Anti-splashing auxiliary material adding guide device for vacuum melting furnace

Abstract

The utility model provides an anti-splashing auxiliary material adding guide device for a vacuum melting furnace, which belongs to the technical field of vacuum melting furnaces and comprises an auxiliary material storage bin fixed in an inner cavity of a furnace body, a blanking port extending to a hearth is arranged at the bottom of the auxiliary material storage bin, an inner cavity of the blanking port is provided with an auxiliary material adding channel extending to a position above a crucible, and the auxiliary material adding channel is communicated with the auxiliary material storage bin. The auxiliary material adding channel is arranged on the inner wall of the discharging opening in a sliding mode through a follow-up sealing assembly, the outer wall of the discharging end of the auxiliary material adding channel is connected with a splash-proof top block used for covering the top of the crucible in a sleeved mode, and the auxiliary material adding channel is a pipe-shaped piece. In the process, the multi-stage telescopic cover gradually covers the top of the crucible opening along with the splash-proof top baffle, it is guaranteed that the top of the crucible can be completely covered in the whole process, and splashing in the auxiliary material feeding process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum melting furnace technical field, concretely is a kind of anti-splashing auxiliary material adding guiding device for vacuum melting furnace. BACKGROUND

[0002] The core role of auxiliary material added in vacuum melting furnace is to solve the problem that vacuum melting cannot overcome, and ultimately achieve the three goals of improving metal purity, performance customization and stable smelting process, which is one of the most core roles of auxiliary material. Through chemical reaction or physical action, remove the gas and non-metallic inclusions in the metal that affect performance. By adding specific alloying auxiliary material, the metal composition is accurately adjusted to obtain the target performance (such as high strength, corrosion resistance and high temperature resistance).

[0003] The related technology (announcement number: CN215638741U) discloses an auxiliary material feeding device for vacuum melting furnace. The disclosed technical solution is as follows: after the rotating plate is stably connected by the adapter, the clockwork spring is contracted. The controller starts the first motor clockwise. The first motor drives the winding rod to rotate, so that the external pull rope stably releases the rotating cylinder to immerse the auxiliary material into the cleaning tank. The guide block guides the insertion of the rotating cylinder until the limiting block reliably inserts into the rotating cylinder to limit it. The controller closes the first motor and starts the third motor to reliably rotate the rotating cylinder in forward and reverse directions. The rotating cylinder drives the auxiliary material to rotate back and forth in the clean water, and the cleaning brush on the inner side of the rotating cylinder cleans the surface and removes impurities.

[0004] In the above disclosed technical solution, it is found that the related technology has the following problems: since the addition process of auxiliary material is according to a specific ratio, which meets the alloy strength, when the auxiliary material falls into the metal melt in the crucible during the addition of auxiliary material, the temperature of the melt is high, which will cause the ratio to be unbalanced during the splashing of the auxiliary material melting, thereby causing the strength of the alloy material to not meet the requirements. To solve this problem, we propose an anti-splashing auxiliary material adding guiding device for vacuum melting furnace.

[0005] It should be noted that the information disclosed in the above background section is only used to enhance the understanding of the background section of the present application, and therefore can include information that does not constitute prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology. In order to solve the problem of auxiliary material addition in the above prior art, the utility model provides an anti-splashing auxiliary material adding guiding device for vacuum melting furnace, which adopts a movable auxiliary material adding structure combined with an extension anti-splashing structure following the addition channel to avoid the splashing of metal liquid after the auxiliary material falls in. The specific technical solution is as follows:

[0007] The utility model provides an anti -spatter auxiliary material adding guide device for vacuum melting furnace, including fixed in the auxiliary material storage bin of furnace cavity, the bottom of auxiliary material storage bin is equipped with the blanking hole extending to hearth, and the inner chamber of blanking hole is equipped with the auxiliary material adding channel extending to the upper portion of crucible, and the inner wall of blanking hole is slidably arranged with auxiliary material adding channel through follow -up sealing assembly, the outer wall of auxiliary material adding channel discharge end is sleeved with the anti -spatter top of being used for covering the top of crucible, and the anti -spatter top is connected with the inner wall of hearth through the multistage telescopic cover of gradually covering the mouth of crucible.

