Cold-rolled strip steel pre-oxidation device

Abstract

The utility model discloses a cold-rolled strip steel pre-oxidation device which comprises a pre-oxidation box, a feeding port and a discharging port, the feeding port and the discharging port are formed in the two ends of the pre-oxidation box, and a cleaning mechanism and an oxidation mechanism are sequentially arranged in the pre-oxidation box rightwards in the length direction of the pre-oxidation box. The cleaning mechanism comprises a set of driving motors, a set of driving conveying rollers, a set of driving gears, a set of first transmission gears, a set of second transmission gears, a servo air cylinder, a pushing plate, a set of mounting frames, a set of driven conveying rollers, a set of driven gears, a fixed dust suction hood and a lifting dust suction hood. The conveying device has the beneficial effects that a group of driving conveying rollers are matched with a group of driven conveying rollers to press and convey steel strips with different thicknesses, and are matched with the fixed dust collection cover and the lifting dust collection cover to firstly clean impurities on the surface of the cold-rolled strip steel; and the oxidation mechanism adopts a plurality of fixed nozzles matched with a plurality of lifting nozzles to perform double-sided pre-oxidation treatment on the cleaned steel plate, so that the pre-oxidation efficiency of the steel strip is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of strip steel pre-oxidation technology, specifically to a cold-rolled strip steel pre-oxidation device. Background Technology

[0002] Cold-rolled strip steel is made from hot-rolled strip steel or steel plate and rolled into finished products at room temperature using a cold rolling mill. Strip steel that has undergone plastic deformation after rolling in a cold state (room temperature) or below the recrystallization temperature is usually called cold-rolled strip steel, or conventionally, cold strip.

[0003] Pre-oxidation of cold-rolled strip steel involves spraying gases such as oxygen and nitrogen onto the surface of the strip, causing the oxides of alloying elements on the surface to be completely covered by iron oxide. Existing patent application number CN202222460854.0 discloses a pre-oxidation device for cold-rolled strip steel, which uses a lifting mechanism to link the position of the exhaust pipe with the thickness of the fed strip, maintaining a constant distance between the exhaust pipe and the strip, making adjustment simple and efficient. However, the pre-oxidation process for cold-rolled strip steel only allows for single-sided oxidation, resulting in low oxidation efficiency. Furthermore, impurities easily adhere to the surface of cold-rolled strip steel during production; without cleaning, this affects the oxidation reaction effect.

[0004] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Utility Model Content

[0005] To address the above deficiencies, this utility model provides a pre-oxidation device for cold-rolled strip steel to solve the problem of double-sided pre-oxidation of cold-rolled strip steel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pre-oxidation device for cold-rolled strip steel includes a pre-oxidation box and an inlet and an outlet at both ends of the pre-oxidation box. A cleaning mechanism and an oxidation mechanism are arranged sequentially to the right along the length of the pre-oxidation box.

[0008] The cleaning mechanism includes a set of drive motors, a set of active conveyor rollers, a set of drive gears, a set of transmission gear one, a set of transmission gear two, a servo cylinder, a push plate, a set of mounting brackets, a set of driven conveyor rollers, a set of driven gears, a fixed dust suction hood, and a lifting dust suction hood. A set of drive motors is horizontally mounted on both sides of the rear end of the pre-oxidation tank. A set of active conveyor rollers is movably inserted into both sides of the bottom of the pre-oxidation tank, with their rear ends connected to the rotating ends of the corresponding drive motors. A set of drive gears is mounted on the front end of a set of active conveyor rollers. A set of transmission gear one is movably mounted on both sides of the front end of the pre-oxidation tank and meshes with the corresponding drive gears. The second set of transmission gears is located above the first set of transmission gears and meshes with the corresponding first set of transmission gears. The servo cylinder is installed at the center of the upper end of the pre-oxidation box, and its telescopic end is movably inserted into the pre-oxidation box. The push plate is installed on the telescopic end of the servo cylinder. A set of mounting brackets is installed on both sides of the bottom of the push plate. A set of driven conveying rollers is movably inserted into the set of mounting brackets. A set of driven gears is installed on the front end of the set of driven conveying rollers and meshes with the corresponding second set of transmission gears. The fixed dust suction hood is installed on the bottom left side of the pre-oxidation box. The lifting dust suction hood is installed on the bottom left side of the push plate and corresponds to the position of the fixed dust suction hood.

