Aluminum molten aluminum slag removal device for aluminum alloy continuous casting

Abstract

The invention discloses an aluminum liquid deslagging device for continuous casting of aluminum alloy, and relates to the technical field of aluminum liquid deslagging. The invention comprises a supporting bottom plate and an aluminum liquid placing box for storing aluminum liquid, and also comprises a lifting and adjusting unit and an aluminum liquid deslagging unit; the lifting and adjusting unit comprises a supporting moving component and a lifting component; the aluminum liquid deslagging unit comprises an air guide component, a rotating component and a deslagging component; and a control component is arranged on the supporting bottom plate. The advantages are: the invention can mix an inert gas with a deslagging agent and inject them into the interior of the aluminum liquid together, and break the inert gas into a large number of dispersed bubbles by stirring and disperse them into the aluminum liquid, and utilize the gas partial pressure difference of the bubbles in the aluminum liquid and the surface adsorption principle to absorb hydrogen and oxidized impurities in the aluminum liquid, so that the impurities are brought out of the aluminum liquid surface as the bubbles rise, and the deslagging effect is better. At the same time, the aluminum slag in the aluminum liquid can be fully filtered out by scraping the side wall and screening through the liquid, and the removal of the aluminum slag is more thorough.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum liquid deslagging, and in particular to an aluminum liquid deslagging device for aluminum alloy continuous casting. Background Art

[0002] Aluminum alloy continuous casting is a casting process used to manufacture large, long aluminum plates, aluminum bars and other aluminum alloy products. When casting aluminum alloys, a slag removal device is usually used to remove impurities in the molten aluminum to improve the purity of the aluminum liquid and the quality of the finished aluminum alloy workpiece.

[0003] Existing slag removal devices use a variety of methods to achieve slag removal of aluminum liquid, such as a mixed furnace aluminum liquid slag removal agent spraying device with publication number CN205110777U, which includes a slag removal agent storage tank, a base trolley, an air pipe, and a spraying pipe; the slag removal agent storage tank includes an upper cylindrical tank body and a lower conical discharge funnel, the slag removal agent storage tank is fixed in the base trolley, the upper cylindrical tank body is located on the upper plane of the base trolley, the lower conical discharge funnel is located on the lower plane of the base trolley, and a fixing card of the slag removal agent storage tank is provided on one side of the base trolley;

[0004] The existing slag removal of aluminum liquid usually involves sprinkling a slag removal agent on the aluminum liquid, so that the slag removal agent is mixed with the oxide in the aluminum liquid to achieve slag removal. When the slag removal agent is sprayed, it floats more on the surface of the aluminum liquid, so that it can only be mixed with the aluminum liquid in the upper layer to achieve slag removal, while the aluminum liquid at a deeper position at the bottom cannot be fully slag removed. For example, the above-mentioned referenced prior art uses a spraying material pipe to spray the slag removal agent on the surface of the aluminum liquid for slag removal. This slag removal method cannot achieve deep and sufficient slag removal of the aluminum liquid, and part of the aluminum slag will adhere to the inner wall of the aluminum liquid placement box during slag removal, instead of floating directly on the surface of the aluminum liquid, so that the aluminum slag cannot be completely removed during manual slag skimming, and the slag removal effect is poor;

[0005] Therefore, it is urgent to design a molten aluminum slag removal device for aluminum alloy continuous casting to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an aluminum liquid slag removal device for aluminum alloy continuous casting, which solves the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an aluminum liquid deslagging device for aluminum alloy continuous casting, comprising a supporting bottom plate and an aluminum liquid placement box for storing aluminum liquid, and also comprising a lifting and adjusting unit and an aluminum liquid deslagging unit;

[0008] The lifting and lowering adjustment unit is arranged on the supporting bottom plate, and is used to adjust the horizontal and height positions of the aluminum liquid deslagging unit, and includes a supporting moving component and a lifting component. The supporting moving component is used to realize the movement and adjustment of the overall support and the horizontal position, and the lifting component is used to realize the adjustment of the height position;

[0009] The aluminum liquid deslagging unit is arranged on the lifting and adjusting unit, and is used for degassing and deslagging the aluminum liquid in the aluminum liquid placing box. The aluminum liquid deslagging unit comprises a gas guide component, a rotating component and a deslagging component, wherein the rotating component is used to realize the rotation of the gas guide component and the deslagging component to promote the degassing and deslagging of the aluminum liquid, the gas guide component is used to introduce inert gas into the aluminum liquid to realize gas guide deslagging, and the deslagging component is used to realize the separation and removal of aluminum slag in the aluminum liquid;

[0010] The control component is arranged on the supporting bottom plate, and is used to control the opening and closing and operation status of the lifting and adjusting unit and the aluminum liquid deslagging unit, and realize the quantitative transmission of the inert gas.

[0011] Preferably, the supporting moving assembly includes a plurality of moving wheels arranged at the lower part of the supporting base plate, and the plurality of moving wheels cooperate to realize the overall movement of the lifting and adjusting unit and the aluminum liquid slag removal unit, so as to facilitate the slag removal operation of the aluminum liquid in the aluminum liquid placement box at different positions. A supporting column is fixedly installed on the supporting base plate, and the lifting assembly is arranged on the supporting column.

