Vacuum aluminum suction transfer system for positioning and sealing molten aluminum ladle

Abstract

The invention provides a vacuum aluminum suction transfer system for positioning and sealing a molten aluminum ladle, which belongs to the field of molten aluminum transfer equipment and is characterized in that the molten aluminum ladle is placed on a base, a fixed base is matched with a movable base to position the molten aluminum ladle, and a guide lifting frame slides along a guide rail on the outer side of a vertical column on the fixed base; the supporting frame and the sealing cover are driven to ascend and descend, the sealing cover and the molten aluminum ladle are in flexible butt joint through compression of the spring rod to form a sealed environment, compressed air in the air storage tank drives the injection pump to vacuumize the molten aluminum ladle to generate negative pressure, and molten aluminum in a side well of the heat preservation furnace penetrates through the sealing cover through the inclined aluminum suction pipe to enter the molten aluminum ladle. The transferring problem of molten aluminum in the heat preservation furnace is solved, the influence of positioning errors of the molten aluminum ladle is reduced, the sealing efficiency of the sealing cover and the molten aluminum ladle is improved, aluminum slag in the aluminum suction pipe is reduced, and the purity of the molten aluminum during transferring is improved.

Description

Technical Field

[0001] The invention relates to the field of aluminum liquid transfer equipment, and more specifically to a vacuum aluminum suction transfer system for realizing the positioning and sealing of an aluminum liquid bag. Background Art

[0002] The aluminum molten ladle is the most common aluminum molten transfer equipment, which is suitable for medium and short distance aluminum molten transportation. The transfer method of aluminum molten from the holding furnace to the aluminum molten ladle is usually to open the plug of the holding furnace, and the aluminum molten is discharged from the furnace under the action of gravity and flows into the low-position aluminum molten ladle through the flow channel. The aluminum molten is in contact with the air over a large area to generate impurities, which reduces the quality of the aluminum molten.

[0003] Vacuum aluminum suction and transfer equipment is a new type of equipment that uses vacuum technology to suck liquid aluminum from a furnace or other container and transfer it to another container for transferring aluminum liquid, which reduces the oxidation and pollution of aluminum liquid and improves the purity of aluminum liquid. The existing vacuum aluminum suction and transfer equipment uses a forklift to place the aluminum liquid bag directly on the equipment base, and the sealing cover and the aluminum liquid bag mouth are rigidly connected to form a seal through a flange, and the aluminum suction tube is arranged horizontally. For example, the invention patent with patent number CN201310101574.3 discloses a vacuum aluminum suction and transfer system for casting.

[0004] The existing vacuum aluminum suction and transfer equipment has problems such as large positioning error of the aluminum liquid bag, difficult sealing and a lot of aluminum slag in the aluminum suction tube: the forklift driver is affected by the line of sight and distance, and it is difficult to accurately make the sealing cover and the center of the aluminum liquid bag mouth coincide when placing the aluminum liquid bag; it is time-consuming and laborious to connect the sealing cover and the aluminum liquid bag mouth through the flange each time, and it is difficult to adjust the sealing; the residual aluminum liquid in the horizontal aluminum suction tube forms a large amount of aluminum slag after cooling. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of large positioning error of aluminum liquid bag, difficult sealing and much aluminum slag in aluminum suction tube in the existing vacuum aluminum suction and transfer equipment, and disclose a vacuum aluminum suction and transfer system for realizing positioning and sealing of aluminum liquid bag, comprising a movable base and fixedly installed columns on a fixed base, a heat dissipation mask installed in the middle of two columns, guide rails installed on the outer sides of the two columns, a wire protection tube connecting the heat dissipation mask and a support frame, a guide lifting frame obtains power through a transmission system and slides along the guide rails, the support frame is fixedly connected to the guide lifting frame and the aluminum suction tube respectively, a sealing cover is hung on the support frame through a spring rod, a jet pump is connected and fixed to the sealing cover through an exhaust pipe, a gas storage tank is connected to the jet pump through an air inlet pipe, and a pressure gauge detects the air pressure of the gas storage tank.

