Transition flow channel device of vacuum induction furnace and control method thereof

Abstract

The present invention relates to a transition flow channel device of a vacuum induction furnace, wherein a smelting chamber is arranged on one side of the transition flow channel device of the vacuum induction furnace; one side of an isolation valve is fixed on a preset axis on one side of the smelting chamber; a flow channel chamber, one side of the flow channel chamber is fixed on a preset axis on the other side of the isolation valve; the isolation valve is vertically arranged between the smelting chamber and the flow channel chamber; a flow channel driving mechanism is fixed on the preset axis on the other side of the flow channel chamber; when the vacuum degrees of the smelting chamber and the flow channel chamber are the same, the isolation valve is opened, and the flow channel driving mechanism drives the flow channel for casting. The present invention can minimize the smelting heat loss and reduce the contact time between the molten steel and the refractory material in the flow channel, and also maintain a sufficient vacuum degree in the smelting chamber. The transition flow channel device of the vacuum induction furnace and the control method of the present invention can also minimize the labor intensity of workers and the equipment adjustment time, and improve the production efficiency and automation level.

Description

Technical Field

[0001] The embodiments of the present invention relate to a transition flow channel device and a control method thereof, and in particular to a transition flow channel device of a vacuum induction furnace and a control method thereof. Background Art

[0002] With the rapid development of science and technology in my country, many industries such as aerospace, automobile manufacturing, petrochemical, power station construction, nuclear facilities, machinery manufacturing, as well as the development of military industry, product upgrading, train speed-up and many other links have put forward higher and higher requirements on the quality of steel. The vacuum induction melting furnace has many advantages such as low gas content, better uniform composition, less metal impurities, fine metal structure and high purity, which are replacing the existing medium frequency furnace in large quantities. With the large-scale and high-end equipment, the scale of vacuum induction furnace has increased from the early kilogram level to several tons and tens of tons. The vacuum induction melting furnace uses electromagnetic induction to generate eddy currents in the metal conductor to heat the charge for melting under vacuum conditions, making the metal melted vacuum smelting equipment. Specifically, through a certain frequency of AC power supply, usually divided into medium frequency and industrial frequency, an alternating magnetic field is generated when the alternating current passes through the coil on the crucible. According to the Ferrari electromagnetic induction principle, this magnetic field will generate eddy currents with a certain depth on the surface of the material to be melted, and then melt the metal material in the crucible through the heating of this eddy current. When the smelting material is steel or metal, the molten steel in the alternating magnetic field will be affected by the electromagnetic force and produce relative movement, and then produce a stirring effect according to the distribution of the magnetic field, so that the molten steel can be fully smelted, and the smelted material can be more uniform and high-quality.

[0003] In the smelting process of large-tonnage vacuum induction furnace, large induction furnaces usually adopt a multi-chamber structure, including a melting chamber, a launder chamber, an ingot casting chamber, etc., in which different molds are placed in the ingot casting chamber to solidify the metal liquid according to the different melting requirements. The specific process is to wait for the material in the melting chamber to be fully melted to form a uniform molten metal, and then connect the melting chamber, launder chamber, and ingot casting chamber. After the vacuum is balanced, the crucible in the melting chamber is tilted to allow the molten metal to flow through the casting port into the launder along the mold in the ingot casting chamber.

[0004] As the capacity of vacuum induction furnaces becomes larger and larger, the volume of molten steel becomes larger and larger. In order to further reduce heat loss and reduce operating power consumption, the casting process of large-tonnage vacuum induction furnaces is very important. How to design a launder device to reduce smelting heat loss and reduce the contact time between molten steel and refractory materials in the launder, and to maintain sufficient vacuum in the smelting chamber, to ensure that the labor intensity of workers and equipment adjustment time are reduced as much as possible under smelting requirements, and to improve production efficiency and automation level have become important technical issues that technical personnel in this field need to solve urgently. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a transition flow channel device and a control method for a vacuum induction furnace that can minimize smelting heat loss and reduce the contact time between molten steel and refractory materials in the flow channel, while maintaining a sufficient vacuum degree in the smelting chamber, while minimizing the labor intensity of workers and equipment adjustment time, and improving production efficiency and automation level.

