Titanium alloy production arc furnace with vacuum consumable function

Abstract

The application discloses a titanium alloy production electric arc furnace with a vacuum self-consumption function and relates to the technical field of electric arc furnaces.The electric arc furnace comprises a first supporting frame, a second supporting frame, a top plate and a furnace body, the furnace body is located between the first supporting frame and the second supporting frame, the top plate is connected to the top of the first supporting frame and the second supporting frame, the top of the top plate is provided with a driving mechanism, the furnace body is composed of an air extraction cavity and a cooling cavity, the middle part of a cover is provided with an expansion opening, the side of the driving mechanism close to the cover is provided with an expansion assembly, the expansion assembly is composed of an extension pipe and a clamping sleeve, the clamping sleeve is composed of an upper ring, a lower ring and a plurality of connecting plates, the extension pipe is matched with the clamping sleeve, the accurate conveying of the electrode rod is realized, the inner wall of the copper crucible is cleaned by the clamping sleeve, the feeding speed of the electrode rod is controlled, the electrode rod is in the optimal electric arc smelting distance, the energy saving effect is realized, and the quality of titanium ingot smelting is improved.

Description

Technical Field

[0001] This invention relates to the field of electric arc furnace technology, specifically an electric arc furnace for titanium alloy production with vacuum self-consuming function. Background Technology

[0002] A vacuum arc furnace is an electric furnace that uses the energy of an electric arc to melt metals in a vacuum chamber. The furnace body is a sealed container that is evacuated or filled with inert gas. After the electrodes introduced from the top of the furnace and the water-cooled crystallizer at the bottom of the furnace are energized and an electric arc is generated, the heat of the electric arc melts the metal or alloy and solidifies it in the crystallizer.

[0003] In the existing vacuum arc furnace smelting process, the molten pool splashes and metal elements and their impurities volatilize in the crucible, causing impurities to adhere to the inner wall of the crucible, which in turn forms a layer of black dirt. If it is not cleaned in time, it will affect the vacuum degree when the vacuum arc furnace is working, thus affecting the smelting quality of titanium ingots. Summary of the Invention

[0004] The purpose of this invention is to provide an electric arc furnace for titanium alloy production with vacuum self-consuming function, so as to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An electric arc furnace for titanium alloy production with vacuum self-consumption function includes a first support frame, a second support frame, a top plate and a furnace body. The furnace body is located between the first support frame and the second support frame. The top plate is connected to the top of the first support frame and the top of the second support frame. The top of the top plate is provided with a driving mechanism for driving the telescopic movement of the electrode rod.

[0007] The drive mechanism moves the electrode rod closer to the furnace body, causing the electrode rod to extend into the furnace body. When the electrode rod approaches the bottom of the furnace body, an electric arc is generated between the bottom of the electrode rod and the metal inside the furnace body, so that the electrode rod undergoes electrode melting treatment.

[0008] Preferably, the furnace body consists of an extraction chamber and a cooling chamber. The cooling chamber is located inside the extraction chamber. A copper crucible is disposed inside the cooling chamber. The copper crucible is slidably connected to the cooling chamber. An extraction pump is disposed on the first support frame. The extraction pump is connected to the extraction chamber through a pipe. The extraction chamber is connected to the inside of the copper crucible.

[0009] Before the electric arc melting, the controller starts the vacuum pump, which extracts the air from the vacuum chamber and the copper crucible, creating a vacuum inside the copper crucible.

[0010] Preferably, a water supply pipe is provided at the top of the cooling chamber, and a drain outlet is provided at the bottom of the cooling chamber. A drain pipe is provided on the side of the drain outlet away from the cooling chamber. The water supply pipe and the drain pipe are respectively connected to a water pump. Through the pumping of the water pump, circulating water is formed in the cooling chamber.

