A vacuum consumable arc furnace for titanium alloy production

Abstract

The invention discloses a vacuum consumable electric arc furnace for titanium alloy production, and relates to the technical field of electric arc furnaces. The vacuum consumable electric arc furnace comprises a furnace body, a lifting device, a support frame and an electrode rod. The lifting device is arranged above the furnace body, and the support frame is arranged on the side of the furnace body. Compared with the current vacuum consumable electric arc furnace, the invention is provided with a temperature controller. When the temperature of cooling water delivered by an external cooling system does not meet the standard, the cooling water is cooled for a second time by the temperature controller. When the external cooling system fails due to various reasons so that the cooling water cannot flow normally, the temperature controller, the sealing component and the liquid pump can prevent the copper crucible and the furnace body from being damaged by overheating. The invention is also provided with a descaling mechanism. Compared with the current descaling components, the invention can prevent scale debris from scattering into the cooling water when removing scale on the outer wall of the copper crucible, so as to avoid the difficulty in direct recycling of the subsequent cooling water.

Description

Technical Field

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

[0002] A vacuum consumable arc furnace is a device that uses the high temperature generated by an electric arc to melt metal. In the production of titanium alloys, a pre-made titanium alloy consumable electrode is generally used as the anode and a water-cooled copper crucible is used as the cathode. In a vacuum environment, a high voltage is applied between the electrode and the crucible to induce an arc discharge. The high temperature generated by the arc causes the titanium alloy material at the end of the electrode to melt rapidly. The molten liquid metal drips into the copper crucible under the action of gravity, forming a molten pool and gradually solidifying into an ingot, thereby realizing the melting and casting of titanium alloys.

[0003] At present, the vacuum consumable electric arc furnace usually uses a water cooling system to cool the copper crucible. For example, the patents "CN219433758U vacuum consumable electric arc furnace" and "CN210268152U a cooling mechanism in a vacuum consumable electric arc furnace for titanium ingot production" disclose a technical solution for cooling the copper crucible using water cooling technology. However, in the actual working process, after the cooling water is used for a long time, it is easy to produce a layer of scale on the surface of the crucible, thereby affecting the cooling effect of the copper crucible. At present, in order to improve work efficiency, a motor and a scraper are sometimes arranged outside the copper crucible to remove the scale on the surface of the copper crucible through the scraper. However, this method of removing scale will cause scale debris to escape into the cooling water, so that the subsequent recycling of the cooling water is difficult. In addition, the current vacuum consumable electric arc furnace usually has no measures to prevent cooling system failures. When the cooling system fails and the cooling water cannot flow normally, the measure usually taken is to shut down the machine for maintenance, but this operation mode greatly affects work efficiency. Summary of the invention

[0004] The object of the present invention is to provide a vacuum consumable arc furnace for producing titanium alloys to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: the vacuum consumable arc furnace comprises a furnace body, a lifting device, a support frame and an electrode rod, the lifting device is arranged above the furnace body, the support frame is arranged on the side of the furnace body, the top of the support frame is connected with the top of the lifting device, a fan is arranged on the support frame, the furnace body is connected to the fan through an air outlet pipe, and before working, the air in the furnace body is extracted by the fan to make the working area in the furnace body in a vacuum state, a mounting frame is arranged at the upper end of the interior of the furnace body, a base is arranged at the lower end of the interior of the furnace body, and a copper crucible is arranged between the mounting frame and the base. The invention relates to a copper crucible and a cooler, wherein the upper end of the cooler is provided with a water outlet pipe, the interior of the base is provided with a temperature controller, the upper end of the temperature controller is connected with the cooler through a connecting pipe, and the lower end of the temperature controller is connected with an external cooling system through a water inlet pipe. The copper crucible in the present invention is arranged inside the cooler, a clamping claw is arranged below the lifting device, and the electrode rod is arranged below the clamping claw and is located in the copper crucible. During operation, cooling water is transported into the cooler through the external cooling system, and the lifting and lowering of the electrode rod is controlled by the lifting device. The molten metal droplets are rapidly solidified in the copper crucible by the cooling water to form a titanium metal ingot.

[0006] Furthermore, a temperature measuring element is arranged in the connecting pipe, a guide groove is arranged inside the temperature controller, the cross-section of the guide groove is a wavy structure, a plurality of groups of refrigeration elements are arranged in the guide groove, the inlet end of the guide groove is connected with the water inlet pipe, and the outlet end of the guide groove is connected with the cooler through the connecting pipe. The cooling water delivered by the external cooling system will flow along the water inlet pipe-guide groove-connecting pipe before entering the cooler. The temperature measuring element in the connecting pipe is used to monitor whether the cooling water delivered by the external cooling system meets the standard. When the temperature of the delivered cooling water meets the standard, a plurality of groups of refrigeration elements are in a non-working state. When the temperature of the delivered cooling water does not meet the standard, the cooling water is cooled for a second time through the plurality of groups of refrigeration elements to avoid affecting subsequent work.

