A medium frequency induction heating metal refining control system

Abstract

The present application discloses a medium frequency induction heating metal refining control system, which belongs to the technical field of metal refining. The present application is provided with a crucible, which can be sealed, a jet assembly is provided at the bottom of the crucible, and an induction coil is provided on the outer surface of the crucible. The electromagnetic effect of the electric current is used to directly heat the metal powder in the crucible. The jet assembly can introduce inert gas into the crucible to prevent the surface of the metal liquid from being oxidized. The crucible is also provided with an automatic scooping structure for metal impurities. The impurities in the refined metal liquid are scooped out of the crucible through the scooping structure, which saves labor, reduces the occurrence of production accidents, shortens the heating time, and improves the metal refining effect.

Description

Technical Field

[0001] The invention is a medium frequency induction heating metal refining control system, belonging to the technical field of metal refining. Background Art

[0002] At present, the main equipment for metal refining and purification is a pit-type resistance heating furnace. The refining crucible is placed in the pit-type furnace. After the heating electric furnace wire is energized, the heat is naturally conducted from the air to the outer wall of the refining crucible to achieve the purpose of heating the metal. The refining furnace temperature is measured by an inserted thermocouple and transmitted to the temperature control cabinet for controllable silicon to control the furnace temperature. Since the heat is naturally conducted to the outer wall of the refining crucible through the air, the heat conduction is slow, and the control sometimes has a lag problem. In addition, the existing refining crucible loading port is exposed to the air environment, and the inner surface of the crucible is often exposed to air and oxidized, which affects the effect of metal refining. The operator also needs to manually remove impurities on the surface, which increases the danger of the operator at work. Therefore, some technicians in this field have developed a medium-frequency induction heating metal refining control system to overcome the problems in the above-mentioned background technology. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a medium-frequency induction heating metal refining control system in view of the above shortcomings. The outer surface of the metal refining crucible of the present invention is provided with an induction coil, and a medium-frequency induction current is passed through the induction coil to heat the metal powder in the crucible. The interior of the crucible is closed and filled with inert gas. The crucible is also provided with an automatic impurity scooping structure after metal refining, which shortens the metal refining heating time, improves the metal refining effect, and reduces the occurrence of production accidents.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A medium frequency induction heating metal refining control system comprises a crucible, an induction coil is arranged on the outer surface of the crucible, a rotating motor is arranged below the induction coil, a driving shaft of the rotating motor extends into the bottom of the crucible, and an air injection assembly is also arranged at the bottom of the crucible;

[0006] The crucible is also provided with a conical net, the surface of which is evenly distributed with grooves, a pot cover is also provided above the crucible, a sealing door is provided between the two, and a reciprocating component is also provided above the pot cover;

[0007] A spiral pipe is fixedly connected to one side of the pot cover, a powder bin is connected above the spiral pipe, and a feeding motor is fixedly connected to the end of the spiral pipe.

[0008] Furthermore, the jet assembly includes two sliding rods, which are opposite to each other and fixed to the inner wall of the bottom of the crucible. A sliding block is provided on the surface of the sliding rod, rollers are provided on both sides below the sliding block, a connecting rod is connected between the two, a rotating body is provided between the rollers, the rotating body is fan-shaped, and a rotating motor drive shaft is fixed below the rotating body.

[0009] Furthermore, the jet assembly also includes gear A and gear B, the centers of the two are connected by a connecting rotating shaft, an eccentric rotating shaft A is provided on one side of the lower surface of gear A, and the lower part of the eccentric rotating shaft A is fixedly connected to the inner wall of the crucible through a connecting rod, and an eccentric rotating shaft B is provided on one side of the lower surface of gear B, and the lower part of the eccentric rotating shaft B is fixedly connected to the upper surface of the slider, gear A can perform eccentric rotational movement around the eccentric rotating shaft A, and gear B can perform eccentric rotational movement around the eccentric rotating shaft B, and nozzles are evenly fixedly connected to the upper surfaces of gears A and B.

[0010] Furthermore, the sealing door is divided into two symmetrical parts. A lifting rack is fixedly connected to the upper surface of the conical net. The lifting rack runs through the sealing door and the pot cover. A sealing cylinder is also fixedly connected to the side of the sealing door. An ultrasonic sensor is also provided at the bottom end of the crucible.

