CN212216611U - Strip descaling production line - Google Patents

Abstract

The utility model provides a belted steel descaling production line, this belted steel descaling production line includes: the uncoiler, the straight head straightener, the sand-throwing descaler, the strip steel cleaning device, the drying equipment and the coiler are sequentially arranged along the advancing direction of the strip steel; flying shears and a slitting machine are arranged between the drying equipment and the coiling machine, and the flying shears and the slitting machine are arranged in the front and back direction of the strip steel advancing direction. Through the utility model discloses to after carrying out the surface descaling to thick specification belted steel and handling, can make into required width or required length with it, be favorable to reducing to open a book and batch the operation, reduce production process, energy saving medium.

Description

Strip descaling production line

technical field

The utility model relates to the technical field of rolling strip steel, in particular to a strip steel descaling production line.

Background technique

Hot rolled coils need to undergo surface descaling treatment before entering cold rolling mills for rolling or direct galvanizing. Chemical pickling process is a very mature surface descaling treatment method, but during pickling, the discharge of acid mist and waste acid will cause pollution and damage to the environment. In order to ensure that the emission reaches the standard (less than HCL 15mg/Nm ³ ), the construction of a chemical pickling unit needs to be equipped with corresponding acid regeneration and wastewater treatment plants. Even so, there is still acid mist emission; acid regeneration itself will also emit a large amount of waste gas. It not only destroys the environment, but also affects the lives of surrounding people; it also seriously corrodes the workshop. Other surface descaling treatment methods include: high-pressure water descaling, sand blasting descaling, hydrogen reduction rust removal and laser descaling methods; these surface descaling treatment methods have the advantage of being more environmentally friendly.

Thick gauge strip usually refers to strip steel with a thickness of 4mm to 16mm. Thick gauge strip is usually pickled by single-block immersion, resulting in low output and serious environmental pollution. Pickling time, which results in the need to configure many acid tanks to meet the production speed and output.

Thick gauge strip steel can be subjected to surface descaling treatment by using the process method of sand blasting and descaling shown in Figure 1a, or the process method of sand blasting and descaling shown in Figure 1b.

Typically, thick gauge strip is coiled after surface treatment for easy storage and delivery to downstream users. In some cases, downstream users need strips of different widths or lengths. At this time, the coiled strips need to be uncoiled and slit again, which increases the production process. Uncoiling and coiling of thick-gauge strips are more difficult and require more energy and media.

Utility model content

The purpose of this utility model is to provide a strip steel descaling production line, so that after the surface descaling treatment is performed on the thick gauge strip steel, it can be made into the required width or required length, which is beneficial to reduce the uncoiling and coiling operations. , reduce production processes and save energy media.

Above-mentioned purpose of the present utility model can adopt following technical scheme to realize:

The utility model provides a strip steel descaling production line, comprising: an uncoiler, a straight head straightener, a sand blasting and descaling machine, a strip steel cleaning device, a drying device and a coiler, which are sequentially arranged along the advancing direction of the strip steel; A flying shear and a slitting machine are arranged between the drying equipment and the coiler, and the flying shears and the slitting machine are arranged back and forth along the advancing direction of the strip.

In a preferred embodiment, the slitting machine is located between the flying shears and the coiler.

In a preferred embodiment, a conveying belt and a stacking table are provided after the flying shears, and the conveying belt is used for conveying the strip steel cross-cut by the flying shears to the stacking table.

In a preferred embodiment, the slitting machine is followed by a looper guide table.

In a preferred embodiment, an oiler is provided before the coiler.

In a preferred embodiment, double pinch rollers are provided before the oiler.

In a preferred embodiment, a multi-roller leveler is provided between the sand blasting and descaling machine and the straight-head leveler, and the multi-roller leveler includes an upper leveling roller group and a lower leveling roller set arranged up and down. Leveling roll group, the strip steel is repeatedly bent during the process of passing between the upper leveling roll group and the lower leveling roll group; the upper leveling roll group includes at least four upper leveling work rolls , at least four of the upper leveling work rolls are arranged in sequence along the advancing direction of the strip; the lower leveling roll group includes at least five lower leveling work rolls, and at least five of the lower leveling work rolls are arranged along the The advancing directions of the strip steel are arranged in sequence, and are staggered with at least four of the upper leveling work rolls.

In a preferred embodiment, two upper support roller sets are provided above each of the upper leveling work rolls, and two lower support roll sets are provided below each of the lower leveling work rolls.

In a preferred embodiment, the upper leveling roller group is connected with a pressing cylinder, and the pressing cylinder is used to drive the upper leveling roller group to move up and down above the lower leveling roller group.

In a preferred embodiment, a pre-brushing device is provided between the multi-roller leveler and the sand blasting and descaling machine, and the pre-brushing device includes at least one upper brushing roller and at least one lower brushing roller. Passable between the upper scrubbing roller and the lower scrubbing roller.

