Strip steel coating drying treatment device

Abstract

The utility model provides a strip steel coating drying processing device which comprises a drying furnace shell and two sets of infrared heating devices, the drying furnace shell is cylindrical, a strip steel inlet and a strip steel outlet are formed in the drying furnace shell, and strip steel is in a stretching state in the drying furnace shell and moves in the axial direction; the two groups of infrared heating devices are clamped on two sides of the strip steel, each group of infrared heating device comprises a plurality of rows of infrared combustors and an air circulating device, the plurality of rows of infrared combustors are arranged along the length direction of the strip steel, each infrared combustor releases infrared rays to the strip steel by combusting gas, and the air circulating device is used for circulating the infrared rays to the strip steel. And the air circulating device is used for circulating air near the strip steel coating and external air. A hot air heating device is replaced by the infrared heating device, cooling energy consumption after heating is low, energy consumption is saved, and cooling is fast.

Description

Technical Field

[0001] The utility model belongs to the field of metallurgical devices, and particularly relates to a strip coating drying and treating device. Background Art

[0002] The drying of strip coatings is an important process in carbon steel production, and the drying quality has a great influence on the product quality. The currently used drying method is hot air heating method, in which the steel base is heated by heating the steel base, and the heat-conducted steel base dries the moisture in the coating. The hot air heating efficiency is low. After the strip coating is dried, it takes a long time to cool down, consuming time and energy. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the utility model provides a strip coating drying and treating device, which replaces the hot air heating device with an infrared heating device, has low cooling energy consumption after heating, saves energy, and cools quickly.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] The utility model provides a strip coating drying and treating device, which includes a drying furnace shell and two groups of infrared heating devices. The drying furnace shell is cylindrical, and the drying furnace shell is provided with an inlet and an outlet for the strip. The strip is in a stretched state in the drying furnace shell and moves along the axial direction; the two groups of infrared heating devices are clamped on both sides of the strip. Each group of infrared heating devices includes multiple rows of infrared burners and an air circulation device. The multiple rows of infrared burners are arranged along the length direction of the strip, and each infrared burner releases infrared to the strip by burning gas. The air circulation device is used to circulate the air near the strip coating and the outside air.

[0006] Preferably, the number of the multiple rows of infrared burners is 6 rows, and the number of each row of infrared burners is 12.

[0007] Preferably, a gas pipeline is connected to the side of each infrared burner away from the strip, and the end of the gas pipeline away from the infrared burner is connected to a gas supply device.

[0008] Preferably, the air circulation device includes at least one set of air inlet / outlet channels, and the at least one set of air inlet / outlet channels is connected to an air circulation pump outside.

[0009] Preferably, the number of the at least one set of air inlet / outlet channels is two sets.

[0010] Preferably, the two sets of air inlet / outlet channels are arranged along the length direction of the strip. One set of air inlet / outlet channels is clamped on both sides of the three rows of infrared burners near the inlet, and the other set of air inlet / outlet channels is clamped on both sides of the three rows of infrared burners near the outlet.

[0011] Preferably, the air inlet channels and the air outlet channels in each group of air inlet / outlet channels respectively intake and extract air towards the corresponding infrared burners.

[0012] Preferably, the air inlet channels and the air outlet channels in each group of air inlet / outlet channels are both covered with a blocking net to block impurities from entering.

[0013] Preferably, the multi - row infrared burners are placed on a support frame.

[0014] Preferably, the support frame is driven by a driving mechanism to move closer to or away from the strip steel.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] (1) In the present utility model, the hot - air heating device is replaced with an infrared heating device. The infrared heating device includes multi - row infrared burners. When the coating on the surface of the strip steel needs to be dried, the multi - row infrared burners operate, emitting a targeted wavelength only for the water molecules in the coating, directly vaporizing the water in the coating without heating the strip steel. Therefore, the drying of the coating can be completed in a short distance, and the moving strip steel does not need to reduce its speed. Since the temperature rise of the strip steel is very small, the cooling energy consumption after heating is low, saving energy and enabling rapid cooling.

[0017] (2) In the present utility model, an air circulation device is arranged in the infrared heating device, which can promote the air flow between the infrared heating device and the strip steel and appropriately reduce the temperature between the infrared heating device and the strip steel.

