A rotary suspension clamp body aluminum water casting device and casting process

Abstract

This invention discloses a rotary suspension clamp body aluminum molten casting device and casting process, relating to the field of metal casting technology, including a molten metal heat preservation device, a solution pretreatment mechanism, and a low-pressure casting mechanism. This invention achieves efficient pretreatment of the molten metal by setting a rotating central rod and its auxiliary components inside the solution vessel. Before conveying, the coordinated rotation of the corrugated screen and ceramic foam stack effectively adsorbs and filters oxide slag on the surface of the molten aluminum, ensuring the purity of the molten metal from the source. Simultaneously, the turbulence generated by the stirring plates breaks the static state of the molten metal, promoting the floating and separation of internal inclusions. Subsequently, the inclined blades and spiral guide at the bottom gather the molten metal upwards and towards the center, forming a stable, air-free laminar flow state, reducing the gas content in the molten metal and preventing the re-entry of gas during conveying.

Description

Technical Field

[0001] This invention relates to the field of metal casting technology, and in particular to a rotary suspension clamp body aluminum molten casting device and casting process. Background Technology

[0002] For example, patent CN120421490B, entitled "A Dual-Action Serial Circulation High-Purity Aluminum Melt Low-Pressure Casting Device and Preparation Method," describes a method for purifying and refining aluminum alloy melt within a gas-fired furnace, and for casting complex metal products in a low-pressure casting furnace. This invention eliminates the need for mechanical transfer between the gas-fired furnace and the low-pressure casting furnace. Dynamic replenishment of the aluminum alloy melt from the gas-fired furnace to the low-pressure casting furnace is achieved through melt level monitoring and the opening and closing of an automatic tilting device and dual-furnace stop plugs. This dynamic replenishment results in minimal surface fluctuations of the aluminum alloy melt within the low-pressure casting furnace, preventing significant turbulence, gas entrapment, and slag inclusions. Furthermore, the replenished aluminum alloy melt exhibits high quality and low oxide inclusion content, significantly improving the metallurgical quality of the melt.

[0003] In the low-pressure casting process of aluminum alloys, molten metal often faces the problems of high slag content and insufficient purity. Moreover, during the transportation and filling process, molten metal is prone to air entrapment and flow turbulence, resulting in defects such as porosity in the castings. In addition, for castings with thick walls or complex structures, such as rotary suspension clamps, shrinkage porosity and shrinkage cavities are prone to occur during solidification, resulting in low product density and difficulty in meeting high-standard usage requirements. Therefore, this application provides a rotary suspension clamp body aluminum molten metal casting device and casting process to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this application is to provide a rotary suspension clamp body aluminum molten casting device and casting process, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a rotary suspension clamp body aluminum molten casting device, comprising:

[0006] A molten metal insulation device, wherein the molten metal insulation device has an internal core cavity shell for filling with inert gas to keep the molten metal warm;

[0007] The solution pretreatment mechanism includes a treatment component for receiving and discharging a metal solution, a pneumatic control component for pressurizing the inside of the treatment component to facilitate the discharge of the metal solution, and a solution treatment component for rotating the metal solution to remove impurities.

[0008] A low-pressure casting mechanism includes a housing sealing assembly and a guiding assembly. The housing sealing assembly is used to seal the pressurized gas, and the guiding assembly is used to repressurize the molten metal to facilitate casting. The housing sealing assembly is connected to the processing assembly via a solution conduit.

[0009] The air pressure control component includes a support frame, a guide airflow shell, a second air guide tube, and an air guide cone.

[0010] The support frame is suspended in the middle of the core cavity shell. A limiting groove is formed on the inner wall of the support frame. The airflow guide shell is embedded in the middle of the upper end of the support frame. The second airflow guide tube is disposed between the airflow guide shell and the external inert gas guide tube. The airflow guide cone is disposed at the bottom of the second airflow guide tube to guide the gas discharge direction.

[0011] The solution treatment assembly includes a central rod, which is rotatably mounted in the middle of the inner cavity of the support frame via a bearing. The outer periphery of the central rod is provided with a purification assembly, an agitation assembly, and a laminar flow assembly from top to bottom.

