Stainless steel plate cooling spray device

Abstract

This invention provides a stainless steel plate cooling spray device, including a base through which the stainless steel plate passes. Multiple conveyor rollers are arranged at intervals on the upper surface of the base. The stainless steel plate passes over the base via the conveyor rollers. A lower spray pipe is provided between any adjacent conveyor rollers, and all lower spray pipes are connected to a water source. Multiple water nozzles are provided on the sides of both the lower and upper spray pipes, with the nozzles on the lower spray pipes facing upwards and those on the upper spray pipes facing downwards. The water spray from both the lower and upper spray pipes occurs only when the stainless steel plate passes through. This invention uses the upper and lower spray pipes to spray water onto the stainless steel plate only as it passes through, cooling it. After being heated and held at 980–1150°C using a solution treatment process, the stainless steel plate is cooled in the spray zone, resulting in a temperature of 600°C–800°C.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel plate processing technology, specifically to a stainless steel plate cooling spray device. Background Technology

[0002] Austenitic stainless steel refers to stainless steel that has an austenitic structure at room temperature. The pressure processing flow for ordinary austenitic stainless steel plates involves the following steps: slab heating, rolling, solution heat treatment, straightening, shot blasting, pickling, manual grinding, and packaging. The main purpose of solution heat treatment is to obtain good performance characteristics. For ordinary austenitic stainless steel, the austenitic stainless steel is heated to 1000–1150℃ to dissolve all carbides into the austenite, followed by water cooling or rapid cooling to obtain a single-phase austenitic structure. The solution heat treatment process for stainless steel plates, including the quenching and cooling process, primarily determines the internal properties of ordinary austenitic stainless steel plates and also significantly affects the flatness of the plate. Currently, commonly used quenching and cooling equipment for solution heat treatment of ordinary austenitic stainless steel plates includes medium-thick plate roller quenching machines and unconstrained quenching controlled cooling equipment. Therefore, current quenching and cooling equipment is divided into two types:

[0003] 1. Roller quenching machines transport stainless steel plates via roller conveyors into a water spray zone for quenching. The stainless steel plates are quenched while in motion. While roller quenching machines offer a high cooling rate, they suffer from the following technical drawbacks: complex processes, difficulty in controlling the cooling process, high cost for medium and heavy plate roller quenching machines, high water consumption for strong cooling, and the requirement for a quenching machine with a capacity of approximately 7000m³. 3 A water supply capacity of over / h is required to meet the quenching requirements of stainless steel, resulting in high water consumption. As the thickness of the stainless steel plate increases, the cost of the quenching equipment also increases significantly.

[0004] 2. Unconstrained quenching and controlled cooling equipment transports stainless steel plates via roller conveyors into a water spray zone for quenching. The stainless steel plates undergo quenching while in motion. Its advantages include a high cooling rate, simple process, and low difficulty in controlling the cooling process. Due to its unconstrained nature, the equipment is less expensive, requiring a water supply capacity of 900m³. 3 While the water supply is less than that of a roller quenching machine, it has the following technical drawbacks: continuous spraying in the spray zone when no stainless steel plate passes by results in slightly higher water consumption and higher production costs.

[0005] The common feature of the two quenching and cooling devices mentioned above is that they cool austenitic stainless steel plates from 1000–1150℃ to 50–150℃. Therefore, how to design a stainless steel plate cooling spray device to pre-cool the stainless steel plate before it is placed in another cooling device has become an urgent problem to be solved. Utility Model Content

[0006] In view of the problems existing in the prior art, this utility model provides a stainless steel plate cooling spray device to solve at least one of the above-mentioned technical problems.

[0007] The technical solution of this utility model is: a stainless steel plate cooling spray device, including a base that allows stainless steel plates to pass through. Multiple conveying rollers are arranged at intervals on the upper surface of the base. The conveying rollers are made of hot-rolled seamless steel pipes. The stainless steel plates pass through the base from the conveying rollers. A lower spray pipe is provided between any adjacent conveying rollers. All lower spray pipes are connected to one end of a vertical water pipe through a horizontal water pipe. A water source is connected to the middle of the vertical water pipe. The other end of the vertical water pipe is connected to an upper spray pipe.

