Molten aluminum transfer casting ladle device and transfer system

Abstract

The invention provides a molten aluminum transfer casting ladle device and a transfer system, and belongs to the technical field of casting equipment. According to the technical scheme, the molten aluminum transfer casting ladle device comprises a casting ladle body, the casting ladle body is provided with an air pressure adjusting part, the air pressure adjusting part is provided with an air pressure adjusting cavity, the inner wall of the air pressure adjusting cavity is provided with a porous ceramic layer, a first air channel and a first heat preservation layer from inside to outside, and the first air channel is communicated with the porous ceramic layer; the air control mechanism comprises an inert gas tank, an air pump, a vacuum pump and an air pressure monitoring module, the inert gas tank is communicated with the first air channel through the air pump, and the air pump is at least used for filling the air pressure adjusting cavity with the inert gas pump. The porous ceramic layer and the first air channel are arranged, inert gas is filled into the air pressure adjusting cavity through the air control mechanism, inert gas protection layers are formed in the air pressure adjusting cavity and the storage cavity, the contact probability of molten aluminum and oxygen is reduced, and the quality of aluminum products is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of casting equipment, and particularly relates to an aluminum liquid transfer ladle device and a transfer system. Background Art

[0002] In the modern industrial field, aluminum products are widely used in many industries such as aerospace, automotive manufacturing, and architectural decoration due to their excellent properties such as light weight, high strength, and corrosion resistance. With the continuous growth of the market demand for aluminum products, the production scale of aluminum products is constantly expanding, and aluminum liquid transfer, as a key link in the production process of aluminum products, has become increasingly prominent.

[0003] The continuous growth of the market demand for aluminum products has promoted the continuous expansion of the production scale of aluminum products and the increasing complexity of the production process. In the large-scale production process of aluminum products, aluminum liquid needs to be transferred between different workstations and equipment from the electrolysis production link to the subsequent casting and processing links, which poses an urgent demand for aluminum liquid transfer and thus promotes the development of aluminum liquid transfer technology.

[0004] However, at present, there are some problems in the actual application of widely used aluminum liquid transfer equipment on the market. From the perspective of aluminum liquid oxidation, aluminum is a metal with relatively active chemical properties and is extremely easy to undergo a violent oxidation reaction with oxygen in the air at high temperature in the liquid state, generating aluminum oxide (Al2O3). For example, relevant research shows that under traditional transfer conditions, the loss rate of aluminum liquid due to oxidation during transfer is as high as 5%-8%. These aluminum oxide impurities generated by oxidation will not only reduce the purity of aluminum liquid, affect the quality of aluminum products, but also seriously affect the mechanical properties and surface quality of aluminum products, increasing the production cost of enterprises. Summary of the Invention

[0005] Aiming at the problem that aluminum liquid in current aluminum liquid transfer equipment is prone to undergo an oxidation reaction with oxygen in the air to generate aluminum oxide impurities, thereby reducing the purity of aluminum liquid and affecting the quality of aluminum products, the present invention proposes an aluminum liquid transfer ladle device and a transfer system.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides an aluminum liquid transfer ladle device, which includes a ladle main body, and also includes a heat preservation cover body and a pneumatic control mechanism. The ladle main body is sequentially provided with a pressure adjustment part and a storage part along its own axis. The pressure adjustment part is provided with a pressure adjustment cavity, and the storage part is provided with a storage cavity for accommodating aluminum liquid. The pressure adjustment cavity is communicated with the storage part. The pressure adjustment part is provided with a liquid inlet communicated with the pressure adjustment cavity, and the storage part is provided with a liquid outlet communicated with the storage cavity. The inner wall of the pressure adjustment cavity is provided with a porous ceramic layer, a first air duct and a first heat preservation layer from inside to outside. The first air duct is communicated with the porous ceramic layer. The inner wall of the storage cavity is provided with an electric heating wire layer and a second heat preservation layer from inside to outside. The heat preservation cover body is movably connected to the ladle main body to seal or open the liquid inlet. The heat preservation cover body is provided with a vacuum valve hole. The pneumatic control mechanism includes an inert gas tank, an air pump, a vacuum pump and a pressure monitoring module. The inert gas tank is communicated with the first air duct through the air pump. The air pump is at least used to fill inert gas into the pressure adjustment cavity. The vacuum pump is communicated with the vacuum valve hole. The pressure monitoring module is arranged in the pressure adjustment cavity to at least monitor the pressure in the pressure adjustment cavity. The pressure monitoring module is connected to the air pump and the vacuum pump.

[0008] Further, the porosity of the porous ceramic layer is 40%-60%.

[0009] Further, the pore diameters of the pores in the porous ceramic layer are distributed in a gradient manner. The pore diameter of the pore surface layer is 5-10 μm, and the pore diameter of the pore bottom layer is 20-50 μm.

[0010] Further, the surface of the porous ceramic layer is provided with a silicon carbide coating.

[0011] Further, the thickness of the silicon carbide coating is 50-100 μm, and the contact angle is greater than 120°.

