Degassing device for secondary aluminum production

Abstract

The utility model relates to the technical field of degassing in aluminum production, in particular to a degassing device for secondary aluminum production, which comprises a support, a degassing furnace is fixed at the top of the support, a top cover is fixed at the open end of the degassing furnace, a stirring component is arranged in the degassing furnace and comprises a stirring pipe rotationally connected with the degassing furnace, and the top cover is fixed at the open end of the degassing furnace. A plurality of stirring plates are annularly and fixedly communicated with the outer side of the stirring pipe at equal angles, and an air inlet pipe is rotationally communicated with the top of the stirring pipe. According to the degassing furnace, the stirring pipe drives the stirring plate to continuously stir molten aluminum, the efficiency of separating out gas in the molten aluminum is improved, meanwhile, the motor drives the multiple fan blades in the exhaust pipe to rotate, the exhaust pipe continuously sucks air in the degassing furnace, the separated-out gas is rapidly and thoroughly exhausted, and the degassing efficiency is improved. And the stirring pipe is matched with the stirring plate for blowing and degassing and the exhaust pipe for vacuumizing and degassing are mutually combined and simultaneously carried out, so that the degassing efficiency in the secondary aluminum production process is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminum production degassing technical field, specifically is a kind of degassing device for secondary aluminium production. BACKGROUND

[0002] In the process of producing aluminum ingot or aluminum material by remelting with aluminum scrap as raw material, the solubility of gas (such as hydrogen, oxygen, etc.) in aluminum melt is high, and the solubility decreases sharply when solidifying, which can form pores in the ingot or casting, affecting the quality of the product. The gas in the aluminum melt is removed by blowing gas degassing method, vacuum degassing method and other degassing methods. The blowing gas degassing method is to introduce inert gas or active gas into the melt, so that the gas in the melt is replaced. The vacuum degassing method is to extract air from the aluminum melt furnace to make the aluminum melt in a vacuum environment.

[0003] During the implementation of the blowing gas degassing method, the inert gas is not easy to fully contact with the gas and substances in the solution in the furnace, which affects the effect of the inert gas on removing the gas in the aluminum liquid. During the implementation of the vacuum degassing method, the gas bubbles are extracted from the aluminum melt and float to the surface by extracting air. With the continuous extraction of air, the gas bubbles break, but the process of floating and breaking is relatively slow, resulting in low gas emission efficiency. Moreover, most degassing devices are not easy to combine the blowing gas degassing method and the vacuum degassing method to further improve the degassing efficiency. SUMMARY

[0004] The purpose of the utility model is to provide a degassing device for secondary aluminium production to solve the problems raised in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A degassing device for secondary aluminium production, comprising:

[0007] a support;

[0008] a degassing furnace fixed in the middle of the support, the open end of the degassing furnace is fixed with a top cover;

[0009] a stirring assembly arranged inside the degassing furnace, the stirring assembly comprises a stirring pipe rotationally connected with the degassing furnace, and a plurality of stirring plates are fixed on the outer side of the stirring pipe in a ring shape and at equal angles;

[0010] an air inlet pipe rotationally connected at the top of the stirring pipe, capable of injecting inert gas into the interior of the degassing furnace through the air inlet pipe;

[0011] an air extraction pipe fixed at the top of the top cover, a connecting shaft is rotationally connected inside the air extraction pipe, and a plurality of fan blades are fixed at equal intervals on the outer side of the connecting shaft;

[0012] A driving assembly is arranged between the air inlet pipe and the air exhaust pipe, and the driving assembly comprises an L-shaped beam fixedly connected with the top cover, and one end of the L-shaped beam is fixed with a motor capable of driving the stirring pipe and the connecting shaft to rotate simultaneously.

[0013] Further, the air exhaust furnace is externally communicated with a feeding pipe, and a hopper one is fixedly communicated with the top of the feeding pipe.

[0014] Further, the bottom of the air exhaust furnace is externally communicated with a discharging pipe, and a valve is fixedly arranged on the outside of the discharging pipe.

