Dust removal system for copper wire rod smelting production and dust removal process thereof

Abstract

The invention relates to the technical field of copper wire rod production, in particular to a dust removal system for copper wire rod smelting production and a dust removal process thereof.The dust removal system comprises a smoke outlet pipe connected with a smelting furnace and further comprises a cleaning box allowing a copper wire rod to penetrate through, a cloth belt used for cleaning the copper wire rod is arranged in the cleaning box, and a fan is arranged at the bottom of the cleaning box; the top of the cleaning box communicates with an air outlet pipe, the top end of the air outlet pipe is connected with a vacuum generator, an air outlet of the vacuum generator communicates with an exhaust cylinder, and a suction inlet of the vacuum generator communicates with the smoke outlet pipe. Smelting dust removal and copper wire rod dust removal are combined, only one fan is needed as a power source, and the energy-saving and environment-friendly effects are achieved; the heat of the smoke is utilized through the heat exchange pipe, and the copper wire rod is flushed through hot water, so that internal stress or structural damage of the copper wire rod caused by excessive cold contraction is avoided; and through the flushing box and the cleaning box, the surface of the output copper wire rod is smooth and clean, dust and water stain are avoided, the excellent cleanliness is achieved, and the impression is improved.

Description

Technical Field

[0001] The present application relates to the technical field of copper wire rod production, and in particular to a dust removal system and a dust removal process for copper wire rod smelting production. Background Art

[0002] Copper wire rods have good electrical conductivity and are the raw materials for the production of wires and cables. After copper is melted in a smelting furnace, it is made into copper wire rods by casting and rolling. The current production equipment can achieve continuous casting and rolling, and continuously output the finished copper wire rods. When using scrap copper for production, since the raw materials are mixed with impurities, the high temperature of copper during the smelting process causes the impurities to burn and produce smoke. A dust removal device is required to collect the smoke before the exhaust gas can be discharged into the atmosphere.

[0003] The existing utility model patent with announcement number CN220443386U discloses a flue gas dust removal device for copper rod smelting process, including a bag dust collector, an exhaust fan, a pulse dust removal device, four sets of pillars, an ash delivery device and a quantitative alarm device. The exhaust fan is installed at the upper right end of the bag dust collector, the exhaust fan input end is connected to the bag dust collector output end, the pulse dust removal device is installed inside the bag dust collector, and the lower left end of the bag dust collector is connected to the air inlet. The dust filtered by the bag dust collector is accumulated in the dust collecting pipe through a corrugated hose. The staff needs to clean the dust in the dust collecting pipe regularly, and the staff turns on the ash delivery device to discharge the dust in the dust collecting pipe through the ash delivery device.

[0004] With regard to the above-mentioned related technologies, the inventors believe that in the production process of copper wire rods, subsequent rolling, grinding, polishing and other processes are likely to generate dust on the surface of the copper wire rods, and the dust in the workshop will also fall onto the surface of the copper wire rods. The copper wire rods need to be further dusted before collection, and the new dust removal device requires the introduction of new fans, filtering structures, etc., which are costly and not conducive to energy saving. Summary of the invention

[0005] The present application provides a dust removal system and dust removal process for copper wire rod smelting production, which integrates the dust removal of the smelting furnace and the dust removal on the surface of the copper wire rod. Dust removal at two locations can be achieved using one fan and filtering structure, which reduces costs and is energy-saving and environmentally friendly.

[0006] The present application provides a dust removal system for copper wire rod smelting production, which adopts the following technical solution: A dust removal system for copper wire rod smelting production, comprising a smoke outlet pipe connected to a smelting furnace, wherein a bag dust collector is arranged in the smoke outlet pipe, and also comprising a cleaning box for the copper wire rods to pass through, wherein a cloth belt for cleaning the copper wire rods is arranged in the cleaning box, a fan is arranged at the bottom of the cleaning box, the blowing direction of the fan is upward, the top of the cleaning box is connected to an air outlet pipe, the top end of the air outlet pipe is connected to a vacuum generator, the air supply port of the vacuum generator is connected to the air outlet pipe, the air outlet of the vacuum generator is connected to an exhaust pipe, and the suction port of the vacuum generator is connected to the smoke outlet pipe.

