Rotary diversion trench device for vacuum continuous casting furnace

Abstract

The utility model discloses a rotary diversion trench device for a vacuum continuous casting furnace, which comprises a furnace body, a heating crucible is fixedly connected to the top of the inner wall of the furnace body, the inner wall of the heating crucible is communicated with a discharge pipe, a diversion trench is arranged inside the furnace body, and a rotary mechanism is arranged outside the diversion trench. The rotating mechanism comprises a rotating air cylinder, a connecting disc, a rotating shaft, a sleeve, a support, an electric sliding rail and a second sealing door. The utility model relates to the technical field of vacuum continuous casting furnaces, in particular to a rotary diversion trench device for a vacuum continuous casting furnace, which realizes the rotation of a diversion trench through the matching of a rotating shaft, a sleeve, a bracket, an electric slide rail and a second sealing door, and solves the problem that a groove is formed in the diversion trench, so that the diversion trench cannot rotate. The problems that in the prior art, outside air easily enters a furnace body along the groove position of a flow guide groove, molten metal is affected by an unstable temperature field in the flow guide process, the local cooling speed is uneven, and a casting blank solidification structure is abnormal easily are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum continuous casting furnaces, in particular to a rotary guide trough device for vacuum continuous casting furnaces. Background Art

[0002] A vacuum continuous casting furnace is a device that uses the medium frequency induction heating principle to melt metal under vacuum or inert atmosphere conditions. It can produce equiaxed crystals, directionally solidified crystals and single crystal castings.

[0003] When the vacuum continuous casting furnace is working, the molten metal liquid needs to be guided through the guide groove so that the metal liquid can flow smoothly into the inside of the mold;

[0004] However, most traditional guide grooves are fixed through the furnace body, with one end extending to the outside of the furnace body. Since there are grooves inside the guide grooves, when the metal is melted, gas residual space will be formed in the grooves. External air can easily enter the interior of the furnace body along the groove position of the guide grooves, causing the molten metal to be affected by the unstable temperature field during the diversion process, resulting in uneven local cooling speed, which can easily cause abnormal solidification structure of the ingot. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a rotating guide trough device for a vacuum continuous casting furnace, which solves the problem that due to the grooves inside the guide trough, external air can easily enter the interior of the furnace body along the grooves of the guide trough, causing the molten metal to be affected by the unstable temperature field during the diversion process, resulting in uneven local cooling speed, which can easily cause abnormal solidification structure of the cast billet.

[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a rotating guide trough device for a vacuum continuous casting furnace, comprising a furnace body, a heating crucible fixedly connected to the top of the inner wall of the furnace body, the inner wall of the heating crucible is connected to a discharge pipe, a guide trough is provided inside the furnace body, and a rotating mechanism is provided outside the guide trough; the rotating mechanism comprises a rotating cylinder, a connecting disk, a rotating shaft, a sleeve, a bracket, an electric slide rail and a second sealing door; the rotating cylinder is arranged above the furnace body, the bottom output end of the rotating cylinder is fixedly connected to the connecting disk, the number of the connecting disks is two, the two connecting disks are fixedly connected by bolts, the bottom of one of the connecting disks is fixedly connected to the rotating shaft, the rotating shaft extends to the interior of the furnace body through an opening, the bottom of the rotating shaft is fixedly connected to the sleeve, the side wall of the sleeve is fixedly connected to the bracket, the side wall of the bracket is fixedly connected to the side wall of the guide trough, the front of the furnace body is fixedly connected to the electric slide rail, and the inner wall of the electric slide rail is slidably clamped with the second sealing door.

[0007] Preferably, the top of the rotating cylinder is fixedly connected to the outer shell by bolts, and the bottom of the outer shell is fixedly connected to the top of the furnace body by bolts.

[0008] Preferably, a support column is fixedly connected to the inner wall of the furnace body, and the support column is rotatably connected to the outer wall of the rotating shaft through a bearing.

[0009] Preferably, a first sealing door is hinged on the top of the furnace body.

