Foamed aluminum continuous production equipment

Abstract

According to the foamed aluminum continuous production equipment, an aluminum melting cavity and a heat preservation cavity are connected through a connecting channel with a one-way valve, the one-way valve controls molten aluminum to be conveyed from the aluminum melting cavity to the heat preservation cavity, continuous feeding and output of materials can be achieved by combining a top feeding port and a discharging port, and continuous production of foamed aluminum is guaranteed; the multiple stirring shafts work cooperatively, the first stirring shaft stirs materials in the aluminum melting cavity, and the second stirring shaft and the third stirring shaft stir materials in the heat preservation cavity. An air flow channel and an air outlet hole in the third stirring shaft can introduce air into the molten aluminum to form bubbles, a stopping plate is matched with a stirring shaft paddle, the bubbles can be more uniformly distributed in the molten aluminum, and the quality of foamed aluminum is improved; the first and second floating ball liquid level sensors monitor the liquid levels of the molten aluminum cavity and the heat preservation cavity respectively, and the controller controls opening and closing of the one-way valve, motor rotation speed and airflow pressure according to liquid level data. If the liquid level is low, the one-way valve is opened, and the motor rotating speed and airflow pressure are adjusted; and when the liquid level is too high, the one-way valve is closed to ensure stable production of the foamed aluminum.

Description

Technical Field

[0001] This application relates to the technical field of foamed aluminum production equipment, and particularly to a continuous production equipment for foamed aluminum. Background Art

[0002] In the field of metal material processing, foamed aluminum has excellent properties such as light weight, high strength, sound insulation, and heat insulation, and has broad application prospects in many industries such as aerospace, automotive manufacturing, and construction. However, there are many drawbacks in the traditional production methods of foamed aluminum. In the early stage, the powder metallurgy method was mostly used. This method has a complex production process and cumbersome procedures, and requires multiple steps such as powder preparation, pressing, and sintering. Not only is the production efficiency low, but the cost is also high, making it difficult to achieve large-scale continuous production. There are also some that use the casting method, but during the casting process, it is difficult to uniformly control the distribution of bubbles, resulting in unstable quality of foamed aluminum, more internal defects, and affecting its performance and application range.

[0003] As a material with excellent properties such as light weight, high strength, sound insulation, and heat insulation, foamed aluminum has broad application prospects in many fields such as aerospace, automotive manufacturing, and construction. However, in actual production, its traditional production methods have significant defects. On the one hand, when producing foamed aluminum by the powder metallurgy method, the process flow is extremely complex, covering multiple links such as powder preparation, pressing, and sintering. This not only leads to low production efficiency but also high costs, making it difficult to meet the requirements of large-scale continuous production. On the other hand, although the casting method is relatively simple, during the production process, it is difficult to precisely control the distribution of bubbles in the molten aluminum, resulting in unstable quality of the produced foamed aluminum and more internal defects, greatly limiting the performance and application range of foamed aluminum. These problems seriously restrict the wide application of foamed aluminum in the industrial field, and there is an urgent need for innovative production equipment and processes to solve them. Summary of the Invention

[0004] In an exemplary embodiment of this application, a continuous production equipment for foamed aluminum is provided to precisely control the transportation of molten aluminum between the molten aluminum cavity and the heat preservation cavity, ensure the continuity of the production process, and at the same time, by optimizing the settings of the stirring shaft and the paddle and the air flow control, make the bubbles evenly distributed in the molten aluminum and improve the quality of foamed aluminum.