[0007] By adopting the above technical solution, the surface of the copper wire rod is cleaned by a cloth belt in the cleaning box. After the wind blown out by the fan enters the vacuum generator, the suction port of the vacuum generator generates suction, which promotes the flow of smoke in the smoke outlet pipe, and the dust particles in the smoke are intercepted and captured by the bag dust collector.

[0008] Optionally, a flushing box is also included, and the copper wire rod first enters the flushing box and then enters the cleaning box. A spray head is provided in the flushing box, and the spray head is connected to a water pipe.

[0009] By adopting the above technical solution, the copper wire rod before scrubbing is rinsed through the spray head in the rinse box, thereby improving the cleaning effect of dust and preventing the subsequent cloth belt from getting dirty.

[0010] Optionally, the smoke outlet pipe is provided with a frame, a plurality of heat sinks are fixed on the frame, a heat exchange tube is provided through the heat sink, one end of the heat exchange tube is connected to a water source, and the other end of the heat exchange tube is connected to a water pipe.

[0011] By adopting the above technical solution, the heat in the flue gas is absorbed by the heat exchange tube, and the copper wire rod is flushed with hot water. Compared with direct flushing with cold water, it can avoid excessive shrinkage that may cause internal stress or structural damage to the copper wire rod, and on the other hand, it can increase the drying speed of the water in the subsequent steps.

[0012] Optionally, the frame is slidably connected to the smoke outlet pipe, the smoke outlet pipe is provided with an opening for the frame to slide, a plurality of sealing rings are fixed on the frame along its length direction, and the sealing rings seal the opening when sliding to the opening.

[0013] By adopting the above technical solution, personnel can adjust the number of heat sinks in the smoke outlet pipe through the sliding frame, and at the same time adjust the length of the heat exchange tube in the smoke outlet pipe, thereby adjusting the heat exchange rate between the heat exchange tube and the flue gas, thereby adjusting the water temperature in the water pipe. After the adjustment is completed, the opening is closed by a sealing ring to prevent air leakage.

[0014] Optionally, the frame is located on a side of the bag filter close to the vacuum generator, a thermometer is provided on the water pipe, and the water pipe is wrapped with a heat-insulating layer.

[0015] By adopting the above technical solution, the water temperature read by the thermometer is used as a reference for the water temperature sprayed by the sprinkler head. The thermal insulation layer is used to reduce the heat loss of the water in the water pipe during the transportation process.

[0016] Optionally, a scraper ring made of a flexible material is fixed at an outlet of the copper wire rod of the flushing box, and the scraper ring is slidably sleeved outside the copper wire rod.

[0017] By adopting the above technical solution, the water on the outer wall of the copper wire rod is scraped off by the scraping ring, which facilitates improving the drying efficiency of the copper wire rod in subsequent steps.

[0018] Optionally, a plurality of cloth belts are provided along the length direction of the copper wire rod, and both ends of the cloth belts are fixed to the cleaning box. The cloth belts are inclined at different angles and all abut against the outer wall of the copper wire rod.

[0019] By adopting the above technical solution, different circumferential positions of the copper wire rod are wiped by multiple cloth tapes.

[0020] Optionally, the cloth belt is tensioned outside the copper wire rod, and the cloth belt is bent at the copper wire rod so that the cloth belt has a wrap angle with respect to the copper wire rod.

[0021] By adopting the above technical solution and forming a wrap angle, the wiping range of the cloth belt is expanded and the cleaning effect is improved.

