CN108998681B - A rapid melting device for recycled aluminum scraps - Google Patents

Abstract

The invention discloses a rapid melting device for aluminum scrap recycled aluminum, which includes an aluminum scrap melting unit, an aluminum scrap transport unit and an oil fume treatment unit. The aluminum scrap melting unit includes an aluminum liquid pump and a vortex pool. Below the aluminum liquid pump A pump pool is provided, and a pump pool channel is provided at the bottom of the pump pool. The pump pool and the furnace are connected through the pump pool channel. A connecting channel is provided between the pump pool and the vortex pool. A vortex pool channel is provided at the bottom, and the vortex pool communicates with the furnace through the vortex pool channel. The aluminum chip transport unit and the oil fume treatment unit are arranged above the vortex pool. The invention adopts the aluminum scrap recycled aluminum rapid melting device with the above structure, which can solve the problems of high burning rate of aluminum scrap, low energy utilization rate and environmental pollution during the melting process. It is an aluminum scrap with high efficiency, energy saving and high degree of automation. Smelting device.

Description

A rapid melting device for recycled aluminum scraps

Technical field

The invention belongs to the technical field of aluminum scrap recycling devices, and in particular relates to a rapid melting device for recycled aluminum scraps.

Background technique

A lot of aluminum chips will be produced during the processing of aluminum products. The recycling and reuse of aluminum chips is undoubtedly an effective way to save energy, reduce consumption and reduce costs. Melting aluminum scraps into liquid aluminum or aluminum ingots is the main method of recycling aluminum scraps.

The current method of recycling aluminum chips is to use a melting furnace to melt the aluminum chips. Because the surface area of the aluminum chips is large, the burning loss is serious when it comes into contact with the flame. Therefore, try to keep the aluminum chips away from the flame during the melting process to reduce the burning loss. Therefore, when melting aluminum scraps, first melt a certain amount of aluminum ingots in the melting furnace so that there is a certain depth of aluminum liquid inside, then put the lump-shaped aluminum scraps into the aluminum liquid, and use the high-temperature aluminum liquid to melt Aluminum chips are melted away to reduce burning loss.

However, since the density of the aluminum chips is smaller than that of the liquid aluminum, the aluminum chips will float on the surface of the liquid, causing some of the aluminum chips to come into contact with the flame and cause burning. This cannot fundamentally solve the problem of burning of aluminum chips when they come into contact with the flame. . Moreover, aluminum chips also contain a certain amount of moisture and oil stains. Moisture and oil stains will produce oily fumes at high temperatures. Frequent opening and closing of the furnace door is required to release the oily fumes in the melting furnace. However, frequent opening and closing of the furnace door will dissipate a lot of heat and reduce the efficiency of gas use; it will also increase the temperature of the surrounding environment and dissipate oil fumes into the surrounding air, causing air pollution.

Contents of the invention

The purpose of the present invention is to provide a rapid melting device for aluminum scrap recycled aluminum to solve the problems of high burning loss rate, low energy utilization rate and environmental pollution caused by aluminum scrap during the melting process.

In order to achieve the above object, the present invention provides a rapid melting device for aluminum scrap recycled aluminum, which includes an aluminum scrap melting unit, an aluminum scrap conveying unit and an oil fume treatment unit. The aluminum scrap melting unit includes an aluminum liquid pump and a vortex pool. A pump pool is provided below the aluminum liquid pump, and a pump pool channel is provided at the bottom of the pump pool. The pump pool and the furnace are connected through the pump pool channel, and a connecting channel is provided between the pump pool and the vortex pool. A vortex pool channel is provided at the bottom of the vortex pool, and the vortex pool communicates with the furnace through the vortex pool channel. The aluminum chip transport unit and the oil fume treatment unit are arranged above the vortex pool.

Preferably, the impeller of the aluminum liquid pump is located at the lower part of the pump tank, and the liquid inlet of the connecting channel is located on the side wall of the pump tank where the impeller is located.

Preferably, the liquid outlet of the connecting channel is located at the upper part of the vortex pool, and the liquid outlet is located on the tangent line of the horizontal section of the vortex pool.

Preferably, the pump sump channel is located at the bottom of the furnace, and the pump sump channel is in the shape of a trumpet with a large opening at the end of the furnace.

Preferably, the aluminum chip processing unit includes a conveyor, a feeding pipe and a feeding pipe, and the conveyor and the feeding pipe are connected through the feeding pipe.

