Aluminum skimming briquetting pretreatment device for smelting

Abstract

The utility model discloses an aluminum skimming briquetting pretreatment device for smelting, which comprises a hopper for placing cake-shaped aluminum blocks, a support and a material conveying assembly, and the hopper and the material conveying assembly are both mounted on the support; the conveying assembly comprises a vibration disc, a linear conveyor and a feeding steel pipe, the vibration disc is fixedly installed on the support and located below a discharging port of the hopper, the linear conveyor is installed on the support, the linear conveyor is used for linearly pushing the cake-shaped aluminum blocks into the feeding steel pipe, and the linear conveyor communicates with the feeding steel pipe; the discharging end of the feeding steel pipe communicates with a ceramic pipe, and the discharging end of the ceramic pipe communicates with an incinerator. In the preheating process of the aluminum block, the pressure generated by water vapor in the aluminum skimming block extrudes out unevaporated water in the aluminum block, so that the unevaporated water can be prevented from being mixed in the aluminum block for smelting, the burning loss of molten aluminum can be effectively reduced, the generation of oxidized slag inclusion can be effectively reduced, and the quality of the molten aluminum can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy casting, in particular to an aluminum chip briquetting pretreatment device for smelting. Background Art

[0002] In the aluminum alloy casting industry, the recycling of aluminum chips is an important factor affecting casting quality and cost. At present, there are two main ways to recycle aluminum chips. One is to add loose aluminum chips directly into the aluminum liquid. This method is to crush the aluminum chips and continuously put them into the rotary drying kiln for drying. The flue gas generated during drying is discharged after being burned in the incinerator. After drying, the dried aluminum chips are continuously added to the aluminum liquid for melting. This method requires more complex equipment, and the amount of energy consumed by using a rotary kiln to dry aluminum chips is large. Its advantage is that the aluminum chips can be fully dried, overcoming the influence of volatile gases on the quality of aluminum liquid. During the smelting process, the oxidation and burning loss of aluminum liquid is small. Another way is to compress the aluminum chips into cake-shaped blocks, and continuously put the blocks into the aluminum liquid. While melting, the moisture and oil in the blocks evaporate to produce flue gas, which is burned through the burner above the feeding chamber. This method has simple equipment and low energy consumption, but the volatile gas generated by the aluminum chips put into the aluminum liquid will come into contact with the aluminum liquid and then overflow into the aluminum liquid, which will cause a chemical reaction between the aluminum liquid and the water, resulting in a large amount of alloy burnout. At the same time, a large amount of oxidized slag will be generated, which increases the difficulty of aluminum liquid refining and affects the quality of aluminum liquid.

[0003] Therefore, we propose a pretreatment device for aluminum chip briquetting for smelting, which can reduce the burning loss of aluminum liquid and the generation of oxide slag during the smelting process of aluminum blocks. Utility Model Content

[0004] The utility model aims to provide a pretreatment device for aluminum chip briquetting for smelting to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pretreatment device for aluminum chip briquetting for smelting, comprising a hopper, a bracket and a feeding assembly for placing cake-shaped aluminum blocks, wherein the hopper and the feeding assembly are both mounted on the bracket;

[0006] The feeding assembly includes a vibrating plate, a linear feeder and a feeding steel pipe. The vibrating plate is fixedly mounted on the bracket and is located below the discharge port of the hopper. The linear feeder is mounted on the bracket and is used to push the pancake-shaped aluminum block into the feeding steel pipe in a straight line. The linear feeder is connected to the feeding steel pipe.

[0007] The discharge end of the feeding steel pipe is connected with a ceramic pipe, and the discharge end of the ceramic pipe is connected with an incinerator.

[0008] In one embodiment of the utility model, the linear feeder includes a cylinder, a push plate, a support platform and a limit plate, the telescopic end of the cylinder is fixedly connected to one side of the push plate, the cylinder is fixedly mounted on the bracket, the limit plate is fixedly connected to the support platform, and the support platform is located below the discharge port of the vibration plate.