[0022] In a second aspect, the present application provides a dust removal process for copper wire rod smelting production, which adopts the following technical solution: A dust removal process for copper wire rod smelting production, using the above-mentioned dust removal system for copper wire rod smelting production, comprises the following steps: Step S1: The smelting furnace smelts copper, generates dusty exhaust gas which enters the smoke outlet pipe, and the bag filter intercepts the dust; Step S2: After the production is completed, the copper wire rods pass through the flushing box and then enter the cleaning box in sequence, and the water source entering the heat exchange tube is turned on. After the water is heated by the heat exchange tube, it reaches the flushing box and is sprayed out from the spray head to flush the surface of the copper wire rod; Step S3: Start the fan, and use the cloth belt in the cleaning box to wipe the copper wire rod dry, while using wind power to accelerate the drying; Step S4: After the wind blown out by the fan enters the vacuum generator, the suction port of the vacuum generator generates suction force, which promotes the flow of smoke in the smoke outlet pipe.

[0023] By adopting the above technical solution, the smelting dust removal and copper wire rod dust removal are combined, and only one fan is needed as the power source, thus achieving the effect of energy saving and environmental protection.

[0024] Optionally, the water temperature for flushing the copper wire rods in the flushing box is 30-40°C.

[0025] By adopting the above technical solution, the water temperature is higher than the room temperature and is close to the temperature of the copper wire rod before flushing, thereby avoiding excessive shrinkage that may cause internal stress or structural damage to the copper wire rod.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Combine smelting dust removal and copper wire rod dust removal, and only one fan is needed as the power source, which can achieve the effect of energy saving and environmental protection; 2. The heat of the flue gas is utilized through the heat exchange tube, and the copper wire rod is washed with hot water. On the one hand, it can avoid excessive shrinkage causing internal stress or structural damage to the copper wire rod, and on the other hand, it can increase the drying speed of the water in the subsequent steps; 3. Through the flushing box and cleaning box, the output copper wire rod surface is smooth, free of dust and water stains, with excellent cleanliness and improved appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a system diagram of a dust removal system for copper wire rod smelting production in an embodiment; Figure 2 is a three-dimensional diagram of a smoke outlet pipe and a frame of an embodiment; Figure 3 is a three-dimensional diagram of a frame and heat exchange tubes of an embodiment; Figure 4 2 is a structural diagram of the interior of the cleaning box in the embodiment.

[0028] Explanation of the reference numerals: 1. smoke outlet pipe; 2. flushing box; 3. cleaning box; 11. bag filter; 31. fan; 32. outlet pipe; 4. vacuum generator; 41. exhaust pipe; 12. frame; 13. heat sink; 14. heat exchange tube; 21. water pipe; 10. opening; 15. sealing ring; 22. sprinkler head; 23. insulation layer; 24. thermometer; 25. scraper ring; 32. cloth belt. DETAILED DESCRIPTION

[0029] The present application is further described in detail below in conjunction with the accompanying drawings.

[0030] Embodiment 1:

[0031] Reference Figure 1 This embodiment discloses a dust removal system for copper wire rod smelting production, including a smoke outlet pipe 1 connected to a smelting furnace, a flushing box 2 for the copper wire rod to pass through, and a cleaning box 3. The smoke outlet pipe 1 is connected to the inner top of the smelting furnace and is used to discharge the smoke and waste gas generated by smelting; after the copper liquid produced by the smelting furnace is discharged, it is solidified, rolled and other processes to form copper wire rods. Before leaving the factory, the copper wire rods first enter the flushing box 2 and then enter the cleaning box 3. What this application wants to protect is the dust removal system, so the production equipment for manufacturing copper wire rods is omitted.

[0032] A bag filter 11 is provided in the smoke outlet pipe 1. The bag filter 11 is a prior art. The dust particles in the smoke are intercepted and captured by the bag filter 11. A fan 31 is provided at the bottom of the cleaning box 3. The blowing direction of the fan 31 is upward. The top of the cleaning box 3 is connected to an air outlet pipe 32. The top of the air outlet pipe 32 is connected to a vacuum generator 4. The air supply port of the vacuum generator 4 is connected to the air outlet pipe 32. The air outlet of the vacuum generator 4 is connected to an exhaust pipe 41. The suction port of the vacuum generator 4 is connected to the smoke outlet pipe 1. The vacuum generator 4 is a prior art. When the air flow enters from the air supply port of the vacuum generator 4 and is discharged from the air outlet, the suction port of the vacuum generator 4 generates suction, thereby forming a negative pressure in the smoke outlet pipe 1, reducing the exhaust pressure of the smelting furnace, and making the exhaust of the smoke smoother. At the same time, the suction force is not a strong suction force, which avoids excessive suction of the smelting furnace and excessive heat leakage. The exhaust gas after dust removal by the bag filter 11 and the air flow blown out by the fan 31 are mixed in the vacuum generator 4 and then discharged from the exhaust pipe 41.

