A magnesium alloy smelting crucible residue separation device

Abstract

The utility model discloses a magnesium alloy smelting crucible residue separation device relates to the technical field of residue metal casting. Including liquid pumping and slagging system, and the one side of liquid pumping and slagging system is connected with solid -liquid separation device, and the outlet of solid -liquid separation device is equipped with screw conveyor, and the movable chassis is equipped under solid -liquid separation device and screw conveyor, liquid pumping and slagging system is connected through liquid pumping pipe, and the one side of liquid pumping pipe is equipped with liquid pumping pump, and the water outlet of liquid pumping pipe is placed in the feed inlet of solid -liquid separation device. Through the setting of this technical scheme, the complicated process of hoisting high -temperature crucible in traditional craft is completely avoided, and the operator can directly complete the cleaning work of residual metal liquid and slag after pouring on the ground. The process realizes centralized control relying on the operation platform, greatly reduces the manual operation intensity and the security hidden danger, significantly improves the efficiency and standardization of cleaning operation, guarantees the production safety at the same time, realizes the time -saving and labor -saving, and the production effect of high -efficient economy.

Description

Technical Field

[0001] This utility model relates to the technical field of residual metal casting, specifically to a device for separating residues from magnesium alloy smelting crucibles. Background Technology

[0002] Magnesium alloys, as lightweight and high-strength metallic materials, have wide applications in aerospace, automotive manufacturing, biomedicine, and 3C products. With the continuous expansion of their applications, market demand for magnesium alloys is increasing year by year. In various magnesium alloy production processes, smelting is a crucial step, usually requiring the use of a crucible. The purity of the molten alloy directly affects the quality of the final product; therefore, thoroughly cleaning the crucible before smelting magnesium alloys of different grades and compositions is particularly important.

[0003] Despite the increasing maturity of magnesium alloy smelting technology, several factors still hinder its industrialization. For example, after smelting, the remaining magnesium slag and molten metal in the crucible need to be disposed of. Currently, the common method is to use a crane to lift the magnesium-smelting composite steel crucible containing the slag to an open area, where the crucible is tilted manually to pour the slag into a container. During this process, the high-temperature slag is prone to splashing and bubbling, increasing the workload for workers and posing significant safety hazards. Furthermore, this entirely manual operation requires a large work area and hoisting space. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a magnesium alloy smelting crucible residue separation device, which not only eliminates the need for hoisting equipment, but also separates solids and liquids, reduces the danger of manual operation, and improves the recycling rate of metal residues.

[0005] The above-mentioned objective of this utility model is achieved through the following technical solution:

[0006] A magnesium alloy smelting crucible residue separation device includes a liquid extraction and slag scraping system, a solid-liquid separation device connected to one side of the liquid extraction and slag scraping system, a spiral conveyor provided at the outlet of the solid-liquid separation device, and a movable chassis provided below the solid-liquid separation device and the spiral conveyor.

[0007] The liquid extraction and slag scraping system is connected via a liquid extraction pipe, and a liquid extraction pump is provided on one side of the liquid extraction pipe. The outlet of the liquid extraction pipe is located at the inlet of the solid-liquid separation device.

[0008] In a preferred embodiment, the present invention can be further configured as follows: the liquid extraction and slag scraping system includes a smelting crucible, an outer shell tube is sleeved on the outside of the liquid extraction pipe, a rotary controller is provided on the side of the liquid extraction pipe near the smelting crucible, the rotary controller includes an outer shell, the inner part of the outer shell is hollow, a motor is provided on the upper side of the outer shell, a drive gear is connected to the output end of the motor, a driven gear is meshed on one side of the drive gear, a rotating circular tube is fixedly connected to the lower ends of the drive gear and the driven gear, the rotating circular tube passes through the lower end of the outer shell and is placed inside the smelting crucible;

[0009] A connecting ring is fitted onto the outer casing tube, and a scraper is connected to one end of the connecting ring via a connecting rod.

[0010] In a preferred embodiment, the present invention can be further configured such that the connecting rod consists of two segments, which are connected by a spring-loaded buffer rod.

[0011] In a preferred embodiment, the present invention can be further configured such that: a hydraulic cylinder is also provided on the movable chassis, the output end of the hydraulic cylinder is located below the liquid extraction pipe, and when the hydraulic cylinder is raised or lowered, the overall height of the liquid extraction pipe will be raised or lowered synchronously.

