An oxygen-free copper smelting equipment using the upward method

Abstract

This invention belongs to the field of oxygen-free copper smelting technology and discloses an oxygen-free copper smelting device using an upward drawing method. The device includes a smelting furnace, with a conical plug fixedly installed on the bottom surface of the inner surface of the furnace. A connecting curved plate is fixedly installed on the outer surface of the furnace, and a motor base is fixedly installed on the end face of the connecting curved plate. A motor is fixedly installed on the inner surface of the motor base, and the output shaft of the motor is fixedly connected to a No. 1 pipe. This invention effectively avoids agitation of the upper charcoal layer during feeding by directly using internal air pressure. This reduces the breakage and fall of the upper charcoal layer during actual feeding, effectively preventing agitated charcoal fragments from entering the copper solution through the electrolytic copper gap. This reduces the amount of charcoal impurities mixed in, thereby reducing the filtration pressure on the ceramic filter in the outlet pipe, fundamentally reducing the amount of charcoal impurities mixed in, and improving the purity of the prepared oxygen-free copper.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen-free copper smelting, in particular to an oxygen-free copper smelting device using an upward-drawing method. Background Art

[0002] The oxygen-free copper smelting by upward method is a new process for producing oxygen-free copper rods. It has the characteristics of good product quality, low unit energy consumption, flexible and diverse production varieties and specifications, strong adaptability, no three wastes pollution, and low investment. It is an ideal process for copper conductors and copper materials processing. Oxygen-free copper (generally copper products with an oxygen content of less than 20PPM) is widely used in the production and manufacturing of electronics, electrical engineering, and electrical devices due to its good electrical and thermal conductivity. High-frequency transmitting tubes, ferry tubes, magnetrons, vacuum switch tubes and other products of vacuum devices all use oxygen-free copper materials. Since vacuum devices must be sealed in hydrogen during the manufacturing process, there are very strict regulations on the control of oxygen content in copper.

[0003] In the existing upward-drawing oxygen-free copper smelting equipment, during use, the electrolytic cylinder is usually placed in a smelting furnace, and the internal electrolytic copper is melted by starting the smelting electric furnace base at the bottom, using the power frequency iron-core induction smelting electric furnace base to obtain molten copper liquid, and the molten copper liquid is passed into the insulation furnace, and the cooling jacket and traction mechanism in the insulation furnace are used to prepare oxygen-free copper. The requirement for oxygen-free copper is mainly to isolate oxygen in the air. By laying charcoal in the smelting furnace, the upper charcoal absorbs and isolates oxygen in the external air. However, when After the electrolytic copper input internally is melted and reduced, it is usually necessary to replenish the electrolytic copper. However, the current feeding method requires to push away the upper charcoal layer and feed the material. However, when the charcoal layer is actually pushed away, the charcoal layer in the smelting furnace is greatly stirred, causing the charcoal to break, increasing the total amount of charcoal mixed in the copper solution, and thus increasing the actual filtration amount required when entering the holding furnace. While increasing the filtration load, the filtration effect is reduced, causing the impurity content of the copper solution entering the holding furnace to increase, which actually reduces the quality of oxygen-free copper preparation and has a poor use effect. In addition, in the use of the existing upward-drawing oxygen-free copper smelting equipment, a charcoal layer is usually laid on the upper layer of the electrolytic copper, and the top charcoal layer is used to block the upper air, reduce the entry of oxygen in the air, and achieve the production of oxygen-free copper with quality standards. However, in actual production and preparation, when the solid electrolytic copper raw material is put into the smelting furnace, the solid electrolytic copper raw material itself has a certain volume, and there is a certain space when stacked on each other. The charcoal layer is laid on the upper layer as much as possible, and there is still moving air inside. In the gradual smelting process, a small amount of air will still be mixed in the copper solution, so that the copper solution is mixed with the moving amount of air and the oxygen in the air, thereby increasing the oxygen content in the copper solution. The oxygen content of oxygen-free copper in the initial stage of actual production and preparation is still relatively high. Summary of the invention

[0004] The object of the present invention is to provide an oxygen-free copper smelting device using an up-drawing method to solve the problems of the shortcomings of the prior art mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an upward-drawing oxygen-free copper smelting equipment, comprising a smelting furnace, a conical plug is fixedly installed on the bottom surface of the inner surface of the smelting furnace, a connecting curved plate is fixedly installed on the outer surface of the smelting furnace, a motor seat is fixedly installed on the end surface of the connecting curved plate, a motor is fixedly installed on the inner surface of the motor seat, a No. 1 tube is fixedly connected to the output shaft of the motor, a sleeve shaft is movably sleeved on the inner surface of the No. 1 tube, a side groove is provided on the outer surface of the sleeve shaft, a No. 1 spring is provided inside the No. 1 tube, a sleeve shaft is fixedly connected to the lower end of the No. 1 spring, a side plate is fixedly connected to the inner surface of the No. 1 tube, the outer surface of the side plate is movably sleeved on the side groove, a movable cylinder is fixedly connected to the lower end of the sleeve shaft, and the The inner surface of the movable cylinder is movably connected with the conical plug, and the top surfaces of the movable cylinder are respectively fixedly connected with a feeding cylinder and a fixed sleeve, and the inner surfaces of the feeding cylinder and the fixed sleeve are respectively movably connected with a No. 2 plug and a No. 1 plug, and a cross plate is fixedly connected between the No. 2 plug and the No. 1 plug, and a sleeve rod is fixedly connected to the top surface of the cross plate, and an inner hole is opened on the bottom surface of the sleeve shaft, and a No. 2 spring is arranged inside the inner hole, and the upper end of the sleeve rod passes through the movable cylinder and is sleeved inside the inner hole and fixedly connected to the No. 2 spring, and a fixed plate is fixedly connected to the side surface of the movable cylinder, and an air box and an air pump are respectively arranged on the top surface of the fixed plate, and an air pipe is fixedly connected between the air pump and the fixed sleeve, a baffle is fixedly installed on the inner surface of the feeding cylinder, and a control mechanism is arranged on the top of the No. 2 plug.