[0012] Further, the pneumatic control mechanism further includes a high-pressure regulating valve. A second air duct is arranged inside the heat preservation cover body. The second air duct is communicated with the inert gas tank through the high-pressure regulating valve. One end of the heat preservation cover body close to the pressure adjustment cavity is provided with a cleaning air port. The cleaning air port is communicated with the second air duct. The cleaning air port faces the porous ceramic layer. The high-pressure regulating valve is at least used to regularly control the cleaning air port to spray high-pressure gas towards the porous ceramic layer.

[0013] Further, a deflecting plate is movably connected to the cleaning air port. The deflecting plate can rotate at the cleaning air port to adjust the air outlet angle of the cleaning air port.

[0014] Further, an annular anti-splash baffle is arranged on the inner wall of the storage cavity. The pressure adjustment cavity is communicated with the storage cavity through the inner hole of the annular anti-splash baffle.

[0015] Further, a stop block is arranged along the circumferential direction of the inner hole. The stop block extends towards the pressure adjustment cavity and is inclined from the inner hole to the inner wall of the pressure adjustment cavity.

[0016] Furthermore, it also includes a pouring pipe, which includes an infusion port and a pouring port. The infusion port is connected to the outlet, and a filter is provided at the infusion port.

[0017] The present invention also provides a transfer system, including a transport platform and an aluminum liquid transfer ladle device as described above, wherein the transport platform includes a platform body and a mounting bracket connected to each other, the ladle body is movably connected to the mounting bracket, the platform body is provided with a driving mechanism, and the driving mechanism is connected to the ladle body to at least drive the ladle body to tilt and rotate relative to the mounting bracket.

[0018] Furthermore, the driving mechanism includes a driving plate body, a first driving push rod and a second driving push rod. The ladle body can be fixedly connected to the driving plate body. The driving plate body is provided with a first hinge portion, which is hinged to the mounting bracket. The first driving push rod and the second driving push rod are respectively arranged on both sides of the first hinge portion. The fixed ends of the first driving push rod and the second driving push rod are both hinged to the platform body, and the movable ends of the first driving push rod and the second driving push rod are both hinged to the driving plate body.

[0019] Furthermore, the mounting bracket includes two relatively distributed vertical beams, the vertical beam includes a first hinge hole, the first hinge part is hinged to the second hinge hole, and the platform body is provided with a driving wheel.

[0020] It can be seen from the above technical solutions that the advantages of the present invention are:

[0021] (1) The present invention arranges a porous ceramic layer and a first air channel in the air pressure regulating chamber, and then fills the air pressure regulating chamber with inert gas through a gas control mechanism, so that an inert gas protective layer is formed in the air pressure regulating chamber and the storage chamber, which greatly reduces the contact probability between aluminum liquid and oxygen, improves the purity of aluminum liquid, ensures the quality of aluminum products, and reduces production costs.

[0022] (2) The present invention arranges an electric heating wire layer and a second insulation layer in the storage chamber. The electric heating wire layer and the double-layer insulation structure work together to reduce the heat loss of the aluminum liquid during the transportation process, effectively maintain the fluidity of the aluminum liquid, reduce the occurrence of casting defects such as insufficient pouring and cold shut, avoid premature solidification of the aluminum liquid, and improve production efficiency and product qualification rate.

[0023] (3) The present invention can effectively reduce the situation where the porous ceramic layer is blocked by aluminum liquid by dividing the air pressure regulating chamber and the storage part, facilitate the injection of inert gas, and improve the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solution of the present invention, the accompanying drawings required in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0025] Figure 1 is a partial structural sectional view of the transfer device in an embodiment of the present invention;

[0026] Figure 2 is Figure 1 an enlarged view of part A in

[0027] Figure 3 is Figure 1 an enlarged view of part B in

[0028] Figure 4 is a schematic structural diagram of a transfer system in an embodiment of the present invention.

[0029] Main reference numeral description:

[0030] 100, ladle main body; 110, air pressure regulating part; 111, air pressure regulating cavity; 112, porous ceramic layer; 1121, air holes; 113, first air duct; 114, first heat preservation layer; 115, silicon carbide layer; 120, storage part; 121, storage cavity; 122, electric heating wire layer; 123, second heat preservation layer; 124, annular anti-splash baffle; 1241, block; 1242, inner hole; 130, liquid inlet; 140, liquid outlet; 200, pneumatic control mechanism; 210, inert gas tank; 220, air pump; 230, vacuum pump; 240, air pressure monitoring module; 250, high-pressure regulating valve; 300, heat preservation cover body; 310, vacuum valve hole; 320, second air duct; 330, cleaning air port; 331, deflecting plate; 400, pouring pipe; 410, liquid infusion port; 420, pouring port; 430, filter screen; 500, transport platform; 510, platform body; 511, driving wheel; 520, mounting bracket; 521, vertical beam; 5211, first hinge hole; 530, driving mechanism; 531, driving plate body; 5311, first hinge part; 532, first driving push rod; 533, second driving push rod. Detailed implementation manners

[0031] To make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the specific embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0032] Embodiment 1

