CN220387836U - Noble metal ingot shrinkage-hole-free vacuum fine grain casting device - Google Patents

Abstract

The utility model relates to a precious metal ingot does not have shrinkage cavity vacuum fine grain casting device, relates to the technical field of metal smelting, and it includes furnace body, cloth dish, metal hopper, high-pressure lift motor, crucible and mould, the cloth dish the metal hopper the high-pressure lift motor the crucible with the mould all is located the inner chamber of furnace body, the cloth dish with the metal hopper is arranged in proper order along vertical direction, the crucible with the furnace body rotates to be connected, just after the crucible rotates certain angle, the discharge end of metal hopper the discharge end of crucible with the mould is arranged in proper order along vertical direction; the distribution plate can quantitatively throw noble metal particles in batches, a baffle is arranged at the discharge end of the metal hopper, and the baffle is electrically connected with the high-voltage lifting motor and is rotationally connected with the metal hopper. The method has the effect of obtaining higher economic benefit and simultaneously reducing shrinkage cavity of the inner cavity of the metal ingot as much as possible.

Description

Noble metal ingot shrinkage-hole-free vacuum fine grain casting device

Technical Field

The application relates to the technical field of metal smelting, in particular to a precious metal ingot shrinkage-hole-free vacuum fine grain casting device.

Background

Noble metals include gold, silver, platinum group metals and the like, and are generally smelted by adopting a furnace body so as to obtain noble metals with higher purity, and the noble metals have wide application in modern life, including jewelry, electronic products, medicine and the like, and can provide certain help for life of people, so that the production life and the technology of people are further improved.

In the related art, in order to obtain high-quality precious metal ingots, methods generally adopted mainly include three refining methods of pyrometallurgy, hydrometallurgy and biotechnology smelting. Wherein, the pyrometallurgy is a method with higher relative economic benefit, and the basic principle is as follows: and heating at high temperature by using a metal smelting furnace, stripping nonmetallic substances in the nonmetallic materials, separating noble metals from the nonmetallic materials, and then collecting and treating the separated noble metals. In the subsequent operation, the quality of the metal ingot is further improved through the complicated processes such as VAR, electron beam melting and the like.

For the related art, when the separated molten noble metal liquid is cast into the mold, the external temperature of the metal ingot drops rapidly due to different internal and external temperature changes of the metal ingot, and the internal temperature of the metal ingot drops slowly, so that shrinkage cavity occurs in the inner cavity of the metal ingot, and the final molding effect of the metal ingot is reduced.

Disclosure of Invention

In order to obtain higher economic benefit and simultaneously reduce shrinkage cavities of the inner cavity of the metal ingot as much as possible, the application provides a precious metal ingot shrinkage-cavity-free vacuum fine grain casting device.

The application provides a noble metal ingot does not have shrinkage cavity vacuum fine grain casting device, adopts following technical scheme:

the utility model provides a precious metal ingot does not have shrinkage cavity vacuum fine grain casting device, includes furnace body, cloth dish, metal hopper, high-pressure lift motor, crucible and mould, the cloth dish, the metal hopper, high-pressure lift motor, the crucible with the mould all is located the inner chamber of furnace body, the cloth dish with the metal hopper is arranged in proper order along vertical direction, the crucible with the furnace body rotates to be connected, just after the crucible rotates certain angle, the discharge end of metal hopper, the discharge end of crucible with the mould is arranged in proper order along vertical direction;

the material distribution disc can quantitatively throw in noble metal particles in batches, a baffle is arranged at the discharge end of the metal hopper, and the baffle is electrically connected with the high-voltage lifting motor and is rotationally connected with the metal hopper; the die is electrically connected with the high-voltage starting motor.

By adopting the technical scheme, when precious metal smelting is carried out, operators firstly place precious metal particles in the distribution plate and quantitatively throw in batches by aligning the distribution plate. The noble metal particles put in enter into the inner cavity of the metal hopper, the baffle is rotated, the inner cavity of the metal hopper is sealed, the noble metal particles entering into the hopper stay at the baffle, the baffle is charged, so that the noble metal particles are charged, and meanwhile, the noble metal particles are charged, so that the noble metal particles are dispersed. At this time, the crucible rotates, and make the discharge gate of crucible be located the below of the discharge gate of cloth dish, the baffle rotates, make the noble metal granule of baffle inner chamber unrestrained to the discharge gate department of crucible, and with the liquid degree noble metal contact that flows in the crucible, noble metal granule can also act as inoculant simultaneously, promote fine grain casting, fall into the mould afterwards, liquid metal is as the conductor, make the metal also have static in the crucible, static has electrostatic attraction to tiny metal granule, make metal granule and fluid liquid metal top layer fully contact, and then obtain the noble metal ingot of higher quality.