[0006] In order to achieve the above-mentioned object, the embodiment of the present invention designs a transition flow channel device of a vacuum induction furnace, which is characterized by comprising:

[0007] A smelting chamber is provided on one side of the transition flow channel device of the vacuum induction furnace;

[0008] An isolation valve, one side of the isolation valve being fixed on a preset axis on one side of the smelting chamber;

[0009] A flow cell chamber, fixing one side of the flow cell chamber on a preset axis on the other side of the isolation valve;

[0010] The isolation valve is vertically arranged between the smelting chamber and the launder chamber;

[0011] A flow channel driving mechanism, the flow channel driving mechanism is fixed on a preset axis on the other side of the flow channel chamber;

[0012] When the vacuum degrees of the smelting chamber and the launder chamber are the same, the isolation valve is opened, and the launder driving mechanism drives the launder to perform casting.

[0013] Furthermore, a smelting crucible is arranged in the smelting chamber, and a flow channel is arranged between the smelting crucible and the isolation valve; the flow channel and the smelting crucible are both arranged on a preset axis of the flow channel chamber; a flow channel support frame is fixed on one side of the smelting crucible and on the same preset axis as the flow channel chamber, and an observation window is arranged above the smelting chamber.

[0014] Furthermore, the isolation valve further comprises:

[0015] An isolation valve plate, one side of which is welded and fixed to the smelting chamber along the preset axis, and the other side of which is welded and fixed to one side of the flow channel chamber along the preset axis; the middle of the isolation valve plate is set to form a cavity structure;

[0016] A slideway is fixed on the isolation valve plate in the cavity structure; a pulley is fixed above the slideway;

[0017] An isolation valve plate is provided in the cavity structure of the isolation valve plate; the upper part of the isolation valve plate is fixed on the pulley; a sealing ring is provided on one side of the isolation valve plate in the direction in which the isolation valve plate is fixedly connected to the smelting chamber;

[0018] An isolation valve oil cylinder, wherein the isolation valve oil cylinder is fixed above the outer side of the isolation valve plate; the piston rod of the isolation valve oil cylinder is fixed on the pulley connecting rod, and the piston rod of the isolation valve oil cylinder is movably connected to the pulley connecting rod;

[0019] A valve plate clamping device, wherein a plurality of the valve plate clamping devices are arranged on the outer side of the isolation valve plate, and the plurality of the valve plate clamping devices are arranged along a circle of the isolation valve plate; one end of the valve plate clamping device is fixed to the isolation valve plate, and the other end of the valve plate clamping device clamps one side of the sealing ring arranged on one side of the isolation valve plate.

[0020] Furthermore, the flow cell chamber further comprises:

[0021] A flow channel chamber frame is provided around the outer side of the flow channel chamber;

[0022] A flow channel chamber cover plate is disposed above the flow channel chamber and on the flow channel chamber frame;

[0023] A tank car guide rail is fixed on the bottom of the flow channel chamber inside the flow channel chamber frame;

[0024] A flow trough, wherein rollers are arranged below the flow trough, and the flow trough is mounted on the guide rail of the tank car; the flow trough is driven by the flow trough driving mechanism, and the flow trough slides on the guide rail of the tank car; a casting port is arranged at the lower end of the flow trough;

[0025] A rocker arm support, the rocker arm support is welded on one side of the flow channel chamber, the upper end of the rocker arm support is connected to the rocker arm through a pin shaft, the rocker arm support is connected to the ear seat through a bolt, the ear seat and the rocker arm are movably connected to the piston rod on the cover plate hydraulic mechanism through a pin shaft, and the rocker arm is movably connected to the flow channel chamber cover plate through a pin shaft.