[0033] Please refer to Figures 1-3 , an aluminum liquid transfer ladle device, including a ladle main body 100, and further including a heat preservation cover body 300 and a pneumatic control mechanism 200. The ladle main body 100 is sequentially provided with a pressure adjustment part 110 and a storage part 120 along its own axis. The pressure adjustment part 110 is provided with a pressure adjustment cavity 111, and the storage part 120 is provided with a storage cavity 121 for accommodating aluminum liquid. The pressure adjustment cavity 111 is communicated with the storage part 120. The pressure adjustment part 110 is provided with a liquid inlet 130 communicated with the pressure adjustment cavity 111, and the storage part 120 is provided with a liquid outlet 140 communicated with the storage cavity 121. The inner wall of the pressure adjustment cavity 111 is provided with a porous ceramic layer 112, a first air passage 113, and a first heat preservation layer 114 from the inside to the outside. The first air passage 113 is communicated with the porous ceramic layer 112. The inner wall of the storage cavity 121 is provided with an electric heating wire layer 122 and a second heat preservation layer 123 from the inside to the outside. The heat preservation cover body 300 is movably connected to the ladle main body 100 to seal or open the liquid inlet 130. The heat preservation cover body 300 is provided with a vacuum valve hole 310. The pneumatic control mechanism 200 includes an inert gas tank 210, an air pump 220, a vacuum pump 230, and a pressure monitoring module 240. The inert gas tank 210 is communicated with the first air passage 113 through the air pump 220. The air pump 220 is at least used to fill the inert gas into the pressure adjustment cavity 111. The vacuum pump 230 is communicated with the vacuum valve hole 310. The pressure monitoring module 240 is arranged in the pressure adjustment cavity 111 to at least monitor the pressure in the pressure adjustment cavity 111. The pressure monitoring module 240 is connected to the air pump 220 and the vacuum pump 230.

[0034] In this embodiment, as Figure 1As shown, the ladle body 100 can be a cylindrical structure. The ladle body 100 is arranged vertically, that is, its axis is in the vertical direction. The ladle body 100 is divided into a pneumatic adjustment part 110 and a storage part 120 from top to bottom in the vertical direction. Among them, the inside of the pneumatic adjustment part 110 is a hollow structure to form a pneumatic adjustment cavity 111, and the inside of the storage part 120 is also a hollow structure to form a storage cavity 121. The bottom of the pneumatic adjustment cavity 111 is connected to the top of the storage cavity 121. A liquid inlet 130 is opened at the top end of the pneumatic adjustment part 110, and the liquid inlet 130 is connected to the pneumatic adjustment cavity 111. A liquid outlet 140 is opened at the bottom of the storage part 120, and the liquid outlet 140 is connected to the storage cavity 121. When pouring molten aluminum into the ladle body 100, the molten aluminum first passes through the pneumatic adjustment cavity 111 and then enters the storage cavity 121 for storage. During this process, the liquid outlet 140 is in a closed state, and a valve structure can be used to control the closing and opening of the liquid outlet 140. In addition, the inner wall of the pneumatic adjustment cavity 111 is sequentially provided with a porous ceramic layer 112, a first air duct 113 and a first heat insulation layer 114 from the inside to the outside. Among them, the porous ceramic layer 112 forms the inner wall surface of the pneumatic adjustment cavity 111, and its pore structure makes it have good air permeability and corrosion resistance. The first air duct 113 surrounds the outside of the porous ceramic layer 112 and is connected to the porous ceramic layer 112, so as to be able to guide the inert gas to uniformly diffuse into the pneumatic adjustment cavity 111. The first heat insulation layer 114 is arranged outside the first air duct 113 and uses a high-efficiency heat insulation material to effectively reduce heat dissipation. The storage cavity 121 of the storage part 120 is used to hold the molten aluminum to be transported. The inner wall is arranged with an electric heating wire layer 122 and a second heat insulation layer 123 from the inside to the outside. The electric heating wire layer 122 can supplement heat to the molten aluminum during transportation to maintain its temperature stability, and the second heat insulation layer 123 further strengthens the heat insulation effect.

[0035] The heat insulation cover body 300 and the ladle body 100 are movably connected by means such as hinge or buckle to realize the sealing and opening of the liquid inlet 130. A vacuum valve hole 310 is provided on the heat insulation cover body 300 for connecting the vacuum pump 230 to realize the vacuum treatment in the pneumatic adjustment cavity 111. The pneumatic control mechanism 200 includes an inert gas tank 210, an air pump 220, a vacuum pump 230 and a pressure monitoring module 240. The inert gas tank 210 is used to store inert gas (such as argon, etc.). The air pump 220 transports the gas in the inert gas tank 210 to the first air duct 113 through a pipeline. The vacuum pump 230 is connected to the pneumatic adjustment cavity 111 through the vacuum valve hole 310. The pressure monitoring module 240 is installed in the pneumatic adjustment cavity 111 to monitor the air pressure in the cavity in real time and establish a signal connection with the air pump 220 and the vacuum pump 230 to realize the intelligent control of the air pressure.

[0036] When aluminum liquid is being transferred, the heat-insulating cover 300 is first opened, and the aluminum liquid is injected into the storage chamber 121 through the liquid inlet 130. Then the heat-insulating cover 300 is closed and the liquid inlet 130 is sealed. At this time, the air pressure monitoring module 240 starts to monitor the air pressure in the air pressure regulating chamber 111 in real time. If the air pressure in the chamber is higher than the set value, the vacuum pump 230 is started to extract the gas in the chamber through the vacuum valve hole 310 to reduce the air pressure. If the air pressure is lower than the set value, the air pump 220 is started to fill the inert gas in the inert gas tank 210 into the air pressure regulating chamber 111 through the first air channel 113 and the porous ceramic layer 112. Due to the porous structure of the porous ceramic layer 112, the inert gas can evenly penetrate into the chamber and replace the air, forming an inert gas protective layer on the surface of the aluminum liquid to isolate oxygen and prevent the aluminum liquid from oxidation.

