Continuous semi-solid pulping equipment and process

Abstract

The invention discloses continuous semi-solid pulping equipment and process. The continuous semi-solid pulping equipment comprises a forming mechanism; the conveying mechanism is mounted at the bottom of the forming mechanism; the melting mechanism is mounted at the top of the forming mechanism; the gas injection mechanism is mounted on the surface of the forming mechanism; and the air inlet end of the air exhaust mechanism communicates with the top of the forming mechanism. The invention aims to solve the technical problems that in the using process of existing semi-solid pulping equipment, gas injection is not uniform easily, slurry nucleation is not uniform due to the fact that gas injection is not uniform, the size of a crystal nucleus is not uniform, and finally liquidity difference is caused.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, in particular to a continuous semi-solid pulping device and process. Background Art

[0002] In the traditional semi-solid metal slurry preparation process, an intermittent production method is usually used. Although this method can ensure the quality of the slurry, it is difficult to meet the needs of modern industry for large-scale production due to its low production efficiency. In addition, the instability of gas injection and the uncontrollability of stirring uniformity in the intermittent slurry preparation process often lead to fluctuations in slurry properties, affecting the quality and consistency of the final product.

[0003] Injecting gas during the preparation of semi-solid metal slurry not only provides shearing and cooling effects to help the formation of spherical crystals, but also acts as nucleation cores to produce refined crystals.

[0004] Continuous pulping can significantly improve production efficiency while maintaining product quality, and by precisely controlling process parameters, a more stable pulp output can be achieved. However, the existing continuous pulping technology still has some shortcomings, such as uneven gas injection, poor stirring effect, and lack of effective online monitoring methods for pulp quality.

[0005] The Chinese patent application No. 201510603929.8 discloses a process and equipment for continuously preparing semi-solid slurry, including preheating a slurry container, scooping molten alloy, stirring and cooling the molten alloy, and preparing semi-solid slurry. The process can continuously produce semi-solid slurry. The invention also discloses a semi-solid slurry production equipment suitable for the process, including a slurry container, an oil pipeline, a stirring rod, a stirring motor, a metal pipe, an oil temperature machine, a first temperature measuring couple and a second temperature measuring couple. The speed of the stirring rod is set to 300 to 900 revolutions per minute, and the oil temperature machine is set to provide heat transfer oil of different temperatures in different process steps. The slurry container can directly transport raw materials or slurry. The process and equipment have high slurrying efficiency and can be applied to industrial production, solving the problem of slurry supply in the continuous production process of semi-solid rheocasting.

[0006] During the use of existing semi-solid pulping equipment, it is easy to cause uneven gas injection, which will lead to uneven slurry nucleation, uneven crystal nucleus size, and ultimately lead to differences in fluidity. Summary of the invention

[0007] The technical problem to be solved by the present invention is that the existing semi-solid pulping equipment is prone to uneven gas injection during use, which can lead to uneven slurry nucleation, uneven crystal nucleus size, and ultimately fluidity differences.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a continuous semi-solid pulping device, comprising: Forming mechanism; A conveying mechanism, wherein the conveying mechanism is installed at the bottom of the forming mechanism; A melting mechanism, wherein the melting mechanism is installed on the top of the forming mechanism; A gas injection mechanism, wherein the gas injection mechanism is installed on the surface of the molding mechanism; An air extraction mechanism, wherein the air inlet end of the air extraction mechanism is connected to the top of the forming mechanism; The cooling mechanism is fixedly sleeved on the surface of the forming mechanism.

[0009] As a preferred solution of the continuous semi-solid pulping equipment described in the present invention, wherein: the forming mechanism includes a tank body, a first temperature sensor and a first pressure sensor are fixedly installed on the top of the tank body, respectively, a support seat is fixedly connected to the top of the tank body surface, a hollow rod is rotatably connected at the center of the top of the tank body, a driven bevel gear is fixedly sleeved on the surface of the hollow rod, a driving bevel gear is meshed on the top of the driven bevel gear, a limiting cover is rotatably connected to the surface of the hollow rod, the limiting cover is fixedly installed on the top of the inner wall of the tank body, an eccentric stirring drum is fixedly connected to the bottom of the hollow rod, a triangular stirring frame is fixedly connected to the bottom of the eccentric stirring drum, and the triangular stirring frame is movably connected to the bottom of the inner wall of the tank body.

[0010] As a preferred solution of the continuous semi-solid pulping equipment described in the present invention, wherein: a plurality of first one-way air injection nozzles are fixedly installed on the left side of the eccentric mixing drum, an air outlet channel connected to the first one-way air injection nozzle is opened inside the eccentric mixing drum, the air outlet channel is connected to the hollow rod, a discharge valve is fixedly installed at the center of the bottom of the tank body, and a plurality of transducers are installed around the bottom of the tank body.

[0011] As a preferred solution of the continuous semi-solid pulping equipment described in the present invention, the conveying mechanism includes a base, the top of the base is fixedly connected with a conveying cylinder, a frame and a first reduction motor, the inner wall of the frame is rotatably connected with a second transmission wheel and a first transmission wheel respectively, the surfaces of the second transmission wheel and the first transmission wheel are transmission-connected with a transmission belt, the output shaft of the first reduction motor is fixedly connected with the first transmission wheel, the right side of the frame is respectively fixedly installed with a controller and an ultrasonic generator, the left end of the second transmission wheel is fixedly connected with the right end of the active bevel gear, and the left end of the first transmission wheel is fixedly connected with a rotating rod.

[0012] As a preferred solution of the continuous semi-solid pulping equipment described in the present invention, wherein: the first conveying screw and the second conveying screw are rotatably connected inside the conveying barrel respectively, the right ends of the first conveying screw and the second conveying screw are fixedly sleeved with gears meshing with each other, the left end of the rotating rod is fixedly connected to the right end of the second conveying screw, the feed end of the conveying barrel is connected to the discharge end of the discharge valve, a plurality of electric heating rings are fixedly sleeved on the surface of the conveying barrel, and a second temperature sensor is fixedly installed on the left side of the top of the conveying barrel.