[0009] Furthermore, the oxidation mechanism includes a fixed gas supply pipe, several fixed nozzles, a lifting gas supply pipe, and several lifting nozzles. The fixed gas supply pipe is installed on the bottom right side of the pre-oxidation chamber, and the several fixed nozzles are evenly installed on the upper end of the fixed gas supply pipe. The lifting gas supply pipe is installed on the bottom right side of the push plate, and the several lifting nozzles are evenly installed on the lower end of the lifting gas supply pipe, corresponding to the positions of the several fixed nozzles.

[0010] Furthermore, the fixed gas supply pipe and the lifting gas supply pipe are respectively connected to the external oxygen tank and nitrogen tank, and the fixed dust suction hood and the lifting dust suction hood are respectively connected to the external dust suction equipment.

[0011] Furthermore, a set of sliding rods is movably inserted into the upper end of the pre-oxidation box, and the bottom of the set of sliding rods is connected to the push plate.

[0012] Furthermore, two sets of sliding grooves are opened on both sides of the front and rear surfaces of the pre-oxidation box, and one set of driven conveying rollers are slidably installed in the sliding grooves at both ends by sliders.

[0013] Furthermore, adjacent sets of transmission gear one and transmission gear two are hinged together by connecting rod one, and adjacent sets of transmission gear two and driven gear are hinged together by connecting rod two.

[0014] Furthermore, guide wheels are installed at the feed inlet and the discharge outlet respectively.

[0015] This utility model provides a pre-oxidation device for cold-rolled strip steel, which has the following beneficial effects: the cleaning mechanism located in the pre-oxidation box first uses a set of active conveying rollers and a set of driven conveying rollers to press and convey steel strips of different thicknesses; the fixed dust suction hood and the lifting dust suction hood first clean the impurities on the surface of the cold-rolled strip steel; the oxidation mechanism uses several fixed nozzles and several lifting nozzles to perform double-sided pre-oxidation treatment on the cleaned steel plate, effectively improving the pre-oxidation efficiency of the steel strip. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a cold-rolled strip pre-oxidation device according to the present invention.

[0017] Figure 2 This is a front view of the pre-oxidation box described in this utility model.

[0018] Figure 3 This is a schematic diagram of the active conveying roller described in this utility model.

[0019] Figure 4 This is a schematic diagram of the driven conveyor roller described in this utility model.

[0020] Figure 5 This is a rear view of the pre-oxidation chamber described in this utility model.

