Multi-furnace coordinated magnesium alloy refining unit

Abstract

The utility model relates to the technical field of magnesium alloy refining unit of many furnaces cooperation, including two refining furnaces and casting furnace, two feeding machines, two liquid pipe and casting pipe, all kinds of pump and related sensor and controller, and the refining furnace and casting furnace are linked through liquid pipe, and the feeding machine supplies raw material to the refining furnace respectively, and all kinds of sensors gather temperature and liquid level information feedback to the controller respectively, and the PLC controller is the control center of this device, when working, the PLC controller is on-line with the control system of each melting furnace and feeding machine, and the production process is accurately planned, and the pump rotates continuously and transfers magnesium liquid into the casting furnace and mould to realize the continuous production of castings, compared with prior art, the utility model has the following effects: many furnaces cooperate smelting without remelting process, magnesium liquid keeps constant delivery mode and stable delivery temperature and composition, the space of many furnaces arrangement is controllable and has integration effect, and the operating cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of magnesium alloy smelting and die casting production technology, specifically to an integrated device for magnesium alloy smelting and casting that does not require remelting. Background Technology

[0002] The purpose of this device is to address the current limitations of magnesium alloy smelting technology in producing high-quality magnesium alloy melts. While traditional vacuum smelting technology can provide high-quality magnesium alloy melts, it suffers from low efficiency and high cost, making it difficult to achieve large-scale production and meet the needs of continuous production of large castings. Therefore, this device proposes to develop a highly efficient and energy-saving high-quality magnesium alloy smelting equipment that utilizes multiple furnaces in collaboration. This equipment eliminates the need for magnesium alloy remelting processes, providing equipment and process support for the large-scale continuous production of high-strength and tough magnesium alloy parts and large magnesium alloy components. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a multi-furnace collaborative magnesium alloy refining unit that centrally and rationally arranges multiple melting furnaces to avoid heat loss and save space. At the same time, it enables the large-scale continuous production of magnesium alloy parts from magnesium alloy refining without the need for magnesium alloy ingot casting and remelting processes, thus saving costs.

[0004] To achieve the above objectives, the technical solution of this device is as follows: a multi-furnace collaborative magnesium alloy refining unit, including two refining furnaces and a casting furnace, two feeders, inter-furnace transfer pipes (i.e., transfer pipe A and transfer pipe B), a casting pipe, various pumps, and related sensors and controllers. The refining furnace and the casting furnace are sealed and connected through the transfer pipes. The feeders supply raw materials to the refining furnaces respectively. Various sensors sealed and installed on this device collect temperature and liquid level information and feed it back to the PLC controller. The PLC controller is connected to the control systems of each furnace and the feeder to realize that the transfer and casting processes are carried out in a sealed liquid throughout. The PLC control center precisely plans the production process. Various pumps are sealed and installed on the furnaces. During operation, the various pumps rotate continuously to transfer the magnesium liquid into the casting furnace and mold to realize the continuous production of castings.

[0005] The three heating furnaces include refining furnace A (3), refining furnace B (4) and casting furnace (7), including feeder A (1) and feeder B (2), including transfer pipe A (5), transfer pipe B (6) and casting pipe (8), including two transfer pumps (10), casting pump (20), three stirring pumps (11), including three sets of upper limit liquid level probes (13), three sets of working limit liquid level probes (14), three sets of casting chamber thermocouples (15), three sets of feeding chamber thermocouples (16), three sets of lower limit liquid level probes (17), three sets of leakage detection sensors (19), feeding port and slag removal port (18), and sealing cover (21).

[0006] The refining furnace, casting furnace, and three heating furnaces are composed of a furnace shell, insulation layer, electric heating layer, furnace chamber, and crucible from the outside to the inside, and are sealed by a sealing cover (21). A leakage detection sensor (19) is installed at the lowest point of the furnace chamber of each of the three heating furnaces. The inner chamber of the crucible (22) of each of the three heating furnaces is divided into a front casting chamber, a middle feeding chamber / tail filtration chamber by upper, middle, and lower horizontal partitions. The crucible cover in the sealing cover (21) of the three heating furnaces has an automatically opening and closing sealable feeding port and a slag removal port (18) and a slag removal port, facilitating the rapid addition of alloy ingots and... Slag removal: The transfer pipes A and B (5, 6) and the casting pipe (8) are installed on the three heating furnace sealing covers, and the outer ends of each are provided with sealing flanges. The three heating furnace sealing covers (21) are also equipped with upper limit liquid level probes (13), working limit liquid level probes (14), and casting chamber thermocouples (15). Their signal acquisition points are located in the front casting chamber of the crucible. The three heating furnace sealing covers (21) are also equipped with lower limit liquid level probes (17) and feeding chamber thermocouples (16). Their signal acquisition points are located in the middle feeding chamber of the crucible. The installation ports of each sensor are kept sealed.