[0005] This application provides a continuous production equipment for foamed aluminum, which includes a molten aluminum cavity, a feeding port, a heat preservation cavity, a discharging port, a stop baffle, a first motor, a first stirring shaft, a second motor, a second stirring shaft, a third motor, a third stirring shaft, a first thermocouple, a second thermocouple, a first heating rod, a second heating rod, a first float level sensor, a second float level sensor, a one-way valve, and a controller; The molten aluminum chamber and the heat preservation chamber are arranged side by side. A connection passage is provided between the molten aluminum chamber and the heat preservation chamber, and a one-way valve is provided on the connection passage. The one-way valve is used to control the one-way transportation of the aluminum liquid from the molten aluminum chamber to the heat preservation chamber; The feeding port is arranged at the top of the molten aluminum chamber. Materials are transported into the interior of the molten aluminum chamber through the feeding port. The first motor is fixedly arranged at the top of the molten aluminum chamber. The output end of the first motor is connected to the first stirring shaft. The first stirring shaft is arranged in the vertical direction, and a paddle is arranged at the end of the first stirring shaft; The discharge port is arranged at the top of the heat preservation chamber. The foam aluminum material is transported out through the discharge port. The second motor is fixedly arranged at the top of the heat preservation chamber. The output end of the second motor is connected to the second stirring shaft. The second stirring shaft is arranged in the vertical direction, and a paddle is arranged at the end of the second stirring shaft. The third motor is fixedly arranged at the bottom of the heat preservation chamber. The output end of the third motor is connected to the third stirring shaft. The third stirring shaft is arranged in the vertical direction, and a paddle is arranged at the end of the third stirring shaft. An air flow channel is arranged inside the third stirring shaft, and air outlet holes communicating with the air flow channel are arranged on the outer wall of the third stirring shaft; The stop baffle is arranged at the top of the heat preservation chamber and extends downward along the direction towards the bottom of the heat preservation chamber. The stop baffle is located between the second stirring shaft and the third stirring shaft in the width direction of the heat preservation chamber; The first float liquid level sensor and the second float liquid level sensor are respectively arranged inside the molten aluminum chamber and the heat preservation chamber and are respectively used to detect the liquid level heights of the aluminum liquid in the molten aluminum chamber and the heat preservation chamber; The controller is configured to: when the second liquid level height dimension of the second float liquid level sensor is less than the height dimension of the stop baffle, drive the one-way valve to open, reduce the rotation speeds of the second motor and the third motor, and increase the air flow pressure delivered to the air flow channel.

[0006] Further, the first thermocouple and the first heating rod are respectively arranged at the top and the bottom of the molten aluminum chamber.

[0007] Further, the second thermocouple and the second heating rod are respectively arranged at the top and the bottom of the heat preservation chamber.

[0008] Further, the paddle arranged on the third stirring shaft is located below the end of the stop baffle.

[0009] Further, the controller is also configured to: when the second liquid level height dimension of the second float liquid level sensor is greater than or equal to the height dimension of the stop baffle, drive the one-way valve to be in a closed state.

[0010] Further, the controller is further configured to: when the height dimension of the first surface of the first float liquid level sensor is less than the liquid level threshold, drive to emit an alarm signal, where the liquid level threshold is equal to the dimension of the check valve from the bottom of the molten aluminum cavity in the vertical direction.

[0011] Further, the paddle blades provided on the second stirring shaft are located below the end of the stop baffle.

[0012] Further, ceramic coatings are provided on the inner wall of the molten aluminum cavity, the inner wall of the heat preservation cavity, and the outer wall of the stop baffle.

[0013] Further, the air outlet holes are arranged around the outer wall of the third stirring shaft, and the air flow channel extends along the axis direction of the third stirring shaft.

[0014] The embodiments of the present application have the following beneficial effects: The molten aluminum cavity and the heat preservation cavity are connected by a connection path with a check valve. The check valve controls the transportation of molten aluminum from the molten aluminum cavity to the heat preservation cavity. Combined with the top feeding port and the discharging port, continuous input and output of materials can be realized, ensuring the continuous production of foamed aluminum; Multiple stirring shafts work together. The first stirring shaft stirs the materials in the molten aluminum cavity, and the second and third stirring shafts stir in the heat preservation cavity. The air flow channel and the air outlet holes in the third stirring shaft can introduce gas into the molten aluminum to form bubbles. The stop baffle cooperates with the paddle blades of the stirring shaft, enabling the bubbles to be more evenly distributed in the molten aluminum, improving the quality of foamed aluminum; The first and second float liquid level sensors respectively monitor the liquid levels of the molten aluminum cavity and the heat preservation cavity. The controller controls the opening and closing of the check valve, the rotation speed of the motor, and the air flow pressure according to the liquid level data. When the liquid level is low, the check valve is opened, and the rotation speed of the motor and the air flow pressure are adjusted; When the liquid level is too high, the check valve is closed to ensure the stable production of foamed aluminum. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Exemplarily shows a schematic structural diagram of a foamed aluminum continuous production device provided by an embodiment of the present application; Figure 2 Exemplarily shows a partial structural schematic diagram of the third stirring shaft provided by an embodiment of the present application; Figure 3 Exemplarily shows an electrical connection schematic diagram of a foamed aluminum continuous production device provided by an embodiment of the present application. Detailed Embodiments