Optionally, the furnace body comprises a cylinder body and a cylinder cover, the cylinder cover is rotationally connected with the cylinder body, and a sealing ring is clamped between the cylinder cover and the cylinder body;

the vacuum unit is arranged outside the cylinder, the side wall of the cylinder is provided with ventilation holes in a penetrating mode, and the inner cavity of the cylinder is communicated with the vacuum unit through the ventilation holes.

Through adopting above-mentioned technical scheme, when carrying out the feeding to the inner chamber of barrel, operating personnel can be through opening and carry out the feeding to relevant component, later with the cover closure, operating personnel is through controlling the vacuum unit, and the vacuum unit carries out the operation of bleeding to the inner chamber of barrel, makes the inner chamber of barrel be in the vacuum state for the device is smelted under the vacuum state, and then obtains the noble metal ingot of higher quality.

Optionally, the baffle is electrostatically charged, and the baffle is preferably charged at an upper kv.

Through adopting above-mentioned technical scheme, the baffle has static, makes noble metal granule after contacting with it, and noble metal granule synchronous electrification, noble metal granule is kept away from each other under the effect of electrostatic force simultaneously, and no longer gathers together. The static electricity is too strong, and the ignition is easy to occur in a vacuum state, so that the safety problem is caused; too weak static electricity is unfavorable for the dispersion among noble metal particles and the mixing of the noble metal particles with liquid metal in the later period, so that the quality of the noble metal ingot is reduced.

Optionally, the top symmetry of mould is equipped with the electro-magnet, the electro-magnet can be towards being close to or keep away from the direction of mould.

Through adopting above-mentioned technical scheme, noble metal's casting die utensil is located strong magnetic field, and the main magnetic line level of magnetic field, during the casting, liquid metal can cut the magnetic line and can receive the resistance at the in-process that falls, when the magnetic line is strong enough, fluid is steady during the casting, and then avoids splashing, reduces the bubble in noble metal spindle inner chamber, obtains the better noble metal spindle of quality. The electromagnet can slide along the direction close to or far away from the die, so that the device is suitable for dies with different sizes and shapes, and the adaptability of the device is improved.

Optionally, the inner chamber of cloth dish is equipped with storage dish and disc, the storage dish is equipped with a plurality of baffles and two adjacent the baffle forms the storage clearance, the storage dish in each storage clearance department all runs through and is equipped with the through-hole, the disc is located the below of storage dish and with the storage dish rotates to be connected, the disc is equipped with logical groove, logical groove can in proper order with the through-hole intercommunication.

Through adopting above-mentioned technical scheme, the storage dish is deposited noble metal granule, and the baffle can separate noble metal granule, makes it unable to mix together, and the disc is rotatory afterwards, drives the through-hole and leads to the groove and communicate in proper order for noble metal granule can enter into the inner chamber of cloth dish by the inner chamber of storage dish via the disc to enter into the inner chamber of metal hopper, the noble metal granule in the storage clearance that does not have the intercommunication then can't enter into the inner chamber of cloth dish.

Optionally, each storage gap is used for containing noble metal particles with different components.

By adopting the technical scheme, precious metal particles with different components play different roles and effects in different casting periods such as early stage, medium stage and later stage, if the precious metal particles are added in a chaotic manner, the content of the precious metal particles in the period is different, the quality of a precious metal ingot is reduced, and meanwhile, the economic benefit is reduced.

Optionally, the bottom wall of each storage gap is provided with a necking at the through hole.

Through adopting above-mentioned technical scheme, the diapire in every storage clearance sets up for the throat for noble metal granule gathers to through-hole department under the effect of gravity, and the disc is rotatory along the storage dish, and logical groove and through-hole are under the state of intercommunication, and noble metal granule can be as early as possible through lug and logical groove, enters into the inner chamber of cloth dish, and the inclined plane of noble through-hole department can be followed to the partial noble metal granule of while is left is slided downwards, and enters into the inner chamber of cloth dish. The inclined plane can reduce noble metal particles to stay in the inner cavity of the storage gap as far as possible, so that the contact effect of the noble metal particles and liquid metal is improved, and the quality of the metal ingot is further improved.

Optionally, the barrel is equipped with the material mouth of getting in the bottom, the inner chamber of getting the material mouth is equipped with the shrouding, the shrouding with it is connected to get the material mouth rotation, the diapire of barrel is equipped with the slide, the slide with get the material mouth intercommunication, the mould can be followed the slide roll-off is got the material mouth.

