Aluminum smelting furnace aluminum ingot preheating material channel based on flue gas waste heat

Abstract

The utility model discloses an aluminum smelting furnace aluminum ingot preheating material channel based on flue gas waste heat. The aluminum smelting furnace aluminum ingot preheating material channel comprises an aluminum smelting furnace body and a preheating cylinder. By the adoption of the air outlet piece, the driving shaft, the smashing blades and the air outlet rod, aluminum ingots can be smashed into a plurality of small aluminum particles through the smashing blades rotating at a high speed after falling into the preheating cylinder, the overall contact area between the aluminum ingots and high-temperature smoke is enlarged, preheating can be better conducted, and when the aluminum particles are preheated, the aluminum ingots can be evenly smashed into small blocks through the smashing blades. Aluminum particles can be stirred through rotation of the driving shaft, then the aluminum particles at different positions can be exposed, the overall contact area is enlarged, the heating effect is improved, during preheating, air can be discharged from outside to inside through the air outlet piece, air can be discharged from inside to outside through the driving shaft and the air outlet rod, and the heating effect is improved. And multiple groups of structures are matched for use, so that all-directional, sufficient and uniform preheating treatment can be carried out on aluminum particles, and the aluminum particle preheating device has the advantages of preheating crushing, wide preheating range and good preheating effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial production technical field, concretely relates to aluminium smelting furnace preheating aluminium ingot material channel based on flue gas waste heat. BACKGROUND

[0002] With the increasing shortage and tension of energy and the high requirement of people to environmental protection, how to realize high efficiency, energy saving and environmental protection in the heat treatment industry becomes the focus of today's society, and to the aluminium liquid continuous melting furnace, a large amount of hot gas is generated in the melting process, and the direct discharge of hot gas into the air will cause heat waste, so the aluminium ingot material is generally preheated by the hot gas generated in the melting process before smelting, and the melting time is shortened.

[0003] In the prior art, the application number is: CN202111154975.6 an aluminium liquid continuous melting furnace, the melting furnace rotates when pouring the material melted in the inside, the air supply pipe and the feeding pipe arranged on the melting furnace are slidingly sealed in the first sliding groove opened in the arc-shaped plate, to prevent heat loss, when the feeding pipe on the melting furnace moves, the arc-shaped baffle moves under the action of the spring, so that the end of the material preheating pipe and the hot gas conveying pipe in the preheating feeding system is sealed, that is, the hot gas channel between the melting furnace and the preheating feeding system is sealed, to prevent a large amount of heat loss when pouring the material.

[0004] However, the above-mentioned patent still has some disadvantages in use: the aluminium ingot is conveyed by the conveying belt, at this time the position of the aluminium ingot in contact with the conveying belt cannot be well contacted with the flue gas heat, thereby limiting the preheating area of the aluminium ingot, making the preheating not uniform enough, limiting the overall preheating effect, and the aluminium ingot has a large volume, only the exposed surface can well accept heat during preheating, and the internal heat cannot be well absorbed, resulting in waste of heat and prolonging the preheating time, and the large volume is not conducive to subsequent rapid melting, affecting the production efficiency of the aluminium smelting furnace, and the overall use effect is not very ideal.

[0005] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENT

[0006] (I) Technical problem solved

[0007] In view of the deficiencies of the prior art, the utility model provides an aluminium smelting furnace preheating aluminium ingot material channel based on flue gas waste heat, which has the advantages of preheating crushing, wide preheating range and good preheating effect, thereby solving the problems in the above background technology.

[0008] (II) Technical scheme

[0009] To achieve the advantages of preheating and pulverizing, wide preheating range, and good preheating effect mentioned above, the specific technical solution adopted by this utility model is as follows:

[0010] The aluminum ingot preheating channel of the aluminum furnace based on flue gas waste heat includes an aluminum furnace body and a preheating cylinder. The preheating cylinder is fixedly installed on one side of the top of the aluminum furnace body. A screening disc is installed in the middle of the preheating cylinder. A drive shaft is installed through the middle of the screening disc. The top of the drive shaft is rotatably connected to the flue gas main pipe through one side of the preheating cylinder. Several sets of crushing blades are evenly installed around the surface of the drive shaft above the screening disc. Several sets of connecting plates are evenly installed around the surface of the drive shaft below the screening disc. Several sets of air outlet rods are evenly installed on the top of the connecting plates. Several sets of air outlet plates are evenly installed around the outer side of the air outlet rods at the bottom surface of the preheating cylinder. Several sets of air outlet holes are opened on the surface of the air outlet plates, the surface of the air outlet rods, and the bottom surface of the drive shaft.