[0011] Simultaneously, the controller starts the water pump, which delivers cooling water to the cooling chamber through the water pipe, filling the chamber with cooling water. The cooling water then envelops the copper crucible. Once the cooling chamber is full, the controller opens the drain outlet, allowing the water to flow from the chamber to the outlet and through the drain pipe, creating a circulating cooling flow that facilitates subsequent cooling of the copper crucible.

[0012] Preferably, the top of the furnace body is provided with a cover, the top of the cover is provided with a hydraulic rod, the cover is connected to the drive mechanism through the hydraulic rod, and the cover is sealed to the top of the furnace body;

[0013] The drive mechanism uses a hydraulic cylinder to push a hydraulic rod, which in turn pushes the cover to move closer to the furnace body, thus sealing the furnace body and facilitating subsequent vacuuming by the vacuum pump.

[0014] Preferably, the cap has a telescopic opening in the middle, and the drive mechanism has a telescopic component on the side near the cap. The telescopic component consists of an extension tube and a clamping sleeve. The extension tube consists of several short tubes. The surface of the short tubes is provided with a spiral groove, the top of the short tubes is provided with a slot, and the bottom of the short tubes is provided with a block. Two adjacent short tubes are connected by the slot and the block. The clamping sleeve is located below the extension tube and is slidably and sealingly connected to the telescopic opening.

[0015] The drive mechanism drives the extension tube to perform helical transmission through the spiral groove on the outer wall of the short tube. That is, the extension tube is a worm, and the drive mechanism is equipped with a worm wheel. Several short tubes are interlocked to form a hollow worm tube structure (i.e., extension tube), which allows the drive mechanism to drive the extension tube to move towards the side closer to the telescopic opening. During the movement of the extension tube, the clamping sleeve moves. When the upper surface of the lower ring is parallel to the upper surface of the telescopic opening, the drive mechanism stops, so that the lower ring, electrode rod and sealing cover cooperate to seal the furnace body.

[0016] When subsequent cleaning of the inner wall of the copper crucible is required, a short tube can be stacked on the side of the extension tube near the top plate to increase the length of the extension tube. This allows the clamping sleeve to move towards the bottom of the copper crucible, and the clamping sleeve rotates spirally during the movement, enabling the clamping sleeve to complete the cleaning operation of the inner wall of the copper crucible during the movement, thereby improving the cleaning effect of the inner wall of the copper crucible.

[0017] Preferably, the clamping sleeve consists of an upper ring, a lower ring, and a plurality of connecting plates, wherein the connecting plates are located between the upper ring and the lower ring;

[0018] Since the extension tube has a hollow tube structure, it can also be used as a delivery tube for the electrode rod. The electrode rod is delivered to the clamping sleeve through the extension tube, and then the electrode rod is delivered to the area between the lower ring and the upper ring. In this area, the electrode rod makes frictional contact with the drive wheel.

[0019] Preferably, both the upper and lower rings are provided with a plurality of transmission wheels inside, and the upper and lower rings are also provided with a drive motor and a hydraulic cylinder inside. The drive shaft of the drive motor is connected to the transmission wheels, and the transmission wheels are used to transport and clamp the electrode rods.

[0020] When the electrode rod needs to be conveyed to the bottom of the copper crucible, the controller controls the drive motor to start. The drive shaft of the drive motor drives the transmission wheel to rotate. The transmission wheel rubs against the outer wall of the electrode rod, causing the transmission wheel to move the electrode rod closer to the copper crucible. At the same time, another electrode rod is placed in the extension tube. The two electrode rods are interlocked with each other, thus forming a whole.

[0021] Preferably, the bottom of the upper ring and the top of the lower ring are provided with a plurality of rotating plates, the rotating plates are driven by hydraulic cylinders, the rotating plates are hinged to the connecting plate, and the connecting plate is provided with a telescopic plate in the middle.

