Magnesium alloy raw material proportioning device and proportioning preparation method thereof

Abstract

The invention discloses a magnesium alloy raw material proportioning device and a proportioning preparation method thereof, and belongs to the technical field of raw material proportioning, the magnesium alloy raw material proportioning device comprises a base and a smelting furnace fixedly connected to the top end of the base, an arc-shaped mounting seat is fixedly connected to the bottom end of the inner side of the smelting furnace, a furnace cover is arranged at the top end of the smelting furnace, and an adapter is formed in the center of the arc-shaped mounting seat; a material mixing furnace is rotationally connected into the adapter, a plurality of material gathering annular bases are fixedly connected to the inner wall of the smelting furnace from top to bottom, annular grooves are formed in the inner sides of the material gathering annular bases, and air cavities communicating with the annular grooves are formed in the material gathering annular bases. Through the material gathering annular base, the electromagnetic induction heating coil and the outer side stirring rod, the electromagnetic induction heating coil is used for independently heating and smelting metal raw materials at different smelting temperatures at all layers, and the phenomenon that a large amount of metal raw materials with low gasification points are gasified, so that the proportion of all the metal raw materials in the finished magnesium-aluminum alloy is deviated, and the smelting quality is improved is avoided. The quality of the finished magnesium-aluminum alloy is influenced.

Description

Technical Field

[0001] The invention relates to the technical field of raw material proportioning, and in particular to a magnesium alloy raw material proportioning device and a proportioning preparation method thereof. Background Art

[0002] When preparing magnesium-aluminum alloy, the required magnesium and aluminum metal powders need to be mixed in a certain proportion first. This process can be achieved by mechanical stirring, ball milling or other mixing equipment to ensure uniform mixing of the powders. The raw materials of magnesium-aluminum alloy include not only magnesium powder and aluminum powder, but also metal powders such as zinc, manganese, thorium, and zirconium. However, when preparing the existing magnesium-aluminum alloy, metal powders such as zinc, manganese, thorium, and zirconium are mixed with magnesium and aluminum metal powders to form a mixed salt, and then the mixed salt is placed in a smelting furnace for smelting and mixing;

[0003] Since the melting temperatures and gasification temperatures of various metal powders are different, the smelting temperature inside the smelting furnace is consistent. When the metal powder with the highest melting point melts, the melting temperature inside the smelting furnace has reached the gasification temperature of the metal powder with a low melting point. For example, the gasification temperature of zinc is 440°C, and the melting temperature of manganese is 1244°C. When manganese begins to melt, zinc has already begun to gasify, which will cause the content of the metal with a low melting temperature to decrease, and then cause a deviation in the raw material ratio inside the final formed magnesium-aluminum alloy, affecting the quality of the magnesium-aluminum alloy. Therefore, a magnesium alloy raw material ratio device and a ratio preparation method thereof are proposed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that due to the different melting temperatures and gasification temperatures of various metal powders, the smelting temperature inside the smelting furnace is consistent. When the metal powder with the highest melting temperature is melted, the metal with the low melting temperature has begun to gasify, resulting in deviation in the raw material ratio inside the final formed magnesium-aluminum alloy. A magnesium alloy raw material ratioing device and a ratio preparation method thereof are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A magnesium alloy raw material proportioning device comprises a base and a smelting furnace fixedly connected to the top of the base, the inner bottom end of the smelting furnace is fixedly connected to an arc-shaped mounting seat, the top of the smelting furnace is provided with a furnace cover, a transfer interface is provided at the center of the arc-shaped mounting seat, a mixing furnace is rotatably connected inside the transfer interface, a plurality of material gathering annular seats are fixedly connected from top to bottom to the inner wall of the smelting furnace, an annular groove is provided on the inner side of the material gathering annular seat, an air cavity connected to the annular groove is provided inside the material gathering annular seat, a sealing member which is slidably provided inside the annular groove and is in contact with the outer wall of the mixing furnace A mouth ring, a liquid inlet is provided on the side wall of the mixing furnace near the sealing ring, an outer stirring rod is fixedly connected to the outer wall of the mixing furnace, an inner cavity is provided inside the smelting furnace, a control motor is installed inside the inner cavity, the output end of the control motor extends to the inside of the mixing furnace, a control screw is fixedly connected to the output end of the control motor, a material loading and lifting seat is threadedly connected to the surface of the control screw, a circumferentially distributed inner stirring rod is fixedly connected to the top of the material loading and lifting seat, a receiving groove is provided on the side wall of the material loading and lifting seat, and a limit position assembly is arranged inside the receiving groove;

