Environment-friendly cable wire drawing device with copper powder recovery and non-contact cleaning

Abstract

The application discloses an environment-friendly cable wire drawing device with copper powder recovery and non-contact cleaning, and relates to the technical field of metal wire processing equipment. The inside of the main box body of the device is divided into a dust removal cavity, a cooling cavity and a drying cavity which are sequentially communicated by a partition. The annular air knife and the negative pressure suction ring cavity which are coaxially nested are arranged in the dust removal cavity, so that non-contact lossless dust removal is realized. The atomizing spray pipe row and the ultrasonic vibration plate are arranged in the cooling cavity, so that efficient cooling and cleaning are realized through latent heat of phase transition and cavitation effect. The high-frequency electromagnetic induction heating ring and the vortex hot air knife are sequentially arranged in the drying cavity, so that blind area-free complete air drying is realized by using electromagnetic skin preheating and spiral airflow water cutting. In addition, the centrifugal solid-liquid separator and the refrigerated water tank are communicated below the cooling cavity. The application completely eliminates the hidden trouble of thermal oxidation caused by traditional contact type consumable wear and dead water cooling, realizes full-closed loop zero emission of the cooling liquid and purification and realization of high-purity copper powder resources, and greatly improves the product quality and environmental protection economic benefits.

Description

Technical Field

[0001] This invention relates to environmentally friendly cable drawing technology, and more particularly to an environmentally friendly cable drawing device that features copper powder recovery and non-contact cleaning. Background Technology

[0002] Currently, wire drawing machines for cable processing are pre-processing equipment used in the production of standard parts and other metal products. Their purpose is to draw wires or rods transported from steel manufacturers to these manufacturers, ensuring that the diameter, roundness, internal metallographic structure, surface finish, and straightness of the wires or rods meet the raw material processing requirements for standard parts and other metal products. Therefore, the quality of the wire or rod pre-processing by the wire drawing machine directly affects the product quality of standard parts and other metal product manufacturers. Wire drawing machines belong to the metal products equipment industry and are widely used in the production and pre-processing of metal products such as steel wire, rope wire, prestressed steel wire, and standard parts.

[0003] Patent document with application number "CN202010444000.6" discloses an environmentally friendly and efficient wire drawing device for cable production and its usage method. The device includes a wire drawing apparatus, with a cleaning device and a feeding device positioned before the feed end, and an adjustment device and a winding device positioned after the discharge end. This structure significantly improves the efficiency of the entire wire drawing process, saves manpower, is more convenient, and facilitates continuous product processing. The entire wire drawing process generates minimal pollution, which can be effectively collected and treated, avoiding significant pollution to air and water sources. Multi-stage wire drawing combined with cutting powder not only effectively reduces the heat generated during the wire drawing process but also protects the wire material from corrosion. The entire wire drawing production line has a reasonable structure, is easy to use, provides good wire drawing results, is highly efficient, and has strong practicality.

[0004] Patent document with application number "CN202121490664.2" discloses an environmentally friendly wire drawing device for processing copper wire in cables. The device includes a first support plate, a water tank, a second support plate, and a crushing chamber. Cylinders are vertically mounted evenly around the top of the second support plate, and hydraulic rods are vertically mounted at the output ends of the cylinders. The first support plate is horizontally mounted at the top of the hydraulic rods, and first springs are vertically mounted evenly at both ends of the top of the first support plate. The water tank is horizontally mounted at the top of the first springs, and a water inlet is provided at one end of the top of the water tank. A first motor is horizontally mounted on the top of the water tank on the side of the water tank near the water inlet via a base. The crushing chamber is mounted on the top of the water tank on the side of the water tank furthest from the water inlet. This environmentally friendly wire drawing device for processing copper wire in cables uses a second motor to drive a rotating shaft, which in turn drives a second, third, and first crushing blade to rotate, thereby increasing the efficiency of plant crushing.

