Aging oven with air circulation system

Abstract

The utility model relates to an aging oven with an air circulation system, which comprises a box body, a trolley for placing aluminum products is arranged in a heat treatment chamber on the box body, partition plates are respectively arranged on the top surface and the bottom surface of the trolley, cavities are arranged in the partition plates, and through holes are arranged on opposite surfaces of the two partition plates. The side wall of the box body is hollow, an air conveying pipe is arranged in the box body, the head end and the tail end of the air conveying pipe are connected with the back faces of the two partition plates respectively and extend into the cavity, and an exhaust fan and a heater are further arranged on the air conveying pipe; the thermal field uniformity of the thermal treatment chamber can be prevented from being affected by too high local air circulation speed, air in the whole thermal treatment chamber can be effectively driven to circulate in a negative pressure adsorption mode, the temperature of internal circulating air flow is monitored in real time through an air conveying pipe and a temperature sensor in the furnace, and the thermal field uniformity of the thermal treatment chamber is guaranteed. Therefore, real-time adjustment is carried out, and it is ensured that the aluminum products in the furnace are in a qualified and stable temperature field all the time.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy manufacturing, and particularly relates to an aging furnace with a wind circulation system. Background Art

[0002] Due to the characteristics of aluminum such as light weight, high strength, weather resistance, good formability and renewability, the application of aluminum has been continuously increasing. This trend is particularly obvious in the automotive industry, household appliances and construction industry, where there is a great demand for aluminum with complex shapes and high strength.

[0003] In the process of aluminum alloy production, an aging furnace is often used to further process aluminum products. In order to effectively utilize the hot air inside the existing aging furnace, a circulation air duct is arranged inside, that is, a single air duct blower is used to make the internal air flow circulate and transport. However, in the actual use process, the air duct of the blower is small and the position is fixed, so it is easy for the driven air flow circulation to have dead corners. Moreover, when the hot air blower heats the air, it is easy to make the surface of the aluminum product close to one side of the air duct have a different temperature from other surfaces, thereby destroying the uniformity of the temperature field inside the heat treatment chamber and resulting in uneven surface hardness of the product. Summary of the Utility Model

[0004] Based on the above description, the utility model provides an aging furnace with a wind circulation system to solve the disadvantages that the single air duct blowing adopted by the existing aging furnace has a small coverage range, and during the air heating process, the surface temperature of the aluminum product close to one side of the air duct is different from other surfaces, thereby destroying the uniformity of the internal temperature field and resulting in uneven surface hardness of the product.

[0005] The utility model is realized by the following technical solutions:

[0006] An aging furnace with a wind circulation system includes a box body. Inside the heat treatment chamber on the box body, there is a trolley for placing aluminum products. Partition plates are respectively arranged on the top surface and the bottom surface of the trolley. Cavities are arranged inside the partition plates, and through holes are arranged on the opposite surfaces of the two partition plates. The side wall of the box body is hollow and an air delivery pipe is arranged inside. The head and tail ends of the air delivery pipe are respectively connected to the back surfaces of the two partition plates and extend into the cavities. A suction fan and a heater are also arranged on the air delivery pipe.

[0007] Further, vertical support frames are arranged on the four sides of the top surface of the trolley. A metal basket is arranged at the center of the support frames. There is a spacing between the bottom surface of the metal basket and the top surface of the trolley. An opening is also arranged on the top surface of the trolley and is exactly arranged directly below the metal basket. Rollers are respectively equipped at the four corners of the bottom surface of the trolley.

[0008] Further, a plurality of through holes are provided, and the cavity inside the partition is arranged in an inverted conical shape. The plurality of through holes extend downward and communicate with the cavity.

[0009] Further, a connecting end is provided at the bottom of the partition. The top of the connecting end is exactly communicated with the center of the bottom surface of the cavity, and the other end of the connecting end is hermetically inserted and fixed with one end of the air delivery pipe.

[0010] Further, a display screen is provided on the surface of the box body. Temperature sensors are provided inside the heat treatment chamber of the box body and on the air delivery pipe, and the temperature sensors are electrically connected to the display screen.

[0011] Further, heat insulation cotton is filled inside the side wall of the box body, and the heat insulation cotton is closely attached to the outer wall of the air delivery pipe.