[0007] Furthermore, the cooler is provided with a first cooling chamber, a second cooling chamber and a sealing assembly, the second cooling chamber is provided outside the first cooling chamber, the second cooling chamber is always filled with cooling water, the sealing assembly is provided above the second cooling chamber, the connection state between the first cooling chamber and the second cooling chamber is controlled by the sealing assembly, the copper crucible is provided in the first cooling chamber, the water outlet pipe is connected to the first cooling chamber, the water outlet pipe is provided with a first valve, a liquid pump is further provided in the base, the liquid inlet end of the liquid pump is connected to the second cooling chamber, The water inlet pipe is a three-way structure, one end of the water inlet pipe is connected to the inlet end of the guide groove, the other end of the water inlet pipe is connected to the external cooling system, the last end of the water inlet pipe is connected to the liquid outlet end of the liquid pump, the end of the water inlet pipe close to the external cooling system is provided with a first one-way valve, and the end of the water inlet pipe close to the liquid pump is provided with a second one-way valve (that is, the cooling water transported by the external cooling system can only flow through the thermostat but not through the liquid pump, and similarly, the liquid transported by the liquid pump can only flow through the thermostat but not through the external cooling system). In normal During operation, the first valve on the water outlet pipe is in an open state, the first cooling chamber and the second cooling chamber are in a cut-off state, and the cooling water transported by the external cooling system flows along the first one-way valve-water inlet pipe-temperature controller-first cooling chamber-water outlet pipe. During operation, if the external cooling system fails due to various reasons, so that the cooling water cannot flow normally, the present invention can close the first valve on the water outlet pipe, and then open the sealing component, the liquid pump and several groups of refrigeration elements, so that the first cooling chamber is connected with the second cooling chamber through the sealing component, and the cooling water in the first cooling chamber flows along the second cooling chamber-liquid pump-second one-way valve-water inlet pipe-temperature controller-first cooling chamber-second cooling chamber through the liquid pump. During the flow of the cooling water in the first cooling chamber, the cooling water is cooled by several groups of refrigeration elements to ensure the normal operation and avoid damage to the copper crucible and the furnace body due to overheating. Through the above technical scheme, the present invention has been greatly improved in terms of safety and applicability on the one hand, and on the other hand, it avoids stopping for maintenance when a cooling system failure occurs, thereby maintaining work efficiency.

[0008] Furthermore, a through hole is provided at the upper end of the first cooling chamber, and the sealing assembly includes a first electromagnet and a sealing frame, the first electromagnet is arranged at one end of the sealing chamber away from the through hole, and the sealing frame is arranged at one end of the sealing chamber close to the through hole, and the sealing frame is movably installed in the sealing chamber through a plurality of groups of sealing springs. When the present invention is working normally, the sealing frame always blocks the through hole at the upper end of the first cooling chamber. When the present invention requires the first cooling chamber to be connected with the second cooling chamber, the staff can turn on the first electromagnet to generate a group of magnetic fields that attract the sealing frame through the first electromagnet, so that the sealing frame moves up, and when the sealing frame no longer blocks the through hole, the first cooling chamber can be connected with the second cooling chamber.

[0009] Furthermore, a motor is arranged above the mounting frame, a reversing assembly is arranged inside the mounting frame, a descaling mechanism is arranged inside the first cooling chamber, and the descaling mechanism is fixedly installed below the reversing assembly. In the present invention, the descaling mechanism does not contact the copper crucible when not working, and the descaling mechanism is driven by the motor and the reversing assembly to rotate around the copper crucible, and the outer wall surface of the copper crucible is descaled at a fixed point by the descaling mechanism. Compared with the current descaling components, the present invention can prevent scale debris from scattering into the cooling water when removing scale from the outer wall of the copper crucible, thereby avoiding the difficulty in directly recycling the subsequent cooling water.

[0010] Furthermore, the reversing assembly includes a transmission gear and a turntable, the upper end of the turntable is provided with teeth, and the transmission gear is provided with several groups, and the several groups of transmission gears are evenly arranged on the outside of the turntable, one group of transmission gears is connected to the motor, and the motor drives one group of transmission gears to rotate, thereby causing the turntable to rotate, to ensure that the descaling mechanism can descaling various parts of the outer wall surface of the copper crucible.