[0008] In the above technical solution, the multistate telescopic cover includes a bottom support fixed to the inner wall of the hearth, the inner wall of the bottom support slidably has a primary extension block, the inner wall of the primary extension block slidably has a secondary extension block, and the anti-splashing top block is slidably arranged on the inner wall of the secondary extension block, the bottom support is provided with a retraction and expansion drive member for driving the anti-splashing top block, the secondary extension block and the primary extension block to expand and contract layer by layer.

[0009] The retraction and expansion drive member includes a cylinder fixed to the inner wall of the bottom support, the movable end of the cylinder is rotatably provided with a main guide wheel, the inner wall of the primary extension block is rotatably provided with a secondary guide wheel, one end of a main traction rope is fixed to the inner wall of the bottom support, the other end of the main traction rope is sequentially wound around the main guide wheel and the secondary guide wheel and then fixed to the inner wall of the bottom support, the inner wall of the secondary extension block is fixed with a driven seat located between the main guide wheel and the secondary guide wheel, and the driven seat is sleeved on the outer wall of the main traction rope.

[0010] One end of an auxiliary traction rope is fixed to the inner wall of the primary extension block away from the secondary guide wheel, a secondary guide wheel is rotatably provided on the side of the secondary extension block away from the driven seat, and the other end of the auxiliary traction rope is fixed to the outer wall of the anti-splashing top block after being wound around the secondary guide wheel.

[0011] A layer-by-layer sealing member is provided between the multistate telescopic cover and the top of the crucible.

[0012] The layer-by-layer sealing member includes a stepped side block fixed to the top of the crucible in sequence, and the stepped side block is coupled with the anti-splashing top block, the secondary extension block and the primary extension block in sequence.

[0013] The bottom of the bottom support is fixed with a guide groove extending to the mold, and the guide groove is fixed between the mold and the bottom support.

[0014] The follow-up sealing assembly includes a driving sealing plate slidingly attached to the bottom of the blanking hole, and the driving sealing plate is sleeved on the outer wall of the auxiliary material adding channel feed end, the two sides of the driving sealing plate are fixedly connected with driven sealing plates slidingly arranged on the inner wall of the blanking hole, and the driven sealing plates extend to the inner chamber of the furnace body through the auxiliary material storage bin.

[0015] The top of the active sealing plate is fixed with a butt joint plate fixed with the driven sealing plate, and the butt joint plate is sleeved on the outer wall of the feed end of the auxiliary material adding channel.

[0016] The sidewall of the active sealing plate is fixed with a guide column embedded in the inner wall of the blanking opening, and the guide column is located below the driven sealing plate.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] I. The combination structure of the splash-proof top block and the multi-stage telescopic cover completely covers the crucible opening during the whole process of adding auxiliary materials, blocks the path of auxiliary material or metal liquid splash from the physical level, and gradually covers the crucible opening even in the dynamic feeding process, so that the splash gap existing in the traditional fixed channel is avoided.

[0019] II. The follow-up sealing assembly completely aligns the blanking opening with the auxiliary material adding channel through the active sealing plate and the driven sealing plate, so that the auxiliary material can only fall into the crucible through the channel, and waste caused by scattering of the auxiliary material in the furnace is avoided.

[0020] III. After the auxiliary material adding is completed, the multi-stage telescopic cover can be moved to the side with the channel as a whole, so that enough space is left for the crucible to be turned over, and the liquid pouring process can be carried out without disassembling the device.

[0021] IV. The stepped side block is coupled with the telescopic cover of each stage, which further enhances the sealing effect and prevents small auxiliary material particles from overflowing from the gap. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of a splash-proof auxiliary material adding guide device for a vacuum melting furnace.

[0023] Figure 2 It is a schematic view of the internal structure of the furnace.

[0024] Figure 3 It is a structure schematic view of the crucible, mold and multi-stage telescopic cover part of the utility model.

[0025] Figure 4 It is a structure schematic view of the multi-stage telescopic cover when it is unfolded.

[0026] Figure 5 It is a top view structure schematic view of the auxiliary material storage bin of the utility model.

[0027] Figure 6 It is a bottom view structure schematic view of the auxiliary material storage bin of the utility model.