[0012] Further, only one exhaust fan and one heater are arranged. The exhaust fan is arranged at the connection of the bottom partition and the air delivery pipe, and the heater is arranged at the connection of the top partition and the air delivery pipe. Moreover, the heater is also electrically connected to the display screen.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0014] 1. Based on the existing aging furnace, the present application is improved by changing the blowing type to the suction type structure. It can not only avoid affecting the temperature field uniformity of the heat treatment chamber due to too fast local air circulation speed, but also expand the adsorption range through the negative pressure adsorption method, without dead corners of air circulation, thereby effectively driving the air inside the entire heat treatment chamber to circulate and further improving the temperature uniformity in the furnace.

[0015] 2. In the present application, the temperature of the internal circulating air flow can also be monitored in real time through the air delivery pipe and the temperature sensors in the furnace, so as to adjust it in real time, ensure that the aluminum products in the furnace are always in a qualified and stable temperature field, and enable the product hardness to meet the process requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the box body and the trolley in this embodiment;

[0017] Figure 2 It is a schematic structural diagram of the trolley in this embodiment;

[0018] Figure 3 It is a schematic diagram of the air delivery structure in this embodiment;

[0019] Figure 4 It is a schematic structural diagram of the partition in this embodiment;

[0020] Figure 5This is the structural schematic diagram of the gas pipeline in this embodiment;

[0021] Among them: 1. Box body; 11. Thermal insulation cotton; 12. Partition board; 13. Cavity; 2. Trolley; 21. Metal basket; 3. Gas pipeline; 4. Exhaust fan; 5. Heater; 6. Temperature sensor; 7. Display screen. Specific implementation mode

[0022] To facilitate the understanding of this application, the following will describe this application more comprehensively with reference to the relevant attached drawings. Embodiments of this application are given in the attached drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] Combined with Figures 1-5 As shown, an aging furnace with a wind circulation system includes:

[0025] The box body 1, which is the outer shell of the aging furnace, is provided with a heat treatment chamber at its center, mainly used to heat the inside of the heat treatment chamber through hot air, so as to maintain a stable temperature field inside it for processing aluminum products;

[0026] The trolley 2, used to prevent the trolley of aluminum products and placed inside the heat treatment chamber, is respectively provided with rollers at the four corners of its bottom. The rollers can be universal wheels for easy picking and placing;

[0027] The gas pipeline 3 is arranged inside the side wall of the box body 1, and through its head and tail ends, the air inside the box body 1 is circulated and transported;

[0028] The exhaust fan 4 is arranged on the gas pipeline 3 to control the conveying speed of the air inside the heat treatment chamber;

[0029] The heater 5 is arranged on the gas pipeline 3 to control the temperature of the air inside the treatment chamber.

[0030] Specifically; in this embodiment, there is also a partition board 12 inside the heat treatment chamber of the box body 1. Two partition boards 12 are provided and are respectively arranged on the inner top surface and inner bottom surface of the heat treatment chamber. And there is a cavity 13 inside the partition board 12. One of its opposite sides is provided with through holes, and the other side is provided with connection ends. Both the through holes and the connection ends are communicated with the inside of the cavity 13.

[0031] A number of through holes are provided and arranged in a circumferential array or a rectangular array, mainly used to expand the range of its adsorption and gas transmission, thereby increasing the coverage of the interior of the heat treatment chamber, ensuring that all the air inside the heat treatment chamber can be effectively driven to circulate.

[0032] The cavity 13 should be arranged in an inverted conical structure and its bottom end should communicate with the connection end. One end of the air delivery pipe 3 is inserted into the cavity 13 along the connection end, and the connection part is sealed with a gasket.

[0033] In the above structure, the air inside the box body 1 circulates to the air delivery pipe 3 through the bottom partition 12, and then is conveyed into the top partition 12. The hot air is quickly discharged into the box body 1 through the through holes on its bottom surface, forming a circulating air duct.

[0034] In the above structure, the exhaust fan 4 should be arranged at the connection between the bottom partition 12 and the air delivery pipe 3 to enhance the air suction effect. Compared with the general blowing structure, the air flow of this air suction structure is relatively gentle, will not cause the local flow speed to be too fast, and there is no adsorption dead angle, which can effectively cover all corners inside the heat treatment chamber.

[0035] During actual use, the bottom surface of the aluminum product also needs to be in contact with the hot air to ensure that the hardness of its bottom surface is the same as that of other surfaces. Therefore, in this embodiment, four support frames are vertically arranged on the top surface of the trolley 2. The four support frames form a rectangular structure, and a metal basket 21 is provided at the center. The metal basket 21 is made of a metal mesh. The aluminum product is placed inside the metal basket 21, and there should be a gap between the bottom surface of the metal basket 21 and the top surface of the trolley 2. A rectangular opening is also provided at the center of the top surface of the trolley 2. Therefore, part of the air flow will converge into the bottom partition 12 through this opening. When the air flow passes through this area, the hot air will directly contact the bottom surface of the aluminum product through the metal mesh.