[0015] Further, the inside of the stirring plate is provided with a connecting hole communicated with the stirring pipe, and a plurality of air exhaust pipes are fixedly arranged on the outside of the stirring plate at equal intervals and communicated with the connecting hole.

[0016] Further, a plurality of insertion pins are fixedly arranged on the bottom surface of the top cover, and a hopper two is fixedly communicated between the air exhaust pipe and the top cover.

[0017] Further, the motor is fixed on the top of the L-shaped beam, the output end of the motor is fixed with a gear one, and the output end of the motor is fixedly connected with the connecting shaft.

[0018] Further, the gear one is externally meshed with a gear two, and the gear two is fixedly sleeved on the outside of the stirring pipe.

[0019] Compared with the prior art, the air exhaust furnace has the advantages that:

[0020] 1. The stirring pipe is rotatably arranged in the air exhaust furnace, a plurality of stirring plates are fixed on the outside of the stirring pipe, the top of the stirring pipe is rotatably communicated with an air inlet pipe, and external inert gas or active gas is pumped to the air exhaust pipe position of the plurality of stirring plates through the air inlet pipe. When the stirring pipe rotates with the plurality of stirring plates in the aluminum melt, the inert gas or active gas can be fully contacted with the gas and substances at different positions in the furnace, so that the gas in the aluminum melt can be quickly separated and analyzed, and the efficiency of removing the gas in the aluminum liquid is improved.

[0021] 2. The air exhaust pipe is fixedly communicated with the top of the air exhaust furnace, the motor drives a plurality of fan blades in the air exhaust pipe to rotate, the air exhaust pipe exhausts the air in the air exhaust furnace, the gas separated from the aluminum liquid in the air exhaust furnace can be quickly transported out, the motor drives the stirring pipe to rotate through the mutual meshing of the gear one and the gear two when driving the air exhaust pipe to exhaust the air, the stirring pipe with the plurality of stirring plates stirs the aluminum liquid, accelerates the gas to be separated and exhausted by the air exhaust pipe, and the blowing and air exhausting method is combined with the vacuum air exhausting method to be simultaneously performed, and the efficiency of the air exhausting of the regenerated aluminum production is further improved.

[0022] 3. The plurality of pins are fixed uniformly on the bottom surface of the top cover, in the process that the bubbles are floated to the liquid surface from the aluminum melt, the bubbles are poked by the pins to be broken, and the plurality of pins facilitate the bubbles floated from different positions of the liquid surface to be broken quickly, so that the degassing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the overall structure schematic diagram of the utility model;

[0024] Figure 2 is the internal structure schematic diagram of the degassing furnace in the utility model;

[0025] Figure 3 is the top cover, the structure schematic diagram of the exhaust pipe in the utility model;

[0026] Figure 4 is the structure schematic diagram of the driving assembly in the utility model;

[0027] Figure 5 is the structure schematic diagram of the stirring assembly in the utility model.

[0028] In the drawing: 100, support;110, support ring;120, support column;200, degassing furnace;210, top cover;211, pin;220, feed pipe;221, hopper one;230, discharge pipe;300, stirring assembly;310, stirring pipe;320, stirring plate;330, exhaust pipe;321, connecting hole;400, air inlet pipe;410, electromagnetic valve;420, support;500, exhaust pipe;510, connecting shaft;511, fan blade;520, hopper two;600, driving assembly;610, L-shaped beam;620, motor;630, gear one;640, gear two. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Embodiment one, please refer to Figure 1 - Figure 5The utility model discloses an embodiment of a kind of degassing device for secondary aluminium production, including support 100, support 100 top is fixed with degassing furnace 200, the open end of degassing furnace 200 is fixed with top cover 210, the inside of degassing furnace 200 is provided with stirring assembly 300, stirring assembly 300 includes the stirring pipe 310 of rotation connection with degassing furnace 200, the outside of stirring pipe 310 is annular isometrically communicated and is fixed with multiple stirring plates 320, the top rotation of stirring pipe 310 is communicated with gas inlet pipe 400, gas inlet pipe 400 can be injected inert gas to the inside of degassing furnace 200 by gas inlet pipe 400, top cover 210 top surface is communicated and is fixed with suction pipe 500, suction pipe 500 inside rotation is connected with connecting shaft 510, multiple fan blades 511 are fixed with at equal intervals on the outside of connecting shaft 510, drive assembly 600 is arranged between gas inlet pipe 400 and suction pipe 500, drive assembly 600 includes the L-shaped beam 610 of fixed connection with top cover 210, one end of L-shaped beam 610 is fixed with motor 620 that can drive stirring pipe 310 and connecting shaft 510 simultaneously rotate.