[0007] A lifting ring is provided on the outside of the smelting furnace, and a nut block is fixedly connected to the outer wall of the lifting ring. A lifting screw rod threadedly connected to the nut block is rotatably connected inside the base, and a lifting motor connected to the lifting screw rod is installed at the bottom end of the base. An electromagnetic induction heating coil for smelting metal is provided inside the lifting ring, and a magnetic attraction ring is fixedly connected to the top of the lifting ring.

[0008] Preferably, a feed inlet and an air pumping port are provided on the side wall of the smelting furnace near the top of the material gathering annular seat, and a control air valve is installed inside the air pumping port.

[0009] Preferably, the side wall of the smelting furnace is provided with an opening connected to the air cavity, a piston rod is slidably arranged inside the air cavity, the piston rod passes through the opening, and a support ring is fixedly connected to the inner wall of the annular groove near the air cavity to support the sealing ring.

[0010] Preferably, one end of the piston rod is fixedly connected to a magnetic block, and the magnetic block is fixedly connected to the outer side wall of the smelting furnace via a return spring.

[0011] Preferably, the limit assembly includes an electric push rod installed on the inner wall of the storage groove, one end of the electric push rod is fixedly connected to the limit block, the inner wall of the mixing furnace is provided with a limit slide groove adapted to the limit block, and a filter is provided on the material aggregation annular seat located near the lowest point on the side wall of the mixing furnace.

[0012] Preferably, a transmission internal gear ring is fixedly connected to the inner wall of the mixing furnace near the bottom end, a driving gear is fixedly connected to the surface of the control screw, a reverse transmission gear that meshes with the transmission internal gear ring and the driving gear is rotatably arranged at the inner bottom end of the smelting furnace, and a discharge pipe is arranged at the inner bottom end of the side wall of the smelting furnace.

[0013] A magnesium alloy raw material proportioning device provides a proportioning preparation method, comprising the following steps:

[0014] S1. Weighing and proportioning: using an electronic scale to weigh and proportion the metal powder required for the magnesium-aluminum alloy;

[0015] S2. Separate smelting: Weigh the metal powders, put those with similar smelting temperatures together, and place them on the gathering ring seats at different positions through the feeding port on the side wall of the smelting furnace. Then turn on the lifting motor to drive the lifting screw to rotate, so that the nut block drives the lifting ring to move from top to bottom, and the metal powders with different smelting temperatures are smelted independently;

[0016] S3, raw material mixing: when the lifting ring moves downward, the loading lifting seat inside the mixing furnace will move downward accordingly, so that the raw material metals melted in each layer flow into the mixing furnace, and the raw material metals are fully mixed under the rotation of the inner stirring rod;

[0017] S4, slag removal: open the furnace cover and add slag remover into the mixing furnace to make the slag loose and easy to clean, then move the loading lift seat down to the bottom of the mixing furnace, so that the mixed liquid raw metal passes through the filter screen and flows into the interior of the smelting furnace. At this time, the slag cannot pass through due to the blocking effect of the filter screen, and then move the loading lift seat up to the top layer of the mixing furnace, so as to carry the slag to the top layer of the mixing furnace, which provides convenience for slag cleaning.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This scheme is provided with a material gathering annular seat, an electromagnetic induction heating coil and an outer stirring rod. The electromagnetic induction heating coil is used to independently heat and melt the metal raw materials with different melting temperatures at each layer, so as to avoid the phenomenon of large-scale vaporization of metal raw materials with low vaporization points, resulting in deviations in the proportions of various metal raw materials in the finished magnesium-aluminum alloy, affecting the quality of the finished magnesium-aluminum alloy. At the same time, under the stirring action of the outer stirring rod, the metal raw materials in the same layer can be heated and melted evenly, avoiding the phenomenon that the raw materials accumulated on the outside are heated and melted first, thereby avoiding the phenomenon of a small amount of vaporization of the metal melted first.