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0018] To further illustrate the technical solution provided by the embodiment of the present application, this is described in detail below in conjunction with the accompanying drawings and specific implementation methods. Although the embodiment of the present application provides the method operation steps shown in the following embodiments or drawings, more or fewer operation steps may be included in the method based on routine or no creative labor. In the steps where there is no necessary causal relationship logically, the execution order of these steps is not limited to the execution order provided in the embodiment of the present application.

[0019] refer to Figures 1-3 As shown, the present application provides a foam aluminum continuous production equipment, which includes an aluminum melting chamber 11, a feeding port 12, an insulation chamber 21, a discharge port 22, a stop plate 23, a first motor 31, a first stirring shaft 41, a second motor 32, a second stirring shaft 42, a third motor 33, a third stirring shaft 43, a first thermocouple 51, a second thermocouple 52, a first heating rod 61, a second heating rod 62, a first float liquid level sensor 71, a second float liquid level sensor 72, a one-way valve 73 and a controller 74.

[0020] The aluminum melting chamber 11 and the heat preservation chamber 21 are arranged side by side. A connecting passage is set between the aluminum melting chamber 11 and the heat preservation chamber 21 and a one-way valve 73 is set on the connecting passage. The one-way valve 73 is used to control the aluminum liquid to be transported from the aluminum melting chamber 11 to the heat preservation chamber 21.

[0021] The function of the aluminum melting chamber 11 is to melt the material and provide aluminum liquid for subsequent production. A feeding port 12 is provided at the top to facilitate the input of materials. The first motor 31 drives the first stirring shaft 41 to stir the material, so that the material is heated more evenly and the melting efficiency is higher. The first thermocouple 51 and the first heating rod 61 are respectively arranged at the top and the bottom, which can accurately control the temperature in the aluminum melting chamber 11 to ensure that the material is fully melted.

[0022] In addition, the first float liquid level sensor 71 monitors the aluminum liquid level in real time. When the liquid level is lower than the height of the one-way valve 73 (liquid level threshold), the controller 74 drives to send out an alarm signal to avoid affecting production due to too low a liquid level and ensure the safety and continuity of production.

[0023] The main function of the heat preservation chamber 21 is to further process the molten aluminum from the molten aluminum chamber 11 to prepare aluminum foam and convey the finished product outwards. The discharge port 22 at the top is used to output the aluminum foam material. The second motor 32 drives the second stirring shaft 42, and the third motor 33 drives the third stirring shaft 43 to stir the molten aluminum. The air flow channel 431 and the air outlet holes 432 in the third stirring shaft 43 can introduce gas into the molten aluminum to form bubbles.

[0024] The stop baffle 23 is arranged at the top of the heat preservation chamber 21 and between the second and third stirring shafts 43. Cooperating with the blades located below the ends of the stirring shafts, it can optimize the distribution of bubbles in the molten aluminum and improve the quality of aluminum foam. The second thermocouple 52 and the second heating rod 62 are respectively arranged at the top and the bottom to maintain a suitable temperature in the heat preservation chamber 21 and ensure the stability of the production process. The second float level sensor 72 monitors the liquid level, providing a basis for the controller 74 to adjust the one-way valve 73, the motor speed and the air flow pressure, and ensuring the precise control of production.

[0025] The first thermocouple 51 and the first heating rod 61 are respectively arranged at the top and the bottom of the molten aluminum chamber 11, and the second thermocouple 52 and the second heating rod 62 are respectively arranged at the top and the bottom of the heat preservation chamber 21.