[0028] Among them, Figures 1 to 6The correspondence between the reference signs in the drawings and the component names is as follows: 1, auxiliary material storage bin; 2, blanking port; 3, auxiliary material adding channel; 4, follow-up sealing assembly; 41, driving sealing plate; 411, guide column; 42, driven sealing plate; 43, butt joint plate; 5, splash-proof top stop; 6, multi-stage telescopic cover; 7, bottom support; 8, primary extension stop; 9, secondary extension stop; 10, air cylinder; 11, main guide wheel; 12, auxiliary guide wheel; 13, main traction rope; 14, driven seat; 15, auxiliary traction rope; 16, secondary guide wheel; 17, side stop; 18, guide groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. Figure 1 -Appendix Figure 6 The utility model will be further described, but the utility model is not limited to these embodiments.

[0031] A kind of anti-splashing auxiliary material adding guide device for vacuum smelting furnace, including fixed in the auxiliary material storage bin 1 of furnace cavity, the top of furnace body is embedded with the feed inlet extending to auxiliary material storage bin 1, electromagnetic valve is set on feed inlet.The bottom of auxiliary material storage bin 1 is provided with blanking port 2 extending to hearth, and the inner cavity of blanking port 2 is provided with auxiliary material adding channel 3 extending to the upper portion of crucible, and auxiliary material adding channel 3 is slidably arranged on the inner wall of blanking port 2 by follow-up sealing assembly 4.

[0032] The bottom of auxiliary material storage bin 1 is fixed with the partition embedded in the inside of furnace body, blanking port 2 successively penetrates the bottom of auxiliary material storage bin 1 and partition, so that auxiliary material enters hearth through blanking port 2 and falls into the inside of crucible of hot melt material, auxiliary material adding channel 3 moves with splash-proof top stop 5, in this process, follow-up sealing assembly 4 is used to ensure that material cannot fall into the inside of hearth from other positions of blanking port 2, so that auxiliary material can only fall into crucible from auxiliary material adding channel 3.

[0033] The outer wall of the discharge end of auxiliary material adding channel 3 is sleeved with splash-proof top stop 5 for covering the top of crucible, and splash-proof top stop 5 is connected with the inner wall of hearth by multi-stage telescopic cover 6 gradually covering the mouth of crucible.Auxiliary material adding channel 3 is a tubular piece, and electromagnetic valve is arranged on auxiliary material adding channel 3.

[0034] Since the auxiliary material adding channel 3 is in a state of moving during the adding process, the splash-proof top stop 5 also moves with the auxiliary material adding channel 3. During the process, the multi-stage telescopic cover 6 gradually covers the top of the crucible mouth with the splash-proof top stop 5, ensuring that the top of the crucible is completely covered during the whole process, and avoiding splashing during the auxiliary material adding process.

[0035] After the auxiliary material is added, the auxiliary material adding channel 3 needs to be moved aside to leave enough space for the crucible to be turned over. During this process, the multi-stage telescopic cover 6 moves the splash-proof top stop 5 and the auxiliary material adding channel 3 to the side of the crucible, and then the crucible is turned over. The side of the feeding port at the top of the crucible is provided with a liquid pouring nozzle, so that the metal melt falls into the mold below from the liquid pouring nozzle.

[0036] The multi-stage telescopic cover 6 includes a bottom supporting seat 7 fixed on the inner wall of the furnace chamber. The inner wall of the bottom supporting seat 7 is slidably provided with a primary extension stop 8. The bottom supporting seat 7 is in the shape of a drawer. The splash-proof top stop 5, the secondary extension stop 9 and the primary extension stop 8 are all in the shape of a U. Sliding grooves are formed in the inner walls of the bottom supporting seat 7, the secondary extension stop 9 and the primary extension stop 8. Sliding blocks that slidably cooperate with the sliding grooves are fixedly installed on the outer walls of the splash-proof top stop 5, the secondary extension stop 9 and the primary extension stop 8. The inner wall of the primary extension stop 8 is slidably provided with the secondary extension stop 9, and the splash-proof top stop 5 is slidably arranged in the inner wall of the secondary extension stop 9. The bottom supporting seat 7 is provided with a folding and unfolding driving member for driving the splash-proof top stop 5, the secondary extension stop 9 and the primary extension stop 8 to fold and unfold layer by layer.