[0012] The impurity removal assembly includes, from top to bottom, a top sealing sheet, a ceramic foam stack, and a corrugated screen sheet, which are sequentially fitted around the outer periphery of the central rod.

[0013] The ceramic foam stack is located between the top sealing plate and the corrugated screen plate, and the cross-section of the corrugated screen plate is wavy. The surface of the ceramic foam stack is adapted to and fits the wavy contour of the corrugated screen plate, and is used to stir the molten metal and adsorb impurities when it rotates with the central rod. The ceramic foam stack is composed of multiple layers spliced ​​together, and has several hollows inside for adsorbing metal impurities.

[0014] The agitation assembly includes multiple agitators, which are equally spaced around the outer periphery of the central rod. The cross-section of each agitator is wavy, and a flow guide groove is provided on its surface. The flow guide groove is used to guide the molten metal to flow up and down as the agitator rotates.

[0015] The laminar flow assembly includes a mounting column and a spiral guide. The mounting column is connected to the bottom of the central rod, and the spiral guide is spirally coiled around the outer periphery of the mounting column.

[0016] The outer wall of the mounting column is provided with multiple inclined blades. The inclined blades are configured to guide the molten metal to generate an upward axial flow when rotating with the central rod. The spiral blades of the spiral guide extend inclinedly toward the axis of the mounting column to generate a centripetal thrust during rotation, thereby guiding the molten metal to converge toward the central axis.

[0017] The processing component includes a solution vessel, which carries a metal solution and is embedded inside a limiting groove. An inlet pipe extends from the upper part of the inner cavity of the solution vessel and is connected to an external control connector. An outlet pipe is provided on the inner wall of the solution vessel, which guides the metal solution to be discharged according to the internal air pressure of the solution vessel.

[0018] The inlet end of the outlet pipe is located below the spiral guide, and the outlet end of the outlet pipe is higher than the top seal plate and communicates with the solution conduit.

[0019] The low-pressure casting mechanism includes an airflow chamber and a solution chamber. The airflow chamber is fixed to the inner wall of the molten metal insulation device. The solution chamber is located at the lower end of the airflow chamber. One end of the solution conduit extends into the solution chamber. The airflow chamber and the solution chamber are separated by a partition. An airflow conduit connects the airflow chamber to an external inert gas pipe.

[0020] The guiding component includes a main flow tube and an inner tube. The main flow tube passes through the airflow chamber and communicates with the external mold. The inner tube is sleeved at the bottom of the main flow tube. An airflow shroud is sleeved around the outer periphery of the inner tube. A spacer tube extending into the inner tube is provided on the inner wall of the airflow shroud. A liquid suction tube extending into the main flow tube is provided on the inner wall of the spacer tube. The liquid suction tube is used to guide the molten metal into the main flow tube.

[0021] The upper end of the airflow shroud is provided with a ring cover, and the inside of the ring cover is provided with a second ceramic foam ring. The second ceramic foam ring is configured to prevent molten metal from entering the inside of the ring cover through the airflow shroud.

[0022] The ring cover is fixedly installed on the outer surface of the inner tube, and the outer side of the ring cover is connected to a first air guide tube, which is connected to an external high-pressure inert gas tube.

[0023] A first gap is defined between the spacer tube and the inner tube, and the first gap is configured to guide the inert gas inside the airflow cover into the cavity between the spacer tube and the suction tube.

[0024] A second gap is defined between the suction tube and the spacer tube, and the second gap is configured to guide the gas in the cavity into the main flow tube.

[0025] The bottom of the spacer tube and the airflow cover are respectively provided with a drain hole and a leak hole. The bottom of the inner cavity of the airflow cover is provided with a first ceramic foam ring, which is used to reduce the leakage rate of gas inside the airflow cover cavity.

[0026] The present invention also provides a process for casting molten aluminum into a rotary suspension clamp body, the process comprising the following steps:

[0027] S1. Metal liquid pretreatment: The metal liquid is fed into the processing component through an external control nozzle. The solution processing component is started to rotate. The impurity removal component adsorbs impurities on the surface of the metal liquid. The laminar flow component guides the metal liquid to flow upward. At the same time, the stirring component agitates the metal liquid.

