Composite aluminum material aging furnace

Abstract

The invention discloses a composite aluminum material aging furnace. The composite aluminum material aging furnace comprises a first preheating chamber, a second preheating chamber and a direct heating chamber which are sequentially arranged, a preheating gas distributor is mounted at the top of the first preheating chamber; the second preheating chamber and the direct heating chamber are connected into a whole in a butt joint mode, the top of the second preheating chamber is provided with a second preheating chamber horizontal hot air pipe communicated with the inner space of the second preheating chamber, and one end of the second preheating chamber horizontal hot air pipe is connected with a preheating gas distributor. A plurality of pairs of fuel gas burners are installed on the two sides of the direct heating chamber conveying roller and communicated with a fuel gas distribution pipe, a direct heating chamber horizontal hot air pipe communicated with the inner space of the direct heating chamber is installed on the top of the direct heating chamber, and the direct heating chamber horizontal hot air pipe is communicated with a second preheating chamber horizontal hot air pipe. And the second preheating chamber horizontal hot air pipe is connected with a horizontal fan through an air entraining pipe. According to the composite aluminum material aging furnace, the design form of combining direct heating and medium heat transfer is adopted, and energy consumption is low; the overall treatment efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum material aging heat treatment equipment, and in particular to a composite aluminum material aging furnace, which performs aging treatment on aluminum material by air preheating and then direct heating. Background Art

[0002] Aluminum aging furnace is a special equipment for aging heat treatment of aluminum castings after solid solution treatment. It is specifically used for aging heat treatment of aluminum castings, aluminum profiles, aluminum plates, aluminum mesh plates, etc. under a stable and uniform high temperature state.

[0003] In the aluminum processing process, any material must undergo one or several heating and / or heat treatments during production. At present, there are generally two forms of aging heat treatment of aluminum in aluminum aging furnaces - circulation through gas to carry heat and direct heating of aluminum. The most commonly used form - circulation through gas to carry heat has the advantage of good thermal uniformity, but using gas as a heat transfer medium will inevitably affect the overall efficiency, that is, the energy consumption is higher than direct heating, and the cost is higher. Although direct heating has relatively low energy consumption, the heat treatment temperature of aluminum is relatively high. It takes a long time to directly treat it to the target temperature, which will affect the overall processing efficiency of the aluminum aging furnace to a certain extent.

[0004] Therefore, it is of great practical significance to develop an aluminum aging furnace that can well balance energy consumption and processing efficiency. Summary of the invention

[0005] Due to the above-mentioned defects in the prior art, the present invention provides an aluminum aging furnace that can well balance energy consumption and processing efficiency, thereby overcoming the defect that the existing aluminum aging furnace is difficult to achieve a good balance between low energy consumption and high processing efficiency.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A composite aluminum material aging furnace comprises a first preheating chamber, a second preheating chamber and a direct heating chamber which are arranged in sequence;

[0008] A plurality of first preheating chamber conveying wheels are installed in the first preheating chamber along the conveying direction of the aluminum material, and a preheating gas distributor is installed on the top of the first preheating chamber;

[0009] The second preheating chamber is connected to the direct heating chamber as a whole, a plurality of groups of second preheating chamber conveying rollers are arranged in the second preheating chamber along the conveying direction of the aluminum material, a second preheating chamber horizontal hot air duct connected to the inner space of the second preheating chamber is arranged on the top of the second preheating chamber, a plurality of groups of direct heating chamber conveying rollers are arranged in the direct heating chamber along the conveying direction of the aluminum material, a plurality of pairs of gas burners are arranged on both sides of the direct heating chamber conveying rollers, the gas burners are connected to the gas distribution pipe located outside the direct heating chamber, a direct heating chamber horizontal hot air duct connected to the inner space of the direct heating chamber is arranged on the top of the direct heating chamber, the other end of the direct heating chamber horizontal hot air duct is connected to the second preheating chamber horizontal hot air duct, the second preheating chamber horizontal hot air duct is connected to the horizontal fan (providing a power source for the horizontal hot air duct to guide air) through the horizontal fan induced draft duct, and the second preheating chamber horizontal hot air duct is connected to the preheating gas distributor.