[0006] In the improved scheme, the movable base includes a movable base forklift hole, a movable base anti-collision plate and a sight aiming hole; the movable base is located above the fixed base, and the movable base is semi-surrounded by the fixed base anti-collision plate to limit the movement range of the movable base for positioning; the diameter of the aluminum liquid bag is the same as the diameter of the movable base, the aluminum liquid bag is placed on the movable base by a forklift, the movable base anti-collision plate limits the front and rear position of the aluminum liquid bag, and the sight aiming hole limits the left and right position of the aluminum liquid bag.

[0007] In the improved scheme, the aluminum absorption tube includes a steel pipe, a lower elbow, an upper elbow, a flange, an aluminum absorption tube mounting plate, bolts, a metal hose and an aluminum absorption tube support plate. The aluminum absorption tube passes through a sealing cover to connect it with the side well of the aluminum liquid insulation furnace; the upper and lower flanges pass through the middle aluminum absorption tube mounting plate, the aluminum absorption tube mounting plate is fixed to the support frame by bolts, and the aluminum absorption tube support plate is welded to the guide lifting frame; when the aluminum absorption is completed, the aluminum liquid in the inclined aluminum absorption tube flows back to the side well of the insulation furnace under the action of gravity, thereby reducing the aluminum slag formed by the cooling of the residual aluminum liquid in the aluminum absorption tube.

[0008] In the improved solution, the transmission system includes an electric motor, a sprocket, a chain and a chain protection case; the motor drives the sprockets on the outside of the two columns to rotate synchronously through the steering gear and the shaft, and the chain drive drives the guide lifting frame to slide up and down along the guide rail, and the support frame rises and falls with the guide lifting frame.

[0009] In the improved scheme, the sealing cover includes a spring rod, a sealing cover vacuum gauge, a graphite packing and a liquid level electrode. The sealing cover is concentric with the fixed base anti-collision plate below. As the guide lifting frame descends, the graphite packing and fiber cotton clamped on the sealing cover fill the gap between the sealing cover and the aluminum liquid bag cover. The sealing cover and the aluminum liquid bag are flexibly connected through the compression of the spring rod to form a sealed environment. The sealing cover vacuum gauge detects the vacuum degree in the aluminum liquid bag. When the liquid level electrode detects the aluminum liquid level, it sends an electrical signal to turn off the control switch of the gas storage tank and stop vacuuming.

[0010] In the improved solution, the jet pump includes an exhaust pipe and a jet pump vacuum gauge; the jet pump vacuum gauge is used to detect the vacuum degree generated by the jet pump.

[0011] The technical effects achieved by the present invention are as follows:

[0012] 1. Provide a reference for the forklift driver. Place the aluminum liquid bag according to the sight hole and the front edge of the movable base. The forklift driver determines whether to place the aluminum liquid bag based on whether the movable base is stationary.

[0013] 2. The fixed base anti-collision plate limits the movement range of the movable base and controls the positioning error range.

[0014] 3. The metal hose deforms with the deformation of the spring rod, realizing the flexible docking of the sealing cover and the aluminum liquid bag. Compared with the rigid connection of the flange, the sealing efficiency is improved.

[0015] 4. The width of the joint surface between the sealing cover and the aluminum liquid ladle is greater than the maximum positioning error, and the influence of the positioning error on the sealing is reduced.

[0016] 5. Compared with the horizontal aluminum suction tube, the inclined aluminum suction tube has less aluminum slag inside, improved aluminum liquid quality, and extended service life of the aluminum suction tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0018] Figure 1 It is an axonometric diagram of the vacuum suction and transfer system of aluminum liquid in the holding furnace of the present invention;

[0019] Figure 2 A top view of the aluminum liquid ladle positioning according to the present invention;

[0020] Figure 3 An axonometric diagram of the aluminum liquid ladle positioning according to the present invention;

[0021] Figure 4 It is a front view of the aluminum suction tube in the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the fixed connection between the aluminum suction tube and the support frame and the transmission system in the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the aluminum liquid bag sealing implemented in the present invention;

[0024] Figure 7 It is an axonometric view of the aluminum liquid ladle in the present invention.

