Secondary aluminum smelting furnace

Abstract

The utility model relates to the technical field of aluminum smelting furnaces, in particular to a secondary aluminum smelting furnace which comprises a heating furnace base, a furnace body is fixedly installed at the top of the heating furnace base, a pressure relief pipe is fixedly communicated with the top of the furnace body, a gas conveying pipe is fixedly communicated with the top end of the pressure relief pipe, and a purification box is fixedly communicated with the bottom end of the gas conveying pipe. And purification liquid is contained in the purification box, a shaft rod is rotationally connected to the interior of the pressure relief pipe, and a plurality of stirring paddles are fixed to the bottom of the shaft rod at equal intervals. According to the aluminum smelting device, high-pressure airflow is discharged through the pressure relief pipe, the airflow drives the first fan blade to rotate in the process of passing through the first fan blade, the fan blade drives the multiple stirring paddles to rotate to stir aluminum in the smelting state, the purpose that pressure relief air pressure serves as power to stir and smelt the aluminum is achieved, the aluminum can be fully smelted conveniently, and in the stirring process, the stirring effect is good. Waste gas in aluminum smelting can be fully released, and the released waste gas is conveyed to the purification box to be purified.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum smelting furnaces, in particular to a regeneration aluminum smelting furnace. Background Art

[0002] Recycled aluminum is aluminum metal obtained by remelting and refining scrap aluminum and scrap aluminum alloy materials or aluminum-containing waste. The smelting of recycled aluminum is generally carried out by heating and smelting in a smelting furnace. During the use of the smelting furnace, since the smelting of recycled aluminum is in a sealed environment, the pressure is likely to increase continuously. In order to prevent safety hazards caused by excessive pressure, a pressure relief pipe is installed on the outside of the smelting furnace. The flue gas discharged from the pressure relief pipe is easy to pollute the environment, reducing the environmental friendliness of the use of the smelting furnace. In addition, the design of most smelting furnaces does not make good use of the high-pressure exhaust gas generated during the smelting process, resulting in a waste of pressure energy discharged with the pressure relief pipe, increasing unnecessary costs. Utility Model Content

[0003] The purpose of the utility model is to provide a regenerative aluminum smelting furnace to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A secondary aluminum smelting furnace comprises a heating furnace seat, a furnace body is fixedly installed on the top of the heating furnace seat, a pressure relief pipe is connected and fixed to the top of the furnace body, a gas pipe is connected and fixed to the top of the pressure relief pipe, a purification box is connected and fixed to the bottom of the gas pipe, a purified liquid is contained in the purification box, a shaft is rotatably connected to the inside of the pressure relief pipe, a plurality of stirring paddles are fixed at equal intervals at the bottom of the shaft, a plurality of fan blades are fixed at equal intervals at the top of the shaft, a support tube is fixed to the top of the furnace body, a dual-axis motor is fixed to the top of the support tube, a top output end of the dual-axis motor is meshed and rotated with the shaft, a transmission shaft is fixed to the bottom output end of the dual-axis motor, a plurality of fan blades are fixed at equal intervals on the outside of the transmission shaft.

[0006] Furthermore, a solenoid valve is installed in series in the middle of the gas pipe, a filter is fixed on the inner bottom of the purification box, and the bottom end of the gas pipe passes through the filter.

[0007] Furthermore, an exhaust pipe is connected and fixed to the top of the purification box, a filter tube is connected and fixed to the top end of the exhaust pipe, and the interior of the filter tube is filled with activated carbon.

[0008] Furthermore, the outside of the purification box is connected to and fixed with an infusion tube, the interior of the infusion tube is connected in series with a second valve, the bottom end of the purification box is connected to and fixed with a sewage pipe, the interior of the sewage pipe is installed in series with a first valve.

[0009] Furthermore, a driven gear is sleeved on the top end of the shaft, and a driving gear meshing with the driven gear is fixed on the top output end of the dual-shaft motor.