[0028] S2. First-stage pressurized conveying: After the solution pretreatment is completed, the pressure control component works with the processing component to form a sealed cavity and inject inert gas into it. As the pressure increases, the molten metal is guided into the solution conduit.

[0029] S3. Low-pressure casting: The molten metal is introduced into the shell sealing assembly through the solution conduit. When casting is required, gas is filled into the shell sealing assembly to increase its pressure. The molten metal is introduced into the mold through the guide assembly. When the pressure of the shell sealing assembly is stable, the guide assembly applies a pressure higher than the pressure inside the shell sealing assembly. The molten metal is filled into the gap of the module by the pressure impact.

[0030] In summary, the technical effects and advantages of this invention are as follows:

[0031] 1. This invention achieves efficient pretreatment of molten metal by setting a rotating central rod and its auxiliary components inside the solution vessel. Before conveying, the coordinated rotation of the corrugated screen and the ceramic foam stack can effectively adsorb and filter the oxide slag on the surface of the molten aluminum, ensuring the purity of the molten metal from the source. At the same time, the turbulence generated by the stirring plate breaks the static state of the molten metal, promoting the floating and separation of internal inclusions. Subsequently, the inclined blades and spiral guides at the bottom gather the molten metal upward and towards the center, forming a stable, air-free laminar flow state, reducing the gas content in the molten metal, and also preventing the re-entry of gas during the conveying process.

[0032] 2. In the casting stage, the invention generates a first-level pressure through the outer shell sealing component to ensure the smooth filling of the mold with molten metal, avoiding splashing and oxidation caused by turbulence. In the pressurization and feeding stage, the guiding component applies a secondary gas pressure impact higher than that inside the outer shell sealing component. This high-pressure gas acts precisely on the solidifying molten metal through a complex gap structure. The secondary pressurization mechanism can effectively eliminate micro-pores inside the casting and force the molten metal to fully fill the fine gaps in the mold, thereby solving common shrinkage and porosity defects in casting and ensuring the integrity and mechanical strength of the suspension clamp body structure. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A three-dimensional structural diagram of the aluminum molten metal casting device for the rotary suspension clamp body;

[0035] Figure 2 A schematic diagram of the internal three-dimensional structure of the aluminum molten metal casting device for the rotary suspension clamp body;

[0036] Figure 3 A three-dimensional sectional view of the connection structure of the aluminum molten casting device for the rotary suspension clamp body;

[0037] Figure 4 This is a schematic diagram of the three-dimensional connection structure of the solution pretreatment mechanism;

[0038] Figure 5 This is a schematic diagram of a partial three-dimensional connection structure of the solution pretreatment mechanism;

[0039] Figure 6 This is a schematic diagram of the three-dimensional connection structure between the pressure control component and the solution treatment component;

[0040] Figure 7 This is a schematic diagram of the three-dimensional connection structure of the solution processing component;

[0041] Figure 8 This is a schematic diagram of a partial three-dimensional connection structure of the solution treatment component;

[0042] Figure 9 This is a three-dimensional cross-sectional view of the connection structure of the pneumatic control component;

[0043] Figure 10 This is a schematic diagram of the three-dimensional connection structure of the solution processing component;

[0044] Figure 11 This is a schematic diagram of a partial three-dimensional connection structure of the solution treatment component;

[0045] Figure 12 An exploded view of the three-dimensional connection structure of the solution treatment component;

[0046] Figure 13 A schematic diagram of the three-dimensional connection structure of ceramic foam sheets;

[0047] Figure 14 This is a schematic diagram of the three-dimensional connection structure of the stirring plate;

[0048] Figure 15 A schematic diagram of the three-dimensional connection structure of the spiral guide;

[0049] Figure 16 A schematic diagram of the three-dimensional connection structure between the spiral guide and the inclined blade;

[0050] Figure 17 A schematic diagram of the three-dimensional connection structure of the processing components;

[0051] Figure 18 A schematic diagram of the three-dimensional connection structure of the low-pressure casting mechanism;