By adopting the technical scheme, after the finished product metal ingot is manufactured, the finished product metal ingot can leave the cylinder body through the material taking opening under the guide of the slideway and is collected by an operator. The sealing plate can seal the discharge hole, so that the vacuum unit can keep the inner cavity of the cylinder in a vacuum state when in operation, and the quality of the metal ingot is improved in the smelting process.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the metal hopper, the noble metal particles are charged through the discharge of the electrostatic plate in the inner cavity of the metal hopper and are separated from each other and fully dispersed, so that the noble metal particles are uniformly distributed in the liquid metal when contacting with the liquid metal in the crucible in an inclined state and falling into the die;

2. by arranging the electromagnet, the liquid metal can cut the magnetic induction line in the process of falling into the die to generate resistance, the flow speed of the liquid metal is reduced, the fluid is stable during casting, splashing is avoided, and a noble metal ingot with better quality is obtained;

3. through setting up the cloth dish, storage dish department is equipped with a plurality of storage clearances, can make noble metal granule and the liquid metal of different components mix in different casting periods, improves noble metal ingot's quality.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present application;

FIG. 3 is a schematic cross-sectional structure of a distribution tray;

FIG. 4 is a schematic cross-sectional view of a metal hopper;

fig. 5 is a schematic sectional structure of the crucible.

Reference numerals: 1. a furnace body; 11. a cylinder; 12. a cylinder cover; 13. a seal ring; 14. a thermal insulation layer; 15. ventilation holes; 151. a connecting pipe; 16. a vacuum unit; 17. a material taking port; 18. a sealing plate; 19. a slideway; 2. a cloth tray; 21. a storage tray; 22. a partition plate; 23. a storage gap; 24. a through hole; 25. a disc; 26. a motor; 27. a through groove; 3. a metal hopper; 31. a fixing ring; 32. a baffle; 33. a second overturning motor; 4. a high voltage starting motor; 5. a crucible; 51. a rocker; 52. a temperature measuring element; 53. a resistance wire; 54. a heat preservation layer; 6. a mold; 61. an electromagnet.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a precious metal ingot shrinkage-hole-free vacuum fine grain casting device.

Referring to fig. 1 and 2, a precious metal ingot shrinkage-free vacuum fine grain casting apparatus includes a furnace body 1, a distribution tray 2, a metal hopper 3, a high-voltage lift motor 4, a crucible 5, and a mold 6.

Referring to fig. 1 and 2, the furnace body 1 includes a barrel 11 and a barrel cover 12, in this embodiment, the barrel 11 is preferably a hollow cylindrical barrel 11, and the top is an open setting, the barrel cover 12 is adapted to the barrel 11 and is located at the open position of the barrel 11, the barrel 11 and the open position are provided with a first turnover motor, the shell of the first turnover motor is fixedly connected with the barrel 11 in a screw fixing manner, and the barrel cover 12 is fixedly connected with the output shaft of the first turnover motor in a screw fixing manner, wherein the rotation axis of the first turnover motor is horizontal. A sealing ring 13 is clamped between the cylinder 11 and the cylinder cover 12, and the sealing ring 13 is fixedly connected with the cylinder cover 12 in a screw fixing manner. The inner cavity of the cylinder 11 is covered with a heat insulation layer 14, and the heat insulation layer 14 is fixedly connected with the cylinder 11 in a screw fixing mode.

Referring to fig. 1, a vent hole 15 is formed in the top of a cylinder 11 in a horizontal direction, a connection pipe 151 is arranged in an inner cavity of the vent hole 15, a vacuum unit 16 is arranged outside the cylinder 11, one end of the connection pipe 151 is fixedly connected with the cylinder 11, and the other end is fixedly connected with the vacuum unit 16.

Referring to fig. 1, 2 and 3, the distributing plate 2 and the metal hopper 3 are all positioned at the top of the inner cavity of the cylinder 11 and are sequentially arranged along the vertical direction. The material distribution plate 2 is preferably a circular plate, the bottom is provided with a necking opening, a material outlet is formed in the necking opening, the material distribution plate 2 is fixedly connected with the cylinder 11 through a support, a material storage plate 21 is arranged in an inner cavity of the material distribution plate 2, the material storage plate 21 is fixedly connected with the material distribution plate 2 coaxially through a screw fixing mode, a plurality of partition plates 22 are arranged in the inner cavity of the material distribution plate and uniformly distributed along the circumferential direction of the material distribution plate, the partition plates 22 are fixedly connected with the material storage plate 21 through screw fixing, a material storage gap 23 is formed between two adjacent partition plates 22, the bottom wall of each material storage gap 23 is provided with a necking opening, and each material storage gap 23 is provided with a through hole 24 in the necking opening in a penetrating mode along the vertical direction. The bottom of storage disc 21 is equipped with disc 25 and motor 26, and in this embodiment, the preferred servo motor of motor 26, and the shell of motor 26 passes through support and cloth dish 2 fixed connection, and the output shaft of motor 26 passes through key connection's mode and disc 25 fixed connection, and disc 25 runs through along vertical direction and is equipped with logical groove 27, and when disc 25 rotates, logical groove 27 communicates with each through-hole 24 in proper order, and communicates with the discharge gate of cloth dish 2 bottom.