[0007] The transfer pump (10), casting pump (20), and stirring pump (11) are all installed on the furnace sealing cover (21) through the sealing pump flange. The pump shafts of the transfer pump (10) and casting pump (20) extend vertically into the casting chamber at the front of the crucible, and the pump shaft of the stirring pump (11) extends vertically into the feeding chamber in the middle of the crucible. The outlets of the transfer pump and casting pump are located at a depth of 260±10 (mm) below the sealing cover in the casting chamber, and the blades connected to the tail of the stirring pump shaft are located in the middle of the feeding chamber in the middle of the crucible.

[0008] The transfer tube and casting tube are provided with an inner tube and an outer tube. The space between the inner tube and the outer tube is filled with heat-insulating filler. The outer wall of the inner tube is wrapped with a heating resistor connected to the heating power supply and the temperature measuring thermocouple.

[0009] The transfer pump and the casting pump are driven by high-temperature motors.

[0010] The PLC controller is electrically connected to the liquid level probe and the thermocouple via signal lines. The PLC controller is also connected to the control systems of the feeder, furnace, and die-casting machine to jointly control this integrated device, accurately plan the magnesium alloy production process, and achieve mutual cooperation among the various devices.

[0011] Preferably, the opening of the transfer pipe in the refining furnace is higher than the opening in the casting furnace, and the opening of the transfer pipe in the refining furnace is perpendicularly pressed to the outlet of the pump barrel of the transfer pump. The casting furnace and the die-casting machine are connected through the casting pipe, and the opening of the casting pipe in the casting furnace is perpendicularly pressed to the outlet of the pump barrel of the casting pump.

[0012] The transfer tube and casting tube are provided with an inner tube and an outer tube. The space between the inner tube and the outer tube is filled with heat-insulating filler. The outer wall of the inner tube is wrapped with a heating resistor connected to the heating power supply and the temperature measuring thermocouple.

[0013] The transfer pump and the casting pump are driven by high-temperature motors.

[0014] The PLC controller is electrically connected to the liquid level probe and the thermocouple via signal lines. The PLC controller is also connected to the control systems of the feeder, furnace, and die-casting machine to jointly control this integrated device, accurately plan the magnesium alloy production process, and achieve mutual cooperation among the various devices.

[0015] The advantages of this utility model are: (1) The use of a transfer pipe and a casting pipe allows the transfer and casting process to be carried out in a sealed liquid throughout, eliminating hydrogen absorption and oxidation slag formation, and ensuring the consistency of the mechanical properties and composition of the alloy castings; (2) The remelting process of alloy ingots is not required, reducing energy consumption, greatly shortening the entire casting process, and reducing equipment, labor, energy and site investment; (3) The PLC controller receives the control liquid level information in real time and accurately controls the start and stop of the relevant pumps, thereby ensuring the accuracy of quantitative casting; (4) It meets the requirements of continuous production of existing castings, especially the continuous supply of molten liquid for the production of large castings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this device or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the planar layout of this utility model.

[0018] Figure 2 This is a schematic diagram showing the positional relationship between the feeding machine and the smelting furnace of this utility model.

[0019] Figure 3 This is a schematic diagram of the furnace structure and a schematic diagram of the positional relationship between the smelting furnace and the casting furnace of this utility model.

[0020] In the diagram: 1. Feeder A 2. Feeder B 3. Refining Furnace A 4. Refining Furnace B 5. Transfer Pipe A 6. Transfer Pipe B 7. Casting Furnace 8. Casting Pipe 10. Transfer Pump 11. Stirring Pump 12. Furnace Inner Baffle 13. Upper Limit Liquid Level Probe 14. Working Limit Liquid Level Probe 15. Casting Chamber Thermocouple 16. Feeding Chamber Thermocouple 17. Lower Liquid Level Thermocouple 18. Feeding Port and Slag Removal Port 19. Leakage Detection Sensor 20. Casting Pump 21. Sealing Cover 22. Crucible Liquid Level. Detailed Implementation

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

[0022] To more fully explain the implementation of this device, implementation examples are provided. These implementation examples are merely illustrative of the device and do not limit its scope. The present invention will be further explained in detail with reference to the accompanying drawings.