[0026] Ceramic coatings are provided on the inner wall of the molten aluminum chamber 11, the inner wall of the heat preservation chamber 21 and the outer wall of the stop baffle 23. The ceramic coatings are mainly used to block the direct contact between the metal components of the equipment and the internal molten aluminum, and at the same time optimize the physical environment inside the equipment. On the one hand, it avoids the erosion of the metal wall surface of the equipment by the molten aluminum at high temperature; on the other hand, taking advantage of the characteristics of ceramic materials, it creates more favorable conditions for the melting, stirring of the molten aluminum and the forming process of aluminum foam.

[0027] Setting ceramic coatings on the inner walls of the molten aluminum chamber 11 and the heat preservation chamber 21 can greatly improve the corrosion resistance of the equipment, effectively reduce the damage caused by the high-temperature erosion of the molten aluminum to the equipment, extend the service life of the equipment, reduce the equipment maintenance and replacement costs, and improve the continuity and stability of production.

[0028] Moreover, the ceramic coatings have good heat insulation performance, which can reduce heat loss, improve energy utilization efficiency and reduce production energy consumption. For the stop baffle 23, the ceramic coating can prevent it from being damaged due to frequent contact with the molten aluminum, ensure the stability and reliability of the stop baffle 23 in the process of controlling stirring and bubble distribution, contribute to improving the quality of aluminum foam products, and ensure the smooth progress of the production process. The feeding port 12 is arranged at the top of the molten aluminum chamber 11. Materials are conveyed into the interior of the molten aluminum chamber 11 through the feeding port 12. The first motor 31 is fixedly arranged at the top of the molten aluminum chamber 11. The output end of the first motor 31 is connected to the first stirring shaft 41. The first stirring shaft 41 is arranged vertically and blades are arranged at the end of the first stirring shaft 41.

[0029] The feeding port 12 is the channel for materials to enter the molten aluminum chamber 11, facilitating the input of the required materials for production into the molten aluminum chamber 11 for melting treatment. The first motor 31, the first stirring shaft 41 and the blades at its end form a stirring device. The first motor 31 provides power for stirring, the first stirring shaft 41 is responsible for transmitting power, and the blades stir the materials in the molten aluminum chamber 11 during rotation.

[0030] The setting of the feeding port 12 makes the material feeding operation simple, enabling various raw materials to be efficiently added into the molten aluminum chamber 11, providing the material basis for the subsequent preparation of aluminum liquid, and ensuring the smooth progress of the production process.

[0031] The first motor 31 drives the first stirring shaft 41 and the blades to stir, which can make the materials in the molten aluminum chamber 11 heat more evenly. This can accelerate the melting speed of the materials, improve the production efficiency, and avoid the situation of local overheating or insufficient melting, ensuring the stability of the molten aluminum quality. The uniform material melting process also helps to make the bubble distribution more uniform when preparing aluminum foam in the insulation chamber 21 subsequently, thereby improving the quality of the final aluminum foam product.

[0032] An outlet 22 is provided at the top of the insulation chamber 21. The aluminum foam material is transported out through the outlet 22. The second motor 32 is fixedly arranged at the top of the insulation chamber 21. The output end of the second motor 32 is connected to the second stirring shaft 42. The second stirring shaft 42 is arranged vertically and blades are provided at the end of the second stirring shaft 42. The third motor 33 is fixedly arranged at the bottom of the insulation chamber 21. The output end of the third motor 33 is connected to the third stirring shaft 43. The third stirring shaft 43 is arranged vertically and blades are provided at the end of the third stirring shaft 43.

[0033] The outlet 22 provides an output channel for the prepared aluminum foam material, realizing the product output link in the continuous production process. The second motor 32, the second stirring shaft 42 and the blades, together with the third motor 33, the third stirring shaft 43 and the blades, jointly constitute a stirring system. The second stirring shaft 42 is responsible for stirring the upper-layer aluminum liquid in the insulation chamber 21, and the third stirring shaft 43 is responsible for stirring the lower-layer aluminum liquid, so as to stir the aluminum liquid in all directions.