[0018] (3) By adding the driving mechanism, the present utility model can drive the two groups of infrared heating devices to move closer to or away from the strip steel. When problems occur with the two groups of infrared heating devices, the distance between the infrared heating device and the strip steel can be adjusted to facilitate the repair of the infrared heating device. Description of the Drawings

[0019] Figure 1 It is a schematic internal structure diagram when the strip - steel coating drying and processing device provided by an embodiment of the present utility model is in use;

[0020] Figure 2 It is a schematic structure diagram of the infrared heating device provided by an embodiment of the present utility model;

[0021] Figure 3 is Figure 2 a partial schematic diagram of

[0022] Reference numerals: strip coating drying device 100, drying furnace shell 1, infrared heating device 2, infrared burner 21, air circulation device 22, air inlet channel 221, air outlet channel 222, blocking net 223, support frame 3, drive mechanism 4, strip 200. Detailed implementation mode

[0023] The present utility model will be further described in detail below in conjunction with specific embodiments, so that those skilled in the art can understand the present utility model more clearly.

[0024] As Figures 1-3 shown, the present novel provides a strip coating drying device 100, including a drying furnace shell 1 and two groups of infrared heating devices 2. The drying furnace shell 1 is cylindrical. An inlet and an outlet for the strip 200 are provided on the drying furnace shell 1. The strip 200 is in a stretched state and moves axially within the drying furnace shell 1. The two groups of infrared heating devices 2 are arranged on both sides of the strip 200. Each group of infrared heating devices 2 includes multiple rows of infrared burners 21 and an air circulation device 22. The multiple rows of infrared burners 21 are arranged along the length direction of the strip 200. Each infrared burner 21 releases infrared to the strip 200 by burning gas. The air circulation device 22 is used to circulate the air near the coating of the strip 200 with the outside air.

[0025] In the above technical solution, as Figure 1 shown, the strip 200 is in a stretched state and moving during the drying and cooling process. Taking the vertical direction as an example, when the drying furnace shell 1 is vertically arranged, the inlet is located below the drying furnace shell 1, and the outlet is located above the drying furnace shell 1. The strip 200 enters from the inlet and exits from the outlet. The two groups of infrared heating devices 2 are respectively located on both sides of the strip 200 to dry both sides of the strip 200 evenly. The present application does not limit the specific model of the infrared burner 21, as long as it can release infrared that can dry the coating layer by burning gas. The specific structure of the air circulation device 22 is not limited either. For example, it can be a ventilation pump communicating with the outside air. It should also be noted that the present application does not limit the specific number of the infrared burners 21, which can be set according to the actual situation. In some embodiments, the number of the multiple rows of infrared burners 21 is 6 rows, and the number of each row of infrared burners 21 is 12.

[0026] In this utility model, the hot air heating device is replaced with an infrared heating device 2. The infrared heating device 2 includes multiple rows of infrared burners 21. When it is necessary to dry the coating on the surface of the strip 200, the multiple rows of infrared burners 21 operate, emitting targeted wavelengths only for the water molecules in the coating, directly vaporizing the moisture in the coating without heating the strip 200. Therefore, the drying of the coating can be completed in a short distance, and thus the strip 200 in a moving state does not need to reduce its speed. Since the temperature rise of the strip 200 is very small, the cooling energy consumption after heating is low, saving energy and enabling rapid cooling. In this utility model, an air circulation device 22 is provided inside the infrared heating device 2, which can promote the air circulation between the infrared heating device 2 and the strip 200, and appropriately reduce the temperature between the infrared heating device 2 and the strip 200.

[0027] Specifically, a gas delivery pipe is connected to the side of each infrared burner 21 away from the strip 200. The end of the gas delivery pipe away from the infrared burner 21 is connected to a gas delivery device. The gas delivery pipe and the gas delivery device are not shown in the figure. The gas delivery device is outside the drying furnace shell 1, and delivers gas to the infrared burner 21 through the gas delivery pipe.

[0028] Further, the air circulation device 22 includes at least one set of air inlet / outlet channels, and the at least one set of air inlet / outlet channels is connected to an air circulation pump outside. It should be noted that one set of air inlet / outlet channels includes an air inlet channel 221 and an air outlet channel 222. The air inlet channel 221 outputs air towards the vicinity of the strip 200, and the air outlet channel 222 sucks away the air near the strip 200. The mutual cooperation of the air inlet channel 221 and the air outlet channel 222 enables air circulation. The present application does not limit the specific number of the air inlet / outlet channels, which can be determined according to specific circumstances. In some embodiments, the number of the at least one set of air inlet / outlet channels is two. By setting two sets of channels, the air circulation is faster, and the excessively high temperature near the strip 200 can be reduced to the required temperature.

