Smelting furnace for aluminum alloy production

Abstract

The smelting furnace for aluminum alloy production comprises a furnace body and a swirl chamber, the swirl chamber is fixedly connected to the side wall of the furnace body and internally communicated with the furnace body, an exhaust pipe is arranged on the side wall of the swirl chamber, and a dust removal mechanism is arranged at the other end, away from the swirl chamber, of the exhaust pipe and comprises a plurality of dust removal pipes. One end of each dust removal pipe is communicated with the exhaust pipe, the flue gas can pass through the dust removal pipes, a dust collection box is arranged outside the dust removal mechanism and wraps the dust removal mechanism, the end, away from the exhaust pipe, of the dust collection box is communicated with a heat recovery pipeline, and the heat recovery pipeline is communicated with the furnace body. According to the device, dust removal is conducted on discharged flue gas through the dust removal pipe, the flue gas with heat after dust removal is directly discharged into the furnace body again through the heat recovery pipe for heat recovery, the heat recovery efficiency of the smelting furnace is effectively improved, and the heating time and the temperature rising time of the smelting furnace are shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of aluminum alloy smelting, and particularly relates to a smelting furnace for aluminum alloy production. BACKGROUND

[0002] The smelting furnace for aluminum is a novel high-efficiency energy-saving furnace developed according to the aluminum smelting process, which can well meet the requirements in the aluminum smelting process, such as strict alloy component requirements, discontinuous production, large single-furnace capacity and the like, and has the effects of reducing consumption, reducing burning loss, improving product quality, reducing labor intensity, improving labor conditions and improving production efficiency, and is suitable for intermittent operation and smelting of alloys and a large amount of return materials. When the smelting furnace for aluminum is used for melting aluminum, the heat generated by the combustion of fuel in the furnace is discharged to the outside along with the exhaust gas of the smelting furnace for aluminum, resulting in a large amount of heat loss. At present, in order to prevent a large amount of heat loss, the air entering the furnace for combustion is preheated in a heat recovery mode. However, the flue gas contains unburned fuel dust, and the preheating and discharge of the air will cause waste of fuel. In addition, the dust contained in the flue gas is usually transported to a dust removal workshop for dust removal. However, the flue gas transportation requires a large amount of sealed pipelines, which leads to high cost of flue gas dust removal and a large amount of manpower for maintenance of the long pipelines. If leakage occurs, the surrounding environment will be polluted and the health of people will be affected.

[0003] The existing patent with the publication number "CN 215524223 U" discloses a "new heat cycle smelting furnace for aluminum", which comprises a smelting furnace body, a heat cycle unit and a dust removal unit. The smelting furnace body is connected by an exhaust pipe between the exhaust port on the upper end side and the air inlet on the middle side of the dust removal barrel. The heat cycle unit comprises a connecting pipe, an air induction fan, a blower and an air inlet pipe. The right end of the air inlet pipe is connected with the air inlet on the lower end side of the smelting furnace body, and the left end of the air inlet pipe is connected with the air outlet of the blower. The two ends of the connecting pipe are fixedly connected with the side surface of the middle part of the exhaust pipe and the side surface of the middle part of the air inlet pipe, respectively, and the connecting pipe communicates the interiors of the exhaust pipe and the air inlet pipe. The air induction fan is installed on the connecting pipe. The new heat cycle smelting furnace for aluminum can circulate the flue gas generated by the smelting furnace for aluminum, reduce heat loss, and directly remove the discharged flue gas without transporting the flue gas, thereby reducing the labor loss of transporting the flue gas and avoiding leakage of the flue gas during transportation. However, the smelting furnace for aluminum uses an atomizing nozzle to extract water mist to spray on the flue gas for dust removal, which can effectively prevent dust from floating, but the spraying of water mist will reduce the heat in the flue gas, causing heat loss and reducing the efficiency of the heat cycle unit. UTILITY MODEL CONTENTS

[0004] The utility model intends to provide a smelting furnace for aluminum alloy production to solve the problem that the spraying of water mist for dust removal in the existing patent greatly reduces the heat in the flue gas, thereby reducing the efficiency of the heat cycle unit.

[0005] The application discloses a smelting furnace for aluminum alloy production, which comprises a furnace body and a vortex chamber.

