Pressure compensation structure for discharge port of aluminum alloy heating furnace

Abstract

The utility model provides an aluminum alloy heating furnace discharge port pressure compensation structure which is arranged in a furnace body, the furnace body is provided with an external furnace wall and an internal heating area, the furnace wall is provided with a discharge port, an openable and closable furnace door is arranged outside the discharge port, the heating area is communicated with the discharge port, and the heating area is communicated with the furnace wall. A workpiece needing to be heated is placed in the heating area. The pressure compensation structure for the discharge port of the aluminum alloy heating furnace comprises an upper circulating air duct, a lower circulating air duct and a circulating fan, the upper circulating air duct and the lower circulating air duct are in butt joint with the upper end and the lower end of the communication position of the heating area and the discharge port respectively, and the circulating fan is connected with the upper circulating air duct and the lower circulating air duct. The pressure compensation structure for the discharge port of the aluminum alloy heating furnace can compensate the pressure near the discharge port, keep the air pressure of a heating area stable, prevent the conditions of air escape and air suction, ensure the product quality, reduce the energy consumption and improve the processing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy heating and heat treatment equipment, and more precisely to a pressure compensation structure for a discharge port of an aluminum alloy heating furnace. Background Art

[0002] Aluminum alloy heating process is mainly used to process aluminum alloy cranks, aluminum alloy wheels, pistons and other parts on automobiles, airplanes and motorcycles. The parts made by aluminum alloy heating process are lighter and stronger, so the application of aluminum alloy heating process is very extensive. Aluminum alloy heating furnace is a device for heating workpieces. It is a loosely sealed device, which inevitably causes gas leakage and air suction, which interferes with the environment in the furnace, increases energy consumption, and affects the processing quality.

[0003] Specifically, when the air pressure in the aluminum alloy heating furnace is too high, a large amount of high-temperature gas in the furnace will escape to the outside of the furnace, causing the deterioration of the working environment in the factory, increasing the difficulty of operation for the staff, and increasing fuel consumption, shortening the service life of the heating furnace. When the air pressure in the aluminum alloy heating furnace is too low, the outside cold air will enter the furnace body from the furnace door and various holes on the furnace body. This cold air will increase the air consumption, resulting in an increase in the amount of smoke in the furnace, and the cold air will cling to the surface of the furnace body, which will deteriorate the heat transfer conditions of the furnace gas and the furnace wall, resulting in a decrease in the furnace temperature, prolonging the heating time, and also increasing fuel consumption.

[0004] Among them, the furnace door at the discharge port of the aluminum alloy heating furnace often needs to be opened and closed, and the seal at the furnace door is usually not tight enough. Therefore, how to compensate for the pressure difference at the furnace door is the key to solving the above problems. In addition, there is a sharp turn between the heating zone and the circulating air duct of the aluminum alloy heating furnace. When the circulating air enters the heating zone, due to the influence of the circulating air pressure, it is easy to form eddies on both sides of the heating zone, causing the unheated circulating air to repeatedly pass through part of the heating zone space, resulting in the workpiece in this space. The temperature rises slowly and the temperature is low, which affects the workpiece processing effect and also causes increased energy consumption.

[0005] In summary, the art needs an air pressure compensation solution at the door of an aluminum alloy heating furnace to optimize heating performance, ensure product quality, reduce energy consumption and improve production efficiency. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide an aluminum alloy heating furnace discharge port pressure compensation structure, which is arranged between the heating zone and the discharge port of the aluminum alloy heating furnace to compensate for the pressure near the discharge port and ensure the stability of the air pressure inside the heating zone.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a pressure compensation structure for the discharge port of an aluminum alloy heating furnace, which is arranged in a furnace body, wherein the furnace body has an external furnace wall and an internal heating zone, the furnace wall is provided with a discharge port, an openable and closable furnace door is arranged outside the discharge port, the heating zone is connected with the discharge port, and a workpiece to be heated is placed inside the heating zone; the pressure compensation structure for the discharge port of the aluminum alloy heating furnace comprises an upper circulation air duct, a lower circulation air duct and a circulation fan, the upper circulation air duct and the lower circulation air duct are respectively connected to the upper and lower ends of the connection position between the heating zone and the discharge port, and the circulation fan is connected to the upper circulation air duct and the lower circulation air duct.

[0008] Preferably, the section where the heating zone is connected to the discharge port forms a pressure compensation zone, and the upper circulation air duct and the lower circulation air duct are connected to upper and lower ends of the pressure compensation zone respectively.

[0009] Preferably, one end of the pressure compensation zone that is connected to other sections of the heating zone has an inclined air guide plate, and the height of the air guide plate gradually increases in the direction toward the discharge port.

[0010] Preferably, a pressure compensation zone for protecting the workpiece is formed at the outlet of the heating furnace through the mechanical structure of the air guide plate, thereby ensuring uniform temperature of the workpiece.