[0013] As a preferred embodiment of the continuous semi-solid pulping equipment described in the present invention, the melting mechanism includes a melting tank, a second reduction motor and a feeding speed control valve are respectively fixedly installed on the top of the melting tank, the output shaft of the second reduction motor extends to the inner cavity of the melting tank and is fixedly connected to a stirring assembly, a hopper connected to the feeding speed control valve is installed on the top, the melting tank and the rear side of the hopper are fixedly connected to a fixed plate, the fixed plate is fixedly installed on the surface of the tank body, an electric unloading valve is fixedly installed on the bottom of the melting tank, a heater and a heat preservation cover are respectively fixedly sleeved on the surface of the melting tank, and the heater is located in the inner cavity of the heat preservation cover.

[0014] As a preferred scheme of the continuous semi-solid pulping equipment described in the present invention, wherein: the air injection mechanism includes an air inlet pipe, the right side of the air inlet pipe is respectively connected with a first air pressure regulating valve and a second air pressure regulating valve, the air outlet end of the first air pressure regulating valve is connected with a first flow meter, the air outlet end of the first flow meter is connected with a first air outlet pipe, the bottom of the first air outlet pipe is located in the inner cavity of the hollow rod and is movably connected thereto, the surface of the first air outlet pipe is fixedly connected with a limiting member, the limiting member is fixedly installed on the top of the tank body, the air outlet end of the second air pressure regulating valve is connected with a second flow meter, the air outlet end of the second flow meter is connected with an annular pipe, the bottom of the annular pipe is connected with a plurality of second air outlet pipes, the surface of the second air outlet pipe is connected with a second one-way air injection nozzle, the second one-way air injection nozzle penetrates into the inner cavity of the tank body, and second air pressure sensors are installed on the tops of the first air outlet pipe and the annular pipe.

[0015] As a preferred solution of the continuous semi-solid pulping equipment described in the present invention, the vacuum mechanism includes an air pump, which is fixedly installed on the top of the base, the air inlet end of the air pump is connected to an air suction pipe, the air inlet end of the air suction pipe is connected to an electromagnetic valve, the bottom of the electromagnetic valve is connected to an air suction head, and the bottom of the air suction head passes through the inner cavity of the tank body.

[0016] As a preferred solution of the continuous semi-solid pulping equipment described in the present invention, wherein: the cooling mechanism includes a first cooling jacket and a second cooling jacket, the first cooling jacket and the second cooling jacket are fixedly sleeved on the surface of the tank body, the first cooling jacket is connected to the second cooling jacket, a pump body connected to it is installed at the bottom of the first cooling jacket, the water inlet end of the pump body is connected to a water pumping pipe, the input end fixed sleeve of the pump body is provided with a first pulley, a second pulley is provided on one side of the first pulley, the surfaces of the first pulley and the second pulley are connected by belts for transmission, the second pulley is fixedly sleeved on the surface of the rotating rod, and the water outlet ends of the first cooling jacket and the second cooling jacket are connected by a reflux pipe.

[0017] A continuous semi-solid pulping process comprises the following steps: S1, raw material preparation, placing the required metal raw materials in the hopper, controlling the material discharge speed of the hopper through the material discharge speed control valve, and preparing to enter the melting stage; S2, melting stage, metal raw material particles enter the melting tank, the melting mechanism is started, and the stirring component is driven to rotate by the second reduction motor to stir the metal raw materials in the melting tank. During the stirring process, the heater provides a stable heat source for the melting tank to ensure that the metal raw materials are completely melted; S3, stirring and cooling stage, when the metal raw material is completely melted, the electric discharge valve is opened to allow the molten metal to flow into the tank body, and the first reduction motor is started. The output shaft of the first reduction motor drives the first transmission wheel to rotate, and the first transmission wheel drives the second transmission wheel and the active bevel gear to rotate through the transmission belt, and the driven bevel gear and the hollow rod are driven to rotate through the active bevel gear, thereby driving the eccentric stirring drum and the triangular stirring frame to stir the molten metal. The eccentric stirring drum rotates eccentrically, which can form a more complex flow path for the metal slurry in the tank body, improve the heat exchange efficiency inside the metal slurry, thereby making the cooling more uniform and avoiding local overcooling or overheating. The eccentric stirring drum and the triangular stirring frame perform continuous and uniform stirring, which helps to maintain the uniformity of the metal slurry and prevent separation between different components. S4, gas injection, injecting inert gas into the tank through the first and second gas outlet pipes of the gas injection mechanism, and injecting it into the molten metal through the first and second one-way gas injection nozzles, so as to achieve gas injection while stirring. The first and second one-way gas injection nozzles ensure that the inert gas can only be sprayed in one direction, that is, toward the inside of the semi-solid metal slurry, which helps to evenly distribute the gas in the slurry and avoid the situation where the gas concentration in the local area is too high or too low. The first one-way gas injection nozzle follows the rotation of the eccentric mixing drum to inject gas, and the second one-way gas injection nozzle injects gas in all directions, which improves the The shearing and cooling effects provided are helpful for the formation of spherical crystals. On the one hand, bubbles, as nucleation cores, can produce refined crystals, improve the rheological properties of semi-solid metal slurry, make it more fluid, and facilitate subsequent molding processing. The inert gas is one of argon and nitrogen, which has good antioxidant properties. Injecting inert gas into the slurry can form a protective layer, reduce the chance of metal contact with air, and prevent metal oxidation. The injected inert bubbles can capture inclusions in the slurry during the rising process, help them float up and discharge, thereby purifying the metal slurry and improving the quality of the product. S5, cooling and molding, during the stirring process, the cooling mechanism is started at the same time, the rotating rod drives the second pulley to rotate, the second pulley drives the first pulley to work through the belt, the first pulley drives the impeller inside the first pulley to rotate, during the rotation of the impeller, the water pump inside the water pump pipe is sent to the first cooling jacket and the second cooling jacket, the cooling water circulates through the first cooling jacket and the second cooling jacket to cool the tank body, so that the metal liquid is gradually cooled to a semi-solid temperature range, and the circulating cooling water flows back to the chiller. During the cooling process, as the temperature drops, the solid phase content in the metal liquid gradually increases, and as the cooling proceeds, the solid phase particles in the metal liquid gradually grow, but due to the influence of stirring, these particles will not increase infinitely, but form relatively small and dispersed solid phase particles, these fine solid phase particles are evenly distributed, which helps to improve the fluidity of the slurry and the mechanical properties after molding; S6, exhaust stage: during the stirring and cooling process, the exhaust mechanism is started, the solenoid valve is opened, and the excess gas in the tank is extracted through the air pump and the exhaust head to reduce bubbles and improve the slurry quality; S7, metal slurry conveying. When the metal slurry reaches the set semi-solid state, the discharge valve is opened to allow the slurry to flow into the conveying barrel. The rotating rod drives the second conveying screw to rotate. The second conveying screw drives the first conveying screw to rotate through the gear. The slurry is conveyed forward by the mutual meshing rotation of the first conveying screw and the second conveying screw. The electric heating ring on the conveying barrel maintains the temperature of the slurry to ensure that it remains in a semi-solid state during the conveying process. After being conveyed to the destination, the semi-solid metal slurry is sent to the subsequent molding equipment for molding processing.