[0034] The setting of the outlet 22 ensures the smooth output of the finished aluminum foam, realizes continuous production, improves the production efficiency, and enables the equipment to stably and continuously supply aluminum foam products. The second motor 32 and the third motor 33 drive the stirring shafts and the blades to stir, which can make the aluminum liquid and the foaming gas fully mixed. Through stirring at different upper and lower positions, the bubbles are evenly dispersed in the aluminum liquid, thereby improving the quality of the aluminum foam, reducing the internal defects of the product, and enhancing the product performance.

[0035] An air flow channel 431 is arranged inside the third stirring shaft 43, and air outlet holes 432 communicating with the air flow channel 431 are arranged on the outer wall of the third stirring shaft 43. The air outlet holes 432 are arranged around the outer wall of the third stirring shaft 43, and the air flow channel 431 extends along the axial direction of the third stirring shaft 43.

[0036] The first motor 31, the second motor 32 and the third motor 33 are electrically connected to the controller 74, and the controller 74 controls the rotation speeds of the first motor 31, the second motor 32 and the third motor 33.

[0037] The one-way valve 73 is electrically connected to the controller 74, and the controller 74 controls the opening or closing of the one-way valve 73.

[0038] The air flow channel 431 inside the third stirring shaft 43 and the air outlet holes 432 on the outer wall form a system for introducing gas into the molten aluminum. While stirring the molten aluminum, the air flow channel 431 is used to transport gas, and the air outlet holes 432 uniformly release the gas into the molten aluminum, enabling the gas to diffuse in the molten aluminum and creating conditions for preparing aluminum foam. The circumferential arrangement of the air outlet holes 432 and the axial extension of the air flow channel 431 can ensure that the gas is uniformly discharged in the molten aluminum and mixed with the molten aluminum in all directions.

[0039] The gas uniformly enters the molten aluminum through the air outlet holes 432 and fully contacts the molten aluminum, making the foaming gas more uniformly distributed in the molten aluminum. This helps to form a fine and uniform bubble structure and improve the quality and performance stability of the aluminum foam.

[0040] Continuous ventilation during the stirring process ensures the continuity of the foaming process and improves production efficiency. The circumferentially arranged air outlet holes 432 cooperate with the axially extending air flow channel 431, enabling the molten aluminum to uniformly contact the gas across the entire cross-section and avoiding the problem of uneven gas distribution in local areas.

[0041] The baffle plate 23 is arranged at the top of the heat preservation cavity 21 and extends downward in the direction towards the bottom of the heat preservation cavity 21. The baffle plate 23 is located between the second stirring shaft 42 and the third stirring shaft 43 in the width direction of the heat preservation cavity 21.

[0042] The baffle plate 23 is arranged at the top of the heat preservation cavity 21 and extends downward, and is located between the second and third stirring shafts 43. Its main function is to intervene in the flow of the molten aluminum and gas stirred in the heat preservation cavity 21. It can divide and guide the flow field of the molten aluminum and the diffusion path of the gas formed by the stirring of different stirring shafts in space, and optimize the movement state of the internal materials.

[0043] During the stirring process, the baffle 23 can block the flow of part of the molten aluminum, causing the molten aluminum stirred by the second stirring shaft 42 and the third stirring shaft 43 to form different flow regions, enhancing the stirring effect, promoting more sufficient mixing of the molten aluminum and the gas, so that the bubbles are more evenly distributed in the molten aluminum, and improving the quality of the aluminum foam product.

[0044] Moreover, the baffle 23 can play a certain role in blocking and dispersing the gas introduced into the third stirring shaft 43, preventing the gas from directly rising and escaping quickly, prolonging the residence time of the gas in the molten aluminum, further ensuring sufficient contact between the gas and the molten aluminum, helping to improve the foaming efficiency, and ensuring the stability and continuity of the aluminum foam production.

[0045] The blades provided on the third stirring shaft 43 are located below the end of the baffle 23, and the blades provided on the second stirring shaft 42 are located below the end of the baffle 23.