[0005] The aforementioned patent documents, in conjunction with existing technologies, reveal the following shortcomings of current environmentally friendly cable drawing devices that feature copper powder recovery and non-contact cleaning: 1. Severe mechanical wear and high maintenance costs: Physical brush bristles and absorbent sponges are highly susceptible to carbonization, wear, and structural fatigue when exposed to high-temperature copper wires traveling at linear speeds of tens of meters per second. These contact-type consumables have extremely short lifespans, leading to frequent equipment downtime for replacement and disrupting production continuity.

[0006] 2. Low static heat exchange efficiency and oxidation blind zone: After continuously drawing a large number of high-temperature copper wires, the temperature of the water in the static cooling water bath will rise rapidly. Due to the lack of active cooling and strong convection circulation, the copper wires exiting later cannot be effectively cooled and are very prone to oxidation upon contact with air.

[0007] 3. Numerous blind spots in cleaning and low waste recycling rate: Water bath immersion cannot effectively remove the micron-sized oxide scale tightly adhering to the surface of copper wires and the copper powder pressed into scratches; more importantly, the washed-off copper powder and impurities usually mix into sludge that settles at the bottom of the water or are directly discharged with the cooling waste liquid. This not only increases the burden on environmental treatment but also wastes high-purity copper powder resources with extremely high reuse value. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies, this invention provides an environmentally friendly cable drawing device that integrates copper powder recovery and non-contact cleaning, thus solving the problem of environmentally friendly cable drawing devices that combine copper powder recovery and non-contact cleaning.

[0009] The first aspect of the present invention is to provide an environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning, characterized in that it includes: a main housing (100), the internal space of which is divided into a dust removal chamber, a cooling chamber and a drying chamber in sequence by a vertically arranged partition (101); an inlet (102) is provided on one end side wall of the main housing (100) in the dust removal chamber, and an outlet (103) is provided on one end side wall of the main housing (100) in the drying chamber; a non-contact dust removal module is provided in the dust removal chamber, including an annular air knife (201) coaxially nested inside the inlet (102) and a negative pressure suction annular cavity (202) surrounding the annular air knife (201). The cooling chamber is equipped with an ultrasonic atomizing cooling module, including a guide wheel group (301) staggered vertically to guide the copper wire to travel in multiple zigzags, an array of atomizing spray pipes (303) surrounding the outside of the copper wire's travel path, and an ultrasonic vibrating plate (302) fixedly installed on the bottom wall of the cooling chamber. The drying chamber is equipped with a drying output module, including a high-frequency electromagnetic induction heating ring (401) and a vortex hot air knife (402) arranged coaxially along the copper wire output direction; the cooling chamber is equipped with an environmental protection circulation and recycling module below, including a guide funnel (501) fixed to the bottom of the cooling chamber. The bottom outlet of the guide funnel (501) is connected to a centrifugal solid-liquid separator (502) through a sealed pipeline. The solid discharge port at the bottom of the centrifugal solid-liquid separator (502) is connected to a copper powder collection box (503), and the liquid discharge port on the side is connected to a cooling water tank (504). The output end of the cooling water tank (504) is connected to the atomizing spray pipe (303) through a high-pressure water pump (505) to form a closed-loop fluid circuit.

[0010] In a first aspect of the present invention, as a preferred embodiment, the inner annular air knife (201) has a continuous annular slit air outlet, which is inclined at an acute angle of 30° to 45° toward the inlet (102); the air inlet end of the annular air knife (201) is connected to a high-pressure blower (203) through a pipeline to generate a reverse cutting airflow.

[0011] In a first aspect of the present invention, as a preferred embodiment, the suction port of the negative pressure suction ring cavity (202) is expanded in a trumpet shape, and its opening direction is directly opposite to the diffusion area of ​​the reverse cutting airflow generated by the annular air knife (201); the exhaust end of the negative pressure suction ring cavity (202) is connected to a first dust collection tank (204), and the first dust collection tank (204) has a built-in microporous filter element.

[0012] In a first aspect of the present invention, as a preferred embodiment, the partition (101) is provided with a through hole for copper wires to pass through; a pneumatic water-blocking ring is coaxially embedded at the through hole of the partition (101) between the cooling chamber and the drying chamber, and the pneumatic water-blocking ring continuously sprays radial high-pressure air to one side of the cooling chamber to form an invisible air curtain that isolates water mist.