[0018] Beneficial effects of the present invention: 1. The present invention uses an eccentric stirring drum and a triangular stirring frame to form a complex flow path for the molten metal in the tank body, thereby improving the heat exchange efficiency inside the molten metal and ensuring more uniform cooling. The active bevel gear drives the driven bevel gear and the hollow rod to achieve efficient and controllable stirring action, which helps to maintain the uniformity of the metal slurry and prevent separation between different components. The first temperature sensor and the first pressure sensor monitor the temperature and pressure in the tank body in real time to ensure the stability of the temperature and pressure during the production process and prevent excessive pressure caused by stirring or gas injection. A plurality of first one-way gas injection nozzles are installed on the left side of the eccentric stirring drum and are connected to the hollow rod through the gas outlet channel to ensure uniform injection of inert gas during stirring and avoid excessively high or low gas concentration in local areas. The discharge valve fixed at the center of the bottom of the tank body helps to control the discharge of the metal slurry.

[0019] 2. The present invention generates high-frequency vibrations through an ultrasonic generator, and the transducer converts electrical energy into mechanical vibration energy to generate high-intensity ultrasonic waves, which are transmitted to the metal slurry inside the tank body, promoting the refinement of solid phase particles in the metal slurry and forming a more uniform microstructure, thereby improving the quality of the final product.

[0020] 3. The first air pressure regulating valve and the second air pressure regulating valve of the present invention monitor the flow rate of the inert gas through the first flow meter and the second flow meter, and detect the air pressure through the second air pressure sensor to ensure that an appropriate amount of inert gas is injected into the tank body, thereby improving the accuracy of gas injection. The bottom of the annular tube is connected to a plurality of second air outlet pipes, and the surface of the second air outlet pipe is connected to a second one-way air injection nozzle, so that the inert gas can be uniformly injected from multiple angles. In conjunction with the first one-way air injection nozzle, an all-round air injection effect is achieved, which is conducive to the uniform distribution of the gas in the slurry. The injected inert bubbles serve as the core of non-spontaneous nucleation, promote grain refinement, improve the microstructure of the metal material, improve its mechanical properties, improve the rheological properties of the semi-solid metal slurry, make it more fluid, and facilitate subsequent molding processing. The inert gas has good antioxidant properties. The injection of inert gas can form a protective layer, reduce the chance of metal contact with air, and prevent metal oxidation. The injected inert bubbles can capture inclusions in the slurry during the rising process and help them float up and discharge, thereby purifying the metal slurry and improving the quality of the product.

[0021] 4. The present invention can cool the tank body by using the first cooling jacket and the second cooling jacket in coordination, so that the metal liquid is gradually cooled to a semi-solid temperature range, and the circulating cooling water flows back to the chiller. During the cooling process, as the temperature drops, the solid phase content in the metal liquid gradually increases, and the metal slurry enters a semi-solid state. As the cooling proceeds, the solid phase particles in the metal liquid gradually grow, but due to the influence of stirring, these particles will not increase indefinitely, but form relatively small and dispersed solid phase particles. These fine solid phase particles are evenly distributed, which helps to improve the fluidity of the slurry and the mechanical properties after molding.

[0022] 5. The present invention drives the second conveying screw to rotate through a rotating rod, and the second conveying screw drives the first conveying screw to rotate through a gear. The slurry is conveyed forward by the mutual meshing rotation of the first conveying screw and the second conveying screw. The electric heating ring on the conveying cylinder maintains the temperature of the slurry to ensure that it remains in a semi-solid state during the conveying process. After being conveyed to the destination, the semi-solid metal slurry is sent to the subsequent molding equipment for molding processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the forming mechanism of the present invention; Figure 3 It is a front cross-sectional view of the molding mechanism of the present invention; Figure 4 An exploded view of the conveying mechanism of the present invention; Figure 5 It is a schematic diagram of the main structure of the melting mechanism of the present invention; Figure 6 It is a left-side structural schematic diagram of the melting mechanism of the present invention; Figure 7 It is a schematic diagram of the front view of the gas injection mechanism of the present invention; Figure 8 It is a schematic diagram of the main structure of the air extraction mechanism of the present invention; Fig. 9 It is a schematic diagram of the front view structure of the cooling mechanism of the present invention; Fig.10 It is a left-side structural schematic diagram of the cooling mechanism of the present invention.

