An intelligent temperature-controlled gold melting machine

Abstract

The present invention relates to an intelligent temperature-controlled gold melting machine, comprising a round seat, a sealing cover and a controller. An outer crucible is mounted on the upper surface of the round seat through a plurality of heat-insulating support parts, an inner crucible is arranged in the outer crucible, an annular cavity is formed between the outer wall of the inner crucible and the inner wall of the outer crucible, a spiral copper tube is arranged in the annular cavity, a gap is arranged between the spiral copper tube and the inner wall of the outer crucible and the outer wall of the inner crucible, both ends of the spiral copper tube are arranged on the round seat, the spiral copper tube is connected to a power supply module, an air conditioner is connected to either end of the spiral copper tube, a temperature probe 1 is arranged near the position of the inner crucible, a detachable sealing cover is fitted on the upper surface of the round seat, an air pump is arranged on the sealing cover, the air pump is connected to the inside of the sealing cover, and the controller is electrically connected to the temperature probe 1 and the air conditioner. The present invention can effectively resist the conduction of heat to the outside during the heating process and resist the excessive heating of the spiral copper tube, which is conducive to improving the heating speed, and can also reduce the power consumption of the gold melt and avoid the surface of the spiral copper tube from agglomerating and falling off and being damaged prematurely.

Description

Technical Field

[0001] The invention belongs to the technical field of gold melting machines, and in particular relates to an intelligent temperature-controlled gold melting machine. Background Art

[0002] There are three ways of heat dissipation in the natural environment. Generally, the three ways of heat dissipation are carried out simultaneously. Heat conduction accounts for about 50%, heat convection accounts for 40%, and heat radiation accounts for about 10%. In the process of gold processing, it is often necessary to heat the gold to melt it and then cast it into shape. There are two methods for melting gold in the prior art. One is to use a high-temperature flame to burn the gold to melt it, and the other is to use a gold melting machine to generate electromagnetic induction to melt the gold. The gold melting machine in the prior art includes a power supply module, a spiral copper tube and a crucible. The spiral copper tube surrounds the outside of the crucible. The power supply module provides a high-frequency alternating current to the spiral copper tube, so that the gold placed in the crucible generates a large eddy current and is quickly heated and melted. In this process, the spiral copper tube will also generate high temperature, so that the spiral copper tube is overheated and cooled by the frequency, which is easy to cause the surface of the spiral copper tube to easily agglomerate and fall off and be damaged prematurely. In addition, a large amount of heat will be dissipated to the outside during the operation of the gold melting machine, resulting in high power consumption of the gold melting machine. Summary of the invention

[0003] The present invention provides an intelligent temperature-controlled gold melting machine, which can effectively resist the heat conduction to the outside during the heating process and resist the overheating of the spiral copper tube, which is beneficial to improving the heating speed, reducing the power consumption of gold melting and avoiding the premature damage of the spiral copper tube due to caking and falling off on the surface.

[0004] The technical solution adopted by the present invention is:

[0005] An intelligent temperature-controlled gold melting machine comprises a round seat, a sealing cover and a controller, an outer crucible is supported on the upper surface of the round seat by a plurality of heat-insulating support parts, an inner crucible is arranged in the outer crucible, a gap is provided between the bottom of the inner crucible and the upper surface of the round seat, an annular cavity is formed between the outer wall of the inner crucible and the inner wall of the outer crucible, a spiral copper tube is provided in the annular cavity, a gap is provided between the spiral copper tube and the inner wall of the outer crucible and the outer wall of the inner crucible, both ends of the spiral copper tube are arranged on the round seat, the spiral copper tube is connected to a power supply module, an air cooler is connected to either end of the spiral copper tube, a temperature measuring probe 1 is provided on the spiral copper tube near the position of the inner crucible, the sealing cover is a detachable sealing cover engaged on the upper surface of the round seat, an air pump is provided on the sealing cover, the air pump is connected to the inside of the sealing cover through an air suction pipe, a one-way valve is provided on the air suction pipe, and the controller is electrically connected to the temperature measuring probe 1 and the air cooler.

