Environment-friendly energy-saving annealing furnace for stainless steel pipe

Abstract

The utility model provides an environment-friendly energy-saving annealing furnace for stainless steel pipes, which comprises a bidirectional driving conveyor, an annealing furnace main body is fixedly arranged above the middle of the bidirectional driving conveyor, and an integrated input box arranged on the annealing furnace main body is respectively communicated with a heating integrated plate and a cooling integrated plate. The heating integrated plate and the cooling integrated plate are arranged at the upper part in the annealing furnace main body and are separated by a separation plate fixedly arranged in the annealing furnace main body; numerous steel pipe products are allowed to be placed on the bidirectional driving conveyor; according to the utility model, the steel pipe is rotated in the annealing process, so that all-directional uniform heating and cooling are ensured, the annealing efficiency and uniformity are obviously improved, and the energy consumption is reduced at the same time. Rotating driving promotes oxide skin to fall off, the surface of the steel pipe is cleaned, and the follow-up environment-friendly treatment burden is relieved. The two-way driving conveyor ensures continuous and stable movement and rotation of the steel pipe, and uneven heating and energy waste caused by static steel pipes in a traditional annealing furnace are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of annealing furnace technology, and in particular relates to an environmentally friendly and energy-saving annealing furnace for stainless steel tubes. Background Technology

[0002] In the manufacturing process of steel pipe products, the annealing furnace plays a crucial role, serving as a key component in the heat treatment of steel pipes to optimize material properties, relieve stress, or reshape the microstructure. However, the operation of traditional annealing furnaces has a significant limitation: once the steel pipes are fed into the furnace via a conveying mechanism, they remain stationary. This greatly restricts the all-around heating and cooling of the steel pipes during the heating and cooling processes, leading to increased energy consumption.

[0003] More importantly, due to cost control and resource utilization considerations, most projects do not use inert gas protection during the annealing process of steel pipes. The direct consequence of this practice is that oxide scale inevitably forms on the steel pipes during heating. The formation of oxide scale not only affects the surface quality of the steel pipes but also brings many inconveniences and challenges to subsequent environmentally friendly production processes, posing a potential threat to the smoothness of the production process and the environmental performance of the products.

[0004] Therefore, it is essential to invent an environmentally friendly and energy-saving annealing furnace for stainless steel pipes. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides an environmentally friendly and energy-saving annealing furnace for stainless steel pipes, comprising a bidirectional drive conveyor, an annealing furnace body, an integrated input box, a heating integrated plate, a cooling integrated plate, a partition plate, and steel pipe products. The annealing furnace body is fixedly installed above the middle of the bidirectional drive conveyor. The integrated input box installed on the annealing furnace body is connected to the heating integrated plate and the cooling integrated plate, respectively. The heating integrated plate and the cooling integrated plate are installed inside the upper part of the annealing furnace body and are separated by a partition plate fixedly installed inside the annealing furnace body. Numerous steel pipe products can be placed on the bidirectional drive conveyor.

[0006] Preferably, the bidirectional drive conveyor includes a conveying platform, a water storage tank, drive rollers, a servo motor, a forward conveyor belt, and bosses. An annealing furnace body is fixedly installed in the middle above the conveying platform, and a water storage tank is provided in the middle of the platform. Drive rollers are rotatably installed at both ends of the two sides above the conveying platform, and one end of each of the two drive rollers is fixed to the output end of the corresponding servo motor fixed to the outside of the conveying platform. A forward conveyor belt is assembled on every two drive rollers on the same side, and several evenly distributed bosses are provided on each forward conveyor belt. The steel pipe product is placed on two forward conveyor belts and is constrained by the bosses.

[0007] Preferably, the conveying platform has a U-shaped structure, and the water storage tank in the middle of the conveying platform is located below the annealing furnace body and below the cooling integrated plate.

[0008] Preferably, the bidirectional drive conveyor further includes a drive side seat, an output wheel, a reverse drive belt, and a drain hole A. There are two drive side seats, which are fixedly installed on the inner wall above the water storage tank in a mirror-symmetrical manner. Output wheels are installed at both ends of the two drive side seats. There are two output wheels, and a reverse drive belt is mounted on the two output wheels. A plurality of drain holes A are evenly distributed through the reverse drive belt.