[0046] This positional relationship between the stirring shaft blades and the baffle 23 is to make the stirring process cooperate with the function of the baffle 23. When the blades stir below the baffle 23, the blocking and guiding effects of the baffle 23 on the flow of the molten aluminum and the diffusion of the gas can be utilized to better control the movement trajectory of the molten aluminum and the distribution range of the gas, enhance the stirring effect, and achieve more sufficient mixing of the molten aluminum and the gas.

[0047] On the one hand, the bubble uniformity can be improved. The stirring of the blades below the baffle 23 can make the gas more evenly dispersed in the molten aluminum, preventing the gas from aggregating and floating up. Because the baffle 23 can block part of the gas, causing the gas to repeatedly mix with the molten aluminum under the stirring of the blades, which helps to form fine and evenly distributed bubbles, thereby improving the quality and performance stability of the aluminum foam.

[0048] On the other hand, the stirring efficiency is enhanced. The baffle 23 limits the flow range of the molten aluminum, so that when the blades stir, the molten aluminum forms stronger eddies in a relatively small area, improving the intensity and efficiency of the stirring. This not only speeds up the mixing speed of the molten aluminum and the gas, but also makes the temperature of the molten aluminum more uniform, which is beneficial to a stable foaming reaction, improves the production efficiency, reduces the production time, and lowers the production cost.

[0049] The first float level sensor 71 and the second float level sensor 72 are respectively arranged inside the molten aluminum cavity 11 and the heat preservation cavity 21 and are respectively used to detect the liquid level height of the molten aluminum in the molten aluminum cavity 11 and the heat preservation cavity 21.

[0050] The controller 74 is configured to: when the second liquid level height dimension of the second float level sensor 72 is less than the height dimension of the baffle 23, drive the one-way valve 73 to open and reduce the rotation speeds of the second motor 32 and the third motor 33, and increase the air flow pressure delivered to the air flow channel 431.

[0051] The second float liquid level sensor 72 monitors the height of the molten aluminum liquid level in the heat preservation cavity 21 in real time. When the height dimension of the second liquid level is smaller than the height dimension of the stop baffle 23, it indicates that the amount of molten aluminum in the heat preservation cavity 21 is insufficient. At this time, the one-way valve 73 is opened, and the molten aluminum in the melting cavity 11 can flow into the heat preservation cavity 21 to supplement the amount of molten aluminum.

[0052] Reducing the rotational speeds of the second and third motors 33 is to avoid the problems of idling or uneven stirring caused by high-speed stirring when the amount of molten aluminum is insufficient; increasing the air flow pressure in the air flow channel 431 aims to ensure that the gas can be evenly dispersed in the molten aluminum and maintain the foaming effect even when the amount of molten aluminum is relatively small.

[0053] When the liquid level in the heat preservation cavity 21 is lower than the height of the stop baffle 23, the total amount of molten aluminum is less. If high-speed stirring is maintained, it may lead to energy waste and increased local turbulence. Reducing the rotational speed can reduce the consumption of mechanical energy and avoid damaging the formed cell structure due to high-speed stirring.

[0054] When the stirring rotational speed is reduced, the circulation speed of the molten aluminum slows down, and the gas may be difficult to be evenly dispersed through natural convection. Increasing the air flow pressure can force the gas to be ejected at high speed through the air holes 432 of the third stirring shaft 43, forming microbubbles and penetrating the molten aluminum layer to avoid bubble aggregation or too fast floating.

[0055] When the liquid level is low, the volume of the molten aluminum in the heat preservation cavity 21 decreases. If the stirring intensity is insufficient, it is easy to cause violent liquid level fluctuations, affecting the stability of the cells. Increasing the air flow pressure can stabilize the liquid level through the gas dynamics effect and assist the stop baffle 23 in suppressing the eddy current.

[0056] By increasing the air flow pressure, when the motor rotational speed is reduced, it can ensure that the gas has enough power to penetrate the molten aluminum, making the bubble distribution more uniform. Avoid the situation of gas aggregation or different bubble sizes caused by insufficient stirring, effectively improving the internal structure uniformity and quality stability of the aluminum foam. This operation also ensures the continuity of the production process and does not interrupt the foaming due to the supplement of molten aluminum and the adjustment of the motor rotational speed.