[0006] The working principle of the application is as follows: when in use, flue gas in the vortex chamber enters the exhaust pipe with dust and heat, and then enters the dust removal pipe in the dust collection box, wherein only flue gas can pass through the dust removal pipe, so that the dust adheres to the outer wall of the dust removal pipe, and the flue gas with heat enters the dust collection box and then reenters the furnace body through the heat recovery pipeline connected to the dust collection box to heat the aluminum alloy.

[0007] The device can effectively remove dust from the flue gas discharged through the dust removal pipe, and directly discharge the flue gas with heat after dust removal into the furnace body through the heat recovery pipeline for heat recovery, so that the heat recovery efficiency of the smelting furnace is effectively improved, the heating time and the temperature rising time of the smelting furnace are shortened, and the damage of dust floating in the air to the body of workers can be effectively avoided.

[0008] Further, the vibration mechanism is arranged at the position close to the upper end of the dust removal pipe, the side wall of the exhaust pipe and the side wall of the dust collection box are communicated with the dust collection pipe, and the middle part of the dust collection pipe is provided with a dust suction pump.

[0009] Further, the dust removal pipes are arranged in a circular array, the vibration mechanism comprises a vibrator and a vibration ring, the vibration ring is located at the center of the dust removal pipes and is fixedly connected with the dust removal pipes, the vibrator is coaxial with the vibration ring, and a plurality of connecting rods are arranged between the vibrator and the vibration ring, and two ends of the connecting rods are fixedly connected with the vibrator and the vibration ring, respectively.

[0010] Further, the plurality of dust removal pipes are fixedly connected to the exhaust pipe at one end, and the plurality of dust removal pipes are grid-shaped pipes that allow only flue gas and heat to pass through from the connection point to the fixed connection point of the exhaust pipe. The grid-shaped pipes facilitate the flue gas to enter the dust collection box from the exhaust pipe, while the dust with larger particles adheres to the dust removal pipes.

[0011] Further, the middle part of the exhaust pipe is provided with a valve between the vortex chamber and the dust removal pipe. The valve can temporarily close the exhaust pipe between the vortex chamber and the dust removal pipe when dust removal is needed, so that the flue gas temporarily stops entering the dust removal pipe, facilitating the cleaning of the dust extraction pump.

[0012] Further, the end of the plurality of dust removal pipes away from the exhaust pipe closes the communication between the heat recovery pipe and the dust collection box. This can effectively reduce the occurrence of dust entering the heat recovery pipe.

[0013] Further, the middle part of the heat recovery pipe is provided with an induced draft fan. The induced draft fan can effectively accelerate the speed of heat circulation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The structure of the smelting furnace for aluminum alloy production is shown in the schematic view of the utility model.

[0015] Figure 2 The structure of the smelting furnace for aluminum alloy production is shown in the schematic view of the utility model. Figure 1 The sectional view along A-A. DETAILED DESCRIPTION

[0016] The following will be further described in detail through specific embodiments:

[0017] The reference signs in the drawings of the specification include: furnace body 1, heat recovery pipe 2, induced draft fan 3, dust collection box 4, vibration mechanism 5, vibrator 51, connecting rod 52, vibration ring 53, dust removal pipe 6, air extraction pipe 7, dust extraction pump 8, exhaust pipe 9, valve 10, vortex chamber 11.

[0018] The embodiment is basically as shown in the accompanying drawings Figures 1-2The utility model discloses a smelting furnace for aluminum alloy production, including furnace body 1 and vortex chamber 11, furnace body 1 with the inside communication of vortex chamber 11, the side wall of vortex chamber 11 is communicated with exhaust pipe 9 away from furnace body 1, the middle part of exhaust pipe 9 is equipped with valve 10, and the communication of valve 10 and dust removal pipe 6 is equipped with the exhaust pipe 7, and the middle part of exhaust pipe 7 is equipped with dust pump 8, and exhaust pipe 7 is communicated with the collection tank outside, and the end of exhaust pipe 9 away from vortex chamber 11 is communicated with six dust removal pipes 6, and six dust removal pipes 6 are arranged in circular array, and six dust removal pipes 6 extend upwards and are perpendicular to the ground, and the end of six dust removal pipes 6 away from exhaust pipe 9 is fixedly connected to an organic whole, and the middle part of six pipes is equipped with vibrating mechanism 5, and six dust removal pipes 6 are only meshed pipe from the connection of exhaust pipe 9 to fixed connection, and dust removal pipe 6 is equipped with dust collection tank 4 outside, and dust collection tank 4 is equipped with exhaust pipe 9 outside in the bottom and is fixedly connected with exhaust pipe 9, and the bottom of dust collection tank 4 is communicated with exhaust pipe 7, and the top end is communicated with heat recovery pipe 2, and the entrance of heat recovery pipe 2 can be closed at the connection of six dust removal pipes 6, and the end of heat recovery pipe 2 away from dust collection tank 4 is communicated with furnace body 1, and the middle part of heat recovery pipe 2 is equipped with induced draft fan 3;