[0009] Preferably, one of the drive side seats has a built-in high-temperature resistant motor, which is enclosed by a heat insulation structure, and the output end of the high-temperature resistant motor built into the drive side seat is fixed to one of the output wheels.

[0010] Preferably, the reverse drive belt mounted on the output wheel moves in the opposite direction to the forward conveyor belt mounted on the drive roller, and the reverse drive belt contacts the lower surface of the forward conveyor belt placed on the forward conveyor belt.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The core advantage of this invention lies in its innovative bidirectional drive conveyor design. This design ensures that the steel pipe is no longer stationary during the annealing process, but rather rotates through the combined drive of the forward and reverse conveyor belts. This guarantees that all parts of the steel pipe can evenly and fully contact the heating and cooling integrated plates, achieving comprehensive heating and cooling. This improvement not only significantly enhances annealing efficiency and uniformity but also reduces energy consumption. Furthermore, the rotational drive method enhances friction and collision on the steel pipe surface, effectively promoting the removal of oxide scale formed during heating. This facilitates surface cleaning and reduces the difficulty and cost of subsequent environmental treatment. More importantly, the bidirectional drive conveyor allows the steel pipe to move and rotate continuously and stably, avoiding the uneven heating and energy waste problems caused by the stationary steel pipe in traditional annealing furnaces. Simultaneously, the partition plate design ensures the independence and high efficiency of the heating and cooling processes, further improving energy utilization efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a partial cross-sectional structural diagram of the present invention.

[0015] Figure 3 This is a utility model Figure 2 A schematic diagram of the main structure.

[0016] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A.

[0017] In the picture:

[0018] 1. Bidirectional drive conveyor, 11. Conveying platform, 12. Water storage tank, 13. Drive roller, 14. Servo motor, 15. Forward conveyor belt, 16. Boss, 17. Drive side seat, 18. Output wheel, 19. Reverse drive belt, 1A. Drain hole, 2. Annealing furnace body, 3. Integrated input box, 4. Heating integrated plate, 5. Cooling integrated plate, 6. Separator, 7. Steel pipe product. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0021] As attached Figure 1 To be continued Figure 4 As shown:

[0022] This utility model provides an environmentally friendly and energy-saving annealing furnace for stainless steel pipes, comprising a bidirectional drive conveyor 1, an annealing furnace body 2, an integrated input box 3, a heating integrated plate 4, a cooling integrated plate 5, a partition plate 6, and steel pipe products 7. The bidirectional drive conveyor 1 is fixedly installed above the middle of the annealing furnace body 2. The integrated input box 3 installed on the annealing furnace body 2 is connected to the heating integrated plate 4 and the cooling integrated plate 5 respectively. The heating integrated plate 4 and the cooling integrated plate 5 are installed inside the upper part of the annealing furnace body 2, and the two are separated by the partition plate 6 fixedly installed inside the annealing furnace body 2. The bidirectional drive conveyor 1 allows for the placement of numerous steel pipe products 7.

[0023] Furthermore, the bidirectional drive conveyor 1 includes a conveying platform 11, a water storage tank 12, drive rollers 13, a servo motor 14, a forward conveyor belt 15, and bosses 16. The annealing furnace body 2 is securely mounted above the center of the conveying platform 11, while the water storage tank 12 is cleverly positioned below it. Rotatable drive rollers 13 are mounted at both ends of the conveying platform 11. One end of each drive roller 13 is tightly connected to the output of the external servo motor 14, ensuring stable power transmission. A forward conveyor belt 15 is mounted on every two drive rollers 13 located on the same side, and bosses 16 are evenly distributed on these conveyor belts to support and restrict the movement of the steel pipe product 7, ensuring its stability during conveying.