[0020] 2. This solution is provided with a mixing furnace and a loading lifting seat. When the loading lifting seat descends to each layer of the material gathering annular seat, the liquid metal raw materials after each layer of melting can be mixed to realize the automatic mixing function of the liquid metal raw materials.

[0021] 3. This solution is provided with a filter screen and a loading lift. The filter screen can filter the slag generated during the smelting process, and the loading lift can carry the slag to the opening at the top of the mixing furnace, which is convenient for the smelting personnel to clean and recover, and significantly facilitates the cleaning of the slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a magnesium alloy raw material proportioning device proposed by the present invention;

[0023] Figure 2 This is a schematic cross-sectional structure diagram of a magnesium alloy raw material proportioning device proposed by the present invention;

[0024] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 for Figure 2 The enlarged structural diagram at B in the middle;

[0026] Figure 5 for Figure 2 The enlarged structural diagram at C in the middle;

[0027] Figure 6 This is a schematic diagram of the assembly structure of a smelting furnace and a material gathering annular seat in a magnesium alloy raw material proportioning device proposed by the present invention;

[0028] Figure 7 A schematic diagram of the positional relationship between a material gathering annular seat and a mixing furnace in a magnesium alloy raw material proportioning device proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of a mixing furnace in a magnesium alloy raw material proportioning device proposed by the present invention;

[0030] Fig. 9 It is a schematic cross-sectional structure diagram of a material gathering annular seat in a magnesium alloy raw material proportioning device proposed by the present invention;

[0031] Fig.10 The present invention is a flowchart of a method for proportioning preparation in a magnesium alloy raw material proportioning device.

[0032] In the figure: 1. base; 2. smelting furnace; 201. feed port; 202. air inlet; 3. lifting ring; 4. magnetic ring; 5. furnace cover; 6. lifting screw; 7. discharge pipe; 8. lifting motor; 9. electromagnetic induction heating coil; 10. control air valve; 11. outer stirring rod; 12. piston rod; 13. mixing furnace; 1301. liquid inlet; 1302. limit slide; 14. material gathering ring seat; 1401. air cavity; 15. control motor; 16. arc mounting seat; 17. reverse transmission gear; 18. sealing ring; 19. control screw; 20. loading lifting seat; 21. electric push rod; 22. limit block; 23. inner stirring rod; 24. transmission inner gear ring; 25. reset spring; 26. filter screen; 27. driving gear. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Example, see Figures 1 to 9A magnesium alloy raw material proportioning device comprises a base 1 and a smelting furnace 2 fixedly connected to the top of the base 1, an arc-shaped mounting seat 16 is fixedly connected to the inner bottom of the smelting furnace 2, and a furnace cover 5 is arranged on the top of the smelting furnace 2. The furnace cover 5 can seal the top openings of the smelting furnace 2 and the mixing furnace 13 to ensure the sealing of the smelting furnace 2 and the mixing furnace 13;

[0037] A transfer port is provided at the center of the arc-shaped mounting seat 16, and a mixing furnace 13 is rotatably connected inside the transfer port. A plurality of aggregate annular seats 14 are fixedly connected to the inner wall of the smelting furnace 2 from top to bottom, and an annular groove is provided on the inner side of the aggregate annular seat 14. An air cavity 1401 connected to the annular groove is provided inside the aggregate annular seat 14 (the aggregate annular seat 14 at the highest level does not need to have an air cavity 1401 and an annular groove), and a sealing ring 18 that fits the outer wall of the mixing furnace 13 is slidably provided inside the annular groove. The mixing furnace 13 A liquid inlet 1301 is provided on the side wall near the sealing ring 18. Furthermore, an opening connected to the air cavity 1401 is provided on the side wall of the smelting furnace 2. A piston rod 12 is slidably arranged inside the air cavity 1401. The piston rod 12 passes through the opening. A support ring that supports the sealing ring 18 is fixedly connected to the inner wall of the annular groove near the air cavity 1401. Furthermore, a magnetic block is fixedly connected to one end of the piston rod 12, and the magnetic block is fixedly connected to the outer wall of the smelting furnace 2 through a reset spring 25.