[0012] In a preferred embodiment, the present invention can be further configured as follows: the solid-liquid separation system includes a storage tank, a coarse filter screen and a fine filter screen. The storage tank has an inlet on the side near the hydraulic cylinder. The inlet screen is sealed to the outlet of the pump. The coarse filter screen and the fine filter screen are placed at an angle inside the storage tank. Both the coarse filter screen and the fine filter screen are provided with scraper plates. A pneumatic push rod is provided on one side of the scraper plate.

[0013] In a preferred embodiment, the present invention can be further configured as follows: a slag collection bucket and an Ar gas cylinder are provided on one side of the liquid storage tank. The slag collection bucket is a sealed bucket and is located at the discharge port of the screw conveyor. Air inlets are provided on the top covers of both the liquid storage tank and the slag collection bucket. The Ar gas cylinder is connected to the air inlets of the liquid storage tank and the slag collection bucket through a gas delivery pipe.

[0014] In a preferred embodiment, the present invention may be further configured to include an operating platform for controlling the aforementioned components.

[0015] In summary, this utility model has at least one of the following beneficial technical effects:

[0016] 1. This technical solution completely eliminates the cumbersome process of hoisting high-temperature crucibles in traditional processes, allowing operators to directly clean up residual molten metal and slag after pouring on the ground. The process is centrally controlled via an operating platform, significantly reducing manual labor intensity and safety hazards, and substantially improving the efficiency and standardization of cleaning operations. While ensuring production safety, it achieves time-saving, labor-saving, and highly efficient production results.

[0017] 2. By applying a solid-liquid separation device, the automatic separation and classified storage of magnesium alloy liquid and solid residues can be achieved efficiently. This automated system replaces traditional manual operations, significantly reducing the safety risks associated with human contact with high-temperature molten metal, while simultaneously improving the recovery and reuse rate of metal residues, further optimizing the production process and reducing resource waste. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this technical solution;

[0019] Figure 2 This is a top view of the technical solution;

[0020] Figure 3 This is a sectional view of the technical solution;

[0021] Figure 4 This is a partial structural schematic diagram of the technical solution;

[0022] Figure 5 This is a schematic diagram of the solid-liquid separation device of this technical solution;

[0023] Figure 6 This is a schematic diagram of the rotation controller of this technical solution;

[0024] Figure 7 This is a schematic diagram of the spring buffer rod in this technical solution.

[0025] Reference numerals: 1. Liquid extraction and slag scraping system; 2. Solid-liquid separation device; 3. Melting crucible; 4. Hydraulic cylinder; 5. Feed inlet; 6. Liquid extraction pump; 7. Ar gas cylinder; 8. Liquid extraction pipe; 9. Connecting ring; 10. Connecting rod; 11. Spring buffer rod; 12. Scraper; 13. Rotating circular tube; 14. Rotation controller; 15. Liquid storage tank; 16. Coarse filter screen; 17. Fine filter screen; 18. Screw conveyor; 19. Operating platform; 20. Outer shell tube; 21. Movable chassis; 22. Slag collection bucket; 23. Gas supply pipe; 24. Slag inlet; 25. Slag outlet; 26. Air inlet; 27. Slag scraper; 28. Pneumatic push rod; 29. ​​Fixed support rod; 30. Gas cylinder; 141. Motor; 142. Drive gear; 143. Driven gear; 144. Outer shell. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 1-7 As shown, this is a residue separation device for a magnesium alloy smelting crucible 3 disclosed in this technical solution, including a liquid extraction and slag scraping system 1, a solid-liquid separation device 2 connected to one side of the liquid extraction and slag scraping system 1, a spiral conveyor 18 provided at the outlet of the solid-liquid separation device 2, and a movable chassis 21 provided below the solid-liquid separation device 2 and the spiral conveyor 18.

[0028] The liquid extraction and slag scraping system 1 is connected through the liquid extraction pipe 8. A liquid extraction pump 6 is provided on one side of the liquid extraction pipe 8, and the outlet of the liquid extraction pipe 8 is placed at the inlet 5 of the solid-liquid separation device 2.

[0029] Furthermore, the movable chassis 21 is also equipped with a hydraulic cylinder 4. The output end of the hydraulic cylinder 4 is located below the liquid extraction pipe 8. When the hydraulic cylinder 4 is raised or lowered, the overall height of the liquid extraction pipe 8 will be raised or lowered synchronously.