[0013] In a first aspect of the present invention, as a preferred embodiment, the bottom of the cooling cavity specifically includes a liquid collecting bottom wall that is converging towards the center in an inverted cone shape, and the lowest point of the liquid collecting bottom wall is seamlessly connected to the top opening of the guide funnel (501); the ultrasonic transducer (302) is uniformly attached to the back surface of the liquid collecting bottom wall, and the ultrasonic wave emitted by it is focused towards the central wiring area of ​​the cooling cavity.

[0014] In a first aspect of the invention, as a preferred embodiment, the guide wheel assembly (301) includes at least two sets of fixed pulleys arranged in parallel vertically; the atomizing spray pipe array (303) includes multiple main pipes parallel to the travel path of the copper wire, and each main pipe is provided with multiple high-pressure atomizing micro-nozzles at equal intervals, the spray angle of the nozzles intersecting and covering the circumferential surface of the copper wire.

[0015] In a first aspect of the present invention, as a preferred embodiment, the centrifugal solid-liquid separator (502) is provided with a high-speed rotating conical separation drum inside; the copper powder collection box (503) is detachably and sealed to the solid discharge port of the centrifugal solid-liquid separator (502) through a quick-release flange, and a splash-proof maintenance gate valve is connected in series above the solid discharge port.

[0016] In a first aspect of the present invention, as a preferred embodiment, the cooling water tank (504) is internally distributed with titanium alloy cooling coils connected to an external compressor, and the water body is immersed without a temperature sensor and an anti-dry-burning liquid level sensor; the temperature sensor is electrically connected to an external PLC control cabinet and is used to dynamically adjust the cooling power of the compressor to maintain the coolant in a constant temperature range of 15°C to 20°C.

[0017] In a first aspect of the present invention, as a preferred embodiment, the high-frequency electromagnetic induction heating ring (401) includes a heat-insulating shell and a built-in induction coil, the operating frequency of which is set to 50kHz~100kHz; the top side wall of the drying chamber is provided with a dehumidification vent (403), and an induced exhaust fan is provided at the dehumidification vent (403).

[0018] In a first aspect of the present invention, as a preferred embodiment, the inner ring wall of the vortex hot air knife (402) is provided with a spirally arranged circumferential guide groove, and the jet direction of the guide groove is at an angle of 15° to 25° with the axial direction of the copper wire, for spraying a spiral hot air flow that fits the tangential direction onto the surface of the copper wire.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention abandons the traditional brush and adopts a ring-shaped air knife (201) driven by a high-pressure blower (203). The sharp-angled high-speed airflow ejected by the air knife acts like an invisible blade, cutting and peeling off oil and residue from the surface of the copper wire. At the same time, the outer nested negative pressure suction ring cavity (202) uses Bernoulli's principle to create a local vacuum, instantly and directionally sucking the scattered impurities into the first dust collection tank (204). The entire process is non-contact and frictionless, eliminating the cost of consumable replacement and the risk of physical scratches.

[0020] 2. Unlike inefficient static water baths, a high-pressure water pump (505) drives an atomizing spray pipe (303) to generate micron-sized water mist. When the fine water mist comes into contact with the high-temperature copper wire, it instantly undergoes a phase change and vaporizes. Utilizing the enormous latent heat absorbed during the liquid-to-gas transition, the copper wire experiences a second-level "cliff-like" cooling. At the same time, the high-frequency sound waves emitted by the ultrasonic vibrating plate (302) generate "cavitation bubbles" in the residual liquid film. The localized shock waves (up to thousands of atmospheres) generated by the implosion of these bubbles can thoroughly dislodge the extremely fine copper powder and nascent oxide layer embedded in the microscopic pits of the copper wire, achieving a "deep microscopic cleaning" effect.