[0023] As attached Figure 1 As shown, the multi-furnace collaborative magnesium alloy refining unit includes two refining furnaces and a casting furnace, two feeders, inter-furnace transfer pipes (i.e., transfer pipe A and transfer pipe B), a casting pipe, various pumps, and related sensors and controllers. The refining furnace and the casting furnace are sealed and connected through the transfer pipes. The feeders supply raw materials to the refining furnaces respectively. Various sensors sealed on this device collect temperature and liquid level information and feed it back to the PLC controller. The PLC controller is connected to the control systems of each furnace and the feeder to realize that the transfer and casting process is carried out in a sealed liquid throughout. The PLC control center accurately plans the production process. Various pumps are sealed and installed on the furnaces. During operation, various pumps rotate continuously to transfer magnesium liquid into the casting furnace and mold to realize continuous production of castings. Feeders 1 and 2 are arranged outside the furnaces 3 and 4. The furnaces adopt a cuboid structure. The two furnaces (3, 4) are arranged in parallel and closely perpendicular to the casting furnace (7) to minimize the heat dissipation space.

[0024] As attached Figure 1-3As shown, the three heating furnaces include refining furnace A (3), refining furnace B (4) and casting furnace (7), including feeder A (1) and feeder B (2), including transfer pipe A (5), transfer pipe B (6) and casting pipe (8), including two transfer pumps (10), casting pump (20), three stirring pumps (11), including three sets of upper limit liquid level probes (13), three sets of working limit liquid level probes (14), three sets of casting chamber thermocouples (15), three sets of feeding chamber thermocouples (16), three sets of lower limit liquid level probes (17), three sets of leakage detection sensors (19), feeding port and slag removal port (18), and sealing cover (21).

[0025] As attached Figure 2-3 As shown, the refining furnace, casting furnace, and three heating furnaces are composed of a furnace shell, insulation layer, electric heating layer, furnace chamber, and crucible from the outside to the inside, and are sealed by a sealing cover (21). A leakage detection sensor (19) is installed at the lowest point of the furnace chamber of the three heating furnaces. The inner chamber of the crucible (22) of the three heating furnaces is divided into a front casting chamber, a middle feeding chamber, and a tail filtration chamber by upper, middle, and lower horizontal partitions. The crucible cover in the sealing cover (21) of the three heating furnaces has an automatically opening and closing sealable feeding port and a slag removal port (18) to facilitate the rapid addition of alloy ingots and slag removal into the crucible feeding chamber in the furnace. The liquid transfer pipe A (5, 6) The casting pipe (8) is installed on the sealing cover of the three heating furnaces, and the outer end of each of them is provided with a sealing flange. The three heating furnace sealing covers (21) are also equipped with an upper limit liquid level probe (13), a working limit liquid level probe (14), and a casting chamber thermocouple (15). The signal acquisition point is located in the front casting chamber of the crucible. The three heating furnace sealing covers (21) are also equipped with a lower limit liquid level probe (17) and a feeding chamber thermocouple (16). The signal acquisition point is located in the middle feeding chamber of the crucible. The installation port of each sensor is kept sealed. Preferably, each furnace sensor is arranged around the outside of the equipment for easy maintenance and wiring.

[0026] The transfer pump (10), casting pump (20), and stirring pump (11) are all installed on the furnace sealing cover (21) through the sealing pump flange. The pump shafts of the transfer pump (10) and casting pump (20) extend vertically into the casting chamber at the front of the crucible, and the pump shaft of the stirring pump (11) extends vertically into the feeding chamber in the middle of the crucible. The outlets of the transfer pump and casting pump are located at a depth of 260±10 (mm) below the sealing cover in the casting chamber, and the blades connected to the tail of the stirring pump shaft are located in the middle of the feeding chamber in the middle of the crucible.

[0027] Preferably, the opening of the transfer pipe in the refining furnace is higher than the opening in the casting furnace, and the opening of the transfer pipe in the refining furnace is perpendicularly pressed to the outlet of the pump barrel of the transfer pump. The casting furnace and the die-casting machine are connected through the casting pipe, and the opening of the casting pipe in the casting furnace is perpendicularly pressed to the outlet of the pump barrel of the casting pump.

[0028] The transfer tube and casting tube are provided with an inner tube and an outer tube. The space between the inner tube and the outer tube is filled with heat-insulating filler. The outer wall of the inner tube is wrapped with a heating resistor connected to the heating power supply and the temperature measuring thermocouple.

[0029] The transfer pump and the casting pump are driven by high-temperature motors.

[0030] The PLC controller is electrically connected to the liquid level probe and the thermocouple via signal lines. The PLC controller is also connected to the control systems of the feeder, furnace, and die-casting machine to jointly control this integrated device, accurately plan the magnesium alloy production process, and achieve mutual cooperation among the various devices.