[0006] Furthermore, a flange is provided at the bottom of the outer crucible, and the heat-insulating support portion includes a plurality of silicon carbide columns connected between the flange and the upper surface of the round seat, and a vacuum cavity is provided in the silicon carbide columns.

[0007] Furthermore, a flange is provided at the bottom of the outer crucible, and the thermal insulation support portion includes a plurality of magnet columns connected to the lower surface of the flange and a plurality of magnet sleeves and magnet disks provided on the upper surface of the round seat, the magnet disk is located in the middle of the magnet sleeve, and the magnet column is located in the magnet sleeve and above the magnet disk, and the magnet sleeve is utilized to uniformly generate the same force on the magnet column along the circumferential direction, and the magnet disk generates an upward magnetic thrust on the magnet column, so that the magnet column is suspended in the magnet sleeve and does not contact the magnet sleeve and the magnet disk.

[0008] Furthermore, a second temperature measuring probe is provided on the outer wall of the inner crucible, and the controller is electrically connected to the power supply module and the second temperature measuring probe.

[0009] Furthermore, the air conditioner is connected to the end of the spiral copper tube through an insulating joint.

[0010] Furthermore, the sealing cover is provided with an air intake valve, and the controller is electrically connected to the air extraction pump and the air intake valve.

[0011] Furthermore, a nickel-plated layer is provided on the inner wall of the sealing cover.

[0012] Furthermore, a sealing ring is provided between the sealing cover and the round seat.

[0013] Furthermore, the sealing cover is made of silicon carbide material.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] After the sealing cover is closed on the round seat, the inside of the sealing cover is evacuated by using an exhaust pump, so that a vacuum space is also formed between the outer wall of the outer crucible and the inner wall of the sealing cover, so as to prevent the heat of the inner crucible and the outer crucible from being transferred to the sealing cover, thereby preventing personnel from accidentally touching the sealing cover and being scalded during the heating process, and effectively resisting the heat transfer to the outside during the heating process; since a vacuum space is also formed between the inner wall of the outer crucible and the outer wall of the inner crucible, and the spiral copper tube does not contact the inner wall of the outer crucible and the outer wall of the inner crucible, the heat of the inner crucible and the outer crucible can be prevented from being transferred to the spiral copper tube, thereby reducing the probability of the spiral copper tube generating high temperature during low-power heating, and when high-power heating is performed, a large current will pass through the spiral copper tube. However, high temperature is easy to be generated. When the temperature measuring probe detects that the temperature on the spiral copper tube is too high, the controller controls the air conditioner to transport cold air into the spiral copper tube for cooling, thereby avoiding the situation where the surface of the spiral copper tube is agglomerated and falls off and is damaged prematurely; since the heat of the inner crucible will be transmitted to the outer crucible through the outer crucible, but the bottom of the outer crucible is supported on the round seat by a heat-insulating support part, and a vacuum space is formed between the bottom of the inner crucible and the upper surface of the round seat, the heat of the outer crucible and the inner crucible can be prevented from being transmitted to the round seat, so that it is convenient to directly remove the sealing cover after the gold is melted, and then the gold liquid in the inner crucible can be poured out by lifting the disc, so that the heat loss of the present invention is small, the energy-saving effect is good, and it is beneficial to increase the heating speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 and Embodiment 2;

[0017] Figure 2 This is the electrical control principle diagram of the first embodiment;

[0018] Figure 3 It is a partial structural diagram of the third embodiment;

[0019] In the figure: 1. round seat; 2. sealing ring; 3. sealing cover; 4. air inlet valve; 5. temperature probe 1; 6. temperature probe 2; 7. annular cavity; 8. outer crucible; 9. flange; 10. one-way valve; 11. exhaust pipe; 12. vacuum chamber; 13. silicon carbide column; 14. controller; 15. inner crucible; 16. insulating joint; 17. air conditioner; 18. wire; 19. power supply module; 20. exhaust pump; 21. nickel plating; 22. spiral copper tube; 23. magnet column; 24. magnet sleeve; 25. magnet disk. DETAILED DESCRIPTION