Preferably, the oil fume treatment unit includes a blower, an air duct and a smoke chamber, the blower is connected to the feeding pipe through the air duct, the air duct is sealingly connected to the feeding pipe, and the feeding pipe is sealed. The material tube is inserted into the flue gas chamber, the flue gas chamber is located above the vortex pool, and the flue gas chamber is connected with the vortex pool.

Preferably, the flue gas chamber communicates with the furnace.

Preferably, the outlet of the feeding pipe is located at the lower part of the flue gas chamber.

A device for rapid melting of aluminum chips according to the invention is provided with an aluminum liquid pump and a vortex pool. Under the action of the centrifugal force of the aluminum liquid pump, the aluminum liquid in the pump pool is thrown into a connecting channel. The liquid outlet of the connecting channel is located at On the tangent line of the horizontal section of the vortex pool, the aluminum liquid in the connecting channel enters the vortex pool along the tangent line, and a vortex is formed in the vortex pool. The aluminum chips transported from the feeding pipe fall into the vortex pool and are fully stirred and mixed. Melting, aluminum chips melting efficiency is high. The aluminum liquid in the pump pool throws the aluminum liquid into the connecting channel under the action of centrifugal force. As the aluminum liquid in the pump pool decreases, the high-temperature aluminum liquid in the furnace enters the pump pool through the pump pool channel. The temperature of the molten aluminum will decrease as the aluminum chips melt, and the low-temperature molten aluminum can be returned to the furnace for heating again through the vortex pool channel. The aluminum chips do not contact the flame during the melting process, and the burning loss is small; a complete circulation pipeline is formed between the furnace, pump pool and eddy pool, which can continuously melt the aluminum chips. The oil fume generated during the melting process of aluminum chips is collected in the flue gas chamber. The blower can prevent the oil fume from escaping from the feeding pipe. Under the action of the blower, the oil fume can only enter the high-temperature furnace for full combustion, and then moves with the furnace body. The flue enters the dust removal equipment. The oil fume generated during the melting process of aluminum chips does not need to be treated separately, which improves work efficiency and gas utilization. The invention describes a rapid melting device for recycled aluminum chips, which can solve the problems of high burning loss rate of aluminum chips during the melting process, low energy utilization rate, and poor working environment in the workshop.

The technical solution of the present invention will be further described in detail below through the accompanying drawings and examples.

Description of the drawings

Figure 1 is a schematic structural diagram of an embodiment of a rapid melting device for aluminum scrap recycled aluminum according to the present invention;

Figure 2 is a schematic diagram of the pump tank channel structure of an embodiment of a rapid melting device for recycled aluminum scraps according to the present invention;

Reference signs

1. Aluminum liquid pump; 2. Pump pool; 3. Pump pool channel; 4. Connection channel; 5. Eddy pool channel; 6. Eddy pool; 7. Flue gas chamber; 8. Feed pipe; 9. Discharge pipe ; 10. Conveyor; 11. Air duct; 12. Blower; 13. Furnace.

Detailed ways

Example

The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides detailed implementation modes and specific operating processes. However, the protection scope of the present invention is not limited to this invention. Example.