[0010] The composite aluminum aging furnace of the present invention has a reasonable structural design. The equipment uses the heat brought by the combustion of gas in the direct heating chamber as a heat source. It can not only perform aging heat treatment on the aluminum in the direct heating chamber, but also transport the hot air to the second preheating chamber and the first preheating chamber through the horizontal hot air pipe. The aluminum is preheated in multiple stages in the first preheating chamber (about 200°C) and the second preheating chamber (about 400°C), and then heated to about 600°C in the direct heating chamber. The composite aluminum aging furnace adopts a combination of direct heating and medium heat transfer (hot air), fully utilizing the heat directly heated to the air medium, with low energy consumption. The presence of the first preheating chamber and the second preheating chamber greatly improves the overall processing efficiency of the composite aluminum aging furnace, and has great application prospects.

[0011] As the preferred technical solution:

[0012] In the composite aluminum aging furnace as described above, the direct heating chamber is provided with a furnace door for closing its opening at the end away from the second preheating chamber;

[0013] The second preheating chamber is provided with a furnace door for closing its opening at the end away from the direct heating chamber.

[0014] In the composite aluminum aging furnace as described above, a heat exchange hot air pipe is installed on the horizontal hot air pipe of the second preheating chamber;

[0015] The heat exchange hot air pipe is connected to the air inlet of the air heat exchanger, the other air inlet of the air heat exchanger is connected to the air duct, the air outlet of the air heat exchanger is connected to the air outlet pipe, a down fan is installed on the air outlet pipe, and the air outlet pipe is connected to the inner space of the second preheating chamber. The horizontal hot air is introduced into the second preheating chamber after heat exchange with the external air intake, which can not only increase the temperature of the external air intake, but also reduce the temperature of the air coming from the direct heating chamber, so as to achieve staged aging treatment.

[0016] The composite aluminum aging furnace as described above also includes a distribution box;

[0017] The distribution box is electrically connected to the downwind fan and the horizontal fan respectively.

[0018] In the composite aluminum aging furnace as described above, the gas outlet pipe is connected to the preheating gas distributor.

[0019] In the composite aluminum aging furnace as described above, the gas outlet pipe is connected to the inner space of the direct heating chamber through the inward gas supply pipe. After the horizontal hot air pipe discharges the gas in the direct heating chamber, the pressure in the direct heating chamber is reduced, affecting the combustion efficiency of the gas. The inward gas supply pipe can be used to supply oxygen to the direct heating chamber to ensure that the gas is fully burned. The heat exchange between the intake air and the hot air will increase the intake air temperature, so as not to affect the temperature in the direct heating chamber, thereby affecting the aging treatment effect.

[0020] In the composite aluminum aging furnace as described above, a transfer conveying wheel is provided between the first preheating chamber and the second preheating chamber, and the transfer conveying wheel is fixedly installed at the exit of the first preheating chamber to facilitate the transfer of aluminum between the first preheating chamber and the second preheating chamber.

[0021] The above technical solution is only a feasible technical solution of the present invention, and the protection scope of the present invention is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0022] The above invention has the following advantages or beneficial effects:

[0023] (1) The composite aluminum aging furnace of the present invention has a reasonable structural design. The equipment uses the heat generated by the combustion of gas in the direct heating chamber as a heat source. It can not only perform aging heat treatment on the aluminum in the direct heating chamber, but also transport the hot air to the second preheating chamber and the first preheating chamber through the horizontal hot air pipe, making full use of the heat directly heated to the air medium, and having low energy consumption;

[0024] (2) In the composite aluminum aging furnace of the present invention, the aluminum material is preheated in multiple stages in the first preheating chamber (about 200°C) and the second preheating chamber (about 400°C), and then heated to about 600°C in the direct heating chamber. The composite aluminum aging furnace adopts a combination of direct heating and medium heat transfer (hot air). The presence of the first preheating chamber and the second preheating chamber greatly improves the overall processing efficiency of the composite aluminum aging furnace;

[0025] (3) In the composite aluminum aging furnace of the present invention, the presence of the air heat exchanger can not only reduce the temperature of the outlet air in the direct heating chamber so as to control the treatment temperature of the first preheating chamber and the second preheating chamber, but also increase the temperature of the external intake air. The external intake air is supplied to the direct heating chamber through the internal air supply pipe. The temperature of the external intake air is within a reasonable range to ensure that the temperature in the direct heating chamber is in a stable state, thereby ensuring the aging treatment effect in the direct heating chamber, and has great application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0027] Figure 1 A top view of the composite aluminum material aging furnace of the present invention;

[0028] Figure 2 to Figure 4 They are respectively top views of the first preheating chamber, the second preheating chamber and the direct heating chamber;

[0029] Figure 5 It is a front view of the composite aluminum material aging furnace of the present invention;