[0020] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0021] Embodiment 1:

[0022] See also Figures 1 to 2The present invention provides an intelligent temperature-controlled gold melting machine, including a round seat 1, a sealing cover 3 and a controller 14. An outer crucible 8 is mounted on the upper surface of the round seat 1 through a plurality of heat-insulating support parts, and the heat-insulating support parts can effectively suppress heat conduction. An inner crucible 15 is arranged in the outer crucible 8, and the outer crucible 8 and the top of the inner crucible 15 are connected to each other. There is a gap between the bottom of the inner crucible 15 and the upper surface of the round seat 1, but they are not in contact. An annular cavity 7 is formed between the outer wall of the inner crucible 15 and the inner wall of the outer crucible 8. A spiral copper tube 22 is arranged in the annular cavity 7. A gap is arranged between the spiral copper tube 22 and the inner wall of the outer crucible 8 and the outer wall of the inner crucible 15, so that the outer crucible 8 and the inner crucible 15 are not in contact. Both ends of the spiral copper tube 22 are fixed on the round seat 1, and the spiral copper tube 22 is connected to a power supply module 19, which is used to provide high frequency to the spiral copper tube 22. Alternating current, one end of the spiral copper tube 22 is connected to an air cooler 17, the air cooler 17 is used to transport cold air into one end of the spiral copper tube 22, and then discharge it from the other end to heat the spiral copper tube 22, the spiral copper tube 22 is provided with a temperature probe 5 near the inner crucible 15, the temperature probe 5 is used to monitor the temperature on the spiral copper tube 22, the sealing cover 3 is detachable and is closed on the upper surface of the round seat 1, which is convenient for the sealing cover 3 to be closed on the round seat 1 or removed from the round seat 1, and an air pump 20 is provided on the top of the sealing cover 3, and the air pump 20 is connected to the inside of the sealing cover 3 through the air extraction pipe 11, and a one-way valve 10 is provided on the air extraction pipe 11, and the one-way valve 10 is used to prevent external air from flowing into the sealing cover 3 through the air extraction pipe 11, and the controller 14 is electrically connected to the temperature probe 5 and the air cooler 17.

[0023] When the present invention is used, after gold is placed in the inner crucible 15, the sealing cover 3 is closed on the round seat 1, so that a sealed space is formed between the sealing cover 3 and the upper surface of the round seat 1, and the vacuum pump 20 is started to evacuate the inside of the sealing cover 3, so that a vacuum space is formed between the outer wall of the outer crucible 8 and the inner wall of the sealing cover 3, and the power supply module 19 is started to provide a high-frequency alternating current to the spiral copper tube 22 to generate a high-frequency alternating magnetic field. During this process, the spiral copper tube 22 will heat up, and the gold in the inner crucible 15 will heat up and melt under the action of the high-frequency alternating magnetic field. Since the vacuum can block the conduction of heat, the heat of the inner crucible 15 and the outer crucible 8 is prevented from being conducted to the sealing cover 3, and the personnel can be prevented from accidentally touching the sealing cover 3 and being scalded during the heating process, and the heat conduction to the outside during the heating process can be effectively resisted; since a vacuum space is also formed between the inner wall of the outer crucible 8 and the outer wall of the inner crucible 15, and the spiral copper tube 22 does not contact the inner wall of the outer crucible 8 and the outer wall of the inner crucible 15, the heat conduction between the inner crucible 15 and the outer crucible 8 can be prevented On the spiral copper tube 22, it is avoided that the spiral copper tube 22 is passively heated and generates high temperature when low-power heating is performed. When high-power heating is performed, a large current will pass through the spiral copper tube 22 and high temperature will be easily generated. When the temperature probe 5 detects that the temperature on the spiral copper tube 22 is higher than the preset value, the controller 14 controls the air conditioner 17 to transport cold air into the spiral copper tube 22 for cooling, thereby avoiding the situation where the surface of the spiral copper tube 22 is agglomerated and falls off and is damaged prematurely; since the heat of the inner crucible 15 will be conducted to the outer crucible 8 through the outer crucible 8, but the bottom of the outer crucible 8 is supported on the round seat 1 by a heat-insulating support portion, and a vacuum space is formed between the bottom of the inner crucible 15 and the upper surface of the round seat 1, the heat of the outer crucible 8 and the inner crucible 15 can be avoided from being conducted to the round seat 1, so that it is convenient to directly remove the sealing cover 3 after the gold is melted, and then the gold water in the inner crucible 15 is poured out by lifting the disc, so that the structure of the present invention is simple, the heat loss during the heating process is small, the energy-saving effect is good, and it is conducive to improving the heating speed.