[0038] Reference Figure 4 It should be noted that: under the elastic force of the return spring 25, the piston rod 12 injects the air inside the air cavity 1401 into the inner side of the annular groove, thereby lifting the sealing ring 18 inside the annular groove, so that the sealing ring 18 moves up to block the liquid inlet 1301, ensuring that the raw metal will not enter the mixing furnace 13 through the liquid inlet 1301 during the smelting process;

[0039] It is worth noting that the support ring can support the sealing ring 18 to prevent the bottom end of the sealing ring 18 from contacting the bottom end of the inner side of the annular groove, thereby ensuring that the piston rod 12 can lift the sealing ring 18 by squeezing the air inside the air cavity 1401.

[0040] The outer wall of the mixing furnace 13 is fixedly connected with an outer stirring rod 11, an inner cavity is provided inside the smelting furnace 2, a control motor 15 is installed inside the inner cavity, the output end of the control motor 15 extends into the mixing furnace 13, a control screw 19 is fixedly connected to the output end of the control motor 15, a material loading and unloading seat 20 is threadedly connected to the surface of the control screw 19, a circumferentially distributed inner stirring rod 23 is fixedly connected to the top of the material loading and unloading seat 20, a storage groove is provided on the side wall of the material loading and unloading seat 20, and a limit assembly is provided inside the storage groove; further, the limit assembly includes an electric push rod 2 installed on the inner wall of the storage groove 1. One end of the electric push rod 21 is fixedly connected to a limit block 22, and a limit slide groove 1302 adapted to the limit block 22 is opened on the inner wall of the mixing furnace 13, and a filter screen 26 is arranged on the material aggregation annular seat 14 located near the lowest point of the side wall of the mixing furnace 13; further, a transmission inner gear ring 24 is fixedly connected to the inner wall of the mixing furnace 13 near the bottom end, and a driving gear 27 is fixedly connected to the surface of the control screw 19, and a reverse transmission gear 17 meshing with the transmission inner gear ring 24 and the driving gear 27 is rotatably arranged at the inner bottom end of the smelting furnace 2, and a discharge pipe 7 is arranged at the inner bottom end of the side wall of the smelting furnace 2.

[0041] It should be noted that: the control motor 15 drives the control screw 19 connected to its output end to rotate clockwise, the control screw 19 drives the driving gear 27 fixedly connected to its surface to rotate clockwise, the driving gear 27 drives the reverse transmission gear 17 meshing therewith to rotate counterclockwise, the reverse transmission gear 17 drives the transmission inner gear ring 24 meshing therewith to rotate counterclockwise, and then drives the mixing furnace 13 to rotate counterclockwise, so that the mixing furnace 13 drives the outer stirring rod 11 on its outer wall to rotate counterclockwise, so as to stir the metal raw materials inside the aggregate annular seat 14.

[0042] It should be noted that the setting of the limit assembly is used to control the formation of a sliding connection between the material loading lifting seat 20 and the mixing furnace 13, and to control the release of the sliding connection between the material loading lifting seat 20 and the mixing furnace 13;

[0043] When the electric push rod 21 is turned on, the electric push rod 21 drives the limit block 22 to move out of the storage slot, and the limit block 22 first contacts the inner wall of the mixing furnace 13. Since the mixing furnace 13 is in a counterclockwise rotation state, when the limit slide groove 1302 on the inner wall of the mixing furnace 13 rotates to align with the limit block 22, under the pushing action of the electric push rod 21, the limit block 22 is inserted into the limit slide groove 1302, realizing the sliding connection function between the loading lifting seat 20 and the mixing furnace 13. At this time, the mixing furnace 13 can drive the loading lifting seat 20 to rotate counterclockwise, and the control screw rod 19 is to rotate clockwise, so that the loading lifting seat 20 can realize the downward movement function;

[0044] When the electric push rod 21 is opened again and drives the limit block 22 to retract into the receiving tank, the sliding connection between the loading lifting seat 20 and the mixing furnace 13 is released. At this time, the loading lifting seat 20 is not limited, so it can rotate clockwise with the control screw 19 to achieve stirring of the liquid metal raw material entering the mixing furnace 13;

[0045] It is worth noting that the descending sequence of the lifting ring 3 and the loading lifting seat 20 is that the lifting ring 3 descends first, and then the loading lifting seat 20 descends to the same position, so as to avoid mixing and smelting the metal raw materials of the same layer at the same time.