[0010] Furthermore, a one-way bearing is arranged between the driven gear and the shaft, the fan blade is arranged inside the pressure relief pipe, and the stirring paddle is arranged inside the furnace body.

[0011] Furthermore, an air intake pipe is connected and fixed to the outside of the support tube, and a valve three is installed in series inside the air intake pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The furnace body is heated by heating the furnace seat. When the gas pressure in the furnace body is high during the aluminum smelting process, the solenoid valve on the gas pipe is opened to allow the high-pressure gas flow to be transported from the pressure relief pipe through the gas pipe to the inside of the purification box. An appropriate amount of purification liquid (such as alkaline solution or oxidant solution, etc., used to react with harmful gases and convert them into harmless substances) is transported to the purification box through the liquid infusion pipe in advance, so that the waste gas entering the purification liquid can be purified, and the waste gas is passed to the bottom of the filter screen, so that the floating purified gas will be filtered through the filter screen, and finally discharged to the outside through the activated carbon inside the filter tube, so that the waste gas can be fully purified, thereby improving the environmental protection of the smelting furnace.

[0014] High-pressure airflow is discharged through the pressure relief pipe. When the airflow passes through fan blade one, it will drive fan blade one to rotate. Fan blade one drives multiple stirring paddles to rotate and stir the aluminum in a smelting state, so that the pressure of the depressurized air is used as power to stir the molten aluminum, which facilitates the full smelting of the aluminum. At the same time, the waste gas in the molten aluminum can be fully released during the stirring process. A one-way bearing is arranged between the driven gear at the top of the shaft and the shaft. At this time, the rotation of the shaft will not drive the driven gear to rotate.

[0015] The motor drives the driving gear to rotate so that the driven gear drives the shaft to rotate slowly through the one-way bearing, so that in the initial state, the shaft relies on the external motor as a power source to rotate, stir and melt the aluminum. By making the double-axis motor rotate in the opposite direction, under the action of the one-way bearing, the driving gear drives the driven gear to rotate on the shaft, so that the output end at the bottom of the double-axis motor quickly drives the fan blade 2 to rotate, and the valve 3 of the air inlet pipe is opened to facilitate the outside airflow to enter the furnace body, and then the exhaust gas inside the furnace body is discharged from the pressure relief pipe. After the aluminum smelting is completed, the exhaust gas remaining in the furnace body is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the furnace body and the purification box in the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the pressure relief pipe in the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the interior of the support cylinder and the dual-axis motor in the utility model;

[0020] Figure 5 It is a schematic diagram of the internal structure of the purification box in the utility model.

[0021] In the figure: 100, heating furnace base; 110, furnace body; 111, feeding door plate; 200, pressure relief pipe; 210, air pipe; 211, solenoid valve; 300, shaft; 310, stirring paddle; 320, fan blade one; 330, driven gear; 331, one-way bearing; 400, purification box; 410, exhaust pipe; 411, filter pipe; 420, liquid infusion pipe; 430, sewage pipe; 431, valve one; 440, filter screen; 500, support cylinder; 510, air inlet pipe; 600, dual-axis motor; 610, transmission shaft; 611, fan blade two; 620, driving gear. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the utility model. Example

[0023] See also Figure 1-5 In the embodiment of the utility model, a secondary aluminum smelting furnace is provided, a heating furnace seat 100, a furnace body 110 is fixedly installed on the top of the heating furnace seat 100, a pressure relief pipe 200 is connected and fixed to the top of the furnace body 110, a gas pipe 210 is connected and fixed to the top of the pressure relief pipe 200, a purification box 400 is connected and fixed to the bottom of the gas pipe 210, a purification liquid is contained in the purification box 400, a shaft 300 is rotatably connected to the inside of the pressure relief pipe 200, a plurality of stirring paddles 310 are fixed at equal intervals at the bottom of the shaft 300, a plurality of fan blades 320 are fixed at equal intervals at the top of the shaft 300, a support cylinder 500 is fixed to the top of the furnace body 110, a dual-axis motor 600 is fixed to the top of the support cylinder 500, a top output end of the dual-axis motor 600 is meshed and rotated with the shaft 300, a transmission shaft 610 is fixed to the bottom output end of the dual-axis motor 600, and a plurality of fan blades 611 are fixed at equal intervals on the outside of the transmission shaft 610.