[0006] First embodiment: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, before smelting, electrolytic copper is put into the smelting furnace, and a charcoal layer is laid on the upper ring. Large charcoal is accumulated on the top of the upper ring, and small charcoal enters the upper gap of the electric connection tube through the top groove. The smelting furnace is started, and the internal electrolytic copper gradually becomes liquid. As the electrolytic copper is liquid and introduced into the holding furnace, the copper inside the smelting furnace decreases. When replenishing electrolytic copper, the top plate in the rotating control mechanism is moved away from the top surface of the baffle, and the added electrolytic copper is implanted into the inside of the charging tube. The air pump is started, so that the air pump passes gas through the air pipe and pushes the No. 1 plug to move downward, so that the cross plate drives the No. 2 plug to move downward. At the same time, as the cross plate moves downward, the sleeve rod on the top surface of the cross plate moves downward from the inner hole and stretches the No. 3 spring. At the same time, as the No. 2 plug moves downward, the sleeve rod on the top surface of the cross plate moves downward from the inner hole and stretches the No. 3 spring. The plug moves downward, so that the feeding cylinder opens, and the electrolytic copper falls into the interior of the movable cylinder. The air pump is turned off to reset the top plate. The rotating top plate moves to the top surface of the baffle, and the air pump is started again. As the gas enters the interior of the movable cylinder, the No. 2 spring and the No. 3 spring are stretched at the same time, and the downward movement of the cross plate is reduced, which reduces the movement of the No. 2 plug and keeps the feeding cylinder sealed. The air pump is kept to continuously feed nitrogen, and the pull rod is pulled up one end distance so that the nitrogen fed inside pushes the electrolytic copper inside the movable cylinder to move out through the gap formed between the conical plug and the movable cylinder. After adding the electrolytic copper, the pull rod is slowly released to keep the nitrogen filled to push the copper solution out of the movable cylinder, and the movable cylinder is reset to keep it sealed with the conical plug to complete the feeding.

[0007] First, nitrogen is charged into the movable cylinder by using an air pump, and the No. 2 plug inside the feeding cylinder is opened by the nitrogen, so that the electrolytic copper placed in the feeding cylinder falls into the movable cylinder, and by adjusting the control mechanism, when the air pump is restarted, the No. 3 spring and the No. 2 spring in the control mechanism are pushed at the same time, the movement amount is reduced while the sealing of the feeding cylinder is maintained, and the nitrogen introduced by the No. 3 air pump is used to fill the movable cylinder, and when the movable cylinder is pulled upward, the pressure of the introduced nitrogen is used to gradually expand the electrolytic copper solid raw material through the space between the movable cylinder and the conical plug. The charcoal is pushed out from the large gap, thereby completing the effective feeding and replenishment of the electrolytic copper. In the actual feeding process, the air pressure is directly used to push the feeding from the inside, which effectively avoids the stirring of the charcoal layer laid on the upper layer during the feeding process. The charcoal layer laid on the upper layer is reduced to be broken and dropped during the actual feeding process, thereby effectively avoiding the charcoal debris after stirring from mixing into the copper solution through the gap of the electrolytic copper, reducing the mixing amount of charcoal impurities, thereby reducing the filtration pressure of the ceramic filter in the outlet pipe, fundamentally reducing the mixing amount of charcoal impurities, and improving the preparation purity of the actual oxygen-free copper.

[0008] As a further solution of the present invention, the outer surface of the movable cylinder is fixedly connected to a mounting plate, and the top surface of the mounting plate is fixedly connected to a pull rod, and the movable cylinder is moved upward by pulling the pull rod, so that the movable cylinder and the conical plug are opened for feeding.

[0009] As a further solution of the present invention, an upper ring is fixedly sleeved on the inner surface of the smelting furnace, a top groove is opened on the top surface of the upper ring, the upper ring is sleeved on the outside of the movable cylinder, the air box and the air pump are both located above the upper ring, a connecting pipe is fixedly connected between the air box and the air pump, nitrogen is introduced into the air box, and the nitrogen does not react with the copper solution, and the nitrogen is used to provide a driving force while effectively using the nitrogen to discharge the mixed air.