[0009] In one embodiment of the utility model, the feeding steel pipe is connected with a liquid discharge nozzle, the liquid outlet end of the liquid discharge nozzle is connected with a waste liquid collection box, and the waste liquid collection box is used to collect water squeezed out of the aluminum block.

[0010] In one embodiment of the utility model, a burner is provided on the side of the incinerator, and the burner is located above the ceramic tube.

[0011] In an embodiment of the utility model, the feeding steel pipe is configured as a U-shaped steel pipe, and the liquid discharge nozzle is configured at the U-shaped bend of the feeding steel pipe.

[0012] In one embodiment of the utility model, it also includes a smoke removal mechanism, which includes a smoke hood, an exhaust fan, a booster pump and a water tank. The smoke hood is connected to the exhaust fan, and the air outlet end of the exhaust fan is connected to the booster pump. The booster pump is connected to the water tank through an air duct. The smoke hood is fixedly installed on the incinerator, and the smoke hood is located above the smoke exhaust port of the incinerator. A dust bag is fixedly installed on the air outlet pipe of the water tank.

[0013] In one embodiment of the utility model, an induction coil is sleeved on the outer wall of the ceramic tube, and the induction coil is used to heat the pancake-shaped aluminum block entering the ceramic tube.

[0014] In an embodiment of the utility model, the air outlet end of the air guide tube is inserted into the water surface of the water tank, and the length of the air guide tube inserted into the water is set to 0.5-1 cm.

[0015] In summary, due to the adoption of the above technology, the beneficial effects of the utility model are:

[0016] 1. Through the use of feeding components and the cooperation of vibration plate and linear feeder, the aluminum blocks output from the hopper are sent to the support table in sequence on the vibration plate, and the telescopic end of the cylinder drives the push plate to push the aluminum blocks on the support table into the feeding steel pipe in sequence. The aluminum blocks in the feeding steel pipe are guided into the ceramic tube by the thrust of the cylinder, and the aluminum blocks in the ceramic tube are preheated by the induction coil to raise the temperature of the aluminum blocks to 200-300℃, which can speed up the melting speed of the aluminum blocks in the incinerator. In the preheating process, the pressure generated by water vapor in the aluminum chips squeezes out the unevaporated water in the aluminum blocks, which can avoid the unevaporated water from mixing in the aluminum blocks for smelting, effectively reduce the burning loss of aluminum liquid, effectively reduce the generation of oxidized slag, and improve the quality of aluminum liquid after melting.

[0017] 2. The pressure generated by water vapor in the aluminum chip block squeezes out the unevaporated water in the aluminum block to form a liquid flow. The water gathers at the U-shaped bend of the feeding steel pipe to form a water seal to prevent the flue gas and water vapor from flowing back to the cylinder. When the water level is too high, it is introduced into the waste liquid collection box through the liquid discharge nozzle to prevent the waste liquid from flowing back to the ceramic tube and to centrally treat the waste liquid.

[0018] 3. By setting the burner above the ceramic tube, the induction coil continuously heats the aluminum block, and the flue gas is continuously generated. The flue gas entering the incinerator is ignited and burned. Since the flame of the burner is above the flue gas flow, it is fully mixed with the flue gas, so that the flue gas is fully burned, the combustion effect is enhanced, and the flue gas discharge is reduced.

[0019] 4. Through the use of smoke removal mechanism, during the incineration process, the exhaust fan works and the smoke hood generates suction to suck the smoke discharged from the smoke outlet of the incinerator into the water tank. The air duct sends the smoke into the water in the water tank, so that the smoke is washed by the water in the water tank and then discharged from the water tank. In the process of external discharge, it is filtered through the dust removal bag to further reduce the dust contained in the external exhaust air, reduce the harm to the environment, and reduce the dust content in the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main cross-section of the incinerator of the utility model;

[0021] Figure 2 This is a schematic diagram of a front cross-section of a water tank of the utility model;

[0022] Figure 3 It is a top view schematic diagram of the support platform of the utility model.