[0024] In the figure: 100, forming mechanism; 101, tank body; 102, first temperature sensor; 103, first pressure sensor; 104, driving bevel gear; 105, hollow rod; 106, driven bevel gear; 107, limit cover; 108, eccentric mixing drum; 109, triangular mixing frame; 110, support seat; 111, air outlet channel; 112, first one-way air injection nozzle; 113, transducer; 114, discharge valve; 200, conveying mechanism; 2 01, base; 202, first conveying screw; 203, second conveying screw; 204, second temperature sensor; 205, electric heating ring; 206, conveying cylinder; 207, second transmission wheel; 208, transmission belt; 209, controller; 210, frame; 211, ultrasonic generator; 212, first reduction motor; 213, first transmission wheel; 214, rotating rod; 215, gear; 300, melting mechanism; 301, melting tank; 302 , material feeding speed control valve; 303, hopper; 304, fixed plate; 305, second reduction motor; 306, heater; 307, electric discharge valve; 308, heat preservation cover; 309, stirring assembly; 400, gas injection mechanism; 401, air inlet pipe; 402, first air pressure regulating valve; 403, first flow meter; 404, second air pressure sensor; 405, first air outlet pipe; 406, limiter; 407, second one-way gas injection nozzle; 408, Second air outlet pipe; 409, annular pipe; 410, second flow meter; 411, second air pressure regulating valve; 500, air extraction mechanism; 501, air pump; 502, air extraction pipe; 503, solenoid valve; 504, air extraction head; 600, cooling mechanism; 601, first cooling jacket; 602, second cooling jacket; 603, pump body; 604, first pulley; 605, belt; 606, second pulley; 607, water extraction pipe; 608, reflux pipe. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] Embodiment 1, as Figure 1-Figure 10As shown, this embodiment provides a continuous semi-solid pulping equipment, including a forming mechanism 100, the forming mechanism 100 includes a tank body 101, a first temperature sensor 102 and a first pressure sensor 103 are fixedly installed on the top of the tank body 101, a support seat 110 is fixedly connected to the top of the surface of the tank body 101, a hollow rod 105 is rotatably connected at the center of the top of the tank body 101, a driven bevel gear 106 is fixedly sleeved on the surface of the hollow rod 105, a driving bevel gear 104 is meshed on the top of the driven bevel gear 106, a limiting cover 107 is rotatably connected to the surface of the hollow rod 105, the limiting cover 107 is fixedly installed on the top of the inner wall of the tank body 101, an eccentric stirring drum 108 is fixedly connected to the bottom of the hollow rod 105, a triangular stirring frame 109 is fixedly connected to the bottom of the eccentric stirring drum 108, and the triangular stirring frame 109 is movably connected to the bottom of the inner wall of the tank body 101.

[0027] Furthermore, a plurality of first one-way gas injection nozzles 112 are fixedly installed on the left side of the eccentric mixing drum 108, and an air outlet channel 111 connected to the first one-way gas injection nozzle 112 is opened inside the eccentric mixing drum 108. The air outlet channel 111 is connected to the hollow rod 105. A discharge valve 114 is fixedly installed at the center of the bottom of the tank body 101, and a plurality of transducers 113 are installed around the bottom of the tank body 101.

[0028] By using the eccentric stirring drum 108 and the triangular stirring frame 109 in coordination, a complex flow path is formed in the molten metal in the tank body 101, thereby improving the heat exchange efficiency inside the molten metal and ensuring more uniform cooling. The active bevel gear 104 drives the driven bevel gear 106 and the hollow rod 105 to achieve efficient and controllable stirring action, which helps to maintain the uniformity of the metal slurry and prevent separation between different components. The first temperature sensor 102 and the first pressure sensor 103 monitor the temperature and pressure in the tank body 101 in real time to ensure the stability of the temperature and pressure during the production process and prevent excessive pressure caused by stirring or gas injection. A plurality of first one-way gas injection nozzles 112 are installed on the left side of the eccentric stirring drum 108, and are connected to the hollow rod 105 through the gas outlet channel 111 to ensure that the inert gas is evenly injected during the stirring process and avoid excessively high or low gas concentration in local areas. The discharge valve 114 fixed at the bottom center of the tank body 101 helps to control the discharge of the metal slurry.

[0029] Furthermore, it also includes a conveying mechanism 200 , which is installed at the bottom of the forming mechanism 100 .

[0030] Furthermore, the conveying mechanism 200 includes a base 201, a conveying cylinder 206, a frame 210 and a first reduction motor 212 are fixedly connected to the top of the base 201, the inner wall of the frame 210 is rotatably connected to the second transmission wheel 207 and the first transmission wheel 213, the second transmission wheel 207 and the first transmission wheel 213 are connected to the surface of the transmission belt 208, the output shaft of the first reduction motor 212 is fixedly connected to the first transmission wheel 213, and the right side of the frame 210 is fixedly installed with a controller 209 and an ultrasonic generator 211, the left end of the second transmission wheel 207 is fixedly connected to the right end of the active bevel gear 104, and the left end of the first transmission wheel 213 is fixedly connected to the rotating rod 214.

[0031] Furthermore, the inside of the conveying barrel 206 is rotatably connected with the first conveying screw 202 and the second conveying screw 203 respectively, the right ends of the first conveying screw 202 and the second conveying screw 203 are fixedly sleeved with mutually meshing gears 215, the left end of the rotating rod 214 is fixedly connected to the right end of the second conveying screw 203, the feed end of the conveying barrel 206 is connected to the discharge end of the discharge valve 114, a plurality of electric heating rings 205 are fixedly sleeved on the surface of the conveying barrel 206, and a second temperature sensor 204 is fixedly installed on the left side of the top of the conveying barrel 206.

[0032] The ultrasonic generator 211 generates high-frequency vibrations, and the transducer 113 converts electrical energy into mechanical vibration energy to generate high-intensity ultrasonic waves. The ultrasonic waves are transmitted to the metal slurry inside the tank body 101, promoting the refinement of the solid phase particles in the metal slurry to form a more uniform microstructure. Through ultrasonic vibrations, defects in the slurry, such as pores and cracks, can be reduced, thereby improving the quality of the final product.

[0033] When ultrasonic waves propagate in the slurry, they will produce a cavitation effect, that is, tiny vacuum bubbles are formed in the liquid. When these bubbles burst, they will produce strong shock waves, which will help remove bubbles and impurities in the slurry. In addition, ultrasonic waves can enhance the stirring effect, making the solid particles in the slurry more evenly distributed in the liquid phase to prevent sedimentation or segregation.