Referring to fig. 1, 2 and 4, the metal hopper 3 is located under the distribution tray 2, in this embodiment, a fixed ring 31, a baffle 32 and a second overturning motor 33 are disposed on a bottom wall of the metal hopper 3, in this embodiment, the fixed ring 31 is preferably made of an insulating material, the fixed ring 31 is located at a discharge end of the metal hopper 3 and is matched with the discharge end of the metal hopper 3, the fixed ring 31 is fixedly connected with the metal hopper 3 in a screw fixing manner, the baffle 32 is located in an inner cavity of the fixed ring 31, a housing of the second overturning motor 33 is fixed on an outer wall of the fixed ring 31 by a screw, and the baffle 32 is fixed on an output shaft of the second overturning motor 33 in a key connecting manner. The baffle 32 is electrically connected to the high voltage motor 4 outside the cylinder 11 through a wire, so that the baffle 32 is electrified, and in this embodiment, the baffle 32 is electrified with kilovolt static electricity.

Referring to fig. 1, 2 and 5, the crucible 5 is located the below of the metal hopper 3, and there is certain deviation in vertical direction with the discharge end of the metal hopper 3, the lateral wall of the crucible 5 is equipped with a rocker 51, the rocker 51 wears to locate the barrel 11 and the mode of bearing connection is rotated with the barrel 11 and is connected, the rocker 51 is located the inside one end of barrel and the crucible 5 through the mode fixed connection of screw fixation, and the axis of rotation level setting of crucible 5, in this embodiment, after the crucible 5 overturns certain angle, the discharge gate of crucible 5 is located under the discharge end of the metal hopper 3.

Referring to fig. 1, 2 and 5, the inner cavity of the crucible 5 is provided with a temperature measuring element 52, and the temperature measuring element 52 is fixedly connected with the crucible 5 by means of screw fixation. The outer wall of the crucible 5 is wound with a plurality of groups of resistance wires 53, each group of resistance wires 53 are connected in series, and the resistance wires 53 are electrically connected with the high-voltage starting motor 4 through wires. The outer wall of the resistance wire 53 is wrapped with an insulating layer 54, and the insulating layer 54 is fixedly connected with the crucible 5 in a screw fixing manner.

Referring to fig. 1 and 2, a material taking opening 17 is formed in the bottom wall of the cylinder 11 along the horizontal direction, a sealing plate 18 is arranged at the material taking opening 17, a third overturning motor is arranged at the sealing plate 18, a shell of the third overturning motor is fixedly connected with the outer wall of the cylinder 11 in a screw fixing mode, and an output end of the third overturning motor is fixedly connected with the sealing plate 18 in a screw fixing mode. The bottom wall of the cylinder 11 is provided with a slide 19, and the slide 19 is communicated with the material taking opening 17. The mould 6 is placed vertically and is located at the bottom wall of the barrel 11, which is able to slide along a slide 19. In this embodiment, when the die 6 is located at the end of the slide 19 away from the discharge port, the metal hopper 3, the turned crucible 5 and the die 6 are located in the same vertical direction. The top of the mould 6 is symmetrically provided with electromagnets 61, the distance between the two electromagnets 61 is variable, the electromagnets 61 are fixedly connected with the cylinder 11 in a screw fixing manner, a certain gap exists between the electromagnets 61 and the mould 6, and in the embodiment, the gap is at least 30mm. The die 6 is electrically connected with the high-voltage motor 4 through a wire

The implementation principle of the precious metal ingot shrinkage-hole-free vacuum fine grain casting device is as follows: the operator first opens the cap 12, then charges the accumulator 21 and the crucible 5, then closes the cap 12, and vacuums the interior of the can 11 by the vacuum unit 16.