[0024] Furthermore, the conveying platform 11 adopts a unique U-shaped structural design. This design not only enhances the structural strength of the platform, but more importantly, it provides an ideal location for the water storage tank 12—located below the annealing furnace body 2 and the cooling integrated plate 5. This layout not only makes full use of space but also helps to effectively manage the heat and water vapor generated during the cooling process, improving the efficiency of the entire annealing process.

[0025] Furthermore, the bidirectional drive conveyor 1 also includes drive side seats 17, output wheels 18, a reverse drive belt 19, and drainage holes 1A. Two drive side seats 17 are fixedly installed on the upper inner wall of the water storage tank 12 in a mirror-symmetrical manner, with output wheels 18 installed at both ends of each. A reverse drive belt 19 is mounted on both output wheels 18. Multiple drainage holes 1A are evenly distributed on this drive belt 19 to facilitate drainage and ventilation, thereby improving the durability and efficiency of the drive belt.

[0026] Furthermore, one of the drive-side seats 17 houses a high-temperature resistant motor, which is carefully encased in a thermal insulation structure to ensure stable operation in high-temperature environments. The output of the high-temperature resistant motor is tightly connected to one of the output pulleys 18, providing a continuous power supply to the reverse drive belt 19. This design not only improves the automation of the entire annealing process but also ensures that the reverse drive belt 19 operates stably and efficiently.

[0027] Furthermore, in the bidirectional drive conveyor 1, the reverse drive belt 19 mounted on the output wheel 18 moves in the opposite direction to the forward conveyor belt 15 mounted on the drive roller 13. This design allows the reverse drive belt 19 to contact the lower surface of the steel pipe product 7 placed on the forward conveyor belt 15, thereby providing a reverse rotational force to the steel pipe during conveying. This rotational motion not only helps the steel pipe to be heated and cooled in all directions during the annealing process, but also helps to remove and clean the oxide scale, improving the surface quality and annealing efficiency of the steel pipe. Both the reverse drive belt 19 and the forward conveyor belt 15 are made of high-temperature resistant materials.

[0028] The working principle is as follows: First, start the device and place both ends of the steel pipe product 7 onto two forward conveyor belts 15. These two forward conveyor belts 15 are driven by drive rollers 13 located at both ends of the conveyor platform 11, and the power of these drive rollers 13 comes from external servo motors 14. After the servo motors 14 are started, they transmit power stably to the drive rollers 13 through a tight connection between their output ends and the drive rollers 13, thereby driving the forward conveyor belts 15 to start running.

[0029] On the forward conveyor belt 15, bosses 16 are evenly distributed. The main function of these bosses 16 is to restrict the movement of the steel pipe product 7 and ensure its stability during the conveying process. When the steel pipe product 7 is placed on the forward conveyor belt 15, the bosses 16 restrict the movement of both ends of the steel pipe to prevent misalignment and collisions during the conveying process.

[0030] As the forward conveyor belt 15 operates, the steel pipe product 7 is slowly fed into the annealing furnace body 2. At this time, the integrated input box 3 starts working, sending preheated gas or medium into the heating integrated plate 4 to heat the steel pipe. The heating integrated plate 4 is located at the top inside the annealing furnace body 2, separated from the cooling integrated plate 5 below by the partition plate 6. This design ensures the independence of the heating and cooling processes, improving annealing efficiency.

[0031] During the heating process, the steel pipe product 7 is not only subjected to heat radiation from the heating integrated plate 4, but also to all-round heating due to the continuous operation of the forward conveyor belt 15 and the reverse rotational force of the reverse drive belt 19. This rotational motion helps to release stress and improve the microstructure inside the steel pipe, while also facilitating the removal and cleaning of oxide scale.

[0032] After heating, the steel pipe product 7 continues to be transported by the forward conveyor belt 15 to the cooling integrated plate 5 for cooling treatment. The cooling integrated plate 5 rapidly cools the steel pipe by releasing a cooling medium or gas to fix its post-heating microstructure.

