A tubular filtration device made of aluminum casting and rolling.

Abstract

This utility model discloses a tubular filtration device for aluminum casting and rolling, including a housing. The right side wall of the housing has an aluminum molten metal inlet and outlet, and the front bottom wall has a drain hole. A lid is fastened to the top of the housing. A filter tube is placed on the bottom wall of the housing, and the filter tube is configured to cooperate with the aluminum molten metal discharge channel on the front side of the housing. A temperature detection component is located in the middle of the lid and is configured to cooperate with the housing. It also includes an immersion heating component; the immersion heating component is located in the middle of the lid, and its lower end extends into the interior of the housing. A control cabinet is located on the rear side of the housing, and the input end of the control cabinet is electrically connected to an external power source. The immersion heating component is an integrated ceramic immersion heater. This tubular filtration device for aluminum casting and rolling solves the problem of uneven preheating and stratification of the aluminum molten metal during temperature preservation.

Description

Technical Field

[0001] This utility model relates to the field of aluminum melting, casting, and rolling technology, specifically to a tubular filtration device for aluminum casting and rolling. Background Technology

[0002] Aluminum rods and coils are important transitional products for aluminum products. Molten aluminum is melted, purified, degassed, de-gassed, and slag-removed until all elements meet set standards before casting. It is one of the basic raw materials for aluminum products. The quality of aluminum rods and coils determines the processing quality of aluminum products. Tubular filtration is the last process before casting aluminum rods and coils. The temperature drop and quality change of molten aluminum, as well as some impurities, can have a serious impact on the extrusion molding of subsequent products. Therefore, the temperature requirements and filtration treatment of molten aluminum before casting are extremely important, especially for aluminum rods and coils used in the manufacture of mobile phone shells, beverage cans, battery foils, and aircraft castings, which have high quality requirements. Traditional tubular filtration preheating methods use radiation from silicon carbide rods, which has poor heat preservation effect on the preheated molten aluminum and easily causes stratification of the molten aluminum temperature (high surface temperature and low temperature at the bottom), which has a certain impact on the quality of the filter tube and molten aluminum. To address this, we propose a tubular filtration device for aluminum casting and rolling. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a tubular filter device for aluminum casting and rolling. The device is uniformly preheated and the molten aluminum is uniformly heated by an immersion heating component, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tubular filtration device for aluminum casting and rolling, comprising a box body, an aluminum molten inlet and outlet on the right side wall of the box body, a drain hole on the front bottom wall of the box body, a box cover fastened to the upper end of the box body, a filter tube placed on the bottom wall of the box body, the filter tube being configured to cooperate with the aluminum molten discharge channel on the front side inside the box body, a temperature detection component being provided in the middle of the box cover, the temperature detection component being configured to cooperate with the box body, and also including an immersion heating component;

[0005] Immersion heating component: It is located in the middle of the box cover, and the lower end of the immersion heating component extends into the interior of the box, which solves the problem of uneven preheating of the equipment and the layering of aluminum molten temperature during heat preservation.

[0006] Furthermore, a control cabinet is provided on the rear side of the enclosure, and the input end of the control cabinet is electrically connected to an external power source for stable control.

[0007] Furthermore, the immersion heating component is a ceramic integrated immersion heater, which is evenly arranged in the middle of the box cover. The lower end of the ceramic integrated immersion heater extends into the interior of the box. The input end of the ceramic integrated immersion heater is electrically connected to the output end of the control cabinet for uniform heating.

[0008] Furthermore, the temperature detection component is an aluminum-water thermocouple, which is located in the middle of the box cover. The temperature probe of the aluminum-water thermocouple passes through the middle of the box cover and extends into the interior of the box. The aluminum-water thermocouple is bidirectionally electrically connected to the control cabinet to detect the temperature.

[0009] Furthermore, the molten aluminum inlet and outlet include an outlet and an inlet, which are respectively located on the right side wall of the box. The outlet is located in front of the inlet, and the outlet is connected to the molten aluminum discharge channel on the front side of the box, which facilitates the entry and discharge of molten aluminum.

[0010] Furthermore, the front and rear sides of the housing are provided with symmetrically distributed lifting lugs for hoisting the equipment.