[0022] At this time, the controller starts the hydraulic cylinders in the upper and lower rings. The hydraulic cylinders drive the rotating plate to rotate. The rotating plate rotates towards the side closer to the axis of the clamping sleeve. In the process of rotating the plate, the connecting plate moves, causing the connecting plate to move towards the side closer to the axis of the clamping sleeve. During the movement, the inner wall of the connecting plate contacts the outer wall of the electrode rod. Then, several connecting plates cooperate with the transmission wheel to complete the compression and fixation of the electrode rod, preventing the electrode rod from falling directly into the copper crucible due to gravity, which would damage the furnace body. At the same time, by adjusting the rotation speed of the drive motor, the distance between the electrode rod and the bottom of the copper crucible can be adjusted, so that the electrode rod is at the optimal distance for arc melting, thereby improving the quality of titanium ingot production.

[0023] Preferably, a plurality of brushes are provided on the outer wall of the connecting plate;

[0024] When the electrode rod melting is completed and the inner wall of the copper crucible needs to be cleaned, the controller controls the hydraulic cylinder to drive in reverse, causing the hydraulic cylinder to rotate the rotating plate away from the clamping sleeve. This causes the rotating plate to move the connecting plate away from the clamping sleeve. When the brush on the outer wall of the connecting plate contacts the telescopic port, the rotating plate stops rotating. Then, the drive mechanism drives the extension tube to move closer to the copper crucible, causing the extension tube to move several connecting plates towards the bottom of the copper crucible. The connecting plates, under the spiral drive of the extension tube, drive the brush to clean the inner wall of the copper crucible, removing impurities from the inner wall of the copper crucible. This prevents impurities from affecting the melting quality of the titanium ingot, thereby improving the melting quality of the titanium ingot.

[0025] After cleaning, the rotating plate drives the connecting plate to reset, so that the axes of the rotating plate and the connecting plate are parallel to the axis of the clamping sleeve.

[0026] Preferably, the copper crucible has several auxiliary tubes arranged around its axis, with each auxiliary tube connected to the top and bottom of the cooling chamber, and each auxiliary tube has a pressure plug at both ends.

[0027] Because the copper crucible is affected by the melting of the titanium ingot by the electric arc, the temperature of the copper crucible needs to be discharged through cooling water so that the titanium ingot can be cooled down. Under normal circumstances, the cooling water circulates in the cooling chamber so that the cooling water directly contacts the outer wall of the copper crucible, thereby cooling down the copper crucible.

[0028] However, if scale forms on the surface of the copper crucible, its presence may affect the thermal conductivity of the crucible, resulting in lower cooling efficiency. Consequently, during the heat conduction process, the heat from the titanium ingot will heat the air inside the auxiliary tube. Since both ends of the auxiliary tube are blocked by pressure plugs, the air inside the auxiliary tube is continuously heated under the heat transfer, causing the air pressure to expand. When the air pressure inside the auxiliary tube reaches the limit of the pressure plug, the air inside the auxiliary tube will push the pressure plug out, causing the pressure plug to detach from the auxiliary tube. This allows the auxiliary tube to connect with the cooling chamber, enabling the cooling water in the cooling chamber to be cooled through the auxiliary tube. This avoids scale affecting the heat conduction of the copper crucible and ensures the normal cooling rate of the titanium ingot.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. When subsequent cleaning of the inner wall of the copper crucible is required, a short tube can be stacked on the side of the extension tube near the top plate to increase the length of the extension tube. This allows the clamping sleeve to move towards the bottom of the copper crucible, and the clamping sleeve rotates spirally during the movement, thus completing the cleaning operation of the inner wall of the copper crucible and improving the cleaning effect.