[0019] Vibrating mechanism 5 includes vibrator 51 and vibration ring 53, and vibrator 51 is located at the center of six dust removal pipes 6, and the outer side wall of vibration ring 53 is fixedly connected with six dust removal pipes 6 respectively, and three connecting rods 52 are arranged between vibrator 51 and vibration ring 53, and three connecting rods 52 are fixedly connected with vibrator 51 and vibration ring 53 respectively.

[0020] Specific implementation process is as follows: when using, the flue gas carries dust and is discharged from exhaust pipe 9, and enters six dust removal pipes 6 through exhaust pipe 9, and because dust removal pipe 6 can only pass through flue gas and heat, most of the dust is collected in dust removal pipe 6, so that flue gas and heat can directly enter dust collection tank 4 through dust removal pipe 6 or directly enter furnace body 1 through heat recovery pipe 2, and induced draft fan 3 can accelerate the flow of flue gas and heat, so that the heat circulation process is more rapid;

[0021] When the dust in dust removal pipe 6 accumulates too much, then vibrator 51 can be started, vibrator 51 passes through connecting rod 52 and brings vibration to vibration ring 53, and vibration ring 53 vibrates dust removal pipe 6, and the dust in dust removal pipe 6 falls back into exhaust pipe 9, at this time, valve 10 can be closed, and dust pump 8 is started, and the fallen dust is extracted from exhaust pipe 9, and the dust with too small particles in dust collection tank 4 is also extracted and collected in the collection tank outside for centralized treatment.

[0022] The above only is the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described too much here. It should be pointed out that, for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A melting furnace for aluminum alloy production, comprising a furnace body and a vortex chamber, wherein the vortex chamber is fixedly connected to the side wall of the furnace body and has internal communication, characterized in that: An exhaust pipe is provided on the side wall of the vortex chamber. A dust removal mechanism is provided at the other end of the exhaust pipe away from the vortex chamber. The dust removal mechanism includes multiple dust removal pipes, one end of which is connected to the exhaust pipe. Flue gas can pass through the dust removal pipes. A dust collection box is provided outside the dust removal mechanism. The dust collection box encloses the dust removal mechanism. A heat recovery pipe is connected to the end of the dust collection box away from the exhaust pipe. The heat recovery pipe is connected to the furnace body.

2. The smelting furnace for aluminum alloy production according to claim 1, characterized in that: The dust removal pipe is equipped with a vibration mechanism near its upper end. The side walls of the exhaust pipe and the dust collection box are both connected to dust collection pipes. A dust pump is installed in the middle of the dust collection pipe. The other end of the dust collection pipe away from the dust collection box is connected to an external dust collection box.

3. The smelting furnace for aluminum alloy production according to claim 2, characterized in that: The multiple dust collection pipes are arranged in a circular array. The vibration mechanism includes a vibrator and a vibration ring. The vibration ring is located at the center of the multiple dust collection pipes and is fixedly connected to each of the multiple dust collection pipes. The vibrator and the vibration ring are coaxial, and multiple connecting rods are provided between the vibrator and the vibration ring. The two ends of the multiple connecting rods are fixedly connected to the vibrator and the vibration ring, respectively.

4. The smelting furnace for aluminum alloy production according to claim 3, characterized in that: The ends of the multiple dust removal pipes furthest from the exhaust pipe are fixedly connected to the whole, and the multiple dust removal pipes are grid-shaped pipes from the exhaust pipe connection point to the fixed connection point, allowing only flue gas and heat to pass through.

5. A smelting furnace for aluminum alloy production according to claim 4, characterized in that: A valve is provided in the middle of the exhaust pipe, and the valve is located between the vortex chamber and the dust removal pipe.

6. A smelting furnace for aluminum alloy production according to claim 5, characterized in that: The ends of the multiple dust collection pipes furthest from the exhaust pipe close to the connection between the heat recovery pipe and the dust collection box.

7. A smelting furnace for aluminum alloy production according to claim 6, characterized in that: An induced draft fan is installed in the middle of the heat recovery pipe.

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