[0023] In the figure: 1. hopper; 2. bracket; 3. feeding assembly; 4. vibrating plate; 5. linear feeder; 6. feeding steel pipe; 7. ceramic tube; 8. incinerator; 9. cylinder; 10. push plate; 11. support table; 12. limit plate; 13. liquid discharge nozzle; 14. waste liquid collection box; 15. smoke removal mechanism; 16. smoke hood; 17. exhaust fan; 18. booster pump; 19. water tank; 20. dust bag; 21. induction coil; 22. air guide pipe; 23. burner; 24. aluminum block. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0025] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are 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 understood as a limitation on the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances of the specification.

[0027] Example 1

[0028] See also Figure 1-Figure 3The utility model provides a pretreatment device for aluminum chip briquetting for smelting, comprising a hopper 1 for placing cake-shaped aluminum blocks, a bracket 2 and a feeding assembly 3, wherein the hopper 1 and the feeding assembly 3 are both mounted on the bracket 2;

[0029] The feeding assembly 3 includes a vibration plate 4, a linear feeder 5 and a feeding steel pipe 6. The vibration plate 4 is fixedly mounted on the bracket 2, and the vibration plate 4 is located below the discharge port of the hopper 1. The linear feeder 5 is mounted on the bracket 2. The linear feeder 5 is used to push the pancake-shaped aluminum block into the feeding steel pipe 6 in a straight line. The linear feeder 5 is connected to the feeding steel pipe 6.

[0030] The linear feeder 5 includes a cylinder 9, a push plate 10, a support platform 11 and a limit plate 12, the telescopic end of the cylinder 9 is fixedly connected to one side of the push plate 10, the cylinder 9 is fixedly mounted on the bracket 2, the limit plate 12 is fixedly connected to the support platform 11, and the support platform 11 is located below the discharge port of the vibration plate 4;

[0031] The discharge end of the feeding steel pipe 6 is connected to a ceramic pipe 7, and the discharge end of the ceramic pipe 7 is connected to an incinerator 8;

[0032] An induction coil 21 is sleeved on the outer wall of the ceramic tube 7 , and the induction coil 21 is used to heat the pancake-shaped aluminum block entering the ceramic tube 7 .

[0033] By adopting the above scheme, through the use of the feeding component 3, through the use of the vibration plate 4 and the linear feeder 5, the aluminum blocks output by the hopper 1 are sequentially sent to the support platform 11 on the vibration plate 4, and the telescopic end of the cylinder 9 drives the push plate 10 to push the aluminum blocks on the support platform 11 into the feeding steel pipe 6 in sequence. The aluminum blocks in the feeding steel pipe 6 are guided into the ceramic tube 7 by the thrust of the cylinder 9, and the aluminum blocks in the ceramic tube 7 are preheated by the induction coil 21 to raise the temperature of the aluminum blocks to 200-300°C, which can accelerate the melting speed of the aluminum blocks in the incinerator 8, and in the preheating process, the pressure generated by the water vapor in the aluminum chips squeezes out the unevaporated water in the aluminum blocks, which can avoid the unevaporated water from being mixed in the aluminum blocks for smelting, which can effectively reduce the burn loss of aluminum liquid, can effectively reduce the generation of oxidized slag, and improve the quality of aluminum liquid after melting.

[0034] In this embodiment, the feeding steel pipe 6 is connected with a liquid discharge nozzle 13, and the liquid outlet end of the liquid discharge nozzle 13 is connected with a waste liquid collection box 14, and the waste liquid collection box 14 is used to collect the water squeezed out of the aluminum block;

[0035] The feeding steel pipe 6 is configured as a U-shaped steel pipe, and the liquid discharge nozzle 13 is configured at the U-shaped bend of the feeding steel pipe 6 .