[0037] The folding and unfolding driving member makes the splash-proof top stop 5, the secondary extension stop 9 and the primary extension stop 8 slide to the crucible in turn. As the splash-proof top stop 5 drives the auxiliary material adding channel 3 to move gradually in the rectangular feeding slot above the crucible, the splash-proof top stop 5, the secondary extension stop 9 and the primary extension stop 8 gradually cover the rectangular feeding slot above the crucible, avoiding splashing of the auxiliary material.

[0038] It is worth noting that the folding and unfolding driving member includes a gas cylinder 10 fixed on the inner wall of the bottom supporting seat 7. The movable end of the gas cylinder 10 is rotatably provided with a main guide wheel 11. The movable end of the gas cylinder 10 is fixedly installed on a support. The main guide wheel 11 rotates on the support through a rotating shaft. When the splash-proof top stop 5, the secondary extension stop 9 and the primary extension stop 8 are folded, the gas cylinder 10 is located above the splash-proof top stop 5.

[0039] The inner wall of the primary extension block 8 is rotatably provided with a secondary guide wheel 12, and one end of a main traction rope 13 is fixed to the inner wall of the supporting base 7. The other end of the main traction rope 13 is sequentially wound around the primary guide wheel 11 and the secondary guide wheel 12 and then fixed to the inner wall of the supporting base 7. The main traction rope 13 is continuously bent and wound around the outer walls of the primary guide wheel 11 and the secondary guide wheel 12. One end of the main traction rope 13 is fixed to one side of the air cylinder 10, and the other end of the main traction rope 13 is fixed to the side wall of the notch of the supporting base 7. The inner wall of the secondary extension block 9 is fixed with a driven seat 14 located between the primary guide wheel 11 and the secondary guide wheel 12, and the driven seat 14 is sleeved on the outer wall of the main traction rope 13. The driven seat 14 moves with the main traction rope 13.

[0040] One end of an auxiliary traction rope 15 is fixed to the inner wall of the side of the primary extension block 8 away from the secondary guide wheel 12. The secondary extension block 9 is rotatably provided with a secondary guide wheel 16 on the side away from the driven seat 14. The other end of the auxiliary traction rope 15 is fixed to the outer wall of the splash-proof top block 5 after being wound around the secondary guide wheel 16.

[0041] When the telescopic end of the air cylinder 10 moves, the primary guide wheel 11 is driven to move, so that the primary guide wheel 11 drives the main traction rope 13 wound around the outer wall to expand, so that the main traction rope 13 drives the primary extension block 8 to move through the secondary guide wheel 12. At the same time, the secondary extension block 9 moves with the main traction rope 13 through the driven seat 14. The other side of the secondary extension block 9 drives the secondary guide wheel 16 to move, so that the secondary guide wheel 16 drives the auxiliary traction rope 15 to expand, so that the splash-proof top block 5 and the primary extension block 8 move at the same time, and finally the splash-proof top block 5 drives the auxiliary material adding channel 3 to move above the crucible.

[0042] In addition, a layer-by-layer sealing member is arranged between the multi-stage telescopic cover 6 and the top of the crucible. The layer-by-layer sealing member ensures the sealing between the multi-stage telescopic cover 6 and the material port above the crucible.

[0043] In addition, the layer-by-layer sealing member includes stepped side blocks 17 fixed to the top of the crucible in sequence, and the stepped side blocks 17 are sequentially coupled with the splash-proof top block 5, the secondary extension block 9 and the primary extension block 8. When the splash-proof top block 5 and the primary extension block 8 and the secondary extension block 9 expand, they are sequentially attached to the top of the three-layer stepped side blocks 17 and slide, increasing the sealing between the multi-stage telescopic cover 6 and the crucible.

[0044] Further, the bottom of the supporting base 7 is inclinedly fixed with a guide groove 18 extending to the mold. The guide groove 18 is inclinedly fixed between the mold and the supporting base 7. The bottom of the splash-proof top block 5 slides on the inner wall of the primary extension block 8, the bottom of the primary extension block 8 slides on the inner wall of the secondary extension block 9, the bottom of the secondary extension block 9 slides on the inner wall of the supporting base 7, and the width of the guide groove 18 is greater than the overall width of the multi-stage telescopic cover 6, so that the metal solution falling into the guide groove 18 slides into the mold.