[0021] In the diagram: 1. Pre-oxidation box; 2. Inlet; 3. Outlet; 4. Drive motor; 5. Active conveyor roller; 6. Drive gear; 7. Transmission gear one; 8. Transmission gear two; 9. Transmission gear two; 10. Push plate; 11. Mounting frame; 12. Driven conveyor roller; 13. Driven gear; 14. Fixed dust hood; 15. Lifting dust hood; 16. Fixed air supply pipe; 17. Fixed nozzle; 18. Lifting air supply pipe; 19. Lifting nozzle; 20. Sliding rod; 21. Slide groove; 22. Sliding block; 23. Connecting rod one; 24. Connecting rod two; 25. Guide wheel. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-5As shown: A pre-oxidation device for cold-rolled strip steel includes a pre-oxidation box 1 and an inlet 2 and an outlet 3 at both ends of the pre-oxidation box 1. A cleaning mechanism and an oxidation mechanism are sequentially arranged to the right along the length of the pre-oxidation box 1. The cleaning mechanism includes a set of drive motors 4, a set of active conveying rollers 5, a set of active gears 6, a set of transmission gears 1-7, a set of transmission gears 2-8, a servo cylinder 9, a push plate 10, a set of mounting brackets 11, a set of driven conveying rollers 12, a set of driven gears 13, a fixed dust suction hood 14, and a lifting dust suction hood 15. A set of drive motors 4 are horizontally installed on both sides of the rear end of the pre-oxidation box 1. A set of active conveying rollers 5 are movably inserted into both sides of the bottom of the pre-oxidation box 1, with their rear ends respectively connected to the opposite sides. The drive motor 4 is connected to the rotating end. A set of driving gears 6 is mounted on the front end of a set of driving conveyor rollers 5. A set of transmission gears 7 are movably mounted on both sides of the front end of the pre-oxidation box 1 and mesh with the corresponding driving gears 6. A set of transmission gears 8 are located above the set of transmission gears 7 and mesh with the corresponding transmission gears 7. The servo cylinder 9 is mounted at the center of the upper end of the pre-oxidation box 1, and its telescopic end is movably inserted into the pre-oxidation box 1. The push plate 10 is mounted on the telescopic end of the servo cylinder 9. A set of mounting brackets 11 are mounted on both sides of the bottom of the push plate 10. A set of driven conveyor rollers 12 are movably inserted into the set of mounting brackets 11. A set of driven gears 13 are mounted on the front end of the set of driven conveyor rollers 12. And respectively mesh with the corresponding transmission gear 8. The fixed dust suction hood 14 is installed on the bottom left side of the pre-oxidation box 1, and the lifting dust suction hood 15 is installed on the bottom left side of the push plate 10, and corresponds to the position of the fixed dust suction hood 14; the oxidation mechanism includes a fixed air supply pipe 16, several fixed nozzles 17, a lifting air supply pipe 18, and several lifting nozzles 19. The fixed air supply pipe 16 is installed on the bottom right side of the pre-oxidation box 1, several fixed nozzles 17 are evenly installed on the upper end of the fixed air supply pipe 16, the lifting air supply pipe 18 is installed on the bottom right side of the push plate 10, and several lifting nozzles 19 are evenly installed on the lower end of the lifting air supply pipe 18, and correspond to the position of the several fixed nozzles 17; the fixed Gas supply pipe 16 and lifting gas supply pipe 18 are respectively connected to external oxygen tank and nitrogen tank; fixed dust suction hood 14 and lifting dust suction hood 15 are respectively connected to external dust suction equipment; a set of sliding rods 20 are movably inserted at the upper end of the pre-oxidation box 1, and the bottom of the set of sliding rods 20 is connected to the push plate 10; two sets of sliding grooves 21 are opened on both sides of the front and rear surfaces of the pre-oxidation box 1, and the two ends of a set of driven conveying rollers 12 are slidably installed in the sliding grooves 21 by sliders 22; adjacent sets of transmission gears 1-7 and transmission gears 2-8 are hinged by connecting rod 1-23, and adjacent sets of transmission gears 2-8 and driven gears 13 are hinged by connecting rod 2-24; guide wheels 25 are respectively installed at the feed inlet 2 and the discharge outlet 3.

[0023] The working principle of this implementation scheme is as follows: The electrical equipment used in this device is controlled by an external controller. The fixed gas supply pipe 16 and the lifting gas supply pipe 18 are respectively connected to the external oxygen tank and nitrogen tank. The fixed dust suction hood 14 and the lifting dust suction hood 15 are respectively connected to the external dust suction equipment. The height difference between the dust suction hood and the nozzle and the conveying roller is fixed, which facilitates the cleaning and pre-oxidation of cold-rolled steel strips of different thicknesses.