[0008] Multiple spray nozzles are installed on the sides of both the lower and upper spray pipes. The spray nozzles on the lower spray pipe are arranged upwards, while the spray nozzles on the upper spray pipe are arranged downwards. The spray nozzles on the lower and upper spray pipes spray only when the stainless steel plate passes by.

[0009] This invention employs multiple conveyor rollers spaced apart on the upper surface of a base. Stainless steel plates pass over the base via these rollers. A lower spray pipe is positioned between adjacent rollers, with spray nozzles on the lower pipe facing upwards and those on the upper spray pipe facing downwards. These spray nozzles are used to cool the stainless steel plates on the rollers. The inward spraying of water from both the upper and lower pipes enhances the cooling effect, as the flowing water further improves the cooling process. Pre-cooling of the stainless steel plates (from 980-1150℃ to 600-800℃) is achieved only when the plates pass over them, solving the technical drawback of unconstrained quenching and cooling equipment where continuous spraying during non-passage operation results in higher water consumption and production costs. The conveyor rollers are made of hot-rolled seamless steel pipes, resulting in a lower surface roughness Ra and reducing the risk of scratching the lower surface of the stainless steel plates during transport. Attached Figure Description

[0010] Figure 1 This is a three-dimensional view of the installation structure of this utility model.

[0011] Figure 2 This is the front view of the present invention.

[0012] Figure 3 This is a three-dimensional view of the conveyor roller of this utility model.

[0013] Figure 4 for Figure 1 A magnified view of part A.

[0014] Figure 5 This is a three-dimensional view of the lower spray pipe of this utility model.

[0015] In the diagram: 1. Base; 2. First support seat; 3. First chain; 4. Lower spray pipe; 5. Horizontal water pipe; 6. Vertical water pipe; 7. Support rod; 8. Conveyor roller; 9. Third sprocket; 10. Motor; 11. Upper spray pipe; 12. Support plate; 13. Fourth sprocket; 14. Fifth sprocket; 41. Spray nozzle; 81. Rotating rod; 83. Second sprocket. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] See Figure 1-5 The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0018] Example 1: A stainless steel plate cooling spray device, referenced Figure 1 , Figure 2 , Figure 5 The system includes a base 1 that allows stainless steel plates to pass through. Multiple conveying rollers 8 are arranged at intervals on the upper surface of the base 1. The conveying rollers 8 are made of hot-rolled seamless steel pipes. The stainless steel plates pass through the base 1 from the conveying rollers 8. A lower spray pipe 4 is provided between any adjacent conveying rollers 8. All lower spray pipes 4 are connected to one end of a vertical water pipe 6 through a horizontal water pipe 5. A water source is connected to the middle of the vertical water pipe 6. The other end of the vertical water pipe 6 is connected to the upper spray pipe 11.

[0019] Multiple spray nozzles 41 are provided on the sides of both the lower spray pipe 4 and the upper spray pipe 11. The spray nozzles 41 on the lower spray pipe 4 are arranged upwards, and the spray nozzles 41 on the upper spray pipe 11 are arranged downwards. The spray nozzles 41 of the lower spray pipe 4 and the spray nozzles 41 of the upper spray pipe 11 spray only when the stainless steel plate passes by. This invention employs multiple conveyor rollers spaced apart on the upper surface of a base. Stainless steel plates pass over the base via these rollers. A lower spray pipe is positioned between adjacent rollers, with spray nozzles on the lower pipe facing upwards and those on the upper spray pipe facing downwards. These spray nozzles are used to cool the stainless steel plates on the rollers. The inward spraying of water from both the upper and lower pipes enhances the cooling effect, as the flowing water further improves the cooling process. Pre-cooling of the stainless steel plates (from 980-1150℃ to 600-800℃) is achieved only when the plates pass over them, solving the technical drawback of unconstrained quenching and cooling equipment where continuous spraying during non-passage operation results in higher water consumption and production costs. The conveyor rollers are made of hot-rolled seamless steel pipes, resulting in a lower surface roughness Ra and reducing the risk of scratching the lower surface of the stainless steel plates during transport.