[0026] Furthermore, the flow channel driving mechanism is arranged on one side of the flow channel chamber, and the flow channel driving mechanism further comprises:

[0027] A pushing hydraulic cylinder, wherein the cylinder body of the pushing hydraulic cylinder is fixed to one side of the flow channel chamber through a sealing flange seat, and the cylinder body of the pushing hydraulic cylinder and the sealing flange seat are fixed to the frame of the flow channel chamber; a piston push rod is arranged inside the pushing hydraulic cylinder, and the piston push rod passes through the sealing flange seat and is movably connected to the flow channel; a fixing rod is arranged inside the piston push rod, and one end of the fixing rod is fixed to the inner side of one end of the cylinder body of the pushing hydraulic cylinder;

[0028] A lifting hydraulic cylinder, one end of which is fixed on the bracket, and the other end is connected to the pushing hydraulic cylinder through a lifting pin shaft.

[0029] Furthermore, on one side of the flow groove, a recessed buckle is fixed on the side wall of the flow groove on one side of the pushing hydraulic cylinder, and a detachable buckle is fixed on the side of the piston push rod close to the flow groove, so that during the upward movement of the lifting hydraulic cylinder or the downward movement of the lifting hydraulic cylinder, the detachable buckle and the recessed buckle are connected or separated.

[0030] Furthermore, the number of the valve plate clamping devices is 4 groups, which are arranged on both sides of the isolation valve plate. After the isolation valve plate is closed, the valve plate clamping device 24 drives to clamp the isolation valve plate and the sealing ring.

[0031] Furthermore, the pouring port faces the smelting crucible during the descending process of the launder.

[0032] The present invention also discloses a control method for a transition flow channel device of a vacuum induction furnace, which is characterized in that it also includes: during the casting preparation work of the vacuum induction furnace, the hydraulic cover plate mechanism automatically opens the flow channel chamber cover plate, places the flow channel on the tank car track, the concave buckle on the right side of the flow channel is snapped into the detachable buckle, and the flow channel chamber cover plate is automatically closed, that is, the isolation valve plate enters the closed state, and then, the flow channel chamber is evacuated to the same vacuum degree as the smelting chamber, the valve plate clamping device is released, the isolation valve plate is movably connected to the isolation valve cylinder, the sealing ring on the isolation valve plate leaves the isolation valve plate, and the isolation valve is driven The oil cylinder drives the isolation valve plate to move and open the door plate, and the flow channel driving mechanism drives the piston push rod to drive the flow channel to move on the tank car track to the flow channel support frame. After the lifting hydraulic cylinder pushes the flow channel driving mechanism to lift up a certain angle, the detachable buckle moves downward and disengages from the concave buckle, and the piston push rod is recovered into the flow channel chamber, the isolation valve plate is closed, and the valve plate clamping device is driven to ensure the sealing of the melting chamber. Wait for the temperature of the melting crucible and the composition of the molten steel to meet the technical requirements, tilt the melting crucible, and the molten steel flows to the flow channel through the casting port of the flow channel to complete the casting. After the casting is completed, repeat the next flow channel replacement operation.

[0033] Furthermore, the vacuum degree of the launder chamber during the transition process is the same as the vacuum degree of the smelting chamber.

[0034] Compared with the prior art, the embodiment of the present invention uses a cover plate hydraulic mechanism provided on the side of the flow cell chamber. Compared with the current manual control of the opening and closing of such a heavy flow cell chamber cover plate, the cover plate hydraulic mechanism can automatically drive the flow cell chamber cover plate to open and close, and can quickly and efficiently open and close the flow cell chamber, greatly reducing the labor intensity of workers and improving work efficiency.