[0034] Furthermore, it also includes a melting mechanism 300 , which is installed on the top of the molding mechanism 100 .

[0035] Furthermore, the melting mechanism 300 includes a melting tank 301, on the top of which a second reduction motor 305 and a feeding speed control valve 302 are fixedly installed, the output shaft of the second reduction motor 305 extends to the inner cavity of the melting tank 301 and is fixedly connected to a stirring assembly 309, a hopper 303 connected thereto is installed on the top of the feeding speed control valve 302, the rear sides of the melting tank 301 and the hopper 303 are fixedly connected to a fixed plate 304, the fixed plate 304 is fixedly installed on the surface of the tank body 101, an electric unloading valve 307 is fixedly installed on the bottom of the melting tank 301, and a heater 306 and a heat preservation cover 308 are fixedly sleeved on the surface of the melting tank 301, and the heater 306 is located in the inner cavity of the heat preservation cover 308.

[0036] Furthermore, it also includes a gas injection mechanism 400 , which is installed on the surface of the molding mechanism 100 .

[0037] Furthermore, the gas injection mechanism 400 includes an air inlet pipe 401, the right side of the air inlet pipe 401 is connected to a first air pressure regulating valve 402 and a second air pressure regulating valve 411 respectively, the outlet end of the first air pressure regulating valve 402 is connected to a first flow meter 403, the outlet end of the first flow meter 403 is connected to a first air outlet pipe 405, the bottom of the first air outlet pipe 405 is located in the inner cavity of the hollow rod 105 and is movably connected thereto, the surface of the first air outlet pipe 405 is fixedly connected to a limiting member 406, and the limiting member 406 is fixedly connected to the first air outlet pipe 405. It is fixedly installed on the top of the tank body 101, the outlet end of the second air pressure regulating valve 411 is connected to the second flow meter 410, the outlet end of the second flow meter 410 is connected to the annular tube 409, the bottom of the annular tube 409 is connected to several second air outlet pipes 408, the surface of the second air outlet pipe 408 is connected to the second one-way air injection nozzle 407, the second one-way air injection nozzle 407 penetrates into the inner cavity of the tank body 101, and the first air outlet pipe 405 and the top of the annular tube 409 are both installed with second air pressure sensors 404.

[0038] The first air pressure regulating valve 402 and the second air pressure regulating valve 411 monitor the flow rate of the inert gas through the first flow meter 403 and the second flow meter 410, and detect the air pressure through the second air pressure sensor 404, to ensure that an appropriate amount of inert gas is injected into the tank body 101, thereby improving the accuracy of gas injection. The bottom of the annular tube 409 is connected to a plurality of second air outlet pipes 408, and the surface of the second air outlet pipe 408 is connected to a second one-way air injection nozzle 407, so that the inert gas can be uniformly injected from multiple angles, and cooperate with the first one-way air injection nozzle 112 to achieve a full range of air injection effects, which is helpful for the gas to be injected into the slurry. The injected inert bubbles serve as the core of non-spontaneous nucleation, which promotes grain refinement, improves the microstructure of metal materials, and improves their mechanical properties. At the same time, the presence of bubbles can improve the rheological properties of semi-solid metal slurry, making it more fluid and convenient for subsequent forming processing. Inert gas has good antioxidant properties. Injecting inert gas can form a protective layer, reduce the chance of metal contact with air, and prevent metal oxidation. The injected inert bubbles can capture inclusions in the slurry during the rising process and help them float and discharge, thereby purifying the metal slurry and improving the quality of the product.

[0039] Furthermore, it also includes an air suction mechanism 500 , and the air inlet end of the air suction mechanism 500 is connected to the top of the molding mechanism 100 .

[0040] Furthermore, the vacuum mechanism 500 includes an air pump 501, which is fixedly installed on the top of the base 201. The air inlet end of the air pump 501 is connected to an air extraction pipe 502, and the air inlet end of the air extraction pipe 502 is connected to an electromagnetic valve 503. The bottom of the electromagnetic valve 503 is connected to an air extraction head 504, and the bottom of the air extraction head 504 passes through the inner cavity of the tank body 101.

[0041] Furthermore, a cooling mechanism 600 is included, and the cooling mechanism 600 is fixedly sleeved on the surface of the molding mechanism 100 .

[0042] Furthermore, the cooling mechanism 600 includes a first cooling jacket 601 and a second cooling jacket 602, the first cooling jacket 601 and the second cooling jacket 602 are fixedly sleeved on the surface of the tank body 101, the first cooling jacket 601 is connected to the second cooling jacket 602, a pump body 603 connected to the first cooling jacket 601 is installed at the bottom, the water inlet end of the pump body 603 is connected to a pumping pipe 607, the input end of the pump body 603 is fixedly sleeved with a first pulley 604, a second pulley 606 is provided on one side of the first pulley 604, the surfaces of the first pulley 604 and the second pulley 606 are transmission-connected with a belt 605, the second pulley 606 is fixedly sleeved on the surface of the rotating rod 214, and the water outlet ends of the first cooling jacket 601 and the second cooling jacket 602 are connected to a return pipe 608.

[0043] Furthermore, the gas injection mechanism 400 is connected to an inert gas supply device so that the inert gas flows inside the gas injection mechanism 400 .

[0044] Furthermore, the air outlet end of the air extraction mechanism 500 is connected to the waste gas treatment equipment to purify and filter the extracted waste gas.

[0045] Furthermore, the water pumping pipe 607 and the return pipe 608 are connected to the chiller, so that the cooling water flows inside the first cooling jacket 601 and the second cooling jacket 602 .

[0046] Furthermore, the temperature change in the tank body 101 is monitored in real time by the first temperature sensor 102 to ensure that the molten metal is gradually cooled to a semi-solid temperature range.

[0047] Furthermore, the pressure in the tank body 101 is monitored by the first pressure sensor 103 to prevent excessive pressure caused by stirring or gas injection and to ensure that the pressure is stable during the gas extraction process.

[0048] Furthermore, the flow rate of the inert gas is monitored by the first flow meter 403 and the second flow meter 410 to ensure that a proper amount of inert gas is injected into the tank body 101 .