[0036] By adopting the above scheme, the pressure generated by the water vapor in the aluminum chip block squeezes out the unevaporated water in the aluminum block to form a liquid flow. The water gathers at the U-shaped bend of the feeding steel pipe 6 to form a water seal to prevent the smoke and water vapor from flowing back to the position of the cylinder 9. When the water level is too high, it is introduced into the waste liquid collection box 14 through the liquid discharge nozzle 13 to prevent the waste liquid from flowing back to the ceramic tube 7.

[0037] In this embodiment, a burner 23 is provided on the side of the incinerator 8 , and the burner 23 is located above the ceramic tube 7 .

[0038] It should be noted that the burner 23 is used to provide heating flame to the incinerator 8 .

[0039] By adopting the above scheme, the burner 23 is arranged above the ceramic tube 7, the induction coil 21 continuously heats the aluminum block, and smoke is continuously generated. The smoke entering the incinerator 8 is ignited and burned. Since the flame of the burner 23 is above the smoke flow, it is fully counter-mixed with the smoke, so that the smoke is fully burned, the combustion effect is enhanced, and the smoke discharge is reduced.

[0040] In this embodiment, a smoke removal mechanism 15 is also included, and the smoke removal mechanism 15 includes a smoke hood 16, an exhaust fan 17, a booster pump 18 and a water tank 19. The smoke hood 16 is connected to the exhaust fan 17, and the air outlet end of the exhaust fan 17 is connected to the booster pump 18. The booster pump 18 is connected to the water tank 19 through an air guide pipe 22. The smoke hood 16 is fixedly installed on the incinerator 8, and the smoke hood 16 is located above the smoke exhaust port of the incinerator 8. A dust bag 20 is fixedly installed on the air outlet pipe of the water tank 19;

[0041] The air outlet end of the air guide tube 22 is inserted into the water surface of the water tank 19, and the length of the air guide tube 22 inserted into the water is set to 0.5-1 cm.

[0042] By adopting the above scheme, through the use of the smoke removal mechanism 15, during the incineration process, the exhaust fan 17 works, the smoke hood generates suction, and the smoke discharged from the smoke outlet of the incinerator 8 is sucked into the water tank 19, and the air duct 22 sends the smoke into the water in the water tank 19, so that the smoke is washed by the water in the water tank 19 and then discharged from the water tank 19. In the process of external discharge, the smoke is filtered through the dust removal bag to further reduce the dust contained in the external exhaust air, reduce the harm to the environment, and reduce the dust content in the working environment.

[0043] Working principle: Place the cake-shaped aluminum block into the hopper 1, discharge the material through the hopper 1 and enter the vibration plate 4, the vibration plate 4 sends the aluminum block to the support table 11 in sequence, the cylinder 9 drives the push plate 10 to place the material block in the radial direction of the material block to the waiting position on the support table 11, and push the aluminum block into the feeding steel pipe 6 in sequence with the cylinder 9 according to the set frequency; the aluminum block in the feeding steel pipe 6 is guided into the ceramic tube 7 by the thrust of the cylinder 9, and the aluminum block pushed into the ceramic tube 7 is preheated under the continuous operation of the induction coil 21, and the moisture and oil in the aluminum block are volatilized to form smoke and water vapor. Since the temperature of the aluminum block after preheating is 200-300℃, the pressure generated by the water vapor in the aluminum chip block squeezes out the unevaporated water in the aluminum block, forming a liquid flow that is introduced into the discharge nozzle 13 In the waste liquid collection box 14, due to the continuous heating of the induction coil 21, flue gas is continuously generated, and the flue gas entering the incinerator 8 is ignited and burned. Since the flame of the burner 23 is above the flue gas flow, it is fully counter-mixed with the flue gas. The flame size of the burner 23 is adjusted by the automatic control system to ensure that the temperature in the incinerator 8 is controlled above 800°C; the flue gas after incineration is discharged through the exhaust port of the incinerator 8. At this time, the exhaust fan 17 works, so that the flue gas hood 16 introduces the discharged flue gas into the water tank 19 through the booster pump 18. The gas that can dissolve in water in the smoke is retained in the water, and the dust particles are trapped in the water. Then, the flue gas discharged from the water tank 19 is processed by the dust removal bag 20 and discharged from the water tank 19, and the heated material blocks are sent to the aluminum molten vortex of the incinerator to complete the melting.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A pretreatment device for aluminum chips briquetting for smelting, comprising a hopper (1) for placing cake-shaped aluminum blocks, a bracket (2) and a feeding assembly (3), characterized in that: The hopper (1) and the feeding assembly (3) are both mounted on the bracket (2); The feeding assembly (3) comprises a vibrating plate (4), a linear feeder (5) and a feeding steel pipe (6); the vibrating plate (4) is fixedly mounted on the bracket (2), and the vibrating plate (4) is located below the discharge port of the hopper (1); the linear feeder (5) is mounted on the bracket (2), and the linear feeder (5) is used to push the pancake-shaped aluminum block into the feeding steel pipe (6) in a linear manner; the linear feeder (5) is connected to the feeding steel pipe (6); The discharge end of the feeding steel pipe (6) is connected to a ceramic pipe (7), and the discharge end of the ceramic pipe (7) is connected to an incinerator (8).