In a preferred embodiment, the multi-roller leveler is provided with a lifting head device, the lifting head device includes a lower guide plate, a lifting head plate, an upper pressing plate, a pressing cylinder and a lifting head cylinder, the lower guide plate and The rocker plates are sequentially distributed along the advancing direction of the strip; the pressing cylinder is connected with the upper pressing plate, and can drive the upper pressing plate to move toward the lower guide plate, so as to press the strip steel against the lower plate. the guide plate; the rocker cylinder is connected with the rocker plate, and can drive the rocker plate to move upward, so that the strip steel located on the rocker plate is lifted upwards.

In a preferred embodiment, a cutting shear is provided between the head-lifting device and the straightening machine.

The features and advantages of the present utility model are:

When the strip steel is descaled in the strip steel descaling production line provided by the utility model, the strip steel sequentially passes through the uncoiler, the straight head straightener, the sand blasting and descaling machine, the strip steel cleaning device and the drying equipment. The strip is subjected to surface descaling treatment in sand blasting and descaling machines, strip cleaning devices and drying equipment, and is cleaned and dried.

In this strip steel descaling production line, after the strip steel passes through the drying equipment, it can enter the flying shears for cross-cutting, so as to realize cut-to-length cutting or tail-cutting, and obtain the strip steel of the required length.

The strip can also enter the slitting machine for slitting to obtain the required width of the strip, and the strip after slitting can enter the coiler for coiling.

The strip can also pass through the flying shear and slitting machine and enter the coiler for coiling.

The strip steel descaling production line has the functions of cross-cutting and slitting. Coils, with various products, are beneficial to reduce uncoiling and coiling operations and production processes, especially for thick gauge strip steel, which has a good effect of saving energy media.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1a is a kind of step diagram of the processing method of sand blasting and descaling;

Fig. 1b is the step diagram of another kind of technological method of sand blasting and descaling;

Fig. 2 is the schematic diagram of the strip steel descaling production line that the utility model provides;

Fig. 3a is the schematic diagram of the multi-roller leveler in the strip steel descaling production line shown in Fig. 2;

Fig. 3b is a schematic structural diagram of the multi-roller leveler shown in Fig. 3a;

Fig. 3c is a schematic structural view of the multi-roller leveler shown in Fig. 3a from the front;

Figure 3d is a schematic side view of the structure of the multi-roller leveler shown in Figure 3a;

Fig. 4 is the structural representation of the warping head device in the strip steel descaling production line shown in Fig. 2;

Figure 5a is a front view of the strip cleaning device provided by the utility model;

Figure 5b is a top view of the strip cleaning device shown in Figure 5a;

Fig. 5c is a schematic structural diagram of the brush roller mechanism in the strip cleaning device shown in Fig. 5a;

Fig. 5d is a partial enlarged view of the plate brush in the strip cleaning device shown in Fig. 5b;

Fig. 5e is a partial enlarged view of the plate brush in the strip cleaning device shown in Fig. 5a;

Fig. 6 is the step diagram of the descaling method of the strip steel descaling production line provided by the utility model.

Description of reference numbers:

1A, uncoiler; 2A, steering pinch roller; 3A, straight head straightener; 4A, cutting head shear; 100A, strip advancing direction;

5A, tilting head device; 51A, lower guide plate; 52A, tilting head plate; 53A, upper pressing plate; 531A, turret; 54A, pressing cylinder; 55A, tilting head cylinder;

6A, multi-roller leveling machine;

61A, upper leveling roller group; 611A, upper leveling work roller; 612A, upper support roller group;

62A, lower leveling roller group; 621A, lower leveling work roller; 622A, lower support roller group;

63A, pressing cylinder; 641A, motor; 642A, reducer; 65A, frame;

7A, pre-brushing device; 71A, upper brushing roller; 72A, lower brushing roller;

8A, sand blasting and descaling machine; 9A, strip cleaning device; 10A, drying equipment; 11A, surface inspection instrument;

12A, pinch roller; 13A, flying shears; 14A, conveyor belt; 15A, stacking table;

16A, rectification pinch roller; 17A, slitting machine; 18A, looper guide table; 181A, rectification looper guide table;

19A, oiler; 20A, coiler; 21A, double pinch roller; 22A, steering pinch roller;

100. Box body; 11. Steel strip inlet; 12. Strip steel outlet; 13. Feeding direction;

200, a brush roller mechanism; 201, a first brush roller mechanism; 202, a second brush roller mechanism;

21. Upper brush roller; 211. Upper sand brush; 2111, connecting rod; 212, collecting tank;

22. Lower brush roller; 221. Lower sand brush;

23. Brush roller drive mechanism; 231, Brush roller motor; 24, First cylinder; 25, Lifting mechanism; 251, Screw elevator; 26, Synchronous shaft;

