Fine filtration device for liquid separation and residue filtration of smelting furnace

Abstract

The refined filtration device comprises a fixed bottom plate, a refining furnace body, a heat preservation cover, a mounting bottom plate, a mounting sleeve and a refined filtration cylinder, the refining furnace body is fixedly mounted on the top surface of the fixed bottom plate, a circular sliding rail is fixedly mounted on the inner wall of the heat preservation cover, and a circular sliding ring is fixedly mounted on the side wall of the refined filtration cylinder; and a fixing frame is fixedly installed in the center of the top face of the heat preservation cover, a first servo motor is installed on the fixing frame, the output end of the first servo motor is connected with a first rotating shaft, and high-temperature-resistant stirring scraping plates are symmetrically and fixedly installed on the portion, located in an inner cavity of the fine filtering cylinder, of the first rotating shaft. The fixed bottom plate, the refining furnace body, the heat preservation cover, the mounting bottom plate, the mounting sleeve and the refined filtration cylinder are arranged, a refining agent and molten metal can be fully mixed and make contact, the slag and gas removal effect and efficiency of the molten metal are improved, rapid filter residue separation of the purified molten metal is achieved, the liquid separation refined filtration efficiency is higher, and practicability is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of metal refining, and particularly relates to a fine filtering device for separating liquid and filtering slag in a smelting furnace. Background Art

[0002] A smelting furnace refers to a device that melts metal ingots and some waste metals and adds necessary alloy components, and melts them into the required alloy through operations such as slag skimming and refining. For example, after molten aluminum is melted into aluminum liquid by a smelting furnace, some solid non-metallic inclusions will be entrapped in the melt to varying degrees and some gases will be adsorbed. To ensure the quality of the produced products, it is necessary to finely filter and degas the molten aluminum during smelting. Therefore, a fine filtering device for separating liquid and filtering slag in a smelting furnace is required.

[0003] When the traditional slag filtering device of a smelting furnace is in use, inert gas is blown into the melt, and a refining agent is introduced at the same time to remove the solid non-metallic impurities and the contained oxidation gases in the melt. Finally, liquid separation and filtration are carried out to obtain a purified molten melt, ensuring the purity of the molten metal and improving the processing quality of subsequent products. However, it is difficult to ensure sufficient contact between the inert gas, the refining agent and the melt when the inert gas is blown into the molten melt, and it is relatively difficult to separate the generated aluminum slag from the refined melt, and the separation and filtration efficiency is low. In view of the shortcomings of the existing technology, those skilled in the art have proposed a fine filtering device for separating liquid and filtering slag in a smelting furnace. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, and a fine filtering device for separating liquid and filtering slag in a smelting furnace is proposed.

[0005] To achieve the above purpose, the present invention adopts the following technical scheme: A fine filtering device for separating liquid and filtering slag in a smelting furnace, including a fixed bottom plate, a refining furnace body, a heat preservation cover, an installation bottom plate, an installation sleeve and a fine filtering cylinder. The refining furnace body is fixedly installed on the top surface of the fixed bottom plate. A circular slide rail is fixedly installed on the inner wall of the heat preservation cover. A circular slide ring is fixedly installed on the side wall of the fine filtering cylinder, and the circular slide ring is clamped in the circular slide rail. A fixed frame is fixedly installed at the center of the top surface of the heat preservation cover, and a first servo motor is installed on the fixed frame. The output end of the first servo motor is connected with a first rotating shaft, and high-temperature stirring scraping plates are symmetrically and fixedly installed on the part of the first rotating shaft located in the inner cavity of the fine filtering cylinder. A plurality of fine filtering holes are evenly formed in the side wall of the fine filtering cylinder. The top surface of the installation bottom plate is closely attached to the bottom of the fine filtering cylinder. The installation sleeve can be sleeved on the outer side wall of the bottom of the fine filtering cylinder, and fixing parts are fixedly installed on the side wall of the fine filtering cylinder and the side wall of the installation sleeve. A second rotating shaft is installed on the heat preservation cover, and a gear is fixedly installed on the second rotating shaft. A toothed ring is fixedly installed on the side wall of the fine filtering cylinder, and the toothed ring meshes with the gear. A first belt pulley is fixedly installed on the first rotating shaft, a second belt pulley is fixedly installed on the second rotating shaft, and a transmission belt is sleeved between the first belt pulley and the second belt pulley.