[0012] Preferably, the lifting assembly includes a lifting motor fixedly mounted on a support column, a driving gear fixedly mounted on the driving end of the lifting motor, a driven gear rotatably mounted on the bottom of the support column, a lifting chain is sleeved between the driving gear and the driven gear, and a lifting limit mechanism is installed between the lifting chain and the support column.

[0013] Preferably, the lifting limit mechanism includes two trapezoidal slide grooves provided on the supporting column, trapezoidal sliders are slidably mounted on the two trapezoidal slide grooves, and a lifting seat cooperating with the supporting column is fixedly mounted on the two trapezoidal sliders, a lifting linkage block is fixedly mounted on one side of the lifting chain, and the lifting linkage block is fixedly mounted in the lifting seat, and the lifting motor drives the lifting chain to transmit, thereby realizing the height adjustment of the lifting linkage block, thereby driving the lifting seat to move up and down.

[0014] Preferably, the rotating assembly includes a lifting box fixedly mounted on a lifting seat, a servo motor fixedly mounted inside the lifting box, and a driving roller rotatably mounted between the driving end of the servo motor and the lifting box, a connecting pipe fixedly mounted on the driving roller, and a gas-guiding rotating rod fixedly connected to the lower part of the connecting pipe.

[0015] Preferably, the control component includes a support frame fixedly mounted on a support base plate, a gas control box fixedly mounted on the support frame, a gas control pump arranged in the gas control box, a feed pipe for placing a slag removal agent arranged on the gas control box, an air inlet end of the gas control pump connected to an external inert gas delivery pipe, an air outlet end of the gas control pump fixedly connected to an air pipe, and an auxiliary drag chain cooperating with the air pipe is arranged on the support column.

[0016] Preferably, the air guide assembly includes an air guide plate rotatably mounted on the outside of the connecting pipe, and two limit connecting frames are fixedly mounted between the air guide plate and the lifting box, a plurality of air inlet openings are opened on the connecting pipe, and the air guide plate is connected to the air guide pipe;

[0017] The inert gas and the slag removal agent are injected into the gas guide control box and mixed, and are quantitatively injected into the gas guide disk through the gas guide pipe under the control of the gas guide control pump, and enter the connecting pipe through multiple air inlet openings. The inert gas in the connecting pipe is transmitted downward through the gas guide rotating rod, and a gas injection mechanism is provided at the lower part of the gas guide rotating rod.

[0018] Preferably, the gas injection mechanism comprises an air storage cylinder fixedly connected to the lower part of the gas guide rotating rod, a plurality of gas outlet conical tubes are fixedly connected to the air storage cylinder, and a one-way control valve is arranged on each gas outlet conical tube.

[0019] Preferably, the slag removal assembly includes a limit spring rotatably mounted on the lower part of the air storage cylinder, a bottom receiving tray is fixedly mounted on the lower part of the limit spring, a filter collecting plate is arranged inside the bottom receiving tray, a fixing ring is fixedly mounted on the outside of the air storage cylinder, a plurality of cleaning mechanisms are arranged on the fixing ring, and a shielding mechanism is arranged on the bottom receiving tray.

[0020] Preferably, the cleaning mechanism comprises a connecting rod fixedly mounted on a fixing ring, a telescopic rod is slidably mounted inside the connecting rod, a centrifugal spring is fixedly mounted between the telescopic rod and the inner wall of the connecting rod, and a side scraper for cleaning the inner wall of the aluminum liquid placement box is fixedly mounted on the telescopic rod;

[0021] The shielding mechanism includes a plurality of engaging rods mounted on a bottom storage tray, on which two covering semicircular discs are fixedly mounted, and the two covering semicircular discs cooperate with each other, and a plurality of arc-shaped reflux grooves are provided at the lower parts of the two covering semicircular discs.

[0022] The present invention provides a molten aluminum slag removal device for aluminum alloy continuous casting, which has the following beneficial effects:

[0023] 1. When the slag removal device is removing slag from the aluminum liquid, the horizontal and height positions of the aluminum liquid slag removal unit can be flexibly changed through the cooperation of the supporting moving component and the lifting component, so that the slag removal operation can be performed on the aluminum liquid in the aluminum liquid placement box at different positions, with a wider slag removal range and higher slag removal efficiency.

[0024] 2. When the slag removal device is removing slag from the aluminum liquid, the inert gas and the slag removal agent can be mixed and injected into the aluminum liquid to achieve efficient slag removal. The inert gas and the slag removal agent can be injected into the aluminum liquid by means of rotating gas injection and spraying, so that the inert gas, the slag removal agent and the aluminum liquid are fully mixed, and the slag removal is more thorough.

[0025] 3. When the slag removal device is removing slag from the aluminum liquid, the servo motor, the connecting rod, the telescopic rod and the side scraper cooperate to fully stir the aluminum liquid during the slag removal, so that the aluminum liquid, the slag removal agent and the inert gas are fully mixed, thereby improving the slag removal effect. The speed of the servo motor can be adjusted to realize the position movement of the side scraper to scrape the inner wall of the aluminum liquid storage box, effectively preventing the aluminum slag from adhering to the inner wall of the aluminum liquid storage box, so that the aluminum slag can be removed more thoroughly.