[0052] Figure 19 A three-dimensional sectional view of the connection structure of the low-pressure casting mechanism;

[0053] Figure 20 A schematic diagram of the three-dimensional connection structure of the housing sealing assembly;

[0054] Figure 21 A schematic diagram of the three-dimensional connection structure of the guiding components;

[0055] Figure 22 An exploded view of the 3D connection structure of the guiding components;

[0056] Figure 23 A sectional view of the three-dimensional connection structure of the guiding components;

[0057] Figure 24 A planar sectional view of the guiding component;

[0058] Figure 25 A schematic diagram of the three-dimensional connection structure between the suction tube and the airflow cover;

[0059] Figure 26 This is a partial three-dimensional connection structure cross-sectional view of the guiding components.

[0060] In the diagram: 1. Molten metal insulation device; 2. Low-pressure casting mechanism; 21. Guiding component; 211. Main flow pipe; 212. First air guide pipe; 213. Suction pipe; 214. Airflow outer cover; 215. Ring cover; 216. Embedded tube; 217. First ceramic foam ring; 218. Spacing tube; 219. Second ceramic foam ring; 2111. Leakage hole; 2112. Drainage hole; 22. Outer shell sealing component; 221. Airflow chamber; 222. Partition plate; 223. Solution chamber; 224. Airflow conduit; 3. Solution pretreatment mechanism; 31. Air pressure control. Components; 311, Support frame; 312, Guide airflow shell; 313, Second air guide pipe; 314, Limiting groove; 315, Air guide cone; 32, Solution treatment component; 320, Hollowed-out; 321, Center rod; 322, Corrugated screen; 323, Stirring plate; 324, Spiral guide; 325, Ceramic foam stack; 326, Top sealing plate; 327, Flow guide groove; 328, Mounting column; 329, Inclined blade; 33, Treatment component; 331, Solution vessel; 332, Inlet pipe; 333, Outlet pipe; 4, Solution conduit; 5, Core cavity shell. Detailed Implementation

[0061] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] Example 1, Reference Figures 1 to 26 The rotary suspension clamp body aluminum molten casting device and casting process shown include a molten metal heat preservation device 1, a solution pretreatment mechanism 3, and a low-pressure casting mechanism 2.

[0063] The molten metal insulation device 1 serves as the core of the entire system for smelting and storage, and it contains an inner core shell 5. This inner core shell 5 is made of high-temperature resistant ceramic material, and its internal space is used to fill inert gases such as argon or nitrogen, thereby forming a gas phase insulation layer during the storage of molten metal, effectively reducing heat loss and preventing the aluminum liquid from oxidizing.

[0064] The solution pretreatment mechanism 3 is located above or to the side of the molten metal insulation device 1, and is used to degas, remove slag, and adjust the flow state of the molten metal. The low-pressure casting mechanism 2 is located at the bottom of the device and is connected to the solution pretreatment mechanism 3 through the solution conduit 4, and is used to inject the treated clean molten metal into the mold.

[0065] The molten metal is fed into the solution vessel 331 through the inlet pipe 332. The central rod 321 is started to rotate, and the corrugated screen 322 and the ceramic foam stack 325 follow the rotation, adsorbing and filtering the oxide slag on the surface. The stirring plate 323 generates turbulence to promote the floating of inclusions. Then, the inclined blade 329 at the bottom and the spiral guide 324 gather the molten metal upward and towards the center to form a clean, air-free laminar flow.

[0066] After pretreatment, the pressure control component 31 injects inert gas into the top of the solution vessel 331 through the second gas guide pipe 313. As the pressure inside the vessel increases, it overcomes gravity and forces the clean molten metal through the outlet pipe 333 into the solution conduit 4, and finally into the solution chamber 223 of the low-pressure casting mechanism for temporary storage.