[0031] 2. Since both ends of the auxiliary tube are blocked by pressure plugs, the air inside the auxiliary tube is continuously heated by heat transfer, causing the air pressure to expand. When the air pressure inside the auxiliary tube reaches the limit of the pressure plug, the air inside the auxiliary tube will push the pressure plug out, causing the pressure plug to separate from the auxiliary tube. Then the auxiliary tube is connected to the cooling chamber, allowing the cooling water in the cooling chamber to be cooled through the auxiliary tube, avoiding scale affecting the heat conduction of the copper crucible, and thus ensuring the normal cooling rate of the titanium ingot. Attached Figure Description

[0032] Figure 1 This is a perspective view of the present invention;

[0033] Figure 2 This is a front view of the present invention;

[0034] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0035] Figure 4 This is a cross-sectional front view of the present invention;

[0036] Figure 5 This is a schematic diagram of the furnace body.

[0037] Figure 6 This is a schematic diagram of the clamping sleeve structure;

[0038] Figure 7 This is a front view of the clamping sleeve;

[0039] Figure 8 for Figure 3 Enlarged view of point A in the middle;

[0040] Figure 9 This is a schematic diagram of the short tube structure;

[0041] Figure 10 This is a cross-sectional view of the copper crucible;

[0042] In the diagram: 1. First support frame; 11. Second support frame; 12. Top plate; 13. Drive mechanism;

[0043] 2. Furnace body; 21. Evacuation chamber; 22. Cooling chamber; 221. Drain outlet; 23. Copper crucible; 231. Auxiliary pipe; 232. Pressure plug; 24. Cover; 25. Telescopic port;

[0044] 3. Telescopic assembly; 31. Extension tube; 32. Clamping sleeve; 33. Short tube; 34. Upper ring; 35. Lower ring; 36. Connecting plate; 361. Brush; 37. Drive wheel; 38. Rotating plate. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example: Figures 1-10 As shown, the present invention provides a technical solution for an electric arc furnace for titanium alloy production with vacuum self-consuming function, including a first support frame 1, a second support frame 11, a top plate 12 and a furnace body 2. The furnace body 2 is located between the first support frame 1 and the second support frame 11. The top plate 12 is connected to the top of the first support frame 1 and the second support frame 11. A driving mechanism 13 is provided on the top of the top plate 12. The driving mechanism 13 is used to drive the telescopic movement of the electrode rod.

[0047] In one specific embodiment of the present invention, the furnace body 2 is composed of an extraction chamber 21 and a cooling chamber 22. The cooling chamber 22 is located inside the extraction chamber 21. A copper crucible 23 is disposed inside the cooling chamber 22. The copper crucible 23 is slidably connected to the cooling chamber 22. An extraction pump is disposed on the first support frame 1. The extraction pump is connected to the extraction chamber 21 through a pipe. The extraction chamber 21 is connected to the inside of the copper crucible 23.

[0048] In one specific embodiment of the present invention, a water supply pipe is provided at the top of the cooling chamber 22, and a drain outlet 221 is provided at the bottom of the cooling chamber 22. A drain pipe is provided on the side of the drain outlet 221 away from the cooling chamber 22. The water supply pipe and the drain pipe are respectively connected to a water pump. Through the pumping of the water pump, circulating water is formed in the cooling chamber 22.

[0049] In one specific embodiment of the present invention, the copper crucible 23 is provided with a plurality of auxiliary tubes 231 inside, the plurality of auxiliary tubes 231 being arranged around the axis of the copper crucible 23, the two ends of the auxiliary tubes 231 being connected to the top and bottom of the cooling chamber 22 respectively, and the two ends of the auxiliary tubes 231 being provided with pressure plugs 232 respectively.

[0050] In one specific embodiment of the present invention, a cover 24 is provided on the top of the furnace body 2, and a hydraulic rod is provided on the top of the cover 24. The cover 24 is connected to the drive mechanism 13 through the hydraulic rod, and the cover 24 is sealed to the top of the furnace body 2.

