A front-furnace inoculation device

Abstract

The present invention relates to the field of iron manufacturing, and discloses a ladle inoculation device, which includes a cover. A support box is rotatably connected to the lower side of the cover, and a storage cylinder is rotatably connected to one end of the support box; a pre-addition mechanism, which is connected to the cover and one end of which extends into the storage cylinder; a discharge pipe, which is fixedly connected to one side of the storage cylinder and is provided with a post-addition mechanism connected to the cover; a perturbation mechanism, which is connected to the cover and the output end of which is connected to the post-addition mechanism. The present invention can add inoculants at different stages, ensure its uniformity and stability, ensure the inoculation effect, improve the quality of the finished product, and at the same time complete the addition of the inoculant at one time, reduce manual intervention, and ensure the progress of production.

Description

Technical Field

[0001] The invention relates to the field of iron manufacturing, and in particular to a furnace front inoculation device. Background Art

[0002] The three-level inoculation treatment is generally used for the furnace inoculation. The three-level inoculation treatment refers to the inoculation in the ladle, the flow inoculation and the inoculation in the mold. The inoculant is 75FeSi. The current application method is generally 1. Inoculation in the ladle, the amount of inoculant added accounts for 0.4-0.6% of the weight of the molten steel, and the particle size of the inoculant is 8-15mm. The furnace inoculant is divided into two parts according to the weight ratio of 2:1. The smaller part is placed at the bottom of the ladle, together with the spheroidizing agent, and covered with a thin iron plate or crushed iron. The iron plate is not more than 1mm thick; the larger part is added with the molten iron flow when the molten iron is discharged. The furnace inoculant enters the ladle with the molten iron and is mixed in the molten iron ladle. 2. Flow inoculation, the amount of inoculant added accounts for 0.3-0.5% of the weight of the molten steel, and the particle size of the inoculant is 3-8mm. The inoculant is added to the molten metal flow during the pouring process, and flows into the mold cavity with the molten metal to play a role in inoculation. 3. Inoculation in the mold, the amount of inoculant added accounts for 0.3-0.5% of the weight of the molten steel, and the inoculant in front of the furnace is in block form. The inoculant is placed on the horizontal runner. When the molten metal flows through the horizontal runner, the inoculant is gradually flushed into the mold cavity to play a role in inoculation.

[0003] However, the existing ladle inoculation is placed at the bottom of the molten steel to be stationary, and the inoculation with the flow is generally added by a feeder, but it floats on the surface, affecting the later inoculation, and the high temperature of the molten iron may affect the adding device. Summary of the invention

[0004] In order to solve the technical problem of poor addition, the present invention provides a furnace inoculation device.

[0005] The present invention is implemented by the following technical scheme: a furnace incubation device, comprising: a cover, the lower side of the cover is rotatably connected to a support box, one end of the support box is rotatably connected to a storage cylinder; an early adding mechanism, which is connected to the cover and one end of which extends into the storage cylinder; a discharge pipe, which is fixedly connected to one side of the storage cylinder and is equipped with a late adding mechanism connected to the cover; a disturbance mechanism, which is connected to the cover and an output end of which is connected to the late adding mechanism; a hydraulic cylinder 1, one end of which is rotatably connected to the cover and the other end of which is rotatably connected to the support box, both sides of the support box are rotatably connected to symmetrically arranged hydraulic cylinders 2, and the other end of the hydraulic cylinder 2 is rotatably connected to the storage cylinder.