[0049] Furthermore, the air pressure inside the first air outlet pipe 405 and the annular tube 409 can be detected by the second air pressure sensor 404, and the detected data is transmitted to the controller 209. The controller 209 controls the operation of the first air pressure regulating valve 402 and the second air pressure regulating valve 411 according to the detected air pressure, thereby controlling the pressure of the injected inert gas.

[0050] Furthermore, the temperature inside the conveying tube 206 is monitored by the second temperature sensor 204 to ensure that the slurry remains in the semi-solid temperature range during the conveying process. According to the temperature detection data, the heating power of the electric heating ring 205 on the conveying tube 206 is adjusted by the controller 209 to maintain the slurry temperature.

[0051] Embodiment 2, as Figure 1-Figure 10 As shown, this embodiment provides a continuous semi-solid pulping process, comprising the following steps: S1, raw material preparation, placing the required metal raw materials in the hopper 303, controlling the material discharge speed of the hopper 303 by the material discharge speed control valve 302, and preparing to enter the melting stage; S2, melting stage, the metal raw material particles enter the melting tank 301, the melting mechanism 300 is started, and the stirring assembly 309 is driven to rotate by the second reduction motor 305 to stir the metal raw material in the melting tank 301. During the stirring process, the heater 306 provides a stable heat source for the melting tank 301 to ensure that the metal raw material is completely melted; S3, stirring and cooling stage, when the metal raw material is completely melted, the electric discharge valve 307 is opened to allow the molten metal to flow into the tank body 101, and the first reduction motor 212 is started. The output shaft of the first reduction motor 212 drives the first transmission wheel 213 to rotate, and the first transmission wheel 213 drives the second transmission wheel 207 and the active bevel gear 104 to rotate through the transmission belt 208, and drives the driven bevel gear 106 and the hollow rod 105 to rotate through the active bevel gear 104, thereby driving the eccentric stirring drum 108 and the triangular stirring frame 109 to stir the molten metal. The eccentric stirring drum 108 rotates in an eccentric direction, which can form a more complex flow path for the metal slurry in the tank body 101, improve the heat exchange efficiency inside the metal slurry, thereby making the cooling more uniform and avoiding local overcooling or overheating. The eccentric stirring drum 108 and the triangular stirring frame 109 perform continuous and uniform stirring, which helps to maintain the uniformity of the metal slurry and prevent separation between different components; S4, gas injection, inert gas is injected into the tank body 101 through the first gas outlet pipe 405 and the second gas outlet pipe 408 of the gas injection mechanism 400, and injected into the molten metal through the first one-way gas injection nozzle 112 and the second one-way gas injection nozzle 407, so as to achieve gas injection while stirring. The one-way gas injection nozzle 112 and the second one-way gas injection nozzle 407 ensure that the inert gas can only be sprayed in one direction, that is, toward the inside of the semi-solid metal slurry, which helps to evenly distribute the gas in the slurry and avoid the situation where the gas concentration in the local area is too high or too low. The first one-way gas injection nozzle 112 follows the rotation of the eccentric stirring drum 108 to inject gas, and the second one-way gas injection nozzle 407 All-around gas injection provides shearing and cooling effects to help form spherical crystals. On the other hand, bubbles, as nucleation cores, can produce refined crystals. The presence of bubbles can improve the rheological properties of semi-solid metal slurry, making it more fluid and convenient for subsequent molding. Inert gas is one of argon and nitrogen, which has good antioxidant properties. Injecting inert gas into the slurry can form a protective layer, reduce the chance of metal contact with air, and prevent metal oxidation. The injected inert bubbles can capture inclusions in the slurry during the rising process, helping them float up and discharge, thereby purifying the metal slurry and improving the quality of the product. S5, cooling and molding. During the stirring process, the cooling mechanism 600 is started at the same time. The rotating rod 214 drives the second pulley 606 to rotate. The second pulley 606 drives the first pulley 604 to work through the belt 605. The first pulley 604 drives the impeller inside the first pulley 604 to rotate. During the rotation of the impeller, the water pump inside the water pumping pipe 607 is sent to the first cooling jacket 601 and the second cooling jacket 602. The cooling water circulates through the first cooling jacket 601 and the second cooling jacket 602 to cool the tank body 101, so that the metal liquid is gradually cooled to a semi-solid temperature range. The circulating cooling water flows back to the chiller. During the cooling process, as the temperature drops, the solid phase content in the metal liquid gradually increases. When the solid phase content reaches a certain proportion, the metal slurry enters a semi-solid state. As the cooling proceeds, the solid phase particles in the metal liquid gradually grow. However, due to the influence of stirring, these particles will not increase infinitely, but form relatively small and dispersed solid phase particles. These fine solid phase particles are evenly distributed, which helps to improve the fluidity of the slurry and the mechanical properties after molding. S6, exhaust stage: during the stirring and cooling process, the exhaust mechanism 500 is started, the solenoid valve 503 is opened, and the excess gas in the tank body 101 is extracted through the air pump 501 and the exhaust head 504 to reduce bubbles and improve the slurry quality; S7, metal slurry transportation. When the metal slurry reaches the set semi-solid state, the discharge valve 114 is opened to allow the slurry to flow into the conveying barrel 206. The rotating rod 214 drives the second conveying screw 203 to rotate. The second conveying screw 203 drives the first conveying screw 202 to rotate through the gear 215. The slurry is transported forward by the mutual meshing rotation of the first conveying screw 202 and the second conveying screw 203. The electric heating ring 205 on the conveying barrel 206 maintains the temperature of the slurry to ensure that it remains in a semi-solid state during the conveying process. After being transported to the destination, the semi-solid metal slurry is sent to the subsequent molding equipment for molding processing.