[0006] As a further description of the above technical solution:

[0007] On one side of the top surface of the heat preservation cover, a liquid inlet flow channel groove is fixedly installed. On the outer wall of the heat preservation cover, a nitrogen generator is fixedly installed. One end of an air delivery pipe is connected to the output end of the nitrogen generator in a communicating manner. The other end of the air delivery pipe is connected to the inner cavity of an air equalizing box in a communicating manner. A booster pump is installed on the air delivery pipe. One ends of a plurality of air blowing pipes are connected to one side of the inner cavity of the air equalizing box in a communicating manner, and the other ends of the air blowing pipes are connected to the inner cavity of the liquid inlet flow channel groove in a communicating manner. A refining agent inlet pipe is installed on the top surface of the heat preservation cover in a communicating manner.

[0008] As a further description of the above technical solution:

[0009] In the center of the top surface of the installation base plate, a protection sleeve is fixedly installed. In the center of the top surface of the protection sleeve, a sliding sleeve is fixedly installed, and a first rotating shaft is sleeved in the sliding sleeve.

[0010] As a further description of the above technical solution:

[0011] On one side of the top surface of the fixed base plate, a vertical plate frame is fixedly installed. A lifting sliding groove is formed in the side wall of the vertical plate frame. On one side wall of the heat preservation cover, a lifting sliding block is fixedly installed, and the lifting sliding block is clamped in the lifting sliding groove. A ball screw is installed in the lifting sliding groove, and the top end of the ball screw is connected to the output end of a second servo motor. A lead screw sleeve is fixedly installed in the lifting sliding block, and the lead screw sleeve is matched with the ball screw.

[0012] As a further description of the above technical solution:

[0013] On the side wall of the vertical plate frame, a control panel is fixedly installed, and the control panel is electrically connected to the refining furnace body, the first servo motor, the second servo motor, the nitrogen generator and the booster pump.

[0014] As a further description of the above technical solution:

[0015] A sealing ring is fixedly installed at the bottom of the heat preservation cover. A sealing groove is formed at the top of the refining furnace body, and the sealing ring is clamped in the sealing groove.

[0016] As a further description of the above technical solution:

[0017] On one side of the bottom of the inner cavity of the refining furnace body, a liquid discharge pipe is installed in a communicating manner.

[0018] As a further description of the above technical solution:

[0019] The central axes of the installation base plate, the protection sleeve, the sliding sleeve, the fine filter cylinder, the heat preservation cover and the refining furnace body are on the same straight line.

[0020] As a further description of the above technical solution:

[0021] The cross-sectional shapes of the lifting sliding groove and the lifting sliding block are T-shaped.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows;