[0024] During cleaning: A set of drive motors 4 are horizontally installed on both sides of the rear end of the pre-oxidation box 1. A set of active conveyor rollers 5 are movably inserted into the bottom sides of the pre-oxidation box 1 through fastening bearings, and their rear ends are respectively connected to the rotating ends of the corresponding drive motors 4. A set of drive gears 6 are installed on the front end of the set of active conveyor rollers 5. A set of transmission gears 1-7 are movably installed on both sides of the front end of the pre-oxidation box 1 through a rotating shaft, and respectively mesh with the corresponding drive gears 6. A set of transmission gears 2-8 is located above the set of transmission gears 1-7, and respectively meshes with the corresponding transmission gears 1-7. A servo cylinder 9 is installed at the center of the upper end of the pre-oxidation box 1, and its telescopic end is movably inserted into the pre-oxidation box 1. A push plate 10 is installed on the telescopic end of the servo cylinder 9. A set of mounting brackets 11 are installed on both sides of the bottom of the push plate 10. A set of driven conveyor rollers 12 are movably inserted into the set of mounting brackets 11 through fastening bearings. Inside the mounting frame 11, a set of driven gears 13 are mounted on the front end of a set of driven conveying rollers 12 and mesh with corresponding transmission gears 8. A fixed dust suction hood 14 is mounted on the bottom left side of the pre-oxidation box 1, and a lifting dust suction hood 15 is mounted on the bottom left side of the push plate 10 and corresponds to the position of the fixed dust suction hood 14. A set of sliding rods 20 are movably inserted into the upper end of the pre-oxidation box 1, and the bottom of the set of sliding rods 20 is connected to the push plate 10. Two sets of sliding grooves 21 are opened on both sides of the front and rear surfaces of the pre-oxidation box 1. The two ends of a set of driven conveying rollers 12 are slidably mounted in the sliding grooves 21 through sliders 22. Adjacent sets of transmission gears 7 and 8 are hinged by connecting rod 23, and adjacent sets of transmission gears 8 and driven gears 13 are hinged by connecting rod 24. Guide wheels 25 are installed at the inlet 2 and outlet 3, respectively. Figure 1 and Figure 2 As shown, the extension end of the servo cylinder 9 extends, driving a set of driven conveyor rollers 12 to contact the bottom of the steel strip via the push plate 10. Then, a set of drive motors 4 first drives a set of active conveyor rollers 5 to rotate, and through a set of active gears 6, a set of transmission gear 1 7, a set of transmission gear 2 8 and a set of driven gears 13, drives a set of driven conveyor rollers 12 to rotate relative to each other, which facilitates the pressing and conveying of steel strips of different thicknesses. With the help of the fixed dust suction hood 14 and the lifting dust suction hood 15, impurities on the surface of the cold-rolled steel strip can be cleaned, which is convenient for subsequent pre-oxidation treatment. When the height of a set of driven conveyor rollers 12 is adjusted, the connecting rod 1 23 and the connecting rod 2 24 deflect accordingly, which is used to keep the transmission gear 2 8, the transmission gear 1 7 and the driven gear 13 always in a meshed state.

[0025] During oxidation: a fixed gas supply pipe 16 is installed on the bottom right side of the pre-oxidation box 1, several fixed nozzles 17 are evenly installed on the upper end of the fixed gas supply pipe 16, a lifting gas supply pipe 18 is installed on the bottom right side of the push plate 10, and several lifting nozzles 19 are evenly installed on the lower end of the lifting gas supply pipe 18, corresponding to the positions of the several fixed nozzles 17. An electric heating device is installed in the pre-oxidation box 1 to keep the cold-rolled steel sheet warm. This is existing technology. At the same time, the several fixed nozzles 17, together with the several lifting nozzles 19, can spray oxygen and nitrogen and other gases onto the surface of the cleaned cold-rolled steel sheet, so that the oxides of the alloying elements on the surface are completely covered by iron oxide, achieving the purpose of double-sided pre-oxidation and improving the pre-oxidation efficiency of cold-rolled steel strip.