[0067] When casting is required, the airflow chamber 221 of the outer casing sealing assembly 22 is inflated, generating a first-stage pressure that pushes the molten metal upward along the main flow pipe 211, allowing it to smoothly enter the mold cavity. When the internal air pressure of the outer casing sealing assembly 22 reaches a preset value and stabilizes, the guide assembly 21 applies a higher air pressure than that inside the outer casing sealing assembly through the first air guide pipe 212. This high-pressure gas enters the main flow pipe 211 through a complex gap structure, applying a secondary air pressure impact to the solidifying molten metal. This not only eliminates porosity inside the casting but also forces the molten metal to fill the fine gaps in the mold, ensuring high density and surface quality of the suspension clamp body.

[0068] Example 2: This example focuses on the specific structure of the solution pretreatment mechanism 3.

[0069] The solution pretreatment unit 3 includes a treatment component 33, a pressure control component 31, and a solution treatment component 32.

[0070] The pneumatic control component 31 mainly includes a support frame 311 suspended in the middle of the core cavity shell 5. A limiting groove 314 is opened on the inner wall of the support frame 311. A guide airflow shell 312 is embedded in the middle of the upper end of the support frame 311. The shell is connected to an external inert gas source through a second air guide pipe 313. A guide cone 315 is provided at the bottom of the second air guide pipe 313. Its function is to guide the input inert gas evenly to the surrounding area and avoid the airflow directly impacting the liquid surface and causing splashing.

[0071] The core of the processing component 33 is a solution vessel 331, which carries the metal solution and is embedded in the limiting groove 314 of the support frame 311. The limiting groove achieves positioning and sealing. The upper part of the inner cavity of the solution vessel 331 has an inlet pipe 332 that connects to the control interface of the external smelting furnace. The bottom or side wall of the solution vessel 331 is provided with an outlet pipe 333. When the gas pressure control component 31 injects inert gas into the top space of the solution vessel 331, the gas pressure inside the vessel increases, and the metal solution is forced out through the outlet pipe 333.

[0072] The solution treatment assembly 32 includes a central rod 321 that is rotatably mounted in the middle of the inner cavity of the support frame 311 via a bearing. The central rod 321 is driven to rotate by an external motor, and its outer periphery is provided with a purification assembly, an agitation assembly, and a laminar flow assembly from top to bottom.

[0073] The impurity removal component includes a top sealing plate 326, a ceramic foam stack 325, and a corrugated screen 322, which are sequentially fitted around the outer periphery of the central rod 321 from top to bottom. The ceramic foam stack 325 is located between the top sealing plate and the corrugated screen 322, and its surface is adapted to and fits the corrugated contour of the corrugated screen 322. The ceramic foam stack 325 is composed of multiple layers and has a large number of hollows 320 inside. When the central rod rotates, the corrugated screen 322 stirs the liquid surface, and the ceramic foam stack 325 uses its porous structure to physically adsorb the oxide inclusions in the aluminum liquid.

[0074] The agitation assembly includes multiple agitator blades 323 spaced equally around the outer periphery of the central rod 321. The agitator blades 323 have a wavy cross-section and flow guide grooves 327 on their surfaces. This structure generates complex turbulence when rotating, breaking the static state of the molten metal and promoting the floating of impurities to contact the impurity removal assembly.

[0075] The laminar flow assembly includes a mounting column 328 connected to the bottom of the central rod 321 and a spiral guide 324 spirally coiled around the outer periphery of the mounting column. The outer wall of the mounting column 328 is provided with multiple inclined blades 329. When the assembly rotates, the inclined blades 329 generate an upward axial thrust, guiding the molten metal to flow upward. At the same time, the blades of the spiral guide 324 extend inclined towards the axis, generating a centripetal thrust, which gathers the molten metal from the periphery to the center, forming a stable laminar flow and preventing air entrapment.

[0076] It is worth noting that the precise coordination between the pressure control component 31 and the processing component 33 ensures the stability and purity of the molten metal transport process. The pressure control component 31 uses the guide cone 315 to uniformly guide the inert gas, preventing the airflow from directly impacting the liquid surface and causing splashing and oxidation. Simultaneously, the solution vessel 331 is embedded in the limiting groove 314 of the support frame 311, forming a reliable sealed cavity. This ensures that the pressure inside the vessel rises steadily when inert gas is injected, allowing the clean molten metal to be smoothly expelled through the outlet pipe 333, effectively preventing the air entrapment and pressure fluctuation problems that easily occur during traditional gravity casting or ordinary pumping.