[0011] Compared with the prior art, the advantages of the pressure compensation structure of the discharge port of an aluminum alloy heating furnace disclosed by the utility model are: the pressure compensation structure of the discharge port of the aluminum alloy heating furnace can compensate for the pressure near the discharge port, maintain the air pressure in the heating zone stable, prevent gas leakage and air suction, ensure product quality, reduce energy consumption and improve processing efficiency; the pressure compensation structure of the discharge port of the aluminum alloy heating furnace can avoid the generation of eddy currents on both sides of the heating zone, and improve the processing effect and efficiency of the workpiece at the end of the heating zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] like Figure 1 Shown is a schematic diagram of a pressure compensation structure for an aluminum alloy heating furnace discharge port according to the utility model. DETAILED DESCRIPTION

[0014] 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.

[0015] like Figure 1 As shown, the present application provides a pressure compensation structure for a discharge port of an aluminum alloy heating furnace arranged in a furnace body, the furnace body having an external furnace wall 1 and an internal heating zone 10, the furnace wall 1 having a discharge port 11, an openable and closable furnace door 111 being arranged outside the discharge port 11, the heating zone 10 being connected to the discharge port 11, a heating device being arranged in the heating zone 10, a workpiece 2 to be heated being placed inside the heating zone 10; the pressure compensation structure for the discharge port of the aluminum alloy heating furnace comprises an upper circulation air duct 12, a lower circulation air duct 13 and a circulation fan, the upper circulation air duct 12 and the lower circulation air duct 13 are respectively connected to the upper and lower ends of the connection position between the heating zone 10 and the discharge port 11, and the top end of the upper circulation air duct 12 is connected to the circulation fan, and the circulation fan is connected to the bottom end of the lower circulation air duct 13 through an external pipeline. When the circulating fan is working, the heating device in the heating zone 10 works at the same time, and the heated air is continuously circulated under the action of the circulating fan. At the same time, a pressurized compensation is formed between the heating zone 10 and the discharge port 11 to prevent the cold air entering from the furnace door 111 from reaching the heating zone 10, thereby keeping the air pressure in the heating zone stable, preventing gas leakage and air suction, ensuring product quality, reducing energy consumption and improving processing efficiency.

[0016] Specifically, the section where the heating zone 10 is connected to the discharge port forms a pressure compensation zone 100, and the upper circulation air duct 12 and the lower circulation air duct 13 are respectively connected to the upper and lower ends of the pressure compensation zone 100. The hot air in the heating zone 10 and the cold air at the discharge port 11 converge in the pressure compensation zone 100 and circulate under the action of the circulating fan to prevent cold air from entering the heating zone 10.

[0017] Specifically, the height of the pressure compensation zone 100 is greater than the height of other sections of the heating zone 10, and the height difference between the pressure compensation zone 100 and other sections of the heating zone 10 further prevents cold air from entering the heating zone. Furthermore, the end of the pressure compensation zone 100 that is connected to other sections of the heating zone 10 has an inclined air guide plate 101, and the height of the air guide plate 101 gradually increases in the direction toward the discharge port 11. By providing the air guide plate 101, the circulating air circulating into the pressure compensation zone 100 can be guided to prevent the formation of eddies in the pressure compensation zone 100, thereby improving the processing effect and efficiency of the workpiece at the end of the heating zone.

[0018] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure compensation structure for an aluminum alloy heating furnace discharge port, characterized in that: It is arranged in a furnace body, and the furnace body has an external furnace wall and an internal heating zone, the furnace wall is provided with a discharge port, an openable and closable furnace door is arranged outside the discharge port, the heating zone is connected with the discharge port, and the workpiece to be heated is placed inside the heating zone; the pressure compensation structure of the discharge port of the aluminum alloy heating furnace includes an upper circulation air duct, a lower circulation air duct and a circulation fan, the upper circulation air duct and the lower circulation air duct are respectively connected to the upper and lower ends of the connection position between the heating zone and the discharge port, and the circulation fan is connected to the upper circulation air duct and the lower circulation air duct.

2. The pressure compensation structure for the discharge port of the aluminum alloy heating furnace according to claim 1, characterized in that: The section where the heating zone is connected to the discharge port forms a pressure compensation zone, and the upper circulation air duct and the lower circulation air duct are connected to the upper and lower ends of the pressure compensation zone respectively.

3. The pressure compensation structure for the discharge port of the aluminum alloy heating furnace according to claim 2, characterized in that: One end of the pressure compensation zone that is connected to other sections of the heating zone is provided with an inclined air guide plate, and the height of the air guide plate gradually increases in the direction toward the discharge port.

4. The pressure compensation structure for the discharge port of the aluminum alloy heating furnace according to claim 3, characterized in that: Through the mechanical structure of the air guide plate, a pressure compensation zone is formed at the outlet of the heating furnace to protect the workpiece, thereby ensuring that the temperature of the workpiece is uniform.

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