[0026] 4. When the slag removal device is removing slag from the aluminum liquid, the cooperation of the bottom collecting plate, the covering semicircular plate and the filtering and collecting plate can not only cover the upper part of the aluminum liquid placing box during stirring and removing slag to prevent the aluminum liquid from splashing around during stirring, but also can make the aluminum liquid flow out through the filtering and collecting plate through the rising of the bottom collecting plate after the slag removal, and completely filter out the aluminum slag in the process of the aluminum liquid flowing out, so that the aluminum slag is collected more thoroughly.

[0027] In summary, the present invention can mix the inert gas and the slag removal agent and inject them into the interior of the aluminum liquid together, and break the inert gas into a large number of dispersed bubbles by stirring and disperse them into the aluminum liquid. The gas partial pressure difference of the bubbles in the aluminum liquid and the surface adsorption principle are utilized to absorb hydrogen and oxidized impurities in the aluminum liquid, so that the impurities are brought out to the surface of the aluminum liquid as the bubbles rise, and the slag removal effect is better. At the same time, the aluminum slag in the aluminum liquid can be fully filtered out by scraping the side wall and screening through the liquid, and the removal of the aluminum slag is more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of a molten aluminum slag removal device for aluminum alloy continuous casting proposed by the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of the structure after rotating a certain angle;

[0031] Figure 3 for Figure 1Schematic diagram of the structure after removing the aluminum liquid placement box;

[0032] Figure 4 It is a structural schematic diagram of the lifting and lowering adjustment unit in the present invention;

[0033] Figure 5 for Figure 4 Schematic diagram of the structure of the middle support column and lifting motor;

[0034] Figure 6 for Figure 4 Schematic diagram of the structural breakdown of the lifting motor and lifting box;

[0035] Figure 7 for Figure 6 Schematic diagram of the structure of the mid-bottom storage tray and the gas-guiding rotating rod;

[0036] Figure 8 for Figure 7 Schematic diagram of structural decomposition;

[0037] Fig. 9 for Figure 7 A schematic diagram of the structure of a central bottom storage tray and a covered semicircular tray;

[0038] Fig.10 for Figure 8 Schematic diagram of the structure of the central gas guide rotating rod and the gas storage cylinder;

[0039] Fig.11 for Figure 8 A schematic diagram of the structure of a middle fixing ring and multiple connecting rods;

[0040] Fig.12 for Fig.11 Schematic diagram of the internal structure of the connecting rod.

[0041] In the figure: 1 supporting bottom plate, 2 supporting column, 3 aluminum liquid placing box, 4 supporting frame, 5 air guide control box, 6 lifting box, 7 air guide pipe, 8 bottom storage tray, 9 lifting seat, 10 lifting chain, 11 lifting motor, 12 driving gear, 13 driven gear, 14 lifting linkage block, 15 auxiliary drag chain, 16 covering semicircular disk, 17 servo motor, 18 air guide disk, 19 air guide rotating rod, 20 air outlet cone tube, 21 side scraper, 22 driving roller, 23 filter collecting plate, 24 locking rod, 25 arc reflux groove, 26 air storage cylinder, 27 limit spring, 28 fixing ring, 29 connecting rod, 30 telescopic rod, 31 centrifugal spring, 32 protective cover, 33 moving wheel, 34 limit groove. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] Example 1: Reference Figure 1-Figure 3 , a molten aluminum slag removal device for aluminum alloy continuous casting, comprising a supporting bottom plate 1 and a molten aluminum placement box 3 for storing molten aluminum, wherein the molten aluminum placement box 3 is used to store molten aluminum after melting, and remove impurities in the molten aluminum in the molten aluminum placement box 3;

[0044] The slag removal device also includes a lifting and lowering adjustment unit, an aluminum liquid slag removal unit and a control component;

[0045] The lifting adjustment unit is arranged on the supporting bottom plate 1, and is used to adjust the horizontal and height positions of the aluminum liquid deslagging unit, so as to change the horizontal position of the aluminum liquid deslagging unit, thereby performing deslagging operations on the aluminum liquid in different aluminum liquid placing boxes 3, and at the same time change the height position of the aluminum liquid deslagging unit, thereby performing deslagging operations on aluminum liquids at different depths;

[0046] The aluminum liquid slag removal unit is arranged on the lifting and adjusting unit, and is used to degas and remove slag from the aluminum liquid in the aluminum liquid placement box 3. An inert gas (argon or nitrogen, etc.) is mixed with a slag removal agent and then injected into the aluminum liquid to fully mix the aluminum liquid with the inert gas and the slag removal agent, thereby fully removing the gas or oxide in the aluminum liquid.

[0047] The control component is arranged on the supporting base plate 1, and is used to control the opening and closing and operating status of the lifting and adjusting unit and the aluminum liquid deslagging unit, and realize the quantitative transmission of the inert gas. It can realize the quantitative delivery of the inert gas and the deslagging agent according to the content of the aluminum liquid, and effectively avoid waste.