[0010] Preferably, a sealing mechanism is provided inside the furnace body; the sealing mechanism includes a cylinder, a cylinder cover, a first thread, a second thread and a sealing ring; the outer wall of the cylinder is fixedly connected to the upper inner wall of the furnace body, a cylinder cover is provided above the outer wall of the cylinder, the outer wall of the cylinder is provided with a first thread, the inner wall of the cylinder cover is provided with a second thread, the second thread is threadedly connected to the first thread, a sealing ring is fixedly connected to the top of the inner wall of the cylinder cover, and the outer wall and inner wall of the sealing ring are respectively fitted to the inner wall of the cylinder and the outer wall of the rotating shaft.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the rotary guide trough device for a vacuum continuous casting furnace realizes the rotation of the guide trough through the cooperation between the rotating cylinder, the connecting plate, the rotating shaft, the sleeve, the bracket, the electric slide rail and the second sealing door, and solves the problem that the outside air easily enters the interior of the furnace body along the groove position of the guide trough due to the grooves inside the guide trough, causing the metal liquid to be affected by the unstable temperature field during the diversion process, resulting in uneven local cooling speed, which easily causes abnormal solidification structure of the ingot.

[0012] The rotating guide trough device for a vacuum continuous casting furnace effectively blocks external air from penetrating into the furnace body through the cooperation between the cylinder, the cylinder cover, the first thread, the second thread and the sealing ring, thereby maintaining a stable vacuum degree in the furnace body. It solves the problem that when the guide plate rotates, there is a certain gap between the rotating shaft and the furnace body. In a vacuum environment, gas molecules can diffuse through the gap, and the accumulated leakage will significantly affect the vacuum degree in the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the appearance;

[0015] Figure 3 for Figure 1 Schematic diagram of the structure of the middle guide trough;

[0016] Figure 4 for Figure 1 Another structural diagram of the middle guide trough;

[0017] Figure 5 for Figure 1Schematic diagram of the structure of the rotating cylinder, shaft and sleeve;

[0018] Figure 6 for Figure 1 Schematic diagram of the structure of the middle cylinder, cylinder cover and sealing ring.

[0019] In the figure: 1. furnace body; 2. first sealing door; 3. heating crucible; 4. discharge pipe; 5. electric slide rail; 6. second sealing door; 7. outer shell; 8. rotating cylinder; 9. connecting plate; 10. rotating shaft; 11. sleeve; 12. bracket; 13. guide groove; 14. support column; 15. cylinder; 16. cylinder cover; 17. first thread; 18. second thread; 19. sealing ring. DETAILED DESCRIPTION

[0020] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] Since there are grooves inside the guide trough, external air can easily enter the furnace body along the grooves of the guide trough, causing the molten metal to be affected by the unstable temperature field during the guide process, resulting in uneven local cooling rate, which can easily cause abnormal solidification structure of the ingot.

[0022] In view of this, the utility model provides a rotating guide trough device for a vacuum continuous casting furnace. Through the cooperation between a rotating cylinder, a connecting plate, a rotating shaft, a sleeve, a bracket, an electric slide rail and a second sealing door, the guide trough is rotated, which solves the problem that due to the grooves inside the guide trough, external air can easily enter the interior of the furnace body along the groove position of the guide trough, causing the molten metal to be affected by an unstable temperature field during the diversion process, resulting in uneven local cooling speed, which can easily cause abnormal solidification structure of the ingot.

[0023] Through the help of people in this field, the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the working principle below, and the electrical connection between the electrical components is completed in the order of working. The detailed connection means are well-known technologies in this field. The working principle and process are mainly introduced below, and the electrical control is no longer explained.