[0011] Furthermore, the descaling mechanism includes a first descaling frame, which is provided with two groups. The two groups of first descaling frames are relatively arranged at the two ends below the reversing assembly, and the first descaling frame is provided with a mounting groove at one end close to the copper crucible, and a first movable frame is provided at one end of the mounting groove close to the copper crucible, and a second electromagnet is provided at one end of the mounting groove away from the copper crucible. The first movable frame is movably installed in the mounting groove through a first compression spring, and a first ultrasonic element is provided on the first movable frame. When the descaling mechanism in the present invention is in a non-working state, the first movable frame is located in the mounting groove and does not contact the copper crucible. When the descaling mechanism needs to be operated, the staff can turn on the second electromagnet to generate a group of magnetic fields that repel the first movable frame. At this time, the first movable frame extends out of the mounting groove and contacts the copper crucible, and then the first ultrasonic element is turned on to remove the scale on the outer wall of the copper crucible through the first ultrasonic element. Compared with rubbing the scale on the outer wall of the copper crucible with a scraper, the present invention can effectively avoid damage to the outer wall of the copper crucible.

[0012] Furthermore, the descaling mechanism also includes a second descaling rack, which is arranged below the two groups of first descaling racks, a second ultrasonic element is arranged at the upper end of the second descaling rack, a storage groove is arranged inside the second descaling rack, a second movable rack is arranged at the upper end of the storage groove, a third electromagnet is arranged at the lower end of the storage groove, and the second movable rack is movably installed in the storage groove through a second compression spring. When it is necessary to clean the bottom surface of the copper crucible, the staff can turn on the third electromagnet to generate a group of magnetic fields that repel the second movable rack. At this time, the second movable rack contacts the bottom surface of the copper crucible, and then the second ultrasonic element is turned on to remove the scale on the bottom surface of the copper crucible.

[0013] Furthermore, a drainage channel and a fixed pipe are also provided in the first descaling rack, one end of the fixed pipe passes through the first movable rack, and the other end of the fixed pipe is fixedly installed in the installation groove and aligned with the drainage channel, a third one-way valve is provided at the upper end of the first movable rack, a drainage pipe is provided below the second descaling rack, one end of the drainage pipe is provided with a second valve and extends out of the furnace body, a drainage channel is provided in the second descaling rack, the drainage channel is aligned with the drainage channel, and the drainage channel is connected with the drainage pipe through the drainage pipe.

[0014] Furthermore, the drainage channel is a three-way structure, and the left and right ends of the drainage channel are respectively connected to the drainage channels in the two groups of first descaling racks, and the middle position of the drainage channel runs through the second descaling rack. When the descaling mechanism in the present invention is not working, the second valve on the drainage pipe is in a closed state. When the descaling mechanism is working, the staff can connect the drainage pipe to the external water suction pump and open the second valve, and then synchronously open the second electromagnet and the third electromagnet to make the first movable frame contact with the outer wall surface of the copper crucible, and the second movable frame contact with the bottom surface of the copper crucible. When the first ultrasonic element and the second ultrasonic element vibrate and disperse the scale attached to the outer wall surface and the bottom surface of the copper crucible, the staff can discharge the cooling water rich in scale to the outside through the external water suction pump (the flow path of the cooling water rich in scale is as follows: drainage channel-drainage channel-drainage pipe-drainage pipe). After the scale in a certain area on the outer wall surface of the copper crucible is cleaned, the descaling mechanism is driven to rotate by the motor and the reversing component, and the next area on the outer wall surface of the copper crucible is cleaned in the same way. The scale in the domain is cleaned. Finally, the present invention can set a camera, an ultrasonic thickness gauge and other instruments in the first cooling chamber to monitor the changes in the scale on the outer wall of the copper crucible. When the thickness of the scale on the outer wall of the copper crucible affects the cooling of the titanium metal during operation, the staff can directly open the descaling mechanism to clean the scale on the outer wall of the copper crucible, and then discharge the cooling water rich in scale to the outside through the external water suction pump. Since the present invention is provided with a third one-way valve at the upper end of the first movable frame, when the external water suction pump discharges the cooling water rich in scale to the outside, the cooling water in the first cooling chamber will continue to flow from the third one-way valve into the sealed cavity formed by the first movable frame and the outer wall of the copper crucible (at this time, the external cooling system needs to increase the cooling water transported to the first cooling chamber to ensure that the cooling water in the first cooling chamber is always maintained in a normal state). Through the above technical scheme, the present invention can clean the scale on the outer wall of the copper crucible at any time without affecting the cooling of the copper crucible, and during the cleaning process, scale debris will not escape into the cooling water.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: compared with the current vacuum consumable arc furnace, the present invention is provided with a temperature controller. When the temperature of the cooling water delivered by the external cooling system does not meet the standard, the cooling water is cooled down for a second time through the temperature controller to avoid affecting subsequent work. When the external cooling system fails due to various reasons during operation, so that the cooling water cannot flow normally, the present invention can make the cooling water in the first cooling chamber flow and cool down along the second cooling chamber-liquid pump-second one-way valve-water inlet pipe-temperature controller-first cooling chamber-second cooling chamber through the temperature controller, sealing component and liquid pump. On the one hand, the copper crucible and the furnace body are prevented from being damaged due to overheating. On the other hand, the machine is prevented from being shut down for maintenance when a cooling system failure occurs, thereby maintaining work efficiency. The present invention is also provided with a reversing group The present invention provides a component and a descaling mechanism, wherein the descaling mechanism is driven by a motor and a reversing component to rotate around the copper crucible, and the outer wall of the copper crucible is descaled at a fixed point by the descaling mechanism. Compared with the existing descaling components, the present invention can prevent scale debris from scattering into the cooling water when removing scale on the outer wall of the copper crucible, thereby avoiding the difficulty in directly recycling the subsequent cooling water. Finally, during operation, if the thickness of the scale on the outer wall of the copper crucible affects the cooling of the titanium metal, the present invention can directly clean the scale on the outer wall of the copper crucible through the descaling mechanism. When the descaling mechanism is working, the cooling water in the first cooling chamber will continue to flow from the third one-way valve into the sealed cavity formed by the first movable frame and the outer wall of the copper crucible, thereby enabling the present invention to clean the scale on the outer wall of the copper crucible at any time without affecting the cooling of the copper crucible. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the internal structure of the furnace body of the present invention;