[0024] Specifically, high-pressure airflow is discharged through the pressure relief pipe 200. When the airflow passes through the fan blade 320, it will drive the fan blade 320 to rotate. The fan blade 320 drives multiple stirring paddles 310 to rotate and stir the aluminum in the smelting state, so as to utilize the decompressed air pressure as the power to stir the molten aluminum, so as to fully smelt the aluminum. At the same time, during the stirring process, the waste gas in the molten aluminum can be fully released, and the released waste gas is then transported to the purification box 400 for purification.

[0025] like Figure 2 As shown, in this embodiment, a solenoid valve 211 is installed in series in the middle of the gas pipe 210 , a filter screen 440 is fixed to the inner bottom of the purification box 400 , and the bottom end of the gas pipe 210 passes through the filter screen 440 .

[0026] In this embodiment, the solenoid valve 211 is convenient for controlling the exhaust gas to be transported by the pressure relief pipe 200. The air pressure inside the furnace body 110 can be detected by using an external barometer. When the air pressure is high, the solenoid valve 211 is opened to release the air. The filter 440 can filter the exhaust gas purified by the purified liquid.

[0027] like Figure 2 As shown, in this embodiment, the top of the purification box 400 is connected to and fixed with an exhaust pipe 410, and the top of the exhaust pipe 410 is connected to and fixed with a filter tube 411. The interior of the filter tube 411 is filled with activated carbon, which can further absorb and filter the exhaust gas, making the exhaust gas discharged to the outside more environmentally friendly.

[0028] like Figure 1 and Figure 2 As shown, in this embodiment, the outer side of the purification box 400 is connected to and fixed with an infusion tube 420, the interior of the infusion tube 420 is connected in series with a valve 2, and the bottom end of the purification box 400 is connected to and fixed with a sewage pipe 430, the interior of the sewage pipe 430 is installed in series with a valve 1 431.

[0029] In this embodiment, the infusion tube 420 can not only transport the purified liquid to the purification box 400, but also extract the purified liquid, which is convenient for replacing the purified liquid in the purification box 400. Opening the valve 431 on the drain pipe 430 can discharge the waste liquid filtered from the bottom of the purification box 400.

[0030] like Figure 1 As shown, in this embodiment, a material feeding door plate 111 is detachably mounted and fixed on the outer side of the furnace body 110 , and the material feeding door plate 111 is opened to facilitate the feeding of aluminum to be melted into the furnace body 110 . Example

[0031] On the basis of the first embodiment, in order to discharge the exhaust gas inside the furnace body 110 in the later stage of smelting, it is prevented that the exhaust gas leaks out when the furnace body 110 is opened.

[0032] like Figure 2-4 As shown, in this embodiment, a driven gear 330 is sleeved on the top end of the shaft 300, a driving gear 620 meshing with the driven gear 330 is fixed to the top output end of the dual-axis motor 600, a one-way bearing 331 is arranged between the driven gear 330 and the shaft 300, the fan blade 320 is arranged inside the pressure relief pipe 200, the stirring paddle 310 is arranged inside the furnace body 110, and the outer side of the support tube 500 is connected and fixed with an air intake pipe 510, and a valve three is installed in series inside the air intake pipe 510.