[0046] A lifting ring 3 is provided on the outside of the smelting furnace 2, and a nut block is fixedly connected to the outer wall of the lifting ring 3. A lifting screw 6 threadedly connected to the nut block is rotatably connected inside the base 1. A lifting motor 8 connected to the lifting screw 6 is installed at the bottom end of the base 1. An electromagnetic induction heating coil 9 for smelting metal is provided inside the lifting ring 3, and a magnetic attraction ring 4 is fixedly connected to the top of the lifting ring 3.

[0047] It should be noted that: the lifting motor 8 drives the lifting screw 6 to rotate, and then the nut block drives the lifting ring 3 to move downward. When the lifting ring 3 moves down to the material aggregation annular seat 14, the lifting motor 8 stops working and the lifting ring 3 stops moving downward. Under the action of the electromagnetic induction heating coil 9, the metal raw materials inside the material aggregation annular seat 14 can be heated and melted. At the same time, under the action of the outer stirring rod 11, it can be ensured that the metal raw materials piled together can be melted evenly, avoiding the phenomenon of external metal raw materials melting first.

[0048] It should be noted that: the magnetic ring 4 can magnetically attract the magnetic block, thereby driving the piston rod 12 to move away from the sealing ring 18, so that the internal space of the air cavity 1401 increases, and the gas no longer lifts the sealing ring 18, so that the sealing ring 18 drops under the action of its own gravity, so that the liquid inlet 1301 on the side wall of the mixing furnace 13 opens, and the liquid metal raw material formed after smelting inside the aggregate annular seat 14 enters the mixing furnace 13 through the liquid inlet 1301.

[0049] Furthermore, a feed port 201 and an air pumping port 202 are provided on the side wall of the smelting furnace 2 near the top of the material gathering annular seat 14 , and a control air valve 10 is installed inside the air pumping port 202 .

[0050] It should be noted that a sealing plug is provided at the feed port 201, which is used to pour the metal raw materials into the material gathering annular seat 14 inside the smelting furnace 2, and the air injection port 202 cooperates with the control gas valve 10 to facilitate the smelting personnel to inject protective gas (such as argon) into the inside of the smelting furnace 2.

[0051] It should be noted that the surfaces of the structures in the device that are in contact with the metal raw materials are coated with a polytetrafluoroethylene coating. The surface of the polytetrafluoroethylene coating is smooth, which reduces friction resistance and avoids adhesion of the metal raw materials.

[0052] Reference Fig.10 A magnesium alloy raw material proportioning device provides a proportioning preparation method, comprising the following steps:

[0053] S1. Weighing and proportioning: using an electronic scale to weigh and proportion the metal powder required for the magnesium-aluminum alloy;

[0054] S2, separate smelting: weigh the metal powders, put the ones with similar smelting temperatures together, and place them on the gathering ring seats 14 at different positions through the feed port 201 on the side wall of the smelting furnace 2, then turn on the lifting motor 8 to drive the lifting screw 6 to rotate, so that the nut block drives the lifting ring 3 to move from top to bottom, and the metal powders with different smelting temperatures are smelted independently;

[0055] S3, raw material mixing: when the lifting ring 3 moves downward, the loading lifting seat 20 inside the mixing furnace 13 will move downward accordingly, so that the raw material metals melted in each layer flow into the mixing furnace 13, and the raw material metals are fully mixed under the rotation of the inner stirring rod 23;

[0056] S4, slag removal: open the furnace cover 5 and add a slag remover (generally a sodium-free flux) into the mixing furnace 13 to make the slag loose and easy to clean, then move the loading lift 20 down to the bottom of the mixing furnace 13, so that the mixed liquid raw metal passes through the filter screen 26 and flows into the smelting furnace 2. At this time, the slag cannot pass through due to the blocking effect of the filter screen 26, and then move the loading lift 20 up to the top layer of the mixing furnace 13, so as to carry the slag to the top layer of the mixing furnace 13, which facilitates the cleaning of the slag.