[0051] In one specific embodiment of the present invention, a telescopic opening 25 is provided in the middle of the cover 24, and a telescopic component 3 is provided on the side of the drive mechanism 13 near the cover 24. The telescopic component 3 is composed of an extension tube 31 and a clamping sleeve 32. The extension tube 31 is composed of a plurality of short tubes 33. The surface of the short tubes 33 is provided with a spiral groove, the top of the short tubes 33 is provided with a slot, and the bottom of the short tubes 33 is provided with a block. Two adjacent short tubes 33 are connected by the slot and the block. The clamping sleeve 32 is located below the extension tube 31 and is slidably and sealingly connected to the telescopic opening 25.

[0052] In one specific embodiment of the present invention, the clamping sleeve 32 is composed of an upper ring 34, a lower ring 35 and a plurality of connecting plates 36, wherein the connecting plates 36 are located between the upper ring 34 and the lower ring 35.

[0053] In one specific embodiment of the present invention, a plurality of brushes 361 are provided on the outer wall of the connecting plate 36.

[0054] In one specific embodiment of the present invention, the upper ring 34 and the lower ring 35 are each provided with a plurality of transmission wheels 37. The upper ring 34 and the lower ring 35 are also provided with a drive motor and a hydraulic cylinder. The drive shaft of the drive motor is connected to the transmission wheels 37. The transmission wheels 37 are used to transport and clamp the electrode rod.

[0055] In one specific embodiment of the present invention, a plurality of rotating plates 38 are provided at the bottom of the upper ring 34 and the top of the lower ring 35. The rotating plates 38 are driven by hydraulic cylinders and are hinged to the connecting plate 36. A telescopic plate is provided in the middle of the connecting plate 36.

[0056] Working principle of the invention:

[0057] The drive mechanism 13 uses a hydraulic cylinder to push a hydraulic rod, which in turn pushes the cover 24 to move. The cover 24 then moves closer to the furnace body 2, so that the cover 24 seals the furnace body 2, which facilitates the subsequent vacuum pump to perform vacuum treatment inside the furnace body 2.

[0058] Before the electric arc melting is carried out, the controller controls the start of the air pump, which extracts the air from the air extraction chamber 21 and the copper crucible 23, so that a vacuum is formed in the copper crucible 23.

[0059] Simultaneously, the controller starts the water pump, which delivers cooling water to the cooling chamber 22 through the water pipe, filling the cooling chamber 22 with cooling water. The cooling water then envelops the copper crucible 23. Once the cooling chamber 22 is full, the controller opens the drain outlet 221, allowing the water in the cooling chamber 22 to flow into the drain outlet 221 and be delivered to the drain pipe. This creates a circulating cooling flow, facilitating subsequent cooling of the copper crucible 23.

[0060] The drive mechanism 13 drives the extension tube 31 to perform helical transmission through the spiral groove on the outer wall of the short tube 33. That is, the extension tube 31 is a worm, and the drive mechanism 13 is equipped with a worm wheel. Then, several short tubes 33 are interlocked to form a hollow worm tube structure (i.e., extension tube 31), so that the drive mechanism 13 can drive the extension tube 31 to move towards the side closer to the telescopic port 25. During the movement of the extension tube 31, the clamping sleeve 32 moves. When the upper surface of the lower ring 35 is parallel to the upper surface of the telescopic port 25, the drive mechanism 13 stops, so that the lower ring 35, the electrode rod and the cover 24 cooperate with each other to seal the furnace body 2.

[0061] Since the extension tube 31 has a hollow tube structure, it can be used as a delivery tube for the electrode rod. The electrode rod is delivered to the clamping sleeve 32 through the extension tube 31, and then the electrode rod is delivered to the area between the lower ring 35 and the upper ring 34. In this area, the electrode rod makes frictional contact with the transmission wheel 37.

[0062] When the electrode rod needs to be conveyed to the bottom of the copper crucible 23, the controller controls the drive motor to start. The drive shaft of the drive motor drives the transmission wheel 37 to rotate. The transmission wheel 37 rubs against the outer wall of the electrode rod, causing the transmission wheel 37 to move the electrode rod closer to the copper crucible 23. At the same time, another electrode rod is placed in the extension tube 31. The two electrode rods are interlocked with each other, thus forming a whole.

