Device for conveying steel plates in pickling tank

Abstract

The utility model discloses a device for conveying a steel plate in a pickling tank, which comprises a support frame and a roller way, and the support frame is of a cuboid frame structure formed by connecting a tank body structure and a steel structure, is placed in the pickling tank and is used for supporting the roller way; the roller way comprises a lower roller way and a side leaning roller; a lower roller way is arranged at the bottom of the support frame, and a side leaning roller is arranged on the side surface of the support frame; the lower roller way consists of a plurality of roller ways which are arranged in parallel, the roller ways are obliquely arranged and are in direct contact with acid liquor, and the upper surfaces of the roller ways are in contact with the lower edge part of the steel plate; the side leaning roller consists of a plurality of inclined roller ways which are arranged in parallel, and the roller ways are obliquely arranged, so that the side surface of the steel plate can completely lean against the side leaning roller; and the lower roller way and the side leaning rollers are connected with gear motors and are driven by the gear motors to operate. According to the device, the steel plate is vertically conveyed in the acid tank, and the two surfaces of the steel plate can be conveniently observed, ground, simply machined and the like; and the acid liquor circulation is facilitated, so that the acid pickling surface quality is improved.

Description

Technical Field

[0001] The utility model relates to a device for conveying steel plates in a pickling tank, belonging to the field of machinery. Background Art

[0002] The pickling treatment of the surface of stainless steel medium and thick plates is a necessary process for the production of hot-rolled plates. During the pickling process, mixed acid or sulfuric acid is used to chemically treat the surface of the steel plate. The steel plate needs to be continuously transported in the acid tank, and then the spray pipe installed in the acid tank sprays the acid liquid onto the steel plate through the pump group to complete the chemical treatment. Since the conventional transportation method is to transport the steel plate horizontally, the upper and lower surfaces of the steel plate need to be inspected, ground, simply processed or pickled after pickling, and the steel plate must be turned over by using a flap or other equipment, which leads to an increase in equipment investment and an increase in labor.

[0003] To this end, technicians conducted analysis and experiments and developed a device for conveying steel plates in pickling tanks. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model provides a device for conveying steel plates in a pickling tank, which is used for continuous pickling of hot-rolled finished stainless steel medium and thick plates; the utility model provides industrial enterprises with a solution for conveying medium and thick plates in the acid tank, so that the steel plates are conveyed at an angle in the acid tank and pickled, and at the same time connected to a continuous production line, thereby improving production efficiency.

[0005] The present invention provides a device for conveying steel plates in a pickling tank, comprising a support frame and several groups of support rollers with inclined angles, so that the steel plates can run smoothly at a certain inclined angle. Personnel can stand on both sides of the steel plates to perform related operations on the steel plates, eliminating the turning operation and improving the pickling efficiency.

[0006] The utility model provides a device for conveying steel plates in a pickling tank, comprising a support frame and a roller conveyor. The support frame is a rectangular parallelepiped frame structure formed by connecting a tank structure and a steel structure, and is placed in the pickling tank to support the roller conveyor. The roller conveyor comprises a lower roller conveyor and side rollers.

[0007] A lower roller is provided at the bottom of the support frame, and a side roller is provided on the side of the support frame; the lower roller is composed of a plurality of rollers arranged in parallel, which are placed at an inclination of 5-10 degrees, the roller is in direct contact with the acid solution, and the upper surface of the roller is in contact with the lower edge of the steel plate; the side roller is composed of a plurality of inclined rollers arranged in parallel, which are placed at an inclination of 5-10 degrees, so that the side of the steel plate can completely rest on the side roller;

[0008] The lower roller and the side rollers are both connected to gear motors, which drive them to run.

[0009] Furthermore, the steel structure is fixed to the ground by anchor bolts; the lower roller, as the main component for transporting steel plates, is connected to the steel structure by bolts, and the angle between the lower roller and the horizontal direction is 5-10°; the upper bearing seat of the side roller is connected to the steel structure by bolts, and the bottom of the side roller is directly inserted into the supporting base body, and the angle between the side roller and the vertical direction is 5-10°.

[0010] Furthermore, the angle formed by the side roller and the lower roller is 85-90°.

[0011] Furthermore, the side rollers and the lower roller table are driven by motors and controlled by frequency converters and encoders to ensure consistent speeds and smooth transportation of the steel plates.