[0023] 1. In the present invention, there are a fixed bottom plate, a refining furnace body, a heat preservation cover, an installation bottom plate, an installation sleeve and a fine filter cylinder. The top surface of the set fixed bottom plate is fixedly installed with the refining furnace body. The inner wall of the set heat preservation cover is fixedly installed with a circular slide rail. The side wall of the set fine filter cylinder is fixedly installed with a circular sliding ring, and the circular sliding ring is clamped in the circular slide rail. The center of the top surface of the set heat preservation cover is fixedly installed with a fixing frame, and a first servo motor is installed on the fixing frame. The output end of the first servo motor is connected and installed with a first rotating shaft. On the part of the first rotating shaft located in the inner cavity of the fine filter cylinder, high-temperature resistant stirring scrapers are symmetrically fixedly installed. The center of the top surface of the set installation bottom plate is fixedly installed with a protective sleeve, and the center of the top surface of the protective sleeve is fixedly installed with a sliding sleeve, and the first rotating shaft is sleeved in the sliding sleeve. The installation sleeve can be sleeved on the bottom side wall of the fine filter cylinder, and fixing parts are fixedly installed on the side wall of the fine filter cylinder and the side wall of the installation sleeve. During use, the sealing ring fixedly installed at the bottom of the protective cover is clamped in the sealing groove opened at the top of the refining furnace body. Then, the molten metal liquid melted by the melting furnace is introduced into the inner cavity of the fine filter cylinder through the liquid inlet flow channel groove. The set refining furnace body can heat the introduced molten metal liquid to prevent the metal liquid from cooling and solidifying too quickly. On the other hand, a nitrogen generator is fixedly installed on the outer wall of the set heat preservation cover. One end of an air delivery pipe is connected and communicated with the output end of the nitrogen generator, and the other end of the air delivery pipe is connected and communicated with the inner cavity of a gas distribution box. A booster pump is installed on the air delivery pipe. One end of a number of air blowing pipes is connected and communicated with one side of the inner cavity of the gas distribution box, and the other end of the air blowing pipe is connected and communicated with the inner cavity of the liquid inlet flow channel groove. Therefore, when the metal liquid passes through the inner cavity of the liquid inlet flow channel groove, the nitrogen generator and the booster pump work to uniformly blow the inert gas nitrogen into the metal liquid passing through the liquid inlet flow channel groove through the air delivery pipe and the air blowing pipe, so that the inert gas uniformly enters the interior of the metal liquid introduced into the inner cavity of the fine filter cylinder. At the same time, the refining agent is introduced into the inner cavity of the fine filter cylinder through the refining agent introduction pipe to be mixed with the metal liquid. At this time, the worker can start the first servo motor through the control panel to drive the first rotating shaft to rotate at a low speed. Then, the first rotating shaft can drive the high-temperature resistant stirring scrapers to rotate at a low speed, so that the refining agent and the metal liquid are fully mixed and contacted, improving the slag removal and degassing effect and efficiency of the metal liquid. After the non-metallic solid impurities in the metal liquid float up, the first servo motor drives the first rotating shaft to increase the speed of rotation. On the other hand, a second rotating shaft is installed on the set heat preservation cover, and a gear is fixedly installed on the second rotating shaft. A toothed ring is fixedly installed on the side wall of the set fine filter cylinder, and the toothed ring meshes with the gear. A first pulley is fixedly installed on the first rotating shaft, and a second pulley is fixedly installed on the second rotating shaft. A transmission belt is sleeved between the first pulley and the second pulley. Therefore, when the first rotating shaft rotates, it can drive the fine filter cylinder to rotate in the opposite direction. At this time, the metal liquid in the inner cavity of the fine filter cylinder is thrown out under the action of the centrifugal force generated by the rotation. A number of fine filter holes are uniformly opened on the side wall of the set fine filter cylinder. At this time, the purified metal liquid after impurity removal can be separated and filtered through the fine filter holes and enter the inner cavity of the refining furnace body, and finally can be led out through the drain pipe for subsequent processing, while the solid filter residue impurities are separated and filtered and remain in the inner cavity of the fine filter cylinder.Thus, the rapid separation of slag from the purified molten metal is achieved, with higher liquid separation and fine filtration efficiency and stronger practicability.

[0024] 2. In the present invention, a vertical plate frame and a lifting slider are provided. On one side of the top surface of the fixed bottom plate, a vertical plate frame is fixedly installed, and a lifting chute is provided on the side wall of the vertical plate frame. On one side wall of the heat preservation cover, a lifting slider is fixedly installed, and the lifting slider is clamped in the lifting chute. A ball screw is installed in the lifting chute, and the top end of the ball screw is connected to the output end of the second servo motor. A lead screw sleeve is fixedly installed in the lifting slider, and the lead screw sleeve cooperates with the ball screw. Therefore, workers can start the second servo motor through the control panel to drive the ball screw to rotate, so that the lifting slider drives the heat preservation cover to lift along the direction of the lifting chute, thus eliminating the need for workers to manually open and close the heat preservation cover, making the device more convenient, time-saving and labor-saving, and also safer. When maintenance and repair of the inner cavity of the fine filtration furnace are required, the heat preservation cover can be simply lifted, which brings convenience to the subsequent maintenance and repair of the device and has stronger practicability.