[0010] As a further solution of the present invention, the control mechanism includes a fixed rod, a sleeve, a rod No. 1, an adjusting tube, a top plate, a No. 3 spring, a ring groove and a retaining ring. The fixed rod is fixedly connected to the top surface of the No. 2 plug, the sleeve is sleeved on the outside of the fixed rod, the No. 1 rod is fixedly connected to the top surface of the sleeve, the outer surface of the No. 1 rod is movably sleeved with the adjusting tube, the top surface of the adjusting tube is fixedly connected to the top plate, the No. 3 spring is fixedly connected to the inside of the sleeve, and the lower end of the No. 3 spring is fixedly connected to the fixed rod.

[0011] As a further solution of the present invention, the annular groove is provided on the outer surface of the No. 1 rod, the clamping ring is fixedly sleeved inside the adjusting tube, the outer surface of the clamping ring is movably sleeved with the annular groove, and by utilizing the movable sleeve of the clamping ring and the annular groove, when the top plate is pulled to rotate, the adjusting tube can rotate freely, thereby ensuring convenient control of the position of the top plate and the baffle, and realizing limit control.

[0012] As a further solution of the present invention, the outer surface of the movable cylinder is fixedly connected to an exhaust mechanism, and the top surface of the exhaust mechanism is provided with a stirring rod.

[0013] Second embodiment: Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, after the first electrolytic copper is fed in, the top plate of the control mechanism is kept on the top surface of the baffle, and the air pump is started, so that the air pump pushes the No. 1 plug with nitrogen, and stretches the No. 2 spring and the No. 3 spring at the same time, keeping the No. 2 plug sealed. As the nitrogen is continuously fed in, the nitrogen in the movable cylinder enters the connecting plate of the exhaust mechanism through the connecting plate, and the nitrogen entering the connecting plate pushes the sealing rod. As the No. 4 spring stretches, the exhaust holes on the outer surface of the exhaust pipe are discharged into the interior of the smelting furnace, so that the interstitial air in the electrolytic copper is discharged to the inner part of the smelting furnace. Blow outward and upward, as the electrolytic copper at the bottom gradually melts, the continuously blown nitrogen mixes with the internal gas in the copper solution to form bubbles, and as the bubbles move to the top of the copper solution and burst, the nitrogen is fed to discharge the air mixed in the copper solution. When ventilation is performed, the motor is started to drive the No. 1 tube to rotate, thereby driving the No. 1 tube to drive the sleeve shaft of the ferrule to rotate, and then the movable cylinder drives the exhaust mechanism on the outer surface and the stirring rod to rotate, so that the nitrogen rotates and enters the copper solution, and the stirring rod stably stirs the internal copper solution.

[0014] Firstly, an exhaust mechanism is added to the outer surface of the movable cylinder, and nitrogen is continuously filled into the movable cylinder by using an air pump, so that the nitrogen introduced into the exhaust mechanism pushes the sealing rod on the exhaust pipe to move upward, so that the nitrogen introduced into the connecting plate in the exhaust mechanism is discharged into the copper solution from the exhaust hole on the outer surface of the exhaust pipe, and the movable cylinder is driven to rotate by a motor, so that the nitrogen introduced is evenly fed into the internal copper solution, and the non-reactive nitrogen is used to be discharged upward in the copper solution, so that the air component in the copper solution forms gas phase bubbles, which are broken on the top layer of the copper solution, and the thrust of the nitrogen flowing upward is used to bring out all the air of the broken bubbles, thereby reducing the small amount of air mixed in the copper solution, thereby greatly improving the actual deoxygenation effect, reducing the oxygen content in the preparation process of oxygen-free copper, and improving the quality of oxygen-free copper actually produced.

[0015] In addition, by utilizing a motor to drive the movable cylinder to rotate, the rotation of multiple exhaust mechanisms is realized. At the same time, while improving the uniformity of the actual nitrogen introduction, a stirring rod is added to the top of the exhaust mechanism, so that the stirring rod cooperates with the connecting plate to stir in the copper solution, thereby improving the uniformity of the downward movement and melting of the electrolytic copper, thereby improving the actual melting efficiency of the electrolytic copper, and improving the production efficiency of preparing oxygen-free copper, with good use effect.

[0016] As a further solution of the present invention, the exhaust mechanism includes a connecting plate, a through hole, an exhaust pipe, a fixing ring, a No. 4 spring, a sealing rod and an exhaust hole, the connecting plate is fixedly connected to the movable cylinder, the through hole is opened inside the connecting plate, the exhaust pipe is fixedly connected on the top surface of the connecting plate, the sealing rod is movably sleeved inside the exhaust pipe, the fixing ring is fixedly sleeved on the inner surface of the exhaust pipe, the No. 4 spring is fixedly connected between the sealing rod and the fixing ring, and the exhaust hole is opened on the outer surface of the exhaust pipe.

[0017] As a further solution of the present invention, the number of the exhaust mechanisms is four, and the four exhaust mechanisms are distributed in a ring shape with equal intervals on the outer surface of the movable cylinder. The movable cylinder is driven to rotate by a motor so that multiple groups of exhaust mechanisms rotate, thereby improving the uniformity of nitrogen introduction and further improving the exhaust effect.