[0006] As a further improvement of the above scheme, the early adding mechanism includes: a raw material box 1, which is fixedly connected to the cover, and one side of which is connected to a hose 1, and one side of the hose 1 is connected to a discharge pump located in the raw material box 1; a round tube, the outer wall of which is rotatably connected to a sleeve ring, the sleeve ring is fixedly connected to the hose 1, the bottom of the round tube is fixedly connected to a T-shaped rod, the bottom of the T-shaped rod is rotatably connected to a plurality of passing balls located in the storage cylinder, and the passing balls are provided with a plurality of passing holes; a rotating ring, which is rotatably connected to the cover and fixedly adjusted with the T-shaped rod, a gear ring is provided on the rotating ring, one side of the gear ring is meshingly connected to a transmission component 1, and the transmission component 1 is connected to the disturbance mechanism; a motor 1, which is fixedly connected to the rotating ring, and the output end of the motor is connected to a driving tooth meshingly connected to the T-shaped rod.

[0007] As a further improvement of the above scheme, the later adding mechanism includes: a second raw material box, which is fixedly connected to the cover and has a feed pump fixedly connected inside; a bending tube, one end of which is connected to the output end of the feed pump and the other end of which is connected to a second hose; a feeder, which is connected to the second hose and has both ends connected to the disturbance mechanism, and one end of the feeder extends into the discharge pipe.

[0008] As a further improvement of the above scheme, the feeder includes: a disturbance rod, a driving shaft is rotatably sleeved in the middle, the outer wall of the driving shaft is provided with a packaging ring fixedly connected to the disturbance rod, the top of the disturbance rod is connected to hose 2, and the two ends of the disturbance rod are connected to the disturbance mechanism; a transmission rod, which is transmission-connected to the driving shaft and one end of which is transmission-connected to the driving rod, a plurality of transmission assemblies 2 are fixedly connected to the horizontal transmission rod, and a spiral rod is fixedly connected to one end of the vertical transmission rod; a guide cylinder, one end of which is rotatably sleeved with the disturbance rod and is located on the outside of the spiral rod, the bottom of the guide cylinder is rotatably sleeved with a discharge plate fixedly connected to the spiral rod, and a plurality of vortex circles are provided and are located on the outside of the guide cylinder.

[0009] As a further improvement of the above solution, a heat-insulating plate is sleeved on the outer side of the guide cylinder 33, an exhaust pipe is connected to the heat-insulating plate, a plurality of injection holes are arranged on the discharge plate, and a plurality of screens are arranged inside the disturbance rod.

[0010] As a further improvement of the above scheme, the disturbance mechanism includes: a power box, which is fixedly connected to the cover, and a motor 2 is fixedly connected inside the power box, the output end of the motor 2 is connected to a transmission 1, and the output end of the transmission 1 is transmission-connected to a transmission assembly 1; a follower shaft, one end of which is transmission-connected to the output end of the transmission 1, and one end of the follower shaft is fixedly connected to a moving box, and the follower shaft is rotationally connected to the cover; a telescopic rod, one end of which is fixedly connected to the cover, and the other end of which is fixedly connected to the moving box; a transmission 2, which is arranged in the moving box, and the output end of which is connected to a driving ring rotationally connected to the moving box; an inclined plate, a plurality of contact rollers are rotationally connected to the outer side of which, and the contact rollers are transmission-connected to the driving ring, the middle of the inclined plate is fixedly connected to the telescopic shaft, and the outer wall of the telescopic shaft is rotationally connected to the transmission box, and a transmission 3 is fixedly connected to the transmission box and is transmission-connected to the output end of the transmission 3; a support plate, which is fixedly connected to the cover, and a slide groove is arranged inside the support plate, and the slide groove sliding sleeve is provided with a slider rotationally sleeved with the drive shaft.

[0011] As a further improvement of the above solution, the follower shaft includes a sleeve rod transmission-connected to the first transmission, the sleeve rod is connected to a moving rod rotationally connected to the moving box through a spline transmission, and the moving rod is transmission-connected to the second transmission.

[0012] As a further improvement of the above solution, the slider is fixedly connected to the transmission box, one side of the slider is fixedly connected to an electromagnetic brake located outside the drive shaft, and the cross-section of the slide groove adopts a T-shaped structure.

[0013] As a further improvement of the above solution, a guide ring is provided on the discharge pipe, and the guide ring cooperates with the temperature insulation plate. The top of the storage cylinder is fixedly connected with an anti-overflow ring in contact with the sealing cover.