[0020] Example 2: Based on Example 1, the bottom surfaces of all the lower spray pipes 4 are flush, and the top surface of any one of the lower spray pipes 4 is lower than the top surface of the conveyor roller 8; the end of the lower spray pipe 4 near the transverse water pipe 5 is mounted on the base 1 via a second support. This invention uses a lower spray pipe with its top surface lower than the top surface of the conveyor roller, which facilitates the conveying of the stainless steel plate on the conveyor roller, while also creating a distance between the lower spray pipe and the stainless steel plate, allowing the spray nozzles on the lower spray pipe to spray water to cool and lower the temperature of the passing stainless steel plate.

[0021] Example 3: Based on Example 1, the upper surface of the base 1 is provided with multiple sets of spaced support structures. Each set of support structures includes symmetrically arranged first support seats 2, and each conveying roller 8 is mounted on the symmetrically arranged first support seats 2. This utility model uses symmetrically arranged first support seats to form a set of support structures. The symmetrically arranged first support seats can be used to install both ends of the conveying rollers and to support them. The conveying rollers are used to convey stainless steel plates placed on them.

[0022] Example 4: Based on Example 3, with reference to... Figure 3 Each of the conveying rollers 8 has a rotating rod 81 on both sides, and the rotating rods 81 on both sides of the same conveying roller 8 are respectively mounted on the first support seats 2 arranged symmetrically. This utility model uses rotating rods on both sides of the conveying roller, which are mounted on the first support seats arranged symmetrically to support the conveying roller.

[0023] Example 5: Based on Example 4, with reference to... Figure 4 Each of the conveying rollers 8 is equipped with a second sprocket 83. All second sprockets 83 are located on the side away from the transverse water pipe 5. Each second sprocket 83 is located on the side of the first support 2 away from the conveying roller 8. All second sprockets 83 are located on the top surface of the closed first chain 3. The first support 2 is a first bearing seat. This utility model uses a rotating rod on the side away from the transverse water pipe to connect the second sprockets via a second key. The top surface of the closed first chain connects to all the second sprockets, enabling the first chain to drive all the conveying rollers for conveying.

[0024] Example 6: Based on Example 5, support rods 7 are provided at each of the four corners of the base 1. A support plate 12 is provided on the upper surface of all support rods 7. A third bearing seat and a third sprocket 9 are respectively provided on the two support rods 7 near the end face of the second sprocket 83. The third sprocket 9 is mounted on the third shaft. The two ends of the third shaft are respectively mounted on a pair of third bearing seats. The third sprocket 9 is lower than the second sprocket 83. The two third sprockets 9 and all the second sprockets 83 are on the same vertical plane. The two third sprockets 9 are located within the closed first chain 3. In this utility model, the second sprocket is located on the side of the first support base away from the conveyor roller; the two third sprockets are respectively mounted on the third shaft through a third key. The two third sprockets are located within the closed first chain. The movement of the first chain drives the second sprocket on the top surface of the first chain to rotate.

[0025] Example 7: Based on Example 6, a motor mounting base is installed in the middle of the lower surface of the base 1 via a connecting frame. A motor 10 is mounted on the motor mounting base. The output end of the motor 10 is equipped with a drive gear, which meshes with a driven gear. The two ends of the driven gear's mounting shaft are respectively mounted on paired second bearing seats. The second bearing seats are mounted on the connecting frame. A drive sprocket is mounted on the driven gear's mounting shaft. The drive sprocket and the third sprocket 9 are on the same vertical plane, and the drive sprocket is located within the closed first chain 3. This invention uses a sixth key to connect the motor's output end to the drive gear, which meshes with the driven gear. The driven gear is connected to its mounting shaft via a seventh key. An eighth key connects the driven sprocket to the mounting shaft of the driven gear. The drive sprocket is connected to the third sprocket via the first chain, enabling the motor to drive all the second sprockets on the top surface of the first chain to rotate synchronously, thereby achieving the conveying of the stainless steel plate.