[0018] As a further solution of the present invention, a guide pipe is fixedly connected to the side of the smelting furnace, a heat preservation furnace is provided on the end face of the guide pipe, a ceramic filter is provided inside the guide pipe, the ceramic filter and the guide pipe are both existing mechanisms, which function to guide the molten copper solution into the heat preservation furnace, and the ceramic filter is used to filter the mixed charcoal to reduce the entry of impurities.

[0019] As a further solution of the present invention, a traction mechanism is provided on the top surface of the insulation furnace, and a graphite mold and a cooling jacket are provided on the bottom surface of the traction mechanism respectively. The graphite mold cooperates with the cooling jacket so that the oxygen-free copper solution forms the shape of an oxygen-free copper rod in the graphite mold, and the formed oxygen-free copper rod is pulled out in cooperation with the traction mechanism.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention uses an air pump to fill nitrogen into the movable cylinder, uses nitrogen to open the No. 2 plug inside the feeding cylinder, so that the electrolytic copper placed in the feeding cylinder falls into the movable cylinder, and by adjusting the control mechanism, when the air pump is restarted, the No. 3 spring and the No. 2 spring in the control mechanism are pushed at the same time, reducing the movement while maintaining the sealing of the feeding cylinder, and the nitrogen introduced by the No. 3 air pump is used to fill the movable cylinder, and when the movable cylinder is pulled upward, the pressure of the introduced nitrogen is used to gradually push the electrolytic copper solid raw material through the space between the movable cylinder and the conical plug. The charcoal is pushed out from the enlarged gap, thereby completing the effective feeding and replenishment of the electrolytic copper. In the actual feeding process, the air pressure is directly used to push the feeding from the inside, which effectively avoids the stirring of the charcoal layer laid on the upper layer during the feeding process. The charcoal layer laid on the upper layer is reduced to be broken and dropped during the actual feeding process, thereby effectively avoiding the charcoal debris after stirring from mixing into the copper solution through the gap of the electrolytic copper, reducing the mixing amount of charcoal impurities, thereby reducing the filtration pressure of the ceramic filter in the outlet pipe, fundamentally reducing the mixing amount of charcoal impurities, and improving the actual preparation purity of oxygen-free copper.

[0022] 2. The present invention adds an exhaust mechanism on the outer surface of the movable cylinder, and uses an air pump to continuously fill nitrogen into the movable cylinder, so that the nitrogen introduced into the exhaust mechanism pushes the sealing rod on the exhaust pipe to move upward, so that the nitrogen introduced into the connecting plate in the exhaust mechanism is discharged into the copper solution from the exhaust hole on the outer surface of the exhaust pipe, and the movable cylinder is driven to rotate by a motor, so that the nitrogen introduced is evenly fed into the internal copper solution, and the unreactive nitrogen is used to be discharged upward in the copper solution, so that the air components in the copper solution form gas phase bubbles, and burst on the top layer of the copper solution, and the thrust of the upwardly flowing nitrogen is used to bring out all the air of the broken bubbles, thereby reducing the small amount of air mixed in the copper solution, thereby greatly improving the actual deoxygenation effect, reducing the oxygen content in the preparation process of oxygen-free copper, and improving the quality of oxygen-free copper actually produced. 3. The present invention utilizes a motor to drive the movable cylinder to rotate, realizes the rotation of multiple exhaust mechanisms, and at the same time, improves the uniformity of the actual nitrogen introduction effect. In combination with a stirring rod added to the top of the exhaust mechanism, the stirring rod cooperates with the connecting plate to stir in the copper solution, thereby improving the uniformity of the downward movement and melting of the electrolytic copper, thereby improving the actual melting efficiency of the electrolytic copper, and improving the production efficiency of preparing oxygen-free copper, with good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a cross-sectional schematic diagram of the smelting furnace of the present invention;

[0025] Figure 3 It is a schematic diagram of the explosion between the No. 1 pipe and the sleeve shaft of the present invention;

[0026] Figure 4 It is an exploded schematic diagram of the control mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the movable cylinder of the present invention;

[0028] Figure 6 It is a schematic diagram of the feeding cylinder of the present invention;

[0029] Figure 7 It is an explosion schematic diagram of the exhaust mechanism of the present invention;

[0030] Figure 8 It is a cross-sectional schematic diagram of the holding furnace of the present invention.