[0035] In order to protect the sealing ring of the isolation valve plate and maintain the vacuum degree in the smelting chamber, the isolation valve plate is movably connected to the isolation valve cylinder, and a valve plate clamping device is provided on the isolation valve plate. After the isolation valve plate is closed, the isolation valve plate is pressed tighter by starting the valve plate clamping device and the V-shaped sealing ring provided around the isolation valve plate is used to ensure that the isolation valve plate is closed more tightly, thereby ensuring the vacuum sealing effect of the smelting chamber;

[0036] A launder driving mechanism is provided on one side of the launder chamber. The launder is automatically advanced and withdrawn in the launder chamber, isolation valve and smelting chamber to realize automatic movement of the launder, which is easy to control. When the piston push rod and the launder are connected and disconnected for a long time, the connection parts are easily damaged due to frequent movements. A detachable buckle is provided on the piston push rod near the launder side to protect the piston push rod, reduce equipment maintenance and reduce production costs.

[0037] The novel transition flow channel device of the vacuum induction furnace of the present invention has the advantages of compact structure, convenient use, simple operation and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 : It is the front view of the structure of the present invention;

[0039] Figure 2 :for Figure 1 AA section view when the isolation valve is open;

[0040] Figure 3 :for Figure 2 Enlarged view of the middle I position;

[0041] Figure 4 :for Figure 1 DD cross-sectional view when the isolation valve is closed;

[0042] Figure 5 :for Figure 4 Enlarged view of the XV position in the middle;

[0043] Figure 6 : is a top view of the structure of the present invention;

[0044] Figure 7 :for Figure 6 BB cross-sectional view;

[0045] Figure 8 :for Figure 6 CC section view in;

[0046] Fig. 9 : It is a right side view of the structure of the present invention;

[0047] Fig.10 :for Fig. 9 Enlarged view of the center X position.

[0048] In the figure: 1-smelting chamber, 11-smelting crucible, 12-flow channel support frame, 13-observation window, 14-flow channel, 2-isolation valve, 21-isolation valve plate, 22-isolation valve plate, 221-sealing ring, 23-isolation valve cylinder, 231-piston rod, 24-valve plate clamping device, 25-slide, 26-pulley, 27-pulley connecting rod, 3-flow channel chamber, 30-flow channel chamber frame, 31-flow channel chamber cover plate, 32-tank car track, 33-flow channel, 331-recessed buckle, 332-casting mouth, 34-cover plate hydraulic mechanism, 35-rocker support, 351-pin shaft, 352-rocker, 353-ear seat, 36-roller, 4-flow channel driving mechanism, 41-push hydraulic cylinder, 411-sealing flange seat, 412-piston push rod, 413- Fixed rod, 42-lifting hydraulic cylinder, 421-lifting pin, 422-detachable buckle, 43-bracket. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0050] The first embodiment of the present invention relates to a transition flow channel device of a vacuum induction furnace, such as Figure 1 , Figure 6 , Fig. 9 As shown, including:

[0051] A smelting chamber 1 is arranged on one side of the transition launder device of the vacuum induction furnace; the smelting chamber 1 is mainly used for smelting special steel.

[0052] One side of the isolation valve 2 is fixed on a preset axis on one side of the smelting chamber 1; the isolation valve 2 and the smelting chamber 1 are arranged on the same axis.

[0053] One side of the flow cell chamber 3 is fixed on the preset axis on the other side of the isolation valve 2; the flow cell chamber 3 and the isolation valve 2 are also arranged on the same axis.

[0054] The isolation valve 2 is vertically arranged between the smelting chamber 1 and the launder chamber 3; the vertical arrangement can be beneficial to isolating the smelting chamber 1 from the launder chamber 3, ensuring that the vacuum degree between the smelting chamber 1 and the launder chamber 3 is not affected.

[0055] The launder driving mechanism 4 is fixed on the preset axis on the other side of the launder chamber 3; the launder driving mechanism 4, the launder chamber 3, the isolation valve 2 and the smelting chamber 1 are arranged on the same axis, so that the launder chamber 3 can be ensured to run linearly.

[0056] In this embodiment, when the vacuum degrees of the smelting chamber 1 and the launder chamber 3 are the same, the isolation valve 2 is opened, and the launder driving mechanism 4 drives the launder 33 to perform casting.