Figure 1 is a schematic structural diagram of an embodiment of a rapid melting device for aluminum scrap recycled aluminum according to the present invention. Figure 2 is a schematic structural diagram of a pump tank channel according to an embodiment of a rapid melting device for aluminum scrap recycled aluminum according to the present invention. As shown in Figures 1 to 2, the present invention provides a rapid melting device for aluminum scrap recycled aluminum, including an aluminum scrap melting unit, an aluminum scrap conveying unit and an oil fume treatment unit. The aluminum chip melting unit includes an aluminum liquid pump 1 and a vortex pool 6. A pump pool 2 is provided below the aluminum liquid pump 1. The impeller of the aluminum liquid pump 1 is located at the lower part of the pump pool 2. A pump pool channel 3 is provided at the bottom of the pump pool 2. The pump pool 2 communicates with the furnace 13 through the pump pool channel 3. The pump pool channel 3 is in the shape of a trumpet with a large opening at the end of the furnace 13, which is conducive to the high-temperature aluminum liquid in the furnace 13 flowing into the pump pool channel 3; the liquid inlet of the pump pool channel 3 is located at the bottom of the furnace 13, which can ensure that the liquid in the furnace 13 There is enough aluminum liquid flowing into the pump pool 2, and the aluminum liquid at the bottom of the furnace 13 is relatively pure. There is a connecting channel 4 between the pump pool 2 and the vortex pool 6. The liquid inlet of the connecting channel 4 is located on the side wall of the pump pool 2 where the impeller is located. The liquid inlet of the connecting channel 4 is set close to the impeller, which is beneficial to aluminum. The liquid is thrown into the connecting channel 4 under the action of centrifugal force. The liquid outlet of the connecting channel 4 is located at the upper part of the vortex pool 6, which ensures that the high-temperature aluminum liquid in the upper part of the vortex pool 6 first contacts the aluminum chips, thereby improving the melting efficiency of the aluminum chips; the liquid outlet is located at the tangent of the horizontal section of the vortex pool 6 On the top, the liquid in the connecting channel 4 enters along the tangent line on the side wall of the vortex pool 6 under the action of inertia. The aluminum liquid will move along the side wall of the vortex pool 6, forming a vortex in the upper part of the vortex pool 6, and the aluminum chips enter It is stirred by the upper vortex in the vortex pool 6 and melts rapidly. The bottom of the vortex pool 6 is provided with a vortex pool channel 5. The vortex pool channel 5 can also be set in a trumpet shape with a large opening at the end of the furnace 13. The vortex pool 6 communicates with the furnace 13 through the vortex pool channel 5. As the aluminum liquid in the vortex pool 6 As the amount continues to increase, the aluminum liquid with a lower temperature at the bottom of the vortex pool 6 will flow into the furnace 13 through the vortex pool channel 5 and be reheated. The position of the liquid outlet of the vortex pool channel 5 on the furnace 13 can be higher than the position of the liquid inlet of the pump pool channel 3 on the furnace 13. This can prevent the aluminum liquid flowing out from the vortex pool 6 from being purified and heated up. It is sucked into the pump pool 2. The pump pool channel 3 and the vortex pool channel 5 are also provided with liquid outlets, and the aluminum liquid remaining in the pump pool channel and the vortex pool channel is discharged through the liquid outlets.

An aluminum chip transport unit and an oil fume treatment unit are provided above the vortex pool 6 . The aluminum chip processing unit includes a conveyor 10 , a feeding pipe 9 and a feeding pipe 8 . The conveyor 10 and the feeding pipe 8 are connected through the feeding pipe 9 . The oil fume treatment unit includes a blower 12, an air duct 11 and a flue gas chamber 7. The blower 12 is connected to the feeding pipe 8 through the air duct 11. The air duct 11 is sealingly connected to the feeding pipe 8. The feeding pipe 8 is connected from the flue gas chamber 7 The top is inserted into the flue gas chamber 7, and the feeding pipe 8 is sealed and connected with the top of the flue gas chamber 7 to prevent oil fumes in the flue gas chamber 7 from escaping. The flue gas chamber 7 is located above the vortex pool 6. The flue gas chamber 7 is connected with the vortex pool 6. The oil smoke generated by the moisture and oil stains in the aluminum chips under the action of high temperature will be collected in the flue gas chamber 7. The flue gas chamber 7 is connected with the furnace 13, and the blower 12 can prevent the oil fume in the flue gas chamber 7 from entering the feeding pipe 8. The oil fume in the flue gas chamber 7 can only enter the high-temperature furnace 13, and the oil fume is fully transported in the furnace 13. After combustion, it is discharged out of the furnace through the flue, which reduces air pollution caused by direct emission of oil smoke. The setting of the oil fume treatment unit can avoid energy waste caused by frequent opening and closing of the furnace door and achieve the purpose of energy saving and emission reduction. The outlet of the feeding pipe 8 is located at the lower part of the flue gas chamber 7 and is located close to the vortex pool 6 .