[0031] In the figure: 1, melting furnace; 2, conical plug; 3, upper ring; 4, connecting curved plate; 5, motor seat; 6, motor; 7, No. 1 pipe; 8, sleeve shaft; 9, No. 1 spring; 10, side groove; 11, side plate; 12, movable cylinder; 13, feeding cylinder; 14, baffle; 15, fixed sleeve; 16, inner hole; 17, sleeve rod; 18, No. 2 spring; 19, cross plate; 20, No. 1 plug; 21, No. 2 plug; 22, control mechanism; 221, fixed rod; 222, sleeve; 223, No. 1 rod; 224, regulating pipe; 225, Top plate; 226, spring No. 3; 227, ring groove; 228, retaining ring; 23, fixing plate; 24, air box; 25, air pump; 26, air pipe; 27, mounting plate; 28, pull rod; 29, exhaust mechanism; 291, connecting plate; 292, through hole; 293, exhaust pipe; 294, fixing ring; 295, spring No. 4; 296, sealing rod; 297, exhaust hole; 30, stirring rod; 31, outlet pipe; 32, insulation furnace; 33, traction mechanism; 34, top groove; 35, graphite mold; 36, cooling jacket. DETAILED DESCRIPTION

[0032] See also Figure 1-8The present invention provides a technical solution: an upward-drawing oxygen-free copper smelting equipment, comprising a smelting furnace 1, a conical plug 2 is fixedly installed on the bottom surface of the inner surface of the smelting furnace 1, a connecting curved plate 4 is fixedly installed on the outer surface of the smelting furnace 1, a motor seat 5 is fixedly installed on the end surface of the connecting curved plate 4, a motor 6 is fixedly installed on the inner surface of the motor seat 5, a No. 1 tube 7 is fixedly connected to the output shaft of the motor 6, a sleeve shaft 8 is movably sleeved on the inner surface of the No. 1 tube 7, a side groove 10 is provided on the outer surface of the sleeve shaft 8, a No. 1 spring 9 is provided inside the No. 1 tube 7, and the lower end of the No. 1 spring 9 is fixedly connected to the sleeve shaft 8, by utilizing the movably sleeved connection of the side groove 10 and the side plate 11, the No. 1 tube 7 can drive the sleeve shaft 8 to rotate, and cooperate with the No. 1 spring 9 to realize the up and down movement of the sleeve shaft 8 at the same time in the shutdown state, thereby ensuring that the movable cylinder 12 can move up and open, the inner surface of the No. 1 tube 7 is fixedly connected to the side plate 11, and the outer surface of the side plate 11 is movably sleeved with the side groove 10, The lower end of the sleeve shaft 8 is fixedly connected with a movable cylinder 12, the inner surface of the movable cylinder 12 is movably connected with the conical plug 2, the top surface of the movable cylinder 12 is respectively fixedly connected with a feeding cylinder 13 and a fixed sleeve 15, the inner surfaces of the feeding cylinder 13 and the fixed sleeve 15 are respectively movably connected with a second plug 21 and a first plug 20, a horizontal plate 19 is fixedly connected between the second plug 21 and the first plug 20, the top surface of the horizontal plate 19 is fixedly connected with a sleeve rod 17, the bottom surface of the sleeve shaft 8 is provided with an inner hole 16, the inner A No. 2 spring 18 is provided inside the hole 16, the upper end of the sleeve rod 17 passes through the movable cylinder 12 and is sleeved inside the inner hole 16 and fixedly connected to the No. 2 spring 18, a fixed plate 23 is fixedly connected to the side of the movable cylinder 12, an air box 24 and an air pump 25 are respectively provided on the top surface of the fixed plate 23, an air pipe 26 is fixedly connected between the air pump 25 and the fixed sleeve 15, a baffle 14 is fixedly installed on the inner surface of the feeding cylinder 13, and a control mechanism 22 is provided on the top of the No. 2 plug 21.

[0033] First embodiment: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, before smelting, electrolytic copper is put into the smelting furnace 1, and a charcoal layer is laid on the upper ring 3. Large charcoal is accumulated on the top of the upper ring 3, and small charcoal enters the upper gap of the electric connection tube through the top groove 34. The smelting furnace 1 is started, and the internal electrolytic copper gradually becomes liquid. As the electrolytic copper is liquid and introduced into the insulation furnace 32, the copper inside the smelting furnace 1 is reduced. When replenishing electrolytic copper, the top plate 225 in the rotating control mechanism 22 is moved away from the top surface of the baffle 14, and the added electrolytic copper is implanted into the inside of the charging tube 13. The air pump 25 is started, so that the air pump 25 passes gas through the air pipe 26 and pushes the No. 1 plug 20 to move downward, so that the cross plate 19 drives the No. 2 plug 21 to move downward. At the same time, as the cross plate 19 moves downward, the sleeve rod 17 on the top surface of the cross plate 19 moves downward from the inner hole 16 and stretches the No. 3 spring 226. At the same time, as the No. 2 plug 21 moves downward, so that the feeding cylinder 13 opens, and the electrolytic copper falls into the interior of the movable cylinder 12, and the air pump 25 is turned off to reset the top plate 225. The rotating top plate 225 moves to the top surface of the baffle 14, and the air pump 25 is started again. As the gas enters the interior of the movable cylinder 12, the No. 2 spring 18 and the No. 3 spring 226 are stretched at the same time, and the downward movement of the cross plate 19 is reduced, so that the movement of the No. 2 plug 21 is reduced, and the feeding cylinder 13 is kept sealed. The air pump 25 is kept to continuously feed nitrogen, and the pull rod 28 is pulled up one end distance, so that the nitrogen fed inside pushes the electrolytic copper inside the movable cylinder 12 to move out through the gap formed between the conical plug 2 and the movable cylinder 12. After the electrolytic copper is added, the pull rod 28 is slowly released to keep the nitrogen filled to push the copper solution out of the movable cylinder 12, and the movable cylinder 12 is reset to keep it sealed with the conical plug 2 to complete the feeding.