[0024] Preferably, a flange 9 is provided at the bottom of the outer crucible 8, and the thermal insulation support portion includes a plurality of silicon carbide columns 13 connected between the flange 9 and the upper surface of the round seat 1. Silicon carbide has good thermal insulation function, and a vacuum chamber 12 is provided in the silicon carbide column 13. The thermal insulation effect can be further improved by cooperating with the vacuum chamber 12.

[0025] Preferably, a temperature probe 6 is provided on the outer wall of the inner crucible 15, and the controller 14 is electrically connected to the power supply module 19 and the temperature probe 6. The temperature probe 6 is used to monitor the temperature on the side wall of the inner crucible 15. When the temperature is higher than a preset value, the controller 14 controls the power supply module 19 to stop inputting alternating current to the spiral copper tube 22, thereby achieving an automatic temperature control effect.

[0026] Preferably, the air cooler 17 is connected to the end of the spiral copper tube 22 via an insulating joint 16 , and the insulating joint 16 can prevent the spiral copper tube 22 from conducting current to the air cooler 17 .

[0027] Preferably, an air intake valve 4 is provided on the sealing cover 3, and the air intake valve 4 is a solenoid valve. The controller 14 is electrically connected to the vacuum pump 20 and the air intake valve 4. When the gold is melted, the controller 14 is used to control the air intake valve 4 to open, so that external air flows into the sealing cover 3, so that the pressure inside and outside the sealing cover 3 is constant, which is convenient for opening the sealing cover 3.

[0028] Preferably, a sealing ring 2 is provided between the sealing cover 3 and the round seat 1 , and the sealing ring 2 is an annular structure, which is beneficial to improving the sealing between the sealing cover 3 and the round seat 1 .

[0029] Embodiment 2

[0030] See also Figure 1 , which is different from the first embodiment in that:

[0031] Preferably, a nickel-plated layer 21 is provided on the inner wall of the sealing cover 3. The nickel-plated layer 21 has a good function of blocking heat radiation, and can effectively block the heat radiation emitted outward from the inside of the sealing cover 3, thereby further reducing heat loss.

[0032] Preferably, the sealing cover 3 is made of silicon carbide material. The vacuum layer is first used to block the heat conduction from the outer crucible 8 and the inner crucible 15 to the sealing cover 3, and then the nickel plating layer 21 is used to block the heat radiation from the outer crucible 8 and the inner crucible 15 to the sealing cover 3. The sealing cover 3 is insulated by silicon carbide, which effectively suppresses the heat generated by the nickel plating layer 21 from being conducted to the outside, so that the sealing cover 3 has a lower temperature after heating is completed, which greatly reduces heat loss and is also convenient for directly picking up the sealing cover 3 by hand.