[0025] 3. In the present invention, for the fine filtration cylinder, the installation bottom plate and the installation sleeve, as described above, the first rotating shaft is sleeved in the sliding sleeve, so the protective sleeve can prevent the molten metal from directly contacting the first rotating shaft, greatly reducing the damage of the first rotating shaft and extending its service life. At the same time, as described above, the separated slag remains in the inner cavity of the fine filtration cylinder. The high-temperature resistant stirring scraper can prevent the aluminum slag from adhering to the inner wall of the fine filtration cylinder or blocking the fine filtration holes during rotation. When there is a large amount of separated slag, workers can remove the installation sleeve and the installation bottom plate from the fine filtration cylinder by disassembling the fixing parts, so as to facilitate the centralized cleaning of the separated slag. The operation is simple, the use is safe, and the practicability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 is a schematic structural diagram of a fine filtration device for separating liquid and slag in a melting furnace proposed by the present invention;

[0028] Figure 2 is a top view of a fine filtration device for separating liquid and slag in a melting furnace proposed by the present invention;

[0029] Figure 3 proposed by the present invention Figure 1 is an enlarged view of part A;

[0030] Figure 4Proposed by the present invention Figure 1 Enlarged view of part B

[0031] Figure 5 Proposed by the present invention Figure 1 Enlarged view of part C

[0032] Figure 6 Proposed by the present invention Figure 1 Enlarged view of part D

[0033] Figure 7 Proposed by the present invention Figure 1 Enlarged view of part E

[0034] Figure 8 Stereogram of the mounting base plate of a fine filtering device for separating liquid and filtering slag in a smelting furnace proposed by the present invention

[0035] Figure 9 Stereogram of the first rotating shaft and the second rotating shaft of a fine filtering device for separating liquid and filtering slag in a smelting furnace proposed by the present invention

[0036] Marking description:

[0037] 1. Fixed base plate; 2. Liquid inlet flow channel groove; 3. Nitrogen generator; 4. Heat preservation cover; 5. Protection sleeve; 6. Fine filtering cylinder; 7. Refining furnace body; 8. Drain pipe; 9. First servo motor; 10. Second servo motor; 11. Vertical plate frame; 12. Ball screw; 13. Screw sleeve; 14. Lifting slider; 15. Lifting chute; 16. Control panel; 17. Air distribution box; 18. Blowing pipe; 19. Refining agent inlet pipe; 20. Fixed frame; 21. Second rotating shaft; 22. Second pulley; 23. Transmission belt; 24. Air delivery pipe; 25. Booster pump; 26. First rotating shaft; 27. First pulley; 28. High-temperature stirring scraping plate; 29. Gear; 30. Tooth ring; 31. Circular slide rail; 32. Circular sliding ring; 33. Fine filtering hole; 34. Sealing ring; 35. Sealing groove; 36. Mounting base plate; 37. Mounting sleeve; 38. Fixed part; 39. Sliding sleeve Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments

[0039] In the description of the invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances:

[0040] Embodiment 1, a fine filtration device for separating liquid and filtering slag in a smelting furnace, including a fixed bottom plate 1, a refining furnace body 7, a heat preservation cover 4, an installation bottom plate 36, an installation sleeve 37 and a fine filtration cylinder 6. The top surface of the fixed bottom plate 1 is fixedly installed with the refining furnace body 7. The inner wall of the heat preservation cover 4 is fixedly installed with a circular slide rail 31. The side wall of the fine filtration cylinder 6 is fixedly installed with a circular slide ring 32, and the circular slide ring 32 is clamped in the circular slide rail 31. The center of the top surface of the heat preservation cover 4 is fixedly installed with a fixed frame 20, and a first servo motor 9 is installed on the fixed frame 20. The output end of the first servo motor 9 is connected and installed with a first rotating shaft 26. On the part of the first rotating shaft 26 located in the inner cavity of the fine filtration cylinder 6, high-temperature stirring scraping plates 28 are symmetrically fixedly installed. A plurality of fine filtration holes 33 are evenly opened on the side wall of the fine filtration cylinder 6. The top surface of the installation bottom plate 36 is closely attached to the bottom of the fine filtration cylinder 6. The installation sleeve 37 can be sleeved on the outer side wall of the bottom of the fine filtration cylinder 6, and fixing parts 38 are fixedly installed on the side wall of the fine filtration cylinder 6 and the side wall of the installation sleeve 37. A second rotating shaft 21 is installed on the heat preservation cover 4, and a gear 29 is fixedly installed on the second rotating shaft 21. A toothed ring 30 is fixedly installed on the side wall of the fine filtration cylinder 6, and the toothed ring 30 meshes with the gear 29. A first pulley 27 is fixedly installed on the first rotating shaft 26, a second pulley 22 is fixedly installed on the second rotating shaft 21, and a transmission belt 23 is sleeved between the first pulley 27 and the second pulley 22, which makes the refining agent and the molten metal fully mixed and contacted, improves the slag removal and degassing effect and efficiency of the molten metal, and realizes the rapid separation and filtration of the purified molten metal, with higher liquid separation and fine filtration efficiency and stronger practicability.