[0048] Example 2: Reference Figure 3-Figure 6 , the technical solution of this embodiment is different from that of the first embodiment in that: the lifting and adjusting unit includes a support moving component and a lifting component, the support moving component is used to realize the movement and adjustment of the overall support and horizontal position, and the lifting component is used to realize the adjustment of the height position;

[0049] The supporting moving assembly includes a plurality of moving wheels 33 arranged at the lower part of the supporting base plate 1. The plurality of moving wheels 33 cooperate with each other to realize the overall movement of the lifting and adjusting unit and the aluminum liquid slag removal unit, so as to facilitate the slag removal operation of the aluminum liquid in the aluminum liquid placement box 3 at different positions, and facilitate the transportation and movement of the slag removal device, so as to avoid the slag removal device affecting the transmission and use of the aluminum liquid.

[0050] In a further embodiment, a support column 2 is fixedly mounted on the support base plate 1, and a lifting assembly is arranged on the support column 2, the lifting assembly comprises a lifting motor 11 fixedly mounted on the support column 2, a driving gear 12 is fixedly mounted on the driving end of the lifting motor 11, a driven gear 13 is rotatably mounted on the bottom of the support column 2, and a lifting chain 10 is sleeved between the driving gear 12 and the driven gear 13;

[0051] When the lifting motor 11 is started, the driving gear 12 on the driving end thereof will be driven to rotate, and the driving gear 12 will rotate and drive the lifting chain 10 to transmit with the cooperation of the driven gear 13;

[0052] A protective cover 32 is provided on the support column 2, and the driven gear 13 is located in the protective cover 32. The protective cover 32 is used to protect the driven gear 13 to prevent the driven gear 13 from collision and damage when the device moves. It can also protect the staff to prevent the staff from touching the driven gear 13 and getting hurt.

[0053] A lifting limit mechanism is installed between the lifting chain 10 and the support column 2. The lifting limit mechanism includes two trapezoidal slides provided on the support column 2. Trapezoidal sliders are slidably mounted on the two trapezoidal slides, and a lifting seat 9 matching the support column 2 is fixedly mounted on the two trapezoidal sliders.

[0054] The trapezoidal sliding block cooperates with the trapezoidal sliding groove to limit the lifting seat 9, so that the lifting seat 9 can only perform stable vertical lifting movement on the support column 2 without deviation and separation.

[0055] A lifting linkage block 14 is fixedly installed on one side of the lifting chain 10, and the lifting linkage block 14 is fixedly installed in the lifting seat 9. The lifting motor 11 drives the lifting chain 10 to adjust the height of the lifting linkage block 14, thereby driving the lifting seat 9 to move up and down;

[0056] When the lifting chain 10 is in transmission, the lifting linkage block 14 arranged thereon will rise or fall with the transmission of the lifting chain 10, so that the lifting seat 9 can be driven to rise and fall vertically through the lifting linkage block 14, thereby realizing the stable lifting movement of the aluminum liquid deslagging unit;

[0057] The method of using the lifting motor 11 to drive the lifting chain 10 to perform lifting has the advantage of higher stability, and the transmission of the lifting chain 10 can be adjusted by adjusting the rotation speed and the number of rotations of the lifting motor 11 to achieve fixed-distance lifting of the lifting seat 9. The lifting chain 10 transmission can also withstand greater tension and pressure, and can provide precise lifting position control and achieve stable movement, with higher lifting stability.

[0058] Example 3: Reference Figure 1-Figure 3 as well as Figure 6-Figure 12 The technical solution of this embodiment is different from that of the second embodiment in that: the aluminum liquid slag removal unit includes a gas guide component, a rotating component and a slag removal component, wherein the rotating component is used to realize the rotation of the gas guide component and the slag removal component to promote the degassing and slag removal of the aluminum liquid, the gas guide component is used to introduce inert gas into the aluminum liquid to realize gas guide slag removal, and the slag removal component is used to realize the separation and removal of aluminum slag in the aluminum liquid;

[0059] The rotating assembly includes a lifting box 6 fixedly mounted on the lifting seat 9, a servo motor 17 fixedly mounted in the lifting box 6, and a driving roller 22 rotatably mounted between the driving end of the servo motor 17 and the lifting box 6, a connecting pipe fixedly mounted on the driving roller 22, and a gas guide rotating rod 19 fixedly connected to the lower part of the connecting pipe;

[0060] The lifting box 6 is arranged on the lifting seat 9 and can be lifted and lowered along with the lifting seat 9. When the servo motor 17 therein is started, it drives the connecting pipe and the gas guide rotating rod 19 to rotate together through the driving roller 22.