[0057] Optionally, a gas compressor or a booster pump is installed on the gas delivery pipeline. The gas compressor increases the pressure of the gas by mechanical compression, compresses the low-pressure gas into high-pressure gas and then transports it to the air flow channel 431. A regulating valve, such as a throttle valve, a pressure reducing valve, etc., is set on the gas delivery pipeline. By closing part of the throttle valve and reducing the cross-sectional area of the gas flow, according to the principle of fluid mechanics, the gas flow rate will increase and the pressure will increase accordingly, so as to realize the increase of the gas pressure in the air flow channel 431.

[0058] Installing the gas compressor or the booster pump and setting the regulating valve on the gas delivery pipeline are electrically connected to the controller 74.

[0059] Furthermore, the controller 74 is also configured to: if the height dimension of the second liquid level of the second float liquid level sensor 72 is greater than or equal to the height dimension of the stop plate 23, drive the one-way valve 73 to a closed state.

[0060] The second float liquid level sensor 72 monitors the aluminum liquid level in the insulation chamber 21 in real time. When the second liquid level is greater than or equal to the height of the stop plate 23, it means that the amount of aluminum liquid in the insulation chamber 21 has reached or exceeded the appropriate range. At this time, the controller 74 drives the one-way valve 73 to close in order to prevent the aluminum liquid in the aluminum melting chamber 11 from continuing to flow into the insulation chamber 21, thereby avoiding excessive aluminum liquid in the insulation chamber 21.

[0061] This avoids excessive aluminum liquid, ensures that the amount of aluminum liquid in the insulation chamber 21 is at a reasonable level, prevents excessive aluminum liquid from affecting the stirring effect and bubble distribution, and thus ensures the production quality of foamed aluminum. Stabilizes the production environment, prevents unstable equipment operation caused by excessive aluminum liquid, such as excessive motor load, etc., prolongs the service life of the equipment, and reduces equipment maintenance costs.

[0062] Furthermore, the controller 74 is also configured to drive an alarm signal if the height dimension of the first surface of the first float liquid level sensor 71 is less than the liquid level threshold, and the liquid level threshold is equal to the vertical dimension of the one-way valve 73 from the bottom of the aluminum melting chamber 11.

[0063] The first float liquid level sensor 71 is used to monitor the liquid level of the aluminum liquid in the aluminum melting chamber 11 in real time. The liquid level threshold is set as the vertical dimension of the one-way valve 73 from the bottom of the aluminum melting chamber 11. When the first float liquid level sensor 71 detects that the height dimension of the first surface is less than the liquid level threshold, it indicates that the amount of aluminum liquid in the aluminum melting chamber 11 is insufficient. At this time, the controller 74 drives to send an alarm signal to remind the operator to handle it in time to ensure the normal production.

[0064] Technical effect: To prevent production interruption, when the liquid level is too low and close to the one-way valve 73, if the aluminum liquid is not replenished in time, the one-way valve 73 may inhale air, affecting the process of aluminum liquid being transported to the insulation chamber 21, and even making production unable to proceed continuously. The alarm signal allows the operator to add materials in time to avoid this situation and ensure the continuity of production.

[0065] To ensure product quality, a stable aluminum liquid level is an important factor in ensuring the quality of aluminum foam production. If the liquid level is too low, the material will be melted and stirred unevenly, affecting the subsequent foaming effect and internal structure of the aluminum foam.

[0066] Timely intervention through alarm can maintain the stability of aluminum liquid level and ensure product quality. Protect equipment safety. Too low liquid level may cause the stirring blade to run idle, aggravate equipment wear, shorten equipment service life, and in severe cases may damage key components such as motors.

[0067] This application is described with reference to the flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing device produce means for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0068] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0069] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one flow Figure 1 one flow or multiple flows and / or blocks Figure 1 or multiple blocks.