[0021] 3. Under the action of a high-frequency alternating magnetic field, the high-frequency electromagnetic induction heating ring (401) causes the copper wire to produce a skin effect. Heat is generated only on the surface of the copper wire (strictly controlled at 60℃~80℃), which not only destroys the adhesion tension of water molecules on the metal surface, but also ensures safety because the oxidation temperature of the metal is not reached. Immediately afterwards, the spiral tangential airflow ejected by the vortex hot air knife (402) covers the copper wire like a tornado, using rotational shearing force to instantly throw off the water droplets that have lost their adhesion and vaporize them. The water vapor is discharged from the exhaust vent (403). This mechanism ensures that the copper wire is absolutely dry when it comes out, fundamentally eliminating slow oxidation after winding.

[0022] 4. The copper-containing waste liquid enriched by the guide funnel (501) is sent to the centrifugal solid-liquid separator (502). Utilizing the density difference, the high-purity detached copper powder is separated by centrifugal force and settles into the copper powder collection box (503). This copper powder can be directly recycled as a metallurgical raw material, creating considerable recycling revenue for the enterprise. The filtered clean water enters the cooling water tank (504) for forced cooling and heat exchange, and is then recycled back into the system. The entire process achieves "zero loss and zero discharge" of water resources, perfectly meeting the highest standards of modern green manufacturing. Attached Figure Description

[0023] Figure 1 for Figure 1 This is a front sectional view of the overall structure of an embodiment of the present invention; Figure 2 This is a partial enlarged schematic diagram of the dust removal chamber (non-contact inlet module) of the present invention; Figure 3 This is a partial enlarged schematic diagram of the drying chamber (electromagnetic and vortex drying module) of the present invention; Figure 4 This is a block diagram showing the pipeline connection of the environmental protection recycling and copper powder recovery module at the bottom of the present invention.

[0024] In the diagram: 100, Main housing; 101, Partition plate; 102, Cable inlet; 103, Cable outlet; 201, Annular air knife; 202, Negative pressure suction ring cavity; 203, High-pressure fan; 204, First dust collection tank; 301, Guide wheel assembly; 302, Ultrasonic vibrating plate; 303, Atomizing spray pipe array; 401, High-frequency electromagnetic induction heating ring; 402, Vortex hot air knife; 403, Exhaust vent; 501, Guide funnel; 502, Centrifugal solid-liquid separator; 503, Copper powder collection box; 504, Cooling water tank; 505, High-pressure water pump. Detailed Implementation

[0025] The invention will now be further described with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0029] like Figure 1-3 As shown, the environmentally friendly cable drawing device in this embodiment is built inside a structurally stable main housing (100). The internal space of the main housing (100) is vertically divided by two sealed partitions (101), forming a continuous but environmentally isolated production line: the first section is a dust removal chamber, the second section is a cooling chamber, and the third section is a drying chamber. The high-temperature copper wire with slag to be processed is continuously fed in from the inlet (102), and after completing the three major processes of dust removal, cooling and cleaning, and rapid drying, it is discharged from the outlet (103).

[0030] Specifically, the present invention provides an environmentally friendly cable drawing device for copper powder recovery and non-contact cleaning, comprising: a main housing (100), the internal space of which is divided into a dust removal chamber, a cooling chamber and a drying chamber in sequence by a vertically arranged partition (101); an inlet (102) is provided on one end side wall of the main housing (100) in the dust removal chamber, and an outlet (103) is provided on one end side wall of the main housing (100) in the drying chamber; a non-contact dust removal module is provided in the dust removal chamber, including an annular air knife (201) coaxially nested inside the inlet (102) and a negative pressure suction annular cavity (202) surrounding the annular air knife (201). The cooling chamber is equipped with an ultrasonic atomizing cooling module, including a guide wheel group (301) staggered vertically to guide the copper wire to travel in multiple zigzags, an array of atomizing spray pipes (303) surrounding the outside of the copper wire's travel path, and an ultrasonic vibrating plate (302) fixedly installed on the bottom wall of the cooling chamber. The drying chamber is equipped with a drying output module, including a high-frequency electromagnetic induction heating ring (401) and a vortex hot air knife (402) arranged coaxially along the copper wire output direction; the cooling chamber is equipped with an environmental protection circulation and recycling module below, including a guide funnel (501) fixed to the bottom of the cooling chamber. The bottom outlet of the guide funnel (501) is connected to a centrifugal solid-liquid separator (502) through a sealed pipeline. The solid discharge port at the bottom of the centrifugal solid-liquid separator (502) is connected to a copper powder collection box (503), and the liquid discharge port on the side is connected to a cooling water tank (504). The output end of the cooling water tank (504) is connected to the atomizing spray pipe (303) through a high-pressure water pump (505) to form a closed-loop fluid circuit.