[0057] The above structure can minimize the smelting heat loss and reduce the contact time between the molten steel and the refractory material in the launder, and also maintain a sufficient vacuum degree in the smelting chamber. The transition launder device and control method of the vacuum induction furnace can also reduce the labor intensity of workers and the equipment adjustment time as much as possible, and improve the production efficiency and automation level of the transition launder device of the vacuum induction furnace. The technical requirements of energy saving and labor intensity reduction in this embodiment are met.

[0058] In order to further achieve the above technical effects, combined Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, a smelting crucible 11 is arranged in the smelting chamber 1, and a flow channel 14 is arranged between the smelting crucible 11 and the isolation valve 2; the flow channel 14 and the smelting crucible 11 are both arranged on the preset axis of the flow channel chamber 3; a flow channel support frame 12 is fixed on one side of the smelting crucible 11 and the same preset axis as the flow channel chamber 3, and an observation window 13 is arranged above the smelting chamber.

[0059] In order to achieve isolation between the smelting chamber 1 and the launder chamber 3, as Figure 2 , Figure 4 as well as Figure 5 , Figure 8 As shown, the isolation valve 2 also includes:

[0060] One side of the isolation valve plate 21 is welded and fixed to the smelting chamber 1 along a preset axis, and the other side of the isolation valve plate 21 is welded and fixed to one side of the flow channel chamber 1 along the preset axis; the middle of the isolation valve plate 21 is set as a cavity structure; the isolation valve plate 21 plays a fixing role.

[0061] A slideway 25 is fixed on the isolation valve plate 21 in the cavity structure; a pulley 26 is fixed above the slideway 25;

[0062] An isolation valve plate 22 is arranged in the cavity structure of the isolation valve plate 21; the upper part of the isolation valve plate 22 is fixed on the pulley 26; a sealing ring 221 is arranged on one side of the isolation valve plate 22 in the direction of fixed connection between the isolation valve plate 22 and the smelting chamber 1; the isolation valve plate 22 isolates the smelting chamber 1 from the flow channel chamber 3 under the drive of the isolation valve cylinder 23.

[0063] The isolation valve cylinder 23 is fixed above the outer side of the isolation valve plate 22 ; the piston rod of the isolation valve cylinder 23 is fixed on the pulley connecting rod 27 , and the piston rod of the isolation valve cylinder 23 is movably connected to the pulley connecting rod 27 ; the isolation valve cylinder 23 is used to drive the isolation valve plate 22 .

[0064] A plurality of valve plate clamping devices 24 are arranged on the outside of the isolation valve plate 21. In this embodiment, there are four valve plate clamping devices 24, which are arranged along a circumference of the isolation valve plate 21. One end of the valve plate clamping device 24 is fixed to the isolation valve plate 21, and the other end of the valve plate clamping device 24 is pressed against one side of a sealing ring 221 arranged on one side of the isolation valve plate 22. The valve plate clamping device 24 is used to press the sealing ring 221, thereby playing a sealing role for the isolation valve 2.

[0065] In order to further achieve the above technical effects, Figure 2 -Attached Fig.10 As shown, the flow cell chamber 3 also includes:

[0066] A flow cell chamber frame 30 is arranged around the outer side of the flow cell chamber 3 ; the flow cell chamber frame 30 is used to support the flow cell chamber 3 and serves as a frame and framework structure of the flow cell chamber 3 .

[0067] A flow cell chamber cover plate 31 is arranged on the flow cell chamber frame 30 above the flow cell chamber 3 ; the flow cell chamber cover plate 31 serves as a cover of the flow cell chamber 3 .