[0031] The above description is only a preferred embodiment of the device and is not intended to limit the device. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the device shall be included within the protection scope of the device.

Claims

1. A multi-furnace collaborative magnesium alloy refining unit, characterized by: It includes three heating furnaces, namely refining furnace A and refining furnace B, and a casting furnace, two feeders, inter-furnace liquid transfer pipes, various pumps, and related sensors and controllers. The refining furnace and the casting furnace are sealed and connected through the liquid transfer pipes. The feeders supply raw materials to the refining furnaces. Various sensors sealed on this device collect temperature and liquid level information and feed it back to the PLC controller. The PLC controller is connected to the control systems of each furnace and the feeder to realize that the liquid transfer and casting process is carried out in a sealed liquid throughout. The PLC control center precisely plans the production process. Various pumps are sealed and installed on the furnaces.

2. The multi-furnace collaborative magnesium alloy refining unit according to claim 1, characterized in that: The three heating furnaces include refining furnace A (3), refining furnace B (4) and casting furnace (7), including feeder A (1) and feeder B (2), the inter-furnace transfer pipe includes transfer pipe A (5) and transfer pipe B (6) and casting pipe (8), the various pumps include two transfer pumps (10), casting pump (20) and three stirring pumps (11), the relevant sensors include three sets of upper limit liquid level probes (13), three sets of working limit liquid level probes (14), three sets of casting chamber thermocouples (15), three sets of feeding chamber thermocouples (16), three sets of lower limit liquid level probes (17) and three sets of leakage detection sensors (19), and the relevant sensors are sealed and installed on the sealing cover (21) of the three heating furnaces.

3. The multi-furnace collaborative magnesium alloy refining unit according to claim 2, characterized in that, The refining furnace A (3), refining furnace B (4), and casting furnace (7) are composed of a furnace shell, insulation layer, electric heating layer, furnace chamber, and crucible from the outside to the inside, and are sealed by a sealing cover (21). A leakage detection sensor (19) is installed at the lowest point of the furnace chamber of the three furnaces. The inner chamber of the crucible (22) of the three furnaces is divided into a front casting chamber, a middle feeding chamber, and a tail filtration chamber by upper, middle, and lower horizontal partitions. The crucible cover in the sealing cover (21) of the three furnaces has an automatically opening and closing sealable feeding port and a slag removal port (18) to facilitate the rapid addition of alloy ingots into the crucible feeding chamber inside the furnace. In addition to slag removal, the transfer pipe A (5), transfer pipe B (6), and casting pipe (8) are installed on three heating furnace sealing covers, and their outer ends are all equipped with sealing flanges. The three heating furnace sealing covers (21) are also equipped with upper limit liquid level probe (13), working limit liquid level probe (14), and casting chamber thermocouple (15), and their signal acquisition points are located in the front casting chamber of the crucible. The three heating furnace sealing covers (21) are also equipped with lower limit liquid level probe (17) and feeding chamber thermocouple (16), and their signal acquisition points are located in the middle feeding chamber of the crucible. The installation ports of each sensor are kept sealed.

4. The multi-furnace collaborative magnesium alloy refining unit according to claim 2, characterized in that, The transfer pump (10), casting pump (20), and stirring pump (11) are all installed on the furnace sealing cover (21) through the sealing pump flange. The pump shafts of the transfer pump (10) and casting pump (20) extend vertically into the casting chamber at the front of the crucible, and the pump shaft of the stirring pump (11) extends vertically into the feeding chamber in the middle of the crucible. The outlets of the transfer pump and casting pump are located at a depth of 260±10 (mm) below the sealing cover in the casting chamber, and the blades connected to the tail of the stirring pump shaft are located in the middle of the feeding chamber in the middle of the crucible.

5. The multi-furnace collaborative magnesium alloy refining unit according to claim 2, characterized in that, The transfer tube and casting tube are provided with an inner tube and an outer tube. The space between the inner tube and the outer tube is filled with heat-insulating filler. The outer wall of the inner tube is wrapped with a heating resistor connected to the heating power supply and the temperature measuring thermocouple.

6. The multi-furnace collaborative magnesium alloy refining unit according to claim 2, characterized in that: The transfer pump and the casting pump are driven by high-temperature motors.

7. The multi-furnace collaborative magnesium alloy refining unit according to claim 1, characterized in that: The PLC controller is electrically connected to the relevant sensors, such as level probes and thermocouples, via signal lines. The PLC controller is also connected to the control systems of the feeder, furnace, and die-casting machine to jointly control this integrated device, accurately plan the magnesium alloy production process, and achieve mutual cooperation among the various devices.

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