[0033] Embodiment 3

[0034] See also Figure 3 , which is different from the first embodiment in that:

[0035] Preferably, a flange 9 is provided at the bottom of the outer crucible 8, and the heat-insulating support portion includes a plurality of magnet columns 23 fixedly connected to the lower surface of the flange 9 and a plurality of magnet sleeves 24 and a magnet disk 25 fixedly provided on the upper surface of the round seat 1, the magnet disk 25 is located in the middle of the magnet sleeve 24, the magnet column 23 is located in the magnet sleeve 24 and above the magnet disk 25, and the magnet sleeve 24 is used to uniformly generate inward or outward forces of the same magnitude on the magnet column 23 along the circumferential direction, so that the magnet column 23 is located on the central axis of the magnet sleeve 24, and the magnet disk 25 is used to generate an upward magnetic thrust on the magnet column 23, so that the magnet column 23 is suspended in the magnet sleeve 24 and does not contact the magnet sleeve 24 and the magnet disk 25. In addition, since there is a vacuum space between the magnet sleeve 24 and the magnet column 23, and there is also a vacuum space between the magnet column 23 and the magnet disk 25, heat conduction can be effectively blocked, and the heat insulation effect is good. It should also be noted that during the heating process, the magnetic field generated by the spiral copper tube 22 will interfere with the magnetic fields of the magnet column 23, the magnet disk 25 and the magnet column 23, causing the magnet column 23 to vibrate at a high frequency in the magnet sleeve 24, and then drive the inner crucible 15 to vibrate through the outer crucible 8, causing the gold to vibrate during the heating process, which is conducive to promoting the rapid melting of the gold.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An intelligent temperature-controlled gold melting machine, characterized in that: It comprises a round seat, a sealing cover and a controller, an outer crucible is mounted on the upper surface of the round seat through a plurality of heat-insulating support parts, an inner crucible is arranged in the outer crucible, a gap is provided between the bottom of the inner crucible and the upper surface of the round seat, an annular cavity is formed between the outer wall of the inner crucible and the inner wall of the outer crucible, a spiral copper tube is arranged in the annular cavity, a gap is provided between the spiral copper tube and the inner wall of the outer crucible and the outer wall of the inner crucible, both ends of the spiral copper tube are arranged on the round seat, the spiral copper tube is connected to a power supply module, an air cooler is connected to either end of the spiral copper tube, a temperature measuring probe 1 is arranged near the position of the inner crucible, the sealing cover is a detachable sealing cover engaged on the upper surface of the round seat, an air pump is arranged on the sealing cover, the air pump is connected to the inside of the sealing cover through an air extraction pipe, a one-way valve is arranged on the air extraction pipe, and the controller is electrically connected to the temperature measuring probe 1 and the air cooler; A flange is provided at the bottom of the outer crucible, and the heat-insulating support portion includes a plurality of magnet columns connected to the lower surface of the flange and a plurality of magnet sleeves and magnet disks provided on the upper surface of the round seat, wherein the magnet disk is located in the middle of the magnet sleeve, and the magnet column is located in the magnet sleeve and above the magnet disk, and the magnet sleeve is used to uniformly generate the same force on the magnet column along the circumferential direction, and the magnet disk generates an upward magnetic thrust on the magnet column, so that the magnet column is suspended in the magnet sleeve and does not contact the magnet sleeve and the magnet disk.

2. The intelligent temperature-controlled gold melting machine according to claim 1, characterized in that: A second temperature measuring probe is arranged on the outer wall of the inner crucible, and the controller is electrically connected to the power supply module and the second temperature measuring probe.

3. The intelligent temperature-controlled gold melting machine according to claim 1, characterized in that: The air conditioner is connected to the end of the spiral copper tube through an insulating joint.

4. The intelligent temperature-controlled gold melting machine according to claim 1, characterized in that: The sealing cover is provided with an air intake valve, and the controller is electrically connected to the air extraction pump and the air intake valve.

5. The intelligent temperature-controlled gold melting machine according to claim 1, characterized in that: A nickel-plated layer is provided on the inner side wall of the sealing cover.

6. The intelligent temperature-controlled gold melting machine according to claim 1, characterized in that: A sealing ring is arranged between the sealing cover and the round seat.

7. The intelligent temperature-controlled gold melting machine according to claim 5, characterized in that: The sealing cover is made of silicon carbide material.

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