[0026] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A cold-rolled strip steel pre-oxidation device, comprising a pre-oxidation box (1) and a feeding port (2) and a discharging port (3) opened at both ends of the pre-oxidation box (1), characterized in that, The pre-oxidation box (1) is sequentially provided with a cleaning mechanism and an oxidation mechanism along the length direction thereof from right to left; The cleaning mechanism comprises a group of driving motors (4), a group of driving conveying rollers (5), a group of driving gears (6), a group of transmission gears I (7), a group of transmission gears II (8), a servo cylinder (9), a pushing plate (10), a group of mounting frames (11), a group of driven conveying rollers (12), a group of driven gears (13), a fixed dust cover (14) and a lifting dust cover (15), the group of driving motors (4) are horizontally mounted at the two sides of the rear end of the pre-oxidation box (1), the group of driving conveying rollers (5) are movably inserted into the two sides of the bottom of the pre-oxidation box (1) and the rear ends thereof are respectively connected with the rotating ends of the corresponding driving motors (4), the group of driving gears (6) are mounted on the front ends of the group of driving conveying rollers (5), the group of transmission gears I (7) are movably mounted at the two sides of the front end of the pre-oxidation box (1) and are respectively engaged with the corresponding driving gears (6), the group of transmission gears II (8) are located above the group of transmission gears I (7) and are respectively engaged with the corresponding transmission gears I (7), the servo cylinder (9) is mounted at the center of the upper end of the pre-oxidation box (1) and the telescopic end thereof is movably inserted into the pre-oxidation box (1), the pushing plate (10) is mounted on the telescopic end of the servo cylinder (9), the group of mounting frames (11) are mounted at the two sides of the bottom of the pushing plate (10), the group of driven conveying rollers (12) are movably inserted into the group of mounting frames (11), the group of driven gears (13) are mounted on the front ends of the group of driven conveying rollers (12) and are respectively engaged with the corresponding transmission gears II (8), the fixed dust cover (14) is mounted on the left side of the bottom of the pre-oxidation box (1), and the lifting dust cover (15) is mounted on the left side of the bottom of the pushing plate (10) and is located opposite to the fixed dust cover (14).

2. A cold-rolled strip steel pre-oxidation device according to claim 1, characterized in that, The oxidation mechanism comprises a fixed gas conveying pipe (16), a plurality of fixed nozzles (17), a lifting gas conveying pipe (18) and a plurality of lifting nozzles (19), the fixed gas conveying pipe (16) is mounted on the right side of the bottom of the pre-oxidation box (1), the plurality of fixed nozzles (17) are uniformly mounted on the upper end of the fixed gas conveying pipe (16), the lifting gas conveying pipe (18) is mounted on the right side of the bottom of the pushing plate (10), and the plurality of lifting nozzles (19) are uniformly mounted on the lower end of the lifting gas conveying pipe (18) and are located opposite to the plurality of fixed nozzles (17).

3. A cold-rolled strip steel pre-oxidation device according to claim 2, characterized in that, The fixed gas conveying pipe (16) and the lifting gas conveying pipe (18) are respectively communicated with external oxygen tanks and nitrogen tanks, and the fixed dust cover (14) and the lifting dust cover (15) are respectively communicated with external dust collection equipment.

4. The cold-rolled strip steel pre-oxidation device of claim 1, wherein, A group of sliding rods (20) are movably inserted into the upper end of the pre-oxidation box (1), and the bottom of the group of sliding rods (20) is connected with the pushing plate (10).

5. The cold-rolled strip steel pre-oxidation device of claim 1, wherein, Two groups of sliding grooves (21) are formed in the two sides of the front surface and the rear surface of the pre-oxidation box (1), and the two ends of the group of driven conveying rollers (12) are respectively slidably mounted in the sliding grooves (21) through sliding blocks (22).

6. The cold-rolled strip steel pre-oxidation device of claim 1, wherein, The adjacent set of transmission gear one (7) and transmission gear two (8) are hinged through connecting rod one (23), and the adjacent set of transmission gear two (8) and driven gear (13) are hinged through connecting rod two (24).

7. The cold-rolled strip steel pre-oxidation device of claim 1, wherein, The feeding port (2) and the discharging port (3) are respectively provided with guide wheels (25).

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