[0061] The control assembly includes a support frame 4 fixedly mounted on the support base plate 1, a gas guide control box 5 fixedly mounted on the support frame 4, a gas guide control pump disposed in the gas guide control box 5, a feed pipe for placing a slag remover disposed on the gas guide control box 5, an air inlet end of the gas guide control pump connected to an external inert gas delivery pipe, and a gas guide pipe 7 fixedly connected to the gas outlet end of the gas guide control pump;

[0062] When performing the slag removal operation of the aluminum liquid, the inert gas is first input into the gas guide control box 5 through the external gas delivery pipe, and then the slag removal agent is poured into the gas guide control box 5 through the feed pipe, and the inert gas is fully mixed with the gas guide control box 5. At this time, the gas guide control pump is started to pump the mixed gas (a mixture of the inert gas and the slag removal agent) in the gas guide control box 5 out through the gas guide pipe 7;

[0063] The support column 2 is provided with an auxiliary drag chain 15 which cooperates with the air duct 7. The auxiliary drag chain 15 plays the role of auxiliary support and protection of the air duct 7. It is used to protect the air duct 7 when it is lifted, moved and stretched, so as to prevent the air duct 7 from being subjected to greater mechanical wear.

[0064] In a further embodiment, the air guide assembly includes an air guide plate 18 rotatably mounted on the outside of the connecting pipe, and two limit connecting frames are fixedly mounted between the air guide plate 18 and the lifting box 6, a plurality of air inlet openings are opened on the connecting pipe, and the air guide plate 18 is connected to the air guide pipe 7;

[0065] Two limit connecting frames are arranged between the gas guide plate 18 and the lifting box 6, and are used to limit and fix the gas guide plate 18, so that the gas guide plate 18 can only conduct the gas injection of the mixed gas, and will not rotate with the rotation of the connecting pipe;

[0066] After the mixed gas enters the gas guide plate 18 , it will be injected into the connecting pipe through a plurality of gas inlet openings. The inert mixed gas entering the connecting pipe will enter the gas guide rotating rod 19 and be transported downward along with the gas guide rotating rod 19 .

[0067] The lower part of the gas guide rotating rod 19 is provided with a gas injection mechanism, which includes a gas storage cylinder 26 fixedly connected to the lower part of the gas guide rotating rod 19, and the gas storage cylinder 26 is fixedly connected to a plurality of gas outlet conical tubes 20, and each gas outlet conical tube 20 is provided with a one-way control valve;

[0068] The inert mixed gas in the gas-guiding rotating rod 19 will be injected into the gas storage cylinder 26, and directly injected into the aluminum liquid in the aluminum liquid placement box 3 through a plurality of gas outlet conical tubes 20, so as to realize direct mixing of the aluminum liquid and the mixed gas, and fully improve the effect of aluminum liquid slag removal.

[0069] While the mixed gas is being discharged through the gas outlet conical tube 20, the servo motor 17 will start to drive the multiple gas outlet conical tubes 20 to rotate through the driving roller 22, the connecting tube, the gas guide rotating rod 19, and the gas storage cylinder 26, so that the mixed gas in the multiple gas outlet conical tubes 20 is spirally injected into the aluminum liquid. At the same time, the rotation of the multiple gas outlet conical tubes 20 can also stir the aluminum liquid, improve the fluidity of the aluminum liquid, make the aluminum liquid fully contact with the mixed gas, and improve the removal effect of impurities in the aluminum liquid;

[0070] The rotation of the multiple gas outlet conical tubes 20 can break the inert gas in the aluminum liquid into a large number of dispersed bubbles and disperse them in the aluminum liquid. By utilizing the gas partial pressure difference of the bubbles in the molten metal and the surface adsorption principle, the bubbles can absorb hydrogen and oxidized impurities in the aluminum liquid, so that the impurities are carried out of the aluminum liquid surface as the bubbles rise, thereby purifying the aluminum liquid.

[0071] Because the bubbles are small and dispersed, they will rotate with the rotating aluminum liquid when they are evenly mixed with it, and slowly float up in the aluminum liquid in a spiral shape without forming a continuous straight upward airflow, which can effectively increase the contact range between the bubbles and impurities in the aluminum liquid, and further improve the purification effect of the aluminum liquid.

[0072] In a further embodiment, the slag removal assembly includes a limit spring 27 rotatably mounted at the bottom of the gas storage cylinder 26, a bottom sinking receiving tray 8 is fixedly mounted at the bottom of the limit spring 27, and a filter collecting plate 23 is arranged inside the bottom sinking receiving tray 8, and a fixing ring 28 is fixedly mounted on the outside of the gas storage cylinder 26;

[0073] When the aluminum liquid is subjected to slag removal and purification, the position of the bottom receiving tray 8 is controlled by the lifting and lowering adjustment unit, so that the bottom receiving tray 8 is slowly lowered and sunk to the bottom of the aluminum liquid placement box 3. During the sinking process of the bottom receiving tray 8, the aluminum liquid in the aluminum liquid placement box 3 will gradually flow to the upper part of the bottom receiving tray 8 through the filter collection plate 23, thereby completing the conduction of the aluminum liquid, and preventing the aluminum liquid from being slag-removed at the lower part of the bottom receiving tray 8, resulting in the aluminum slag generated during the slag removal being left at the lower part of the bottom receiving tray 8 and unable to be collected;