[0030] Figure 6 to Figure 8 They are front views of the first preheating chamber, the second preheating chamber and the direct heating chamber respectively;

[0031] Among them, 1-first preheating chamber, 11-first preheating chamber conveying wheel, 12-transfer conveying wheel, 13-preheating gas distributor, 2-second preheating chamber, 21-second preheating chamber conveying roller, 22-downward fan, 23-air heat exchanger, 24-distribution box, 25-heat exchange hot air duct, 26-air duct, 27-inward air supply pipe, 28-horizontal fan, 29-second preheating chamber horizontal hot air duct, 210-horizontal fan duct, 3-direct heating chamber, 31-direct heating chamber conveying roller, 32-gas distribution pipe, 33-gas burner, 34-furnace door, 35-direct heating chamber horizontal hot air duct. DETAILED DESCRIPTION

[0032] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0033] Example 1

[0034] A composite aluminum aging furnace, such as Figures 1 to 8 As shown, it includes a first preheating chamber 1, a second preheating chamber 2 and a direct heating chamber 3 which are arranged in sequence;

[0035] A plurality of first preheating chamber conveying wheels 11 are installed in the first preheating chamber 1 along the conveying direction of the aluminum material, and a preheating gas distributor 13 is installed on the top of the first preheating chamber 1. A transfer conveying wheel 12 is provided between the first preheating chamber 1 and the second preheating chamber 2, and the transfer conveying wheel 12 is fixedly installed at the outlet of the first preheating chamber 1;

[0036] The second preheating chamber 2 is connected to the direct heating chamber 3 as a whole, and a plurality of groups of second preheating chamber conveying rollers 21 are arranged in the second preheating chamber 2 along the conveying direction of the aluminum material, and a second preheating chamber horizontal hot air pipe 29 connected to the inner space of the second preheating chamber 2 is arranged on the top of the second preheating chamber 2, and a plurality of groups of direct heating chamber conveying rollers 31 are arranged in the direct heating chamber 3 along the conveying direction of the aluminum material, and a plurality of pairs of gas burners 33 are arranged on both sides of the direct heating chamber conveying rollers 31, and the gas burners 33 are connected to the gas distribution pipe 32 located outside the direct heating chamber 3, and a direct heating chamber horizontal hot air pipe 35 connected to the inner space of the direct heating chamber 3 is arranged on the top of the direct heating chamber 3, and the other end of the direct heating chamber horizontal hot air pipe 35 is connected to the second preheating chamber horizontal hot air pipe 29, and the second preheating chamber water The horizontal hot air duct 29 is connected to the horizontal fan 28 through the horizontal fan induced air duct 210. A heat exchange hot air duct 25 is installed on the horizontal hot air duct 29 of the second preheating chamber. The heat exchange hot air duct 25 is connected to the air inlet of the air heat exchanger 23. The other air inlet of the air heat exchanger 23 is connected to the induced air duct 26. The air outlet of the air heat exchanger 23 is connected to the air outlet pipe. A down fan 22 is installed on the air outlet pipe. The air outlet pipe is connected to the internal space of the second preheating chamber 2. The air outlet pipe is connected to the preheating gas distributor 13. The air outlet pipe is connected to the internal space of the direct heating chamber 3 through the inward air delivery pipe 27. The second preheating chamber 2 is equipped with a furnace door for closing its opening at the end away from the direct heating chamber 3. The direct heating chamber 3 is equipped with a furnace door 34 for closing its opening at the end away from the second preheating chamber 2.

[0037] The device further comprises a distribution box 24 , which is electrically connected to the down fan 22 and the horizontal fan 28 .

[0038] The heat source transfer process in the above composite aluminum aging furnace is as follows:

[0039] The gas burner in the direct heating chamber ignites the gas to generate heat, which heats the air in the direct heating chamber and performs aging heat treatment on the aluminum in the direct heating chamber. The horizontal fan is turned on, and the hot air in the direct heating chamber is discharged through the horizontal hot air duct of the direct heating chamber and the horizontal hot air duct of the second preheating chamber. After heat exchange with the air inhaled from the outside through the air heat exchanger (the down fan provides the suction power), the hot air is cooled and enters the second preheating chamber through the air outlet pipe. The temperature in the second preheating chamber rises, and the aluminum therein is preheated for the second time. The air inhaled from the outside is heated and sent to the direct heating chamber through the inward gas pipe, which provides sufficient oxygen for the direct heating chamber and ensures the combustion efficiency of the gas. At the same time, the hot air after heat exchange is sent to the first preheating chamber through the preheating gas distributor, and the aluminum therein is preheated for the first time.