[0025] Description of reference numerals:

[0026] 1. Fixed base; 101. Fixed base anti-kick plate; 102. Wire hole; 103. Fixed base forklift hole; 104. Fixed base anti-collision plate; 2. Movable base; 201. Movable base forklift hole; 202. Movable base anti-collision plate; 203. Sight sight hole; 3. Column; 4. Heat dissipation mask; 5. Guide rail; 6. Wire protection tube; 7. Guide lifting frame; 8. Support frame; 9. Jet pump; 901. Exhaust pipe; 902. Jet pump vacuum gauge; 10. Suction aluminum tube; 1001. Steel pipe; 1002. Lower elbow; 1003. Upper elbow; 1004. Flange ;1005, aluminum suction tube mounting plate;1006, bolts;1007, metal hose;1008, aluminum suction tube support plate;11, air inlet pipe;12, sealing cover;1201, spring rod;1202, sealing cover vacuum gauge;1203, graphite packing;1204, liquid level electrode;13, barometer;14, gas tank;15, transmission system;1501, motor;1502, sprocket;1503, chain;1504, chain protection shell;16, fiber cotton;17, aluminum liquid bag;1701, transition flange;1702 insulation cover;1703 mouth sealing cover. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention is now described in detail with reference to the accompanying drawings.

[0028] The present invention and its implementation methods are described below, which are not restrictive and the actual implementation methods are not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

[0029] like Figure 1As shown, as a specific embodiment of the present invention, a vacuum aluminum suction transfer system for realizing positioning and sealing of aluminum liquid bag is disclosed, which can be used in the field of aluminum liquid transfer equipment, including a fixed base 1, a movable base 2, a column 3, a heat dissipation mask 4, a guide rail 5, a wire protection tube 6, a guide lifting frame 7, a support frame 8, a jet pump 9, an aluminum suction tube 10, an air inlet pipe 11, a sealing cover 12, a barometer 13 and a gas storage tank 14; the movable base 2 is placed on the fixed base 1, the column 3 is fixedly installed on the fixed base by bolts, and the heat dissipation mask 4 is installed between the two columns 3 for electric The machine 1501 dissipates heat, the guide rail 5 is fixed to the outside of the two columns 3 by bolts, the wire protection tube 6 connects the heat dissipation mask 4 and the support frame 8 for connecting the liquid level electrode 1204 and the control cabinet, the guide lifting frame 7 is sleeved on the guide rail 5, and obtains power through the transmission system 15 to slide along the guide rail 5, the support frame 8 is fixed to the guide lifting frame 7 by bolts, and a thin steel plate is screwed on the outside, the jet pump 9 is connected to the gas tank 14 through the air inlet pipe 11, the pressure gauge 13 detects the air pressure of the gas tank 14, the lower end of the suction aluminum tube 10 is connected to the side well of the insulation furnace, and the upper end is connected to and passes through the sealing cover 12.

[0030] like Figure 2 and 3 As shown, it is a top view and an axonometric view of the aluminum liquid ladle positioning implemented in the present invention, including a fixed base 1 and a movable base 2; the fixed base 1 includes a fixed base anti-kick plate 101, a wire hole 102, a fixed base forklift hole 103 and a fixed base anti-collision plate 104, and the movable base 2 includes a movable base forklift hole 201, a movable base anti-collision plate 202 and a sight sight hole 203; the fixed base anti-kick plate 101 and the fixed base anti-collision plate 104 are both welded to the fixed base 2, the wire hole 102 is externally connected to the control cabinet, and internally connected to the liquid level electrode 1204 and the motor 1501; the movable base anti-collision plate 202 is welded to the movable base 2 The center angle of the circle is 155°, the sight aiming hole 203 is welded on the movable base anti-collision plate 202, the movable base 2 is located above the fixed base 1, the movable base 2 is semi-surrounded by the fixed base anti-collision plate 104, the centers of the circles coincide at the initial positions, and the minimum radius difference is less than 35mm, which limits the moving range of the movable base 2; the movable base anti-collision plate 202 limits the front and rear positions of the aluminum liquid bag 17, and the sight aiming hole 203 limits the left and right positions of the aluminum liquid bag 17. The diameters of the movable base 2 and the aluminum liquid bag 17 are the same, which is convenient for the forklift driver to observe whether the edges of the aluminum liquid bag 17 and the movable base 2 coincide, and the positioning error is less than 35mm.

[0031] like Figure 4As shown, the aluminum absorption tube 10 includes a steel tube 1001, a lower elbow 1002, an upper elbow 1003, a flange 1004, an aluminum absorption tube mounting plate 1005, bolts 1006, a metal hose 1007 and an aluminum absorption tube support plate 1008; the steel tube 1001 is connected to the side well of the aluminum liquid insulation furnace, the upper and lower flanges 1004 pass through the middle aluminum absorption tube mounting plate 1005, and the metal hose 1007 is retractable.

