Vacuum consumable smelting furnace for titanium alloy smelting

Abstract

The invention relates to the technical field of vacuum consumable smelting furnaces, in particular to a vacuum consumable smelting furnace for titanium alloy smelting. The smelting furnace comprises a base and a smelting furnace body, the smelting furnace body is fixedly connected to the center of the top of the base, the two sides of the top of the base are fixedly connected with a recycling water tank and an output water tank correspondingly, and the top of the smelting furnace body is provided with a sealing water bag and a sealing air bag which are used for sealing. According to the smelting furnace, the purpose of sealing the smelting furnace body can be achieved after the bottom wall plate of the sealing cover fully abuts against the sealing air bag through the arrangement of the sealing air bag, the sealing water bag can abut against the side wall of the bottom end of the sealing cover when the sealing water bag expands, and through the abutting of the sealing water bag and the side wall of the bottom end of the sealing cover, the smelting furnace body can be sealed. And the sealing cover and the smelting furnace body are subjected to secondary sealing.

Description

Technical Field

[0001] The invention relates to the field of vacuum consumable melting furnaces, in particular to a vacuum consumable melting furnace for melting titanium alloys. Background Art

[0002] Vacuum consumable melting furnace is a kind of melting equipment that uses electric arc to melt metal at high temperature in vacuum environment. It mainly includes furnace body, crucible, water cooling system, electrode rod and its transmission system, weighing system, vacuum system, power supply system, observation system and other parts.

[0003] A new type of vacuum consumable smelting equipment is disclosed in the patent with publication number CN206858630U, including a base and a crucible arranged on the base, a control box, an electrode lifting mechanism, an electrode rod, an electrode chuck, a consumable electrode, a furnace shell, a vacuum mechanism and a water cooling jacket.

[0004] However, the above-mentioned smelting equipment still has certain defects when in use. The sealing of the smelting furnace needs to be effectively guaranteed, otherwise it will cause smelting failure. In the prior art, the seal between the furnace body and the furnace cover is usually not tight, resulting in the outside atmosphere entering the furnace. In addition, the vacuum machine is prone to a lot of noise and vibration during the vacuuming process, which has certain defects. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a vacuum consumable melting furnace for titanium alloy melting.

[0006] To achieve the above objectives, the technical solution adopted in the present invention is: a vacuum consumable melting furnace for titanium alloy melting, comprising a base and a melting furnace body, the melting furnace body being fixedly connected to the top center of the base, and a recovery water tank and an output water tank are respectively fixedly connected to the top two sides of the base, a sealing water bag and a sealing air bag for sealing are arranged on the top of the melting furnace body, the output water tank is used to supply water to the sealing water bag, a water cooling chamber is opened inside the melting furnace body, and the output water tank is also used to supply water to the water cooling chamber, a sealing cover is installed on the top of the melting furnace body for lifting, the sealing water bag is movably connected to the outer wall of the bottom end of the sealing cover, one side of the sealing cover is connected to a vacuum machine, the vacuum machine is arranged on the top of the recovery water tank, and the recovery water tank is used to reduce the vibration and noise of the vacuum machine.

[0007] Preferably, an outer ring is fixedly connected to the top of the smelting furnace body, a sealing water bag is opened inside the outer ring, a slot is opened on the bottom outer wall of the cover, the bottom of the slot is provided with a chamfer, the sealing water bag is engaged with the slot in an expanded state, a sealing air bag is opened on the top of the smelting furnace body, and the sealing air bag is located on the inner side of the outer ring, the sealing air bag abuts against the bottom wall panel of the cover, and an inverted groove is opened on the top of the outer ring, and the inverted groove is used to limit the cover.

[0008] Preferably, a plurality of observation windows are provided on the top of the cover, and a mounting seat is provided above the cover, both ends of the mounting seat are fixedly connected with telescopic rods, the telescopic end of the telescopic rod is fixedly connected to the mounting seat, and the fixed end of the telescopic rod is fixedly connected to the top wall panel of the cover, and the mounting seat is used to install the cover in the smelting workshop.

[0009] Preferably, an electrode feeding device is fixedly connected to the center of the cover, a clamp is fixedly connected to the bottom of the electrode feeding device, an electrode body is clamped in the clamp, a crucible is provided inside the smelting furnace body, the crucible is used to collect the electrode body under smelting, a water cooling chamber is provided between the crucible and the smelting furnace body, and the top of the water cooling chamber is connected to the sealed water bag.