[0031] It should also be noted that the "phase change latent heat + acoustic cavitation" composite cooling method greatly improves surface purity: Unlike inefficient static water baths, a high-pressure water pump (505) drives the atomizing spray pipe (303) to generate micron-level water mist. When the fine water mist comes into contact with the high-temperature copper wire, it instantly undergoes a phase change and vaporizes. Utilizing the enormous latent heat absorbed during the liquid-to-gas transition, the copper wire experiences a second-level "cliff-like" cooling. At the same time, the high-frequency sound waves emitted by the ultrasonic transducer (302) generate "cavitation bubbles" in the residual liquid film. The localized shock waves (up to thousands of atmospheres) generated by the implosion of these bubbles can thoroughly dislodge the extremely fine copper powder and nascent oxide layer embedded in the microscopic pits of the copper wire, achieving a "deep microscopic cleaning" effect.

[0032] like Figure 2As shown, the inlet end adopts a gas phase stripping and negative pressure dust collection method. In the inlet (102) area, in order to solve the problem of the wear and frequent replacement of copper wires by traditional physical brushes, the present invention adopts a pure airflow treatment scheme. The copper wire is first inserted into the central hole of the annular air knife (201), which is supplied with pressure air by a high-pressure blower (203). The annular slit air outlet on its inner side is designed to be tilted outward (i.e., against the direction of copper wire travel) at a 35° angle. The high-speed airflow cuts the surface of the copper wire in the opposite direction in an umbrella shape, generating extremely strong stripping kinetic energy, instantly blowing away metal debris and mold lubricating oil residue.

[0033] To prevent blown-out impurities from contaminating the workshop air, the annular air knife (201) is tightly surrounded by a negative pressure suction annular cavity (202). This suction annular cavity is connected to an exhaust system, forming an annular negative pressure matrix at its suction port. Impurities blown away by the high-pressure air knife are captured directionally by the negative pressure field before they can diffuse, and are then guided along the pipeline into the first dust collection tank (204) for microporous filter sedimentation, achieving non-destructive cleaning at the microscopic level of the inlet end.

[0034] Specifically, the middle section adopts a phase change cooling and acoustic micro-cleaning method, in which the copper wire passes through the first partition (101) and enters the cooling chamber. Inside the chamber, the copper wire is wound around a guide wheel assembly (301) composed of multiple sets of parallel pulleys, forming an "S" or "W" shaped return path, which greatly extends the residence time and heat exchange path of the copper wire in the cooling chamber.

[0035] Around the guide wheel assembly (301), a dense array of atomizing spray pipes (303) is arranged. The atomizing spray pipes (303) spray out a fine coolant mist at the level of 20μm to 50μm. When these micron-sized droplets cover the surface of the high-temperature copper wire above 150°C, they undergo violent phase change vaporization, carrying away a large amount of heat energy, causing the temperature of the copper wire to drop sharply within a very short path. At the same time, the ultrasonic transducer plate (302) fixed to the bottom side wall of the cooling chamber is always on. In the local liquid film that is inevitably formed during the spraying process, the high-frequency oscillation of the ultrasonic waves triggers a "cavitation effect". Countless tiny cavitation bubbles are generated and violently burst in the grooves and drawing scratches on the surface of the copper wire, precisely "blasting" out and peeling off the deeply embedded stubborn copper powder and micro-oxide layer, giving the copper wire an extremely high surface finish.