[0011] Furthermore, one end of the flue gas main pipe is rotatably connected to the top of the drive shaft, and the other end of the flue gas main pipe is connected to the flue gas outlet on the surface of the aluminum furnace body.

[0012] Furthermore, several sets of flue gas branch pipes are evenly installed on one side surface of the main flue gas pipe, and one end of each flue gas branch pipe is connected to the exhaust plate.

[0013] Furthermore, a transmission gear is fixedly installed on the surface of the drive shaft at the top position of the preheating cylinder, and a drive gear is meshed with one side of the transmission gear. The drive gear is connected to the output end of the motor, and the motor is located at the top position of the preheating cylinder.

[0014] Furthermore, a feeding box is installed at an angle on the top of one side surface of the preheating cylinder. The feeding box has an inclined slot inside. A sealing plate is rotatably connected to the feeding box at the contact position with the surface of the preheating cylinder. Torsion springs are connected to both ends of the sealing plate.

[0015] Furthermore, a sealing plate is slidably connected to the bottom of the preheating cylinder, and one end of the sealing plate is connected to the outer surface of the preheating cylinder via a cylinder.

[0016] Furthermore, an exhaust pipe is provided on one side of the top of the preheating cylinder, and the exhaust pipe is connected to an external flue gas purification device.

[0017] Furthermore, the feeding box is provided with a feeding port at the contact position with the surface of the preheating cylinder.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this utility model provides a preheating aluminum ingot feed channel for an aluminum furnace based on flue gas waste heat, which has the following characteristics:

[0020] Beneficial effects:

[0021] This invention employs an exhaust plate, a drive shaft, crushing blades, and an exhaust rod. After the aluminum ingot falls into the preheating cylinder, it is first crushed into several small aluminum particles by the high-speed rotating crushing blades, thereby increasing the overall contact area with the high-temperature flue gas and facilitating better preheating. Furthermore, during the preheating process, the rotation of the drive shaft agitates the aluminum particles, exposing them at different locations and further expanding the overall contact area to improve heating efficiency. During preheating, the exhaust plate allows air to escape from the outside to the inside, while the drive shaft and exhaust rod allow air to escape from the inside to the outside. The combined use of these multiple structures enables comprehensive, thorough, and uniform preheating of the aluminum particles. The crushing of the aluminum ingot into particles increases the overall contact area with the hot gas, thus achieving better preheating and improving overall preheating quality. This invention offers advantages such as preheating and crushing, a wide preheating range, and excellent preheating effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the aluminum ingot preheating channel of the aluminum furnace based on waste heat of flue gas proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the preheating cylinder of this utility model;

[0025] Figure 3 This is a schematic diagram showing the connection between the flue gas branch pipe and the gas outlet plate of this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the screening disc of this utility model.

[0027] In the picture:

[0028] 1. Aluminum furnace body; 2. Sealing plate; 3. Main flue gas pipe; 4. Branch flue gas pipe; 5. Gas outlet; 6. Screening plate; 7. Crushing blade; 8. Feed inlet; 9. Preheating cylinder; 10. Drive shaft; 11. Transmission gear; 12. Drive gear; 13. Motor; 14. Sealing plate; 15. Feed box; 16. Gas outlet plate; 17. Gas outlet rod; 18. Connecting plate; 19. Cylinder. Detailed Implementation

[0029] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0030] According to an embodiment of the present invention, a preheating aluminum ingot feed channel for an aluminum furnace based on waste heat from flue gas is provided.

[0031] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-4 As shown, the aluminum ingot preheating channel of the aluminum furnace based on waste heat of flue gas according to the embodiment of this utility model includes an aluminum furnace body 1 and a preheating cylinder 9. The preheating cylinder 9 is fixedly installed on one side of the top of the aluminum furnace body 1. A screening plate 6 is installed in the middle of the preheating cylinder 9. A drive shaft 10 is installed through the middle of the screening plate 6. The top of the drive shaft 10 is rotatably connected to the flue gas main pipe 3 through one side of the preheating cylinder 9. Several sets of crushing blades 7 are evenly installed around the surface of the drive shaft 10 above the screening plate 6. Several sets of connecting plates 18 are evenly installed around the surface of the drive shaft 10 below the screening plate 6. Several sets of air outlet rods 17 are evenly installed on the top of the connecting plates 18. Several sets of air outlet plates 16 are evenly installed around the outer side of the air outlet rods 17 inside the bottom surface of the preheating cylinder 9. Several sets of air outlet holes 5 are opened on the surface of the air outlet plates 16, the surface of the air outlet rods 17, and the bottom surface of the drive shaft 10.