[0041] Example 2: On one side of the top surface of the heat preservation cover 4, a liquid inlet flow channel groove 2 is fixedly installed. On the outer wall of the heat preservation cover 4, a nitrogen generator 3 is fixedly installed. One end of an air delivery pipe 24 is connected to the output end of the nitrogen generator 3 in a communicating manner, and the other end of the air delivery pipe 24 is connected to the inner cavity of a gas equalizing box 17 in a communicating manner. A booster pump 25 is installed on the air delivery pipe 24. One end of a plurality of air blowing pipes 18 is connected to one side of the inner cavity of the gas equalizing box 17 in a communicating manner, and the other end of the air blowing pipe 18 is connected to the inner cavity of the liquid inlet flow channel groove 2. A refining agent inlet pipe 19 is installed on the top surface of the heat preservation cover 4 in a communicating manner, which plays a role in mixing and contacting the inert gas and the refining agent with the molten metal.

[0042] Example 3: In the center of the top surface of the installation base plate 36, a protective sleeve 5 is fixedly installed. In the center of the top surface of the protective sleeve 5, a sliding sleeve 39 is fixedly installed. A first rotating shaft 26 is sleeved in the sliding sleeve 39, which plays a role in preventing the molten metal from directly contacting the first rotating shaft 26, greatly reducing the damage of the first rotating shaft 26 and prolonging its service life.

[0043] Example 4: On one side of the top surface of the fixed base plate 1, a vertical plate frame 11 is fixedly installed. A lifting sliding groove 15 is formed on the side wall of the vertical plate frame 11. On one side wall of the heat preservation cover 4, a lifting sliding block 14 is fixedly installed. The lifting sliding block 14 is clamped in the lifting sliding groove 15. A ball screw 12 is installed in the lifting sliding groove 15, and the top end of the ball screw 12 is connected to the output end of a second servo motor 10. A lead screw sleeve 13 is fixedly installed in the lifting sliding block 14, and the lead screw sleeve 13 cooperates with the ball screw 12, which plays a role in eliminating the need for workers to manually open and close the installation of the heat preservation cover 4, making the device more convenient, time-saving and labor-saving to use, and also safer. When it is necessary to maintain and repair the inner cavity of the fine filtering furnace body, only the heat preservation cover 4 needs to be lifted, which brings convenience to the subsequent maintenance and repair of the device and has stronger practicability.

[0044] Example 5: A control panel 16 is fixedly installed on the side wall of the vertical plate frame 11. The control panel 16 is electrically connected to the refining furnace body 7, the first servo motor 9, the second servo motor 10, the nitrogen generator 3 and the booster pump 25. The control of the control circuit by the control panel 16 is a common technology in the field and will not be elaborated here.

[0045] Example 6: A sealing ring 34 is fixedly installed at the bottom of the heat preservation cover 4. A sealing groove 35 is formed at the top of the refining furnace body 7. The sealing ring 34 is clamped in the sealing groove 35, which plays a role in improving the sealing and heat preservation effect when the heat preservation cover 4 is closed.

[0046] Example 7: On one side of the bottom of the inner cavity of the refining furnace body 7, a liquid discharge pipe 8 is installed in a communicating manner, which plays a role in enabling the purified molten metal to be discharged through the liquid discharge pipe 8 for subsequent processing.

