Thin-strip air cushion suspension baking furnace for silicon steel

Abstract

The utility model discloses a thin-strip air cushion suspension baking furnace for silicon steel, and relates to the technical field of baking equipment. The baking furnace comprises a furnace shell, refractory materials, burners, an air cushion suspension fan, a furnace end, a smoke exhaust system and a chimney, the furnace shell is a supporting shell of the baking furnace, the refractory materials used for heat preservation and heat insulation of the baking furnace are lined in the furnace shell, and the burners providing heat sources for the baking furnace are installed in holes formed in the side face of the furnace shell. An air cushion suspension fan for providing suspension buoyancy for suspension of strip steel in the oven is installed in the oven shell, an oven frame for isolating the oven is installed at the front end of the oven shell, a smoke exhaust system is installed in the oven shell, the smoke exhaust system and a chimney are both located on the transmission side of the baking oven, and the smoke exhaust system is connected with the chimney. The air cushion suspension technology is adopted, strip steel plates are produced in a non-contact mode, surface quality defects are avoided, the effect of improving the surface quality of the strip steel is achieved, the economic value is improved, and the application prospect is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of baking equipment, in particular to an air cushion suspension baking furnace for a thin strip of silicon steel. Background Art

[0002] At present, the surface treatment baking furnace of strip steel products mainly bakes the surface coating of strip steel to achieve the effect of coating solidification or drying the surface moisture of strip steel. The ordinary baking furnace uses a rotating furnace roller to support the strip steel to run in the furnace. When the thickness of the strip steel is below 0.3mm, the furnace roller support will damage the softened strip steel or the surface coating of the strip steel, resulting in quality defects on the surface of the strip steel, affecting the sales price of the product. Based on this, it is particularly necessary to design a new type of air cushion suspension baking furnace for thin strips of silicon steel. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an air cushion suspension baking furnace for thin strips of silicon steel. It has a reasonable structural design, adopts air cushion suspension technology, produces strip steel plates without contact, does not produce surface quality defects, improves the surface quality of the strip, has strong practicality, and is easy to promote and use.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a thin strip air cushion suspension baking furnace for silicon steel, comprising a furnace shell, refractory materials, burners, an air cushion suspension fan, a furnace horn, a smoke exhaust system and a chimney, the furnace shell being the supporting outer shell of the baking furnace, the interior of the furnace shell being lined with refractory materials for heat insulation of the baking furnace, the side openings of the furnace shell being equipped with burners for providing a heat source for the baking furnace, the interior of the furnace shell being equipped with an air cushion suspension fan for providing buoyancy for the suspension of the strip in the furnace, a furnace horn for isolating the furnace being installed at the front end of the furnace shell, the interior of the furnace shell being equipped with a smoke exhaust system, the smoke exhaust system and the chimney being both located on the transmission side of the baking furnace, and the smoke exhaust system being connected to the chimney.

[0005] Preferably, the furnace shell is welded from 6mm thick carbon steel or stainless steel, has reinforcing ribs, is fixed to the ground or a steel structure platform through a base, and has a rectangular furnace door for the strip to pass through at the entry and exit position of the baking furnace.

[0006] Preferably, the refractory material is connected to the furnace shell by masonry along the four sides of the furnace shell, and the refractory material includes refractory bricks and refractory wool.

[0007] Preferably, the burner is fixed to the side of the furnace shell by screws in a flange manner, one end of the burner leads to the furnace, and the other end is connected to the gas pipeline. The burner can be replaced by a resistance belt.

[0008] Preferably, the air cushion suspension fan is fixed below the running strip steel inside the furnace shell, the bottom of the air cushion suspension fan is connected to the furnace shell, and the side is connected to the air pipe, and the gas source is air, nitrogen or other gases.

[0009] Preferably, one end of the smoke exhaust system is connected to the furnace inside the baking furnace through a pipe, and the other end is connected to the chimney. The smoke exhaust system is used to remove waste gas generated by the combustion of combustible gases inside the furnace or gases and moisture and other impurities such as volatile substances in the surface coating of the strip.

[0010] The beneficial effects of the utility model are as follows: the device adopts air cushion suspension technology to produce strip steel plates without contact, and will not produce surface quality defects, thereby achieving the effect of improving the surface quality of the strip steel, increasing the economic value, and having broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is described in detail below with reference to the accompanying drawings and specific implementation methods;

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 Top view of the . DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0015] Reference Figure 1-2 The present specific implementation adopts the following technical scheme: an air cushion suspension baking furnace for thin strips of silicon steel, comprising a furnace shell 1, refractory materials 2, a burner 3, an air cushion suspension fan 4, a furnace stand 5, a smoke exhaust system 6 and a chimney 7. The furnace shell 1 is a supporting outer shell of the baking furnace. The furnace shell 1 has a rectangular furnace door for the strip to pass through at the position of entering and exiting the baking furnace. The interior of the furnace shell 1 is lined with refractory materials 2, and the refractory materials 2 are connected to the furnace shell 1 by masonry along the four sides of the furnace shell 1. The side opening of the furnace shell 1 is equipped with a burner 3, and the burner 3 is fixed to the side of the furnace shell 1 by screws in a flange manner. One end of the burner 3 leads to the furnace, and the other end is connected to the gas pipeline. An air cushion suspension fan 4 is installed inside the furnace shell 1, and a furnace stand 5 is installed at the front end of the furnace shell 1. A smoke exhaust system 6 is installed inside the furnace shell 1, and the smoke exhaust system 6 is connected to the chimney 7.