[0031] Specifically, by rotatingly connecting stirring pipe 310 in degassing furnace 200, external inert gas or active gas can be injected into aluminum liquid in all directions through stirring plate 320 on the outside of stirring pipe 310, so that the gas and substances in aluminum liquid can be contacted and fused with inert gas or active gas components, and with stirring pipe 310 continuously stirring aluminum liquid with stirring plate 320, the efficiency of gas precipitation in aluminum liquid can be improved, and at the same time, motor 620 drives multiple fan blades 511 inside suction pipe 500 to rotate, so that suction pipe 500 continuously sucks air in degassing furnace 200, realizes quickly pumping out the precipitated gas, and through the combination of blowing degassing by stirring pipe 310 with stirring plate 320 and vacuum degassing by suction pipe 500, the efficiency of degassing in secondary aluminium production process can be further improved.

[0032] As shown in Figure 1 In the embodiment, support 100 includes support ring 110 fixed with degassing furnace 200, and multiple support columns 120 are fixed on the bottom surface of support ring 110 in annular isometrically, so that degassing furnace 200 can be supported and fixed on the ground.

[0033] As shown in Figure 1 and Figure 2As shown, in this embodiment, a feeding pipe 220 is fixedly communicated outside the degassing furnace 200, and a hopper 221 is fixedly communicated at the top of the feeding pipe 220, and a sealing cover is detachably fixed at the top of the hopper 221. When it is needed to inject the aluminum melt into the degassing furnace 200, the sealing cover is opened, the pipe conveying the aluminum melt is directed to the hopper 221, the aluminum melt in the hopper 221 is conveyed into the degassing furnace 200 through the feeding pipe 220, and finally the sealing cover on the hopper 221 is closed to keep the degassing furnace 200 in a relatively sealed environment, facilitating subsequent vacuum degassing.

[0034] As shown, Figure 1 In this embodiment, a discharging pipe 230 is fixedly communicated at the bottom of the degassing furnace 200, and a valve is fixedly installed outside the discharging pipe 230. After degassing is completed, the user can open the valve on the discharging pipe 230 to facilitate discharging the aluminum melt in the degassing furnace 200.

[0035] As shown, Figure 5 In this embodiment, a connecting hole 321 is formed in the interior of the stirring plate 320 and communicated with the stirring pipe 310, and a plurality of gas outlet pipes 330 are fixedly communicated with the connecting hole 321 at equal intervals outside the stirring plate 320, so that the inert gas entering the interior of the stirring pipe 310 can be dispersedly conveyed into the different gas outlet pipes 330 through the plurality of connecting holes 321, and then dispersedly conveyed into the aluminum melt in different directions through the gas outlet pipes 330 for degassing.

[0036] As shown, Figure 1 and Figure 2 In this embodiment, an electromagnetic valve 410 is fixedly installed outside the gas inlet pipe 400, which can be closed in the later stage of degassing to make the air suction pipe 500 continuously suck air, so as to create a negative pressure environment for the degassing furnace 200 and improve the effect of vacuum degassing. A support 420 is fixed between the gas inlet pipe 400 and the L-shaped beam 610, so that the gas inlet pipe 400 does not rotate synchronously during the rotation of the stirring pipe 310.

