All-fiber tubular heating furnace

Abstract

The utility model discloses an all-fiber tube type heating furnace, and belongs to the technical field of industrial heating equipment. The heating furnace comprises a furnace body, a graphite storage box is arranged on one side of the furnace body, a spraying mechanism and a wire guide mechanism are arranged above the graphite storage box, the graphite storage box is communicated with the spraying mechanism, and the wire guide mechanism penetrates through the middle of the spraying mechanism; a furnace lining is arranged on the inner wall of the furnace body and is of an all-fiber structure, a high-temperature curing agent layer is sprayed on the surface of the furnace lining, a furnace tube and an electric heating element are further arranged in the furnace body, and the electric heating element is arranged on the inner side of the furnace lining. The resistance wires are wound on the ceramic rods, heat exchange is carried out through the pipe walls of the ceramic rods, the large heat exchange area and the good heat transfer effect are achieved, rapid and uniform heating can be achieved, the efficiency in the heating process and the uniformity of the furnace temperature are ensured, and the heating efficiency is improved. And the ceramic rod is fixed by the ceramic screw, so that the installation mode is convenient to maintain and low in failure rate.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial heating equipment, and more specifically to an all-fiber tube-type heating furnace. Background Art

[0002] The all-fiber tubular heating furnace is widely used in heat treatment processes of steel and non-ferrous metals, such as annealing and normalizing. Its efficient heat conduction performance and furnace temperature uniformity help improve the mechanical properties and microstructure of metal materials to meet different process requirements. The all-fiber tubular heating furnaces on the market still have many shortcomings, such as: poor environmental performance, some traditional heating furnaces will produce a large amount of pollutants during operation, such as waste gas, waste slag, etc., which put great pressure on the environment, and slow heating speed: due to the strong heat storage capacity of the heavy furnace lining, the heating furnace needs to consume a lot of time and energy during the startup and heating process, affecting production efficiency. In view of this, we propose a all-fiber tubular heating furnace. Utility Model Content

[0003] The purpose of the present utility model is to provide a full-fiber tubular heating furnace to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A full-fiber tubular heating furnace comprises a furnace body, a graphite storage box is provided on one side of the furnace body, a spray mechanism and a wire guide mechanism are provided above the graphite storage box, the graphite storage box is connected to the spray mechanism, and the wire guide mechanism passes through the middle of the spray mechanism;

[0006] The inner wall of the furnace body is provided with a furnace lining, which is a full-fiber structure, and the surface of the furnace lining is sprayed with a high-temperature curing agent layer. The furnace body is also provided with furnace tubes and electric heating elements, and the electric heating elements are arranged on the inner side of the furnace lining;

[0007] The electric heating element consists of multiple groups of porcelain rods and resistance wires, and the resistance wires are wound on the porcelain rods.

[0008] Preferably, the electric heating element is laid on the inner wall side of the furnace body, and the furnace tube passes through the middle of the electric heating element and extends along the length direction of the furnace body.

[0009] Preferably, the porcelain rod is mounted in the furnace body by means of ceramic screws.

[0010] Preferably, a graphite stirring circulation system is provided in the graphite storage box.

[0011] Preferably, the furnace lining is made of aluminum silicate refractory fiber wool, and the furnace lining is fixed to the furnace body by riveting.

[0012] Preferably, the rivet is made of heat-resistant round steel.

[0013] Preferably, the furnace body is further provided with a temperature control system, which is electrically connected to the electric heating element.

[0014] Preferably, the temperature control system adopts a PID intelligent temperature program control system.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The utility model is a ceramic rod wound with a resistance wire, and heat exchange is carried out through the ceramic rod tube wall, which has a large heat exchange area and good heat transfer effect, can achieve fast and uniform heating, and ensure the efficiency and furnace temperature uniformity during the heating process. In addition, the ceramic rod is fixed with ceramic screws. This installation method is easy to maintain and has a low failure rate.

[0017] (2) The present invention sprays graphite emulsion onto the surface of the wire by providing a spray mechanism, thereby reducing friction and wear between the wire and other contact surfaces during transportation. A graphite stirring circulation system is provided in the graphite storage box 2 to stir the graphite material, ensuring its uniform distribution and realizing the recycling of the graphite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the all-fiber tubular heating furnace of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the furnace body of the present invention.