[0016] In this specific embodiment, the furnace shell 1 supports the entire baking furnace body. The furnace shell 1 is made of 6mm thick carbon steel or stainless steel through welding. The furnace shell has reinforcing ribs. The furnace shell 1 is fixed to the ground or steel structure platform through a base. The refractory material 2 lined inside the furnace shell 1 is used for heat insulation of the baking furnace. The refractory material 2 includes refractory bricks and refractory wool. The burner 3 is installed on the side of the furnace shell 1 as a heating element to provide a heat source for the baking furnace. It can be combustible gas heating or electric heating. The burner 3 can be replaced by a heating element such as a resistance belt. The furnace 5 installed at the front end of the furnace shell 1 is used to partition the furnace. The furnace 5 is located between the drying section and the sintering section of the furnace. The front end is connected to the drying section, and the rear end is connected to the sintering section. The furnace 5 allows the furnace to be controlled in different zones according to different temperature or atmosphere conditions. The smoke exhaust system 6 inside the furnace shell 1 is located on the transmission side of the baking furnace. The smoke exhaust system 6 is used to remove waste gas generated by the combustion of combustible gas inside the furnace or gases and moisture and other impurities such as volatile substances in the surface coating of the strip. One end of the smoke exhaust system 6 is connected to the furnace inside the baking furnace through a pipeline, and the other end is connected to a chimney 7. The chimney 7 is located on the transmission side of the baking furnace. The chimney 7 is used to discharge waste gas generated by combustion inside the furnace or volatile substances or moisture volatilized from the surface of the strip.

[0017] This specific embodiment adopts air cushion suspension technology, and the air cushion suspension fan 4 is fixed under the running strip steel inside the furnace shell 1 according to the design requirements. The bottom of the air cushion suspension fan 4 is connected to the furnace shell 1, and the side is connected to the air pipe. The gas source is air or nitrogen. The baking furnace provides suspension buoyancy for the strip steel in the furnace through the air cushion suspension fan 4, and the buoyancy relies on the upward pressure provided by the gas to drag the strip steel.

[0018] This specific implementation method uses an air cushion suspension fan to calculate the air volume of the air cushion fan required for thin-strip silicon steel products of different specifications through precise calculation and experimental data analysis accumulation. Its working principle is: the gas generated by the air cushion suspension fan in the baking furnace is used to drag the strip to run in the furnace. Through fluid mechanics calculations, the air cushion suspension fan is arranged in different positions in the baking furnace and the cooling section; when the strip enters the furnace, the fan calculates the required suspension air volume according to the different specifications of the strip, and relies on the wind of the air volume to drag the strip forward. During the strip production operation process, no objects come into contact with the strip surface.

[0019] In this specific implementation method, the air cushion fan floats the steel strip instead of the traditional method of using transmission rollers to drag the steel strip. In the baking furnace, there is no roller surface or other objects in contact with the steel strip, and no surface quality defects will occur. The surface quality of the produced plates is good, which achieves the effect of improving the surface quality of the steel strip, effectively increasing the economic value, creating economic benefits, and has broad market application prospects.

[0020] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An air cushion suspension baking furnace for silicon steel thin strips, characterized in that: The invention comprises a furnace shell (1), refractory materials (2), a burner (3), an air cushion suspension fan (4), a furnace horn (5), a smoke exhaust system (6) and a chimney (7). The furnace shell (1) is a supporting outer shell of a baking furnace. The interior of the furnace shell (1) is lined with refractory materials (2) for heat insulation of the baking furnace. The side opening of the furnace shell (1) is provided with a burner (3) for providing a heat source for the baking furnace. The interior of the furnace shell (1) is provided with an air cushion suspension fan (4) for providing buoyancy for suspending the steel strip in the furnace. The front end of the furnace shell (1) is provided with a furnace horn (5) for isolating the furnace. The interior of the furnace shell (1) is provided with a smoke exhaust system (6). The smoke exhaust system (6) and the chimney (7) are both located on the transmission side of the baking furnace. The smoke exhaust system (6) is connected to the chimney (7).

2. The air cushion suspension baking furnace for silicon steel thin strip according to claim 1, characterized in that: The furnace shell (1) is welded from 6 mm thick carbon steel or stainless steel. The furnace shell (1) has reinforcing ribs. The furnace shell (1) is fixed on the ground or a steel structure platform through a base.

3. The silicon steel thin strip air cushion suspension baking furnace according to claim 1, characterized in that: The furnace shell (1) is provided with a rectangular furnace door for the steel strip to pass through at the position of entering and exiting the baking furnace.

4. The silicon steel thin strip air cushion suspension baking furnace according to claim 1, characterized in that: The refractory material (2) is connected to the furnace shell (1) by masonry along the four sides of the furnace shell (1), and the refractory material (2) includes refractory bricks and refractory wool.

5. The silicon steel thin strip air cushion suspension baking furnace according to claim 1, characterized in that: The burner (3) is fixed to the side of the furnace shell (1) by screws in a flange manner. One end of the burner (3) leads to the furnace, and the other end is connected to the gas pipeline.

6. The silicon steel thin strip air cushion suspension baking furnace according to claim 1, characterized in that: The burner (3) can be replaced by a resistance belt.

7. The air cushion suspension baking furnace for silicon steel thin strip according to claim 1, characterized in that: The air cushion suspension fan (4) is fixed below the running strip steel inside the furnace shell (1); the bottom of the air cushion suspension fan (4) is connected to the furnace shell (1), and the side is connected to the air pipe.

8. The air cushion suspension baking furnace for silicon steel thin strip according to claim 1, characterized in that: One end of the smoke exhaust system (6) is connected to the furnace inside the baking furnace through a pipeline, and the other end is connected to the chimney (7).

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