After the vacuum pumping is completed, the resistance wire 53 at the crucible 5 is electrified, and melts the noble metal in the crucible 5 to be converted into liquid metal, and the temperature of the inner cavity of the crucible 5 is measured by the temperature measuring element 52, and when the temperature is consistent with a certain temperature, the crucible 5 is driven to rotate by the rocker 51. Simultaneously, the motor 26 drives the disc 25 to rotate, so that the through grooves 27 are communicated with the through holes 24, precious metal particles in the inner cavities of different storage gaps 23 enter the inner cavities of the distribution plate 2 through the through holes 24 and the through grooves 27 and then fall into the metal hopper 3, the second overturning motor 33 drives the baffle 32 to rotate, the precious metal particles are electrified while being blocked at the baffle 32, at the moment, the precious metal particles are mutually dispersed, the baffle 32 rotates, and the precious metal particles are mixed with liquid metal flowing out of the inclined crucible 5 after leaving the metal hopper 3.

Then the liquid metal falls into the mould 6, and cuts the magnetic induction line, and is subjected to resistance, the flow speed is reduced, when the magnetic force line is strong enough, the fluid is stable during casting, and splashing is avoided, so that the noble metal ingot with better quality is obtained.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. The utility model provides a precious metal ingot does not have shrinkage cavity vacuum fine grain casting device which characterized in that: the novel crucible furnace comprises a furnace body (1), a distribution plate (2), a metal hopper (3), a high-voltage lifting motor (4), a crucible (5) and a die (6), wherein the distribution plate (2), the metal hopper (3), the high-voltage lifting motor (4), the crucible (5) and the die (6) are all positioned in an inner cavity of the furnace body (1), the distribution plate (2) and the metal hopper (3) are sequentially arranged along the vertical direction, the crucible (5) is rotationally connected with the furnace body (1), and after the crucible (5) rotates for a certain angle, the discharge end of the metal hopper (3), the discharge end of the crucible (5) and the die (6) are sequentially arranged along the vertical direction;

the material distribution disc (2) can quantitatively throw noble metal particles in batches, a baffle (32) is arranged at the discharge end of the metal hopper (3), and the baffle (32) is electrically connected with the high-voltage lifting motor (4) and is rotationally connected with the metal hopper (3); the die (6) is electrically connected with the high-voltage starting motor (4).

2. The precious metal ingot shrinkage-free vacuum fine grain casting device according to claim 1, wherein: the furnace body (1) comprises a cylinder body (11) and a cylinder cover (12), wherein the cylinder cover (12) is rotationally connected with the cylinder body (11), and a sealing ring (13) is clamped between the cylinder cover (12) and the cylinder body (11);

the vacuum unit (16) is arranged outside the cylinder body (11), the ventilation holes (15) are formed in the side wall of the cylinder body (11) in a penetrating mode, and the inner cavity of the cylinder body (11) is communicated with the vacuum unit (16) through the ventilation holes (15).

3. The precious metal ingot shrinkage-free vacuum fine grain casting device according to claim 1, wherein: the baffle (32) is electrostatically charged and the baffle (32) is preferably charged at an upper kilovolt.

4. The precious metal ingot shrinkage-free vacuum fine grain casting device according to claim 1, wherein: the top of the die (6) is symmetrically provided with electromagnets (61), and the electromagnets (61) can slide towards a direction approaching or separating from the die (6).

5. The precious metal ingot shrinkage-free vacuum fine grain casting device according to claim 1, wherein: the inner chamber of cloth dish (2) is equipped with storage dish (21) and disc (25), storage dish (21) are equipped with a plurality of baffles (22) and adjacent two baffle (22) form storage clearance (23), storage dish (21) in each storage clearance (23) department all runs through and is equipped with through-hole (24), disc (25) are located the below of storage dish (21) and with storage dish (21) swivelling joint, disc (25) are equipped with logical groove (27), logical groove (27) can in proper order with through-hole (24) intercommunication.

6. The precious metal ingot shrinkage-free vacuum fine grain casting device according to claim 5, wherein: each storage gap (23) is used for containing noble metal particles with different components.

7. The precious metal ingot shrinkage-free vacuum fine grain casting device of claim 6, wherein: the bottom wall of each storage gap (23) is provided with a necking at the through hole (24).

8. The precious metal ingot shrinkage-free vacuum fine grain casting device according to claim 2, wherein: the utility model discloses a material taking device, including barrel (11), mould (6), barrel, material taking opening (17) are equipped with in the bottom, the inner chamber of material taking opening (17) is equipped with shrouding (18), shrouding (18) with material taking opening (17) rotate and are connected, the diapire of barrel (11) is equipped with slide (19), slide (19) with material taking opening (17) intercommunication, mould (6) can be followed slide (19) roll-off material taking opening (17).