[0047] Example 8: The central axes of the installation base plate 36, the protective sleeve 5, the sliding sleeve 39, the fine filtering cylinder 6, the heat preservation cover 4 and the refining furnace body 7 are on the same straight line.

[0048] Embodiment Nine, the cross-sectional shapes of the lifting chute 15 and the lifting slider 14 are T-shaped.

[0049] Working principle: In the present invention, there are a fixed bottom plate 1, a refining furnace body 7, a heat preservation cover 4, a mounting bottom plate 36, a mounting sleeve 37 and a fine filter cylinder 6. The top surface of the set fixed bottom plate 1 is fixedly installed with the refining furnace body 7. The inner wall of the set heat preservation cover 4 is fixedly installed with a circular slide rail 31. The side wall of the set fine filter cylinder 6 is fixedly installed with a circular sliding ring 32, and the circular sliding ring 32 is clamped in the circular slide rail 31. The center of the top surface of the set heat preservation cover 4 is fixedly installed with a fixed frame 20, and a first servo motor 9 is installed on the fixed frame 20. The output end of the first servo motor 9 is connected and installed with a first rotating shaft 26. The part of the first rotating shaft 26 located in the inner cavity of the fine filter cylinder 6 is symmetrically fixedly installed with high-temperature stirring scraping plates 28. The center of the top surface of the set mounting bottom plate 36 is fixedly installed with a protective sleeve 5, and the center of the top surface of the protective sleeve 5 is fixedly installed with a sliding sleeve 39, and the first rotating shaft 26 is sleeved in the sliding sleeve 39. The set mounting sleeve 37 can be sleeved on the bottom outer wall of the fine filter cylinder 6, and fixing members 38 are fixedly installed on the side wall of the fine filter cylinder 6 and the side wall of the mounting sleeve 37. During use, the sealing ring 34 fixedly installed at the bottom of the protective cover is clamped in the sealing groove 35 opened at the top of the refining furnace body 7, and then the molten metal liquid melted by the melting furnace is introduced into the inner cavity of the fine filter cylinder 6 through the liquid inlet flow channel groove 2. The set refining furnace body 7 can heat the introduced molten metal liquid to prevent the metal liquid from cooling and solidifying too quickly. On the other hand, a nitrogen generator 3 is fixedly installed on the outer wall of the set heat preservation cover 4, and one end of an air delivery pipe 24 is connected and communicated with the output end of the nitrogen generator 3, and the other end of the air delivery pipe 24 is connected and communicated with the inner cavity of a gas equalizing box 17. A booster pump 25 is installed on the air delivery pipe 24. One end of a plurality of air blowing pipes 18 is connected and communicated with one side of the inner cavity of the gas equalizing box 17, and the other end of the air blowing pipe 18 is connected and communicated with the inner cavity of the liquid inlet flow channel groove 2. Therefore, when the metal liquid passes through the inner cavity of the liquid inlet flow channel groove 2, the nitrogen generator 3 and the booster pump 25 work to uniformly blow the inert gas nitrogen into the metal liquid passing through the liquid inlet flow channel groove 2 through the air delivery pipe 24 and the air blowing pipes 18, so that the inert gas uniformly enters the interior of the metal liquid introduced into the inner cavity of the fine filter cylinder 6. At the same time, a refining agent is introduced into the inner cavity of the fine filter cylinder 6 through a refining agent introduction pipe 19 to be mixed with the metal liquid. At this time, the worker can start the first servo motor 9 through a control panel 16 to drive the first rotating shaft 26 to rotate at a low speed, then the first rotating shaft 26 can drive the high-temperature stirring scraping plates 28 to rotate at a low speed, so that the refining agent and the metal liquid are fully mixed and contacted, improving the slag removal and degassing effect and efficiency of the metal liquid. After the non-metallic solid impurities in the metal liquid float up, the first servo motor 9 drives the first rotating shaft 26 to increase the rotation speed. On the other hand, a second rotating shaft 21 is installed on the set heat preservation cover 4, and a gear 29 is fixedly installed on the second rotating shaft 21. A toothed ring 30 is fixedly installed on the side wall of the set fine filter cylinder 6, and the toothed ring 30 meshes with the gear 29. A first belt pulley 27 is fixedly installed on the first rotating shaft 26, and a second belt pulley 22 is fixedly installed on the second rotating shaft 21. A transmission belt 23 is sleeved between the first belt pulley 27 and the second belt pulley 22.Therefore, when the first rotating shaft 26 rotates, it can drive the fine filter cylinder 6 to rotate in the opposite direction. At this time, the molten metal in the inner cavity of the fine filter cylinder 6 is thrown out under the action of the centrifugal force generated by the rotation. A number of fine filter holes 33 are evenly arranged on the side wall of the fine filter cylinder 6. At this time, the purified molten metal after impurity removal can be separated and filtered through the fine filter holes 33 and enter the inner cavity of the refining furnace body 7, and finally can be led out through the drain pipe 8 for subsequent processing. The solid filter residue impurities are separated and filtered and remain in the inner cavity of the fine filter cylinder 6, thus realizing the rapid separation of filter residue from the purified molten metal, with higher liquid separation and fine filtering efficiency and stronger practicability. In addition, in the present invention, a vertical plate frame 11 and a lifting slider 14 are provided. A vertical plate frame 11 is fixedly installed on one side of the top surface of the fixed bottom plate 1, and a lifting chute 15 is provided on the side wall of the vertical plate frame 11. A lifting slider 14 is fixedly installed on one side wall of the heat preservation cover 4, and the lifting slider 14 is clamped in the lifting chute 15. A ball screw 12 is installed in the lifting chute 15, and the top end of the ball screw 12 is connected to the output end of the second servo motor 10. A lead screw sleeve 13 is fixedly installed in the lifting slider 14, and the lead screw sleeve 13 cooperates with the ball screw 12. Therefore, the worker can start the second servo motor 10 through the control panel 16 to drive the ball screw 12 to rotate, so that the lifting slider 14 drives the heat preservation cover 4 to lift along the direction of the lifting chute 15, thus eliminating the need for the worker to manually open and close the heat preservation cover 4, making the device more convenient, time-saving and labor-saving, and also safer. When maintenance and repair of the inner cavity of the fine filter furnace body are required, only the heat preservation cover 4 needs to be lifted, which brings convenience to the subsequent maintenance and repair of the device and has stronger practicability. At the same time, in the present invention, the fine filter cylinder 6, the mounting bottom plate 36 and the mounting sleeve 37 are as described above. The first rotating shaft 26 is sleeved in the sliding sleeve 39. Therefore, the protective sleeve 5 can prevent the molten metal from directly contacting the first rotating shaft 26, greatly reducing the damage to the first rotating shaft 26 and prolonging its service life. At the same time, as described above, the separated filter residue will remain in the inner cavity of the fine filter cylinder 6. The high-temperature resistant stirring scraper 28 can prevent the aluminum slag from adhering to the inner wall of the fine filter cylinder 6 or blocking the fine filter holes 33 when rotating. When there is more separated filter residue, the worker can remove the mounting sleeve 37 and the mounting bottom plate 36 from the fine filter cylinder 6 by removing the fixing parts 38, so as to facilitate the centralized cleaning of the separated filter residue. The operation is simple, the use is safe, and the practicability is stronger.