[0011] Furthermore, a filter tube hoisting device is provided on the right side of the housing. The filter tube hoisting device is designed to work in conjunction with the filter tube to facilitate the installation of the filter tube.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This aluminum casting and rolling tubular filtration device has the following advantages:

[0013] This solution uses an immersion heating element to uniformly preheat the equipment and heat the molten aluminum, solving the problem of poor heat preservation of molten aluminum in traditional tubular filter equipment, which easily leads to stratification of the molten aluminum temperature. This increases the service life of the filter tube and improves the quality of the molten aluminum. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural schematic diagram of the front sectional view of the box body of this utility model;

[0016] Figure 3 This is a structural schematic diagram showing the rear cross-section of the housing of this utility model;

[0017] Figure 4 This is a structural schematic diagram of the left side cross-section of the box body of this utility model;

[0018] Figure 5 This is an enlarged structural schematic diagram of point A of this utility model;

[0019] Figure 6 This is a top view of the structure of this utility model.

[0020] In the diagram: 1. Box body, 2. Box cover, 3. Lifting lug, 4. Aluminum molten metal inlet and outlet, 41. Outlet, 42. Inlet, 5. Drain hole, 6. Integrated ceramic immersion heater, 7. Aluminum molten metal thermocouple, 8. Filter tube, 9. Filter tube hoisting device, 10. Control cabinet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-6This embodiment provides a technical solution: a tubular filter device for aluminum casting and rolling, including a housing 1. Symmetrically distributed lifting lugs 3 are provided on both the front and rear sides of the housing 1. A control cabinet 10 is located on the rear side of the housing 1, with its input terminal electrically connected to an external power source. An aluminum molten material inlet / outlet 4 is provided on the right side wall of the housing 1, and a drain hole 5 is provided on the bottom front wall of the housing 1. The aluminum molten material inlet / outlet 4 includes an outlet 41 and an inlet 42, which are respectively located on the right side wall of the housing 1. The outlet 41 is located in front of the inlet 42 and is connected to the aluminum molten material discharge channel on the front side inside the housing 1. A housing cover 2 is fastened to the upper end of the housing 1. A filter pipe 8 is placed on the bottom wall of the housing 1, and the filter pipe 8 is connected to the aluminum molten material discharge channel on the front side inside the housing 1. The discharge channel is designed in conjunction with the filter tube 8. A filter tube lifting device 9 is located on the right side of the housing 1, and is designed to work with the filter tube 8 (the filter tube lifting device 9 is a conventional metal lifting claw). A temperature detection component, an aluminum-water thermocouple 7, is located in the middle of the housing cover 2 and is designed to work with the housing 1. The temperature probe of the aluminum-water thermocouple 7 penetrates the middle of the housing cover 2 and extends into the interior of the housing 1. The aluminum-water thermocouple 7 is bidirectionally electrically connected to the control cabinet 10. When the filtration capacity is about to reach the filtration capacity of the filter tube 8, the aluminum output decreases significantly. At the end of production, the addition of aluminum should be stopped and the filter replaced. After production, all residual aluminum in the housing 1 is drained through the drain hole 5. (A plug is inserted inside the drain hole 5. Normally, the molten aluminum is blocked from flowing out of the drain hole 5 by the plug. However, the plug can be pulled out of the drain hole 5 by a pull rod at the rear end of the plug, allowing the molten aluminum to flow out.) Use the filter tube hoisting device 9 to hoist the used filter tube 8 outside the chamber 1. Wait for the temperature inside the chamber 1 to drop to about 50 degrees Celsius (observed by the feedback from the aluminum molten aluminum thermocouple 7). Clean the lining residue inside the chamber and ensure the cleanliness of the filter tube 8 mounting base. Use the filter tube hoisting device 9 to install the new filter tube 8 into the chamber 1. Close the chamber cover 2 and connect it to the chamber 1. After checking and confirming that everything is correct, the equipment can be used again. This process requires shutdown for cooling, installation, and heating, totaling 3 days. Two sets of independent pipes can also be prepared. The filter equipment consists of one production set and one backup set. When the filtration capacity is about to reach the filtration capacity of filter tube 8 and the output of molten aluminum decreases significantly, the addition of molten aluminum needs to be stopped at the end of production. All the residual molten aluminum in the tank 1 is drained through the drain hole 5. The entire set of equipment is lifted to a safe area by an overhead crane and hoisted by the lifting lugs 3 set in the tank 1. The used filter tube 8 is hoisted to the outside of the tank 1 by the filter tube hoisting device 9. The other set of equipment, which has already been installed with filter tube 8 and the temperature of the tank 1 has been preheated to meet the production process, is lifted to the production area by an overhead crane for docking. This process does not require machine downtime and takes a total of 2 hours. Customers can choose the filter tube 8 replacement scheme according to the production rhythm. There are two ways to replace the filter tube 8, and it also includes an immersion heating component.