[0037] At the same time, during the transportation process, the electric heating wire layer 122 in the storage chamber 121 heats the aluminum liquid. Specifically, a temperature sensor can be provided to automatically adjust the heating power according to the information fed back by the aluminum liquid temperature sensor to ensure that the temperature of the aluminum liquid is maintained within a suitable range. At the same time, the second insulation layer 123 and the first insulation layer 114 play a role in reducing the loss of heat to the outside. When it is necessary to pour aluminum liquid, the aluminum liquid flows from the air pressure regulating chamber 111 through the connecting channel into the storage chamber 121, and then outputs through the liquid outlet 140 to complete the pouring operation. During the whole process, the air pressure monitoring module 240 continuously monitors the air pressure, controls the operation of the air pump 220 and the vacuum pump 230 in real time, and ensures the stability of the inert gas environment in the air pressure regulating chamber 111.

[0038] Particularly, the inert gas tank 210 is connected to the first gas channel 113 via a connecting pipe structure, and the vacuum pump 230 is correspondingly connected to the vacuum valve hole 310 via a connecting pipe structure.

[0039] In the above structure, by arranging the porous ceramic layer 112 and the first air channel 113 in the air pressure regulating chamber 111, and then filling the air pressure regulating chamber 111 with inert gas through the air control mechanism 200, an inert gas protective layer is formed in the air pressure regulating chamber 111 and the storage chamber 121, which greatly reduces the probability of contact between aluminum liquid and oxygen, improves the purity of aluminum liquid, ensures the quality of aluminum products, and reduces production costs. At the same time, the electric heating wire layer 122 works in coordination with the double-layer insulation structure to reduce the heat loss of aluminum liquid during transportation, effectively maintain the fluidity of aluminum liquid, reduce the occurrence of casting defects such as insufficient pouring and cold shut, avoid premature solidification of aluminum liquid, and improve production efficiency and product qualification rate. By setting the air pressure regulating chamber 111 and the storage part 120 in a partitioned manner, the situation of aluminum liquid blocking the porous ceramic layer 112 can be effectively reduced, which is convenient for the inert gas to be rushed in and improves the stability of use.

[0040] Specifically, the porosity of the porous ceramic layer 112 is 40%-60%. The pore diameters of the pores 1121 in the porous ceramic layer 112 are distributed in a gradient manner. The pore diameter of the surface layer of the pores 1121 is 5-10 μm, and the pore diameter of the bottom layer of the pores 1121 is 20-50 μm.

[0041] In this embodiment, as Figure 1 , Figure 2 shown, the porosity of the porous ceramic layer 112 is between 40% and 60%. At the same time, the pore diameters of the pores 1121 in the porous ceramic layer 112 increase step by step along the axial direction of the porous ceramic layer 112 from the air pressure regulating cavity 111 outward. Among them, the pore diameter of the surface layer of the pores 1121 is 5-10 μm, and the pore diameter of the bottom layer of the pores 1121 is 20-50 μm. Thus, the porosity of 40%-60% is combined with the gradient distribution of the pore diameters, enabling the inert gas to diffuse efficiently and uniformly in the air pressure regulating cavity 111. When the air pump 220 injects the inert gas into the first air duct 113, the gas quickly enters the ceramic layer through the large pore diameters of the bottom layer, and then slowly and uniformly penetrates into the cavity through the small pores of the surface layer, rapidly displacing the air, forming a dense inert gas protection layer on the surface of the molten aluminum, improving the purity of the molten aluminum, ensuring the quality of the aluminum products, and significantly reducing the raw material loss cost caused by oxidation. The pores 1121 are in a stepped shape, and the small pores on the surface layer have a certain blocking effect on the gas, enabling the gas to be evenly dispersed during the penetration process, avoiding the impact on the surface of the molten aluminum caused by excessive local air flow. The large pores at the bottom layer ensure the rapid transmission of the gas, ensuring that the air pressure control mechanism 200 can quickly adjust the air pressure in the cavity. This structure reduces the air pressure fluctuation range in the air pressure regulating cavity 111 to within ±2 kPa, ensuring the stability of the inert gas environment and providing more reliable protection for the molten aluminum.

[0042] At the same time, the small pores on the surface layer effectively block the penetration of the molten aluminum, preventing the molten aluminum from entering the interior of the ceramic layer and causing blockage or structural damage to the pores 1121. The design of the large pores at the bottom layer reduces the damage to the ceramic layer caused by the pressure difference generated by poor gas flow, reduces the maintenance frequency and replacement cost of the equipment, and improves the continuity and efficiency of production.

[0043] In addition, a silicon carbide coating is provided on the surface of the porous ceramic layer 112. The thickness of the silicon carbide coating is 50-100 μm, and the contact angle is greater than 120°.