[0034] First, nitrogen is charged into the movable cylinder 12 by using the air pump 25, and the No. 2 plug 21 inside the feeding cylinder 13 is opened by the nitrogen, so that the electrolytic copper placed in the feeding cylinder 13 falls into the movable cylinder 12, and by adjusting the control mechanism 22, when the air pump 25 is restarted, the No. 3 spring 226 and the No. 2 spring 18 in the control mechanism 22 are pushed at the same time, the movement amount is reduced while the sealing of the feeding cylinder 13 is maintained, and the movable cylinder 12 is filled with nitrogen introduced by the No. 3 air pump 25, and when the movable cylinder 12 is pulled upward, the pressure of the introduced nitrogen is used to push the fed electrolytic copper solid raw material The copper is pushed out through the gradually expanding gap between the movable cylinder 12 and the conical plug 2, thereby completing the effective feeding and replenishment of the electrolytic copper. In the actual feeding process, the air pressure is directly used to push the feeding from the inside, thereby effectively avoiding the stirring of the charcoal layer laid on the upper layer during the feeding process, and reducing the breakage and falling of the charcoal layer laid on the upper layer during the actual feeding process, thereby effectively avoiding the stirring of charcoal fragments into the copper solution through the gap of the electrolytic copper, reducing the mixing amount of charcoal impurities, thereby reducing the filtration pressure of the ceramic filter in the outlet pipe, fundamentally reducing the mixing amount of charcoal impurities, and improving the actual preparation purity of oxygen-free copper.

[0035] The outer surface of the movable cylinder 12 is fixedly connected with a mounting plate 27, and the top surface of the mounting plate 27 is fixedly connected with a pull rod 28. The movable cylinder 12 is moved upward by pulling the pull rod 28, so that the movable cylinder 12 and the conical plug 2 are opened for feeding.

[0036] Among them, the inner surface of the smelting furnace 1 is fixedly sleeved with an upper ring 3, the top surface of the upper ring 3 is provided with a top groove 34, the upper ring 3 is sleeved on the outside of the movable cylinder 12, the air box 24 and the air pump 25 are both located above the upper ring 3, and a connecting pipe is fixedly connected between the air box 24 and the air pump 25. Nitrogen is introduced into the air box 24, and the nitrogen does not react with the copper solution. While the nitrogen is used to provide a driving force, the nitrogen is effectively used to discharge the mixed air.

[0037] Among them, the control mechanism 22 includes a fixed rod 221, a sleeve 222, a No. 1 rod 223, an adjusting tube 224, a top plate 225, a No. 3 spring 226, an annular groove 227 and a retaining ring 228. The fixed rod 221 is fixedly connected to the top surface of the No. 2 plug 21, the sleeve 222 is sleeved on the outside of the fixed rod 221, the No. 1 rod 223 is fixedly connected to the top surface of the sleeve 222, the outer surface of the No. 1 rod 223 is movably sleeved with the adjusting tube 224, the top surface of the adjusting tube 224 is fixedly connected to the top plate 225, the No. 3 spring 226 is fixedly connected to the inside of the sleeve 222, and the lower end of the No. 3 spring 226 is fixedly connected to the fixed rod 221.

[0038] Among them, the annular groove 227 is opened on the outer surface of the No. 1 rod 223, the retaining ring 228 is fixedly sleeved inside the adjusting tube 224, and the outer surface of the retaining ring 228 is movably sleeved with the annular groove 227. By utilizing the movably sleeved connection between the retaining ring 228 and the annular groove 227, when the top plate 225 is pulled to rotate, the adjusting tube 224 can rotate freely, thereby ensuring convenient control of the position of the top plate 225 and the baffle 14 and realizing limit control.

[0039] The outer surface of the movable cylinder 12 is fixedly connected to an exhaust mechanism 29 , and a stirring rod 30 is disposed on the top surface of the exhaust mechanism 29 .

[0040] Second embodiment: Figure 1 , Figure 2 , Figure 5 and Figure 7As shown, after the first electrolytic copper is fed, the top plate 225 on the top of the control mechanism 22 is kept located on the top surface of the baffle 14, and the air pump 25 is started, so that the air pump 25 pushes the nitrogen to open the No. 1 plug 20, and the No. 2 spring 18 and the No. 3 spring 226 are stretched at the same time, and the No. 2 plug 21 is kept sealed. As the nitrogen is continuously fed, the nitrogen in the movable cylinder 12 enters the connecting plate 291 of the exhaust mechanism 29 through, and the nitrogen entering the connecting plate 291 pushes the sealing rod 296. As the No. 4 spring 295 is stretched, the exhaust hole 297 on the outer surface of the exhaust pipe 293 is discharged into the smelting furnace 1. The inside of the electrolytic copper is blown outward and upward, and as the bottom electrolytic copper gradually melts, the continuously blown nitrogen is mixed with the internal gas in the copper solution to form bubbles. As the bubbles move to the top of the copper solution and burst, the nitrogen is fed to discharge the air mixed in the copper solution. When ventilation is performed, the motor 6 is started, so that the motor 6 drives the No. 1 pipe 7 to rotate, so that the No. 1 pipe 7 drives the sleeve shaft 8 of the ferrule to rotate, and then the movable cylinder 12 drives the exhaust mechanism 29 on the outer surface and the stirring rod 30 to rotate, so that the nitrogen rotates and enters the copper solution, and the stirring rod 30 stably stirs the internal copper solution.