[0012] Furthermore, the inner core shaft of the roller is composed of low-carbon alloy steel, and a sealing layer needs to be wrapped around the outside of the low-carbon alloy steel.

[0013] Furthermore, the support base is welded to the bottom of the trough structure as a whole.

[0014] The steel plate runs continuously in the acid tank, the lower edge of the steel plate contacts the lower conveyor roller, the side of the steel plate contacts the side rollers, the rollers are driven by gear motors, and all of these rollers are in the acid spray, so that the steel plate can run continuously and be pickled.

[0015] The device for conveying steel plates in a pickling tank provided by the utility model has the following beneficial effects:

[0016] The device realizes the vertical transportation of steel plates in the acid tank, which is convenient for observation, grinding and simple processing on both sides of the steel plates; it is also conducive to the circulation of acid liquid, thereby improving the surface quality of pickling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 for Figure 1 Left view of;

[0019] Figure 3 for Figure 1 A top view of

[0020] Figure 4 It is a schematic diagram of the structure of the lower roller table;

[0021] Figure 5 It is a schematic diagram of the structure of the side support roller.

[0022] In the figure: 1. side roller, 2. trough structure, 3. steel structure, 4. lower roller, 5. steel plate, 6. motor, 7. sealing layer, 8. first bearing, 9. second bearing, 10. sprocket transmission part, 11. third bearing, 12. support base. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Example

[0024] like Figures 1 to 5 As shown, the utility model provides a device for conveying steel plates in a pickling tank, comprising a support frame and a roller conveyor. The support frame is a rectangular parallelepiped frame structure formed by connecting a tank structure 2 and a steel structure 3, and is placed in the pickling tank to support the roller conveyor. The roller conveyor comprises a lower roller conveyor 4 and a side roller 1.

[0025] The support frame is composed of a tank structure 2 and a steel structure 3, a lower roller 4 is provided at the bottom of the support frame, and a side leaning roller 1 is provided on the side of the support frame. In the utility model, the lower roller 4 is composed of a plurality of rollers arranged in parallel, which form a certain angle (5-10°) with the horizontal direction, the roller is in direct contact with the acid liquid, and the upper surface of the roller is in contact with the lower edge of the steel plate 5; the side leaning roller 1 is composed of a plurality of inclined rollers arranged in parallel, which form a certain angle (5-10°) with the vertical direction, so that the side of the steel plate 5 can completely lean on the side leaning roller 1;

[0026] The lower roller table 4 and the side roller 1 are both connected to a gear motor 6, and are driven by the gear motor 6 to operate.

[0027] The steel structure 3 is fixed to the ground by anchor bolts as the load-bearing part of the entire support frame; the lower roller 4, as the main component for transporting steel plates, is connected to the steel structure 3 by bolts, the angle between the lower roller 4 and the horizontal direction is 5-10°, and it is connected to the tank structure 2 by its own seal to prevent acid liquid from overflowing; the side roller 1 is connected to the steel structure 3 as another part for transporting steel plates, the third bearing seat 11 on the upper part of the side roller 1 is connected to the steel structure 3 by bolts, and is directly inserted into the support base 12 body below, the angle between the side roller 1 and the vertical direction is 5-10°, and it is connected to the tank structure 2 by its own seal to prevent acid mist from overflowing.

[0028] Among them: The lower roller structure is as follows: Figure 4 As shown: the bottom of the steel plate 5 contacts the lower roller 4, and a sealing layer is provided on the lower roller 4. The functions of the sealing layer are: first, it is welded with the tank structure to block acid, and second, it is connected with the roller to seal. A sprocket drive part 10 is provided at the end of the lower roller, which is connected to the motor 6 and driven by a chain.

[0029] Side roller structure Figure 5 As shown, the lower edge of the steel plate 5 contacts the lower roller 4, and the lower roller 4 bears most of the weight of the steel plate 5; the side of the steel plate 5 contacts the side support roller 1, and the side support roller 1 bears the rest of the weight of the steel plate; the side support roller 1 and the lower roller 4 form an angle of 85-90° to each other, which can ensure that the center of gravity of the steel plate 5 falls entirely on the roller without falling; during transportation, both parts of the roller are driven by a motor, and are controlled by a frequency converter and feedback from an encoder to ensure relatively consistent speeds and smooth transportation of the steel plate. The support base 12 is directly welded to the bottom of the tank structure 2. Figure 5 In the specific example shown, the angle between the lower roller and the horizontal direction is about 10°, the angle between the side roller and the vertical direction is 5°; and an angle of 85° is formed between the side roller and the lower roller.

