Uniform-temperature process furnace

Abstract

The utility model relates to a uniform-temperature process furnace which comprises a furnace body shell, a hearth is arranged in the shell, a conveying chain is arranged in the hearth, burners are arranged on the side face of the hearth, burners are arranged at the front end, the rear end and the two sides of the hearth, the interior of the hearth is equally divided into a plurality of heating areas, and each heating area is provided with one burner. A plurality of circulating fans are installed at the lower ends of the furnace walls on the two sides of the hearth in the length direction, exhaust inlets of the circulating fans are located in the hearth, air outlets of the circulating fans face upwards and are provided with air deflectors, and the air deflectors extend upwards; a furnace top stirring fan is arranged at the top of the hearth; the temperature uniformity of each partition in the furnace is better, the heat absorptivity of a heated blank process is more uniform, and the quality and the consistency of products are favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating process furnaces, in particular to a temperature-uniform process furnace. Background Art

[0002] Some industrial production processes require heat treatment of materials in heating furnaces. Currently, conventional heat treatment furnaces have the following problems during the production process: 1. The billets are slowly moved in the furnace by a conveyor chain arranged in the furnace body to be heated and then transported out of the furnace. During this period, the temperature uniformity in the furnace is extremely strict, and the temperature in the existing process furnaces is uneven, which has a negative impact on the heating quality of the materials; 2. The atmosphere pressure in the furnace is unstable, and the burner is prone to flameout. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and to provide a temperature-uniform process furnace to improve the temperature uniformity in the furnace.

[0004] The specific scheme of the utility model is: a uniform temperature process furnace, including a furnace body shell, a furnace chamber is arranged in the shell, a conveyor chain is arranged in the furnace chamber, burners are arranged on the sides of the furnace chamber, burners are arranged at the front end, rear end and both sides of the furnace chamber, the furnace chamber is evenly divided into a plurality of heating zones, and each heating zone is provided with a burner; a plurality of circulation fans are installed along the length direction of the lower ends of the furnace walls on both sides of the furnace chamber, the air intake of the circulation fan is located in the furnace chamber, the air outlet is upward and is provided with an air guide plate, and the air guide plate extends upward; a furnace top stirring fan is provided on the top of the furnace chamber.

[0005] Furthermore, each heating zone is provided with a temperature sensor, which is connected to the control valve signal of the corresponding burner, and the opening of the control valve is automatically adjusted by the controller.

[0006] Furthermore, the outer shell of the circulating fan is provided with a heat storage wind box, the heat storage wind box is provided with an air duct, and the air guide plate is arranged on the air duct.

[0007] Furthermore, the inner wall of the furnace shell is provided with a fire-resistant insulation layer.

[0008] Furthermore, steel plates are provided on both sides of the fire-resistant heat-insulating layer, and the fire-resistant heat-insulating layer is arranged in the interlayer of the steel plates on both sides.

[0009] Furthermore, the air guide plate is fixed to the inner wall of the furnace wall by fasteners.

[0010] The utility model has the following beneficial effects: the temperature uniformity of each zone in the furnace is better, the heat absorption of the heated blank is more uniform, which is conducive to improving product quality and consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1It is a front view of the structure of the utility model;

[0012] Figure 2 yes Figure 1 A top view of

[0013] Figure 3 yes Figure 1 AA view;

[0014] Figure 4 yes Figure 2 BB view;

[0015] In the figure: 1. Conveyor chain; 2. Furnace top stirring fan; 3. Temperature sensor; 4. Circulation fan; 5. Burner; 6. Heat storage wind box; 7. Air guide plate. DETAILED DESCRIPTION

[0016] See also Figure 1-4 , this embodiment provides a uniform temperature process furnace, including a furnace shell, a furnace chamber is provided in the furnace shell, a conveyor chain 1 is provided in the furnace chamber, a burner 5 is provided on the side of the furnace chamber, and burners 5 are provided at the front end, rear end and both sides of the furnace chamber. The burners 5 on both sides of the furnace wall are arranged in an opposite staggered manner. The furnace chamber is evenly divided into several heating zones, and each heating zone is provided with a burner 5; several circulation fans 4 are installed at the lower ends of the furnace walls on both sides of the furnace chamber along the length direction, and the air intake of the circulation fan 4 is located in the furnace chamber, and the air outlet is upward and equipped with an air guide plate 7, which extends upward; a furnace top stirring fan 2 is provided on the top of the furnace chamber.