[0011] Furthermore, claws are evenly fixed on the inner wall of the upper part of the pot cover, a claw rotating shaft is provided between the two, a torsion spring is provided in the claw rotating shaft, the claws are in an angle shape, the claws correspond one to one with the grooves on the surface of the conical net, and can extend into the grooves on the surface of the conical net, and a receiving notch is also provided on one side of the pot cover.

[0012] Furthermore, the reciprocating component includes a driving gear and a driving motor. The driving gear and the lifting rack are meshed with each other through teeth. A first rotating shaft is provided on one side of the surface of the driving gear. A connecting rod is connected between the end of the driving shaft of the driving motor and the first rotating shaft, and a second rotating shaft is also provided on the connecting rod.

[0013] Furthermore, the reciprocating assembly also includes a linking gear and a slide rail. The linking gear and the driving gear are meshed with each other through teeth. The slide rail is located below the linking gear, and a slide plate is embedded in the slide rail.

[0014] Furthermore, the surface of the slide plate is distributed with tooth patterns, and is meshed with the connecting gear through teeth. An ash hopper is fixedly connected to the end of the slide plate, and the ash hopper is located just on one side of the receiving notch.

[0015] Furthermore, temperature sensors are provided on both sides of the inner wall of the middle part of the crucible, a drainage pipe is provided at the bottom end of the crucible, and a drainage valve is provided on the drainage pipe.

[0016] Furthermore, it also includes a central controller, which is connected to an input part and an output part. The central controller is used to receive data detected by the input part and send operating instructions to the output part to realize the automatic operation of various parts in this medium frequency induction heating metal refining control system. The central controller is also connected to a display screen, which is used to display the operating status and parameters of this medium frequency induction heating metal refining control system.

[0017] The present invention adopts the above technical solution, and has the following technical effects compared with the prior art:

[0018] 1. The present invention is provided with a crucible, which can be sealed, a jet assembly is provided at the bottom of the crucible, an induction coil is provided on the outer surface of the crucible, a medium-frequency induction current is passed through the induction coil, and the metal powder in the crucible is directly heated by the electromagnetic effect of the current. The jet assembly can pass an inert gas into the crucible to prevent the surface of the metal liquid from being oxidized, thereby shortening the heating time and improving the metal refining effect.

[0019] 2. The present invention is provided with an automatic scooping structure for metal impurities. After the metal is refined in the crucible, the impurities floating on the surface of the molten metal are scooped out of the crucible through the scooping structure, which saves labor and reduces the occurrence of production accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale and orientation.

[0021] Figure 1 It is a schematic diagram of the structural connection of the present invention;

[0022] Figure 2 It is a schematic diagram of the connection structure of the crucible and the gas injection assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection between the A gear, the B gear and the sliding rod structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection between the roller and the rotating body structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection between the pot cover and the reciprocating assembly structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the electrical network connection principle of the central controller of the present invention.

[0027] In the figure: 1-crucible, 2-induction coil, 3-sealed door, 4-jet assembly, 5-rotating motor, 6-drain valve, 7-conical net, 8-ultrasonic sensor, 9-door sealing cylinder, 10-pot cover, 11-spiral pipe, 12-feeding motor, 13-powder bin, 14-reciprocating assembly, 15-receiving gap, 16-claw, 17-lifting rack, 18-temperature sensor, 19-driving motor, 20-driving gear, 21-connecting gear, 22-first rotating shaft, 23-second rotating shaft, 24-slider, 25-slide rail, 26-slide plate, 27-ash hopper, 28-roller, 29-rotating body, 30-sprinkler, 31-A gear, 32-B gear, 33-A eccentric rotating shaft, 34-B eccentric rotating shaft, 35-connecting rotating shaft, 36-slide rod. DETAILED DESCRIPTION

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a medium frequency induction heating metal refining control system includes a crucible 1, an induction coil 2 is provided on the outer surface of the crucible 1, a rotating motor 5 is provided below the induction coil 2, a driving shaft of the rotating motor 5 extends into the bottom of the crucible 1, and an injection assembly 4 is also provided at the bottom of the crucible 1. The injection assembly 4 includes a slide bar 36, and the slide bar 36 has two opposite slide bars, which are fixed to the inner wall of the bottom of the crucible 1. A slider 24 is provided on the surface of the slide bar 36, and rollers 28 are provided on both sides below the slider 24, and a connecting rod is connected between the two. A rotating body 29 is provided between the rollers 28, and the rotating body 29 is fan-shaped. The driving shaft of the rotating motor 5 is fixed below the rotating body 29.