[0030] The suction pipe 8 is made of high-temperature resistant stainless steel. The suction pump 6 is also selected for its high-temperature resistance. It is composed of two stainless steel high-temperature resistant pipes sealed and welded together in an L-shape. The suction pipe 8 is sealed to the inlet of the suction pump 6 where it passes through the hydraulic cylinder 4. Figure 2 As shown, a column is installed here, with space on the column for the liquid pump 6 to move up and down. The liquid pump 6 is also fixedly installed on the column, and the liquid extraction pipe 8 passes through the column. The electric hydraulic cylinder 4 can control the height of the liquid extraction pipe 8 via the operating platform 19. When it reaches the set position, the liquid pump 6 is connected to the feed port 5 with bolts, and then sealed and fixed.

[0031] Furthermore, the liquid extraction and slag scraping system 1 includes a smelting crucible 3, an outer shell tube 20 is sleeved on the outside of the liquid extraction pipe 8, and a rotary controller 14 is provided on the side of the liquid extraction pipe 8 near the smelting crucible 3. The rotary controller 14 includes an outer shell, the inner core of which is hollow. A motor 141 is provided on the upper side of the outer shell 144. The output end of the motor 141 is connected to a drive gear 142. A driven gear 143 meshes on one side of the drive gear 142. A rotating round tube 13 is fixedly connected to the lower end of the drive gear 142 and the driven gear 143. The rotating round tube 13 passes through the lower end of the outer shell and is placed inside the smelting crucible 3.

[0032] A connecting ring 9 is fitted onto the outer casing tube 20, and one end of the connecting ring 9 is connected to a scraper 12 via a connecting rod 10.

[0033] The outer casing tube 20 is bolted to the column on one side and bolted to the rotary controller 14 on the other side. Both the outer casing tube 20 and the rotating tube 13 are made of high-temperature resistant stainless steel. The outer casing tube 20 is bolted to the top of the rotary controller 14, while the rotating tube 13 is connected to the bottom of the rotary controller 14. The rotary controller 14 controls the rotating tube 13 to rotate at different speeds. The rotary controller 14 has a through hole in the center through which the suction tube 8 can pass. The rotary controller 14 works by meshing two gears. The driven gear 143 has a hole in the center through which the suction tube 8 can pass. The motor 141 drives the driving gear 142, which in turn drives the driven gear 143 to rotate, thus rotating the rotating tube 13.

[0034] Furthermore, the connecting rod 10 is divided into two sections, and the two sections are connected by a spring buffer rod 11.

[0035] The spring-loaded buffer rod 11 can move horizontally to accommodate changes in the diameter of the melting crucible 3. The scraper 12 is made of stainless steel. The connecting rod 10 and the connecting ring 9 are fixedly connected. One end of the connecting ring 9 is fixedly connected to the connecting rod 10, and the other end is fixed to the corresponding position of the rotating tube 13 by bolts, so that the scraper 12 can scrape off the deposits on the inner wall of the melting crucible 3 as the rotating tube 13 rotates.

[0036] Furthermore, the solid-liquid separation device 2 includes a storage tank 15, a coarse filter screen 16, and a fine filter screen 17. The storage tank 15 has an inlet on the side near the hydraulic cylinder 4, and the inlet is sealed to the outlet of the pump 6. The coarse filter screen 16 and the fine filter screen 17 are placed at an angle inside the storage tank 15. Both the coarse filter screen 16 and the fine filter screen 17 are equipped with scraper plates 27, and a pneumatic push rod 28 is provided on one side of the scraper plate 27.

[0037] Furthermore, a slag collection bucket 22 and an Ar gas cylinder 7 are provided on one side of the liquid storage tank 15. The slag collection bucket 22 is a sealed bucket and is located at the discharge port of the screw conveyor 18. Both the liquid storage tank 15 and the slag collection bucket 22 have air inlets 26 on their top covers. The Ar gas cylinder 7 is connected to the air inlets 26 of the liquid storage tank 15 and the slag collection bucket 22 through a gas delivery pipe 23.