[0017] Furthermore, each heating zone is provided with a temperature sensor 3, which is connected to the control valve signal of the corresponding burner 5. The controller automatically adjusts the opening of the control valve and automatically adjusts the flame size according to the set temperature to achieve the purpose of temperature balance in the furnace.

[0018] Furthermore, the circulation fan 4 is externally provided with a heat storage wind box 6, the heat storage wind box 6 is provided with an air duct, and the air guide plate 7 is arranged on the air duct.

[0019] Furthermore, the furnace shell is mainly composed of a steel section and an inner ring of stainless steel plates sandwiching a furnace lining of aluminum silicate ceramic fiber blanket.

[0020] Furthermore, steel plates are provided on both sides of the fire-resistant heat-insulating layer, and the fire-resistant heat-insulating layer is arranged in the interlayer of the steel plates on both sides.

[0021] Furthermore, the air guide plate 7 is fixed to the inner wall of the furnace wall by fasteners.

[0022] When the utility model is working, the material moves slowly in the furnace through the conveyor chain 1, and the burners 5 in each heating zone burn and heat the furnace. The circulating fan 4 in the furnace absorbs the hot air in the furnace and then sends it to the top of the conveyor chain 1 through the hot air channel and the air guide plate 7. The hot air sent by the circulating fan 4 to the furnace top is stirred more evenly by the furnace top stirring fan 2, and then the hot air flows to the material below, so that the temperature absorbed by the billet will be uniform.

[0023] The temperature of each heating zone is detected in real time by the temperature sensor 3. If the actual temperature is lower than the set range, the controller adjusts the valve opening of the corresponding burner 5 to increase, thereby increasing the flame and raising the temperature of the heating zone; if the actual temperature is higher than the set temperature range, the controller reduces the valve opening of the corresponding burner 5 to reduce the temperature of the zone to within the set range, thereby realizing automatic temperature control of each heating zone and further realizing uniform temperature distribution in the furnace.

Claims

1. A temperature-constant process furnace, comprising a furnace shell, a furnace chamber within the shell, a conveyor chain within the furnace chamber, and burners on the sides of the furnace chamber, characterized by: Burners are provided at the front end, rear end and both sides of the furnace, and the furnace is evenly divided into several heating zones, each of which is provided with a burner; several circulation fans are installed along the length direction at the lower ends of the furnace walls on both sides of the furnace, and the air suction port of the circulation fan is located in the furnace, and the air outlet is upward and equipped with an air guide plate, which extends upward; a top stirring fan is provided on the top of the furnace.

2. The temperature-consolidating process furnace according to claim 1, wherein: Each heating zone is equipped with a temperature sensor, which is connected to the control valve signal of the corresponding burner, and the opening of the control valve is automatically adjusted by the controller.

3. The temperature-consolidating process furnace according to claim 1, wherein: The outer sleeve of the circulating fan is provided with a heat storage wind box, the heat storage wind box is provided with an air duct, and the air guide plate is arranged on the air duct.

4. The temperature-consolidating process furnace according to claim 1, wherein: The inner wall of the furnace shell is provided with a fire-resistant insulation layer.

5. The temperature-consolidating process furnace according to claim 4, characterized in that: Steel plates are provided on both sides of the fire-resistant heat-insulating layer, and the fire-resistant heat-insulating layer is arranged in the interlayer of the steel plates on both sides.

6. The temperature-consolidating process furnace according to claim 1, characterized in that: The air guide plate is fixed to the inner wall of the furnace wall by fasteners.

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