Purification smelting device for recycling aluminum alloy waste

Abstract

The invention relates to the technical field of aluminum alloy waste machining equipment, in particular to a purifying and smelting device for recycling aluminum alloy waste. Comprising a bottom plate and a smelting furnace, the smelting furnace is arranged on the bottom plate and used for smelting aluminum alloy waste, a supporting frame is arranged on the bottom plate, and a hollow frame is installed on the supporting frame. By arranging the automatic feeding mechanism and the inclined rotary drum structure, automatic operation of the whole process from conveying, pretreatment to furnace entering of aluminum alloy waste is achieved, operators are prevented from making close contact with a high-temperature smelting furnace, harm to workers caused by heat radiation, metal splashing and sudden accidents is effectively reduced, and the production efficiency is improved. The heater and the discharging mechanism are arranged in the device, before the aluminum alloy waste enters the smelting furnace, residual water on the surface of the aluminum alloy waste can be fully evaporated to dryness, steam is discharged in time through a negative pressure system formed through suction of the air pump, the possibility of steam explosion caused by damp waste is fundamentally reduced, and stable equipment operation and personnel safety are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy waste processing equipment, and particularly relates to a purification melting device for recycling aluminum alloy waste. Background Art

[0002] With the increasing global resource tension and the enhancement of environmental protection awareness, the recycling of metal materials has become an important part of the sustainable development of the industry. Aluminum alloys are widely used in many fields such as aerospace, transportation, architectural decoration, and electronics and electrical appliances due to their excellent properties such as low density, high strength, and corrosion resistance. However, aluminum is a high-energy-consuming metal, and its primary production process requires a large amount of energy. Therefore, recycling waste aluminum to remanufacture aluminum alloy products can not only save energy but also effectively reduce environmental pollution. In the process of recycling aluminum alloy waste, melting is a key link. This process usually refers to feeding the pre-treated (such as classified, cleaned, crushed, etc.) aluminum alloy waste into a furnace and melting it into liquid metal at high temperature for subsequent casting or alloy blending. In order to improve the melting efficiency and reduce the loss of metal oxidation, flux is often added during the melting process. These fluxes help to reduce the viscosity of the slag, promote the separation of impurities, and form a protective coating to reduce the contact between the molten aluminum and air.

[0003] However, in the current aluminum alloy waste recycling industry, there are still many technical problems and safety hazards. First, many enterprises still use manual methods to put waste into the furnace. Since the internal temperature of the furnace is extremely high (up to over \(700^{\circ}C\)) during operation, workers need to operate at close range and are extremely vulnerable to heat radiation, flying objects, or sudden accidents, posing a great safety risk. Second, some waste contains moisture due to improper storage or incomplete cleaning. When heated to a high temperature, the moisture quickly vaporizes to generate steam, resulting in violent expansion and even "steam explosion", which is one of the most common safety accidents in the current aluminum alloy recycling industry. Such accidents not only threaten the lives of operators but also may damage equipment, affect production continuity, and cause economic losses. Summary of the Invention

[0004] In view of this, the present invention provides a purification melting device for recycling aluminum alloy waste, which can solve the problems that in the aluminum alloy waste recycling industry, workers need to operate at close range and are extremely vulnerable to heat radiation, flying objects, or sudden accidents, posing a great safety risk, and some waste contains moisture due to improper storage or incomplete cleaning and is prone to "steam explosion".

[0005] The technical implementation solution of the present invention is: A purification melting device for recycling aluminum alloy waste, including a bottom plate and a melting furnace. The melting furnace is arranged on the bottom plate and is used for melting the aluminum alloy waste. A support frame is arranged on the bottom plate, and a hollow frame is installed on the support frame. A rotating cylinder is rotatably arranged inside the hollow frame. A feeding mechanism is arranged on the bottom plate, and the feeding mechanism is used for feeding the aluminum alloy waste into the rotating cylinder. Through holes are spacedly arranged on the rotating cylinder, and the through holes are used for separating impurities on the aluminum alloy waste. A heater is arranged on the hollow frame, and the heater is used for evaporating the moisture on the aluminum alloy waste. A rotating mechanism is arranged on the hollow frame, and the rotating mechanism is used for driving the rotating cylinder to rotate. A guiding frame and a discharging frame are arranged on the hollow frame. The guiding frame is used for guiding the aluminum alloy waste into the melting furnace, and the discharging frame is used for discharging the impurities inside the hollow frame. A discharging mechanism for discharging steam is arranged on the hollow frame.

