficients between the tension rollers and the steel strip, accelerating roller surface wear.

[0003] In most related technologies, a negative pressure dust collection hood is installed on the tension roller. The negative pressure dust collection hood is combined with a centralized pulse bag dust collector to achieve efficient collection of iron oxide powder at the source. However, such a centralized dust collection hood is difficult to accurately cover the powder drop point of each tension roller. Iron oxide powder continues to accumulate in the gap between the tension rollers, requiring manual cleaning of the iron oxide powder. The cleaning efficiency is low and there are safety hazards in the high-temperature environment. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency dust removal device for tension rollers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency dust removal device for tension rollers, including a tension roller device, wherein a dust suction hood is installed on the tension roller device, the opening width of the dust suction hood matches the tension roller surface, the opening width = tension roller width + 20mm, and the bottom edge of the dust suction hood is 12±2mm from the tension roller surface, ensuring full coverage of the iron powder falling trajectory, more comprehensive collection of iron powder, prevention of omission problems, and reduction of manual cleaning requirements; The main air duct is connected to each dust collection hood through several branch pipes. The main air duct is connected to a pulse bag dust collector through a transfer pipe. The pulse bag dust collector is equipped with several filter bags, which are removable and easy to replace, keeping the airflow inside the pulse bag dust collector smooth and ensuring sufficient suction force for iron powder. The fan is connected to the air outlet of the pulse bag dust collector. The fan extracts iron powder from the tension roller device through the dust suction hood. The iron powder and air enter the pulse bag dust collector to collect the iron powder. The discharge machine is connected to the discharge port of the pulse bag filter. The discharge machine discharges the iron powder collected by the pulse bag filter, which can be reused and reduce resource waste.

[0006] Furthermore, the fan is connected to the pulse bag filter via an exhaust pipe, and the fan outlet is connected to a chimney to exhaust air, thus preventing high-speed airflow from affecting the airflow in the production workshop.

[0007] Furthermore, the dust collection hood is equipped with a photoelectric sensor and a pulse jet nozzle. When the photoelectric sensor detects that the iron powder accumulation height is greater than 2 mm, it triggers local pulse jet blowing to reduce the wear of the tension roller caused by iron powder accumulation.

[0008] Furthermore, the discharge machine is connected to a powder conveying pipe, and the lower end of the powder conveying pipe is connected to an ash storage hopper via a valve plate, which facilitates the subsequent unified processing of iron powder. The valve plate can be closed when maintaining the ash storage hopper.

[0009] Furthermore, the lower end of the ash storage hopper is connected to a pneumatic conveying pipe, which is connected to a blowing pipe to achieve closed-loop conveying, reduce iron powder dust pollution, and achieve high conveying efficiency.

[0010] Furthermore, a pneumatic unblocking pipe is installed on the surface of the ash hopper. The pneumatic unblocking pipe is inserted obliquely into the ash hopper and uses high-pressure airflow to loosen the clumps or accumulated iron powder in the ash hopper, preventing the iron powder from clogging the ash hopper.

[0011] Furthermore, a cylindrical filter is installed on the upper surface of the ash storage hopper to maintain the air pressure balance inside the ash storage hopper and ensure the stability of iron powder transportation and temporary storage.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) By precisely matching the dust hood with the tension roller, the dust hood covers the iron powder landing point of each tension roller, reducing the accumulation of iron powder in the tension roller gap from the source. No manual intervention is required for cleaning, ensuring production safety and preventing residual iron powder from causing abnormal friction coefficient between the tension roller and the steel belt, thus extending the service life of the tension roller.

[0013] (2) The height of iron powder accumulation is detected by photoelectric sensor. When the iron powder accumulates to a certain height, the iron powder is dispersed by pulse jet nozzle, which can prevent excessive iron powder residue and realize the automatic cleaning of iron powder.

[0014] (3) The iron powder collected by the pulse bag dust collector is sent to the ash storage hopper through the discharge machine to realize the collection of iron powder. The iron powder is then sent to the designated location for recycling and reuse using the pneumatic conveying pipe. Attached Figure Description

[0015] Figure 1 This is a top view of the entire utility model; Figure 2 This is a schematic diagram showing the connection between the pulse bag dust collector and the fan of this utility model; Figure 3 This is a schematic diagram of the connection between the pulse bag dust collector and the filter bag of this utility model; Figure 4 This is a schematic diagram showing the connection between the ash storage hopper and the pulse bag dust collector of this utility model; Figure 5This is a schematic diagram of the ash storage hopper of this utility model.