[0044] In this embodiment, a silicon carbide layer 115 is further coated on the outer surface of the porous ceramic layer 112. The thickness of the silicon carbide coating is between 50 and 100 μm, and its contact angle is greater than 120°. The silicon carbide coating has extremely high chemical stability and can effectively isolate the contact between oxygen and the porous ceramic layer 112 and the molten aluminum in a high-temperature environment. Its dense structure can prevent the diffusion of oxygen molecules, further strengthening the protection of the molten aluminum. With its high hardness and good chemical stability, the silicon carbide coating can effectively resist the erosion of the molten aluminum and its oxides. The liquid-repellent property with a contact angle greater than 120° makes it difficult for the molten aluminum to adhere to the surface of the silicon carbide coating. During the transfer and pouring of the molten aluminum, the residue of the molten aluminum on the surface of the porous ceramic layer 112 is greatly reduced, avoiding the blockage of the pores 1121 of the porous ceramic layer 112 due to the solidification of the residual molten aluminum, ensuring the normal flow of gas, and maintaining the stable operation of the air control mechanism 200. At the same time, reducing the adhesion of the molten aluminum also facilitates the cleaning and maintenance of the ladle device, improving the use efficiency of the equipment.

[0045] In addition, the air control mechanism 200 further includes a high-pressure regulating valve 250. A second air passage 320 is provided inside the heat-insulating cover 300. The second air passage 320 is connected to the inert gas tank 210 through the high-pressure regulating valve 250. A cleaning air port 330 is provided at one end of the heat-insulating cover 300 close to the air pressure regulating chamber 111. The cleaning air port 330 is connected to the second air passage 320. The cleaning air port 330 faces the porous ceramic layer 112. The high-pressure regulating valve 250 is at least used to periodically control the cleaning air port 330 to spray high-pressure gas towards the porous ceramic layer 112.

[0046] In this embodiment, as Figure 1 、 Figure 3 shown, a second air passage 320 is provided inside the heat-insulating cover 300. The second air passage 320 can be connected to the inert gas tank 210 through a pipeline, and a high-pressure regulating valve 250 is also connected between the second air passage 320 and the inert gas tank 210. The high-pressure regulating valve 250 can input the inert gas from the inert gas tank 210 into the second air passage 320 in a timed and constant-pressure manner. A plurality of cleaning air ports 330 are provided on the bottom end surface of the heat-insulating cover 300. The cleaning air ports 330 are connected to the second air passage 320, and the openings of the cleaning air ports 330 face the porous ceramic layer 112. The inert gas input into the second air passage 320 is output from the cleaning air ports 330 and can clean the porous ceramic layer 112. Among them, the high-pressure regulating valve 250 adopts the structure of the existing technology and has precise pressure regulation and timing control functions. It is internally provided with an electromagnetic driving device and a precise pressure sensor, and can realize the automatic opening and closing of the valve according to the preset program. The pressure regulation range is 0 - 10 MPa, and the time control accuracy reaches ±1 second. The opening diameter of the cleaning air port 330 is 8 - 12 mm, ensuring that the sprayed high-pressure gas can effectively cover and act on the porous ceramic layer 112.

[0047] During the normal working stage of the molten aluminum transfer ladle device, the high-pressure regulating valve 250 is in the closed state. The pneumatic control mechanism 200 adjusts the air pressure and supplements inert gas according to the original process, maintains the inert gas environment in the air pressure regulating chamber 111, and ensures the anti-oxidation requirement of the molten aluminum. When the device is in the standby or transfer interval stage, the high-pressure regulating valve 250 automatically opens according to the preset timing program. At this time, the high-pressure inert gas (such as argon) in the inert gas tank 210 flows into the second air duct 320 after being decompressed by the high-pressure regulating valve 250. Under the action of the gas pressure, the high-pressure gas rapidly transmits along the second air duct 320 to the cleaning air port 330 and rushes towards the surface of the porous ceramic layer 112 in the form of high-speed jet. The high-speed air flow strongly blows the surface of the porous ceramic layer 112 and the pores 1121, removing the molten aluminum residues, oxide particles and other impurities attached to the surface. After the cleaning process lasts for a certain period of time (such as 30 - 60 seconds), the high-pressure regulating valve 250 automatically closes, stops the gas jet, and completes a cleaning operation. By setting different cleaning cycles (such as cleaning once every 3 - 5 transfers), the porous ceramic layer 112 can always maintain good air permeability and anti-oxidation performance.

[0048] By regularly jetting high-pressure gas, impurities on the surface of the porous ceramic layer 112 and in the pores 1121 can be effectively removed, avoiding blockage of the pores 1121 and maintaining the air permeability and gas uniform diffusion performance of the porous ceramic layer 112.

[0049] More specifically, a deflecting plate 331 is movably connected to the cleaning air port 330. The deflecting plate 331 can rotate at the cleaning air port 330 to adjust the outlet angle of the cleaning air port 330.

[0050] In this embodiment, as Figure 3 shown, the deflecting plate 331 at the cleaning air port 330 is made of a high-temperature resistant and high-strength metal material, and the thickness is controlled within 3 - 5 mm. It can not only ensure sufficient strength to resist the impact of high-pressure gas, but also have a certain flexibility for rotational adjustment. The deflecting plate 331 has a circular thin plate structure, and its diameter is equal to or slightly smaller than the opening diameter of the cleaning air port 330. The edge is rounded to reduce the gas flow resistance. In a specific installation structure, the relative two sides of the deflecting plate 331 along its radial direction are hinged to the cleaning air port 330, so that the deflecting plate 331 can rotate in the cleaning air port 330, thereby adjusting the angle of the inert gas output from the cleaning air port 330. In another embodiment, the deflecting plate 331 can also be connected to a driving motor, and the driving motor drives the deflecting plate 331 to rotate by a certain angle.