[0006] Optionally, the feeding mechanism includes a conveyor and a hopper. The conveyor is installed on the top of the bottom plate and is used for feeding the aluminum alloy waste into the rotating cylinder, and a hopper is arranged on the conveyor.

[0007] Optionally, the rotating mechanism includes a toothed ring, a motor and a gear. The toothed ring is connected to the rotating cylinder, the motor is connected to the hollow frame, and the output shaft of the motor is connected to the gear, and the gear meshes with the toothed ring.

[0008] Optionally, the discharging mechanism includes an air pump and an air pipe. The air pump is arranged on the heater, and the air inlet of the air pump is communicated with the inner side of the hollow frame through the air pipe.

[0009] Optionally, it further includes a collection box. The collection box is arranged on the bottom plate and is used for collecting the impurities falling out of the discharging frame.

[0010] Optionally, it further includes a cleaning mechanism. The cleaning mechanism includes a liquid storage barrel, a water spraying pipe, a water pump and a water conveying pipe. The liquid storage barrel is arranged on the bottom plate, the water spraying pipe is arranged on the hollow frame, the water pump is installed at the bottom inside the liquid storage barrel, and the water outlet of the water pump is communicated with the water spraying pipe through the water conveying pipe.

[0011] Optionally, it further includes a filter screen and a connecting frame. A liquid drainage hole is opened on the guiding frame, the filter screen is connected at the liquid drainage hole of the guiding frame, and a connecting frame is communicated between the liquid drainage hole of the guiding frame and the discharging frame.

[0012] Optionally, it further includes a vibrator. The vibrator is spacedly installed on the outer side of the rotating cylinder, and the vibrator is used for driving the rotating cylinder to vibrate.

[0013] The present invention has the following advantages: 1. By setting up an automatic feeding mechanism and an inclined rotating drum structure, the present invention realizes the automated operation of the whole process from the transportation, pretreatment to the furnace charging of aluminum alloy waste, avoiding the close contact of operators with the high-temperature furnace, effectively reducing the harm caused by heat radiation, metal splashing and sudden accidents to the staff. Moreover, the device is equipped with a heater and a discharging mechanism, which can fully evaporate the residual moisture on the surface of the aluminum alloy waste before it enters the furnace, and use the negative pressure system formed by the air pump suction to discharge the steam in time, fundamentally reducing the possibility of "steam explosion" caused by the wet waste, and ensuring the stable operation of the equipment and the safety of personnel.

[0014] 2. During the rotation of the rotating drum, the waste is driven to turn over, so that the sundries in the waste fall into the hollow frame through the through holes and are then discharged through the discharge frame, thus realizing the preliminary cleaning and sorting of the waste. This design not only reduces the impurity load in the subsequent smelting process, but also helps to improve the smelting purity and efficiency of aluminum alloy.

[0015] 3. The present invention is provided with a filter screen and a connecting frame on the material guiding frame, which can guide the liquid generated during the cleaning or heating process to the discharge frame for discharge, avoiding the liquid from entering the furnace by mistake and causing explosion hazards or cleaning difficulties, and further enhancing the safety and environmental protection of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 is a three-dimensional structural schematic diagram of the feeding mechanism of the present invention.

[0018] Figure 3 is a three-dimensional structural schematic diagram of the rotating mechanism of the present invention.

[0019] Figure 4 is a three-dimensional structural schematic diagram of the hollow frame, rotating drum and heater of the present invention.

[0020] Figure 5 is a three-dimensional structural schematic diagram of the hollow frame, material guiding frame and discharge frame of the present invention.

[0021] Figure 6 is a three-dimensional structural schematic diagram of the discharging mechanism of the present invention.

[0022] Figure 7 is a three-dimensional structural schematic diagram of the collection frame and cleaning mechanism of the present invention.

[0023] Figure 8 is a three-dimensional structural schematic diagram of the water spray pipe, water pump and water delivery pipe of the present invention.

[0024] Figure 9 is a three-dimensional structural schematic diagram of the filter screen, connecting frame and vibrator of the present invention.