[0050] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A fine filtering device for separating and filtering slag in a smelting furnace, comprising a fixed bottom plate (1), a refining furnace body (7), a heat-insulating cover (4), a mounting bottom plate (36), a mounting sleeve (37) and a fine filtering cartridge (6), characterized in that: A refining furnace body (7) is fixedly mounted on the top surface of the fixed bottom plate (1), a circular slide rail (31) is fixedly mounted on the inner wall of the heat preservation cover (4), a circular slip ring (32) is fixedly mounted on the side wall of the fine filter cartridge (6), and the circular slip ring (32) is embedded in the circular slide rail (31), a fixed frame (20) is fixedly mounted at the center of the top surface of the heat preservation cover (4), a first servo motor (9) is mounted on the fixed frame (20), and a first rotating shaft (26) is connected to the output end of the first servo motor (9), the first rotating shaft (26) is symmetrically fixedly mounted on the inner cavity of the fine filter cartridge (6), a plurality of fine filter holes (33) are evenly opened on the side wall of the fine filter cartridge (6), and the mounting bottom plate (36) is fixedly mounted on the inner cavity of the fine filter cartridge (6). ) top surface is in close contact with the bottom of the fine filter cylinder (6), the installation sleeve (37) can be sleeved on the bottom of the outer wall of the fine filter cylinder (6), and a fixing piece (38) is fixedly installed on the side wall of the fine filter cylinder (6) and the side wall of the installation sleeve (37), a second rotating shaft (21) is installed on the thermal insulation cover (4), and a gear (29) is fixedly installed on the second rotating shaft (21), a gear ring (30) is fixedly installed on the side wall of the fine filter cylinder (6), and the gear ring (30) and the gear (29) are meshed with each other, a first pulley (27) is fixedly installed on the first rotating shaft (26), a second pulley (22) is fixedly installed on the second rotating shaft (21), and a transmission belt (23) is sleeved between the first pulley (27) and the second pulley (22).