[0045] The follow-up sealing assembly 4 comprises a driving sealing plate 41 which is attached to the bottom of the material falling port 2 and is sleeved on the outer wall of the feeding end of the auxiliary material adding channel 3. The driven sealing plate 42 on one side extends out of the auxiliary material storage bin 1, and the driven sealing plate 42 on the other side is located in the through hole and has a sufficient movement distance. The driven sealing plate 42 moves with the driving sealing plate 41 to open the material falling port 2.

[0046] The driving sealing plate 41 is fixedly connected with the driven sealing plate 42 which is slidably arranged on the inner wall of the material falling port 2, and the driven sealing plate 42 extends to the inner cavity of the furnace body through the auxiliary material storage bin 1. The width of the driving sealing plate 41 is greater than the width of the material falling port 2, so that the driving sealing plate 41 is attached to the bottom of the layer where the material falling port 2 is located and slides. The driving sealing plate 41 is fixedly sleeved on the outer wall of the upper end of the auxiliary material adding channel 3, so that the driving sealing plate 41 drives the auxiliary material adding channel 3 to move. The driven sealing plates 42 on both sides move with the driving sealing plate 41, so as to ensure that the auxiliary material can only be discharged from the auxiliary material adding channel 3 on the driving sealing plate 41 during the process of adding auxiliary material.

[0047] The top of the driving sealing plate 41 is fixedly connected with the butt plate 43 which is fixedly connected with the driven sealing plate 42, and the butt plate 43 is sleeved on the outer wall of the feeding end of the auxiliary material adding channel 3. The butt plate 43 fills the space above the material falling port 2.

[0048] The side wall of the driving sealing plate 41 is fixedly connected with the guide column 411 which is embedded in the inner wall of the material falling port 2, and the guide column 411 is located below the driven sealing plate 42. The movable holes are formed in the inner wall of the material falling port 2 on both sides, and the guide columns 411 on both sides are respectively slid into the inner parts of the two movable holes, so as to ensure the stability of the movement of the driven sealing plate 42.

[0049] The working principle of the anti-splashing auxiliary material adding guide device for the vacuum melting furnace is as follows: first, open the electromagnetic valve of the feeding port at the top of the furnace body, put the auxiliary material into the inside of the auxiliary material storage bin 1, then close the electromagnetic valve, and then discharge the air in the furnace through the vacuum pump on the vacuum melting furnace.

[0050] Then the auxiliary material adding channel 3 on the electromagnetic valve is opened, and the electromagnetic valve of the gas cylinder 10 inside the connected gas guide pipe is opened, and the primary guide wheel 11 is moved when the telescopic end of the gas cylinder 10 moves, so that the primary guide wheel 11 drives the main traction rope 13 wound on the outer wall to expand. The primary extension stop 8 is moved by the secondary extension stop 9 through the driven seat 14 with the main traction rope 13, and the secondary extension stop 9 on the other side drives the secondary guide wheel 16 to move. The secondary guide wheel 16 pushes the auxiliary traction rope 15 to expand, so that the splash-proof top stop 5 and the primary extension stop 8 move at the same time, and finally the splash-proof top stop 5 drives the auxiliary material adding channel 3 to move above the crucible, and in the process of adding auxiliary materials, layer by layer shielding on the top of the crucible;

[0051] Finally, the splash-proof top stop 5, the primary extension stop 8 and the secondary extension stop 9 are sequentially withdrawn into the bottom support 7 by the gas cylinder 10, leaving a turning space for the crucible, and then the crucible is turned over. The side of the feed inlet at the top of the crucible is provided with a liquid pouring nozzle, so that the metal melt falls into the mold below from the liquid pouring nozzle.

[0052] In the description of the present application, it should be understood that the terms "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "both ends" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0053] In the present application, unless otherwise specified and limited, the terms "mounting", "setting", "connecting", "fixing", "threading" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements, unless otherwise specified, the above-mentioned terms in the present application can be understood according to the specific meaning of the above-mentioned terms in the present application according to the specific situation.