[0030] The specific instructions are as follows:

[0031] The lower conveying roller is composed of several rollers with gear motors. These rollers are inclined at a certain angle. Since the roller is in direct contact with the acid, the material needs to be a high-temperature alloy material, which is composed of nickel, chromium and iron. It needs to have excellent heat resistance and corrosion resistance, and needs to have good strength, toughness and impact resistance. The internal mandrel can be made of high-quality low-carbon alloy steel. In order to prevent the internal mandrel from being corroded by the acid, the outside needs to be wrapped with a sealing layer 7, such as an engineering plastic PFTE protective layer or a PPH protective layer, and the sealing material needs to be connected to the tank body to ensure that the acid does not overflow to the outside of the acid tank.

[0032] Side leaning roller: It is composed of several rollers with gear motors. These rollers are inclined at a certain angle so that the steel plate can lean completely on them. The core shaft of the roller can be made of high-quality low-carbon alloy steel to ensure sufficient strength and toughness. In order to prevent the internal core shaft from being corroded by acid, the outside needs to be wrapped with sealing materials such as engineering plastics or PPH, and the sealing material needs to extend to the outside of the tank to prevent corrosion by acid mist.

[0033] The 4300mm medium and thick plate production line of the hot rolling mill of Shanxi Taigang Stainless Steel Co., Ltd. has developed a pickling line conveyor roller according to the utility model device, which includes a lower conveyor roller, a side roller and other parts. The specific design of the device is as follows:

[0034] Lower conveyor roller

[0035] project describe Roller Specifications Ф225mm×906mm Roller spacing 800mm Roller surface elevation FL+0.806m Roller speed 1-10m / min Roller material High temperature alloy materials, nickel, chromium, iron alloys Package sealing material PFTE .

[0036] Side roller

[0037] project describe Roller Specifications Ф225mm×4300mm Roller spacing 800mm Roller speed 1-10m / min Roller material 45 steel Package sealing material PPH .

[0038] The process is as follows: the steel plate stands on the lower roller and leans against the side roller at a certain angle. The two rollers are driven by a gear motor to run at a certain speed in the acid tank for pickling. Because the center of gravity of the steel plate is shifted after tilting at a certain angle, it can lean against the roller and run smoothly to avoid tipping over.

Claims

1. A device for conveying steel plates in a pickling tank, characterized in that: It includes a support frame and a roller. The support frame is a rectangular frame structure composed of a tank structure and a steel structure connected to form a rectangular frame structure, which is placed in the pickling tank and is used to support the roller. The roller includes a lower roller and side rollers. The lower roller is provided at the bottom of the support frame, and the side rollers are provided on the sides of the support frame. The lower roller is composed of a number of parallel rollers, which are inclined at 5-10 degrees. The rollers are in direct contact with the acid solution, and the upper surfaces of the rollers are in contact with the lower edges of the steel plates. The side rollers are composed of a number of parallel inclined rollers, which are inclined at 5-10 degrees, so that the sides of the steel plates can completely lean on the side rollers. The lower roller and the side rollers are both connected to gear motors, and are driven by the gear motors to operate.

2. The device for conveying steel plates in a pickling tank according to claim 1, characterized in that: The steel structure is fixed to the ground by anchor bolts; the lower roller, as the main component for transporting steel plates, is connected to the steel structure by bolts, and the angle between the lower roller and the horizontal direction is 5-10°. The upper bearing seat of the side roller is connected to the steel structure by bolts, and the bottom of the side roller is directly inserted into the supporting base body, and the angle between the side roller and the vertical direction is 5-10°.

3. The device for conveying steel plates in a pickling tank according to claim 2, characterized in that: The angle between the side roller and the lower roller is 85-90°.

4. The device for conveying steel plates in a pickling tank according to claim 1, characterized in that: The side rollers and the lower roller table are driven by motors and controlled by frequency converters and encoders to ensure consistent speed and smooth transportation of steel plates.

5. The device for conveying steel plates in a pickling tank according to claim 1, characterized in that: The inner core shaft of the roller table is composed of low-carbon alloy steel, and a sealing layer is arranged on the outside of the low-carbon alloy steel.

6. The device for conveying steel plates in a pickling tank according to claim 1, characterized in that: The supporting base is welded to the bottom of the tank structure as a whole.

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