[0037] As shown, Figure 2 and Figure 3 In this embodiment, a plurality of insertion pins 211 are uniformly fixed on the bottom surface of the top cover 210, which facilitates breaking the bubbles floating on the surface of the aluminum liquid. A hopper 520 is fixedly communicated between the air suction pipe 500 and the top cover 210, so that the air suction pipe 500 can suck a large amount of gas in the furnace.

[0038] As shown, Figure 1 , Figure 2 and Figure 4As shown, in the embodiment, the motor 620 is fixed on the top of the L-shaped beam 610, the output end of the motor 620 is fixed with a gear one 630, the output end of the motor 620 is fixedly connected with the connecting shaft 510, the outside of the gear one 630 is engaged with a gear two 640, and the gear two 640 is sleeved and fixed on the outside of the stirring pipe 310.

[0039] In the embodiment, the motor 620 rotates with the connecting shaft 510 to make the suction pipe 500 work, at the same time, the gear one 630 of the output end of the motor 620 rotates with the gear two 640, the gear two 640 rotates with the stirring pipe 310, the stirring pipe 310 is rotatably inserted with the L-shaped beam 610, the stirring pipe 310 rotates with the stirring plate 320 to stir the aluminum melt, so as to accelerate the gas in the aluminum melt, the diameter of the gear one 630 is smaller than that of the gear two 640, so as to make the fan blade 511 on the connecting shaft 510 rotate quickly to suck the gas, and the stirring pipe 310 does not rotate too fast in the process.

[0040] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

[0041] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A degassing device for secondary aluminum production, characterized by, The utility model relates to a kind of inert gas removal device, including: Support (100); Gas removal furnace (200), fixed in the middle part of support (100), the open end of gas removal furnace (200) is fixed with top cover (210); Stirring assembly (300) is arranged inside gas removal furnace (200), and stirring assembly (300) includes stirring pipe (310) rotationally connected with gas removal furnace (200), and multiple stirring plates (320) are fixed with the outside of stirring pipe (310) in ring shape equiangular communication; Gas inlet pipe (400) is rotationally communicated in the top of stirring pipe (310), and inert gas can be injected into the inside of gas removal furnace (200) by gas inlet pipe (400); Exhaust pipe (500) is fixedly communicated in the top of top cover (210), and connecting shaft (510) is rotationally connected in the inside of exhaust pipe (500), and multiple fan leaves (511) are fixed with the outside of connecting shaft (510) at equal intervals; Drive assembly (600) is arranged between gas inlet pipe (400) and exhaust pipe (500), and drive assembly (600) includes L-shaped beam (610) fixedly connected with top cover (210), and one end of L-shaped beam (610) is fixed with motor (620) capable of driving stirring pipe (310) and connecting shaft (510) to rotate simultaneously.

2. The apparatus according to claim 1, wherein Gas removal furnace (200) is fixedly communicated with feeding pipe (220) outside, and feeding pipe (220) is fixedly communicated with hopper one (221) in the top.

3. The apparatus according to claim 1, wherein The bottom of gas removal furnace (200) is fixedly communicated with discharge pipe (230), and valve is fixedly installed on the outside of discharge pipe (230).

4. The apparatus according to claim 1, wherein The inside of stirring plate (320) is provided with connecting hole (321) communicated with stirring pipe (310), and multiple gas outlet pipes (330) communicated with connecting hole (321) are fixed at equal intervals on the outside of stirring plate (320).

5. The apparatus according to claim 1, wherein Multiple insertion pins (211) are fixed uniformly on the bottom surface of top cover (210), and hopper two (520) is fixedly communicated between exhaust pipe (500) and top cover (210).

6. The apparatus according to claim 1, wherein Motor (620) is fixed in the top of L-shaped beam (610), and gear one (630) is fixed on the output end of motor (620), and the output end of motor (620) is fixedly connected with connecting shaft (510).

7. The apparatus according to claim 6, wherein Gear two (640) is engaged and driven on the outside of gear one (630), and gear two (640) is fixedly sleeved on the outside of stirring pipe (310).

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