Claims

1. A continuous semi-solid pulping device, characterized in that: include, Forming mechanism (100); A conveying mechanism (200), wherein the conveying mechanism (200) is installed at the bottom of the forming mechanism (100); A melting mechanism (300), wherein the melting mechanism (300) is installed on the top of the forming mechanism (100); An air injection mechanism (400), wherein the air injection mechanism (400) is installed on the surface of the molding mechanism (100); An air extraction mechanism (500), wherein an air inlet end of the air extraction mechanism (500) is connected to the top of the molding mechanism (100); A cooling mechanism (600), wherein the cooling mechanism (600) is fixedly sleeved on the surface of the forming mechanism (100).

2. The continuous semi-solid pulping equipment according to claim 1, characterized in that: The forming mechanism (100) comprises a tank body (101), the top of which is respectively fixedly mounted a first temperature sensor (102) and a first pressure sensor (103), the top of the surface of the tank body (101) being fixedly connected to a support seat (110), a hollow rod (105) being rotatably connected to the center of the top of the tank body (101), a driven bevel gear (106) being fixedly sleeved on the surface of the hollow rod (105), a driving bevel gear (104) being meshed on the top of the driven bevel gear (106), a limit cover (107) being rotatably connected to the surface of the hollow rod (105), the limit cover (107) being fixedly mounted on the top of the inner wall of the tank body (101), an eccentric stirring drum (108) being fixedly connected to the bottom of the eccentric stirring drum (108), a triangular stirring frame (109) being fixedly connected to the bottom of the inner wall of the tank body (101), and the triangular stirring frame (109) being movably connected to the bottom of the inner wall of the tank body (101).

3. The continuous semi-solid pulping equipment according to claim 2, characterized in that: A plurality of first one-way gas injection nozzles (112) are fixedly mounted on the left side of the eccentric mixing drum (108); a gas outlet channel (111) connected to the first one-way gas injection nozzle (112) is provided inside the eccentric mixing drum (108); the gas outlet channel (111) is connected to the hollow rod (105); a discharge valve (114) is fixedly mounted at the center of the bottom of the tank body (101); and a plurality of transducers (113) are mounted around the bottom of the tank body (101).

4. The continuous semi-solid pulping equipment according to claim 3, characterized in that: The conveying mechanism (200) comprises a base (201); a conveying cylinder (206), a frame (210) and a first reduction motor (212) are fixedly connected to the top of the base (201); a second transmission wheel (207) and a first transmission wheel (213) are rotatably connected to the inner wall of the frame (210); a transmission belt (208) is transmission-connected to the surfaces of the second transmission wheel (207) and the first transmission wheel (213); an output shaft of the first reduction motor (212) is fixedly connected to the first transmission wheel (213); a controller (209) and an ultrasonic generator (211) are fixedly mounted on the right side of the frame (210); the left end of the second transmission wheel (207) is fixedly connected to the right end of the active bevel gear (104); and the left end of the first transmission wheel (213) is fixedly connected to a rotating rod (214).

5. The continuous semi-solid pulping equipment according to claim 4, characterized in that: The conveying barrel (206) is rotatably connected to a first conveying screw (202) and a second conveying screw (203) respectively; the right ends of the first conveying screw (202) and the second conveying screw (203) are fixedly sleeved with mutually meshing gears (215); the left end of the rotating rod (214) is fixedly connected to the right end of the second conveying screw (203); the feeding end of the conveying barrel (206) is connected to the discharging end of the discharging valve (114); a plurality of electric heating rings (205) are fixedly sleeved on the surface of the conveying barrel (206); and a second temperature sensor (204) is fixedly installed on the left side of the top of the conveying barrel (206).

6. The continuous semi-solid pulping equipment according to claim 5, characterized in that: The melting mechanism (300) comprises a melting tank (301), a second reduction motor (305) and a material discharge speed control valve (302) are fixedly mounted on the top of the melting tank (301), the output shaft of the second reduction motor (305) extends to the inner cavity of the melting tank (301) and is fixedly connected to a stirring assembly (309), a hopper (303) in communication with the material discharge speed control valve (302) is mounted on the top of the melting tank (301), the rear sides of the melting tank (301) and the hopper (303) are fixedly connected to a fixing plate (304), the fixing plate (304) is fixedly mounted on the surface of the tank body (101), an electric discharge valve (307) is fixedly mounted on the bottom of the melting tank (301), and a heater (306) and a heat preservation cover (308) are fixedly mounted on the surface of the melting tank (301), the heater (306) is located in the inner cavity of the heat preservation cover (308).

7. The continuous semi-solid pulping equipment according to claim 6, characterized in that: The gas injection mechanism (400) comprises an air inlet pipe (401), the right side of the air inlet pipe (401) is respectively connected to a first air pressure regulating valve (402) and a second air pressure regulating valve (411), the air outlet end of the first air pressure regulating valve (402) is connected to a first flow meter (403), the air outlet end of the first flow meter (403) is connected to a first air outlet pipe (405), the bottom of the first air outlet pipe (405) is located in the inner cavity of the hollow rod (105) and is movably connected thereto, the surface of the first air outlet pipe (405) is fixedly connected to a limiting member (406), and the limiting member (406) is fixedly connected to the inner cavity of the hollow rod (105). Installed on the top of the tank body (101), the second air pressure regulating valve (411) is connected to a second flow meter (410) at its outlet end, the second flow meter (410) is connected to an annular tube (409) at its outlet end, the annular tube (409) is connected to a plurality of second air outlet pipes (408) at its bottom, the second air outlet pipe (408) is connected to a second one-way air injection nozzle (407) on its surface, the second one-way air injection nozzle (407) penetrates into the inner cavity of the tank body (101), and second air pressure sensors (404) are installed on the tops of both the first air outlet pipe (405) and the annular tube (409).

8. The continuous semi-solid pulping equipment according to claim 7, characterized in that: The air extraction mechanism (500) comprises an air pump (501), the air pump (501) being fixedly mounted on the top of the base (201), the air inlet end of the air pump (501) being connected to an air extraction pipe (502), the air inlet end of the air extraction pipe (502) being connected to an electromagnetic valve (503), the bottom of the electromagnetic valve (503) being connected to an air extraction head (504), the bottom of the air extraction head (504) penetrating into the inner cavity of the tank body (101).