[0010] Preferably, a water pump is fixedly connected to the inside of the output water tank, and the output end of the water pump is connected to an electromagnetic three-way valve. The electromagnetic three-way valve is a one-inlet and two-outlet three-way valve, whose water inlet end is connected to the output end of the water pump, and its two water outlet ends are respectively connected to a first water pipe and a second water pipe, one end of the first water pipe away from the electromagnetic three-way valve is connected to a sealed water bag, and one end of the second water pipe away from the electromagnetic three-way valve passes through the wall panel of the smelting furnace body and is connected to the internal chamber of the crucible, and a solenoid valve is provided at the connection between the second water pipe and the internal chamber of the crucible.

[0011] Preferably, the bottom of the sealed water bag is connected with a plurality of built-in tubes, a pressure valve is provided at the connection between the built-in tubes and the sealed water bag, a water outlet pipe is fixedly connected to one side of the bottom of the smelting furnace body, the water outlet pipe and the first water pipe are respectively located on both sides of the smelting furnace body, the water outlet pipe is connected with the water cooling chamber, and the end of the water outlet pipe away from the water cooling chamber passes through the side wall of the recovery water tank, the end of the water outlet pipe away from the water cooling chamber is connected with a U-shaped tube, and the connection between the two is located at the middle section of the U-shaped tube, and a water pressure valve is provided inside the water outlet pipe.

[0012] Preferably, one side of the sealing cover is connected to an air pipe, and the end of the air pipe away from the sealing cover is connected to the vacuum machine, the bottom of the vacuum machine is fixedly connected to a pad, the pad is fixedly connected to the top wall panel of the recovery water tank, the bottom of the pad is fixedly connected to a support rod, the support rod passes through the top wall panel of the recovery water tank, and the end of the support rod away from the pad is fixedly connected to the inner bottom wall panel of the recovery water tank.

[0013] Preferably, both sides of the support rod are fixedly connected with interference columns, and the two interference columns are respectively located in front of the two water outlet ends of the U-shaped tube.

[0014] Preferably, both sides of the recovery water tank near the output water tank are fixedly connected with return water pipes, the two ends of the return water pipes are respectively connected to the internal chambers of the recovery water tank and the output water tank, a plurality of heat sinks are fixedly connected to the bottom of the return water pipe, and the end of the heat sink away from the return water pipe is fixedly connected to the top wall panel of the base.

[0015] Preferably, when the cover and the smelting furnace body are sealed, the vacuum machine extracts the air in the chamber formed between the cover and the smelting furnace body, so that the vacuum degree of the chamber formed between the cover and the smelting furnace body is less than 0.3Pa.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can achieve the purpose of sealing the smelting furnace body by setting the sealing air bag, after the bottom wall plate of the cover is fully abutted against the sealing air bag, and the sealing water bag is set, when the sealing water bag expands, the sealing water bag will abut against the bottom side wall of the cover, and the cover and the smelting furnace body are secondary sealed by the abutment of the sealing water bag and the bottom side wall of the cover, so as to further ensure the sealing between the cover and the smelting furnace body, which is conducive to preventing the air in the external atmosphere from entering the internal chamber between the smelting furnace body and the cover during the subsequent vacuuming, thereby causing the smelting failure due to insufficient vacuum when smelting the electrode body.

[0018] 2. The present invention transmits the vibration of the vacuum machine to the water inside the recovery water tank through the setting of the support rod. After the vibration is transmitted, part of the vibration emitted by the vacuum machine will be transmitted to the water and converted into the internal energy of the water. Through the consumption and conversion of the vibration, on the one hand, it is beneficial to reduce the vibration of the vacuum machine, and on the other hand, it can also reduce the noise caused by the vibration of the vacuum machine, which has a certain effect of shock absorption and noise reduction on the vacuum machine. At the same time, by recycling the water in the water tank, the overall mass of the vacuum machine and the recovery water tank can be increased, thereby increasing the difficulty of vibration of the vacuum machine and the recovery water tank, and further reducing the vibration and noise of the vacuum machine by increasing the difficulty of vibration.