[0038] The storage tank 15 has a feed inlet on its top side near the column, which can be bolted to the outlet of the pump 6. Both the storage tank 15 and the slag collection bucket 22 have air inlets 26 on their top covers. Ar gas is introduced by sealing the outlet of the gas supply pipe 23 to the air inlet 26. The storage tank 15 has a built-in removable coarse filter 16 and a fine filter 17. Both the coarse and fine filters 16 are placed at an angle to filter and separate solid residues from the magnesium alloy solid-liquid mixture. The storage tank 15 is also equipped with a scraper 27 to prevent solid particles from adhering to the filter screens and being unable to enter the slag inlet 24, thus affecting the separation process. The scraper 27 is placed on top of the coarse filter 16 and perpendicular to its plane. Its movement is controlled by bolting to two pneumatic push rods 28, pushing the solid residues into the slag inlet. In section 24, the pneumatic push rod 28 is placed on the column and bolted in place. The pneumatic push rod 28 is oriented via a fixed support rod 29. The pneumatic push rod 28 is connected to the air tank 30 placed on the movable chassis 21 for air supply. The amount of air supply is controlled by the operating platform 19, which in turn controls the movement of the scraper plate 27 connected to the pneumatic push rod 28 to scrape slag. The slag inlet 24 is a rectangular opening located at the bottom of the inclined double-layer filter screen. The filtered solid residue particles enter the spiral conveyor 18 through the slag inlet 24. The spiral conveyor 18 is welded and sealed and fixed to the slag inlet 24 reserved on the liquid storage tank 15, conveying the separated solid residue particles to the slag outlet 25. The slag outlet 25 is bolted to the inlet of the slag collection bucket 22 to seal and store the filtered metallic solid residue.

[0039] Ar gas cylinder 7 is sealed to the air inlet 26 at the top of the liquid storage tank 15 and the slag collection bucket 22 via gas delivery pipe 23, controlling the oxygen content in the liquid storage tank 15 and the slag collection bucket 22 to be below 2%, preventing the oxidation and combustion of magnesium metal liquid in the liquid storage tank 15, and preventing the combustion of solid residue in the slag collection bucket 22, and other safety issues.

[0040] Furthermore, an operating platform 19 is provided, which is used to control the aforementioned components.

[0041] The implementation principle of this embodiment is as follows:

[0042] 1. Push the movable chassis 21 to the edge of the pit, fix the device in the working position, and ensure that it will not move during operation. Check whether the bolt connections between each component meet the requirements. After confirming that there are no problems, control the hydraulic cylinder 4 through the electric control platform 19 to move the electric hydraulic lifting column to the appropriate position.

[0043] 2. By turning on the rotary controller 14 switch through the electronic control platform 19, the scraper 12 can start to perform circular motion to scrape off the adhering substances on the inner surface of the smelting crucible 3. Then, the column is controlled to move downward to clean the smelting crucible 3. During the rotation cleaning process, as the diameter of the smelting crucible 3 varies at different heights, the inner wall of the smelting crucible 3 reacts to the spring buffer rod 11 connected to the scraper 12. The spring in the spring buffer rod 11 deforms under the force, changing the working radius of the scraper 12, so that the scraper 12 can always keep in contact with the inner wall of the smelting crucible 3 to perform circular motion to clean the adhering substances on the inner wall of the smelting crucible 3, until the bottom of the smelting crucible 3 is cleaned.

[0044] 3. When the lifting part of the electric hydraulic lifting column is lowered to the lowest position, the scraper 12 cleans the inner wall of the melting crucible 3. The rotary controller 14 is turned off through the electric control platform 19. At the same time, the inlet of the liquid extraction pipe 8 is lowered to the bottom of the melting crucible 3. The outlet of the liquid extraction pump 6 is bolted to the feed inlet on the liquid storage tank 15. The valve of the Ar gas cylinder 7 is opened to introduce Ar gas into the liquid storage tank 15 and the slag collection bucket 22. The oxygen content in the liquid storage tank 15 and the slag collection bucket 22 is controlled to be less than 2% to prevent oxidation and combustion. Then, the gas tank 30 and the pneumatic push rod 28 are sealed together via the gas supply pipe 23. First, the switch of the screw conveyor 18 is turned on, and then the switch of the liquid pump 6 is turned on to start drawing the mixed solution of residual liquid and residue in the melting crucible 3. The magnesium alloy solid-liquid mixture in the liquid pump pipe 8 enters the inlet of the storage tank 15 through the outlet of the liquid pump 6. The solid-liquid mixture entering from the inlet passes through the internal double-layer filter screen for separation and filtration. The separated and filtered liquid magnesium alloy liquid enters the storage tank 15 below the filter screen. The solid residue moves towards the filter screen due to gravity. The slag inlet 24 below the filter screen moves, and then enters the screw conveyor 18 through the slag inlet 24. In order to prevent solid residue particles from sticking to the filter screen and being unable to pass through the slag inlet 24 into the screw conveyor 18, the valve of the air tank 30 is opened during the pumping operation to make the pneumatic push rod 28 work. The scraper 27 connected to the pneumatic push rod 28 pushes the solid residue toward the slag inlet 24 and into the screw conveyor 18. After the screw conveyor 18 rotates, it will transport the solid residue to the slag outlet 25, and then the residue will enter the slag collection bucket 22 for collection, thereby completing the extraction and separation of residue and residual liquid.