[0041] First, an exhaust mechanism 29 is added to the outer surface of the movable cylinder 12, and nitrogen is continuously filled into the movable cylinder 12 by using an air pump 25, so that the nitrogen introduced into the exhaust mechanism 29 pushes the sealing rod 296 on the exhaust pipe 293 to move upward, so that the nitrogen introduced into the connecting plate 291 in the exhaust mechanism 29 is discharged into the copper solution from the exhaust hole 297 on the outer surface of the exhaust pipe 293, and the motor 6 is used to drive the movable cylinder 12 to rotate, so that the nitrogen introduced is evenly fed into the internal copper solution, and the non-reactive nitrogen is used to be discharged upward in the copper solution, so that the air components in the copper solution form gas phase bubbles, and burst on the top layer of the copper solution, and the upward nitrogen thrust is used to bring out all the air of the broken bubbles, thereby reducing the small amount of air mixed in the copper solution, thereby greatly improving the actual deoxygenation effect, reducing the oxygen content in the preparation process of oxygen-free copper, and improving the quality of oxygen-free copper actually produced.

[0042] In addition, by utilizing the motor 6 to drive the movable cylinder 12 to rotate, the multiple exhaust mechanisms 29 are rotated. At the same time, while improving the uniformity of the actual nitrogen introduction, the stirring rod 30 added to the top of the exhaust mechanism 29 is used to make the stirring rod 30 cooperate with the connecting plate 291 to stir in the copper solution, thereby improving the uniformity of the downward movement and melting of the electrolytic copper, thereby improving the actual melting efficiency of the electrolytic copper, and improving the production efficiency of preparing oxygen-free copper, with good use effect.

[0043] Among them, the exhaust mechanism 29 includes a connecting plate 291, a through hole 292, an exhaust pipe 293, a fixing ring 294, a No. 4 spring 295, a sealing rod 296 and an exhaust hole 297. The connecting plate 291 is fixedly connected to the movable cylinder 12, the through hole 292 is opened inside the connecting plate 291, the exhaust pipe 293 is fixedly connected on the top surface of the connecting plate 291, the sealing rod 296 is movably sleeved inside the exhaust pipe 293, the fixing ring 294 is fixedly sleeved on the inner surface of the exhaust pipe 293, the No. 4 spring 295 is fixedly connected between the sealing rod 296 and the fixing ring 294, and the exhaust hole 297 is opened on the outer surface of the exhaust pipe 293.

[0044] Among them, the number of exhaust mechanisms 29 is four, and the four exhaust mechanisms 29 are distributed in a ring with equal spacing on the outer surface of the movable cylinder 12. The motor 6 drives the movable cylinder 12 to rotate, so that multiple groups of exhaust mechanisms 29 rotate, thereby improving the uniformity of nitrogen introduction and further improving the exhaust effect.

[0045] Among them, the side of the smelting furnace 1 is fixedly connected with a guide pipe 31, the end face of the guide pipe 31 is provided with a heat preservation furnace 32, and the inside of the guide pipe 31 is provided with a ceramic filter. The ceramic filter and the guide pipe 31 are both existing mechanisms, which are used to guide the molten copper solution into the heat preservation furnace 32, and the ceramic filter is used to filter the mixed charcoal to reduce the entry of impurities.

[0046] Among them, the top surface of the insulation furnace 32 is provided with a traction mechanism 33, and the bottom surface of the traction mechanism 33 is respectively provided with a graphite mold 35 and a cooling jacket 36. The graphite mold 35 cooperates with the cooling jacket 36 to make the oxygen-free copper solution form the shape of an oxygen-free copper rod in the graphite mold 35, and cooperates with the traction mechanism 33 to pull out the formed oxygen-free copper rod.