[0033] Specifically, in the initial state, the internal air pressure of the furnace body 110 has not reached a high value, so that the output end at the top of the dual-axis motor 600 can make the driving gear 620 rotate clockwise, and the driven gear 330 rotates counterclockwise to make the shaft 300 rotate counterclockwise. At this time, the one-way bearing 331 allows the driven gear 330 to rotate with the shaft 300 so that the stirring paddle 310 under the shaft 300 can stir the molten aluminum. In the middle of smelting, when the internal air pressure of the furnace body 110 is high, the dual-axis motor 600 is turned off, and the pressure relief pipe 200 is opened to allow the airflow to pass through the fan blade 1 320 and make the shaft 300 continue to rotate counterclockwise. At this time, the one-way bearing 331 on the shaft 300 is in the driven gear 330. The gear 330 is idling inside, and the driven gear 330 does not rotate with the driving gear 620. In the later stage of smelting, the air pressure inside the furnace body 110 is not enough to discharge the residual exhaust gas from the furnace body 110. At this time, the dual-axis motor 600 rotates counterclockwise at a high speed, and the driving gear 620 at the top of the dual-axis motor 600 continues to idle with the driven gear 330 on the one-way bearing 331. The shaft 300 does not rotate, and the fan blade 2 611 inside the support tube 500 rotates at a high speed to fill the outside gas into the furnace body 110, so that the airflow inside the furnace body 110 can be circulated and transported to the position of the pressure relief pipe 200 and then purified, so as to facilitate the discharge of the residual exhaust gas inside the furnace body 110.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A secondary aluminum smelting furnace, comprising a heating furnace seat (100), characterized in that: A furnace body (110) is fixedly mounted on the top of the heating furnace seat (100); a pressure relief pipe (200) is connected and fixedly connected to the top of the furnace body (110); a gas supply pipe (210) is connected and fixedly connected to the top of the pressure relief pipe (200); a purification box (400) is connected and fixedly connected to the bottom of the gas supply pipe (210); a purification liquid is contained in the purification box (400); a shaft (300) is rotatably connected to the inside of the pressure relief pipe (200); and a plurality of stirring rods (300) are fixedly connected to the bottom of the shaft (300) at equal intervals. A mixing paddle (310), a plurality of fan blades (320) are fixed at equal intervals on the top of the shaft (300), a support tube (500) is fixed on the top of the furnace body (110), a dual-axis motor (600) is fixed on the top of the support tube (500), a top output end of the dual-axis motor (600) meshes with the shaft (300) for rotation, a transmission shaft (610) is fixed on the bottom output end of the dual-axis motor (600), and a plurality of fan blades (611) are fixed on the outer side of the transmission shaft (610) at equal intervals.

2. A secondary aluminum smelting furnace according to claim 1, characterized in that: A solenoid valve (211) is installed in series in the middle of the gas delivery pipe (210), a filter screen (440) is fixed to the inner bottom of the purification box (400), and the bottom end of the gas delivery pipe (210) passes through the filter screen (440).

3. A secondary aluminum smelting furnace according to claim 1, characterized in that: An exhaust pipe (410) is connected and fixed to the top of the purification box (400), and a filter tube (411) is connected and fixed to the top of the exhaust pipe (410), and the interior of the filter tube (411) is filled with activated carbon.

4. A secondary aluminum smelting furnace according to claim 1, characterized in that: The outside of the purification box (400) is connected to and fixed with an infusion tube (420), and a second valve is connected in series inside the infusion tube (420). The bottom end of the purification box (400) is connected to and fixed with a sewage discharge pipe (430), and a first valve (431) is installed in series inside the sewage discharge pipe (430).

5. A secondary aluminum smelting furnace according to claim 1, characterized in that: An air intake pipe (510) is connected and fixed to the outside of the support cylinder (500), and a valve three is installed in series inside the air intake pipe (510).

6. A secondary aluminum smelting furnace according to claim 1, characterized in that: A driven gear (330) is sleeved on the top end of the shaft (300), and a driving gear (620) meshing with the driven gear (330) is fixed to the top output end of the dual-shaft motor (600).

7. A secondary aluminum smelting furnace according to claim 6, characterized in that: A one-way bearing (331) is provided between the driven gear (330) and the shaft (300), the fan blade (320) is arranged inside the pressure relief pipe (200), and the stirring paddle (310) is arranged inside the furnace body (110).

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