[0026] Example 8: Based on Example 7, a fourth sprocket 13 is provided between each of the two third sprockets 9 and the connecting frame. The fourth sprocket 13 is mounted on the fourth shaft via a fourth key. The two ends of the fourth shaft are respectively mounted on a pair of fourth bearing seats. The fourth bearing seats are located on the extension plate on the lower surface of the base 1. The fourth sprocket 13 is lower than the third sprocket 9 and higher than the drive sprocket. The fourth sprocket 13 and the third sprocket 9 are on the same vertical plane. A fifth bearing seat and a fifth sprocket 14 are respectively provided on both sides of the motor mounting base. The fifth sprocket 14 is mounted on the fifth shaft via a fifth key. The two ends of the fifth shaft are respectively mounted on the fifth bearing seat. The fifth sprocket 14 is lower than the drive sprocket. The fourth sprocket 13 and the fifth sprocket 14 are both located within the closed first chain 3. This invention employs support rods at the four corners of the base, which are connected to a support plate. A control box is located on one of the support rods near the motor. A forward button on the control box controls the motor's forward rotation, a backward button controls its reverse rotation, and a stop button stops the motor. By using the stop button, the motor stops rotating when the stainless steel plate passes through the spray area on the conveyor roller, and water is sprayed onto the stainless steel plate through the lower and upper spray pipes. The forward and backward buttons allow the stainless steel plate to move forward or backward on the conveyor roller, and water is sprayed onto the stainless steel plate through the lower and upper spray pipes. A solenoid valve is installed on the vertical water pipe to control the continuous spraying of the spray system. Water, or intermittent water spraying; a fourth sprocket is installed on an extension plate on the lower surface of the base, the fourth sprocket is lower than the third sprocket and higher than the drive sprocket; a fifth sprocket is installed on both sides of the motor mounting base, the fifth sprocket is lower than the drive sprocket, and the fourth and fifth sprockets are both located within the closed first chain; the first chain sequentially connects the drive sprocket, the fifth sprocket on one side, the fourth sprocket on one side, the third sprocket on one side, the third sprocket on the other side, the fourth sprocket on the other side, the fifth sprocket on the other side, and finally returns to the drive sprocket to form a closed loop connection, realizing the synchronous rotation of all the second sprockets on the top surface of the first chain driven by the motor, thereby realizing the conveying of stainless steel plates.

[0027] Example 9: Based on Example 8, all the upper spray pipes 11 are located on the lower surface of the support plate 12. This invention uses a support plate to install the upper spray pipes and positions them accordingly.

[0028] Example 10: Based on Example 1, the number of lower spray pipes 4 and upper spray pipes 11 is the same, and the lower spray pipes 4 and upper spray pipes 11 are arranged in a one-to-one correspondence. This utility model uses the same number of lower spray pipes and upper spray pipes, arranged in a one-to-one correspondence, with the lower and upper spray pipes cooperating to spray and cool the stainless steel plate passing between them.

[0029] In specific implementation, the stainless steel plates processed by this utility model are of the 304 series, 316 series, and 321 series, with a thickness of 6~112mm, a width of 1000~3800mm, and a length of 2000~12800mm.

[0030] The working principle of this utility model is as follows: In the stainless steel plate processing system, the hot-rolled stainless steel plate is first heated and held at a certain temperature according to the solution treatment process, and then exits the solution heat treatment furnace. The stainless steel plate runs on the roller conveyor to the spray zone roller conveyor, and is then conveyed to the first conveyor roller 8 by the equipment. The motor 10 is started, and the rotation of the motor 10 drives the first conveyor roller 8 to rotate. The forward speed of the stainless steel plate in the spray zone is 0.8 to 6 m / min. At this time, cooling begins, and the temperature of the stainless steel plate is 980 to 1150℃. The plate is cooled by water injection equipment. Water is injected into the upper spray pipe 11 and the lower spray pipe 4 to spray and cool the stainless steel plate passing between them. The upper spray pipe 11 and the lower spray pipe 4 work together to cool both sides of the stainless steel plate simultaneously. After spray cooling, the stainless steel plate is transported to another device for further cooling. After spray cooling, it passes through the other device, which reduces the temperature of the stainless steel plate (600℃~800℃) in the spray zone to below 100℃. The total water supply of this equipment's water supply system and the other equipment's water supply system is 800m³. 3 / h, working water pressure is 0.1~0.15MPa; the temperature of stainless steel plates of different thicknesses before and after the end of the spraying zone is shown in the table below.