[0024] Example 1, by Figures 1-6It can be seen that a rotary guide trough device for a vacuum continuous casting furnace in this case includes a furnace body 1, a heating crucible 3 is fixedly connected to the top of the inner wall of the furnace body 1, the inner wall of the heating crucible 3 is connected to a discharge pipe 4, a guide trough 13 is provided inside the furnace body 1, and a rotating mechanism is provided outside the guide trough 13; the rotating mechanism includes a rotating cylinder 8, a connecting plate 9, a rotating shaft 10, a sleeve 11, a bracket 12, an electric slide rail 5 and a second sealing door 6; the rotating cylinder 8 is provided above the furnace body 1, and the bottom of the rotating cylinder 8 is provided with a discharge pipe 4. The outlet end is fixedly connected to a connecting plate 9, and there are two connecting plates 9. The two connecting plates 9 are fixedly connected by bolts. The bottom of one connecting plate 9 is fixedly connected to a rotating shaft 10, and the rotating shaft 10 extends to the interior of the furnace body 1 through an opening. The bottom of the rotating shaft 10 is fixedly connected to a sleeve 11, and the side wall of the sleeve 11 is fixedly connected to a bracket 12. The side wall of the bracket 12 is fixedly connected to the side wall of the guide groove 13. The front of the furnace body 1 is fixedly connected to an electric slide rail 5, and the inner wall of the electric slide rail 5 is slidably clamped with a second sealing door 6.

[0025] In the specific implementation process, it is worth noting that the model of the rotary cylinder 8 is CRQB2B63-90S. The connection method between the rotary cylinder 8 and the external controller is to connect it to the external air source processing unit (filter + pressure reducing valve + oil mist collector) through a vacuum-resistant bellows. The air source pressure is set to 0.5MPa. The control signal is connected to the PLC output module using an M12 circular connector. The signal type is a 24VDC switching signal. For position feedback, two D-M9 magnetic switches are installed and connected to the PLC input module through an M8 connector to realize the rotation into position signal. Feedback, there are two electric slides 5, and a synchronizer is installed between the two electric slides 5 to enable the two electric slides 5 to work simultaneously. The model of the electric slide 5 is EGH15CA. The connection method between the electric slide 5 and the external controller is: the main controller is Mitsubishi FX5U-32MT / ES-APLC, the communication protocol is MODBUSTCP synchronization mechanism, master-slave mode, electric slide No. 1 is the main axis, No. 2 is the slave axis, the synchronization accuracy is ±0.05mm, the model of the heating crucible 3 is GHL-150 induction heating crucible, the heating crucible 3 and the control The connection method of the device is wired. The temperature sensor installed near the heating crucible 3 is connected to the controller via a high-temperature resistant shielded cable, which is used to provide real-time feedback on the temperature of the molten metal in the crucible. At the same time, the controller sends control instructions to the power control unit of the heating crucible 3 via the same shielded cable to adjust the heating power. Based on the PID adjustment algorithm, combined with fuzzy control and other strategies, the temperature of the heating crucible 3 is precisely controlled to ensure that the molten metal is maintained within the temperature range required for continuous casting. The exterior of the discharge pipe 4 is fixedly connected to the valve with bolts. The valve model is a 200-02 high-temperature vacuum ball valve. The valve and controller are connected using a shielded cable. The valve is equipped with a solenoid valve drive device and a position feedback sensor. The solenoid valve is used to receive the switching signal from the controller to control the opening and closing of the valve. The operating voltage of the solenoid valve is DC24V. It is connected to the output module of the controller via the power core of the shielded cable. The position feedback sensor is a proximity switch that can monitor the opening and closing status of the valve in real time and feedback the signal to the input module of the controller via the signal core of the shielded cable to achieve real-time monitoring of the valve status.

