Heat accumulating type waste heat circulation aluminum melting furnace

Abstract

The utility model aims to provide a heat accumulating type waste heat circulation aluminum melting furnace which comprises an aluminum melting furnace body and two heat accumulating barrels, the top of each heat accumulating barrel is communicated with the aluminum melting furnace body, each heat accumulating barrel is provided with an air opening for external air to enter, and each heat accumulating barrel is provided with an exhaust port for combustion waste gas in the aluminum melting furnace body to be exhausted out of the barrel through the corresponding heat accumulating barrel. The heat storage barrels are provided with gas openings for external gas fuel to enter, and the two heat storage barrels are installed on the same side wall of the aluminum melting furnace body side by side. And two connecting ports formed by communicating the two heat storage barrels with the aluminum melting furnace body are positioned on the same side wall of the aluminum melting furnace body. The two connectors formed by communicating the two heat storage barrels with the aluminum melting furnace body are located on the same side wall of the aluminum melting furnace body, the two connectors cannot face each other, and gas flow cannot easily flow to the other connector to be discharged after entering the aluminum melting furnace body from one connector. Therefore, the stroke in the aluminum melting furnace body can be lengthened, and combustion is more sufficient.

Description

Technical Field

[0001] The utility model relates to the field of aluminum recycling, especially an aluminum melting furnace. Background Art

[0002] Patent document CN204787795U discloses a double regenerative aluminum melting furnace device. This double regenerative aluminum melting furnace device includes an aluminum melting furnace body 1. On the left and right sides of the aluminum melting furnace body 1, there are respectively two regenerative drums 7 and 8. The tops of each regenerative drum 7 and 8 are communicated with the aluminum melting furnace body 1, and air openings and gas openings are opened at the bottoms. The air openings are equipped with air three-way valves 13, and the gas openings are equipped with gas three-way valves 14. The working process is as follows: The left regenerative drum 7 is used as the inlet. Air enters the aluminum melting furnace body 1 through the air three-way valve 13 of the left regenerative drum 7. Gas enters the aluminum melting furnace body 1 through the gas three-way valve 14 of the left regenerative drum 7 and mixes with the air and then burns to melt the aluminum materials in the aluminum melting furnace body 1. The waste gas generated by combustion carries heat and enters the right regenerative drum 8, and a part of the heat is recovered by it and then discharged through the air three-way valve 13 of the right regenerative drum 8. After the right regenerative drum 8 recovers enough heat, the right regenerative drum 8 is changed to the inlet. Air enters the right regenerative drum 8 through the air three-way valve 13 of the right regenerative drum 8 to obtain the heat recovered by it. Gas enters the right regenerative drum 8 through the gas three-way valve 14 of the right regenerative drum 8 to obtain the heat recovered by it, and then enters the aluminum melting furnace body 1 and mixes with the air and then burns to melt the aluminum materials in the aluminum melting furnace body 1. The waste gas generated by combustion carries heat and enters the left regenerative drum 7, and a part of the heat is recovered by it and then discharged through the air three-way valve 13 of the left regenerative drum 7. According to this cycle, the heat in the combustion waste gas is alternately recovered by the left regenerative drum 7 and the right regenerative drum 8, and the left regenerative drum 7 and the right regenerative drum 8 alternately serve as inlets to use the recovered heat to preheat the air about to enter the aluminum melting furnace body 1. The defects of the prior art are as follows: As shown in the patent document Figure 1 shown, its two regenerative drums 7 and 8 are arranged one on the left and the other on the right. On the one hand, the length in the left-right direction is too large and it is not easy to place. On the other hand, the two connection ports formed by the connection of the two regenerative drums 7 and 8 with the aluminum melting furnace body 1 face each other. The gas fuel formed by the mixture of gas and air easily flows directly into the right regenerative drum 8 after entering the aluminum melting furnace body 1 from the left regenerative drum 7. The travel of the gas fuel in the aluminum melting furnace body 1 is too short, which easily leads to incomplete combustion. Summary of the Utility Model

[0003] The utility model aims to provide a regenerative waste heat recycling aluminum melting furnace, which has a reasonable length and is easy to place, and the gas fuel burns fully in the aluminum melting furnace body.

[0004] Regenerative waste heat recycling aluminum melting furnace, including an aluminum melting furnace body and two regenerative barrels. The top of each regenerative barrel is connected to the aluminum melting furnace body. The regenerative barrel is provided with an air opening for external air to enter, an exhaust opening for the combustion waste gas inside the aluminum melting furnace body to be discharged outside the barrel through the regenerative barrel, and a gas opening for external gaseous fuel to enter. The two regenerative barrels are arranged side by side on the same side wall of the aluminum melting furnace body; the two connection ports formed by connecting the two regenerative barrels to the aluminum melting furnace body are located on the same side wall of the aluminum melting furnace body.