[0063] At this time, the controller starts the hydraulic cylinders in the upper ring 34 and lower ring 35. The hydraulic cylinders drive the rotating plate 38 to rotate. The rotating plate 38 rotates to the side closer to the axis of the clamping sleeve 32. In the process of rotating the rotating plate 38, the connecting plate 36 moves, so that the connecting plate 36 moves to the side closer to the axis of the clamping sleeve 32. During the movement, the inner wall of the connecting plate 36 contacts the outer wall of the electrode rod. Then, several connecting plates 36 cooperate with the transmission wheel 37 to complete the compression and fixation of the electrode rod, so as to prevent the electrode rod from falling directly into the copper crucible 23 due to gravity, which would damage the furnace body 2. At the same time, by adjusting the rotation speed of the drive motor, the distance between the electrode rod and the bottom of the copper crucible 23 can be adjusted, so that the electrode rod is at the optimal distance for arc melting.

[0064] Because the copper crucible 23 is affected by the titanium ingot melted by the electric arc, the temperature of the copper crucible 23 needs to be discharged outward through cooling water so that the titanium ingot can achieve a cooling effect. Under normal circumstances, the cooling water circulates in the cooling chamber 22 so that the cooling water directly contacts the outer wall of the copper crucible 23, thereby cooling the copper crucible 23.

[0065] However, if scale forms on the surface of the copper crucible 23, the presence of scale may affect the thermal conductivity of the copper crucible 23, resulting in a lower cooling efficiency. Consequently, the heat from the titanium ingot will heat the air inside the auxiliary tube 231 during the heat conduction process. Since both ends of the auxiliary tube 231 are blocked by the pressure plug 232, the air inside the auxiliary tube 231 will be continuously heated under the heat transfer, causing the air pressure to expand. When the air pressure inside the auxiliary tube 231 reaches the limit of the pressure plug 232, the air inside the auxiliary tube 231 will push the pressure plug 232 out, causing the pressure plug 232 to separate from the auxiliary tube 231. Then, the auxiliary tube 231 will be connected to the cooling chamber 22, allowing the cooling water in the cooling chamber 22 to be cooled through the auxiliary tube 231, thus avoiding the scale affecting the heat conduction of the copper crucible 23.

[0066] When the electrode rod melting is completed and the inner wall of the copper crucible 23 needs to be cleaned, the controller controls the hydraulic cylinder to drive in reverse, causing the hydraulic cylinder to rotate the rotating plate 38 away from the axis of the clamping sleeve 32. This causes the rotating plate 38 to move the connecting plate 36 away from the clamping sleeve 32. When the brush 361 on the outer wall of the connecting plate 36 contacts the telescopic port 25, the rotating plate 38 stops rotating. Then, the drive mechanism 13 drives the extension tube 31 to move closer to the copper crucible 23, causing the extension tube 31 to drive several connecting... The connecting plate 36 moves towards the bottom of the copper crucible 23. By superimposing a short tube 33 on the side of the extension tube 31 near the top plate 12, the length of the extension tube 31 is increased, which allows the clamping sleeve 32 to move towards the bottom of the copper crucible 23. During the movement, the clamping sleeve 32 rotates spirally, and the connecting plate 36 drives the brush 361 to clean the inner wall of the copper crucible 23 under the spiral drive of the extension tube 31, thus cleaning the impurities on the inner wall of the copper crucible 23 and preventing impurities from affecting the melting quality of the titanium ingot.

[0067] After cleaning, the rotating plate 38 drives the connecting plate 36 to reset, so that the axes of the rotating plate 38 and the connecting plate are parallel to the axis of the clamping sleeve 32.