2. A fine filtering device for smelting furnace liquid separation and slag filtering according to claim 1, characterized in that: A liquid inlet channel groove (2) is fixedly mounted on one side of the top surface of the heat-insulating cover (4), a nitrogen generator (3) is fixedly mounted on the outer wall of the heat-insulating cover (4), and the output end of the nitrogen generator (3) is connected to one end of an air delivery pipe (24), and the other end of the air delivery pipe (24) is connected to the inner cavity of an aeration box (17), a booster pump (25) is mounted on the air delivery pipe (24), one side of the inner cavity of the aeration box (17) is connected to one end of a plurality of air blowing pipes (18), and the other end of the air blowing pipes (18) is connected to the inner cavity of the liquid inlet channel groove (2), and a refining agent introduction pipe (19) is connected to the top surface of the heat-insulating cover (4).

3. A fine filtering device for smelting furnace liquid separation and slag filtering according to claim 1, characterized in that: A protective sleeve (5) is fixedly mounted at the center of the top surface of the mounting base plate (36), and a sliding sleeve (39) is fixedly mounted at the center of the top surface of the protective sleeve (5), and a first rotating shaft (26) is sleeved inside the sliding sleeve (39).

4. A fine filtering device for slag separation in a smelting furnace according to claim 1, characterized in that: A vertical plate frame (11) is fixedly mounted on one side of the top surface of the fixed bottom plate (1), and a lifting slot (15) is provided on the side wall of the vertical plate frame (11); a lifting slider (14) is fixedly mounted on the side wall of one side of the thermal insulation cover (4), and the lifting slider (14) is embedded in the lifting slot (15); a ball screw (12) is mounted in the lifting slot (15), and the top end of the ball screw (12) is connected to the output end of the second servo motor (10); a screw sleeve (13) is fixedly mounted in the lifting slider (14), and the screw sleeve (13) and the ball screw (12) cooperate with each other.

5. A fine filtering device for slag separation in a smelting furnace according to claim 4, characterized in that: A control panel (16) is fixedly mounted on the side wall of the vertical plate frame (11), and the control panel (16) is electrically connected to the refining furnace body (7), the first servo motor (9), the second servo motor (10), the nitrogen generator (3) and the booster pump (25).

6. A fine filtering device for slag separation in a smelting furnace according to claim 1, characterized in that: A sealing ring (34) is fixedly mounted on the bottom of the heat-insulating cover (4), a sealing groove (35) is provided on the top of the refining furnace body (7), and the sealing ring (34) is embedded in the sealing groove (35).

7. A fine filtering device for separating and filtering slag from a smelting furnace according to claim 1, characterized in that: A liquid discharge pipe (8) is installed on one side of the bottom of the inner cavity of the refining furnace body (7).

8. A fine filtering device for slag separation in a smelting furnace according to claim 3, characterized in that: The central axes of the installation base plate (36), the protective sleeve (5), the sliding sleeve (39), the fine filter cartridge (6), the heat-insulating cover (4) and the refining furnace body (7) are on the same straight line.

9. A fine filtering device for slag separation in a smelting furnace according to claim 4, characterized in that: The cross-sectional shapes of the lifting slide groove (15) and the lifting slider (14) are T-shaped.

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