[0033] It is worth noting that a water storage tank 12 is cleverly arranged below the conveyor platform 11. The water storage tank 12 not only provides space for collecting and treating the heat and water vapor that may be generated during the cooling process, but also further improves the automation and efficiency of the annealing process through the design of the drive side seat 17 and the reverse drive belt 19 above it. The high-temperature resistant motor built into the drive side seat 17 provides a continuous power source for the reverse drive belt 19, while the drain hole 1A on the reverse drive belt 19 facilitates drainage and ventilation, improving the durability and efficiency of the drive belt.

[0034] Finally, the steel pipe product 7, after being heated and cooled, is conveyed out of the annealing furnace body 2 by the forward conveyor belt 15, completing the entire annealing process. This environmentally friendly and energy-saving annealing furnace not only improves the annealing efficiency and quality of steel pipes, but also achieves efficient resource utilization and environmental protection through its unique design and working principle.

[0035] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. An environmentally friendly and energy-saving annealing furnace for stainless steel pipes, characterized in that, The assembly includes a bidirectional drive conveyor (1), an annealing furnace body (2), an integrated input box (3), a heating integrated plate (4), a cooling integrated plate (5), a partition plate (6), and steel pipe products (7). The bidirectional drive conveyor (1) has the annealing furnace body (2) fixedly installed above the middle. The integrated input box (3) installed on the annealing furnace body (2) is connected to the heating integrated plate (4) and the cooling integrated plate (5) respectively. The heating integrated plate (4) and the cooling integrated plate (5) are installed inside the annealing furnace body (2) and are separated by the partition plate (6) fixedly installed inside the annealing furnace body (2). The bidirectional drive conveyor (1) allows for the placement of numerous steel pipe products (7).

2. The environmentally friendly and energy-saving annealing furnace for stainless steel pipes as described in claim 1, characterized in that: The bidirectional drive conveyor (1) includes a conveying platform (11), a water storage tank (12), drive rollers (13), a servo motor (14), a forward conveyor belt (15), and bosses (16). An annealing furnace body (2) is fixedly installed above the middle of the conveying platform (11), and a water storage tank (12) is provided in the middle of it. Drive rollers (13) are rotatably installed at both ends of the two sides above the conveying platform (11). Either end of the two drive rollers (13) is fixedly installed outside the conveying platform (11) and the output end of the corresponding servo motor (14) is fixed. A forward conveyor belt (15) is assembled on each pair of drive rollers (13) on the same side. Several bosses (16) are evenly distributed on each forward conveyor belt (15). The steel pipe product (7) is placed on the two forward conveyor belts (15) and is restricted by the bosses (16).

3. The environmentally friendly and energy-saving annealing furnace for stainless steel pipes as described in claim 2, characterized in that: The conveying platform (11) has a U-shaped structure. The water storage tank (12) set in the middle of the conveying platform (11) is located below the annealing furnace body (2) and below the cooling integrated plate (5).

4. The environmentally friendly and energy-saving annealing furnace for stainless steel pipes as described in claim 3, characterized in that: The bidirectional drive conveyor (1) further includes a drive side seat (17), an output wheel (18), a reverse drive belt (19), and a drain hole (1A). There are two drive side seats (17), which are fixedly installed on the inner wall above the water storage tank (12) in a mirror symmetrical manner. Output wheels (18) are installed at both ends of the two drive side seats (17). There are two output wheels (18), and a reverse drive belt (19) is mounted on the two output wheels (18). Several drain holes (1A) are evenly opened through the reverse drive belt (19).

5. The environmentally friendly and energy-saving annealing furnace for stainless steel pipes as described in claim 4, characterized in that: One of the drive side seats (17) has a built-in high-temperature resistant motor, which is wrapped by a heat insulation structure. The output end of the high-temperature resistant motor built into the drive side seat (17) is fixed to one of the output wheels (18).

6. The environmentally friendly and energy-saving annealing furnace for stainless steel pipes as described in claim 5, characterized in that: The reverse drive belt (19) mounted on the output wheel (18) moves in the opposite direction to the forward conveyor belt (15) mounted on the drive roller (13), and the reverse drive belt (19) contacts the lower surface of the forward conveyor belt (15) placed on the forward conveyor belt (15).

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