[0057] When the present invention is used, the metal powders required for the magnesium-aluminum alloy are weighed and proportioned using an electronic scale, and then the metal powders with similar melting temperatures are placed together and poured into the material gathering annular seat 14 inside the smelting furnace 2 through the feed port 201. The metal powders with different melting temperatures are placed in the material gathering annular seats 14 at different layers, and then the sealing plug is inserted into the feed port 201, and then the control gas valve 10 inside the pumping port 202 is opened, and the inside of the smelting furnace 2 is first vacuumed, and then a protective gas (such as argon) is injected into the smelting furnace 2;

[0058] Then, the control motor 15 is turned on, and the control motor 15 drives the control screw 19 connected to its output end to rotate clockwise, and the control screw 19 drives the driving gear 27 fixedly connected to its surface to rotate clockwise, and the driving gear 27 drives the reverse transmission gear 17 meshing therewith to rotate counterclockwise, and the reverse transmission gear 17 drives the transmission inner gear ring 24 meshing therewith to rotate counterclockwise, thereby driving the mixing furnace 13 to rotate counterclockwise, so that the mixing furnace 13 drives the outer stirring rod 11 on its outer side wall to rotate counterclockwise, which can stir the metal raw materials inside the aggregate annular seat 14, and at the same time, the lifting ring 3 is at the aggregate annular seat 14 at the highest level, and the lifting ring 3 is turned on. The electromagnetic induction heating coil 9 on the inner side first performs electromagnetic induction heating on the metal raw materials in the highest layer of the material gathering annular seat 14 to realize the heating and smelting function of the metal raw materials. At the same time, under the stirring action of the outer stirring rod 11, it is ensured that the metal raw materials in the same layer can be heated and smelted evenly, avoiding the phenomenon that the raw materials accumulated on the outside are heated and smelted first, and further avoiding the phenomenon that a small amount of gasification of the first smelted metal occurs (the smelted metal raw materials enter the mixing furnace 13 through the liquid inlet 1301, and the liquid inlet 1301 is set to be large enough and large in number, so that the slag generated by the smelting can enter the inner side of the mixing furnace 13 through the liquid inlet 1301);

[0059] Afterwards, under the control of the external controller, the lifting motor 8 is started, and the lifting motor 8 drives the lifting screw 6 to rotate, so that the nut block drives the lifting ring 3 to move down to the next layer of the gathering annular seat 14 (at this time, the loading lifting seat 20 inside the mixing furnace 13 does not move down), and the electromagnetic induction heating coil 9 is used again to heat and melt the metal raw materials of the next layer (at this time, the magnetic ring 4 at the top of the lifting ring 3 and the magnetic block at one end of the piston rod 12 are in a staggered state). After the smelting of the metal raw materials of the next layer is completed, the external controller controls the electric push rod 21 to work. When the electric push rod 21 drives the limit block 22 to move out of the storage groove, the limit block 22 first contacts the mixing furnace 1 3, since the mixing furnace 13 is in a counterclockwise rotation state, when the limiting slide groove 1302 on the inner wall of the mixing furnace 13 rotates to align with the limiting block 22, under the pushing action of the electric push rod 21, the limiting block 22 is inserted into the limiting slide groove 1302, so as to realize the sliding connection function between the loading lifting seat 20 and the mixing furnace 13. At this time, the mixing furnace 13 can drive the loading lifting seat 20 to rotate counterclockwise, and the control screw rod 19 is to rotate clockwise, so that the loading lifting seat 20 can realize the descending function. When the loading lifting seat 20 descends to the next layer of the aggregate annular seat 14, the electric push rod 21 drives the limiting block 22 to retract to the inside of the storage groove and align with the limiting block. The card slot is separated, and the sliding connection between the loading lifting seat 20 and the mixing furnace 13 is released. At this time, the loading lifting seat 20 is not limited, so it can rotate clockwise with the control screw 19 to achieve stirring of the liquid metal raw material entering the mixing furnace 13 (at this time, the metal raw material after the previous layer of smelting follows the loading lifting seat 20 to move to the next layer of the aggregation ring seat 14), and the lifting motor 8 is used to control the lifting ring 3 to descend to the third layer of the aggregation ring seat 14. At this time, the magnetic attraction ring 4 at the top of the lifting ring 3 is facing the magnetic attraction block at the upper layer (second layer) aggregation ring seat 14. At this time, the magnetic attraction ring 4 can magnetically attract the magnetic attraction block, thereby driving the piston rod 12 away from the sealing ring 18 moves, so that the internal space of the air cavity 1401 increases, and then the gas no longer lifts up the sealing ring 18, so that the sealing ring 18 drops under its own gravity, so that the liquid inlet 1301 on the side wall of the mixing furnace 13 is opened, so that the liquid metal raw material formed after smelting inside the annular seat 14 enters the mixing furnace 13 through the liquid inlet 1301 (because the protective gas was previously injected into the smelting furnace 2, under the extrusion of the protective gas, the liquid metal formed by smelting can enter the mixing furnace 13 through the liquid inlet 1301), and under the rotation of the inner stirring rod 23 driven by the loading lifting seat 20, the stirring and mixing function of the liquid raw metal can be realized;