[0077] Furthermore, the solution treatment component 32 significantly improves the impurity removal effect and flow quality of the molten metal through its unique rotating layered design. The impurity removal component utilizes the agitation of the wave screen plate 322 and the porous adsorption characteristics of the ceramic foam stack 325 to efficiently remove oxide inclusions from the surface of the molten aluminum. The agitation component generates turbulence through the agitation plate 323 and its guide channel 327, promoting the upward floating of internal impurities. Meanwhile, the laminar flow component at the bottom utilizes the guiding effect of the inclined blade plate 329 and the spiral guide 324 to transform the originally turbulent molten metal into a stable laminar flow that rises and converges towards the center, eliminating the hidden danger of pores inside the molten metal and ensuring the stability of the filling process. This greatly improves the internal density and mechanical properties of the rotary suspension clamp body.

[0078] Example 3: This example provides a further technical solution for the low-pressure casting mechanism 2.

[0079] The low-pressure casting mechanism 2 includes a housing sealing assembly 22 and a guide assembly 21.

[0080] The outer casing sealing assembly 22 includes an airflow chamber 221 fixed to the inner wall of the molten metal insulation device 1, and a solution chamber 223 for storing molten metal at its lower end. The two are separated by a partition 222. The airflow chamber 221 is connected to an external air source through an airflow duct 224. When casting is performed, the airflow chamber 221 is filled with air and pressurized to compress the molten metal in the solution chamber 223.

[0081] The guide assembly 21 adopts a unique multi-layer sleeve gas-assisted structure, including a main flow tube 211, an inner tube 216, an airflow outer cover 214, a spacer tube 218, and a suction tube 213.

[0082] The main flow tube 211 passes through the airflow chamber 221 and communicates with the external mold. The inner tube 216 is fitted at the bottom of the main flow tube, and the outer circumference is fitted with an airflow cover 214. The inner wall of the airflow cover 214 is provided with a spacer tube 218 extending into the inner tube, and the spacer tube is provided with a suction tube 213 extending into the main flow tube.

[0083] Gas path logic: The outer side of the ring cover 215 is connected to the first gas guide tube 212, which is connected to the external high-pressure inert gas tube. After the inert gas enters, it passes through the first gap between the spacer tube 218 and the inner tube 216, enters the cavity between the spacer tube and the suction tube, and finally enters the main flow tube 211 through the second gap between the suction tube 213 and the spacer tube.

[0084] Anti-backflow structure: A ring cover 215 is provided at the upper end of the airflow cover 214, and a second ceramic foam ring 219 is installed inside to prevent molten metal from backflowing into the gas pipe. A first ceramic foam ring 217 is provided at the bottom of the airflow cover to reduce the gas leakage rate and play a buffer sealing role. At the same time, the spacer tube and the bottom of the airflow cover are respectively provided with a drain hole 2112 and a leak hole 2111 to allow a small amount of infiltrated molten metal to flow back and prevent gas path blockage. Moreover, the second ceramic foam ring 219 and the first ceramic foam ring 217 are both existing technologies, and when the pressure inside the first gap increases, the molten metal can flow out through the ceramic foam ring.

[0085] It is worth noting that, through the synergistic effect of the outer shell sealing assembly 22 and the guiding assembly 21, a combination of low-pressure filling and high-pressure feeding is achieved. The outer shell sealing assembly 22 utilizes the base pressure provided by the airflow chamber 221 to ensure that the molten metal rises steadily in the solution chamber 223 and initially fills the mold. On this basis, the guiding assembly 21 introduces high-pressure inert gas through the first air guide tube 212. The gas passes through the first gap between the spacer tube 218 and the inner tube 216, and the second gap between the spacer tube and the suction tube 213, and finally acts precisely on the molten metal in the main flow tube 211. The unique multi-stage air path design enables the device to apply a secondary air pressure higher than that inside the outer shell sealing assembly 22 in the later stage of filling, which produces a strong impact and feeding effect on the solidifying molten metal, effectively eliminating shrinkage and porosity inside the casting, and significantly improving the density of the suspension clamp body.