[0023] Immersion heating element: It is located in the middle of the cover 2, and the lower end of the immersion heating element extends into the interior of the box 1. The immersion heating element is a ceramic integrated immersion heater 6 (the ceramic integrated immersion heater has a heating wire set inside the ceramic body, which is integrally sintered and formed. Current passes through the heating wire to generate heat, and then the ceramic body transfers the heat to the heated medium). The ceramic integrated immersion heater 6 is evenly distributed in the middle of the cover 2, and the lower end of the ceramic integrated immersion heater 6 extends into the interior of the box 1. The input end of the ceramic integrated immersion heater 6 is electrically connected to the output end of the control cabinet 10. Before the tubular filter equipment is put into use, the cover 2 is opened, the filter tube 8 is lifted and installed into the box 1 using the filter tube lifting device 9, the cover 2 and the box 1 are closed, and after checking and confirming that everything is correct, the heating wire inside the ceramic integrated immersion heater 6 is energized through the control cabinet 10. Current passes through the heating wire to generate heat, and then the ceramic body transfers the heat to the heated medium. The ceramic body of the integrated immersion heater 6 transfers heat to the heated medium until the chamber 1 is preheated to the required production temperature (the control cabinet 10 opens the aluminum water thermocouple 7, and the probe of the aluminum water thermocouple 7 monitors the temperature inside the chamber 1 in real time and feeds back to the control cabinet 10). Molten aluminum flows into the chamber 1 through inlet 42, enters the inner wall of the filter tube 8 through the pressure difference, and then flows into the interior of the chamber 1. The molten aluminum discharge passage on the front side of the chamber 1 is discharged through outlet 41 to start production. The temperature needs to meet the molten aluminum temperature requirement of 700℃-780℃ in the production process. Since the integrated ceramic immersion heater 6 is in direct contact with the molten aluminum, the temperature of the molten aluminum in the chamber 1 is uniform, which can meet the temperature requirements of the production process, extend the service life of the filter tube 8, and make its temperature reach the molten aluminum temperature of the production process. This avoids cracks caused by temperature difference that affect the quality of the molten aluminum, improves the service life of the equipment, and uniformly heats the molten aluminum at the same time as the preheating.

[0024] The working principle of the tubular filtration equipment for aluminum casting and rolling provided by this utility model is as follows: Before starting the tubular filtration equipment, open the box cover 2, use the filter tube hoisting device 9 to lift the filter tube 8 and install it into the box body 1, close the box cover 2 and the box body 1, and after checking and confirming that everything is correct, energize the heating wire inside the ceramic integrated immersion heater 6 through the control cabinet 10. The current generates heat through the heating wire, and then the ceramic body of the ceramic integrated immersion heater 6 transfers the heat to the heated medium until the box body 1 is preheated to the required production temperature (the control cabinet 10 opens the aluminum water thermocouple 7, and the probe of the aluminum water thermocouple 7 monitors the temperature inside the box body 1 in real time and feeds it back to the control cabinet 10). Molten aluminum flows into the box through inlet 42. Inside body 1, molten aluminum flows from the outer wall of filter tube 8 through the pressure difference, then flows into the inner wall of filter tube 8 and exits through outlet 41 at the front of the chamber 1 to begin production. The temperature needs to meet the production process requirement of 700℃-780℃ for molten aluminum. Because the ceramic integrated immersion heater 6 is in direct contact with the molten aluminum, the temperature of the molten aluminum inside chamber 1 is uniform, meeting the production process temperature requirements, extending the service life of filter tube 8, and ensuring its temperature reaches the production process temperature. This prevents cracks caused by temperature differences from affecting the quality of the molten aluminum and improves the equipment's lifespan. When the filtration capacity is about to reach the filtration capacity of filter tube 8, the output of molten aluminum decreases significantly. At the end of production, it is necessary to stop adding molten aluminum and replace it. After draining all residual molten aluminum from chamber 1 through drain hole 5 (a plug is inserted inside drain hole 5; normally, the molten aluminum is blocked from flowing out of drain hole 5, but a pull rod at the rear of the plug can be used to pull the plug out of drain hole 5, allowing the molten aluminum to flow out), use the filter tube hoisting device 9 to hoist the used filter tube 8 outside chamber 1. Wait for the temperature inside chamber 1 to drop to approximately 50 degrees Celsius (observed by the feedback from the aluminum molten aluminum thermocouple 7), clean the lining of the chamber to remove any residue, ensure the cleanliness of the filter tube 8 mounting base, and use the filter tube hoisting device 9 to install the new filter tube 8 into chamber 1. Close the chamber cover 2 and connect it to chamber 1. After checking and confirming that everything is correct, the equipment can be used again. This process requires stopping the machine and lowering it. The entire process, including temperature control, installation, and heating, takes 3 days. Two independent tubular filtration systems can be prepared, one for production and one for backup. When the filtration capacity is about to reach that of filter tube 8 and the aluminum output drops significantly, production should be stopped and aluminum addition should be stopped. All residual aluminum in the tank 1 should be drained through the drain hole 5. The entire system should be lifted to a safe area by an overhead crane and hoisted using the lifting lugs 3 on the tank 1. The used filter tubes 8 should be hoisted outside the tank 1 using the filter tube hoisting device 9. The other system, with filter tubes 8 already installed and the tank 1 preheated to meet production requirements, should be lifted to the production area by an overhead crane for connection. This process does not require machine downtime and takes a total of 2 hours. Customers can choose to replace the filter tubes 8 according to their production schedule.