[0018] Figure 3 is a cross-sectional view of a furnace body of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the temperature controller of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the cooler of the present invention;

[0021] Figure 6 It is a schematic diagram of the connection between the descaling mechanism and the reversing assembly of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the descaling mechanism of the present invention;

[0023] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the middle A part;

[0024] Fig. 9 It is a schematic diagram of the position of the descaling mechanism of the present invention when it is working;

[0025] Fig.10 It is a schematic diagram of the structure of the first movable frame of the present invention;

[0026] Fig.11 It is a schematic diagram of the internal structure of the second descaling rack of the present invention.

[0027] In the figure: 1, furnace body; 11, mounting frame; 111, motor; 112, transmission gear; 113, turntable; 12, base; 13, drain pipe; 14, temperature controller; 141, water inlet pipe; 142, connecting pipe; 143, refrigeration element; 144, guide groove; 15, copper crucible; 16, cooler; 161, water outlet pipe; 162, first cooling chamber; 1621, through hole; 163, second cooling chamber; 164, first electromagnet; 165, sealing frame; 17, air outlet pipe; 18 , liquid pump; 19, descaling mechanism; 191, first descaling frame; 1911, drainage channel; 1912, first movable frame; 1913, fixed pipe; 1914, first ultrasonic element; 1915, second electromagnet; 192, second descaling frame; 1921, second ultrasonic element; 1922, drainage channel; 1923, second movable frame; 1924, third electromagnet; 193, drainage pipe; 2, lifting device; 21, clamp; 3, support frame; 4, fan; 5, electrode rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example: Figure 1-Figure 3As shown, the present invention provides a technical solution, a vacuum consumable arc furnace for titanium alloy production, the vacuum consumable arc furnace comprises a furnace body 1, a lifting device 2, a support frame 3 and an electrode rod 5, the lifting device 2 is arranged above the furnace body 1, the support frame 3 is arranged on the side of the furnace body 1, the top of the support frame 3 is connected to the top of the lifting device 2, a fan 4 is arranged on the support frame 3, the furnace body 1 is connected to the fan 4 through an exhaust pipe 17, before working, the air in the furnace body 1 is extracted by the fan 4, so that the working area in the furnace body 1 is in a vacuum state, the upper end of the furnace body 1 is provided with a mounting frame 11, the lower end of the furnace body 1 is provided with a base 12, and a copper crucible 15 is arranged between the mounting frame 11 and the base 12 and a cooler 16, a water outlet pipe 161 is provided at the upper end of the cooler 16, a temperature controller 14 is provided inside the base 12, the upper end of the temperature controller 14 is connected to the cooler 16 through a connecting pipe 142, and the lower end of the temperature controller 14 is connected to an external cooling system through a water inlet pipe 141. In the present invention, a copper crucible 15 is arranged inside the cooler 16, a clamping claw 21 is provided below the lifting device 2, and an electrode rod 5 is arranged below the clamping claw 21 and is located in the copper crucible 15. During operation, cooling water is transported to the cooler 16 through the external cooling system, and the lifting device 2 controls the lifting of the electrode rod 5. The cooling water causes the molten metal droplets to solidify rapidly in the copper crucible 15 to form a titanium metal ingot.