[0016] In the diagram: 1. Tension roller device; 2. Dust hood; 3. Pulse bag filter; 4. Fan; 5. Chimney; 6. Exhaust duct; 7. Discharge machine; 8. Main duct; 9. Ash hopper; 10. Powder conveying pipe; 11. Transfer pipe; 12. Filter bag; 13. Pulse jet nozzle; 14. Pneumatic conveying pipe; 15. Blowing pipe; 16. Pneumatic unblocking pipe; 17. Cartridge filter; 18. Valve plate; 19. Photoelectric sensor. Detailed Implementation

[0017] 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.

[0018] Example: Please see Figure 1-5 This utility model provides a technical solution: a high-efficiency dust removal device for tension rollers, including a tension roller device 1, on which a dust suction hood 2 is installed. The dust suction hood 2 is made of 304 stainless steel, which has a long service life. The opening width of the dust suction hood 2 matches the tension roller surface, with the opening width = tension roller width + 20mm. The bottom edge of the dust suction hood 2 is 12±2mm away from the tension roller surface. When iron powder falls, it can be completely collected, reducing iron powder residue and avoiding dust caused by manual cleaning of iron powder, resulting in a better workshop environment. The main air duct 8 is connected to each dust collection hood 2 via several branch pipes. The branch pipes are equipped with air volume regulating valves to ensure that the suction force of each tension roller is balanced. The main air duct 8 is connected to a pulse bag dust collector 3 via a transfer pipe 11. The pulse bag dust collector 3 is equipped with several filter bags 12. The filter bags 12 are made of PTFE-coated fiberglass material with a filtration accuracy of ≤5μm. The pulse bag dust collector 3 is cleaned with a pulse pressure of 0.5Mpa to ensure that the pulse bag dust collector 3 will not be blocked. Fan 4 is connected to the air outlet of pulse bag dust collector 3. Fan 4 extracts iron powder from tension roller device 1 through dust suction hood 2. The iron powder and air enter pulse bag dust collector 3 to collect the iron powder, which can be reused. Discharge machine 7 is connected to the discharge port of pulse bag dust collector 3. Discharge machine 7 discharges the iron powder collected by pulse bag dust collector 3. Discharge machine 7 uses spiral blades to transport iron powder.

[0019] In this embodiment, as Figure 2As shown, the fan 4 is connected to the pulse bag dust collector 3 by an exhaust pipe 6 to ensure the continuity of airflow. The outlet of the fan 4 is connected to a chimney 5, which can prevent the disorderly diffusion of air in the workshop.

[0020] In this embodiment, as Figure 2 As shown, the dust collection hood 2 is equipped with a photoelectric sensor 19 and a pulse jet nozzle 13. The photoelectric sensor 19 monitors the iron powder accumulation in real time, and the pulse jet nozzle 13 is connected to the air tank through a solenoid valve. When the iron powder accumulation height is greater than 2mm, the photoelectric sensor 19 provides a signal to open the solenoid valve, and the iron powder is blown away by the airflow and successfully drawn into the dust collection hood 2.

[0021] In this embodiment, as Figure 3 As shown, the discharge machine 7 is connected to a powder conveying pipe 10. The lower end of the powder conveying pipe 10 is connected to a dust storage hopper 9 via a valve plate 18. The valve plate 18 can control the iron powder flow rate, and the dust storage hopper 9 realizes the centralized storage of iron powder, providing a buffer space for subsequent processing or recycling.

[0022] In this embodiment, as Figure 5 As shown, the lower end of the ash storage hopper 9 is connected to a pneumatic conveying pipe 14, and the pneumatic conveying pipe 14 is connected to a blowing pipe 15. The pneumatic conveying method is adopted to avoid dust and blockage during the iron powder conveying process, and to achieve efficient and clean transfer of iron powder.