[0068] It will be apparent to those skilled in the art that the present 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 its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An electric arc furnace for titanium alloy production with vacuum self-consuming function, characterized in that: It includes a first support frame (1), a second support frame (11), a top plate (12) and a furnace body (2). The furnace body (2) is located between the first support frame (1) and the second support frame (11). The top plate (12) is connected to the top of the first support frame (1) and the second support frame (11). A driving mechanism (13) is provided on the top of the top plate (12). The driving mechanism (13) is used to drive the telescopic movement of the electrode rod. The top of the furnace body (2) is provided with a cover (24), and the middle of the cover (24) is provided with a telescopic opening (25). The drive mechanism (13) is provided with a telescopic component (3) on the side near the cover (24). The telescopic component (3) is composed of an extension tube (31) and a clamping sleeve (32). The extension tube (31) is composed of several short tubes (33). The surface of the short tube (33) is provided with a spiral groove. The top of the short tube (33) is provided with a slot. The bottom of the short tube (33) is provided with a block. Two adjacent short tubes (33) are connected by the slot and the block. The clamping sleeve (32) is located below the extension tube (31). The clamping sleeve (32) is slidably and sealedly connected to the telescopic opening (25). The clamping sleeve (32) consists of an upper ring (34), a lower ring (35) and several connecting plates (36), wherein the connecting plates (36) are located between the upper ring (34) and the lower ring (35); The bottom of the upper ring (34) and the top of the lower ring (35) are provided with a plurality of rotating plates (38). The rotating plates (38) are driven by hydraulic cylinders. The rotating plates (38) are hinged to the connecting plate (36). The middle part of the connecting plate (36) is provided with a telescopic plate. A number of brushes (361) are provided on the outer wall of the connecting plate (36).

2. The electric arc furnace for titanium alloy production with vacuum self-consuming function according to claim 1, characterized in that: The furnace body (2) consists of an extraction chamber (21) and a cooling chamber (22). The cooling chamber (22) is located inside the extraction chamber (21). A copper crucible (23) is installed inside the cooling chamber (22). The copper crucible (23) is slidably connected to the cooling chamber (22). An extraction pump is installed on the first support frame (1). The extraction pump is connected to the extraction chamber (21) through a pipe. The extraction chamber (21) is connected to the inside of the copper crucible (23).

3. The electric arc furnace for titanium alloy production with vacuum self-consuming function according to claim 2, characterized in that: A water supply pipe is provided at the top of the cooling chamber (22), and a drain outlet (221) is provided at the bottom of the cooling chamber (22). A drain pipe is provided on the side of the drain outlet (221) away from the cooling chamber (22). The water supply pipe and the drain pipe are respectively connected to a water pump. Through the pumping of the water pump, circulating water is formed in the cooling chamber (22).

4. The electric arc furnace for titanium alloy production with vacuum self-consuming function according to claim 1, characterized in that: A hydraulic rod is provided on the top of the cover (24), and the cover (24) is connected to the drive mechanism (13) through the hydraulic rod. The cover (24) is sealed to the top of the furnace body (2).

5. An electric arc furnace for titanium alloy production with vacuum self-consuming function according to claim 1, characterized in that: The upper ring (34) and the lower ring (35) are each provided with a number of transmission wheels (37). The upper ring (34) and the lower ring (35) are also provided with a drive motor and a hydraulic cylinder. The drive shaft of the drive motor is connected to the transmission wheel (37). The transmission wheel (37) is used to transport and clamp the electrode rod.

6. An electric arc furnace for titanium alloy production with vacuum self-consuming function according to claim 2, characterized in that: The copper crucible (23) is provided with a number of auxiliary tubes (231) inside. The auxiliary tubes (231) are arranged around the axis of the copper crucible (23). The two ends of the auxiliary tubes (231) are respectively connected to the top and bottom of the cooling chamber (22). The two ends of the auxiliary tubes (231) are respectively provided with air pressure plugs (232).

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