[0005] Further, the two connection ports are specifically opened on the front and rear parts of the right side wall of the aluminum melting furnace body. A first air guiding baffle in the left - right horizontal direction is installed behind the front connection port on the inner right side wall of the aluminum melting furnace body, and a second air guiding baffle in the left - right horizontal direction is installed in front of the rear connection port.

[0006] Further, the left end of the first air guiding baffle extends obliquely backward, and the left end of the second air guiding baffle extends obliquely forward.

[0007] Further, an isosceles triangular prism is installed in the middle of the inner left side wall of the aluminum melting furnace body, and the side edge where the non - isosceles angle of the triangular prism is located faces the middle of the inner right side wall of the aluminum melting furnace body.

[0008] Further, a feeding port is opened on the rear side wall of the aluminum melting furnace body.

[0009] Further, a furnace cover is installed above the feeding port on the rear side wall of the aluminum melting furnace body, and a linear driving device is installed above the furnace cover. The furnace cover is connected to the linear driving device, and the furnace cover is driven by the linear driving device to move downward to close the feeding port.

[0010] The beneficial effects are as follows: On the one hand, the two regenerative barrels are arranged side by side on the same side wall of the aluminum melting furnace body. That is, on the basis of an existing regenerative barrel, the space beside the regenerative barrel is reasonably utilized to accommodate another regenerative barrel, without having to install the other regenerative barrel on the opposite side wall of the aluminum melting furnace body. Therefore, there is no need to additionally increase the length of this regenerative waste heat recycling aluminum melting furnace, and it is easy to place in the workshop. On the other hand, the two connection ports formed by connecting the two regenerative barrels to the aluminum melting furnace body are located on the same side wall of the aluminum melting furnace body. These two connection ports will not face each other, so the gas flow is not so easy to flow out from one connection port to the other after entering the aluminum melting furnace body. Therefore, the travel distance inside the aluminum melting furnace body can be longer, and the combustion is more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the right view of the regenerative waste heat recycling aluminum melting furnace of the present utility model;

[0012] Figure 2 is Figure 1 the sectional view taken along the line A - A of

[0013] In the figure: 1, the main body of the aluminum melting furnace; 2, the second heat storage barrel; 3, the transition pipe; 5, the air pipe; 6, the first heat storage barrel; 10, the feeding port; 11, the side edge; 12, the furnace cover; 13, the motor sprocket drive device; 15, the isosceles triangular prism; 16, the combustible gas flow; 17, the second air guiding baffle; 18, the first air guiding baffle; 20, the side front air guiding surface; 21, the waste gas. Specific embodiments

[0014] The following further elaborates on the present utility model in detail in conjunction with specific embodiments.

[0015] As Figure 1 shown, the regenerative waste heat recycling aluminum melting furnace includes the main body 1 of the aluminum melting furnace. Two heat storage barrels 6 and 2, the first and the second, are installed on the right side wall of the main body 1 of the aluminum melting furnace. An air opening and a gas opening (not shown in the figure) are provided at the top of each heat storage barrel. A transition pipe 3 is provided at the top of each heat storage barrel, and the transition pipe 3 is respectively connected to the heat storage barrel and the main body 1 of the aluminum melting furnace. An air pipe 5 is installed at the bottom of each heat storage barrel. A feeding port 10 is provided on the rear side wall of the main body 1 of the aluminum melting furnace. A furnace cover 12 is provided above the feeding port 10 on the rear side wall of the main body 1 of the aluminum melting furnace, and a motor sprocket drive device 13 is installed above the furnace cover 12. The furnace cover 12 is installed on the chain of the motor sprocket drive device 13, and the furnace cover 12 is driven by the linear drive device 13 to move downward to close the feeding port 10.

[0016] As shown in the interior of the main body 1 of the aluminum melting furnace Figure 2 shown, the connection parts between each transition pipe 3 and the main body 1 of the aluminum melting furnace are used as connection ports, and these two connection ports are specifically opened on the front and rear parts of the right side wall of the main body 1 of the aluminum melting furnace. A left - right horizontal first air guiding baffle 18 is installed on the right inner wall of the main body 1 of the aluminum melting furnace behind the front connection port, and the left end of the first air guiding baffle 18 extends obliquely backward at an angle of 45°. A left - right horizontal second air guiding baffle 17 is installed on the right inner wall of the main body 1 of the aluminum melting furnace in front of the rear connection port, and the left end of the second air guiding baffle 17 extends obliquely forward at an angle of 45°. An isosceles triangular prism 15 is installed in the middle of the left inner wall of the main body 1 of the aluminum melting furnace. The non - isosceles angle of the triangular prism is 120°, and the side edge 11 where it is located faces the middle of the right inner wall of the main body 1 of the aluminum melting furnace.