[0086] Furthermore, by setting an airflow cover 214 and a multi-sleeve structure around the outer periphery of the embedded tube 216, and cooperating with the second ceramic foam ring 219 inside the ring cover 215, the path of molten metal backflow into the gas pipe is effectively blocked. At the same time, the first ceramic foam ring 217 at the bottom plays a buffer sealing role, reducing the gas leakage rate. The opening of the drain hole 2112 and the leakage hole 2111, combined with the air permeability of the ceramic foam ring, allows a small amount of molten metal that has seeped in to flow back smoothly when the pressure changes, preventing gas path blockage and avoiding equipment failure caused by molten metal solidification blocking the pipe.

[0087] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary suspension clamp body aluminum water pouring casting device characterized by, include: A molten metal insulation device (1) is provided with an inner core cavity shell (5) for filling inert gas to keep the molten metal warm. The solution pretreatment mechanism (3) includes a treatment component (33) for receiving and discharging the metal solution, a pneumatic control component (31) for pressurizing the inside of the treatment component (33) to facilitate the discharge of the metal solution, and a solution treatment component (32) for rotating the metal solution to remove impurities. The low-pressure casting mechanism (2) includes a housing sealing assembly (22) and a guide assembly (21). The housing sealing assembly (22) is used to seal the pressurized gas, and the guide assembly (21) is used to pressurize the molten metal again to promote casting. The housing sealing assembly (22) is connected to the processing assembly (33) through a solution conduit (4).

2. The apparatus according to claim 1, wherein: The air pressure control assembly (31) includes a support frame (311), a guide airflow shell (312), a second air guide pipe (313), and a guide air cone (315). The support frame (311) is suspended in the middle of the core cavity shell (5). The inner wall of the support frame (311) is provided with a limiting groove (314). The airflow guide shell (312) is embedded in the middle of the upper end of the support frame (311). The second air guide tube (313) is disposed between the airflow guide shell (312) and the external inert gas duct. The air guide cone (315) is disposed at the bottom of the second air guide tube (313) to guide the gas discharge direction.

3. The apparatus according to claim 1, wherein: The solution treatment assembly (32) includes a central rod (321), which is rotatably mounted in the middle of the inner cavity of the support frame (311) via a bearing. The outer periphery of the central rod (321) is provided with a cleaning assembly, an agitation assembly and a laminar flow assembly from top to bottom. The impurity removal assembly includes a top sealing plate (326), a ceramic foam stack (325), and a corrugated screen plate (322) that are sequentially sleeved around the outer periphery of the central rod (321) from top to bottom. The ceramic foam stack (325) is located between the top sealing plate (326) and the corrugated screen plate (322), and the cross section of the corrugated screen plate (322) is wavy. The surface of the ceramic foam stack (325) is adapted to and fits the wavy contour of the corrugated screen plate (322) to stir the molten metal and adsorb impurities when it rotates with the central rod (321). The ceramic foam stack (325) is composed of multiple layers spliced ​​together, and several hollows (320) are opened inside it to adsorb metal impurities.

4. The apparatus according to claim 3, wherein: The agitation assembly includes multiple agitators (323), which are equally spaced around the outer periphery of the central rod (321). The cross-section of the agitator (323) is wavy, and a guide groove (327) is provided on its surface. The guide groove (327) is used to guide the molten metal to flow up and down as the agitator (323) rotates.

5. A rotary suspension clip body aluminum water pouring casting device according to claim 3, characterized in that: The laminar flow assembly includes a mounting post (328) and a spiral guide (324). The mounting post (328) is connected to the bottom of the central rod (321), and the spiral guide (324) is spirally coiled around the outer periphery of the mounting post (328). The outer wall of the mounting column (328) is provided with a plurality of inclined blades (329). The inclined blades (329) are configured to guide the molten metal to generate an upward axial flow when rotating with the central rod (321). The spiral blades of the spiral guide (324) extend obliquely toward the axis of the mounting column (328) to generate a centripetal thrust during rotation, thereby guiding the molten metal to converge toward the central axis.