Claims

1. An oxygen-free copper smelting device using an upward-drawing method, comprising a smelting furnace (1), characterized in that: A conical plug (2) is fixedly mounted on the bottom surface of the inner surface of the smelting furnace (1), a connecting curved plate (4) is fixedly mounted on the outer surface of the smelting furnace (1), a motor seat (5) is fixedly mounted on the end surface of the connecting curved plate (4), a motor (6) is fixedly mounted on the inner surface of the motor seat (5), a No. 1 pipe (7) is fixedly connected to the output shaft of the motor (6), a sleeve shaft (8) is movably sleeved on the inner surface of the No. 1 pipe (7), and a side groove (10) is provided on the outer surface of the sleeve shaft (8), A No. 1 spring (9) is provided inside the No. 1 tube (7), the lower end of the No. 1 spring (9) is fixedly connected to a sleeve shaft (8), the inner surface of the No. 1 tube (7) is fixedly connected to a side plate (11), the outer surface of the side plate (11) is movably sleeved with the side groove (10), the lower end of the sleeve shaft (8) is fixedly connected to a movable cylinder (12), the inner surface of the movable cylinder (12) is movably sleeved with the conical plug (2), and the top surface of the movable cylinder (12) is fixedly connected to a feeding cylinder (13) and a feeding cylinder (14). ) and a fixed sleeve (15), the inner surfaces of the feeding cylinder (13) and the fixed sleeve (15) are respectively movably sleeved with a second plug (21) and a first plug (20), a transverse plate (19) is fixedly connected between the second plug (21) and the first plug (20), a sleeve rod (17) is fixedly connected to the top surface of the transverse plate (19), an inner hole (16) is formed on the bottom surface of the sleeve shaft (8), a second spring (18) is provided inside the inner hole (16), the upper end of the sleeve rod (17) passes through the movable The cylinder (12) is sleeved inside the inner hole (16) and fixedly connected to the second spring (18); a fixed plate (23) is fixedly connected to the side of the movable cylinder (12); an air box (24) and an air pump (25) are respectively provided on the top surface of the fixed plate (23); an air pipe (26) is fixedly connected between the air pump (25) and the fixed sleeve (15); a baffle (14) is fixedly installed on the inner surface of the feeding cylinder (13); and a control mechanism (22) is provided on the top of the second plug (21); The control mechanism (22) comprises a fixed rod (221), a sleeve (222), a No. 1 rod (223), an adjusting tube (224), a top plate (225), a No. 3 spring (226), an annular groove (227) and a snap ring (228); the fixed rod (221) is fixedly connected to the top surface of the No. 2 plug (21); the sleeve (222) is sleeved on the outside of the fixed rod (221); the No. 1 rod (223) is fixedly connected to the top surface of the sleeve (222); the outer surface of the No. 1 rod (223) is movably sleeved with the adjusting tube (224); the top surface of the adjusting tube (224) is fixedly connected to the top plate (225); the No. 3 spring (226) is fixedly connected to the inside of the sleeve (222); and the lower end of the No. 3 spring (226) is fixedly connected to the fixed rod (221); The annular groove (227) is formed on the outer surface of the No. 1 rod (223); the clamping ring (228) is fixedly sleeved inside the adjusting tube (224); and the outer surface of the clamping ring (228) is movably sleeved with the annular groove (227); The outer surface of the movable cylinder (12) is fixedly connected to an exhaust mechanism (29), and the top surface of the exhaust mechanism (29) is provided with a stirring rod (30).

2. The oxygen-free copper smelting equipment according to claim 1, characterized in that: The outer surface of the movable cylinder (12) is fixedly connected to a mounting plate (27), and the top surface of the mounting plate (27) is fixedly connected to a pull rod (28).

3. The up-drawing oxygen-free copper smelting equipment according to claim 1, characterized in that: An upper ring (3) is fixedly sleeved on the inner surface of the smelting furnace (1), a top groove (34) is opened on the top surface of the upper ring (3), the upper ring (3) is sleeved on the outer side of the movable cylinder (12), the air box (24) and the air pump (25) are both located above the upper ring (3), and a connecting pipe is fixedly connected between the air box (24) and the air pump (25).

4. The oxygen-free copper smelting equipment according to claim 1, characterized in that: The exhaust mechanism (29) comprises a connecting plate (291), a through hole (292), an exhaust pipe (293), a fixing ring (294), a No. 4 spring (295), a sealing rod (296) and an exhaust hole (297); the connecting plate (291) is fixedly connected to the movable cylinder (12); the through hole (292) is provided inside the connecting plate (291); the exhaust pipe (293) is fixedly connected to the top surface of the connecting plate (291); the sealing rod (296) is movably sleeved inside the exhaust pipe (293); the fixing ring (294) is fixedly sleeved on the inner surface of the exhaust pipe (293); the No. 4 spring (295) is fixedly connected between the sealing rod (296) and the fixing ring (294); and the exhaust hole (297) is provided on the outer surface of the exhaust pipe (293).

5. The up-drawing oxygen-free copper smelting equipment according to claim 4, characterized in that: The number of the exhaust mechanisms (29) is four, and the four exhaust mechanisms (29) are distributed in an annular manner at equal intervals on the outer surface of the movable cylinder (12).

6. The oxygen-free copper smelting equipment according to claim 1, characterized in that: A side of the smelting furnace (1) is fixedly connected to a guide pipe (31), an end surface of the guide pipe (31) is provided with a heat preservation furnace (32), and a ceramic filter is provided inside the guide pipe (31).

7. The oxygen-free copper smelting equipment according to claim 6, characterized in that: The top surface of the heat-insulating furnace (32) is provided with a traction mechanism (33), and the bottom surface of the traction mechanism (33) is respectively provided with a graphite mold (35) and a cooling jacket (36).

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