[0074] The bottom storage tray 8 is rotated at the lower part of the gas storage cylinder 26 by the limit spring 27, and the mass of the bottom storage tray 8 is large, so that the rotation of the gas storage cylinder 26 will not drive the bottom storage tray 8 to rotate, and the limit spring 27 can be contracted, so that when the bottom storage tray 8 moves to the bottom of the aluminum liquid placement box 3, the gas storage cylinder 26 can also continue to move downward to compress the limit spring 27, so that the gas storage cylinder 26 still has a certain lifting space in the aluminum liquid placement box 3, so that the height position of the upper structure of the gas storage cylinder 26 in the aluminum liquid placement box 3 can be adjusted to a certain extent, further increasing the range of gas injection and stirring, thereby improving the slag removal effect of the aluminum liquid;

[0075] The bottom of the sinking receiving tray 8 is set to be an inverted truncated cone shape, so as to better match with the bottom of the aluminum liquid placement box 3, and further improve the collection effect of the sinking receiving tray 8 on aluminum slag.

[0076] The fixing ring 28 is provided with a plurality of cleaning mechanisms, the cleaning mechanisms comprising a connecting rod 29 fixedly mounted on the fixing ring 28, a telescopic rod 30 slidably mounted in the connecting rod 29, a centrifugal spring 31 fixedly mounted between the telescopic rod 30 and the inner wall of the connecting rod 29, and a side scraper 21 for cleaning the inner wall of the aluminum liquid placing box 3 fixedly mounted on the telescopic rod 30;

[0077] When the servo motor 17 drives the gas guide rotating rod 19 and the gas storage cylinder 26 to rotate, the fixed ring 28 and the multiple connecting rods 29 thereon will be driven to rotate. The rotation of the multiple connecting rods 29 will drive the multiple telescopic rods 30 thereon to rotate. The multiple connecting rods 29 and the telescopic rods 30 rotate together to stir the aluminum liquid on the bottom receiving tray 8, so that the aluminum liquid and the mixed gas are mixed more evenly, and the slag removal effect is further improved.

[0078] As the speed of the servo motor 17 increases, the centrifugal force generated by the rotation of the connecting rod 29 and the telescopic rod 30 gradually increases, and the telescopic rod 30 will slide and move away from the connecting rod 29 under the action of the centrifugal force (the corresponding centrifugal spring 31 will be stretched at this time). When the telescopic rod 30 moves, it will drive the side scraper 21 thereon to move and approach the side wall of the aluminum liquid placement box 3. When the side scraper 21 moves to squeeze the side wall of the aluminum liquid placement box 3, it moves to the maximum position and cannot move further.

[0079] The side scraper 21 will rotate with the rotation of the telescopic rod 30, and will scrape the side wall of the aluminum liquid placement box 3 while rotating, so as to scrape off the aluminum slag attached to the side wall of the aluminum liquid placement box 3, and prevent the aluminum slag from accumulating on the side wall of the aluminum liquid placement box 3 and being unable to be cleaned and collected.

[0080] The bottom storage tray 8 is provided with a shielding mechanism, which includes a plurality of clamping rods 24 clamped and installed on the bottom storage tray 8, and two covering semi-circular discs 16 are fixedly installed on the plurality of clamping rods 24, and the two covering semi-circular discs 16 cooperate with each other;

[0081] When the aluminum liquid is being deslagging, the two covering semicircular discs 16 can be snapped onto the bottom receiving tray 8. At this time, when the bottom receiving tray 8 is lowered to the bottom of the aluminum liquid placing box 3, the two covering semicircular discs 16 will be located at the upper part of the aluminum liquid placing box 3. The two covering semicircular discs 16 can cooperate to shield the upper part of the aluminum liquid placing box 3 to prevent the aluminum liquid in the aluminum liquid placing box 3 from splashing around when the aluminum liquid is being stirred and deslagging, which can avoid the aluminum liquid from splashing and causing waste, and can also avoid the operator from being scalded by the splashed aluminum liquid.

[0082] A plurality of arc-shaped reflux grooves 25 are provided at the lower part of the two covering semi-circular disks 16. When the aluminum liquid splashed by stirring splashes to the lower part of the covering semi-circular disk 16, it will flow back through the plurality of arc-shaped reflux grooves 25 thereon and fall into the aluminum liquid placement box 3, thereby completing the automatic collection of the aluminum liquid and preventing the aluminum liquid from adhering to the bottom of the covering semi-circular disk 16.

[0083] After the slag removal is completed, the bottom receiving tray 8 is driven to gradually move upward by the lifting assembly. During the upward movement of the bottom receiving tray 8, the aluminum liquid therein will gradually flow out through the filter collecting plate 23 on the bottom receiving tray 8, while the aluminum slag generated during the slag removal will be blocked by the filter collecting plate 23 and cannot flow out, thereby completing the automatic separation of the aluminum liquid and the aluminum slag. When the bottom receiving tray 8 is moved out of the surface of the aluminum liquid, the aluminum slag therein can be taken out, and the collection of the aluminum slag is more efficient and comprehensive.