[0014] As a further improvement of the above solution, the sealing cover, the storage cylinder and the insulation plate are all hollow, one side of the raw material box is fixedly connected with an addition pipe, and a control mechanism is arranged in the power box.

[0015] 1. By moving the early adding mechanism and the late adding mechanism, the inoculant at different stages can be added to ensure its uniformity and stability, ensure the inoculation effect, increase the quality of the finished product, and complete the inoculant addition work at one time, reduce manual intervention, and ensure the production.

[0016] 2. Through the coordination of multiple devices, the molten iron can be protected to reduce the risk of overflow or overturning. At the same time, through multiple hollow treatments, the temperature transfer can be reduced to ensure the safety of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic diagram of the front view cross-section of the present invention;

[0018] Figure 2 is Figure 1 schematic diagram of the left view cross-section of D-D in

[0019] Figure 3 is Figure 1 schematic diagram of the left view cross-section of S-S in

[0020] Figure 4 top view schematic diagram of the present invention;

[0021] Figure 5 partial front view cross-section schematic diagram of the present invention;

[0022] Figure 6 partial left view cross-section schematic diagram at D-D;

[0023] Figure 7 partial front view cross-section schematic diagram of the T-shaped rod;

[0024] Figure 8 front view cross-section schematic diagram of the feeder;

[0025] Figure 9 is Figure 6 enlarged structural schematic diagram at A in

[0026] Figure 10 front view schematic diagram of the drive ring.

[0027] Main symbol description:

[0028] 1. Cover; 2. First raw material box; 3. First hose; 4. Driving tooth; 5. First motor; 6. Circular tube; 7. T-shaped rod; 8. First hydraulic cylinder; 9. Support box; 10. Passing ball; 11. Storage cylinder; 12. Discharge pipe; 13. Feeder; 14. Feed pump; 15. Bent pipe; 16. Second raw material box; 17. Power box; 18. Second motor; 19. Stirring mechanism; 20. Second hydraulic cylinder; 21. First transmission component; 22. Gear ring; 23. Rotating ring; 24. Second hose; 25. Support plate; 27. Stirring rod; 28. Heat insulation plate; 29. Air extraction pipe; 30. Screw rod; 31. Vortex ring; 32. Discharge plate; 33. Guide cylinder; 34. Transmission rod; 35. Second transmission component; 36. Encapsulation ring; 37. Drive shaft; 38. Sieve; 39. Through hole; 40. Inclined plate; 41. Telescopic rod; 42. Transmission box; 43. Moving box; 44. Follow-up shaft; 45. Contact roller; 46. Drive ring; 47. Telescopic shaft; 48. Slide block; 49. Electromagnetic brake; 50. Third transmission; 51. Second transmission. Detailed implementation manners

[0029] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of non-conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0030] Embodiment

[0031] Please combine Figure 1-10 ,

[0032] In the embodiment of the present application, the implementation principle of a pre-furnace inoculation device is as follows: A pre-furnace inoculation device includes: a cover 1, a support box 9 is rotatably connected to the lower side of the cover 1, a storage cylinder 11 is rotatably connected to one end of the support box 9. The cover 1 and 9 are used for connecting and supporting the device, and the storage cylinder 11 is used for storage. A pre-addition mechanism is connected to the cover 1 and one end of it extends into the storage cylinder 11. The pre-addition mechanism is used for adding the inoculant in the package and performing certain auxiliary work. A discharge pipe 12 is fixedly connected to one side of the storage cylinder 11, and a post-addition mechanism connected to the cover 1 is matched with it. The molten iron is discharged through the discharge pipe 12, and at the same time, the inoculant is added for the second time through the post-addition mechanism. A disturbance mechanism 19 is connected to the cover 1 and its output end is connected to the post-addition mechanism. The disturbance mechanism 19 supplies power and drives the movement of the post-addition mechanism. A first hydraulic cylinder 8 has one end rotatably connected to the cover 1 and the other end rotatably connected to the support box 9. Symmetrically arranged second hydraulic cylinders are rotatably connected to both sides of the support box 9, and the other ends of the second hydraulic cylinders are rotatably connected to the storage cylinder 11. The support box 8 and the second hydraulic cylinders can be extended to flip the cover 1 or the storage cylinder 11 to meet the working requirements.