[0060] By repeating the above operation, the function of independent smelting of each layer of raw metal (i.e. raw metal with different smelting temperatures) can be realized, and the automatic mixing function of the raw metal after smelting can be automatically realized, so as to avoid the phenomenon of large amount of gasification of metal raw materials with low smelting temperature, ensure the accuracy of the internal component ratio of the subsequent finished magnesium-aluminum alloy, and improve the quality of the magnesium-aluminum alloy;

[0061] After all the metal raw materials have entered the mixing furnace 13 and are evenly mixed under the action of the inner stirring rod 23, the furnace cover 5 is opened and the slag remover is poured into the liquid metal raw materials in the mixing furnace 13, so that the slag generated during the smelting process is loose and easy to clean. After that, the electric push rod 21 is used again to make the limit block 22 and the limit slide groove 1302 slidingly connected, establish a sliding connection between the loading lifting seat 20 and the mixing furnace 13, so that the loading lifting seat 20 continues to descend, so that the mixed liquid metal raw materials pass through the filter screen 26 into the smelting furnace 2, and the slag is blocked by the filter screen 26 and remains on the loading lifting seat 20. After that, the control motor 15 is rotated counterclockwise, and then the control screw rod 19 is rotated counterclockwise, so that the loading lifting seat 20 carries the slag upward, so that the loading lifting seat 20 carries the slag to the opening at the top of the mixing furnace 13, which is convenient for the smelting personnel to clean up, and the liquid metal in the smelting furnace 2 can be discharged through the discharge pipe 7 for use.

[0062] 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 magnesium alloy raw material proportioning device, comprising a base (1) and a smelting furnace (2) fixedly connected to the top of the base (1), characterized in that: The bottom inner end of the smelting furnace (2) is fixedly connected with an arc-shaped mounting seat (16), the top of the smelting furnace (2) is provided with a furnace cover (5), a transfer interface is provided at the center of the arc-shaped mounting seat (16), a mixing furnace (13) is rotatably connected inside the transfer interface, a plurality of material-gathering annular seats (14) are fixedly connected from top to bottom to the inner wall of the smelting furnace (2), an annular groove is provided on the inner side of the material-gathering annular seat (14), an air cavity (1401) connected with the annular groove is provided inside the material-gathering annular seat (14), a sealing ring (18) which is slidably provided on the inner side of the annular groove and is fitted with the outer wall of the mixing furnace (13), and the side wall of the mixing furnace (13) is close to the sealing ring (18) A liquid inlet (1301) is provided at the mixing furnace (13); an outer stirring rod (11) is fixedly connected to the outer wall of the mixing furnace (13); an inner cavity is provided inside the smelting furnace (2); a control motor (15) is installed inside the inner cavity; an output end of the control motor (15) extends into the mixing furnace (13); a control screw (19) is fixedly connected to the output end of the control motor (15); a material loading and lifting seat (20) is threadedly connected to the surface of the control screw (19); a top end of the material loading and lifting seat (20) is fixedly connected to inner stirring rods (23) distributed in a circle; a storage groove is provided on the side wall of the material loading and lifting seat (20); a limit position assembly is provided inside the storage groove; A lifting ring (3) is arranged on the outside of the smelting furnace (2), and a nut block is fixedly connected to the outer wall of the lifting ring (3). A lifting screw (6) threadedly connected to the nut block is rotatably connected inside the base (1). A lifting motor (8) connected to the lifting screw (6) is installed at the bottom end of the base (1). An electromagnetic induction heating coil (9) for smelting metal is arranged inside the lifting ring (3), and a magnetic attraction ring (4) is fixedly connected to the top of the lifting ring (3).