[0036] Specifically, the underlying layer employs a solid-liquid centrifugal separation and closed-loop refrigeration implementation method. For example... Figure 4As shown, the resource recovery advantages of this invention are fully reflected in the bottom module. After spraying and ultrasonic cleaning, the cooling waste liquid carrying a large amount of high-purity copper powder falls into the guide funnel (501) directly below the cooling chamber under gravity. The waste liquid flows into the centrifugal solid-liquid separator (502) through the guide funnel (501). The high-speed rotating structure inside the separator generates a centrifugal field tens of times stronger than gravity. Since the density of copper powder (approximately 8.9 g / cm³) is much greater than that of water, copper-containing particles are quickly thrown towards the outer wall and flow from the solid outlet into the copper powder collection box (503), achieving 100% purification and recovery of metal resources.

[0037] Specifically, the clarified coolant, stripped of solid impurities, flows from the liquid outlet of the separator into the cooling water tank (504). The cooling water tank (504) is equipped with an industrial-grade compressor cooling pipe, which forces the water, which had absorbed heat from the copper wire and heated up, to a constant temperature of 15°C to 20°C. Finally, a high-pressure water pump (505) draws this low-temperature purified water, repressurizes it, and sends it to the atomizing spray pipe outlet (303), forming a completely wastewater-free ecological internal cycle.

[0038] Specifically, the output end employs an electromagnetic skin effect and vortex air-cutting drying method. For example... Figure 3As shown, the copper wire passing through the second partition (101) has residual water droplets on its surface. If the wire is directly wound up, the residual water will cause water spots or even chronic rusting on the copper wire. Therefore, the copper wire first passes through a high-frequency electromagnetic induction heating ring (401) in the drying chamber. This heating ring operates at a high frequency of 80kHz, utilizing the "skin effect" of metal, so that the alternating electromagnetic field generates eddy current heat only within a depth of about 0.1mm to 0.2mm on the surface of the copper wire. The surface of the copper wire rapidly heats up to 70°C within 1 second, causing the surface water film to expand due to heat, and its surface tension is completely destroyed. The preheated copper wire passes through a vortex hot air knife (402). The inner wall guide grooves of the vortex hot air knife (402) are arranged in a spiral array, and the hot air (about 50°C) sprayed out forms a "spiral storm" that wraps around the copper wire. This cyclone with strong tangential shear force can instantly scrape away and vaporize the water droplets whose surface tension has been destroyed without any blind spots. The generated high-temperature humid air rises naturally and is discharged into the factory's exhaust duct through the exhaust vent (403) at the top of the drying chamber. After this combined treatment, the final product exported from the outlet (103) achieves the ultimate dryness and smoothness requirements. By precisely matching fluid and electromagnetic parameters, the dependence on consumables of traditional equipment is completely eliminated. While improving the quality of the drawn wire diameter, it realizes the transformation of waste into treasure and has extremely high industrial promotion value. Under the action of a high-frequency alternating magnetic field, the high-frequency electromagnetic induction heating ring (401) causes the copper wire to produce a skin effect. Heat is only generated on the surface of the copper wire (strictly controlled at 60℃~80℃), which not only destroys the adhesion tension of water molecules on the metal surface, but also ensures safety because it does not reach the oxidation temperature of the metal. Immediately afterwards, the spiral tangential airflow sprayed by the vortex hot air knife (402) covers the copper wire like a tornado, and uses rotational shearing force to instantly throw off the water droplets that have lost their adhesion and vaporize them. The water vapor is discharged from the exhaust vent (403). This mechanism ensures that the copper wire exits the coil completely dry, fundamentally eliminating slow oxidation after winding.

[0039] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. An environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning capabilities, characterized in that, include: The main housing (100) has its internal space divided into a dust removal chamber, a cooling chamber, and a drying chamber by a vertically arranged partition (101). The main housing (100) has an inlet (102) on one side wall of the dust removal chamber and an outlet (103) on one side wall of the drying chamber. The dust removal chamber is equipped with a non-contact dust removal module, including an annular air knife (201) coaxially nested inside the inlet (102) and a negative pressure suction ring cavity (202) surrounding the annular air knife (201); the cooling chamber is equipped with an ultrasonic atomizing cooling module, including a guide wheel assembly (301) staggered vertically to guide the copper wire to travel in multiple zigzags, an array of atomizing spray pipes (303) surrounding the outside of the copper wire's travel path, and an ultrasonic vibrating plate (302) fixedly installed on the bottom wall of the cooling chamber; the drying chamber is equipped with a drying outlet module, including a high-frequency electromagnetic induction heating ring (401) and a vortex hot air knife (402) arranged coaxially along the copper wire outlet direction. The cooling chamber is equipped with an environmental protection circulation and recycling module, including a flow guide funnel (501) fixed to the bottom of the cooling chamber. The bottom outlet of the flow guide funnel (501) is connected to a centrifugal solid-liquid separator (502) through a sealed pipeline. The solid outlet at the bottom of the centrifugal solid-liquid separator (502) is connected to a copper powder collection box (503), and the liquid outlet on the side is connected to a cooling water tank (504). The output end of the cooling water tank (504) is connected to the atomizing spray pipe (303) through a high-pressure water pump (505) to form a closed-loop fluid circuit.

2. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 1, characterized in that: The inner ring surface of the annular air knife (201) is provided with a continuous annular slit air outlet, which is inclined at an acute angle of 30°~45° toward the inlet (102); the air inlet end of the annular air knife (201) is connected to a high-pressure blower (203) through a pipeline to generate a reverse cutting airflow.

3. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 2, characterized in that: The suction port of the negative pressure suction ring cavity (202) is expanded in a trumpet shape, and its opening direction is directly opposite to the diffusion area of ​​the reverse cutting airflow generated by the annular air knife (201); the exhaust end of the negative pressure suction ring cavity (202) is connected to the first dust collection tank (204), and the first dust collection tank (204) has a built-in microporous filter element.

4. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 1, characterized in that: The partition (101) has a through hole for copper wires to pass through; a pneumatic water-blocking ring is coaxially embedded in the through hole of the partition (101) between the cooling chamber and the drying chamber. The pneumatic water-blocking ring continuously sprays radial high-pressure air to one side of the cooling chamber to form an invisible air curtain that isolates water mist.

5. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 1, characterized in that: The bottom of the cooling chamber specifically includes a liquid collecting bottom wall that is converging towards the center in an inverted cone shape. The lowest point of the liquid collecting bottom wall is seamlessly connected to the top opening of the guide funnel (501). The ultrasonic transducer (302) is uniformly attached to the back surface of the liquid collecting bottom wall, and the ultrasonic wave emitted by it is focused towards the central wiring area of ​​the cooling chamber.

6. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 1, characterized in that: The guide wheel assembly (301) includes at least two sets of fixed pulleys arranged in parallel vertically; the atomizing spray pipe array (303) includes multiple main pipes parallel to the copper wire travel path, and each main pipe is provided with multiple high-pressure atomizing micro-nozzles at equal intervals, the spray angle of the nozzles intersecting to cover the circumferential surface of the copper wire.

7. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 1, characterized in that: The centrifugal solid-liquid separator (502) is equipped with a high-speed rotating conical separation drum inside; the copper powder collection box (503) is detachably and sealed to the solid discharge port of the centrifugal solid-liquid separator (502) through a quick-release flange, and a splash-proof maintenance gate valve is connected in series above the solid discharge port.

8. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 1, characterized in that: The cooling water tank (504) has titanium alloy cooling coils that are connected to an external compressor inside, and there are no temperature sensors or anti-dry-burning liquid level sensors inside the water tank. The temperature sensor is electrically connected to an external PLC control cabinet and is used to dynamically adjust the cooling power of the compressor to maintain the coolant in a constant temperature range of 15℃~20℃.

9. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 1, characterized in that: The high-frequency electromagnetic induction heating ring (401) includes a heat-insulating shell and a built-in induction coil, and its working frequency is set to 50kHz~100kHz; the top side wall of the drying chamber is provided with a dehumidification vent (403), and an induced exhaust fan is provided at the dehumidification vent (403).

10. The environmentally friendly cable drawing device with copper powder recovery and non-contact cleaning as described in claim 9, characterized in that: The inner ring wall of the vortex hot air knife (402) is provided with spirally arranged flow guide grooves. The air jet direction of the flow guide grooves forms an angle of 15° to 25° with the axial direction of the copper wire, which is used to spray a spiral hot air flow that fits the tangential direction onto the surface of the copper wire.

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