[0054] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A splash-proof auxiliary material adding guide device for a vacuum melting furnace, characterized in that, The utility model provides an auxiliary material storage bin (1) fixed in the inner chamber of furnace body, the bottom of auxiliary material storage bin (1) is equipped with the blanking hole (2) extending to hearth, and the inner chamber of blanking hole (2) is equipped with the auxiliary material adding channel (3) extending to the upper of crucible, and auxiliary material adding channel (3) is slidably arranged in the inner wall of blanking hole (2) through follow-up sealing assembly (4), the outer wall of auxiliary material adding channel (3) discharge end is sleeved with the anti - splash top block (5) for covering the top of crucible, and the anti - splash top block (5) is connected between the inner wall of hearth through the multistage telescopic cover (6) of gradually covering the mouth of crucible.

2. The anti-splashing auxiliary material adding and guiding device for a vacuum melting furnace according to claim 1, characterized in that: The multistate telescopic cover (6) includes a bottom support (7) fixed to the inner wall of the hearth, the inner wall of the bottom support (7) slidably has a primary extension block (8), the inner wall of the primary extension block (8) slidably has a secondary extension block (9), and the anti-splash top block (5) is slidably arranged in the inner wall of the secondary extension block (9), the bottom support (7) is provided with a retraction and expansion drive member for driving the anti-splash top block (5), the secondary extension block (9) and the primary extension block (8) to expand and retract layer by layer.

3. The anti-splashing auxiliary material adding guide device for a vacuum melting furnace according to claim 2, characterized in that: The retraction and expansion drive member includes a gas cylinder (10) fixed to the inner wall of the bottom support (7), the movable end of the gas cylinder (10) is rotatably provided with a main guide wheel (11), the inner wall of the primary extension block (8) is rotatably provided with a secondary guide wheel (12), one end of a main traction rope (13) is fixed to the inner wall of the bottom support (7), the other end of the main traction rope (13) is sequentially wound around the main guide wheel (11) and the secondary guide wheel (12) and then fixed to the inner wall of the bottom support (7), the inner wall of the secondary extension block (9) is fixed with a driven seat (14) located between the main guide wheel (11) and the secondary guide wheel (12), and the driven seat (14) is sleeved on the outer wall of the main traction rope (13); One end of an auxiliary traction rope (15) is fixed to the inner wall of the primary extension block (8) away from the secondary guide wheel (12), the secondary extension block (9) away from the driven seat (14) is rotatably provided with a secondary guide wheel (16), and the other end of the auxiliary traction rope (15) is fixed to the outer wall of the anti-splash top block (5) after winding around the secondary guide wheel (16).

4. The anti-splashing auxiliary material adding guide device for a vacuum melting furnace according to claim 2, characterized in that: A layer-by-layer sealing member is provided between the multistate telescopic cover (6) and the top of the crucible.

5. The anti-splashing auxiliary material adding guide device for a vacuum melting furnace according to claim 4, characterized in that: The layer-by-layer sealing member includes a stepped side block (17) fixed to the top of the crucible in sequence, and the stepped side block (17) is sequentially coupled with the anti-splash top block (5), the secondary extension block (9) and the primary extension block (8).

6. The anti-splashing auxiliary material adding guide device for a vacuum melting furnace according to claim 2, characterized in that: The bottom of the bottom support (7) is fixed with a guide groove (18) extending to the mold.

7. The anti-splashing auxiliary material adding and guiding device for a vacuum melting furnace according to claim 1, characterized in that: The follow-up sealing assembly (4) includes a driven sealing plate (42) slidably arranged on the inner wall of the blanking hole (2) and fixed to the both sides of the active sealing plate (41) slidably fitted on the outer wall of the feeding end of the auxiliary material adding channel (3), and the driven sealing plate (42) penetrates the auxiliary material storage bin (1) and extends to the inner chamber of the furnace body.

8. The anti-splashing auxiliary material adding guide device for a vacuum melting furnace according to claim 7, characterized in that: The top of the active sealing plate (41) is fixed with a butt joint plate (43) which is fixed with the driven sealing plate (42), and the butt joint plate (43) is sleeved on the outer wall of the feeding end of the auxiliary material adding channel (3).

9. The anti-splashing auxiliary material adding guide device for a vacuum melting furnace according to claim 7, characterized in that: The sidewall of the active sealing plate (41) is fixed with a guide column (411) which is embedded in the inner wall of the blanking opening (2), and the guide column (411) is located below the driven sealing plate (42).

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