[0070] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

Claims

1. A foam aluminum continuous production equipment, characterized in that: It includes an aluminum melting chamber, a feeding port, a heat preservation chamber, a discharging port, a stop plate, a first motor, a first stirring shaft, a second motor, a second stirring shaft, a third motor, a third stirring shaft, a first thermocouple, a second thermocouple, a first heating rod, a second heating rod, a first float liquid level sensor, a second float liquid level sensor, a one-way valve and a controller; The aluminum melting chamber and the heat preservation chamber are arranged side by side, a connecting passage is arranged between the aluminum melting chamber and the heat preservation chamber, and the one-way valve is arranged on the connecting passage, and the one-way valve is used to control the one-way transportation of aluminum liquid from the aluminum melting chamber to the heat preservation chamber; The feeding port is arranged at the top of the aluminum melting chamber, and the material is transported to the inside of the aluminum melting chamber through the feeding port. The first motor is fixedly arranged at the top of the aluminum melting chamber, and the output end of the first motor is connected to the first stirring shaft. The first stirring shaft is arranged in a vertical direction and a paddle is arranged at the end of the first stirring shaft. The discharge port is arranged at the top of the heat preservation chamber, and the foamed aluminum material is transported outward through the discharge port. The second motor is fixedly arranged at the top of the heat preservation chamber, and the output end of the second motor is connected to the second stirring shaft, and the second stirring shaft is arranged in a vertical direction and a paddle is arranged at the end of the second stirring shaft. The third motor is fixedly arranged at the bottom of the heat preservation chamber, and the output end of the third motor is connected to the third stirring shaft, and the third stirring shaft is arranged in a vertical direction and a paddle is arranged at the end of the third stirring shaft. An air flow channel is arranged inside the third stirring shaft, and an air outlet hole connected to the air flow channel is arranged on the outer wall of the third stirring shaft; The stop plate is arranged at the top of the heat preservation chamber and extends downward in a direction toward the bottom of the heat preservation chamber, and the stop plate is located between the second stirring shaft and the third stirring shaft in the width direction of the heat preservation chamber; The first float liquid level sensor and the second float liquid level sensor are respectively arranged inside the aluminum melting chamber and the heat preservation chamber and are used to detect the liquid level height of the aluminum liquid in the aluminum melting chamber and the heat preservation chamber respectively; The controller is configured to: if the second liquid level height dimension of the second float liquid level sensor is smaller than the height dimension of the stop plate, drive the one-way valve to open and reduce the rotation speed of the second motor and the third motor, and increase the airflow pressure delivered to the airflow channel.

2. The foam aluminum continuous production equipment according to claim 1, characterized in that: The first thermocouple and the first heating rod are respectively arranged at the top and the bottom of the aluminum melting chamber.

3. The continuous production equipment of foamed aluminum according to claim 2, characterized in that: The second thermocouple and the second heating rod are respectively arranged at the top and the bottom of the heat preservation chamber.

4. The foam aluminum continuous production equipment according to claim 3, characterized in that: The paddles arranged on the third stirring shaft are located below the end of the stop plate.

5. The foam aluminum continuous production equipment according to claim 4, characterized in that: The controller is further configured to drive the one-way valve to a closed state if the height dimension of the second liquid level of the second float liquid level sensor is greater than or equal to the height dimension of the stop plate.

6. The foam aluminum continuous production equipment according to claim 5, characterized in that: The controller is also configured to drive an alarm signal if the height dimension of the first surface of the first float liquid level sensor is less than a liquid level threshold, and the liquid level threshold is equal to the vertical dimension of the one-way valve from the bottom of the aluminum melting chamber.

7. The continuous production equipment of foamed aluminum according to claim 6, characterized in that: The paddle disposed on the second stirring shaft is located below the end of the stop plate.

8. The foam aluminum continuous production equipment according to claim 7, characterized in that: Ceramic coatings are arranged on the inner wall of the aluminum melting chamber, the inner wall of the heat preservation chamber and the outer wall of the stop plate.

9. The foam aluminum continuous production equipment according to claim 8, characterized in that: The air outlet is circumferentially arranged on the outer wall of the third stirring shaft, and the air flow channel is extended along the axial direction of the third stirring shaft.

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