[0045] 4. After the cleaning work is completed, turn off the switch of the liquid pump 6, control the column to move upward out of the melting crucible 3, move the device to the designated safe area, store and clean the magnesium liquid in the storage tank 15 and the solid residue in the slag collection bucket 22 separately according to the regulations, and place the device in the designated position after cleaning.

[0046] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A device for separating residues from a magnesium alloy smelting crucible, characterized in that, It includes a liquid extraction and slag scraping system (1), a solid-liquid separation device (2) is connected to one side of the liquid extraction and slag scraping system (1), a spiral conveyor (18) is provided at the outlet of the solid-liquid separation device (2), and a movable chassis (21) is provided below the solid-liquid separation device (2) and the spiral conveyor (18). The liquid extraction and slag scraping system (1) is connected through a liquid extraction pipe (8). A liquid extraction pump (6) is provided on one side of the liquid extraction pipe (8). The outlet of the liquid extraction pipe (8) is located at the inlet (5) of the solid-liquid separation device (2).

2. The magnesium alloy smelting crucible residue separation device according to claim 1, characterized in that, The liquid extraction and slag scraping system (1) includes a smelting crucible (3), and an outer shell tube (20) is sleeved on the outside of the liquid extraction pipe (8). A rotary controller (14) is provided on the side of the liquid extraction pipe (8) near the smelting crucible (3). The rotary controller (14) includes an outer shell (144), which is hollow inside. A motor (141) is provided on the upper side of the outer shell (144). The output end of the motor (141) is connected to a drive gear (142). A driven gear (143) meshes on one side of the drive gear (142). A rotating round tube (13) is fixedly connected to the lower ends of the drive gear (142) and the driven gear (143). The rotating round tube (13) passes through the lower end of the outer shell (144) and is placed inside the smelting crucible (3). A connecting ring (9) is fitted on the outer shell tube (20), and a scraper (12) is connected to one end of the connecting ring (9) via a connecting rod (10).

3. The magnesium alloy smelting crucible residue separation device according to claim 2, characterized in that, The connecting rod (10) consists of two sections, which are connected by a spring buffer rod (11).

4. The magnesium alloy smelting crucible residue separation device according to claim 2, characterized in that, The movable chassis (21) is also equipped with a hydraulic cylinder (4). The output end of the hydraulic cylinder (4) is located below the liquid extraction pipe (8). When the hydraulic cylinder (4) is raised or lowered, the overall height of the liquid extraction pipe (8) will be raised or lowered synchronously.

5. The magnesium alloy smelting crucible residue separation device according to claim 4, characterized in that, The solid-liquid separation device (2) includes a storage tank (15), a coarse filter screen (16) and a fine filter screen (17). The storage tank (15) has an inlet on the side near the hydraulic cylinder (4). The inlet is sealed to the outlet of the pump (6). The coarse filter screen (16) and the fine filter screen (17) are placed at an angle inside the storage tank (15). Both the coarse filter screen (16) and the fine filter screen (17) are provided with scraper plates (27). A pneumatic push rod (28) is provided on one side of the scraper plate (27).

6. The magnesium alloy smelting crucible residue separation device according to claim 5, characterized in that, The storage tank (15) is provided with a slag collection bucket (22) and an Ar gas cylinder (7) on one side. The slag collection bucket (22) is a sealed bucket and is located at the discharge port of the screw conveyor (18). The top cover of the storage tank (15) and the slag collection bucket (22) are provided with air inlets (26). The Ar gas cylinder (7) is connected to the air inlets (26) of the storage tank (15) and the slag collection bucket (22) through a gas delivery pipe (23).

7. The magnesium alloy smelting crucible residue separation device according to claim 6, characterized in that, An operating platform (19) is provided, which is used to control the above-mentioned components.

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