[0032] like Figure 5 As shown, it is a schematic diagram of the structure of the fixed connection between the aluminum suction tube and the support frame and the transmission system in the present invention. The aluminum suction tube mounting plate 1005 is fixed to the support frame 8 by bolts 1006, and the aluminum suction tube support plate 1008 is welded to the guide lifting frame 7; the transmission system 15 includes a motor 1501, a sprocket 1502, a chain 1503 and a chain protection shell 1504. The motor 1501 drives the sprocket 1502 on the outside of the two columns 3 to rotate synchronously through the steering gear and the shaft, and the chain drive drives the guide lifting frame 7 to slide up and down along the guide rail 5, and the support frame 8 rises and falls with the guide lifting frame 7.

[0033] like Figure 6 As shown in the figure, it is a schematic diagram of the structure of the aluminum liquid bag sealing implemented in the present invention, the sealing cover 12 includes a spring rod 1201, a sealing cover vacuum gauge 1202, a graphite packing 1203 and a liquid level electrode 1204, the sealing cover 12 is cocentric with the fixed base anti-collision plate 104 below, and the sealing cover 12 is hung on the support frame 8 through the spring rod 1201; when the guide lifting frame 7 descends, the graphite packing 1203 clamped on the sealing cover 12 and the fiber cotton 16 fill the gap between the sealing cover 12 and the aluminum liquid bag opening, and the sealing cover 12 and the aluminum liquid bag 17 are connected by the spring. The compression of the rod 1201 produces a flexible docking to form a sealed environment; the jet pump 9 includes an exhaust pipe 901 and a jet pump vacuum gauge 902. The jet pump 9 is connected and fixed to the sealing cover 12 through the exhaust pipe 901. The jet pump vacuum gauge 902 is used to detect the vacuum degree generated by the jet pump 9; when the sealing cover vacuum gauge 1202 detects that the vacuum degree cannot reach 0.06MPa, the sealing state must be readjusted and fiber cotton 16 must be added; when the liquid level electrode 1204 detects the aluminum liquid level, it sends an electrical signal, and the control cabinet turns off the control switch of the gas tank 14 to stop vacuuming.

[0034] like Figure 7 As shown, it is an axonometric view of the aluminum liquid bag in the present invention. The aluminum liquid bag 17 includes a transition flange 1701, an insulation cover 1702 and a bag mouth sealing cover 1703. The circular ring in sealing contact between the transition flange 1701 and the insulation cover 1702 is the aluminum liquid bag mouth, and the aluminum liquid bag mouth is connected to the sealing cover 12. Before starting the vacuum aluminum suction transfer system, it is necessary to confirm that the aluminum liquid bag mouth is aligned with the upper sealing cover 12.

[0035] The working method of this embodiment is as follows:

[0036] 1. Confirm the temperature of aluminum liquid in the holding furnace.

[0037] 2. The forklift driver places the aluminum liquid bag 17 in the middle of the movable base 2 of the vacuum aluminum transfer system, with the opening of the aluminum liquid bag facing the sealing cover 12, and opens the insulation cover 1702.

[0038] 3. Check that there is no debris on the surface of the aluminum liquid ladle, the ladle sealing cover 1703 is closed, and the graphite packing 1203 is in good shape.

[0039] 4. Turn on the start button of the control cabinet, the control switch of the gas storage tank 14 is started, and the motor 1501 drives the sealing cover 12 to move downward to form a sealed environment with the aluminum liquid bag 17.

[0040] 5. When the sealing cover vacuum gauge 1202 detects that the vacuum degree cannot reach 0.06 MPa, lift the sealing cover 12, readjust the sealing state, and add fiber cotton 16.

[0041] 6. After the seal is restored, the equipment is started again to carry out the aluminum liquid transfer operation. When the liquid level electrode 1204 detects the aluminum liquid level, an electrical signal is sent out, the gas storage tank 14 is closed, and the sealing cover 12 rises to complete the aluminum liquid transfer operation.

[0042] 7. At the end of the operation, the aluminum liquid in the inclined aluminum suction tube 10 flows back to the side well of the insulation furnace under the action of gravity, reducing the aluminum slag formed by the cooling of the residual aluminum liquid in the aluminum suction tube 10.