[0029] The jet assembly 4 also includes an A gear 31 and a B gear 32, the centers of which are connected by a connecting rotating shaft 35. An A eccentric rotating shaft 33 is provided on one side of the lower surface of the A gear 31, and the lower part of the A eccentric rotating shaft 33 is fixedly connected to the inner wall of the crucible 1 through a connecting rod. An B eccentric rotating shaft 34 is provided on one side of the lower surface of the B gear 32, and the lower part of the B eccentric rotating shaft 34 is fixedly connected to the upper surface of the slider 24. The A gear 31 can perform eccentric rotation around the A eccentric rotating shaft 33, and the B gear 32 can perform eccentric rotation around the B eccentric rotating shaft 34. The upper surfaces of the A gear 31 and the B gear 32 are evenly fixed with nozzles 30, and the nozzles 30 can spray inert gas. When the rotating motor 5 rotates, the rotating body 29 is driven to rotate. Since the rotating body 29 is fan-shaped and located between the two rollers 28, usually, one roller 28 is at the fan-shaped edge of the rotating body 29, and the other roller 28 is located at the rotating body 29. The two rollers 28 are switched back and forth between the fan-shaped edge and the recess of the rotating body 29 as the rotating body 29 rotates. Therefore, the rollers 28 drive the upper slider 24 to move back and forth on the surface of the slide bar 36. When the slider 24 moves to one side, due to the eccentric action of the B eccentric rotating shaft 34, the B gear 32 can rotate around the connecting rotating shaft 35 while eccentrically moving to one side. The rotation of the B gear 32 drives the A gear 31 to rotate around the connecting rotating shaft 35, and at the same time, it also moves eccentrically to one side around the A eccentric rotating shaft 33 following the B gear 32. Thus, the A gear 31 and the B gear 32 can rotate eccentrically to and fro. When the rotating motor 5 starts to rotate, the nozzle 30 sprays inert gas above the crucible 1. Relying on the rotational eccentric reciprocating motion of the A gear 31 and the B gear 32, the nozzle 30 can spray gas in all directions in the crucible 1.

[0030] like Figure 1 As shown, a conical net 7 is further provided in the crucible 1, and grooves are evenly arranged on the surface of the conical net 7. A pot cover 10 is also provided above the crucible 1, and a sealing door 3 is provided between the two. The sealing door 3 is divided into two symmetrical parts. A lifting rack 17 is fixedly connected to the upper surface of the conical net 7, and the lifting rack 17 passes through the sealing door 3 and the pot cover 10. A sealing door cylinder 9 is also fixedly connected to the side of the sealing door 3, and the sealing door cylinder 9 is used for opening and closing the sealing door 3. A spiral pipe 11 is fixedly connected to one side of the pot cover 10, and a powder bin 13 is connected to the top of the spiral pipe 11. A feeding motor 12 is fixedly connected to the end of the spiral pipe 11. Metal powder is contained in the powder bin 13, and the feeding motor 12 drives the rotation of the spiral blade to transport the metal powder to be refined into the crucible 1. An ultrasonic sensor 8 is also provided at the bottom of the crucible 1, and the ultrasonic sensor 8 is used to detect the liquid level of the metal.

[0031] The upper inner wall of the pot cover 10 is evenly fixed with claws 16, a claw rotating shaft is provided between the two, a torsion spring is provided in the claw rotating shaft, the claws 16 are in a corner shape, the claws 16 correspond to the grooves on the surface of the conical net 7 one by one, and can extend into the grooves on the surface of the conical net 7. A receiving notch 15 is also provided on one side of the pot cover 10, and a reciprocating component 14 is also provided above the pot cover 10.

[0032] like Figure 1 and Figure 5 As shown, the reciprocating assembly 14 includes a driving gear 20 and a driving motor 19. The driving gear 20 and the lifting rack 17 are meshed with each other through teeth. A first rotating shaft 22 is provided on one side of the surface of the driving gear 20. A connecting rod is connected between the end of the driving shaft of the driving motor 19 and the first rotating shaft 22, and a second rotating shaft 23 is also provided on the connecting rod.