[0051] In the above structure, by adjusting the direction-changing plate 331 to change the air outlet angle of the cleaning air port 330, high-pressure gas can be sprayed onto the surface of the porous ceramic layer 112 in different directions and angles, effectively covering all areas of the porous ceramic layer 112, greatly improving the cleaning effect, better removing impurities on the surface and in the pores 1121, further reducing the risk of blockage of the pores 1121, and ensuring the air permeability of the porous ceramic layer 112 and the diffusion effect of inert gas.

[0052] In the specific structure of the storage cavity 121, an annular anti-splash baffle 124 is provided on the inner wall of the storage cavity 121, and the air pressure adjustment cavity 111 communicates with the storage cavity 121 through the inner hole 1242 of the annular anti-splash baffle 124. A stop block 1241 is provided along the circumferential direction of the inner hole 1242, the stop block 1241 extends towards the air pressure adjustment cavity 111, and is inclined from the inner hole 1242 towards the inner wall of the air pressure adjustment cavity 111.

[0053] In this embodiment, as Figure 1 shown, an annular anti-splash baffle 124 is provided on the inner wall of the upper side of the storage cavity 121. The annular anti-splash baffle 124 is coaxially arranged with the storage cavity 121, and the outer edge of the annular anti-splash baffle 124 is fixedly connected to the inner wall of the storage cavity 121. Among them, the air pressure adjustment cavity 111 communicates with the storage cavity 121 through the inner hole 1242 of the annular anti-splash baffle 124. The annular anti-splash baffle 124 is made of a special alloy steel material with high temperature resistance and high strength, and can withstand the impact and pressure of high-temperature aluminum liquid. Among them, the annular anti-splash baffle 124 is provided with a stop block 1241 along the circumferential direction at the edge of its inner hole 1242. Among them, the stop block 1241 extends towards the air pressure adjustment cavity 111, and is inclined from the annular anti-splash baffle 124 towards the inner wall of the air pressure adjustment cavity 111 along the extension direction, so that the stop block 1241 can block the splashing path of the aluminum liquid while not causing too much obstruction to the normal flow of the aluminum liquid from the air pressure adjustment cavity 111 to the storage cavity 121.

[0054] By providing the annular anti-splash baffle 124 and the stop block 1241, when the aluminum liquid flows from the air pressure adjustment cavity 111 into the storage cavity 121 through the inner hole 1242 of the annular anti-splash baffle 124, the high-speed flowing aluminum liquid will have a tendency to splash due to inertia. At this time, the stop block 1241 inclined at the inner hole 1242 can effectively block the splashing path of the aluminum liquid, change the flow direction of the aluminum liquid, and make the aluminum liquid flow smoothly into the storage cavity 121 along the stop block 1241 and the inner wall of the annular anti-splash baffle 124. The smooth inflow of the aluminum liquid into the storage cavity 121 can make the liquid level of the aluminum liquid in the storage cavity 121 more stable, facilitate the operator to accurately judge and control the amount of aluminum liquid, thereby improving the accuracy and quality of the subsequent pouring operation, reducing product defects caused by unstable aluminum liquid flow, and improving the product qualification rate and production efficiency.

[0055] In addition, the device further includes a pouring pipe 400, which includes an infusion port 410 and a pouring port 420. The infusion port 410 is communicated with the liquid outlet 140, and a filter screen 430 is provided at the infusion port 410.

[0056] In this embodiment, as Figure 1 shown, the pouring pipe 400 can adopt a double-layer composite structure design. The inner layer is made of a special ceramic material with high temperature resistance and corrosion resistance, such as zirconia ceramics, which can withstand the erosion of high-temperature molten aluminum and ensure the service life of the pouring pipe 400. The outer layer is made of high-strength alloy steel material, which provides sufficient mechanical strength for the pouring pipe 400 and makes it not easily deformed or damaged during transportation and use. The pouring pipe 400 is integrally tubular, with one end being the infusion port 410 and the other end being the pouring port 420. The infusion port 410 is connected to the liquid outlet 140 of the storage cavity 121 through a flange. This connection method is convenient for disassembly and maintenance, and at the same time ensures the sealing of the connection part to prevent the leakage of molten aluminum. The diameter of the infusion port 410 is slightly larger than that of the liquid outlet 140 to ensure that the molten aluminum can flow smoothly into the pouring pipe 400. Inside the infusion port 410, there is a detachable filter screen 430 structure. The filter screen 430 is woven from stainless steel wires and can effectively filter impurities in the molten aluminum. The filter screen 430 can be fixed to the inner wall of the infusion port 410 through an annular card slot, and the card slot fits tightly with the edge of the filter screen 430 to ensure that the filter screen 430 will not be displaced under the impact of the flowing molten aluminum.