[0068] Inside the flow channel chamber frame 30, a tank car guide rail 32 is fixed on the bottom of the flow channel chamber 1; the tank car guide rail 32 is used for running the flow channel 33;

[0069] The flow trough 33 has a roller 36 disposed below the flow trough 33, and the flow trough 33 is mounted on the tank car guide rail 32; the flow trough 33 is driven by the flow trough driving mechanism 4, and the flow trough 33 slides on the tank car guide rail 32; a casting port 332 is disposed at the lower end of the flow trough 33;

[0070] As attached Fig.10As shown, the rocker arm support 35 is welded on one side of the flow channel chamber 3, the upper end of the rocker arm support 35 is connected to the rocker arm 352 through a pin shaft 351, the rocker arm support 35 is connected to the ear seat 353 through a bolt, the ear seat 353 and the rocker arm 352 are movably connected to the piston rod on the cover plate hydraulic mechanism 34 through the pin shaft 351, and the rocker arm 352 is movably connected to the flow channel chamber cover plate 31 through the pin shaft 351. The cover plate hydraulic mechanism 34 uses the rocker arm support 35 to drive the flow channel chamber cover plate 31.

[0071] In order to further achieve the above technical effects, Figure 2 -Attached Fig.10 As shown, the flow channel driving mechanism 4 is arranged on one side of the flow channel chamber 3, and the flow channel driving mechanism 4 also includes:

[0072] The cylinder body of the pushing hydraulic cylinder 41 is fixed to one side of the flow channel chamber 3 through a sealing flange seat 411, and the cylinder body of the pushing hydraulic cylinder 41 and the sealing flange seat 411 are fixed to the flow channel chamber frame 30; a piston push rod 412 is arranged inside the pushing hydraulic cylinder 41, and the piston push rod 412 passes through the sealing flange seat 411 and is movably connected to the flow channel 3; a fixing rod 413 is arranged inside the piston push rod 412, and one end of the fixing rod 413 is fixed to the inner side of one end of the cylinder body of the pushing hydraulic cylinder 41; the pushing hydraulic cylinder 41 plays the role of pushing the flow channel chamber 3.

[0073] One end of the lifting hydraulic cylinder 42 is fixed on the bracket 43, and the other end is connected to the pushing hydraulic cylinder 41 through the lifting pin 421. The lifting hydraulic cylinder 42 is used to lift the pushing hydraulic cylinder 41, the sealing flange seat 411, the piston push rod 412, the fixing rod 413 and other components.

[0074] In order to separate the flow groove 33 from the piston rod of the pushing hydraulic cylinder 41, a recessed buckle 331 is fixed on the side wall of the flow groove 33 on the side of the pushing hydraulic cylinder 41 on one side of the flow groove 33, and a detachable buckle 422 is fixed on the piston push rod 412 close to the flow groove 33. During the upward movement of the lifting hydraulic cylinder 42 or the downward movement of the lifting hydraulic cylinder 42, the detachable buckle 422 and the recessed buckle 331 are connected or separated.

[0075] In order to further achieve the above technical effects, Figure 2 -Attached Fig.10 As shown, there are four sets of valve plate clamping devices 24 , which are arranged on both sides of the isolation valve plate 22 . After the isolation valve plate 22 is closed, the valve plate clamping devices 24 drive to clamp the isolation valve plate 22 and the sealing ring 221 .

[0076] In order to further achieve the above technical effects, Figure 2 -Attached Fig.10As shown, the pouring port 332 faces the melting crucible 11 during the process of the launder 33 descending.

[0077] In the second embodiment, a control method for a transition flow channel device of a vacuum induction furnace is disclosed, which also includes: during the casting preparation work of the vacuum induction furnace, the hydraulic cover plate mechanism automatically opens the flow channel chamber cover plate 31, places the flow channel 33 on the tank car track 32, and the right side concave buckle of the flow channel 33 is snapped into the detachable buckle 422, and the flow channel chamber cover plate 31 is automatically closed, that is, the isolation valve plate 22 enters the closed state, and then, the flow channel chamber 3 is evacuated to the same vacuum degree as the smelting chamber 1, the valve plate clamping device 24 is released, the isolation valve plate 22 is movably connected to the isolation valve cylinder 23, the sealing ring 221 on the isolation valve plate 22 leaves the isolation valve plate 21, and the isolation valve cylinder 23 is driven to drive the isolation valve plate 22 to move and open the door plate, the flow channel driving mechanism 4 drives the piston push rod to drive the flow channel 33 to move on the tank car track 32 to the flow channel support frame 12, and after the lifting hydraulic cylinder 42 pushes the flow channel driving mechanism 4 to lift up a certain angle, the detachable buckle 422 moves downward and disengages from the concave buckle 331, and the piston push rod 412 Recover it into the flow channel chamber 3, close the isolation valve plate 22, drive the valve plate clamping device 24 to ensure the sealing of the smelting chamber, wait for the temperature of the smelting crucible 11 and the composition of the molten steel to meet the technical requirements, tip the smelting crucible 11, and the molten steel flows to the flow channel 33, and the casting is completed through the casting port 332 of the flow channel 33. After the casting is completed, repeat the next flow channel replacement operation.