[0030] like Figure 3-Figure 5 As shown, a temperature measuring element is arranged in the connecting pipe 142, a guide groove 144 is arranged inside the temperature controller 14, the cross section of the guide groove 144 is a wavy structure, a plurality of groups of refrigeration elements 143 are arranged in the guide groove 144, the inlet end of the guide groove 144 is connected with the water inlet pipe 141, and the outlet end of the guide groove 144 is connected with the cooler 16 through the connecting pipe 142. The cooling water delivered by the external cooling system will flow along the water inlet pipe 141-guide groove 144-connecting pipe 142 before entering the cooler 16. The temperature measuring element in the connecting pipe 142 is used to monitor whether the cooling water delivered by the external cooling system meets the standard. When the temperature of the delivered cooling water meets the standard, the plurality of groups of refrigeration elements 143 are in a non-working state. When the temperature of the delivered cooling water does not meet the standard, the cooling water is cooled for a second time through the plurality of groups of refrigeration elements 143 to avoid affecting subsequent work.

[0031] like Figure 3-Figure 5As shown, the cooler 16 is provided with a first cooling chamber 162, a second cooling chamber 163 and a sealing assembly, the second cooling chamber 163 is arranged outside the first cooling chamber 162, the second cooling chamber 163 is always filled with cooling water, the sealing assembly is arranged above the second cooling chamber 163, and the communication state between the first cooling chamber 162 and the second cooling chamber 163 is controlled by the sealing assembly, the copper crucible 15 is arranged in the first cooling chamber 162, the water outlet pipe 161 is connected to the first cooling chamber 162, the water outlet pipe 161 is provided with a first valve, and the base 12 is further provided with a liquid pump 18, and the liquid inlet end of the liquid pump 18 is connected to the second cooling chamber 163, The water inlet pipe 141 is a three-way structure, one end of the water inlet pipe 141 is connected to the inlet end of the guide groove 144, the other end of the water inlet pipe 141 is connected to the external cooling system, and the last end of the water inlet pipe 141 is connected to the liquid outlet end of the liquid pump 18. A first one-way valve is provided at one end of the water inlet pipe 141 close to the external cooling system, and a second one-way valve is provided at one end of the water inlet pipe 141 close to the liquid pump 18 (that is, the cooling water transported by the external cooling system can only flow through the thermostat 14 but cannot flow through the liquid pump 18. Similarly, the liquid transported by the liquid pump 18 can only flow through the thermostat 14 but cannot flow through the external cooling system). When the present invention is working normally, the outlet The first valve on the water pipe 161 is in an open state, the first cooling chamber 162 and the second cooling chamber 163 are in a cut-off state, and the cooling water delivered by the external cooling system flows along the first one-way valve-water inlet pipe 141-temperature controller 14-first cooling chamber 162-water outlet pipe 161. When the external cooling system fails due to various reasons during operation, so that the cooling water cannot flow normally, the present invention can close the first valve on the water outlet pipe 161, and then open the sealing component, the liquid pump 18 and the plurality of groups of refrigeration elements 143, so that the first cooling chamber 162 is connected to the second cooling chamber 163 through the sealing component, and the liquid pump 18 is used to connect the first cooling chamber 162 to the second cooling chamber 163. 18 makes the cooling water in the first cooling chamber 162 flow along the second cooling chamber 163-liquid pump 18-second one-way valve-water inlet pipe 141-temperature controller 14-first cooling chamber 162-second cooling chamber 163. During the flow of the cooling water in the first cooling chamber 162, the cooling water is cooled by several groups of refrigeration elements 143 to ensure the normal operation and avoid damage to the copper crucible 15 and the furnace body 1 due to overheating. Through the above technical scheme, the present invention has been greatly improved in terms of safety and applicability on the one hand, and on the other hand, it avoids stopping for maintenance when a cooling system failure occurs, thereby maintaining work efficiency.

[0032] like Figure 5As shown, a through hole 1621 is provided at the upper end of the first cooling chamber 162, and the sealing assembly includes a first electromagnet 164 and a sealing frame 165. The first electromagnet 164 is arranged at one end of the sealing chamber away from the through hole 1621, and the sealing frame 165 is arranged at one end of the sealing chamber close to the through hole 1621. The sealing frame 165 is movably installed in the sealing chamber through a plurality of groups of sealing springs. When the present invention is working normally, the sealing frame 165 always blocks the through hole 1621 at the upper end of the first cooling chamber 162. When the present invention requires the first cooling chamber 162 to be connected with the second cooling chamber 163, the staff can turn on the first electromagnet 164, and generate a group of magnetic fields that attract the sealing frame 165 through the first electromagnet 164, so that the sealing frame 165 moves up. When the sealing frame 165 no longer blocks the through hole 1621, the first cooling chamber 162 and the second cooling chamber 163 can be connected.