[0019] 3. The present invention reduces the probability of resonance between the vacuum machine and other units of the vacuum consumable melting equipment through the external force generated by the interference column, and has a certain inhibitory effect on the resonance. Through the setting of the interference column, the resonance is suppressed to a certain extent, which is beneficial to avoid the reduction of the service life of the vacuum machine due to resonance. Secondly, it can also help to avoid the further expansion of vibration and noise generated by the vacuum machine due to resonance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0022] Figure 3 It is a schematic cross-sectional view of the structure of the base of the present invention;

[0023] Figure 4 For the present invention Figure 3 An enlarged schematic diagram of the structure of section A is shown;

[0024] Figure 5 For the present invention Figure 3 The structure of part B is shown in an enlarged schematic diagram;

[0025] Figure 6 It is a schematic cross-sectional view of the structure of the U-shaped tube of the present invention;

[0026] Figure 7 It is a schematic cross-sectional view of the structure of the return water pipe of the present invention;

[0027] Figure 8 It is a schematic diagram of the connection structure of the cover of the present invention;

[0028] Fig. 9 It is a schematic diagram of the connection structure of the pad of the present invention;

[0029] Fig.10 It is a schematic diagram of the overall structure of the smelting furnace body of the present invention.

[0030] In the figure: 1. base; 2. melting furnace body; 3. cover; 4. vacuum machine; 5. recovery water tank; 6. output water tank; 7. first water pipe; 8. air pipe; 9. mounting seat; 10. return water pipe; 11. heat sink; 12. pad; 13. observation window; 14. electrode feeding device; 15. electrode body; 16. support rod; 17. water cooling chamber; 18. second water pipe; 19. solenoid valve; 20. solenoid three-way valve; 21. water pump; 22. crucible; 23. inverted trough; 24. sealed water bag; 25. card slot; 26. built-in tube; 27. pressure valve; 28. sealed air bag; 29. ​​water outlet pipe; 30. water pressure valve; 31. U-shaped tube; 32. interference column. DETAILED DESCRIPTION

[0031] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0032] like Figures 1 to 10The vacuum consumable melting furnace for titanium alloy melting shown in the figure comprises a base 1 and a melting furnace body 2. The melting furnace body 2 is fixedly connected to the top center of the base 1. A recovery water tank 5 and an output water tank 6 are fixedly connected to the top two sides of the base 1 respectively. A sealing water bag 24 and a sealing air bag 28 for sealing are arranged on the top of the melting furnace body 2. The output water tank 6 is used to supply water to the sealing water bag 24. A water cooling chamber 17 is opened inside the melting furnace body 2. The output water tank 6 is also used to supply water to the water cooling chamber 17. A sealing cover 3 is installed on the top of the melting furnace body 2 for lifting. The sealing water bag 24 is movably connected to the outer wall of the bottom end of the sealing cover 3. One side of the sealing cover 3 is connected to a vacuum machine 4. The vacuum machine 4 is arranged on the top of the recovery water tank 5. The recovery water tank 5 is used to reduce the vibration and noise of the vacuum machine 4.

[0033] In a specific implementation, a water inlet is provided on one side of the top of the recovery water tank 5 and the output water tank 6 to replenish the water inside the recovery water tank 5 and the output water tank 6 .

[0034] As a further implementation scheme of the present invention, an outer ring is fixedly connected to the top of the smelting furnace body 2, a sealing water bag 24 is opened inside the outer ring, a slot 25 is opened on the bottom outer wall of the cover 3, and a chamfer is provided at the bottom of the slot 25. The sealing water bag 24 is snap-connected with the slot 25 in the expanded state, a sealing air bag 28 is opened on the top of the smelting furnace body 2, and the sealing air bag 28 is located on the inner side of the outer ring, the sealing air bag 28 is abutted against the bottom wall panel of the cover 3, and an inverted groove 23 is opened on the top of the outer ring, and the inverted groove 23 is used to limit the cover 3.

[0035] In a specific implementation, the sealing airbag 28 is made of a high temperature resistant material, and the material may be high temperature resistant rubber. This technology is prior art and will not be disclosed in detail herein.