[0025] It is worth noting that the heating wire inside the ceramic integrated immersion heater 6 disclosed in the above embodiments can be a conventional heating wire, and the aluminum water thermocouple 7 can be a K-type thermocouple. The control cabinet 10 controls the operation of the ceramic integrated immersion heater 6 and the aluminum water thermocouple 7 using methods commonly used in the prior art.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tubular filter device for aluminum casting and rolling, comprising a housing (1), wherein an aluminum molten inlet and outlet (4) are provided on the right side wall of the housing (1), a drain hole (5) is provided on the front bottom wall of the housing (1), a housing cover (2) is fastened to the upper end of the housing (1), a filter pipe (8) is placed on the bottom wall of the housing (1), the filter pipe (8) is configured to cooperate with the aluminum molten discharge channel on the front side inside the housing (1), and a temperature detection component is provided in the middle of the housing cover (2), the temperature detection component is configured to cooperate with the housing (1), characterized in that: It also includes immersion heating components; Immersion heating component: It is located in the middle of the cover (2), and the lower end of the immersion heating component extends into the interior of the box (1).

2. The aluminum casting and rolling tubular filtration device according to claim 1, characterized in that: The rear side of the enclosure (1) is provided with a control cabinet (10), and the input end of the control cabinet (10) is electrically connected to an external power source.

3. The aluminum casting and rolling tubular filtration device according to claim 2, characterized in that: The immersion heating component is a ceramic integrated immersion heater (6). The ceramic integrated immersion heater (6) is evenly arranged in the middle of the box cover (2). The lower end of the ceramic integrated immersion heater (6) extends into the interior of the box body (1). The input end of the ceramic integrated immersion heater (6) is electrically connected to the output end of the control cabinet (10).

4. The aluminum casting and rolling tubular filtration device according to claim 2, characterized in that: The temperature detection component is an aluminum-water thermocouple (7). The aluminum-water thermocouple (7) is located in the middle of the box cover (2). The temperature probe of the aluminum-water thermocouple (7) passes through the middle of the box cover (2) and extends into the interior of the box body (1). The aluminum-water thermocouple (7) is bidirectionally electrically connected to the control cabinet (10).

5. The aluminum casting and rolling tubular filtration device according to claim 1, characterized in that: The aluminum molten metal inlet and outlet (4) includes an outlet (41) and an inlet (42). The outlet (41) and the inlet (42) are respectively located on the right side wall of the box (1). The outlet (41) is located in front of the inlet (42). The outlet (41) is connected to the aluminum molten metal discharge channel inside the front of the box (1).

6. The aluminum casting and rolling tubular filtration device according to claim 1, characterized in that: The front and rear sides of the box (1) are provided with symmetrically distributed lifting lugs (3).

7. The aluminum casting and rolling tubular filtration device according to claim 1, characterized in that: The right side of the housing (1) is provided with a filter tube hoisting device (9), which is set in conjunction with the filter tube (8).

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