[0084] The specific slag removal method of this slag removal device is as follows:

[0085] Position adjustment: when removing slag from the aluminum liquid in the aluminum liquid storage box 3, first adjust the overall position of the aluminum liquid slag removal unit by supporting the moving assembly, so that the sinking receiving tray 8 in the aluminum liquid slag removal unit is directly above the aluminum liquid storage box 3;

[0086] The height position of the bottom receiving tray 8 is then adjusted by the lifting assembly, so that the bottom receiving tray 8 slowly descends and sinks to the bottom of the aluminum liquid placement box 3. During the sinking process of the bottom receiving tray 8, the aluminum liquid in the aluminum liquid placement box 3 will gradually flow to the upper part of the bottom receiving tray 8 through the filter collection plate 23.

[0087] Degassing and deslagging of aluminum liquid: Inert gas is input into the gas control box 5 through the external gas pipe, and then the deslagging agent is poured into the gas control box 5 through the feed pipe, and the inert gas is fully mixed with the gas control box 5. At this time, the gas control pump is started to pump the mixed gas (a mixture of inert gas and deslagging agent) in the gas control box 5 out through the gas pipe 7;

[0088] The mixed gas is directly injected into the aluminum liquid in the aluminum liquid placement box 3 through the multiple gas outlet conical tubes 20 by the gas guide mechanism, so as to achieve direct mixing of the aluminum liquid and the mixed gas. While the mixed gas is injected, the servo motor 17 is started to drive the multiple gas outlet conical tubes 20 to rotate through the driving roller 22, the connecting tube, the gas guide rotating rod 19, and the gas storage cylinder 26, so that the mixed gas in the multiple gas outlet conical tubes 20 is spirally injected into the aluminum liquid. At the same time, the rotation of the multiple gas outlet conical tubes 20 can also stir the aluminum liquid, improve the fluidity of the aluminum liquid, make the aluminum liquid fully contact with the mixed gas, and improve the removal effect of impurities in the aluminum liquid;

[0089] When the mixed gas is mixed with the aluminum liquid to remove the slag, the servo motor 17 drives the gas-guiding rotating rod 19 and the gas storage cylinder 26 to rotate, driving the fixed ring 28 and the multiple connecting rods 29 and the multiple telescopic rods 30 thereon to rotate. As the speed of the servo motor 17 increases, the centrifugal force generated by the rotation of the connecting rods 29 and the telescopic rods 30 gradually increases, and the telescopic rods 30 will slide and move away from the connecting rods 29 under the action of the centrifugal force. When the telescopic rods 30 move, they will drive the side scrapers 21 thereon to move and approach the side wall of the aluminum liquid placement box 3. When the side scrapers 21 move to squeeze the side wall of the aluminum liquid placement box 3, they move to the maximum position and cannot move further.

[0090] The side scraper 21 rotates with the rotation of the telescopic rod 30, and while rotating, it scrapes the side wall of the aluminum liquid placing box 3, so as to scrape off the aluminum slag attached to the side wall of the aluminum liquid placing box 3, thereby preventing the aluminum slag from accumulating on the side wall of the aluminum liquid placing box 3 and being unable to be cleaned and collected;

[0091] After the slag removal is completed, the bottom receiving tray 8 is driven to gradually move upward by the lifting assembly. During the upward movement of the bottom receiving tray 8, the aluminum liquid therein will gradually flow out through the filter collecting plate 23 on the bottom receiving tray 8, while the aluminum slag generated during the slag removal will be blocked by the filter collecting plate 23 and cannot flow out, thereby completing the automatic separation of the aluminum liquid and the aluminum slag. When the bottom receiving tray 8 is moved out of the surface of the aluminum liquid, the aluminum slag therein can be taken out.

[0092] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A molten aluminum slag removal device for aluminum alloy continuous casting, comprising a supporting bottom plate (1) and a molten aluminum placement box (3) for storing molten aluminum, characterized in that: It also includes a lifting and lowering adjustment unit and an aluminum liquid deslagging unit; The lifting and lowering adjustment unit is arranged on the supporting bottom plate (1) and is used to adjust the horizontal and height positions of the aluminum liquid deslagging unit. The lifting and lowering adjustment unit comprises a supporting moving component and a lifting and lowering component. The supporting moving component is used to adjust the overall support and the horizontal position, and the lifting and lowering component is used to adjust the height position. The aluminum liquid deslagging unit is arranged on the lifting and regulating unit, and is used for degassing and deslagging the aluminum liquid in the aluminum liquid placing box (3). The aluminum liquid deslagging unit comprises a gas guide component, a rotating component and a deslagging component, wherein the rotating component is used to realize the rotation of the gas guide component and the deslagging component to promote the degassing and deslagging of the aluminum liquid, the gas guide component is used to introduce inert gas into the aluminum liquid to realize gas guide deslagging, and the deslagging component is used to realize the separation and removal of aluminum slag in the aluminum liquid; An air guide rotating rod (19) is arranged in the air guide assembly, and an air injection mechanism is arranged at the lower part of the air guide rotating rod (19), and the air injection mechanism comprises an air storage cylinder (26) fixedly connected to the lower part of the air guide rotating rod (19), and a plurality of air outlet conical tubes (20) are fixedly connected to the air storage cylinder (26), and each air outlet conical tube (20) is provided with a one-way control valve; The slag removal assembly comprises a limit spring (27) rotatably mounted on the lower part of the gas storage cylinder (26); a bottom-sinking receiving tray (8) is fixedly mounted on the lower part of the limit spring (27); a filter collecting plate (23) is arranged inside the bottom-sinking receiving tray (8); a fixing ring (28) is fixedly mounted on the outside of the gas storage cylinder (26); a plurality of cleaning mechanisms are arranged on the fixing ring (28); and a shielding mechanism is arranged on the bottom-sinking receiving tray (8); The cleaning mechanism comprises a connecting rod (29) fixedly mounted on a fixing ring (28), a telescopic rod (30) being slidably mounted inside the connecting rod (29), a centrifugal spring (31) being fixedly mounted between the telescopic rod (30) and the inner wall of the connecting rod (29), and a side scraper (21) for cleaning the inner wall of the aluminum liquid storage box (3) being fixedly mounted on the telescopic rod (30); The shielding mechanism comprises a plurality of engaging rods (24) engaged with each other on the bottom storage tray (8), two covering semi-circular discs (16) being fixedly mounted on the plurality of engaging rods (24), and the two covering semi-circular discs (16) are matched with each other, and a plurality of arc-shaped reflux grooves (25) are provided at the lower parts of the two covering semi-circular discs (16); The control component is arranged on the supporting base plate (1) and is used to control the opening and closing and operating states of the lifting and lowering adjustment unit and the aluminum liquid deslagging unit, and to realize the quantitative transmission of the inert gas.