[0036] As a further embodiment of the present invention, a plurality of observation windows 13 are provided on the top of the cover 3, and a mounting seat 9 is provided above the cover 3. Both ends of the mounting seat 9 are fixedly connected with telescopic rods, the telescopic end of the telescopic rod is fixedly connected to the mounting seat 9, and the fixed end of the telescopic rod is fixedly connected to the top wall panel of the cover 3. The mounting seat 9 is used to install the cover 3 in the smelting workshop.

[0037] In a specific implementation, a mechanical arm may be added to the top of the mounting seat 9 to facilitate the migration of the cover 3 so that the cover 3 will not be located directly above the smelting furnace body 2 .

[0038] As a further embodiment of the present invention, an electrode feeding device 14 is fixedly connected to the center of the cover 3, a clamp is fixedly connected to the bottom of the electrode feeding device 14, an electrode body 15 is clamped in the clamp, a crucible 22 is arranged inside the smelting furnace body 2, the crucible 22 is used to collect the electrode body 15 under smelting, a water-cooling chamber 17 is arranged between the crucible 22 and the smelting furnace body 2, and the top of the water-cooling chamber 17 is connected to the sealed water bag 24.

[0039] In a specific implementation, the arrangement of the electrode feeding device 14 can adjust the height of the electrode body 15 . This technology is prior art and will not be disclosed in detail herein.

[0040] As a further embodiment of the present invention, a water pump 21 is fixedly connected to the inside of the output water tank 6, and the output end of the water pump 21 is connected to an electromagnetic three-way valve 20. The electromagnetic three-way valve 20 is a one-inlet and two-outlet three-way valve, and its water inlet end is connected to the output end of the water pump 21, and its two water outlet ends are respectively connected to the first water pipe 7 and the second water pipe 18. The end of the first water pipe 7 away from the electromagnetic three-way valve 20 is connected to the sealed water bag 24, and the end of the second water pipe 18 away from the electromagnetic three-way valve 20 passes through the wall panel of the smelting furnace body 2 and is connected to the internal chamber of the crucible 22. The connecting point between the second water pipe 18 and the internal chamber of the crucible 22 is provided with a solenoid valve 19.

[0041] In a specific implementation, the electrode melted at the bottom of the crucible 22 is demolded through the second water pipe 18 , and then the technicians can take out the melted electrode through the top of the melting furnace body 2 .

[0042] As a further implementation scheme of the present invention, the bottom of the sealed water bag 24 is connected with multiple built-in tubes 26, and a pressure valve 27 is provided at the connection between the built-in tubes 26 and the sealed water bag 24. A water outlet pipe 29 is fixedly connected to one side of the bottom of the smelting furnace body 2. The water outlet pipe 29 and the first water pipe 7 are respectively located on both sides of the smelting furnace body 2. The water outlet pipe 29 is connected with the water cooling chamber 17, and the end of the water outlet pipe 29 away from the water cooling chamber 17 passes through the side wall of the recovery water tank 5. The end of the water outlet pipe 29 away from the water cooling chamber 17 is connected with a U-shaped tube 31, and the connection between the two is located at the middle section of the U-shaped tube 31. A water pressure valve 30 is provided inside the water outlet pipe 29.

[0043] In a specific implementation, the pressure valve 27 is provided with a preset pressure value. When the water pressure in the sealed water bag 24 is higher than the preset pressure value, the pressure valve 27 is opened, otherwise the pressure valve 27 is closed. The water pressure valve 30 is provided with a preset water pressure value. When the water pressure in the water cooling chamber 17 is higher than the preset water pressure value, the water pressure valve 30 is opened, otherwise the water pressure valve 30 is closed, and the pressure of the preset pressure value is higher than the pressure of the pre-pressure preset value. The preset water pressure value can fill the water cooling chamber 17 with water.

[0044] As a further embodiment of the present invention, one side of the sealing cover 3 is connected to an air pipe 8, and the end of the air pipe 8 away from the sealing cover 3 is connected to the vacuum machine 4. The bottom of the vacuum machine 4 is fixedly connected to a pad 12, and the pad 12 is fixedly connected to the top wall panel of the recovery water tank 5. The bottom of the pad 12 is fixedly connected to a support rod 16, and the support rod 16 penetrates the top wall panel of the recovery water tank 5, and the end of the support rod 16 away from the pad 12 is fixedly connected to the inner bottom wall panel of the recovery water tank 5.