[0025] Meanings of the reference numerals in the figure: 1: bottom plate, 2: melting furnace, 3: support frame, 4: hollow frame, 5: rotating drum, 601: conveyor, 602: hopper, 7: through hole, 8: heater, 901: toothed ring, 902: motor, 903: gear, 10: material guiding frame, 11: discharge frame, 1201: air pump, 1202: air pipe, 13: collection frame, 14: liquid storage barrel, 15: water spraying pipe, 16: water pump, 17: water delivery pipe, 18: liquid discharge hole, 19: filter screen, 20: connection frame, 21: vibrator. Detailed implementation manners

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Embodiment: A purification and melting device for recycling aluminum alloy waste, see Figures 1-6As shown in the figure, it includes a bottom plate 1 and a melting furnace 2; a melting furnace 2 is arranged on the left side of the top of the bottom plate 1, and the melting furnace 2 is used for melting aluminum alloy waste; it also includes a support frame 3, a hollow frame 4, a rotating cylinder 5, a feeding mechanism, a heater 8, a rotating mechanism, a material guiding frame 10, a discharging frame 11 and a discharging mechanism; support frames 3 are symmetrically arranged on the front and back of the left side of the top of the bottom plate 1, and both of the two support frames 3 are located on the right side of the melting furnace 2; a hollow frame 4 is installed between the upper sides of the two support frames 3, and the hollow frame 4 is in an inclined state with the left side lower and the right side higher; a rotating cylinder 5 is rotatably arranged inside the hollow frame 4, and the rotating cylinder 5 is in an inclined state with the left side lower and the right side higher; a feeding mechanism is arranged on the bottom plate 1, and the feeding mechanism is used for feeding aluminum alloy waste into the rotating cylinder 5; through holes 7 are spacedly arranged on the rotating cylinder 5, and the through holes 7 communicate with the inside of the hollow frame 4, and the through holes 7 are used for separating impurities on the aluminum alloy waste into the hollow frame 4; a heater 8 is arranged on the hollow frame 4, and the heater 8 is used for drying the moisture on the aluminum alloy waste; a rotating mechanism is arranged on the hollow frame 4, and the rotating mechanism is used for driving the rotating cylinder 5 to rotate, so that the rotating cylinder 5 drives the aluminum alloy waste therein to turn over; the lower left side of the hollow frame 4 is connected with a material guiding frame 10, and the material guiding frame 10 is used for guiding the aluminum alloy waste into the melting furnace 2; the bottom left side of the hollow frame 4 is communicated with a discharging frame 11, and the discharging frame 11 is used for discharging impurities in the hollow frame 4; a discharging mechanism for discharging steam is arranged on the hollow frame 4.

[0031] See Figure 2 As shown in the figure, the feeding mechanism includes a conveyor 601 and a hopper 602; the conveyor 601 is installed on the right side of the top of the bottom plate 1, and the conveyor 601 is used for feeding aluminum alloy waste into the rotating cylinder 5; a hopper 602 is arranged on the lower right side of the conveyor 601.

[0032] See Figure 3 and Figure 4 As shown in the figure, the rotating mechanism includes a toothed ring 901, a motor 902 and a gear 903; the toothed ring 901 is connected to the right side of the rotating cylinder 5; the motor 902 is connected to the lower right side of the bottom of the hollow frame 4; a gear 903 is connected to the output shaft of the motor 902, and the gear 903 meshes with the toothed ring 901.

[0033] See Figure 6 As shown in the figure, the discharging mechanism includes an air pump 1201 and an air pipe 1202; the air pump 1201 is arranged on the top of the heater 8; the air inlet of the air pump 1201 is communicated with the air pipe 1202, and the air pipe 1202 communicates with the inside of the hollow frame 4.