[0026] The material of the guide groove 13 can be a ceramic-based composite material, which can be selected according to actual conditions to meet the working adjustment. When the furnace body 1 is working, it is first evacuated or filled with protective gas to prevent the metal liquid from reacting with oxygen to produce oxides, thereby forming a vacuum system. Then, the staff puts metal particles into the interior of the heating crucible 3, and the heating crucible 3 heats the metal particles into metal liquid. After completion, the controller starts the rotating cylinder 8, and at the same time, the controller starts the electric slide 5. The rotating cylinder 8 and the electric slide 5 work at the same time. The electric slide 5 drives the second sealing door 6 on both sides to move and open the furnace body 1. After completion, the controller stops the electric slide 5, and the rotating cylinder 8 drives the connecting plate 9 to rotate, and the connecting plate 9 drives the rotating shaft 10. The rotating shaft 10 drives the sleeve 11 to rotate, and the sleeve 11 drives the bracket 12 to rotate. The bracket 12 drives the guide groove 13 to rotate, and the guide groove 13 is rotated ninety degrees. After completion, the controller stops the rotating cylinder 8. At this time, the starting end of the guide groove 13 rotates to the outside of the furnace body 1, and the end of the guide groove 13 is aligned with the discharge pipe 4. After completion, the controller starts the valve on the discharge pipe 4 and opens the discharge pipe 4. At this time, the molten metal liquid inside the heating crucible 3 flows to the inside of the guide groove 13 through the discharge pipe 4. Finally, the metal liquid flows smoothly into the mold through the guide groove 13. After the operation is completed, the controller controls the valve to close the discharge pipe 4. The controller starts the rotating cylinder 8 and the electric slide 5 again to rotate the guide groove 13 to the inside of the furnace body 1. The electric slide 5 drives the second sealing door 6 to close the furnace body 1. The furnace body runs smoothly, with high precision and good adaptability. It can be used for a long time in the vacuum furnace to ensure continuous casting of the continuous casting furnace, ensure uniform material organization, reduce defects, and improve efficiency according to the requirements of the continuous casting process. It is suitable for the production of various metals and alloys, and realizes the rotation of the guide groove 13.

[0027] Furthermore, the top of the rotating cylinder 8 is fixedly connected to the outer shell 7 by bolts, and the bottom of the outer shell 7 is fixedly connected to the top of the furnace body 1 by bolts.

[0028] During the specific implementation process, it is worth noting that heat dissipation holes can be opened on the outer wall of the shell 7 to dissipate heat from the rotating cylinder 8. The shell 7 covers the rotating cylinder 8, thereby protecting the rotating cylinder 8. If necessary, a water cooling mechanism can be set inside the shell 7 to prevent the rotating cylinder 8 from being damaged or unable to be used normally due to the high temperature inside the furnace body 1.

[0029] Furthermore, a support column 14 is fixedly connected to the inner wall of the furnace body 1 , and the support column 14 is rotatably connected to the outer wall of the rotating shaft 10 through a bearing.

[0030] During the specific implementation process, it is worth noting that the bearings are made of high-temperature resistant materials. The specific material can be selected according to actual conditions as long as it meets the working conditions. The support column 14 rotates the shaft 10, making the shaft 10 more stable during rotation.

[0031] Furthermore, a first sealing door 2 is hinged on the top of the furnace body 1 .

[0032] During the specific implementation process, it is worth noting that when the staff puts the metal particles into the interior of the heating crucible 3, the staff holds the handle on the first sealed door 2, thereby rotating the first sealed door 2, opening the top of the furnace body 1, and putting the metal particles into the interior of the heating crucible 3. After completion, the first sealed door 2 is closed.

[0033] Example 2, by Figure 1 、 5 As can be seen from Figures 6 and 7, a sealing mechanism is provided inside the furnace body 1; the sealing mechanism includes a cylinder 15, a cylinder cover 16, a first thread 17, a second thread 18 and a sealing ring 19; the outer wall of the cylinder 15 is fixedly connected to the upper inner wall of the furnace body 1, and a cylinder cover 16 is provided above the outer wall of the cylinder 15. The outer wall of the cylinder 15 is provided with a first thread 17, and the inner wall of the cylinder cover 16 is provided with a second thread 18, which is threadedly connected to the first thread 17. A sealing ring 19 is fixedly connected to the top of the inner wall of the cylinder cover 16, and the outer wall and inner wall of the sealing ring 19 are respectively fitted to the inner wall of the cylinder 15 and the outer wall of the rotating shaft 10.