[0045] In a specific implementation, by setting the pad 12, when the water temperature in the recovery water tank 5 is too high, the pad 12 can effectively block the heat, which is beneficial to avoid overheating of the vacuum machine 4. The pad 12 is made of insulation material, which is a prior art and will not be disclosed in detail here.

[0046] As a further implementation scheme of the present invention, interference columns 32 are fixedly connected to both sides of the support rod 16 , and the two interference columns 32 are respectively located in front of the two water outlet ends of the U-shaped tube 31 .

[0047] In a specific implementation, by arranging the two water outlet ends of the U-shaped tube 31 toward the two interference columns 32 respectively, the impact of the water flow can directly act on the interference columns 32, thereby allowing the interference columns 32 to reduce the probability of resonance of the vacuum machine 4.

[0048] As a further implementation scheme of the present invention, a return water pipe 10 is fixedly connected to both sides of one end of the recovery water tank 5 close to the output water tank 6, and the two ends of the return water pipe 10 are respectively connected to the internal chambers of the recovery water tank 5 and the output water tank 6, and a plurality of heat sinks 11 are fixedly connected to the bottom of the return water pipe 10, and the end of the heat sink 11 away from the return water pipe 10 is fixedly connected to the top wall panel of the base 1.

[0049] In a specific implementation, a fan may be further provided on the side of the heat sink 11 to further improve the heat dissipation efficiency of the heat sink 11 .

[0050] As a further implementation scheme of the present invention, when the cover 3 and the smelting furnace body 2 are sealed, the vacuum machine 4 extracts the air in the chamber formed between the cover 3 and the smelting furnace body 2, so that the vacuum degree of the chamber formed between the cover 3 and the smelting furnace body 2 is less than 0.3Pa.

[0051] In a specific implementation, after the vacuum degree is lower than 0.3 Pa, it is convenient to melt the electrode and then form an alloy.

[0052] Working principle of the present invention:

[0053] When the present invention is in use, first, the electrode body 15 is installed at the bottom end of the electrode feeding device 14, and then the cover 3 is lowered by controlling the extension of the telescopic rod. After the cover 3 is lowered, it will contact the inverted groove 23 at the top of the outer ring, and then under the guidance of the inverted groove 23, it will be lowered inside the outer ring. Finally, the bottom wall plate of the cover 3 is fully abutted against the sealing airbag 28, so as to achieve the purpose of sealing the smelting furnace body 2.

[0054] After the cover 3 is sealed on the top of the smelting furnace body 2, the water pump 21 is turned on. During this process, the output end of the water pump 21 is connected to the first water pipe 7 through the electromagnetic three-way valve 20, and the water pump 21 draws water through the output water tank 6, and then transports the water to the sealed water bag 24. After the water enters the sealed water bag 24, the water in the sealed water bag 24 will increase, and then the sealed water bag 24 will expand. When the sealed water bag 24 expands, the sealed water bag 24 will contact the card slot 25. Under the action of the chamfer at the bottom of the card slot 25, the sealed water bag 24 can squeeze the chamfer at the bottom of the card slot 25 in the expanded state, and then exert a downward component force on the cover 3 through the chamfer, so that the cover 3 and the smelting furnace body 2 are more fully abutted, and the cover 3 and the sealing air bag 28 are more tightly abutted, so that the sealing performance of the cover 3 and the smelting furnace body 2 is effectively guaranteed.

[0055] Secondly, when the sealing water bag 24 expands, the sealing water bag 24 will abut against the bottom side wall of the cover 3. The cover 3 and the melting furnace body 2 are sealed for the second time through the abutment between the sealing water bag 24 and the bottom side wall of the cover 3, thereby further ensuring the sealing between the cover 3 and the melting furnace body 2. This is beneficial to avoid the internal chamber of the cover 3 and the melting furnace body 2, and the air in the outside atmosphere entering the internal chamber between the melting furnace body 2 and the cover 3 during the subsequent vacuum pumping, thereby causing the melting electrode body 15 to fail due to insufficient vacuum.