[0078] In order to further achieve the above technical effects, Figure 2 -Attached Fig.10 As shown, the vacuum degree of the launder chamber 3 during the transition process is the same as the vacuum degree of the smelting chamber 1 .

[0079] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A transition chute device for a vacuum induction furnace, characterized in that: include: A smelting chamber is provided on one side of the transition flow channel device of the vacuum induction furnace; An isolation valve, one side of the isolation valve being fixed on a preset axis on one side of the smelting chamber; A flow cell chamber, fixing one side of the flow cell chamber on a preset axis on the other side of the isolation valve; The isolation valve is vertically arranged between the smelting chamber and the launder chamber; A flow channel driving mechanism, the flow channel driving mechanism is fixed on a preset axis on the other side of the flow channel chamber; When the vacuum degrees of the smelting chamber and the launder chamber are the same, the isolation valve is opened, and the launder driving mechanism drives the launder to perform casting; The isolation valve further comprises: An isolation valve plate, one side of which is welded and fixed to the smelting chamber along the preset axis, and the other side of which is welded and fixed to one side of the flow channel chamber along the preset axis; the middle of the isolation valve plate is set to form a cavity structure; A slideway is fixed on the isolation valve plate in the cavity structure; a pulley is fixed above the slideway; An isolation valve plate is provided in the cavity structure of the isolation valve plate; the upper part of the isolation valve plate is fixed on the pulley; a sealing ring is provided on one side of the isolation valve plate in the direction in which the isolation valve plate is fixedly connected to the smelting chamber; An isolation valve oil cylinder, wherein the isolation valve oil cylinder is fixed above the outer side of the isolation valve plate; the piston rod of the isolation valve oil cylinder is fixed on the pulley connecting rod, and the piston rod of the isolation valve oil cylinder is movably connected to the pulley connecting rod; A valve plate clamping device, wherein a plurality of the valve plate clamping devices are arranged on the outer side of the isolation valve plate, and the plurality of the valve plate clamping devices are arranged along a circle of the isolation valve plate; one end of the valve plate clamping device is fixed to the isolation valve plate, and the other end of the valve plate clamping device clamps one side of the sealing ring arranged on one side of the isolation valve plate.

2. The transition flow channel device of the vacuum induction furnace according to claim 1, characterized in that: A smelting crucible is arranged in the smelting chamber, and a flow channel is arranged between the smelting crucible and the isolation valve; the flow channel and the smelting crucible are both arranged on a preset axis of the flow channel chamber; a flow channel support frame is fixed on one side of the smelting crucible and on the same preset axis as the flow channel chamber, and an observation window is arranged above the smelting chamber.

3. The transition flow channel device of the vacuum induction furnace according to claim 1, characterized in that: The flow cell chamber further comprises: A flow channel chamber frame is provided around the outer side of the flow channel chamber; A flow channel chamber cover plate is disposed above the flow channel chamber and on the flow channel chamber frame; A tank car guide rail is fixed on the bottom of the flow channel chamber inside the flow channel chamber frame; A flow trough, wherein rollers are arranged below the flow trough, and the flow trough is mounted on the guide rail of the tank car; the flow trough is driven by the flow trough driving mechanism, and the flow trough slides on the guide rail of the tank car; a casting port is arranged at the lower end of the flow trough; A rocker arm support, the rocker arm support is welded on one side of the flow channel chamber, the upper end of the rocker arm support is connected to the rocker arm through a pin shaft, the rocker arm support is connected to the ear seat through a bolt, the ear seat and the rocker arm are movably connected to the piston rod on the cover plate hydraulic mechanism through a pin shaft, and the rocker arm is movably connected to the flow channel chamber cover plate through a pin shaft.