The working process is as follows: After the aluminum liquid pump 1 is installed, it forms a complete centrifugal pump with the pump pool 2. When the centrifugal pump rotates, under the action of centrifugal force, the aluminum liquid in the pump pool 2 flows along the vortex pool through the connecting channel 4 The tangential direction of the side wall of 6 enters the vortex pool 6 and forms a vortex. The bottom of the vortex pool 6 is connected to the high-temperature aluminum liquid in the furnace 13 through the vortex pool channel 5. The aluminum liquid in the vortex pool 6 is moved at the bottom under the action of gravity. The low-temperature aluminum liquid will flow into the furnace 13 for reheating. After the aluminum liquid in the pump pool 2 enters the vortex pool 6, the amount of aluminum liquid in the pump pool 2 decreases, and under the stirring of the impeller of the aluminum liquid pump 1, a vacuum area will be formed in the center of the impeller. The gravity of the aluminum liquid in the furnace 13 Next, the high-temperature aluminum in the furnace 13 is hydraulically pumped into the pump pool 2. The furnace 13, the pump pool 2 and the vortex pool 6 form a complete circulation path to achieve continuous melting of aluminum chips. The aluminum chips enter the conveyor 10 after preliminary treatment. The conveyor 10 continuously and evenly transports the aluminum chips into the feeding pipe 8, and finally reaches the vortex pool 6 to be mixed and melted with the aluminum liquid, and finally flows into the furnace 13. Flue gas generated by moisture and oil stains in aluminum chips at high temperature enters the flue gas chamber 7, and the blower 12 blows air into the feeding pipe 8, and finally presses the flue gas into the high-temperature furnace 13 for full combustion, and passes through the furnace body The flue enters the dust removal equipment.

Therefore, the present invention adopts the aluminum scrap recycled aluminum rapid melting device with the above structure to realize rapid and continuous melting of aluminum scrap; avoids direct contact between aluminum scrap and flame, reduces the burning rate of aluminum scrap; and reduces the oil fume generated by aluminum scrap. It can be reused and finally discharged with the flue, which reduces environmental pollution; continuous melting is achieved during the melting process of aluminum chips, and there is no need to open and close the furnace door during this period, which improves energy utilization. The aluminum scrap recycled aluminum rapid melting device of the present invention is an aluminum scrap melting device with high efficiency, energy saving and high degree of automation.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: The technical solution of the present invention may be modified or equivalently substituted, but these modifications or equivalent substitutions cannot cause the modified technical solution to depart from the spirit and scope of the technical solution of the present invention.

Claims (4)

1. A rapid melting device for aluminum scrap recycled aluminum, characterized by: including an aluminum scrap melting unit, an aluminum scrap conveying unit and a fume treatment unit, the aluminum scrap melting unit including an aluminum liquid pump (1) and a vortex pool (6) , a pump pool (2) is provided below the aluminum liquid pump (1), a pump pool channel (3) is provided at the bottom of the pump pool (2), and the pump pool (2) and the furnace (13) pass through The pump pool channel (3) is connected, a connecting channel (4) is provided between the pump pool (2) and the vortex pool (6), and a vortex pool channel (5) is provided at the bottom of the vortex pool (6). ), the vortex pool (6) communicates with the furnace (13) through the vortex pool channel (5), and the aluminum chip transport unit and the oil fume treatment unit are provided above the vortex pool (6) ; The aluminum chip processing unit includes a conveyor (10), a feeding pipe (9) and a feeding pipe (8). The conveyor (10) and the feeding pipe (8) pass through the feeding pipe (8). 9)Connect; The oil fume treatment unit includes a blower (12), an air duct (11) and a smoke chamber (7). The blower (12) is connected to the feeding pipe (8) through the air duct (11), so The air duct (11) is sealedly connected to the feeding pipe (8), and the feeding pipe (8) is inserted into the flue gas chamber (7). The flue gas chamber (7) is located in the vortex Above the pool (6), the flue gas chamber (7) communicates with the vortex pool (6); The flue gas chamber (7) is connected with the furnace (13); The outlet of the feeding pipe (8) is located at the lower part of the flue gas chamber (7). 2. A rapid melting device for aluminum scrap recycled aluminum according to claim 1, characterized in that: the impeller of the aluminum liquid pump (1) is located at the lower part of the pump pool (2), and the connecting channel (4 ) is located on the side wall of the pump pool (2) where the impeller is located. 3. A rapid melting device for aluminum scrap recycled aluminum according to claim 2, characterized in that: the liquid outlet of the connecting channel (4) is located at the upper part of the vortex pool (6), and the liquid outlet Located on the tangent line of the horizontal section of the vortex pool (6). 4. A rapid melting device for aluminum scrap recycled aluminum according to claim 3, characterized in that: the pump pool channel (3) is located at the bottom of the furnace (13), and the pump pool channel (3) is The furnace (13) has a large trumpet-shaped end opening.