[0056] As the water pump 21 continues to work, the water pump 21 will increase the water pressure in the sealed water bag 24. When the water pressure in the sealed water bag 24 is higher than the preset pressure value of the pressure valve 27, the pressure valve 27 opens, thereby allowing the water in the sealed water bag 24 to enter the water cooling chamber 17. After the water enters the water cooling chamber 17, the water pressure in the water cooling chamber 17 increases. When the water pressure in the water cooling chamber 17 is higher than the preset water pressure value of the water pressure valve 30, the water pressure valve 30 opens, allowing the water in the water cooling chamber 17 to enter the U-shaped tube 31 and finally enter the recovery water tank 5 for collection and temporary storage.

[0057] After the sealing cover 3 and the smelting furnace body 2 are sealed by the water pump 21, the vacuum machine 4 is turned on to extract the air in the chamber formed by the sealing cover 3 and the smelting furnace body 2 through the vacuum machine 4. The air in the chamber formed by the sealing cover 3 and the smelting furnace body 2 will be extracted into the vacuum machine 4 through the air pipe 8, and then discharged into the outside atmosphere. During the operation of the vacuum machine 4, certain vibration and noise will be generated. In addition, since the vacuum consumable smelting equipment often operates with multiple units, multiple units are prone to resonance with the vacuum machine 4. On the one hand, the resonance will reduce the service life of the vacuum machine 4, and on the other hand, it will also cause the noise of the vacuum machine 4 to further increase, which has certain disadvantages.

[0058] During the operation of the vacuum machine 4, the vibration emitted by the vacuum machine 4 will be transmitted to the support rod 16 through the pad 12, and then transmitted to the water inside the recovery water tank 5 through the support rod 16. After the vibration is transmitted, part of the vibration emitted by the vacuum machine 4 will be transmitted in the water and converted into the internal energy of the water. Through the consumption and conversion of the vibration, on the one hand, it is beneficial to reduce the vibration of the vacuum machine 4, and on the other hand, it can also reduce the noise caused by the vibration of the vacuum machine 4, and play a certain role in shock absorption and noise reduction for the vacuum machine 4. At the same time, by recycling the water in the water tank 5, the overall mass of the vacuum machine 4 and the recovery water tank 5 can be increased, thereby increasing the difficulty of vibration of the vacuum machine 4 and the recovery water tank 5, and further playing a role in shock absorption and noise reduction for the vacuum machine 4 by increasing the difficulty of vibration.

[0059] During the operation of the vacuum machine 4, the water pump 21 is also continuously in operation. When the water output by the water pump 21 enters the recovery water tank 5 through the U-shaped tube 31, the water will generate a certain amount of kinetic energy under the action of the water pressure valve 30, thereby causing the water flow to have a certain impact force after leaving the U-shaped tube 31. When the water leaves the U-shaped tube 31 and enters the recovery water tank 5, the water will impact on the interference column 32. The impact of the water flow causes the interference column 32 to fluctuate to a certain extent. After the fluctuation, the interference column 32 will be transmitted to the pad 1 through the support rod 16. 2, and then transmitted to the vacuum machine 4, so that the vacuum machine 4 is affected by a certain external force. The external force generated by the interference column 32 is used to reduce the probability of resonance between the vacuum machine 4 and other units of the vacuum consumable melting equipment, and the resonance is inhibited to a certain extent. Through the setting of the interference column 32, the resonance is inhibited to a certain extent, which is beneficial to avoid the reduction of the service life of the vacuum machine 4 due to resonance. Secondly, it is also beneficial to avoid the further expansion of the vibration and noise generated by the vacuum machine 4 due to resonance.

[0060] It should be noted that the water level in the recovery water tank 5 is higher than the horizontal position of the interference column 32. When water enters the recovery water tank 5 through the U-shaped tube 31, the water flow will impact the water in the recovery water tank 5, which is helpful to avoid the occurrence of noise caused by water directly impacting the interference column 32.

[0061] When the air pressure in the chamber between the cover 3 and the smelting furnace body 2 is lower than 0.3 Pa, power is supplied to the electrode body 15, so that the electrode body 15 melts and then drips into the crucible 22. The electrode body 15 generates a large amount of heat during the melting process. At this time, water is continuously supplied through the water pump 21, so that water continuously flows in the water cooling chamber 17, thereby achieving the purpose of cooling the crucible 22. On the one hand, it is beneficial to solidify the melted electrode inside the crucible 22, and on the other hand, it can also dissipate heat from the cover 3 and the internal chamber of the smelting furnace body 2 through the flow of water.