[0043] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, and the above-mentioned specific implementation modes are not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can make other forms without departing from the scope of protection of the purpose of the present invention and the claims, which all belong to the protection scope of the present invention.

Claims

1. A vacuum aluminum transfer system for positioning and sealing aluminum liquid bags, characterized in that: The invention comprises a fixed base (1) on which a movable base (2) and fixedly installed columns (3) are disposed; a heat dissipation mask (4) is installed between two columns (3); guide rails (5) are installed outside the two columns (3); a wire protection tube (6) is connected to the heat dissipation mask (4) and a support frame (8); a guide lifting frame (7) obtains power through a transmission system (15) to slide along the guide rails (5); the support frame (8) is fixedly connected to the guide lifting frame (7) and an inclined aluminum suction tube (10) respectively; a sealing cover (12) is hung on the support frame (8) through a spring rod (1201); a jet pump (9) is connected and fixed to the sealing cover (12) through an exhaust pipe (901); a gas storage tank (14) is connected to the jet pump (9) through an air intake pipe (11); and a pressure gauge (13) detects the air pressure of the gas storage tank (14).

2. A vacuum aluminum suction and transfer system for realizing aluminum liquid bag positioning and sealing according to claim 1, characterized in that: The movable base (2) comprises a movable base forklift hole (201), a movable base anti-collision plate (202) and a sight sight hole (203); the movable base (2) is located above the fixed base (1), and the movable base (2) is semi-surrounded by the fixed base anti-collision plate (104); the diameter of the aluminum liquid bag (17) is the same as the diameter of the movable base (2), the aluminum liquid bag (17) is placed on the movable base (2) by a forklift, the movable base anti-collision plate (202) limits the front and rear position of the aluminum liquid bag (17), and the sight sight hole (203) limits the left and right position of the aluminum liquid bag (17).

3. The vacuum aluminum suction and transfer system for realizing aluminum liquid bag positioning and sealing according to claim 1 is characterized in that: The aluminum absorption tube (10) comprises a steel tube (1001), a lower elbow (1002), an upper elbow (1003), a flange (1004), an aluminum absorption tube mounting plate (1005), bolts (1006), a metal hose (1007) and an aluminum absorption tube support plate (1008); the aluminum absorption tube (10) passes through a sealing cover (12) to connect it with the side well of the aluminum liquid insulation furnace; the upper and lower flanges (1004) pass through the middle aluminum absorption tube mounting plate (1005); the aluminum absorption tube mounting plate (1005) is fixed to the support frame (8) by bolts (1006); and the aluminum absorption tube support plate (1008) is welded to the guide lifting frame (7); when aluminum absorption is completed, the aluminum liquid in the inclined aluminum absorption tube (10) flows back to the side well of the insulation furnace under the action of gravity.

4. The vacuum aluminum suction and transfer system for realizing aluminum liquid bag positioning and sealing according to claim 1 is characterized in that: The transmission system (15) comprises an electric motor (1501), a sprocket (1502), a chain (1503) and a chain protection shell (1504); the electric motor (1501) drives the sprockets (1502) on the outsides of the two columns (3) to rotate synchronously through a steering gear and a shaft, and the chain drive drives the guide lifting frame (7) to slide up and down along the guide rail (5), and the support frame (8) is lifted and lowered along with the guide lifting frame (7).

5. The vacuum aluminum suction and transfer system for realizing the positioning and sealing of the aluminum liquid bag according to claim 1 is characterized in that: The sealing cover (12) comprises a spring rod (1201), a sealing cover vacuum gauge (1202), a graphite packing (1203) and a liquid level electrode (1204); the sealing cover (12) is cocentric with the fixed base anti-collision plate (104) below; as the guide lifting frame (7) descends, the graphite packing (1203) clamped on the sealing cover (12) and the fiber cotton (16) fill the gap between the sealing cover (12) and the aluminum liquid bag opening; the sealing cover (12) and the aluminum liquid bag (17) are flexibly connected to form a sealed environment through the compression of the spring rod (1201); the sealing cover vacuum gauge (1202) detects the vacuum degree in the aluminum liquid bag; when the liquid level electrode (1204) detects the aluminum liquid level, it sends an electrical signal, closes the control switch of the gas storage tank (14), and stops vacuuming.

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