[0020] Explanation of the numbers in the figure: 1. furnace body; 2. graphite storage box; 3. spray mechanism; 4. wire guide mechanism; 5. furnace tube; 6. electric heating element. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example:

[0023] See also Figure 1-2A full-fiber tubular heating furnace includes a furnace body 1, a graphite storage box 2 is provided on one side of the furnace body 1, a spray mechanism 3 and a wire guide mechanism 4 are provided above the graphite storage box 2, the wire guide mechanism 4 is used to guide the wire rod to move according to a certain rule during linear operation, the graphite storage box 2 is connected to the spray mechanism 3, graphite emulsion is stored in the graphite storage box 2, and the wire guide mechanism 4 passes through the middle of the spray mechanism 3; when the wire passes through the wire guide mechanism 4 above the graphite storage box 2, the spray mechanism 3 will spray graphite emulsion onto the surface of the wire, so that the graphite emulsion adheres to the surface of the wire, reducing the friction and wear between the wire and other contact surfaces during the wire transportation process.

[0024] The furnace body 1 is a steel structure: the steel skeleton is constructed using appropriate profiles and steel plates welded together according to mechanical principles. This ensures a strong, secure, durable, and reliable structure. All welds are even and smooth, free of defects such as pores, slag inclusions, and incomplete fusion. The furnace body's appearance is straight and aesthetically pleasing, without wrinkles or unevenness. The outer cover plates are constructed of hot-rolled steel and secured with large-cap screws, facilitating partial disassembly and maintenance, resulting in an overall aesthetically pleasing appearance.

[0025] The inner wall of the furnace body 1 is provided with a furnace lining, which is a full-fiber structure and a high-temperature curing agent layer is sprayed on the surface of the furnace lining. The furnace body 1 is also provided with a furnace tube 5 and an electric heating element 6, which is arranged on the inner side of the furnace lining.

[0026] Among them, the furnace lining adopts aluminum silicate refractory fiber cotton, and the furnace lining is fixed in the furnace body 1 by rivets, and the rivets are made of heat-resistant round steel. Specifically, the furnace lining adopts standard aluminum silicate refractory fiber cotton, which is mechanically folded and compressed to form, and then constructed by standard rivets and reasonable installation methods. The fiber folding block is pre-compressed again before installation (compressed bulk density ≥ 230Kg / m3). The structure has low thermal conductivity, low thermal solubility, excellent chemical stability, thermal stability, thermal vibration resistance, excellent tensile strength and corrosion resistance. The material of the rivets in key parts is heat-resistant round steel. After the lining is completed, a layer of high-temperature curing agent is sprayed on the surface to form a heat-insulating wall, which increases the strength and thermal radiation performance of the lining surface, and further reduces the heat storage loss of the lining, achieving the effect of rapid heating and maximizing the thermal efficiency of the furnace.

[0027] In the present application, the electric heating element 6 is laid on the inner wall of the furnace body 1, the furnace tube 5 passes through the middle of the electric heating element 6 and extends along the length direction of the furnace body 1, and the electric heating element 6 is surrounded between the furnace tube 5 and the furnace lining, which not only maximizes the use of the space in the furnace body, but also forms a compact and efficient heating structure, improves the heating effect of the electric heating element, and helps to maintain the stability and uniformity of the temperature in the furnace body, thereby optimizing the overall heat treatment process.

[0028] Wherein, the electric heating element 6 is made up of many groups of porcelain rods and resistance wire, and the resistance wire is wound on the porcelain rods, and each porcelain rod is installed in the body of heater 1 by ceramic screws, that is, each porcelain rod is installed independently. By accurately winding the resistance wire respectively on many groups of porcelain rods, and each group of porcelain rods is fixed with ceramic screws respectively, not only the stability and durability of the electric heating element are guaranteed, but also the follow-up maintenance work is greatly facilitated, and the possibility of malfunction is reduced. Specifically, because the combined structure of porcelain rod and resistance wire is compact and stable, they can withstand the effect of high temperature and electric current together, thereby providing a lasting and uniform heating effect. Simultaneously, adopting ceramic screws to fix not only enhances the firmness of installation, but also makes it possible to disassemble and reinstall easily when needing to repair or replace the electric heating element, and only needs to replace the porcelain rod with fault separately, without the need for overall replacement, which greatly improves the convenience and efficiency of maintenance. The installation method of this electric heating element not only guarantees the stable operation of the body of heater, but also effectively reduces the failure rate during long-term use.