6. A rotary suspension clip body aluminum water pouring casting device according to claim 2, characterized in that: The processing component (33) includes a solution vessel (331), which carries a metal solution and is embedded inside a limiting groove (314). An inlet pipe (332) extends from the upper part of the inner cavity of the solution vessel (331) and is connected to an external control connector. An outlet pipe (333) is provided on the inner wall of the solution vessel (331), which guides the metal solution to be discharged according to the internal air pressure of the solution vessel (331). The inlet end of the outlet pipe (333) is located below the spiral guide (324), and the outlet end of the outlet pipe (333) is higher than the top sealing plate (326) and is connected to the solution conduit (4).

7. The apparatus according to claim 1, wherein: The low-pressure casting mechanism (2) includes an airflow chamber (221) and a solution chamber (223). The airflow chamber (221) is fixed to the inner wall of the molten metal insulation device (1). The solution chamber (223) is located at the lower end of the airflow chamber (221). One end of the solution conduit (4) extends into the solution chamber (223). The airflow chamber (221) and the solution chamber (223) are separated by a partition (222). The airflow chamber (221) is connected to the external inert gas pipe by an airflow conduit (224).

8. The apparatus according to claim 1, wherein: The guiding component (21) includes a main tube (211) and an inner tube (216). The main tube (211) passes through the airflow chamber (221) and communicates with the external mold. The inner tube (216) is sleeved on the bottom of the main tube (211). An airflow cover (214) is sleeved on the outer periphery of the inner tube (216). The inner wall of the airflow cover (214) is provided with a spacer tube (218) extending into the inner tube (216). The inner wall of the spacer tube (218) is provided with a liquid suction tube (213) extending into the main tube (211). The liquid suction tube (213) is used to guide the molten metal into the main tube (211).

9. A rotary suspension clamp body aluminum water pouring casting device according to claim 8, characterized in that: The upper end of the airflow cover (214) is provided with a ring cover (215), and the inside of the ring cover (215) is provided with a second ceramic foam ring (219). The second ceramic foam ring (219) is configured to prevent molten metal from entering the inside of the ring cover (215) through the airflow cover (214). The ring cover (215) is fixedly installed on the outer surface of the inner tube (216), and the outer side of the ring cover (215) is connected to the first air guide tube (212), which is connected to the external high-pressure inert air tube. A first gap is defined between the spacer tube (218) and the inner tube (216), the first gap being configured to guide the inert gas inside the airflow cover (214) into the cavity between the spacer tube (218) and the suction tube (213); A second gap is defined between the suction tube (213) and the spacer tube (218), the second gap being configured to guide the gas in the cavity into the main flow tube (211); The bottom of the spacer tube (218) and the airflow cover (214) are respectively provided with a drain hole (2112) and a leak hole (2111). The bottom of the inner cavity of the airflow cover (214) is provided with a first ceramic foam ring (217). The first ceramic foam ring (217) is used to reduce the leakage rate of gas inside the airflow cover (214).

10. A rotational suspension grid body aluminum water pouring process characterized by, Using the aluminum casting apparatus according to any one of claims 1 to 9, the process includes the following steps: S1. Metal liquid pretreatment: The metal liquid is fed into the treatment component (33) through the external control nozzle. The solution treatment component (32) is started to rotate. Impurities on the surface of the metal liquid are adsorbed by the impurity removal component. The metal liquid is guided to flow upward by the laminar flow component. At the same time, the metal liquid is stirred by the stirring component. S2. First-stage pressurized delivery: After the solution pretreatment is completed, the pressure control component (31) and the processing component (33) form a sealed cavity and inject inert gas into it. As the pressure increases, the molten metal is guided into the solution conduit (4). S3, Low-pressure casting: The molten metal is introduced into the shell sealing assembly (22) through the solution conduit (4). When casting is required, gas is filled into the shell sealing assembly (22) to increase its pressure. The molten metal is introduced into the mold through the guide assembly (21). When the pressure of the shell sealing assembly (22) is stable, the guide assembly (21) applies a pressure higher than the pressure inside the shell sealing assembly (22). The molten metal is filled into the gap of the module by the pressure impact.

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