[0033] like Figure 2 , Figure 3 , Figure 6 As shown, a motor 111 is arranged above the mounting frame 11, a reversing assembly is arranged inside the mounting frame 11, a descaling mechanism 19 is arranged inside the first cooling chamber 162, and the descaling mechanism 19 is fixedly installed below the reversing assembly. In the present invention, the descaling mechanism 19 does not contact the copper crucible 15 when not working, and the descaling mechanism 19 is driven by the motor 111 and the reversing assembly to rotate around the copper crucible 15, and the outer wall surface of the copper crucible 15 is descaled at a fixed point by the descaling mechanism 19. Compared with the existing descaling components, the present invention can prevent scale debris from scattering into the cooling water when removing scale from the outer wall of the copper crucible 15, thereby avoiding the difficulty in direct recycling of the subsequent cooling water.

[0034] like Figure 6 As shown, the reversing assembly includes a transmission gear 112 and a turntable 113. The upper end of the turntable 113 is provided with teeth. The transmission gear 112 is provided with a plurality of groups. The plurality of groups of transmission gears 112 are evenly arranged on the outside of the turntable 113. One group of transmission gears 112 is connected to the motor 111. The motor 111 drives one group of transmission gears 112 to rotate, thereby causing the turntable 113 to rotate, so as to ensure that the descaling mechanism 19 can descaling various locations on the outer wall surface of the copper crucible 15.

[0035] like Figure 6-Figure 9As shown, the descaling mechanism 19 includes a first descaling frame 191, and the first descaling frame 191 is provided with two groups. The two groups of first descaling frames 191 are relatively arranged at the two ends below the reversing assembly. The end of the first descaling frame 191 close to the copper crucible 15 is provided with a mounting groove, and the end of the mounting groove close to the copper crucible 15 is provided with a first movable frame 1912, and the end of the mounting groove away from the copper crucible 15 is provided with a second electromagnet 1915. The first movable frame 1912 is movably installed in the mounting groove through a first compression spring, and a first ultrasonic element 1914 is provided on the first movable frame 1912. The descaling mechanism 19 of the present invention When in a non-working state, the first movable frame 1912 is located in the installation slot and is not in contact with the copper crucible 15. When the descaling mechanism 19 needs to be operated, the staff can turn on the second electromagnet 1915, and generate a set of magnetic fields that repel the first movable frame 1912 through the second electromagnet 1915. At this time, the first movable frame 1912 extends out of the installation slot and contacts with the copper crucible 15. Then the first ultrasonic element 1914 is turned on, and the scale on the outer wall of the copper crucible 15 is removed by the first ultrasonic element 1914. Compared with using a scraper to rub the scale on the outer wall of the copper crucible 15, the present invention can effectively avoid damage to the outer wall of the copper crucible 15.

[0036] like Figure 6 , Figure 7 , Fig.11 As shown, the descaling mechanism 19 also includes a second descaling frame 192, which is arranged below the two groups of first descaling frames 191, and a second ultrasonic element 1921 is arranged at the upper end of the second descaling frame 192. A storage groove is arranged inside the second descaling frame 192, and a second movable frame 1923 is arranged at the upper end inside the storage groove, and a third electromagnet 1924 is arranged at the lower end inside the storage groove. The second movable frame 1923 is movably installed in the storage groove through a second compression spring. When it is necessary to clean the bottom surface of the copper crucible 15, the staff can turn on the third electromagnet 1924, and generate a group of magnetic fields that repel the second movable frame 1923 through the third electromagnet 1924. At this time, the second movable frame 1923 contacts the bottom surface of the copper crucible 15, and then the second ultrasonic element 1921 is turned on to remove the scale on the bottom surface of the copper crucible 15.

[0037] like Figure 6-Figure 11As shown, a drainage channel 1911 and a fixed pipe 1913 are also provided in the first descaling frame 191, one end of the fixed pipe 1913 passes through the first movable frame 1912, and the other end of the fixed pipe 1913 is fixedly installed in the installation groove and aligned with the drainage channel 1911, a third one-way valve is provided at the upper end of the first movable frame 1912, a drainage pipe 13 is provided at the lower part of the second descaling frame 192, one end of the drainage pipe 13 is provided with a second valve and extends out of the furnace body 1, a drainage channel 1922 is provided in the second descaling frame 192, the drainage channel 1922 is aligned with the drainage channel 1911, and the drainage channel 1922 is connected with the drainage pipe 13 through the drainage pipe 193.

[0038] like Fig.11 As shown, the drainage channel 1922 is a three-way structure, the left and right ends of the drainage channel 1922 are respectively connected to the drainage channels 1911 in the two groups of first descaling racks 191, and the middle position of the drainage channel 1922 runs through the second descaling rack 192.