2. A magnesium alloy raw material proportioning device according to claim 1, characterized in that: A feed inlet (201) and an air pumping port (202) are provided on the side wall of the smelting furnace (2) near the top of the material gathering annular seat (14), and a control air valve (10) is installed inside the air pumping port (202).

3. A magnesium alloy raw material proportioning device according to claim 1, characterized in that: The side wall of the smelting furnace (2) is provided with an opening connected to the air cavity (1401), and a piston rod (12) is slidably arranged inside the air cavity (1401). The piston rod (12) is arranged to pass through the opening, and a support ring is fixedly connected to the inner wall of the annular groove near the air cavity (1401) to support the sealing ring (18).

4. A magnesium alloy raw material proportioning device according to claim 3, characterized in that: One end of the piston rod (12) is fixedly connected to a magnetic block, and the magnetic block is fixedly connected to the outer wall of the smelting furnace (2) via a return spring (25).

5. A magnesium alloy raw material proportioning device according to claim 1, characterized in that: The limit assembly comprises an electric push rod (21) installed on the inner wall of the storage groove, one end of the electric push rod (21) is fixedly connected to a limit block (22), the inner wall of the mixing furnace (13) is provided with a limit slide groove (1302) adapted to the limit block (22), and a filter screen (26) is provided on the material gathering annular seat (14) located near the lowest point of the side wall of the mixing furnace (13).

6. A magnesium alloy raw material proportioning device according to claim 1, characterized in that: A transmission inner gear ring (24) is fixedly connected to the inner wall of the mixing furnace (13) near the bottom end, a driving gear (27) is fixedly connected to the surface of the control screw (19), a reverse transmission gear (17) is rotatably arranged at the inner bottom end of the smelting furnace (2) and meshed with the transmission inner gear ring (24) and the driving gear (27), and a discharge pipe (7) is arranged at the inner bottom end of the side wall of the smelting furnace (2).

7. A method for preparing a magnesium alloy raw material proportioning device according to any one of claims 1 to 6, comprising the following steps: S1. Weighing and proportioning: using an electronic scale to weigh and proportion the metal powder required for the magnesium-aluminum alloy; S2, separate smelting: weigh the metal powders, put them together with similar smelting temperatures, and place them on the material gathering annular seats (14) at different positions through the feed port (201) on the side wall of the smelting furnace, then turn on the lifting motor (8) to drive the lifting screw (6) to rotate, so that the nut block drives the lifting ring (3) to move from top to bottom, and the metal powders with different smelting temperatures are smelted independently; S3, raw material mixing: when the lifting ring (3) moves downward, the loading lifting seat (20) inside the mixing furnace (13) will move downward accordingly, so that the raw material metals melted in each layer flow into the mixing furnace (13), and the raw material metals are fully mixed under the rotation of the inner stirring rod (23); S4, slag removal: open the furnace cover (5) and add a slag remover into the mixing furnace (13) to loosen the slag and make it easy to clean. Then, move the loading lift seat (20) down to the bottom of the mixing furnace (13) so that the mixed liquid raw metal passes through the filter screen (26) and flows into the smelting furnace (2). At this time, the slag cannot pass through due to the blocking effect of the filter screen (26). Then, move the loading lift seat (20) up to the top layer of the mixing furnace (13), thereby carrying the slag to the top layer of the mixing furnace (13), which facilitates the cleaning of the slag.

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