[0062] As the water pump 21 continues to work, the water in the output water tank 6 will decrease, while the water in the recovery water tank 5 will increase. When the water in the recovery water tank 5 increases to a level higher than the return water pipe 10, the water in the recovery water tank 5 will flow into the return water pipe 10, and finally flow back to the output water tank 6 through the return water pipe 10. The heat of the water after passing through the water cooling chamber 17 will rise. At this time, the heat of the water in the recovery water tank 5 will rise. In the process of the water passing through the return water pipe 10, the heat of the water will be conducted to the heat sink 11. In the process of the water flowing back to the output water tank 6 through the return water pipe 10, the temperature of the water can be effectively dissipated through the heat sink 11, thereby reducing the temperature of the water. By circulating water between the output water tank 6 and the recovery water tank 5, on the one hand, the utilization rate of water can be improved and the waste of water resources can be reduced. On the other hand, the purpose of dissipating heat to water can be achieved through the return water pipe 10.

[0063] After the electrode body 15 is smelted, air is supplied to the chamber between the cover 3 and the smelting furnace body 2 through the vacuum machine 4. After the air supply is completed, the water pump 21 is closed so that the water in the sealed water bag 24 can flow back to the output water tank 6 through the first water pipe 7. After the water in the sealed water bag 24 flows back, the cover 3 is opened, and then the output end of the water pump 21 is connected to the second water pipe 18 by controlling the electromagnetic three-way valve 20. Then, the water pump 21 is restarted to supply water to the second water pipe 18. At the same time, the electromagnetic valve 19 is opened so that the water pump 21 supplies water to the inside of the crucible 22 through the second water pipe 18. The smelted electrode is demoulded by supplying water to the bottom of the crucible 22, so that the smelted electrode is separated from the crucible 22, which is convenient for taking out the smelted electrode.

[0064] It should be noted that the electrode body 15 is a consumable electrode used for preparing titanium alloy. This technology is prior art and will not be disclosed in detail here. The smelted electrode described in the present invention is the titanium alloy formed after the consumable electrode is melted.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A vacuum consumable melting furnace for melting titanium alloys, comprising a base (1) and a melting furnace body (2), wherein the melting furnace body (2) is fixedly connected to the top center of the base (1), and is characterized in that: A recovery water tank (5) and an output water tank (6) are fixedly connected to both sides of the top of the base (1), respectively; a sealing water bag (24) and a sealing air bag (28) for sealing are arranged on the top of the smelting furnace body (2); the output water tank (6) is used to supply water to the sealing water bag (24); a water cooling chamber (17) is provided inside the smelting furnace body (2); the output water tank (6) is also used to supply water to the water cooling chamber (17); a cover (3) is installed on the top of the smelting furnace body (2) in a lifting manner; the sealing water bag (24) is movably connected to the outer wall of the bottom end of the cover (3); one side of the cover (3) is connected to a vacuum machine (4); the vacuum machine (4) is arranged on the top of the recovery water tank (5); and the recovery water tank (5) is used to reduce the vibration and noise of the vacuum machine (4).

2. The vacuum consumable melting furnace for titanium alloy melting according to claim 1, characterized in that: The top of the smelting furnace body (2) is fixedly connected with an outer ring, a sealing water bag (24) is arranged inside the outer ring, a slot (25) is arranged on the outer wall of the bottom of the cover (3), the bottom of the slot (25) is provided with a chamfer, the sealing water bag (24) is engaged with the slot (25) in an expanded state, a sealing air bag (28) is arranged on the top of the smelting furnace body (2), and the sealing air bag (28) is located on the inner side of the outer ring, the sealing air bag (28) is in contact with the bottom wall plate of the cover (3), and a reverse groove 23 is arranged on the top of the outer ring, and the reverse groove 23 is used to limit the cover 3.

3. The vacuum consumable melting furnace for titanium alloy melting according to claim 2, characterized in that: A plurality of observation windows (13) are arranged on the top of the cover (3), a mounting seat (9) is arranged above the cover (3), both ends of the mounting seat (9) are fixedly connected with telescopic rods, the telescopic end of the telescopic rod is fixedly connected to the mounting seat (9), and the fixed end of the telescopic rod is fixedly connected to the top wall plate of the cover (3), and the mounting seat (9) is used to install the cover (3) in a smelting workshop.