[0033] The pre-addition mechanism includes: a first raw material tank 2, which is fixedly connected to the cover 1, and a first hose 3 is connected to one side thereof. One side of the first hose 3 is connected to a discharge pump located inside the first raw material tank 2. The first raw material tank 2 stores raw materials, and then they enter the circular tube 6 through the first hose 3. For the circular tube 6, a socket ring is rotatably connected to its outer wall, and the socket ring is fixedly connected to the circular tube 3. The bottom of the circular tube 6 is fixedly connected to a T-shaped rod 7. The bottom of the T-shaped rod 7 is rotatably connected to a plurality of through balls 10 located inside the storage cylinder 11. A plurality of through holes 39 are provided on the through balls 10. The raw materials entering the circular tube 6 enter the storage cylinder 11 through the T-shaped rod 7, the through balls 10, and the through holes 39, realizing addition and later inoculation. A rotating ring 23, which is rotatably connected to the cover 1 and fixedly adjusted with the T-shaped rod 7. A toothed ring 22 is provided on the rotating ring 23. One side of the toothed ring 22 is meshed with a first transmission component 21, and the first transmission component 21 is connected to the disturbance mechanism 19. Through the transmission of the first transmission component 21, the toothed ring 22 and the rotating ring 23 rotate, further driving the T-shaped rod 7 to rotate, meeting the need for different movement trajectories. A first motor 5, which is fixedly connected to the rotating ring 23, and its output end is connected to a driving gear 4 that meshes with the T-shaped rod 7. By the operation of the first motor 5, the driving gear 4 rotates, further driving the T-shaped rod 7 to move up and down.

[0034] The post-addition mechanism includes: a second raw material tank, which is fixedly connected to the cover 1, and a feeding pump 14 is fixedly connected inside it;

[0035] A bent tube 15, one end of which is connected to the output end of the feeding pump 14, and the other end is connected to a second hose 24. The second raw material tank stores raw materials, and then through the supply of the feeding pump 14, they enter the second hose 24 through the bent tube 15. A feeder 13, which is connected to the second hose 24 and both ends thereof are connected to the disturbance mechanism 19. One end of the feeder 13 extends into the discharge pipe 12. The raw materials in the second hose 24 enter the feeder 13 and then enter the discharge pipe 12, realizing the addition of in-stream inoculant.

[0036] The feeder 13 includes: a disturbance rod 27, with a driving shaft 37 rotatably sleeved in the middle thereof. An encapsulation ring 36 fixedly connected to the disturbance rod 27 is provided on the outer wall of the driving shaft 37. The top of the disturbance rod 27 is connected to the second hose 24, and both ends of the disturbance rod 27 are connected to the disturbance mechanism 19. The disturbance rod 27 is used for temporary storage, and the encapsulation ring 36 provides protection. At the same time, the rotation of the driving shaft 37 driven by the outside realizes the need for transmission. A transmission rod 34, which is in transmission connection with the driving shaft 37, and one end of which is in transmission connection with a driving rod. A plurality of second transmission components 35 are fixedly connected to the horizontally arranged transmission rod 34. A spiral rod 30 is fixedly connected to one end of the vertically arranged transmission rod 34. A guiding cylinder 33, one end of which is rotatably sleeved on the disturbance rod 27 and is located outside the spiral rod 30. A discharge plate 32 fixedly connected to the spiral rod 30 is rotatably sleeved at the bottom of the guiding cylinder 33. Through the transmission of the transmission rod 34, the torque on the driving shaft 37 is transmitted, further driving the second transmission components 35 and the spiral rod 30 to rotate. Among them, the rotation of the spiral rod 30 drives the rotation of the discharge plate 32. A plurality of vortex rings 31 are provided and are located outside the guiding cylinder 33. In subsequent work, the vortex rings 31 are connected to a high-frequency current, causing internal heating, so that the possibly remaining solidified iron becomes liquid again, realizing dripping. A heat insulation plate 28 is sleeved outside the guiding cylinder 33. An air extraction pipe 29 is connected to the heat insulation plate 28. A plurality of injection holes are provided on the discharge plate 32. A plurality of screen meshes 38 are provided inside the disturbance rod 27. The heat insulation plate 28 provides a certain degree of protection. At the same time, the inside can be evacuated through the air extraction pipe 29 to reduce heat transfer. The screen meshes 38 are required for moving screening.