[0033] Reference Figure 2 and Figure 3 The smoke outlet pipe 1 is provided with a frame 12, a plurality of heat sinks 13 are fixed on the frame 12, a heat exchange tube 14 is provided through the heat sink 13, the heat exchange tube 14 is bent in an S shape, the contact position between the heat exchange tube 14 and the heat sink 13 is sealed, one end of the heat exchange tube 14 is connected to a water source, and the other end of the heat exchange tube 14 is connected to a water pipe 21. The exhaust gas discharged from the smelting furnace has a high temperature, and part of the heat is recovered through the heat sink 13 and the heat exchange tube 14, thereby increasing the water temperature output by the water pipe 21.

[0034] The frame 12 is slidably connected to the smoke outlet pipe 1. The smoke outlet pipe 1 is provided with an opening 10 for the frame 12 to slide. A plurality of sealing rings 15 are fixed on the frame 12 along its length direction. The sealing ring 15 is a rectangular ring. The inner wall of the sealing ring 15 is tightly attached to and fixed to the heat sink 13 and the frame 12. When the sealing ring 15 slides to the opening 10, the outer wall of the sealing ring 15 squeezes the inner wall of the opening 10, thereby sealing the opening 10 to prevent smoke from leaking out through the opening 10. Personnel can adjust the number of heat sinks 13 in the smoke outlet pipe 1 by sliding the frame 12, and adjust the length of the heat exchange tube 14 in the smoke outlet pipe 1, thereby adjusting the heat exchange between the heat exchange tube 14 and the smoke, and thus adjusting the water temperature in the water pipe 21.

[0035] Reference Figure 1 and Figure 2 The frame 12 is located on the side of the bag filter 11 close to the vacuum generator 4, that is, the flue gas is first dusted before heat exchange, so as to reduce the pollution of the heat sink 13 and the heat exchange tube 14 by the smoke, and reduce the cleaning frequency. When the outer wall of the heat sink 13 and the heat exchange tube 14 needs to be cleaned, the frame 12 can be directly pulled out from the opening 10.

[0036] A spray head 22 is provided in the flushing box 2, and the spray head 22 is fixed to the inner top of the flushing box 2. The end of the water pipe 21 away from the heat exchange tube 14 is connected to the spray head 22. It should be noted that the water source fed into the heat exchange tube 14 comes from the tap water pipe 21 or the water tank on the roof, which has water outlet pressure. The frame 12 and the heat exchange tube 14 are located at a position higher than the flushing box 2. The water falls directly downward by gravity and sprays out from the spray head 22. There is no need to set up a water pump for water transportation, which is more energy-saving. Preferably, a plurality of spray heads 22 are provided to increase the spray range and improve the flushing effect on the copper wire rod.

[0037] The water pipe 21 is wrapped with an insulation layer 23, which can be made of insulation cotton or other insulation materials to reduce the heat loss of the water in the water pipe 21 during transportation. A thermometer 24 is provided on the water pipe 21, and the water temperature read by the thermometer 24 is used as a reference for the water temperature sprayed by the sprinkler head 22. The thermometer 24 is located close to the sprinkler head 22 to reduce the deviation caused by the temperature reading.

[0038] In order to improve production efficiency, the copper wire rods are processed continuously during the production process. The copper wire rods are not completely cooled before entering the flushing box 2, and their temperature is still relatively high. Flushing the copper wire rods with hot water, compared with direct flushing with cold water, can avoid excessive shrinkage that may cause internal stress or structural damage to the copper wire rods, and on the other hand, it can increase the drying speed of the water in subsequent steps.