[0029] Specifically, as Figure 3As shown, two groups of inlet / outlet air channels are arranged along the length direction of the steel strip 200, one group of inlet / outlet air channels is clamped on both sides of the three rows of infrared burners 21 close to the inlet, and the other group of inlet / outlet air channels is clamped on both sides of the three rows of infrared burners 21 close to the outlet. In some embodiments, taking the vertical direction as an example, when the drying furnace shell 1 is vertically arranged, the inlet is located below the drying furnace shell 1, and the outlet is located above the drying furnace shell 1, and the steel strip 200 enters from the inlet and exits from the outlet. The infrared burners 21 are arranged in 6 rows in the vertical direction, one group of inlet / outlet air channels is clamped on the outside of the upper three rows of infrared burners 21, and the other group of inlet / outlet air channels is clamped on the outside of the lower three rows of infrared burners 21, which can fully regulate the temperature of the air between the infrared burners 21 and the steel strip 200. In some embodiments, as Figures 2-3 As shown, the air inlet channel 221 and the air outlet channel 222 in each group of air inlet / outlet channels respectively intake and exhaust air toward the corresponding infrared burner 21, so the regulation effect is better.

[0030] In order to protect each group of air inlet / outlet channels, the air inlet channel 221 and the air outlet channel 222 are covered with blocking nets 223 to prevent impurities from entering the channel and causing channel damage.

[0031] In some embodiments, the multiple rows of infrared burners 21 are placed on a support frame 3 . The present application does not limit the specific structure of the support frame 3 , as long as it can be used to place and organize the infrared burners 21 .

[0032] In order to facilitate the inspection and movement of the support frame 3, the present application further provides the driving mechanism 4, and the support frame 3 is driven by the driving mechanism 4 to approach or move away from the strip steel 200. The present application does not limit the specific structure of the driving mechanism 4, for example, the driving mechanism 4 may include a cylinder and a fixed frame, the support frame 3 and the fixed frame are slidably connected via a slideway, the cylinder body of the cylinder is connected to the fixed frame, the telescopic rod is connected to the support frame 3, and the movement of the support frame 3 is driven by the telescopic movement of the cylinder, wherein the number of the cylinders is not limited, and in order to make the support frame 3 evenly stressed, the number of the cylinders may be an even number and symmetrically distributed.

[0033] By adding the driving mechanism 4, the utility model can drive the two groups of infrared heating devices 2 to be close to or away from the steel strip 200. When problems occur with the two groups of infrared heating devices 2, the distance between the infrared heating devices 2 and the steel strip 200 can be adjusted to facilitate maintenance of the infrared heating devices 2.

[0034] In the present utility model, the mechanisms, components and parts for which no specific structures are described are existing structures that already exist in the prior art and can be directly purchased from the market.

[0035] The above are only the preferred embodiments of the present utility model and are not intended to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A strip steel coating drying treatment device, characterized in that: include: The drying furnace shell is cylindrical and is provided with an inlet and an outlet for the strip steel. The strip steel is in a stretched state in the drying furnace shell and moves in the axial direction. Two groups of infrared heating devices are sandwiched on both sides of the strip steel, each group of infrared heating devices includes multiple rows of infrared burners and air circulation devices, the multiple rows of infrared burners are arranged along the length direction of the strip steel, each infrared burner releases infrared to the strip steel by burning fuel gas, and the air circulation device is used to circulate the air near the strip steel coating with the outside air.

2. The strip coating drying treatment device according to claim 1, characterized in that: The number of the multiple rows of infrared burners is 6, and the number of infrared burners in each row is 12.

3. The strip steel coating drying treatment device according to claim 1, characterized in that: A side of each infrared burner away from the strip steel is connected to a gas supply pipe, and an end of the gas supply pipe away from the infrared burner is connected to a gas supply device.

4. The strip coating drying treatment device according to claim 1, characterized in that: The air circulation device comprises at least one group of air inlet / outlet channels, and the at least one group of air inlet / outlet channels is communicated with an external air circulation pump.

5. The strip coating drying treatment device according to claim 4, characterized in that: The number of the at least one group of air inlet / outlet channels is two.

6. The strip steel coating drying treatment device according to claim 5, characterized in that: Two groups of inlet / outlet air channels are arranged along the length direction of the strip, one group of inlet / outlet air channels is clamped on both sides of the three rows of infrared burners close to the inlet, and the other group of inlet / outlet air channels is clamped on both sides of the three rows of infrared burners close to the outlet.

7. The strip steel coating drying treatment device according to claim 6, characterized in that: The air inlet channel and the air outlet channel in each group of air inlet / outlet channels respectively supply air and exhaust air toward the corresponding infrared burner.

8. The strip steel coating drying treatment device according to claim 1, characterized in that: The air inlet channel and the air outlet channel in each set of air inlet / outlet channels are covered with a blocking net to prevent impurities from entering.

9. The strip steel coating drying treatment device according to claim 1, characterized in that: The multiple rows of infrared burners are placed on a supporting frame.

10. The strip steel coating drying treatment device according to claim 9, characterized in that: The support frame is driven to approach or move away from the steel strip by a driving mechanism.

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