[0039] When the descaling mechanism 19 of the present invention is not working, the second valve on the drain pipe 13 is in a closed state. When the descaling mechanism 19 is working, the staff can connect the drain pipe 13 to the external water suction pump and open the second valve, and then simultaneously open the second electromagnet 1915 and the third electromagnet 1924, so that the first movable frame 1912 contacts the outer wall surface of the copper crucible 15, and the second movable frame 1923 contacts the bottom surface of the copper crucible 15. When the first ultrasonic element 1914 and the second ultrasonic element 1921 move the copper crucible 15, the second movable frame 1923 moves the copper crucible 15. When the scale attached to the outer wall and bottom of the copper crucible 15 is dispersed, the staff can discharge the cooling water rich in scale to the outside through the external water suction pump (the flow path of the cooling water rich in scale is as follows: drainage channel 1911-drainage channel 1922-drainage pipe 193-drainage pipe 13). When the scale of a certain area on the outer wall of the copper crucible 15 is cleaned, the descaling mechanism 19 is driven to rotate by the motor 111 and the reversing component, and the scale of the next area on the outer wall of the copper crucible 15 is cleaned in the same way. Finally, the present invention can be used in the first cooling A camera, an ultrasonic thickness gauge and other instruments are arranged in the cavity 162 to monitor the change of the scale on the outer wall of the copper crucible 15. When the thickness of the scale on the outer wall of the copper crucible 15 affects the cooling of the titanium metal during operation, the staff can directly open the descaling mechanism 19 to clean the scale on the outer wall of the copper crucible 15, and then discharge the cooling water rich in scale to the outside through the external water suction pump. Since the third one-way valve is arranged at the upper end of the first movable frame 1912 of the present invention, when the external water suction pump discharges the cooling water rich in scale to the outside, the first movable frame 1912 is opened. The cooling water in the cooling chamber 162 will continue to flow from the third one-way valve into the sealed cavity formed by the first movable frame 1912 and the outer wall of the copper crucible 15 (at this time, the external cooling system needs to increase the cooling water delivered to the first cooling chamber 162 to ensure that the cooling water in the first cooling chamber 162 is always maintained in a normal state). Through the above technical solution, the present invention can clean the scale on the outer wall of the copper crucible 15 at any time without affecting the cooling of the copper crucible 15. At the same time, during the cleaning process, scale debris will not escape into the cooling water.

[0040] The working principle of the present invention is as follows: before operation, the air in the furnace body 1 is extracted by the fan 4 so that the working area in the furnace body 1 is in a vacuum state. During operation, cooling water is transported to the cooler 16 by the external cooling system, and the lifting and lowering of the electrode rod 5 is controlled by the lifting device 2. The molten metal droplets are rapidly solidified in the copper crucible 15 by the cooling water to form a titanium metal ingot. When the external cooling system fails for various reasons so that the cooling water cannot flow normally, the present invention can close the first valve on the water outlet pipe 161, and then open the sealing component, the liquid pump 18 and several groups of refrigeration elements 143. The first cooling chamber 162 is connected to the second cooling chamber 163 by the sealing component, and the cooling water in the first cooling chamber 162 flows along the second cooling chamber 163-liquid pump 18-second one-way valve-water inlet pipe 141-temperature controller 14-first cooling chamber 162-second cooling chamber 163 through the liquid pump 18. During the flow of the cooling water in the first cooling chamber 162, the cooling water is cooled by a plurality of groups of refrigeration elements 143 to ensure the normal operation of the work. After the work is completed, the staff of the present invention can connect the drain pipe 13 to the external water suction pump and open the second valve, and then synchronously open the second electromagnet 1915 and the third electromagnet 1924 to make the first movable frame 1912 contact the outer wall surface of the copper crucible 15, and the second movable frame 1923 contact the bottom surface of the copper crucible 15. When the first ultrasonic element 1914 and the second ultrasonic element 1921 vibrate and disperse the scale attached to the outer wall surface and the bottom surface of the copper crucible 15, the cooling water rich in scale can be discharged to the outside through the external water suction pump. When the scale in a certain area of ​​the outer wall surface of the copper crucible 15 is cleaned, the descaling mechanism 19 is driven to rotate by the motor 111 and the reversing assembly, and the scale in the next area of ​​the outer wall surface of the copper crucible 15 is cleaned in the same way.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. The embodiments should therefore be considered exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A vacuum consumable arc furnace for titanium alloy production, characterized in that: The vacuum consumable arc furnace comprises a furnace body (1), a lifting device (2), a support frame (3) and an electrode rod (5), wherein the lifting device (2) is arranged above the furnace body (1), the support frame (3) is arranged on the side of the furnace body (1), a fan (4) is arranged on the support frame (3), a mounting frame (11) is arranged at the upper end of the furnace body (1), a base (12) is arranged at the lower end of the furnace body (1), a copper crucible (15) and a cooler (16) are arranged between the mounting frame (11) and the base (12), the electrode rod (5) is arranged in the copper crucible (15), the lifting device (2) is connected to the electrode rod (5) through a clamp (21), a water outlet pipe (161) is arranged at the upper end of the cooler (16), a temperature controller (14) is arranged inside the base (12), and an external cooling system is connected to the cooler (16) through the temperature controller (14); The cooler (16) is provided with a first cooling cavity (162), a second cooling cavity (163) and a sealing component, and the connection state between the first cooling cavity (162) and the second cooling cavity (163) is controlled by the sealing component; A motor (111) is arranged above the mounting frame (11), a reversing assembly is arranged inside the mounting frame (11), a descaling mechanism (19) is arranged inside the first cooling chamber (162), and the descaling mechanism (19) is fixedly mounted below the reversing assembly. The descaling mechanism (19) is used to perform fixed-point descaling on the outer wall surface of the copper crucible (15), while preventing scale debris from scattering into the cooling water. The temperature controller (14) is provided with a guide groove (144) inside, the cross section of the guide groove (144) is a wave-shaped structure, a plurality of groups of refrigeration elements (143) are provided in the guide groove (144), the inlet end of the guide groove (144) is connected to the water inlet pipe (141), the outlet end of the guide groove (144) is connected to the cooler (16) through a connecting pipe (142), and a temperature measuring element is provided in the connecting pipe (142); The water outlet pipe (161) is connected to the first cooling chamber (162), and a first valve is provided on the water outlet pipe (161). A liquid pump (18) is also provided in the base (12), and a liquid inlet end of the liquid pump (18) is connected to the second cooling chamber (163). The water inlet pipe (141) is a three-way structure, and one end of the water inlet pipe (141) is connected to the inlet end of the guide groove (144), and the other end of the water inlet pipe (141) is connected to the external cooling system through a first one-way valve. The last end of the water inlet pipe (141) is connected to the liquid outlet end of the liquid pump (18) through a second one-way valve.