4. The transition chute device of the vacuum induction furnace according to claim 1, characterized in that: The flow channel driving mechanism is arranged on one side of the flow channel chamber, and the flow channel driving mechanism further comprises: A pushing hydraulic cylinder, wherein the cylinder body of the pushing hydraulic cylinder is fixed to one side of the flow channel chamber through a sealing flange seat, and the cylinder body of the pushing hydraulic cylinder and the sealing flange seat are fixed to the frame of the flow channel chamber; a piston push rod is arranged inside the pushing hydraulic cylinder, and the piston push rod passes through the sealing flange seat and is movably connected to the flow channel; a fixing rod is arranged inside the piston push rod, and one end of the fixing rod is fixed to the inner side of one end of the cylinder body of the pushing hydraulic cylinder; A lifting hydraulic cylinder, one end of which is fixed on the bracket, and the other end is connected to the pushing hydraulic cylinder through a lifting pin shaft.

5. The transition chute device of the vacuum induction furnace according to claim 4, characterized in that: On one side of the flow groove, a recessed buckle is fixed on the side wall of the flow groove on one side of the pushing hydraulic cylinder, and a detachable buckle is fixed on the piston push rod close to the flow groove. During the upward movement of the lifting hydraulic cylinder or the downward movement of the lifting hydraulic cylinder, the detachable buckle and the recessed buckle are connected or separated.

6. The transition flow channel device of the vacuum induction furnace according to claim 3, characterized in that: The number of the valve plate clamping devices is 4 sets, which are arranged on both sides of the isolation valve plate. After the isolation valve plate is closed, the valve plate clamping devices drive to clamp the isolation valve plate and the sealing ring.

7. The transition flow channel device of the vacuum induction furnace according to claim 6, characterized in that: The pouring port is directly opposite to the smelting crucible during the descending process of the launder.

8. The control method of the transition flow channel device of the vacuum induction furnace according to any one of claims 1 to 7, characterized in that: Also includes: During the casting preparation of the vacuum induction furnace, the hydraulic cover plate mechanism automatically opens the launder chamber cover plate, places the launder on the tank car track, and the concave buckle on the right side of the launder is snapped into the detachable buckle, automatically closing the launder chamber cover plate, that is, entering the state of the isolation valve plate being closed. Then, when the launder chamber is evacuated to the same vacuum degree as the smelting chamber, the valve plate clamping device is released, the isolation valve plate is movably connected to the isolation valve cylinder, the sealing ring on the isolation valve plate leaves the isolation valve plate, and the isolation valve cylinder is driven to drive the isolation valve plate to move and open the door plate, and the launder is driven out. The driving mechanism drives the piston push rod to drive the flow channel to move on the tank car track to the flow channel support frame. After the lifting hydraulic cylinder pushes the flow channel driving mechanism to lift up a certain angle, the detachable buckle moves downward and disengages from the concave buckle, and the piston push rod is recovered into the flow channel chamber, the isolation valve plate is closed, and the valve plate clamping device is driven to ensure the sealing of the melting chamber. Wait until the temperature of the melting crucible and the composition of the molten steel meet the technical requirements, tilt the melting crucible, and the molten steel flows to the flow channel. The casting is completed through the casting port of the flow channel. After the casting is completed, repeat the next flow channel replacement operation.

9. The control method of the transition flow channel device of the vacuum induction furnace according to claim 8, characterized in that: The vacuum degree of the launder chamber during the transition process is the same as the vacuum degree of the smelting chamber.

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