[0037] The disturbing mechanism 19 includes: a power box 17 fixedly connected to the cover 1, with a second motor 18 fixedly connected inside it. The output end of the second motor 18 is connected to a first transmission, and the output end of the first transmission is in transmission connection with a first transmission component 21. The power box 17 is protected, and then through the transmission of the second motor 18 and the first transmission, the torque is transmitted to the first transmission component 21 and the follower shaft 44. One end of the follower shaft 44 is in transmission connection with the output end of the first transmission. A moving box 43 is fixedly connected to one end of the follower shaft 44. The follower shaft 44 is rotationally connected to 1. Through the transmission of the follower shaft 44 and the second transmission 51, the moving box 43 is enabled to rotate. A telescopic rod 41 has one end fixedly connected to the cover 1 and the other end fixedly connected to the moving box 43. The second transmission 51 is arranged inside the moving box 43, and its output end is connected to a driving ring 46 rotationally connected to the moving box 43. Through the drive of the telescopic rod 41, the moving box 43 can move up and down. An inclined plate 40 has a plurality of contact rollers 45 rotatably connected to its outer side. The contact rollers 45 are in transmission connection with the driving ring 46. A telescopic shaft 47 is fixedly connected to the middle of the inclined plate 40. A transmission box 42 is rotatably connected to the outer wall of the telescopic shaft 47. A third transmission 50 in transmission connection with the telescopic shaft 47 is fixedly connected inside the transmission box 42. One end of a drive shaft 37 is in transmission connection with the output end of the third transmission 50. Through the engagement between the contact rollers 45 and the driving ring 46, the inclined plate 40 is enabled to rotate. At the same time, since the inclined plate 40 is inclined, during the rotation process, the driving ring 47 is driven to lift, further driving the transmission box 42 to move. A support plate 25 is fixedly connected to the cover 1 and has a chute inside it. A slider 48 rotatably sleeved with the drive shaft 37 is slidably sleeved in the chute. The support plate 25 and the chute are used for limitation. Through the transmission of the third transmission 50, the drive shaft 37 is enabled to rotate and the entire disturbing rod 27 to move up and down, making the movement trajectory of the discharge plate 32 relative to the discharge pipe 12 in a wavy shape.

[0038] The follower shaft 44 includes a sleeve rod that is drivingly connected to the first transmission of the transmission. The sleeve rod is drivingly connected by a spline to a moving rod that is rotatably connected to the moving box 43. The moving rod is drivingly connected to the second transmission 51 of the transmission. Through the interaction between the moving rod and the sleeve rod, the transmission of torque and the movement of the position can be achieved. The slider 48 is fixedly connected to the transmission box 42. One side of the slider 48 is fixedly connected with an electromagnetic brake 49 located outside the drive shaft 37. The cross-section of the chute adopts a T-shaped structure. Through the electromagnetic brake 49, the drive shaft 37 can be limited to achieve relative stability. A guiding ring is provided on the discharge pipe 12. The guiding ring cooperates with the heat insulation plate 28. The top of the storage cylinder 11 is fixedly connected with an anti-overflow ring that contacts the cover 1. The guiding ring guides to facilitate the entry of the heat insulation plate 28 and ensure the progress of the work. The cover 1, the support box 9, and the heat insulation plate 28 are all hollow. One side of the support box 2 is fixedly connected with a feeding pipe. A control mechanism is provided in the power box 17. The feeding pipe facilitates the addition of raw materials. Among them, the T-shaped rod 7 and the heat insulation plate 28 are both made of metal ceramic structure to ensure high-temperature tolerance.