2. The vacuum consumable arc furnace for titanium alloy production according to claim 1, characterized in that: A through hole (1621) is provided at the upper end of the first cooling cavity (162); the sealing assembly comprises a first electromagnet (164) and a sealing frame (165); the first electromagnet (164) is provided at an end of the sealing cavity away from the through hole (1621); and the sealing frame (165) is provided at an end of the sealing cavity close to the through hole (1621).

3. The vacuum consumable arc furnace for titanium alloy production according to claim 1, characterized in that: The reversing assembly comprises a transmission gear (112) and a rotating disk (113); the upper end of the rotating disk (113) is provided with teeth; the transmission gear (112) is provided with a plurality of groups; the plurality of groups of transmission gears (112) are evenly arranged outside the rotating disk (113); one group of transmission gears (112) is connected to the motor (111).

4. The vacuum consumable arc furnace for titanium alloy production according to claim 1, characterized in that: The descaling mechanism (19) comprises a first descaling frame (191), wherein the first descaling frame (191) is provided with two groups, and the two groups of first descaling frames (191) are arranged at two ends below the reversing assembly in a relative manner, and an installation groove is arranged at one end of the first descaling frame (191) close to the copper crucible (15), and a first movable frame (1912) and a second electromagnet (1915) are arranged in the installation groove, and the first movable frame (1912) is movably installed in the interior of the installation groove by means of a first compression spring, and a first ultrasonic element (1914) is arranged on the first movable frame (1912).

5. A vacuum consumable arc furnace for titanium alloy production according to claim 4, characterized in that: The descaling mechanism (19) further comprises a second descaling frame (192), wherein the second descaling frame (192) is arranged below the two groups of first descaling frames (191), a second ultrasonic element (1921) is arranged at the upper end of the second descaling frame (192), a storage groove is arranged inside the second descaling frame (192), a second movable frame (1923) is arranged at the upper end of the storage groove, a third electromagnet (1924) is arranged at the lower end of the storage groove, and the second movable frame (1923) is movably installed in the storage groove via a second compression spring.

6. A vacuum consumable arc furnace for titanium alloy production according to claim 5, characterized in that: The first descaling frame (191) is further provided with a drainage channel (1911) and a fixed pipe (1913); the fixed pipe (1913) is fixedly mounted at one end of the drainage channel (1911) and passes through the first movable frame (1912); a third one-way valve is provided at the upper end of the first movable frame (1912); a drainage pipe (13) is provided at the lower end of the second descaling frame (192); a second valve is provided at one end of the drainage pipe (13) and extends out of the furnace body (1); a drainage channel (1922) is provided in the second descaling frame (192); the drainage channel (1922) is aligned with the drainage channel (1911); and the drainage channel (1922) is connected to the drainage pipe (13) through the drainage pipe (193).

7. A vacuum consumable arc furnace for titanium alloy production according to claim 6, characterized in that: The drainage channel (1922) is a three-way structure, and the left and right ends of the drainage channel (1922) are respectively connected to the drainage channels (1911) in the two groups of first descaling racks (191), and the middle position of the drainage channel (1922) passes through the second descaling rack (192).

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