4. The vacuum consumable melting furnace for titanium alloy melting according to claim 2, characterized in that: An electrode feeding device (14) is fixedly connected to the center of the cover (3), a clamp is fixedly connected to the bottom of the electrode feeding device (14), an electrode body (15) is clamped in the clamp, a crucible (22) is arranged inside the smelting furnace body (2), the crucible (22) is used to collect the electrode body (15) under smelting, a water cooling chamber (17) is arranged between the crucible (22) and the smelting furnace body (2), and the top of the water cooling chamber (17) is connected to the sealing water bag (24).

5. The vacuum consumable melting furnace for titanium alloy melting according to claim 4, characterized in that: A water pump (21) is fixedly connected to the inside of the output water tank (6), and the output end of the water pump (21) is connected to an electromagnetic three-way valve (20). The electromagnetic three-way valve (20) is a one-inlet and two-outlet three-way valve, and its water inlet end is connected to the output end of the water pump (21), and its two water outlet ends are respectively connected to a first water pipe (7) and a second water pipe (18). One end of the first water pipe (7) away from the electromagnetic three-way valve (20) is connected to a sealed water bag (24), and one end of the second water pipe (18) away from the electromagnetic three-way valve (20) passes through the wall plate of the smelting furnace body (2) and is connected to the internal chamber of the crucible (22). A solenoid valve (19) is provided at the connection between the second water pipe (18) and the internal chamber of the crucible (22).

6. The vacuum consumable melting furnace for titanium alloy melting according to claim 5, characterized in that: The bottom of the sealed water bag (24) is connected to a plurality of built-in pipes (26), and a pressure valve (27) is provided at the connection point between the built-in pipes (26) and the sealed water bag (24). A water outlet pipe (29) is fixedly connected to one side of the bottom of the smelting furnace body (2). The water outlet pipe (29) and the first water pipe (7) are respectively located on both sides of the smelting furnace body (2). The water outlet pipe (29) is connected to the water cooling chamber (17), and one end of the water outlet pipe (29) away from the water cooling chamber (17) passes through the side wall of the recovery water tank (5). One end of the water outlet pipe (29) away from the water cooling chamber (17) is connected to a U-shaped pipe (31), and the connection point between the two is located at the middle section of the U-shaped pipe (31). A water pressure valve (30) is provided inside the water outlet pipe (29).

7. The vacuum consumable melting furnace for titanium alloy melting according to claim 6, characterized in that: One side of the sealing cover (3) is connected to an air pipe (8), and one end of the air pipe (8) away from the sealing cover (3) is connected to the vacuum machine (4). The bottom of the vacuum machine (4) is fixedly connected to a pad (12), and the pad (12) is fixedly connected to the top wall plate of the recovery water tank (5). The bottom of the pad (12) is fixedly connected to a support rod (16), and the support rod (16) passes through the top wall plate of the recovery water tank (5), and one end of the support rod (16) away from the pad (12) is fixedly connected to the inner bottom wall plate of the recovery water tank (5).

8. The vacuum consumable melting furnace for titanium alloy melting according to claim 7, characterized in that: Interference columns (32) are fixedly connected to both sides of the support rod (16), and the two interference columns (32) are respectively located in front of the two water outlet ends of the U-shaped tube (31).

9. The vacuum consumable melting furnace for titanium alloy melting according to claim 7, characterized in that: The recovery water tank (5) has a return water pipe (10) fixedly connected to both sides of one end close to the output water tank (6); the two ends of the return water pipe (10) are respectively connected to the internal chambers of the recovery water tank (5) and the output water tank (6); a plurality of heat sinks (11) are fixedly connected to the bottom of the return water pipe (10); and the end of the heat sink (11) away from the return water pipe (10) is fixedly connected to the top wall plate of the base (1).

10. The vacuum consumable melting furnace for titanium alloy melting according to claim 1, characterized in that: When the cover (3) and the smelting furnace body (2) are sealed, the vacuum machine (4) extracts the air in the chamber formed between the cover (3) and the smelting furnace body (2), so that the vacuum degree of the chamber formed between the cover (3) and the smelting furnace body (2) is less than 0.3 Pa.

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