[0039] The implementation principle of the embodiment of this application is as follows:

[0040] When working, the molten iron is placed into the storage cylinder 11 through an external device. Then, through the T-shaped rod 8, the cover 1 is flipped to achieve sealing. At this time, through the work of the feeding pump, the raw materials in the cover 2 pass through the hose 1, the round pipe 6, the T-shaped rod 7, and enter the storage cylinder 11 through the ball 10 and the suction pipe 29, realizing the addition of the in-package inoculant. At the same time, through the transmission of the first transmission component 21 and the drive of the drive gear 4, the T-shaped rod 7 can be rotated and moved to ensure the stability of the addition. After the in-package inoculation is completed, through the action of the second hydraulic cylinder, the storage cylinder 11 can be slightly tilted. At the same time, through the external action, the entire device can be tilted, so that the molten iron overflows through the discharge pipe 12. At this time, through the action of the feeding pump 14, the in-stream inoculant passes through the bent pipe 15 and the hose 24 and enters the disturbing rod 27. At the same time, through the push of the screw rod 30, it is sprayed out through the discharge plate 32, realizing the addition of the in-stream inoculant. And at the same time, the second motor 18 works. Through the transmission of the follower shaft 44, the second transmission 51, and the drive ring 46, the contact roller 45 and the inclined plate 40 are rotated. At the same time, due to the inclination angle of the inclined plate 40, the drive ring 47 moves up and down periodically, thereby driving the movement of the transmission box 42 and the telescopic shaft 48, and further driving the movement of the entire disturbing rod 27 and the rotation of the drive shaft 37. At the end, through the telescopic rod 41, the heat insulation plate 28 is moved out of the discharge pipe 12 for cleaning, replacement, or other work needs.

[0041] The above embodiments are only the preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. A pre - furnace inoculation device, characterized in that, it includes: A cover, a support box is rotatably connected to the lower side of the cover, and a storage cylinder is rotatably connected to one end of the support box; A pre - addition mechanism, which is connected to the cover and one end of which extends into the storage cylinder; A discharge pipe, which is fixedly connected to one side of the storage cylinder, and a post - addition mechanism connected to the cover is fitted thereon; A perturbation mechanism, which is connected to the cover and the output end of which is connected to the post - addition mechanism; A first hydraulic cylinder, one end of which is rotatably connected to the cover and the other end is rotatably connected to the support box. Symmetrically arranged second hydraulic cylinders are rotatably connected to both sides of the support box, and the other end of the second hydraulic cylinder is rotatably connected to the storage cylinder; The pre - addition mechanism includes: A first raw material box, which is fixedly connected to the cover, a first hose is connected to one side thereof, and a discharge pump located inside the first raw material box is connected to one side of the first hose; A round pipe, a socket ring is rotatably connected to the outer wall thereof, the socket ring is fixedly connected to the first hose, a T - shaped rod is fixedly connected to the bottom of the round pipe, and a plurality of through - balls located inside the storage cylinder are rotatably connected to the bottom of the T - shaped rod. A plurality of through - holes are provided on the through - balls; A rotating ring, which is rotatably connected to the cover and fixedly adjusted with the T - shaped rod. A toothed ring is provided on the rotating ring, and a first transmission component is meshed and connected to one side of the toothed ring. The first transmission component is connected to the perturbation mechanism; A first motor, which is fixedly connected to the rotating ring, and a driving tooth meshed with the T - shaped rod is connected to the output end thereof; The post - addition mechanism includes: A second raw material box, which is fixedly connected to the cover, and a feeding pump is fixedly connected to the inside thereof; A bent pipe, one end of which is connected to the output end of the feeding pump and the other end is connected to a second hose; A feeder, which is connected to the second hose and both ends of which are connected to the perturbation mechanism. One end of the feeder extends into the discharge pipe.