2. The aluminum liquid slag removal device for aluminum alloy continuous casting according to claim 1, characterized in that: The supporting moving assembly comprises a plurality of moving wheels (33) arranged at the lower part of the supporting base plate (1), and the plurality of moving wheels (33) cooperate with each other to realize the overall movement of the lifting and adjusting unit and the aluminum liquid deslagging unit, so as to facilitate the deslagging operation of the aluminum liquid in the aluminum liquid placement box (3) at different positions. A supporting column (2) is fixedly mounted on the supporting base plate (1), and the lifting assembly is arranged on the supporting column (2).

3. The aluminum liquid slag removal device for aluminum alloy continuous casting according to claim 2 is characterized in that: The lifting assembly comprises a lifting motor (11) fixedly mounted on a support column (2); a driving gear (12) is fixedly mounted on a driving end of the lifting motor (11); a driven gear (13) is rotatably mounted on the bottom of the support column (2); a lifting chain (10) is sleeved between the driving gear (12) and the driven gear (13); and a lifting limit mechanism is installed between the lifting chain (10) and the support column (2).

4. The aluminum liquid deslagging device for aluminum alloy continuous casting according to claim 3 is characterized in that: The lifting limit mechanism comprises two trapezoidal slide grooves provided on the support column (2), the two trapezoidal slide grooves are both slidably engaged with a trapezoidal slider, and a lifting seat (9) matched with the support column (2) is fixedly installed on the two trapezoidal sliders, a lifting linkage block (14) is fixedly installed on one side of the lifting chain (10), and the lifting linkage block (14) is fixedly installed in the lifting seat (9), and the lifting motor (11) drives the lifting chain (10) to transmit, so as to adjust the height of the lifting linkage block (14), thereby driving the lifting seat (9) to move up and down.

5. The aluminum liquid deslagging device for aluminum alloy continuous casting according to claim 4 is characterized in that: The rotating assembly comprises a lifting box (6) fixedly mounted on a lifting seat (9), a servo motor (17) fixedly mounted inside the lifting box (6), a driving roller (22) rotatably mounted between a driving end of the servo motor (17) and the lifting box (6), a connecting pipe fixedly mounted on the driving roller (22), and a gas-guiding rotating rod (19) fixedly connected to the lower part of the connecting pipe.

6. The aluminum liquid deslagging device for aluminum alloy continuous casting according to claim 5, characterized in that: The control assembly comprises a support frame (4) fixedly mounted on a support base plate (1), a gas guide control box (5) fixedly mounted on the support frame (4), a gas guide control pump arranged in the gas guide control box (5), a feed pipe for placing a slag remover arranged on the gas guide control box (5), an air inlet end of the gas guide control pump being connected to an external inert gas delivery pipe, an air guide pipe (7) fixedly connected to an air outlet end of the gas guide control pump, and an auxiliary drag chain (15) cooperating with the air guide pipe (7) being arranged on the support column (2).

7. The aluminum liquid slag removal device for aluminum alloy continuous casting according to claim 6, characterized in that: The air guide assembly comprises an air guide plate (18) rotatably mounted on the outside of the connecting pipe, and two limit connection frames are fixedly mounted between the air guide plate (18) and the lifting box (6), a plurality of air inlet openings are provided on the connecting pipe, and the air guide plate (18) is connected to the air guide pipe (7); The inert gas and the slag removal agent are both injected into the gas guide control box (5) and mixed with each other, and are quantitatively injected into the gas guide plate (18) through the gas guide pipe (7) under the control of the gas guide control pump, and are injected into the connecting pipe through multiple air inlet openings. The inert gas in the connecting pipe is transmitted downwardly through the gas guide rotating rod (19).

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