[0032] In one embodiment, one end of the flue gas main pipe 3 is rotatably connected to the top of the drive shaft 10, and the other end of the flue gas main pipe 3 is connected to the flue gas outlet on the surface of the aluminum furnace body 1.

[0033] In one embodiment, several sets of flue gas branch pipes 4 are evenly installed on one side surface of the flue gas main pipe 3. One end of the flue gas branch pipe 4 is connected to the gas outlet plate 16. The flue gas main pipe 3 and the flue gas branch pipes 4 are wrapped with heat insulation cotton to improve the heat insulation effect of the pipe, avoid a large amount of heat loss, and improve the subsequent utilization of flue gas heat.

[0034] In one embodiment, a transmission gear 11 is fixedly installed on the surface of the drive shaft 10 at the top position of the preheating cylinder 9. A drive gear 12 is meshed with one side of the transmission gear 11. The drive gear 12 is connected to the output end of the motor 13. The motor 13 is located at the top position of the preheating cylinder 9. The drive gear 12 and the transmission gear 11 are common gear structures. By meshing with each other, the motor 13 can drive the drive shaft 10, which facilitates the crushing of aluminum ingots and the stirring of preheated aluminum particles, expands the heating area, and improves the overall preheating effect.

[0035] In one embodiment, a feeding box 15 is installed at an angle on the top of one side surface of the preheating cylinder 9. The feeding box 15 has an inclined slot inside. A sealing plate 14 is rotatably connected to the feeding box 15 at the contact position with the surface of the preheating cylinder 9. Torsion springs are connected to both ends of the sealing plate 14. The torsion springs are a common structure, mainly used to return the sealing plate 14 to its original position through its own deformation after rotation, so as to avoid a large amount of heat leakage.

[0036] In one embodiment, a sealing plate 2 is slidably connected to the bottom of the preheating cylinder 9. One end of the sealing plate 2 is connected to the outer surface of the preheating cylinder 9 via a cylinder 19. The sealing plate 2 is set to seal the bottom of the preheating cylinder 9. The sealing plate 2 is operated by the operation of the cylinder 19, which can realize the addition of preheated aluminum ingots, facilitating the subsequent smelting of aluminum in the aluminum furnace.

[0037] In one embodiment, an exhaust pipe is provided on one side of the top of the preheating cylinder 9, and the exhaust pipe is connected to an external flue gas purification device. The flue gas purification device is a common device in the purification field, and will not be described in detail here. The exhaust pipe is set up to smoothly discharge the flue gas after use, and to avoid the continuous introduction of internal flue gas without exhaust, which would cause excessive air pressure and thus affect the smooth introduction of flue gas.

[0038] In one embodiment, the feed box 15 is provided with a feed inlet 8 at the contact position with the surface of the preheating cylinder 9. The feed inlet 8 facilitates the addition of aluminum ingots and the installation and use of the sealing plate 14.