[0029] In this application, a graphite stirring and circulating system is provided within the graphite storage box 2. The system comprises a stirring module and a circulation module. The stirring module stirs the graphite material to ensure its uniform distribution. The graphite material within the graphite storage box 2 is sprayed onto the surface of the wire material via a spray mechanism 3. The circulation module: This enables the recycling of graphite materials, improves material utilization efficiency, and reduces production costs.

[0030] In this application, the furnace body 1 is also equipped with a temperature control system, which is electrically connected to the electric heating element 6. The temperature control system utilizes a PID intelligent temperature program control system. For temperature control, an advanced PID intelligent temperature program control system is employed. This system precisely controls the continuous output of a solid-state controllable integrated power regulation module, ensuring that the furnace temperature is maintained at an ideal state. This system offers high control accuracy and excellent furnace temperature uniformity, while also allowing for flexible power settings within a certain range to meet varying heating requirements.

[0031] For the temperature controller, a Yudian intelligent temperature controller was selected. It enables efficient setting and control of heating temperature, heating rate, and holding time, further enhancing the accuracy and flexibility of temperature control. The control system is also equipped with an audible and visual alarm function, as well as a safety and automatic power-off feature. These features ensure that in the event of high temperatures or abnormal conditions, the system will promptly issue an alarm and automatically cut off the power supply, effectively protecting equipment and personnel.

[0032] Working principle: When the present invention is in use, the wire to be heated is transported to the furnace tube 5 in the furnace body 1 through the wire guide mechanism 4. During the transportation process, the graphite material in the graphite storage box 2 is sprayed onto the surface of the wire through the spray mechanism 3, so that the graphite emulsion adheres to the surface of the wire, which can reduce the friction and wear between the wire and other contact surfaces during the transportation process. After the wire is fed into the furnace body 1, the temperature control system is used to control the electric heating element 6 to heat it to the target temperature, thereby achieving heating of the wire.

[0033] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A full-fiber tubular heating furnace, comprising a furnace body (1), characterized in that: A graphite storage box (2) is provided on one side of the furnace body (1), a spray mechanism (3) and a wire guide mechanism (4) are provided above the graphite storage box (2), the graphite storage box (2) is connected to the spray mechanism (3), and the wire guide mechanism (4) passes through the middle of the spray mechanism (3); The inner wall of the furnace body (1) is provided with a furnace lining, the furnace lining is a full-fiber structure, and a high-temperature curing agent layer is sprayed on the surface of the furnace lining. The furnace body (1) is also provided with a furnace tube (5) and an electric heating element (6), and the electric heating element (6) is arranged on the inner side of the furnace lining; The electric heating element (6) is composed of multiple groups of porcelain rods and resistance wires, and the resistance wires are wound on the porcelain rods.

2. The all-fiber tubular heating furnace according to claim 1, characterized in that: The electric heating element (6) is laid on the inner wall side of the furnace body (1), and the furnace tube (5) passes through the middle of the electric heating element (6) and extends along the length direction of the furnace body (1).

3. The all-fiber tubular heating furnace according to claim 1, characterized in that: Each of the porcelain rods is mounted in the furnace body (1) via a ceramic screw.

4. The all-fiber tubular heating furnace according to claim 1, characterized in that: A graphite stirring circulation system is provided in the graphite storage box (2).

5. The all-fiber tubular heating furnace according to claim 1, characterized in that: The furnace lining is made of aluminum silicate refractory fiber wool, and the furnace lining is fixed in the furnace body (1) by riveting.

6. The all-fiber tubular heating furnace according to claim 5, characterized in that: The rivet is made of heat-resistant round steel.

7. The all-fiber tubular heating furnace according to claim 1, characterized in that: The furnace body (1) is also provided with a temperature control system, and the temperature control system is electrically connected to the electric heating element (6).

8. The all-fiber tubular heating furnace according to claim 7, characterized in that: The temperature control system adopts a PID intelligent temperature program control system.

Images