[0039] A scraper ring 25 made of flexible material is fixed at the outlet of the copper wire rod of the flushing box 2. The scraper ring 25 is slidably mounted outside the copper wire rod. The water on the outer wall of the copper wire rod is scraped off by the scraper ring 25, so as to improve the drying efficiency of the copper wire rod in subsequent steps. The scraped water falls to the inner bottom of the flushing box 2, and the scraper ring 25 made of flexible material will not damage the surface of the copper wire rod.

[0040] Reference Figure 1 and Figure 4 The left and right sides of the cleaning box 3 are provided with holes for the copper wire rod to pass through. The cleaning box 3 is provided with a cloth belt 32 for cleaning the copper wire rod. A plurality of cloth belts 32 are provided along the length direction of the copper wire rod. Both ends of the cloth belt 32 are fixed to the cleaning box 3. The cloth belt 32 is inclined at different angles and abuts against the outer wall of the copper wire rod. The cloth belt 32 is stretched outside the copper wire rod, and the cloth belt 32 is bent at the copper wire rod, so that the cloth belt 32 has a wrap angle with the copper wire rod. Multiple cloth belts 32 cooperate so that each position of the copper wire rod in the circumferential direction can be wiped by the cloth belt 32.

[0041] The cloth belt 32 is made of a breathable and water-absorbent material. The dust on the surface of the copper wire rod output from the flushing box 2 has been washed away, so it is relatively clean. Therefore, the cloth belt 32 is not easy to get dirty. The main function of the cloth belt 32 is to absorb water and wipe off water stains. Under the joint action of the wind force of the fan 31, the surface of the copper wire rod can be dried quickly, and the cloth belt 32 itself can also dry quickly, so the cloth belt 32 can be used continuously.

[0042] After being rinsed in the rinse box 2, wiped and dried in the cleaning box 3, the output copper wire rod has a smooth surface, free of dust and water stains, and has excellent cleanliness, which improves the appearance.

[0043] Embodiment 2:

[0044] A dust removal process for copper wire rod smelting production, using a dust removal system for copper wire rod smelting production of embodiment 1, comprises the following steps: Step S1: The smelting furnace smelts copper, and generates dusty exhaust gas which enters the smoke outlet pipe 1 , and the bag filter 11 intercepts the dust.

[0045] Step S2: After the production is completed, the copper wire rods pass through the washing box 2 and then enter the cleaning box 3. The copper wire rods are driven by the traction device on the production line to move continuously. The water source entering the heat exchange tube 14 is turned on. The water is heated by the heat exchange tube 14 and reaches the washing box 2 and is sprayed from the spray head 22 to wash the surface of the copper wire rod.

[0046] By observing the thermometer 24 and the sliding frame 12, the water temperature for flushing the copper wire rods in the flushing box 2 is set to 30-40°C, which is higher than the room temperature and close to the temperature of the copper wire rods before flushing, thereby avoiding excessive shrinkage that may cause internal stress or structural damage to the copper wire rods.

[0047] Step S3: Start the fan 31, and the cloth belt 32 in the cleaning box 3 wipes the copper wire rod dry, while the wind force is used to accelerate the drying.

[0048] Step S4: After the air blown by the fan 31 enters the vacuum generator 4, the suction port of the vacuum generator 4 generates suction force to promote the flow of smoke in the smoke outlet pipe 1. The exhaust gas and the air flow blown by the fan 31 are mixed in the vacuum generator 4 and then discharged from the exhaust pipe 41.

[0049] The implementation principle of the present application is: through the above-mentioned dust removal system and dust removal process, the smelting dust removal and copper wire rod dust removal are combined, and only one fan 31 is needed as the power source, which achieves the effect of energy saving and environmental protection; through the flushing box 2 and the cleaning box 3, the surface of the output copper wire rod is made smooth, free of dust and water stains, with excellent cleanliness, and improves the appearance.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dust removal system for copper wire rod smelting production, comprising a smoke outlet pipe (1) connected to a smelting furnace, wherein a bag dust collector (11) is arranged in the smoke outlet pipe (1), characterized in that: It also comprises a cleaning box (3) for the copper wire rod to pass through, a cloth belt (32) for cleaning the copper wire rod is arranged in the cleaning box (3), a fan (31) is arranged at the bottom of the cleaning box (3), the blowing direction of the fan (31) is upward, the top of the cleaning box (3) is connected to an air outlet pipe (32), the top end of the air outlet pipe (32) is connected to a vacuum generator (4), the air supply port of the vacuum generator (4) is connected to the air outlet pipe (32), the air outlet of the vacuum generator (4) is connected to an exhaust pipe (41), and the suction port of the vacuum generator (4) is connected to the smoke outlet pipe (1).