[0036] Since the aging furnace needs to maintain a constant temperature, and during actual use, a certain amount of heat will be lost during the heating of the aluminum product and the air circulation process. Therefore, in this embodiment, temperature sensors 6 should be arranged at the heat treatment chamber of the box body 1 and the connection parts of the air delivery pipe 3 and the partition 12.

[0037] Among them, the temperature sensors 6 located on the air delivery pipe 3 are respectively used to measure the temperature flowing out of the heat treatment chamber and the temperature input into the heat treatment chamber, while the temperature sensor located in the heat treatment chamber is used to measure the temperature inside it.

[0038] On the surface of the box body 1, there is also a display screen 7. The interior of the display screen 7 should be equipped with a PLC single-chip microcomputer, and the display screen 7 is electrically connected to all the temperature sensors 6, the exhaust fan 4, and the heater 5. By coordinating the wind speed of the exhaust fan 4, the stability of the internal air flow transportation is maintained. On this basis, based on the temperature detected by the temperature sensor 6, the heater 5 is controlled to maintain the constant temperature state inside the heat treatment chamber. The above temperature control structure can be set based on the temperature control structure of the XMT-181 temperature controller.

[0039] The display screen 7 displays all the detected temperatures. The staff can, through the displayed data, understand the heat consumed by the internal heat in the air duct under the condition of a constant wind speed, as well as the specific heat consumption under different wind speeds, so as to further explore and improve the internal structure of the aging furnace in the future.

[0040] In addition, the aging furnace should also be provided with a heat insulation structure, that is, a large amount of heat insulation cotton 11 is filled inside its side wall and is closely attached to the outer wall of the air duct to avoid excessive heat consumption and improve the internal heat utilization rate.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of the present invention.

Claims

1. An aging furnace with an air circulation system, characterized in that: The invention comprises a box body (1), wherein a trolley (2) for placing aluminum products is arranged in a heat treatment chamber on the box body (1), and partitions (12) are respectively arranged on the top and bottom surfaces of the trolley (2), wherein a cavity (13) is arranged inside the partitions (12), and through holes are arranged on the opposite sides of the two partitions (12), and the side wall of the box body (1) is hollow and an air supply pipe (3) is arranged inside, and the head and tail ends of the air supply pipe (3) are respectively connected to the back sides of the two partitions (12) and extend to the inside of the cavity (13), and the air supply pipe (3) is also provided with an exhaust fan (4) and a heater (5).

2. The aging furnace with an air circulation system according to claim 1, characterized in that: Support frames are vertically arranged on the four sides of the top surface of the trolley (2), and a metal basket (21) is arranged at the center of the support frame. A gap is left between the bottom surface of the metal basket (21) and the top surface of the trolley (2). The top surface of the trolley (2) is also provided with an opening and is arranged just below the metal basket (21). The four corners of the bottom surface of the trolley (2) are also respectively equipped with rollers.

3. The aging furnace with an air circulation system according to claim 1, characterized in that: A plurality of through holes are provided, and the cavity (13) inside the partition (12) is provided in an inverted cone shape, and a plurality of the through holes extend downward and are interconnected with the cavity (13).

4. The aging furnace with an air circulation system according to claim 3, characterized in that: A connecting end is provided at the bottom of the partition (12), the top of the connecting end is exactly connected to the center of the bottom surface of the cavity (13), and the other end of the connecting end is sealed and plugged and fixed to one end of the gas pipe (3).

5. The aging furnace with an air circulation system according to claim 1, characterized in that: A display screen (7) is provided on the surface of the box (1), and temperature sensors (6) are provided inside the heat treatment chamber of the box (1) and on the gas supply pipe (3), and the temperature sensors (6) are electrically connected to the display screen (7).

6. The aging furnace with an air circulation system according to claim 1, characterized in that: The interior of the side wall of the box body (1) is also filled with thermal insulation cotton (11), and the thermal insulation cotton (11) is tightly fitted to the outer wall of the gas transmission pipe (3).

7. The aging furnace with an air circulation system according to claim 5, characterized in that: Only one exhaust fan and one heater (5) are provided, wherein the exhaust fan is arranged at the connection between the bottom partition (12) and the gas supply pipe (3), and the heater (5) is arranged at the connection between the top partition (12) and the gas supply pipe (3), and the heater (5) is also electrically connected to the display screen (7).

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