[0057] Embodiment 2

[0058] Please refer to Figure 4 , the present invention further provides a transfer system, which includes a transport platform 500 and a molten aluminum transfer ladle device. The transport platform 500 includes a platform body 510 and a mounting bracket 520 connected to each other. The ladle main body 100 is movably connected to the mounting bracket 520. The platform body 510 is provided with a driving mechanism 530, and the driving mechanism 530 is connected to the ladle main body 100 to at least drive the ladle main body 100 to tilt and rotate relative to the mounting bracket 520. The driving mechanism 530 includes a driving plate body 531, a first driving push rod 532 and a second driving push rod 533. The ladle main body 100 can be fixedly connected to the driving plate body 531. The driving plate body 531 is provided with a first hinged part 5311, and the first hinged part 5311 is hinged to the mounting bracket 520. The first driving push rod 532 and the second driving push rod 533 are respectively arranged on both sides of the first hinged part 5311. The fixed ends of the first driving push rod 532 and the second driving push rod 533 are both hinged to the platform body 510, and the movable ends of the first driving push rod 532 and the second driving push rod 533 are both hinged to the driving plate body 531. The mounting bracket 520 includes two relatively distributed vertical beams 521. The vertical beam 521 includes a first hinged hole 5211, and the first hinged part 5311 is hinged to the second hinged hole. The platform body 510 is provided with driving wheels 511.

[0059] In this embodiment, the platform body 510 of the transportation platform 500 is welded by high-strength steel sections to form a strong frame structure. Driving wheels 511 are installed at the bottom of the platform body 510, enabling flexible movement and precise positioning. The mounting bracket 520 is composed of two vertically arranged beams 521 distributed oppositely. The vertically arranged beams 521 are made of rectangular steel pipes, having good rigidity and torsional resistance. A first hinge hole 5211 is respectively provided on each vertically arranged beam 521.

[0060] The driving plate body 531 is made of high-strength aluminum alloy plate. First hinge parts 5311 are arranged on opposite sides of the driving plate body 531. The first hinge parts 5311 are cylindrical hinge shafts, and their diameters are adapted to the first hinge holes 5211 on the vertically arranged beams 521. The driving plate body 531 is hinged to the vertically arranged beams 521 through pin shafts, enabling the driving plate body 531 to rotate around the hinge shaft. The first driving push rod 532 and the second driving push rod 533 are both electric push rods. Their fixed ends are hinged to the platform body 510, and their movable ends are hinged to the driving plate body 531 through ball joints, capable of realizing stable and precise telescopic movement. The ladle main body 100 and the driving plate body 531 can be fixedly connected by means of bolt connection or the like, ensuring that there is no relative displacement during the transfer and pouring processes.

[0061] Before the aluminum liquid transfer operation starts, the operator moves the transfer system to the aluminum liquid receiving position by starting the driving motor of the driving wheels 511. When it is necessary to receive aluminum liquid, the ladle main body 100 is in an initial upright state. The aluminum liquid is injected into the storage cavity 121 of the ladle main body 100 through the liquid inlet 130. After the liquid injection is completed, the heat preservation cover body 300 is closed, and the pneumatic control mechanism 200 starts to work, filling the air pressure regulation cavity 111 with inert gas to form a protective atmosphere to prevent the aluminum liquid from oxidizing. During the transfer process, the transfer system moves within the production site relying on the driving wheels 511, transporting the aluminum liquid to the pouring station. After arriving at the pouring station, the operator starts the driving mechanism 530, and the first driving push rod 532 and the second driving push rod 533 start to work. For example, when small-angle pouring is required, the first driving push rod 532 extends, and the second driving push rod 533 shortens, pushing the driving plate body 531 to rotate around the first hinge part 5311, thereby driving the ladle main body 100 to tilt at a certain angle relative to the mounting bracket 520, enabling the aluminum liquid to slowly flow out from the pouring port 420 of the pouring pipe 400 and be injected into the mold cavity. As the pouring progresses, according to the pouring amount of the aluminum liquid and the filling condition of the mold, the telescopic lengths of the first driving push rod 532 and the second driving push rod 533 are adjusted in real time to precisely control the tilting angle of the ladle main body 100, ensuring that the aluminum liquid can be accurately and appropriately poured into the mold. When the pouring is completed, the first driving push rod 532 and the second driving push rod 533 move in the reverse direction, causing the ladle main body 100 to return to the upright state for the next transfer and pouring operation.

[0062] In the above structure, by setting the first driving push rod 532 and the second driving push rod 533 and combining with the hinged structure, the precise control of the tilting angle of the ladle body 100 can be realized, so as to better grasp the pouring amount and pouring speed of the molten aluminum, meet the requirements of different molds and products for the pouring process, reduce the product defects caused by inaccurate pouring, improve the dimensional accuracy and consistency of the products. The design of the driving wheels 511 of the platform body 510 enables the transfer system to move flexibly within the production site, greatly reducing the labor intensity and time cost of manually handling the ladle.