[0031] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A stainless steel plate cooling spray device, comprising a base (1) through which a stainless steel plate can pass, characterized in that: The upper surface of the base (1) is provided with multiple conveying rollers (8) arranged at intervals. The conveying rollers (8) are made of hot-rolled seamless steel pipes. Stainless steel plates pass through the base (1) from the conveying rollers (8). A lower spray pipe (4) is provided between any adjacent conveying rollers (8). All lower spray pipes (4) are connected to one end of a vertical water pipe (6) through a horizontal water pipe (5). A water source is connected to the middle of the vertical water pipe (6). The other end of the vertical water pipe (6) is connected to the upper spray pipe (11). Multiple spray nozzles (41) are provided on the sides of both the lower spray pipe (4) and the upper spray pipe (11). The spray nozzles (41) on the lower spray pipe (4) are arranged upwards, and the spray nozzles (41) on the upper spray pipe (11) are arranged downwards. The spray nozzles (41) on the lower spray pipe (4) and the spray nozzles (41) on the upper spray pipe (11) spray only when the stainless steel plate passes by.

2. The stainless steel plate cooling spray equipment according to claim 1, characterized in that: The bottom surfaces of all the lower spray pipes (4) are flush, and the top surface of any one of the lower spray pipes (4) is lower than the top surface of the conveyor roller (8).

3. The stainless steel plate cooling spray equipment according to claim 1, characterized in that: The upper surface of the base (1) is provided with multiple sets of support structures arranged at intervals. Each set of support structures includes a first support seat (2) arranged symmetrically, and any one of the conveying rollers (8) is installed on the first support seat (2) arranged symmetrically.

4. The stainless steel plate cooling spray equipment according to claim 3, characterized in that: Rotating rods (81) are provided on both sides of any one of the conveying rollers (8), and the rotating rods (81) on both sides of the same conveying roller (8) are respectively installed on the first support seat (2) arranged symmetrically.

5. A stainless steel plate cooling spray device according to claim 4, characterized in that: Each of the conveying rollers (8) is provided with a second sprocket (83). All the second sprockets (83) are located on the side away from the transverse water pipe (5). Each second sprocket (83) is located on the side of the first support seat (2) away from the conveying roller (8). All the second sprockets (83) are located on the top surface of the closed first chain (3).

6. The stainless steel plate cooling spray equipment according to claim 5, characterized in that: The base (1) is provided with support rods (7) at all four corners. All the support rods (7) are provided with a support plate (12) on their upper surfaces. The two support rods (7) near the end face of the second sprocket (83) are respectively provided with third sprockets (9). The third sprockets (9) are lower than the second sprockets (83). The two third sprockets (9) are on the same vertical plane as all the second sprockets (83). The two third sprockets (9) are located in the closed first chain (3).

7. A stainless steel plate cooling spray device according to claim 6, characterized in that: The base (1) has a motor mounting seat installed in the middle of its lower surface via a connecting frame. A motor (10) is mounted on the motor mounting seat. The output end of the motor (10) is provided with a drive gear. The drive gear meshes with the driven gear. A drive sprocket is provided on the mounting shaft of the driven gear. The drive sprocket and the third sprocket (9) are on the same vertical plane. The drive sprocket is located inside the closed first chain (3).

8. A stainless steel plate cooling spray device according to claim 7, characterized in that: A fourth sprocket (13) is provided between each of the two third sprockets (9) and the connecting frame. The fourth sprocket (13) is located on the extension plate on the lower surface of the base (1). The fourth sprocket (13) is lower than the third sprocket (9) and higher than the drive sprocket. The fourth sprocket (13) and the third sprocket (9) are on the same vertical plane. The motor mounting base is provided with a fifth sprocket (14) on each side. The fifth sprocket (14) is lower than the drive sprocket. The fourth sprocket (13) and the fifth sprocket (14) are both located in the closed first chain (3).

9. A stainless steel plate cooling spray device according to claim 8, characterized in that: All of the above-spray pipes (11) are located on the lower surface of the support plate (12).

10. A stainless steel plate cooling spray device according to claim 1, characterized in that: The number of the lower spray pipes (4) is the same as that of the upper spray pipes (11), and the lower spray pipes (4) and the upper spray pipes (11) are arranged in a one-to-one correspondence.

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