[0040] The aluminum material is preheated in multiple stages in the first preheating chamber (about 200℃) and the second preheating chamber (about 400℃), and then heated to about 600℃ in the direct heating chamber to complete the aging treatment of the aluminum material. The aluminum material is heat treated section by section, each section has a short processing time, and the overall processing efficiency is high.

[0041] It has been verified that the composite aluminum aging furnace of the present invention has a reasonable structural design. The equipment uses the heat brought by the combustion of gas in the direct heating chamber as the heat source. It can not only perform aging heat treatment on the aluminum in the direct heating chamber, but also transport the hot air to the second preheating chamber and the first preheating chamber through the horizontal hot air pipe, making full use of the heat directly heated to the air medium, and has low energy consumption; the aluminum is preheated in multiple stages in the first preheating chamber (about 200°C) and the second preheating chamber (about 400°C), and then heated to about 600°C in the direct heating chamber. The composite aluminum aging furnace adopts The combination of direct heating and medium heat transfer (hot air) and the presence of the first preheating chamber and the second preheating chamber greatly improve the overall processing efficiency of the composite aluminum aging furnace; the presence of the air heat exchanger can not only reduce the temperature of the outlet air in the direct heating chamber so as to control the processing temperature of the first preheating chamber and the second preheating chamber, but also increase the temperature of the external intake air. The external intake air is supplied to the direct heating chamber through the inward air pipe. Its temperature can ensure that the temperature in the direct heating chamber is in a stable state within a reasonable range, thereby ensuring the aging treatment effect in the direct heating chamber, which has great application prospects.

[0042] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0043] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A composite aluminum aging furnace, characterized in that: It includes a first preheating chamber, a second preheating chamber and a direct heating chamber which are arranged in sequence; A plurality of first preheating chamber conveying wheels are installed in the first preheating chamber along the conveying direction of the aluminum material, and a preheating gas distributor is installed on the top of the first preheating chamber; The second preheating chamber is connected to the direct heating chamber as a whole, a plurality of groups of second preheating chamber conveying rollers are arranged in the second preheating chamber along the conveying direction of the aluminum material, a second preheating chamber horizontal hot air duct connected to the inner space of the second preheating chamber is arranged on the top of the second preheating chamber, a plurality of groups of direct heating chamber conveying rollers are arranged in the direct heating chamber along the conveying direction of the aluminum material, a plurality of pairs of gas burners are arranged on both sides of the direct heating chamber conveying rollers, the gas burners are connected to the gas distribution pipe located outside the direct heating chamber, a direct heating chamber horizontal hot air duct connected to the inner space of the direct heating chamber is arranged on the top of the direct heating chamber, the other end of the direct heating chamber horizontal hot air duct is connected to the second preheating chamber horizontal hot air duct, the second preheating chamber horizontal hot air duct is connected to the horizontal fan through the horizontal fan induced draft duct, and the second preheating chamber horizontal hot air duct is connected to the preheating gas distributor.

2. A composite aluminum aging furnace according to claim 1, characterized in that: The direct heating chamber is provided with a furnace door for closing its opening at the end away from the second preheating chamber; The second preheating chamber is provided with a furnace door for closing its opening at the end away from the direct heating chamber.

3. A composite aluminum aging furnace according to claim 1, characterized in that: A heat exchange hot air pipe is installed on the horizontal hot air pipe of the second preheating chamber; The heat exchange hot air pipe is connected to the air inlet of the air heat exchanger, the other air inlet of the air heat exchanger is connected to the air duct, the air outlet of the air heat exchanger is connected to the air outlet pipe, a down fan is installed on the air outlet pipe, and the air outlet pipe is connected to the internal space of the second preheating chamber.

4. A composite aluminum material aging furnace according to claim 3, characterized in that: Also includes distribution box; The distribution box is electrically connected to the downwind fan and the horizontal fan respectively.

5. The composite aluminum material aging furnace according to claim 3, characterized in that: The gas outlet pipe is connected with the preheating gas distributor.

6. The composite aluminum material aging furnace according to claim 3, characterized in that: The air outlet pipe is communicated with the inner space of the direct heating chamber through the inward air supply pipe.

7. The composite aluminum material aging furnace according to claim 1, characterized in that: A transfer conveying wheel is provided between the first preheating chamber and the second preheating chamber, and the transfer conveying wheel is fixedly installed at the outlet of the first preheating chamber.

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