[0034] During use, put the aluminum alloy waste into the hopper 602, so that the aluminum alloy waste slides down through the hopper 602 onto the conveyor belt of the conveyor 601. Then, send the aluminum alloy waste into the rotating drum 5 through the conveyor 601, and the aluminum alloy waste gradually slides down to the lower left side under the influence of gravity inside the rotating drum 5. During this period, drive the gear 903 to rotate through the motor 902, so that the gear 903 drives the toothed ring 901 and the rotating drum 5 to rotate, thereby driving the rotating drum 5 to turn over the aluminum alloy waste, separating the aluminum alloy waste from the sundries remaining in it, making the sundries fall inside the rotating drum 5 and enter the inner side of the hollow frame 4 through the through hole 7. As the sundries enter the inner side of the hollow frame 4, the sundries will also slide down to the lower left side under the influence of gravity inside the hollow frame 4 until the sundries fall out through the discharge frame 11. When driving the gear 903 to rotate through the motor 902, at the same time, heat the aluminum alloy waste inside the rotating drum 5 through the heater 8, which can evaporate the remaining moisture on the aluminum alloy waste to form steam. Then, use the air pump 1201 to extract the air inside the hollow frame 4 through the air pipe 1202, which can form a negative pressure inside the hollow frame 4 to suck the steam inside the rotating drum 5 through the through hole 7, and then discharge the steam inside the hollow frame 4 through the air pipe 1202 and the air pump 1201. When the aluminum alloy waste inside the rotating drum 5 is turned over and heated, the remaining moisture and sundries on the aluminum alloy waste can be cleaned. When the aluminum alloy waste inside the rotating drum 5 slides down to the lower left side and falls into the guide frame 10, the guide frame 10 will guide the aluminum alloy waste into the melting furnace 2. In this way, the aluminum alloy waste can be automatically put into the melting furnace 2, thus avoiding the user from being injured by thermal radiation, splashes or sudden accidents at close range and improving safety. Then, the aluminum alloy waste can be purified and melted by the melting furnace 2.

[0035] See Figure 7 As shown, it further includes a collection box 13; the collection box 13 is placed on the left side at the top of the bottom plate 1, and the collection box 13 is used to collect the sundries falling out of the discharge frame 11.

[0036] By setting the collection box 13, when the sundries fall out through the discharge frame 11, the collection box 13 can be used to collect the sundries falling out of the discharge frame 11, so that the user can centrally process the sundries later.

[0037] See Figure 7 and Figure 8 As shown, it further includes a cleaning mechanism, and the cleaning mechanism includes a liquid storage bucket 14, a water spray pipe 15, a water pump 16 and a water delivery pipe 17; the liquid storage bucket 14 is arranged on the front left side at the top of the bottom plate 1; the water spray pipe 15 is arranged on the upper side of the hollow frame 4; the water pump 16 is installed at the bottom inside the liquid storage bucket 14; the water outlet of the water pump 16 is communicated with a water delivery pipe 17, and the water delivery pipe 17 is communicated with the water spray pipe 15.

[0038] By setting up a cleaning mechanism, after the purification and melting device is used, the motor 902 can be driven to rotate the gear 903, so that the gear 903 drives the toothed ring 901 and the rotating cylinder 5 to rotate. Then, the cleaning liquid is added into the liquid storage barrel 14, and then the water pump 16 is used to pump the cleaning liquid into the water spraying pipe 15 through the water delivery pipe 17, so that the water spraying pipe 15 sprays the cleaning liquid on the inner side of the rotating cylinder 5, thereby cleaning the inner side of the rotating cylinder 5 to prevent sundries from adhering to the inner side of the rotating cylinder 5.

[0039] See Figure 9 As shown, it further includes a filter screen 19 and a connecting frame 20; a liquid discharge hole 18 is formed in the material guiding frame 10; the filter screen 19 is connected to the liquid discharge hole 18 of the material guiding frame 10; a connecting frame 20 is communicated between the liquid discharge hole 18 of the material guiding frame 10 and the discharge frame 11.

[0040] By setting up the filter screen 19 and the connecting frame 20, when there is liquid flowing into the material guiding frame 10 from the inner side of the rotating cylinder 5, the liquid in the material guiding frame 10 will flow into the connecting frame 20 through the liquid discharge hole 18 and the filter screen 19, and then the connecting frame 20 introduces the liquid into the discharge frame 11 for discharge. In this way, when there is liquid flowing into the material guiding frame 10 from the inner side of the rotating cylinder 5, it can prevent the material guiding frame 10 from introducing the liquid into the melting furnace 2, thereby not only avoiding the occurrence of "steam explosion", but also avoiding a large amount of cleaning liquid entering the melting furnace 2, causing trouble in cleaning.

[0041] See Figure 9 As shown, it further includes a vibrator 21, and the vibrator 21 is installed at intervals on the left part of the outer side of the rotating cylinder 5, and the vibrator 21 is used to drive the rotating cylinder 5 to vibrate.