[0039] Working principle: In actual use, the preheating cylinder 9 can be installed at a designated position on the top of the aluminum furnace body 1 to facilitate the subsequent addition of aluminum ingots after preheating, thus facilitating subsequent smelting operations. Then, the preheating cylinder 9 can be connected to the flue gas outlet via the main flue gas pipe 3 and the branch flue gas pipe 4, allowing high-temperature flue gas to be smoothly introduced into the preheating cylinder 9 to preheat the aluminum ingots. Next, the aluminum ingots can be placed into the feeding box 15. Due to the inclined structure of the feeding box 15, the aluminum ingots inside can slide along the feeding box 15. When they slide to contact the preheating cylinder 9... After the aluminum ingot touches the preheating cylinder 9, the moving ingot pushes the sealing plate 14, causing it to rotate. The ingot then falls onto the screening disc 6 inside the preheating cylinder 9. Because the sealing plate 14 has torsion springs at both ends, the torsion springs quickly reset the plate after the ingot has moved past, reducing the opening time and preventing heat loss. Furthermore, the large gap between the opening of the feeding box 15 and the preheating cylinder 9 ensures that any small amount of heat loss will not cause burns, guaranteeing the safety of feeding. The aluminum ingot then enters the preheating cylinder 9 and is crushed by the high-speed rotating disc. The blade 7 cuts and crushes the large aluminum ingots into several groups of smaller aluminum particles. These particles then fall through the holes on the surface of the screening disc 6. At this point, high-temperature fumes emitted from the vents 5 on the drive shaft 10, the vent plate 16, and the vent rod 17 preheat the aluminum particles. Because the drive shaft 10 is continuously rotating, the hot air emitted from its vents 5 can fully contact the aluminum particles at different locations. Furthermore, the hot air emitted from the vent plate 16 flows from the outside in, while the hot air emitted from the drive shaft 10 and the vent rod 17... Since the gas flows from the inside out, multiple structures working together can preheat aluminum particles in a comprehensive, thorough, and uniform manner. Furthermore, the aluminum ingots are crushed into particles, increasing the overall contact area with the hot gas, thus achieving better preheating and improving the overall preheating quality. Smaller aluminum particles are also more convenient for subsequent smelting operations in the aluminum furnace compared to larger aluminum ingots, enhancing the overall performance. After the aluminum particles are preheated, the cylinder 19 pushes the sealing plate 2 outward, allowing the aluminum particles to fall into the aluminum furnace for use. The device as a whole has the advantages of preheating and crushing, a wide preheating range, and good preheating effect.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aluminum ingot preheating channel for an aluminum furnace based on waste heat from flue gas, comprising an aluminum furnace body (1) and a preheating cylinder (9), characterized in that, A preheating cylinder (9) is fixedly installed on one side of the top of the aluminum furnace body (1). A screening disc (6) is installed in the middle of the preheating cylinder (9). A drive shaft (10) is installed through the middle of the screening disc (6). The top of the drive shaft (10) is rotatably connected to the flue gas main pipe (3) through one side of the preheating cylinder (9). Several sets of crushing blades (7) are evenly installed around the surface of the drive shaft (10) above the screening disc (6). Several sets of connecting plates (18) are evenly installed around the surface of the drive shaft (10) below the screening disc (6). Several sets of air outlet rods (17) are evenly installed on the top of the connecting plates (18). Several sets of air outlet plates (16) are evenly installed around the outer side of the air outlet rods (17) at the bottom surface of the preheating cylinder (9). Several sets of air outlet holes (5) are opened on the surface of the air outlet plates (16), the surface of the air outlet rods (17), and the bottom surface of the drive shaft (10).

2. The aluminum ingot preheating channel for an aluminum furnace based on waste heat from flue gas as described in claim 1, characterized in that, One end of the flue gas main pipe (3) is rotatably connected to the top of the drive shaft (10), and the other end of the flue gas main pipe (3) is connected to the smoke outlet on the surface of the aluminum furnace body (1).

3. The aluminum ingot preheating channel for an aluminum furnace based on waste heat from flue gas as described in claim 1, characterized in that, Several sets of flue gas branch pipes (4) are evenly installed on one side surface of the flue gas main pipe (3), and one end of the flue gas branch pipe (4) is connected to the gas outlet plate (16).

4. The aluminum ingot preheating channel of the aluminum furnace based on flue gas waste heat according to claim 1, characterized in that, A transmission gear (11) is fixedly installed on the surface of the drive shaft (10) at the top position of the preheating cylinder (9). A drive gear (12) is meshed with one side of the transmission gear (11). The drive gear (12) is connected to the output end of the motor (13). The motor (13) is located at the top position of the preheating cylinder (9).

5. The aluminum ingot preheating channel for an aluminum furnace based on waste heat from flue gas according to claim 1, characterized in that, A feeding box (15) is installed at an incline on the top of one side surface of the preheating cylinder (9). The feeding box (15) has an inclined slot inside. A sealing plate (14) is rotatably connected to the feeding box (15) at the contact position with the surface of the preheating cylinder (9). Torsion springs are connected to both ends of the sealing plate (14).

6. The aluminum ingot preheating channel for an aluminum furnace based on waste heat from flue gas according to claim 1, characterized in that, A sealing plate (2) is slidably connected to the bottom of the preheating cylinder (9), and one end of the sealing plate (2) is connected to the outer surface of the preheating cylinder (9) through a cylinder (19).

7. The aluminum ingot preheating channel for an aluminum furnace based on flue gas waste heat according to claim 1, characterized in that, The preheating cylinder (9) is provided with an exhaust pipe on one side of its top, and the exhaust pipe is connected to an external flue gas purification device.

8. The aluminum ingot preheating channel for an aluminum furnace based on flue gas waste heat according to claim 5, characterized in that, The feed box (15) is provided with a feed inlet (8) at the contact position between the surface of the feed box (15) and the preheating cylinder (9).

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