[0063] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A molten aluminum transfer ladle device, comprising a ladle body (100), characterized in that: It also includes a heat-insulating cover (300) and a gas control mechanism (200), and the ladle body (100) is provided with a gas pressure regulating part (110) and a storage part (120) in sequence along its axial direction; The air pressure regulating part (110) is provided with an air pressure regulating chamber (111), the storage part (120) is provided with a storage chamber (121) for accommodating aluminum liquid, the air pressure regulating chamber (111) is communicated with the storage part (120), the air pressure regulating part (110) is provided with a liquid inlet (130) communicated with the air pressure regulating chamber (111), the storage part (120) is provided with a liquid outlet (140) communicated with the storage chamber (121), the inner wall of the air pressure regulating chamber (111) is provided with a porous ceramic layer (112), a first air channel (113) and a first thermal insulation layer (114) from the inside to the outside, the first air channel (113) is communicated with the porous ceramic layer (112), and the inner wall of the storage chamber (121) is provided with an electric heating wire layer (122) and a second thermal insulation layer (123) from the inside to the outside; The heat-insulating cover (300) is movably connected to the ladle body (100) to seal or open the liquid inlet (130), and the heat-insulating cover (300) is provided with a vacuum valve hole (310); The gas control mechanism (200) comprises an inert gas tank (210), an air pump (220), a vacuum pump (230) and an air pressure monitoring module (240); the inert gas tank (210) is in communication with the first air channel (113) via the air pump (220); the air pump (220) is at least used to charge the inert gas (220) into the air pressure regulating chamber (111); the vacuum pump (230) is in communication with the vacuum valve hole (310); the air pressure monitoring module (240) is arranged in the air pressure regulating chamber (111) to at least monitor the air pressure of the air pressure regulating chamber (111); and the air pressure monitoring module (240) is connected to the air pump (220) and the vacuum pump (230).

2. The aluminum liquid transfer ladle device according to claim 1, characterized in that: The porosity of the porous ceramic layer (112) is 40%-60%; And / or, the pores (1121) of the porous ceramic layer (112) have a gradient distribution of pore sizes, the pore size of the surface layer of the pores (1121) is 5-10 μm, and the pore size of the bottom layer of the pores (1121) is 20-50 μm.

3. The aluminum liquid transfer ladle device according to claim 2, characterized in that: The surface of the porous ceramic layer (112) is provided with a silicon carbide coating; And / or, the silicon carbide coating has a thickness of 50-100 μm and a contact angle greater than 120°.

4. The aluminum liquid transfer ladle device according to claim 3, characterized in that: The gas control mechanism (200) further comprises a high-pressure regulating valve (250); a second gas passage (320) is provided inside the heat-insulating cover body (300); the second gas passage (320) is communicated with the inert gas tank (210) through the high-pressure regulating valve (250); a clean gas port (330) is provided at one end of the heat-insulating cover body (300) close to the gas pressure regulating chamber (111); the clean gas port (330) is communicated with the second gas passage (320); the clean gas port (330) faces the porous ceramic layer (112); and the high-pressure regulating valve (250) is at least used for timing control of the clean gas port (330) to spray high-pressure gas toward the porous ceramic layer (112).

5. The aluminum liquid transfer ladle device according to claim 4, characterized in that: The clean air port (330) is movably connected to a direction adjustment plate (331), and the direction adjustment plate (331) can rotate at the clean air port (330) to adjust the air outlet angle of the clean air port (330).

6. The aluminum liquid transfer ladle device according to claim 1, characterized in that: An annular splash shield (124) is provided on the inner wall of the storage cavity (121); the air pressure regulating cavity (111) is connected to the storage cavity (121) through an inner hole (1242) of the annular splash shield (124); And / or, a stopper (1241) is provided at the inner hole (1242) along its circumference, and the stopper (1241) extends toward the air pressure regulating chamber (111) and is inclined from the inner hole (1242) to the inner wall of the air pressure regulating chamber (111).

7. The aluminum liquid transfer ladle device according to claim 1, characterized in that: It also includes a pouring pipe (400), the pouring pipe (400) including an infusion port (410) and a pouring port (420), the infusion port (410) is connected to the liquid outlet (140), and a filter screen (430) is provided at the infusion port (410).

8. A transport system, characterized in that: It comprises a transport platform (500) and an aluminum liquid transfer ladle device as described in any one of claims 1 to 7, wherein the transport platform (500) comprises a platform body (510) and a mounting bracket (520) connected to each other, the ladle body (100) is movably connected to the mounting bracket (520), and the platform body (510) is provided with a driving mechanism (530), and the driving mechanism (530) is connected to the ladle body (100) to at least drive the ladle body (100) to tilt and rotate relative to the mounting bracket (520).

9. A transport system according to claim 8, characterized in that: The driving mechanism (530) includes a driving plate body (531), a first driving push rod (532) and a second driving push rod (533); the ladle body (100) can be fixedly connected to the driving plate body (531); the driving plate body (531) is provided with a first hinge portion (5311); the first hinge portion (5311) is hinged to the mounting bracket (520); the first driving push rod (532) and the second driving push rod (533) are respectively arranged on both sides of the first hinge portion (5311); the fixed ends of the first driving push rod (532) and the second driving push rod (533) are both hinged to the platform body (510); the movable ends of the first driving push rod (532) and the second driving push rod (533) are both hinged to the driving plate body (531).

10. A transport system according to claim 9, characterized in that: The mounting bracket (520) includes two vertical beams (521) that are relatively distributed, the vertical beam (521) includes a first hinge hole (5211), the first hinge part (5311) is hinged to the second hinge hole, and the platform body (510) is provided with a driving wheel (511).

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