9. The continuous semi-solid pulping equipment according to claim 8, characterized in that: The cooling mechanism (600) comprises a first cooling jacket (601) and a second cooling jacket (602), wherein the first cooling jacket (601) and the second cooling jacket (602) are fixedly sleeved on the surface of the tank body (101), the first cooling jacket (601) and the second cooling jacket (602) are connected, a pump body (603) connected thereto is installed at the bottom of the first cooling jacket (601), a water inlet end of the pump body (603) is connected to a water pumping pipe (607), a first pulley (604) is fixedly sleeved on the input end of the pump body (603), a second pulley (606) is provided on one side of the first pulley (604), a belt (605) is connected to the surface of the first pulley (604) and the second pulley (606) in a transmission manner, the second pulley (606) is fixedly sleeved on the surface of the rotating rod (214), and a return pipe (608) is connected to the water outlet end of the first cooling jacket (601) and the second cooling jacket (602).

10. A continuous semi-solid pulping process, applicable to the continuous semi-solid pulping equipment according to any one of claims 1 to 9, characterized in that: The following steps are included: S1, raw material preparation, placing the required metal raw materials in the hopper (303), controlling the material discharge speed of the hopper (303) through the material discharge speed control valve (302), and preparing to enter the melting stage; S2, melting stage, the metal raw material particles enter the melting tank (301), the melting mechanism (300) is started, and the stirring assembly (309) is driven to rotate by the second reduction motor (305) to stir the metal raw material in the melting tank (301). During the stirring process, the heater (306) provides a stable heat source for the melting tank (301) to ensure that the metal raw material is completely melted; S3, stirring and cooling stage, when the metal raw material is completely melted, the electric discharge valve (307) is opened to allow the metal liquid to flow into the tank body (101), and the first reduction motor (212) is started. The output shaft of the first reduction motor (212) drives the first transmission wheel (213) to rotate, and the first transmission wheel (213) drives the second transmission wheel (207) and the driving bevel gear (104) to rotate through the transmission belt (208), and drives the driven bevel gear (106) and the hollow rod (105) to rotate through the driving bevel gear (104). This in turn drives the eccentric stirring drum (108) and the triangular stirring frame (109) to stir the molten metal. The eccentric stirring drum (108) rotates in an eccentric direction, so that the metal slurry forms a more complex flow path in the tank body (101), thereby improving the heat exchange efficiency inside the metal slurry, thereby making the cooling more uniform and avoiding local overcooling or overheating. The eccentric stirring drum (108) and the triangular stirring frame (109) perform continuous and uniform stirring, which helps to maintain the uniformity of the metal slurry and prevent separation between different components. S4, gas injection, injecting inert gas into the tank body (101) through the first gas outlet pipe (405) and the second gas outlet pipe (408) of the gas injection mechanism (400), and injecting it into the molten metal through the first one-way gas injection nozzle (112) and the second one-way gas injection nozzle (407), so as to achieve gas injection while stirring. The first one-way gas injection nozzle (112) and the second one-way gas injection nozzle (407) ensure that the inert gas can only be injected in one direction, that is, toward the inside of the semi-solid metal slurry, which helps to evenly distribute the gas in the slurry and avoid the situation where the gas concentration in a local area is too high or too low. The first one-way gas injection nozzle (112) follows the rotation of the eccentric stirring drum (108) to inject gas, and the second one-way gas injection nozzle (112) and the second one-way gas injection nozzle (407) are used to inject gas. The two one-way gas injection nozzles (407) inject gas in all directions, which, on the one hand, provide shearing and cooling effects to help form spherical crystals, and on the other hand, the bubbles, as nucleation cores, can produce refined crystals. In addition, the presence of bubbles can improve the rheological properties of the semi-solid metal slurry, making it more fluid and convenient for subsequent molding processing. The inert gas is one of argon and nitrogen, which has good anti-oxidation properties. Injecting the inert gas into the slurry can form a protective layer, reduce the chance of metal contact with air, and prevent metal oxidation. The injected inert bubbles can capture inclusions in the slurry during the rising process, helping them to float up and be discharged, thereby purifying the metal slurry and improving the quality of the product. S5, cooling and molding. During the stirring process, the cooling mechanism (600) is started at the same time. The rotating rod (214) drives the second pulley (606) to rotate. The second pulley (606) drives the first pulley (604) to work through the belt (605). The first pulley (604) drives the impeller inside the first pulley (604) to rotate. During the rotation of the impeller, the water pump inside the water pump pipe (607) is sent to the first cooling jacket (601) and the second cooling jacket (602). The cooling water circulates through the first cooling jacket (601) and the second cooling jacket (602). The tank body (101) is cooled to gradually cool the metal liquid to a semi-solid temperature range, and the circulating cooling water flows back into the chiller. During the cooling process, as the temperature drops, the solid content in the metal liquid gradually increases. When the solid content reaches a certain proportion, the metal slurry enters a semi-solid state. As the cooling proceeds, the solid particles in the metal liquid gradually grow. However, due to the influence of stirring, these particles will not grow infinitely, but will form relatively fine and dispersed solid particles. These fine solid particles are evenly distributed, which helps to improve the fluidity of the slurry and the mechanical properties after molding. S6, exhaust stage: during the stirring and cooling process, the exhaust mechanism (500) is started, the solenoid valve (503) is opened, and the excess gas in the tank (101) is exhausted through the air pump (501) and the exhaust head (504) to reduce bubbles and improve the slurry quality; S7, metal slurry conveying. When the metal slurry reaches a set semi-solid state, the discharge valve (114) is opened to allow the slurry to flow into the conveying barrel (206). The rotating rod (214) drives the second conveying screw (203) to rotate. The second conveying screw (203) drives the first conveying screw (202) to rotate via the gear (215). The slurry is conveyed forward by the mutual meshing rotation of the first conveying screw (202) and the second conveying screw (203). The electric heating ring (205) on the conveying barrel (206) maintains the temperature of the slurry to ensure that it remains in a semi-solid state during the conveying process. After being conveyed to the destination, the semi-solid metal slurry is sent to the subsequent molding equipment for molding processing.

Images