[0033] The reciprocating assembly 14 also includes a linking gear 21 and a slide rail 25. The linking gear 21 and the driving gear 20 are meshed with each other through teeth. The slide rail 25 is located below the linking gear 21. A slide rail 26 is embedded in the slide rail 25. The surface of the slide rail 26 has teeth and is meshed with the linking gear 21 through teeth. An ash hopper 27 is fixed to the end of the slide rail 26, and the ash hopper 27 is located just on one side of the receiving gap 15.

[0034] Temperature sensors 18 are also provided on both sides of the inner wall of the middle part of the crucible 1. The temperature sensor 18 is used to detect the temperature of the metal liquid in the crucible 1. A drainage pipe is also provided at the bottom of the crucible 1, and a drainage valve 6 is also provided on the drainage pipe. When the ultrasonic sensor 8 detects that the metal powder in the crucible 1 reaches the set liquid level, the medium-frequency induction current is passed into the induction coil 2. The metal powder in the crucible 1 is heated and melted to form a liquid through the electromagnetic induction of the medium-frequency current. At the same time, the rotary motor 5 starts to rotate, the sealing cylinder 9 extends, and the sealing door 3 seals the feed port above the crucible 1. The nozzle 30 sprays inert gas bubbles to isolate the metal liquid surface from oxygen in the air to prevent the metal surface from being oxidized due to high temperature contact with oxygen. When the inert gas bubbles rise in the crucible 1, they combine with tiny impurities in the metal liquid and float upward to the surface of the metal liquid to solidify. The temperature sensor 18 is used to detect the temperature of the heated liquid and control the size of the medium-frequency induction current to maintain the temperature of the heated metal liquid at a certain value.

[0035] When the metal liquid is heated for a certain period of time, the sealing cylinder 9 retracts, the feed port above the crucible 1 is opened, and then the driving motor 19 starts to rotate. First, the driving gear 20 is driven to rotate in a certain direction through the connecting rod via the first rotating shaft 22 and the second rotating shaft 23. The driving gear 20 rotates to drive the conical net 7 to rise from the bottom of the crucible 1, and the impurities on the surface of the metal liquid fall into the groove of the conical net 7. At the same time, the driving gear 20 rotates to drive the link gear 21 to rotate, and the link gear 21 rotates to drive the slide plate 26 and the ash hopper 27 to extend into the pot cover 10 through the receiving notch 15. At this time, the surface of the conical net 7 The impurities in the groove are scraped off by the claws 16 and fall into the ash hopper 27. The connecting rod between the first rotating shaft 22 and the second rotating shaft 23 rises to the highest point driven by the connecting rod at the end of the driving shaft of the driving motor 19, and will follow the connecting rod at the end of the driving shaft of the driving motor 19 to make a circular motion in the opposite direction. The driving gear 20 and the connecting gear 21 rotate in the opposite direction, so that the lifting rack 17 moves downward, and the conical net 7 falls back to the bottom of the crucible 1, and the sealing door 3 reseals the upper inlet of the crucible 1, and the ash hopper 27 withdraws to the outside of the pot cover 10. This is repeated several times to remove impurities in the metal liquid.

[0036] When the impurities in the metal liquid are removed, the drain valve 6 is opened, and the refined metal liquid in the crucible 1 flows out of the crucible 1, and then the drain valve 6 is closed, the rotating motor 5 and the nozzle 30 are closed, and the sealing door 3 is opened to continue to receive new metal powder for refining.

[0037] like Figure 6 As shown, a medium frequency induction heating metal refining control system also includes a central controller, which is connected to an input part and an output part. The central controller is used to receive data detected by the input part and send operating instructions to the output part to realize the automatic operation of various parts in this medium frequency induction heating metal refining control system. The central controller is also connected to a display screen, which is used to display the operating status and parameters of various parts in this medium frequency induction heating metal refining control system.

[0038] The input part includes an ultrasonic sensor and a temperature sensor, and the input part is used to monitor the operating data in the medium frequency induction heating metal refining control system. The output part includes an induction coil, a rotating motor, a drain valve, a door sealing cylinder, a feeding motor, a driving motor and a nozzle. The central controller sends an operating instruction to the output part through the operating data detected by the input part to realize the automatic operation of the medium frequency induction heating metal refining control system.

[0039] The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the invention to the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the invention and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for specific uses.