2. The aluminum chip briquetting pretreatment device for smelting according to claim 1 is characterized in that: The linear feeder (5) comprises a cylinder (9), a push plate (10), a support platform (11) and a limit plate (12); the telescopic end of the cylinder (9) is fixedly connected to one side of the push plate (10); the cylinder (9) is fixedly mounted on the bracket (2); the limit plate (12) is fixedly connected to the support platform (11); and the support platform (11) is located below the discharge port of the vibration plate (4).

3. The aluminum chip briquetting pretreatment device for smelting according to claim 1 is characterized in that: The feeding steel pipe (6) is connected to a liquid discharge nozzle (13), and the liquid outlet end of the liquid discharge nozzle (13) is connected to a waste liquid collection box (14), and the waste liquid collection box (14) is used to collect water squeezed out of the aluminum block.

4. The aluminum chip briquetting pretreatment device for smelting according to claim 1 is characterized in that: A burner (23) is provided on the side of the incinerator (8), and the burner (23) is located above the ceramic tube (7).

5. The aluminum chip briquetting pretreatment device for smelting according to claim 3 is characterized in that: The feeding steel pipe (6) is configured as a U-shaped steel pipe, and the liquid discharge nozzle (13) is configured at the U-shaped bend of the feeding steel pipe (6).

6. The aluminum chip briquetting pretreatment device for smelting according to claim 1 is characterized in that: The invention also comprises a smoke removal mechanism (15), the smoke removal mechanism (15) comprising a smoke hood (16), an exhaust fan (17), a booster pump (18) and a water tank (19), the smoke hood (16) being connected to the exhaust fan (17), the air outlet end of the exhaust fan (17) being connected to the booster pump (18), the booster pump (18) being connected to the water tank (19) via an air guide pipe (22), the smoke hood (16) being fixedly mounted on the incinerator (8), and the smoke hood (16) being located above the smoke outlet of the incinerator (8), and a dust removal bag (20) being fixedly mounted on the air outlet pipe of the water tank (19).

7. The aluminum chip briquetting pretreatment device for smelting according to claim 1 is characterized by: An induction coil (21) is sleeved on the outer wall of the ceramic tube (7), and the induction coil (21) is used to heat the pancake-shaped aluminum block that enters the ceramic tube (7).

8. The aluminum chip briquetting pretreatment device for smelting according to claim 6, characterized in that: The air outlet end of the air guide tube (22) is inserted into the water surface of the water tank (19), and the length of the air guide tube (22) inserted into the water is set to 0.5-1 cm.

Images