2. A dust removal system for copper wire rod smelting production according to claim 1, characterized in that: It also comprises a flushing box (2), wherein the copper wire rod first enters the flushing box (2) and then enters the cleaning box (3), wherein a spray head (22) is arranged in the flushing box (2), and the spray head (22) is connected to a water pipe (21).

3. A dust removal system for copper wire rod smelting production according to claim 2, characterized in that: The smoke outlet pipe (1) is provided with a frame (12), a plurality of heat sinks (13) are fixed on the frame (12), a heat exchange tube (14) is provided through the heat sink (13), one end of the heat exchange tube (14) is connected to a water source, and the other end of the heat exchange tube (14) is connected to a water pipe (21).

4. A dust removal system for copper wire rod smelting production according to claim 3, characterized in that: The frame (12) is slidably connected to the smoke outlet pipe (1); the smoke outlet pipe (1) is provided with an opening (10) for the frame (12) to slide; a plurality of sealing rings (15) are fixed to the frame (12) along its length direction; when the sealing rings (15) slide to the opening (10), the opening (10) is sealed.

5. A dust removal system for copper wire rod smelting production according to claim 3, characterized in that: The frame (12) is located on a side of the bag filter (11) close to the vacuum generator (4), a thermometer (24) is provided on the water pipe (21), and the water pipe (21) is wrapped with a heat-insulating layer (23).

6. A dust removal system for copper wire rod smelting production according to claim 2, characterized in that: A scraper ring (25) made of a flexible material is fixed at the outlet of the copper wire rod of the flushing box (2), and the scraper ring (25) is slidably sleeved outside the copper wire rod.

7. A dust removal system for copper wire rod smelting production according to claim 1, characterized in that: A plurality of cloth belts (32) are provided along the length direction of the copper wire rod, and both ends of the cloth belts (32) are fixed to the cleaning box (3). The cloth belts (32) are inclined at different angles and all abut against the outer wall of the copper wire rod.

8. A dust removal system for copper wire rod smelting production according to claim 7, characterized in that: The cloth belt (32) is stretched outside the copper wire rod, and the cloth belt (32) is bent at the copper wire rod, so that the cloth belt (32) has a wrap angle with respect to the copper wire rod.

9. A dust removal process for copper wire rod smelting production, characterized in that: A dust removal system for copper wire rod smelting production using any one of claims 1 to 8 comprises the following steps: Step S1: The smelting furnace smelts copper, generating dusty exhaust gas which enters the smoke outlet pipe (1), and the bag filter (11) intercepts the dust; Step S2: After the production is completed, the copper wire rods pass through the flushing box (2) and then enter the cleaning box (3), and the water source entering the heat exchange tube (14) is turned on. After the water is heated by the heat exchange tube (14), it reaches the flushing box (2) and is sprayed out from the spray head (22) to flush the surface of the copper wire rods; Step S3: starting the fan (31), and using the cloth belt (32) in the cleaning box (3) to wipe the copper wire rod dry, while using wind power to accelerate the drying; Step S4: After the air blown out by the fan (31) enters the vacuum generator (4), the suction port of the vacuum generator (4) generates suction force, which causes the smoke in the smoke outlet pipe (1) to flow, and the exhaust gas and the air flow blown out by the fan (31) are mixed in the vacuum generator (4) and then discharged from the exhaust pipe (41).

10. A dust removal process for copper wire rod smelting production according to claim 9, characterized in that: The water temperature for flushing the copper wire rod in the flushing box (2) is 30-40°C.

Images