[0042] By setting up the vibrator 21, during use, the vibrator 21 can be used to drive the rotating cylinder 5 to vibrate, thereby vibrating off the foreign matters adhering to the inner and outer sides of the rotating cylinder 5 to prevent the foreign matters from adhering to the inner and outer sides of the rotating cylinder 5, causing difficulty in cleaning.

[0043] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A purification and melting device for recycling aluminum alloy waste, comprising a bottom plate (1) and a melting furnace (2). The melting furnace (2) is arranged on the bottom plate (1), and the melting furnace (2) is used for melting aluminum alloy waste. It is characterized in that: A support frame (3) is provided on the bottom plate (1). A hollow frame (4) is installed on the support frame (3). A rotating cylinder (5) is rotatably arranged inside the hollow frame (4). A feeding mechanism is provided on the bottom plate (1), and the feeding mechanism is used to feed aluminum alloy waste into the rotating cylinder (5). Through holes (7) are spacedly arranged on the rotating cylinder (5), and the through holes (7) are used to separate impurities on the aluminum alloy waste. A heater (8) is provided on the hollow frame (4), and the heater (8) is used to evaporate the moisture on the aluminum alloy waste. A rotating mechanism is provided on the hollow frame (4), and the rotating mechanism is used to drive the rotating cylinder (5) to rotate. A guiding frame (10) and a discharging frame (11) are provided on the hollow frame (4). The guiding frame (10) is used to guide the aluminum alloy waste into the melting furnace (2), and the discharging frame (11) is used to discharge the impurities inside the hollow frame (4). A discharging mechanism for discharging steam is provided on the hollow frame (4).

2. A purification and melting device for recycling aluminum alloy waste according to claim 1, characterized in that: The feeding mechanism includes a conveyor (601) and a hopper (602). The conveyor (601) is installed on the top of the bottom plate (1), and the conveyor (601) is used to feed the aluminum alloy waste into the rotating cylinder (5). A hopper (602) is provided on the conveyor (601).

3. A purification and melting device for recycling aluminum alloy waste according to claim 1, characterized in that: The rotating mechanism includes a toothed ring (901), a motor (902) and a gear (903). The toothed ring (901) is connected to the rotating cylinder (5), the motor (902) is connected to the hollow frame (4), and a gear (903) is connected to the output shaft of the motor (902). The gear (903) meshes with the toothed ring (901).

4. A purification and melting device for recycling aluminum alloy waste according to claim 1, characterized in that: The discharging mechanism includes an air pump (1201) and an air pipe (1202). The air pump (1201) is provided on the heater (8), and the air inlet of the air pump (1201) is communicated with the inner side of the hollow frame (4) through the air pipe (1202).

5. A purification and melting device for recycling aluminum alloy waste according to claim 1, characterized in that: It also includes a collection frame (13). The collection frame (13) is provided on the bottom plate (1), and the collection frame (13) is used to collect the impurities falling out of the discharging frame (11).

6. A purification melting device for recycling aluminum alloy waste according to claim 1, characterized in that: It also includes a cleaning mechanism. The cleaning mechanism includes a liquid storage barrel (14), a water spraying pipe (15), a water pump (16) and a water conveying pipe (17). The liquid storage barrel (14) is provided on the bottom plate (1), the water spraying pipe (15) is provided on the hollow frame (4), a water pump (16) is installed at the inner bottom of the liquid storage barrel (14), and the water outlet of the water pump (16) is communicated with the water spraying pipe (15) through the water conveying pipe (17).

7. A purification and melting device for recycling aluminum alloy waste according to claim 1, characterized in that: It also includes a filter screen (19) and a connecting frame (20). A liquid discharge hole (18) is opened on the guiding frame (10). A filter screen (19) is connected to the liquid discharge hole (18) of the guiding frame (10), and a connecting frame (20) is communicated between the liquid discharge hole (18) of the guiding frame (10) and the discharging frame (11).

8. A purification and melting device for recycling aluminum alloy waste according to claim 1, characterized in that: It also includes a vibrator (21). The vibrator (21) is spacedly installed on the outer side of the rotating cylinder (5), and the vibrator (21) is used to drive the rotating cylinder (5) to vibrate.

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