[0017] The working process of the regenerative waste heat recycling aluminum melting furnace is described in detail in this paragraph. As Figure 1 shown, the operator drives the motor sprocket drive device 13 to open the furnace cover 12, puts the aluminum material into the main body 1 of the aluminum melting furnace through the feeding port 10, and then closes the furnace cover 12. The first heat storage barrel 6 serves as an inlet. Air enters the first heat storage barrel 6 through the air opening (not shown in the figure) of the first heat storage barrel 6, and gaseous fuel enters the first heat storage barrel 6 through the gas opening (not shown in the figure) of the first heat storage barrel 6 and mixes with the air to form a combustible gas flow 16. As Figure 2As shown, the combustible gas stream 16 enters the main body 1 of the aluminum melting furnace from the left through the transition pipe 3, and then is guided by the first air guiding baffle 18 to the left front. Then, it is blocked by the inner wall on the front side of the main body 1 of the aluminum melting furnace and turns to the left rear. It is blocked by the air guiding surface 20 on the front side of the triangular column and turns to the right rear. This travel is large enough, so the combustible gas stream 16 can be fully burned in the main body 1 of the aluminum melting furnace to melt the aluminum material. The waste gas 21 generated by combustion enters the second heat storage barrel 2 and is absorbed by it, and then is discharged through the air pipe 5 (serving as the exhaust port) of the second heat storage barrel 2. The functions of the first air guiding baffle 18 and the second air guiding baffle 17 are to prevent the combustible gas stream 16 from entering the main body 1 of the aluminum melting furnace from the first heat storage barrel 6 and immediately turning to the rear and entering the second heat storage barrel 2 for discharge. The function of the air guiding surface 20 on the front side of the triangular column is to change the path of the combustible gas stream 16 again, making its travel longer and the combustion more complete. When the second heat storage barrel 2 has absorbed enough heat, the second heat storage barrel 2 is changed to be the inlet, that is, the external air enters the second heat storage barrel 2 through the air opening of the second heat storage barrel 2 to obtain heat and is preheated. The gaseous fuel enters the second heat storage barrel 2 through the gas opening (not shown in the figure) of the second heat storage barrel 2 and is mixed with the air to form the combustible gas stream 16. The combustible gas stream 16 enters the main body 1 of the aluminum melting furnace for combustion, and the generated waste gas 21 enters the first heat storage barrel 6 and is absorbed by it, and then is discharged through the air pipe 5 of the first heat storage barrel 6. In this cycle, the first heat storage barrel 6 and the second heat storage barrel 2 take turns as the inlet to recover heat from the combustion waste gas 21, and then use the recovered heat to preheat the air that is about to enter the main body 1 of the aluminum melting furnace. It is easier to reach the target temperature in the main body 1 of the aluminum melting furnace, saving gaseous fuel.

[0018] As described above, it is only the implementation manner of the present utility model creation, and does not limit the scope of patent protection. Those skilled in the art make non-substantive changes or substitutions based on the present utility model creation, and still fall within the scope of patent protection.

Claims

1. A heat storage type waste heat circulation aluminum melting furnace, comprising an aluminum melting furnace body and two heat storage barrels, the tops of each heat storage barrel are connected to the aluminum melting furnace body, the heat storage barrels are provided with air openings for external air to enter, exhaust ports for combustion exhaust gas inside the aluminum melting furnace body to be discharged to the outside of the barrel through the heat storage barrels, and gas openings for external gas fuel to enter the heat storage barrels, characterized in that: The two heat storage barrels are arranged side by side on the same side wall of the aluminum melting furnace body; the two connection ports formed by the two heat storage barrels communicating with the aluminum melting furnace body are located on the same side wall of the aluminum melting furnace body.

2. The regenerative waste heat circulation aluminum melting furnace according to claim 1, characterized in that: The two connection ports are specifically opened on the front and rear of the right side wall of the aluminum melting furnace body respectively. The right side inner wall of the aluminum melting furnace body is equipped with a first horizontal wind guide baffle behind the front connection port, and a second horizontal wind guide baffle in front of the rear connection port.

3. The regenerative waste heat circulation aluminum melting furnace according to claim 2, characterized in that: The left end of the first wind guide baffle extends obliquely rearward, and the left end of the second wind guide baffle extends obliquely forward.

4. The regenerative waste heat circulation aluminum melting furnace according to claim 3, characterized in that: An isosceles triangular prism is arranged in the middle of the left inner wall of the aluminum melting furnace body, and the side edge where the non-isosceles angle of the triangular prism is located faces the middle of the right inner wall of the aluminum melting furnace body.

5. The regenerative waste heat circulation aluminum melting furnace according to claim 1, characterized in that: A feeding port is provided on the rear side wall of the aluminum melting furnace body.

6. The regenerative waste heat circulation aluminum melting furnace according to claim 5, characterized in that: A furnace cover is arranged on the rear side wall of the aluminum melting furnace body above the feeding port, and a linear driving device is arranged above the furnace cover. The furnace cover is connected to the linear driving device, and the furnace cover is driven by the linear driving device to move downward to close the feeding port.

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