[0023] In this embodiment, as Figure 5 As shown, a pneumatic unblocking pipe 16 is installed on the surface of the ash hopper 9. The pneumatic unblocking pipe 16 is inserted obliquely into the interior of the ash hopper 9. In order to loosen the iron powder that may clump or accumulate in the ash hopper 9, a high-pressure airflow is used to ensure that the iron powder falls smoothly.

[0024] In this embodiment, as Figure 5 As shown, a cylindrical filter 17 is installed on the upper surface of the ash storage hopper 9 to maintain the internal air pressure balance of the ash storage hopper 9 and ensure the normal operation of pneumatic conveying and other processes.

[0025] Specifically, during use, a dust suction hood 2 is installed above each tension roller, which completely covers the trajectory of the falling iron powder. Each dust suction hood 2 is connected to the main air duct 8 through a branch pipe (Φ300mm). The branch pipe is equipped with an air volume regulating valve to ensure that the suction force of each roller is balanced. When the fan 4 is working, the dust hood 2 draws out the iron powder. The iron powder and air enter the pulse bag dust collector 3 through the branch pipe, main air pipe 8, and transfer pipe 11. The pulse bag dust collector 3 intercepts the iron powder, and the air enters the fan 4 through the exhaust pipe 6. Then the air is discharged through the chimney 5. Fan 4 is equipped with a frequency converter, which can adjust the power of fan 4 and dynamically adjust the parameters of fan 4 according to the production line speed: in high-speed mode, fan 4 runs at 100% power; in low-speed mode, it runs intermittently at 50% power (e.g., 10 minutes on / 2 minutes off); during low production at night, it switches to energy-saving mode to further reduce energy consumption and meet the needs of different working conditions. When the production line stops, the discharge machine 7 transports the iron powder that falls to the bottom of the pulse bag dust collector 3. The iron powder falls into the ash hopper 9 through the powder conveying pipe 10. The iron powder in the ash hopper 9 is transferred through the pneumatic conveying pipe 14. The pneumatic unblocking pipe 16 prevents the iron powder from clogging and causing dust. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency dust removal device using a tension roller, characterized in that, include: Tension roller device (1), on which a dust suction hood (2) is installed, the opening width of the dust suction hood (2) matches the tension roller surface, the opening width = tension roller width + 20mm, and the bottom edge of the dust suction hood (2) is 12±2mm from the tension roller surface; The main air duct (8) is connected to each dust hood (2) through several branch pipes. The main air duct (8) is connected to a pulse bag dust collector (3) through a transfer pipe (11). The pulse bag dust collector (3) is equipped with several filter bags (12). The fan (4) is connected to the air outlet of the pulse bag dust collector (3). The fan (4) extracts the iron powder from the tension roller device (1) through the dust suction hood (2). The iron powder and air enter the pulse bag dust collector (3) to collect the iron powder. Discharge machine (7) is connected to the outlet of pulse bag dust collector (3) and discharges the iron powder collected by pulse bag dust collector (3).

2. The high-efficiency dust removal device for tension rollers according to claim 1, characterized in that: The blower (4) is connected to the pulse bag dust collector (3) by an exhaust pipe (6), and the outlet of the blower (4) is connected to a chimney (5).

3. The high-efficiency dust removal device for tension rollers according to claim 1, characterized in that: The dust hood (2) is equipped with a photoelectric sensor (19) and a pulse jet nozzle (13).

4. The high-efficiency dust removal device for tension rollers according to claim 1, characterized in that: The discharge machine (7) is connected to a powder conveying pipe (10), and the lower end of the powder conveying pipe (10) is connected to an ash storage hopper (9) via a valve plate (18).

5. The high-efficiency dust removal device for tension rollers according to claim 4, characterized in that: The lower end of the ash storage hopper (9) is connected to a pneumatic conveying pipe (14), and the pneumatic conveying pipe (14) is connected to a blowing pipe (15).

6. The high-efficiency dust removal device for tension rollers according to claim 4, characterized in that: The surface of the ash hopper (9) is equipped with a pneumatic unblocking pipe (16), which is inserted obliquely into the interior of the ash hopper (9).

7. The high-efficiency dust removal device for tension rollers according to claim 4, characterized in that: A cartridge filter (17) is installed on the upper surface of the ash hopper (9).

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