2. A pre - furnace inoculation device according to claim 1, characterized in that, The feeder includes: A perturbation rod, a driving shaft is rotatably sleeved in the middle thereof, a packaging ring fixedly connected to the perturbation rod is provided on the outer wall of the driving shaft. The top of the perturbation rod is connected to the second hose, and both ends of the perturbation rod are connected to the perturbation mechanism; A transmission rod, which is in transmission connection with the driving shaft, and a driving rod is in transmission connection with one end thereof. A plurality of second transmission components are fixedly connected to the transmission rod located horizontally, and a spiral rod is fixedly connected to one end of the transmission rod located vertically; A guiding cylinder, one end of which is rotatably sleeved with the perturbation rod and is located outside the spiral rod. A discharge plate fixedly connected to the spiral rod is rotatably sleeved at the bottom of the guiding cylinder; A plurality of vortex rings, which are provided and located outside the guiding cylinder.

3. A pre - furnace inoculation device according to claim 2, characterized in that, A heat - insulating plate is sleeved outside the guiding cylinder, an air extraction pipe is connected to the heat - insulating plate, a plurality of injection holes are provided on the discharge plate, and a plurality of sieves are provided inside the perturbation rod.

4. A pre - furnace inoculation device according to claim 2, characterized in that, The perturbation mechanism includes: The power box is fixedly connected to the cover, and a second motor is fixedly connected inside it. The output end of the second motor is connected to a first transmission, and the output end of the first transmission is in transmission connection with a first transmission component; The follower shaft, one end of which is in transmission connection with the output end of the first transmission. One end of the follower shaft is fixedly connected to a moving box, and the follower shaft is rotatably connected to the cover; The telescopic rod, one end of which is fixedly connected to the cover and the other end is fixedly connected to the moving box; The second transmission is arranged inside the moving box, and its output end is connected to a driving ring that is rotatably connected to the moving box; The inclined plate, on the outer side of which a plurality of contact rollers are rotatably connected. The contact rollers are in transmission connection with the driving ring. A telescopic shaft is fixedly connected to the middle of the inclined plate, and a transmission box is rotatably connected to the outer wall of the telescopic shaft. A third transmission that is in transmission connection with the telescopic shaft is fixedly connected inside the transmission box. One end of the driving shaft is in transmission connection with the output end of the third transmission; The support plate is fixedly connected to the cover, and a chute is arranged inside it. A slider that is rotatably sleeved with the driving shaft is slidably sleeved in the chute; The follower shaft includes a sleeve rod that is in transmission connection with the first transmission. The sleeve rod is in spline transmission connection with a moving rod that is rotatably connected to the moving box, and the moving rod is in transmission connection with the second transmission.

5. The pre-inoculation device in front of the furnace according to claim 4, characterized in that, The slider is fixedly connected to the transmission box. An electromagnetic brake located outside the driving shaft is fixedly connected to one side of the slider, and the cross-section of the chute adopts a T-shaped structure.

6. The pre-inoculation device in front of the furnace according to claim 5, characterized in that, A guiding ring is arranged on the discharge pipe, and the guiding ring cooperates with the heat insulation plate. An anti-overflow ring that is in contact with the cover is fixedly connected to the top of the storage cylinder.

7. The pre-inoculation device in front of the furnace according to claim 6, characterized in that, The cover, the storage cylinder and the heat insulation plate are all hollowly arranged. A feeding pipe is fixedly connected to one side of the first raw material box, and a control mechanism is arranged inside the power box.

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