[0034] During the specific implementation process, it is worth noting that the sealing ring 19 can be made of ceramic fiber, silicon carbide, aluminum silicate fiber and any material that meets the usage scenario. After the rotating shaft 10 is installed in place, the staff will insert the cylinder cover 16 into the rotating shaft 10, and the second thread 18 on the inner wall of the cylinder cover 16 is threadedly connected with the first thread 17 on the outer wall of the cylinder 15 to achieve a tight assembly of the cylinder cover 16 and the cylinder 15. At the same time, the cylinder cover 16 drives the sealing ring 19 to be inserted into the cylinder 15. The outer wall of the sealing ring 19 fits the inner wall of the cylinder 15, and the inner wall fits the outer wall of the rotating shaft 10, filling the gap between the rotating shaft 10 and the cylinder 15, effectively blocking external air from penetrating into the interior of the furnace body 1, and maintaining the stable vacuum degree in the furnace body 1.

[0035] It is understandable that the necessary structures in the above embodiments should all be made of reasonably selected high-temperature resistant materials and models to ensure the normal operation of the entire equipment.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary guide trough device for a vacuum continuous casting furnace, comprising a furnace body (1), characterized in that: A heating crucible (3) is fixedly connected to the top of the inner wall of the furnace body (1), a discharge pipe (4) is connected to the inner wall of the heating crucible (3), a guide groove (13) is provided inside the furnace body (1), and a rotating mechanism is provided outside the guide groove (13); The rotating mechanism comprises a rotating cylinder (8), a connecting plate (9), a rotating shaft (10), a sleeve (11), a bracket (12), an electric slide rail (5) and a second sealing door (6); The rotating cylinder (8) is arranged above the furnace body (1), and the bottom output end of the rotating cylinder (8) is fixedly connected to a connecting disk (9), the number of the connecting disks (9) is two, and the two connecting disks (9) are fixedly connected by bolts. The bottom of one connecting disk (9) is fixedly connected to a rotating shaft (10), and the rotating shaft (10) extends to the inside of the furnace body (1) through an opening. The bottom of the rotating shaft (10) is fixedly connected to a sleeve (11), and the side wall of the sleeve (11) is fixedly connected to a bracket (12), and the side wall of the bracket (12) is fixedly connected to the side wall of the guide groove (13). The front of the furnace body (1) is fixedly connected to an electric slide rail (5), and the inner wall of the electric slide rail (5) is slidably connected to a second sealing door (6).

2. The rotary guide trough device for a vacuum continuous casting furnace according to claim 1, characterized in that: The top of the rotating cylinder (8) is fixedly connected to the outer shell (7) by bolts, and the bottom of the outer shell (7) is fixedly connected to the top of the furnace body (1) by bolts.

3. The rotary guide trough device for a vacuum continuous casting furnace according to claim 1, characterized in that: A support column (14) is fixedly connected to the inner wall of the furnace body (1), and the support column (14) is rotatably connected to the outer wall of the rotating shaft (10) via a bearing.

4. The rotary guide trough device for a vacuum continuous casting furnace according to claim 1, characterized in that: A first sealing door (2) is hingedly connected to the top of the furnace body (1).

5. The rotary guide trough device for a vacuum continuous casting furnace according to claim 1, characterized in that: A sealing mechanism is provided inside the furnace body (1); The sealing mechanism comprises a cylinder (15), a cylinder cover (16), a first thread (17), a second thread (18) and a sealing ring (19); The outer wall of the cylinder (15) is fixedly connected to the upper inner wall of the furnace body (1); a cylinder cover (16) is provided above the outer wall of the cylinder (15); a first thread (17) is provided on the outer wall of the cylinder (15); a second thread (18) is provided on the inner wall of the cylinder cover (16); the second thread (18) is threadedly connected to the first thread (17); a sealing ring (19) is fixedly connected to the top of the inner wall of the cylinder cover (16); the outer wall and inner wall of the sealing ring (19) are respectively attached to the inner wall of the cylinder (15) and the outer wall of the rotating shaft (10).

Images