Claims

1. A medium frequency induction heating metal refining control system, characterized in that: It comprises a crucible (1), an induction coil (2) is provided on the outer surface of the crucible (1), a rotating motor (5) is provided below the induction coil (2), a driving shaft of the rotating motor (5) extends into the bottom of the crucible (1), and an air injection assembly (4) is also provided at the bottom of the crucible (1); The crucible (1) is further provided with a conical net (7), the surface of which is evenly distributed with grooves; a pot cover (10) is further provided above the crucible (1), a sealing door (3) is provided between the two, and a reciprocating assembly (14) is further provided above the pot cover (10); A spiral pipe (11) is fixedly connected to one side of the pot cover (10); the upper side of the spiral pipe (11) is connected to a powder bin (13); and a feeding motor (12) is fixedly connected to the end of the spiral pipe (11); The jet assembly (4) comprises a slide bar (36), wherein the slide bars (36) are provided with two opposite slide bars (36) fixedly connected to the inner wall of the bottom of the crucible (1), a slide block (24) is provided on the surface of the slide bar (36), rollers (28) are provided on both sides below the slide block (24), a connecting rod is connected between the two, a rotating body (29) is provided between the rollers (28), the rotating body (29) is fan-shaped, and a driving shaft of a rotating motor (5) is fixedly connected below the rotating body (29); The jet assembly (4) further comprises an A gear (31) and a B gear (32), the centers of which are connected via a connecting rotating shaft (35); an A eccentric rotating shaft (33) is provided on one side of the lower surface of the A gear (31); the lower part of the A eccentric rotating shaft (33) is fixedly connected to the inner wall of the crucible (1) via a connecting rod; an B eccentric rotating shaft (34) is provided on one side of the lower surface of the B gear (32); the lower part of the B eccentric rotating shaft (34) is fixedly connected to the upper surface of the slider (24); the A gear (31) can perform eccentric rotating motion around the A eccentric rotating shaft (33); the B gear (32) can perform eccentric rotating motion around the B eccentric rotating shaft (34); and the upper surfaces of the A gear (31) and the B gear (32) are evenly fixedly connected with the jet heads (30); The reciprocating assembly (14) comprises a driving gear (20) and a driving motor (19), the driving gear (20) and the lifting rack (17) are meshed with each other via teeth, a first rotating shaft (22) is provided on one side of the surface of the driving gear (20), a connecting rod is connected between the end of the driving shaft of the driving motor (19) and the first rotating shaft (22), and a second rotating shaft (23) is also provided on the connecting rod; The reciprocating assembly (14) further comprises a linking gear (21) and a slide rail (25), wherein the linking gear (21) and the driving gear (20) are meshed with each other via teeth, the slide rail (25) is located below the linking gear (21), and a slide plate (26) is embedded in the slide rail (25); The surface of the slide plate (26) is provided with tooth patterns, and the slide plate (26) is meshed with the link gear (21) through the teeth. An ash hopper (27) is fixedly connected to the end of the slide plate (26), and the ash hopper (27) is located exactly on one side of the receiving notch (15).

2. A medium frequency induction heating metal refining control system as claimed in claim 1, characterized in that: The sealing door (3) is divided into two symmetrical parts. A lifting rack (17) is fixedly connected to the upper surface of the conical net (7). The lifting rack (17) passes through the sealing door (3) and the pot cover (10). A sealing cylinder (9) is also fixedly connected to the side of the sealing door (3). An ultrasonic sensor (8) is also provided at the bottom end of the crucible (1).

3. A medium frequency induction heating metal refining control system as claimed in claim 1, characterized in that: The upper inner wall of the pot cover (10) is evenly fixed with claws (16), a claw rotating shaft is provided between the two, a torsion spring is provided in the claw rotating shaft, the claws (16) are in an angled shape, the claws (16) correspond to the grooves on the surface of the conical net (7) one by one, and can extend into the grooves on the surface of the conical net (7), and a receiving notch (15) is also provided on one side of the pot cover (10).

4. A medium frequency induction heating metal refining control system as claimed in claim 1, characterized in that: Temperature sensors (18) are also provided on both sides of the inner wall of the middle part of the crucible (1), and a drainage pipe is also provided at the bottom end of the crucible (1), and a drainage valve (6) is also provided on the drainage pipe.

5. A medium frequency induction heating metal refining control system as claimed in claim 1, characterized in that: It also includes a central controller, which is connected to an input part and an output part. The central controller is used to receive data detected by the input part and send operating instructions to the output part to realize the automatic operation of various parts in the medium frequency induction heating metal refining control system. The central controller is also connected to a display screen, which is used to display the operating status and parameters of the medium frequency induction heating metal refining control system.

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