300, the first liquid spray mechanism; 31, the first upper liquid spray pipe; 32, the first lower liquid spray pipe;

400, the second liquid spray mechanism; 41, the second upper liquid spray pipe; 42, the second lower liquid spray pipe;

500, plate brush; 51, bristle group; 52, the second cylinder;

600, squeeze roller mechanism; 61, upper squeeze roller; 62, lower squeeze roller; 63, squeeze drive mechanism; 64, third cylinder;

71, idler; 72, guide plate.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

The cross-cutting unit performs cross-cutting, and the slitting unit performs slitting, both of which are usually performed in the finished product area after cold rolling. The speed of the cross-cutting unit is usually fast, and it mainly operates on thin plates; the slitting unit can work on both thin and thick plates, and the speed of the unit is relatively slow. Usually, slitting and cross-cutting are completed by two independent units. The combination of the cross-cutting unit and the slitting unit will reduce the output of the cross-cutting unit; if only the cross-cutting is considered, it will cause subsequent slitting. Investment increases.

At present, three independent units are used for descaling unit, slitting and cross-cutting, and thick plates are usually cross-cut and stacked or slit and slitted into the next process or directly sold as finished products. For hot-rolled sheets, strips with thicker thickness and higher strength need to be rolled after slitting, and the iron oxide scale must be removed before rolling. The production speed of the sand blasting and descaling unit is relatively matched with the speed of the slitting unit, but it is more difficult to match the production speed of the sand blasting and descaling unit with the speed of the cross-cutting unit.

Considering the above situation, the utility model proposes a strip steel descaling production line and a strip steel descaling method for strip steel with relatively thick thickness and high strength.

Example 1

The utility model provides a strip steel descaling production line, as shown in FIG. 2 , the strip steel descaling production line includes: an uncoiler 1A, a straight-head leveler 3A, a sand blasting and de-scaling machine arranged in sequence along the strip advancing direction 100A Scale machine 8A, strip cleaning device 9A, drying equipment 10A and coiler 20A; between drying equipment 10A and coiler 20A, there are flying shears 13A and slitting machine 17A, flying shears 13A and slitting machine 17A It is arranged forward and backward along the strip advancing direction 100A.

When the strip steel is descaled in the strip steel descaling production line, the strip steel passes through the uncoiler 1A, the straightening machine 3A, the sand blasting and descaling machine 8A, the strip cleaning device 9A and the drying equipment 10A in sequence. The strip steel is subjected to surface descaling treatment in the sand blasting and descaling machine 8A, the strip steel cleaning device 9A and the drying equipment 10A, and is cleaned and dried.

In this strip steel descaling production line, after the strip steel passes through the drying equipment 10A, it can enter the flying shears 13A for cross-cutting, so as to realize cut-to-length cutting or tail cutting, and obtain the strip steel of the required length. The strip can also enter the slitting machine 17A for slitting to obtain a strip with a required width, and the strip after slitting can enter the coiling machine 20A for coiling. The strip can also pass through the flying shear 13A and the slitter 17A and enter the coiler 20A for coiling.

The strip steel descaling production line has the functions of cross-cutting and slitting. Coils, with various products, are conducive to reducing uncoiling and coiling operations, reducing production processes, especially for thick gauge strips, it has a good effect of saving energy and media, and can reduce the floor space and save investment costs and production costs. The strip steel descaling production line has great advantages for steel types such as automobile beam steel, high-quality steel and spring steel that are not ideally treated by conventional pickling.

Further, the arrangement sequence of the slitting machine 17A and the flying shears 13A is optimized: the slitting machine 17A is located between the flying shears 13A and the coiler 20A, that is, the flying shears 13A and the slitting machine 17A are in sequence along the strip advancing direction 100A. Distribution, which can facilitate the coiling of the strip after stripping. When no cross-cutting is required, the strip can pass through the flying shears 13A and move toward the slitting machine 17A. When there is no need for cross-cutting and slitting, the strip can be emptied through the flying shears 13A and the slitter 17A.

As shown in FIG. 2 , after the flying shears 13A, a conveying belt 14A and a stacking table 15A are provided, and the conveying belt 14A is used for conveying the strip steel cross-cut by the flying shears 13A to the stacking table 15A. The flying shears 13A, the conveying belt 14A and the stacking table 15A are distributed in sequence along the advancing direction 100A of the strip steel. Preferably, a pinch roller 12A is provided before the flying shear 13A, and the strip enters the flying shear 13A after passing through the pinch roller 12A.

As shown in FIG. 2 , the slitting machine 17A is provided with a looper guide table 18A, and the slitted strip passes through the closed looper guide table 18A and moves to the coiler 20A for coiling. Preferably, the slitting machine 17A is provided with a deviation-correcting pinch roller 16A, which can correct the deviation of the strip, which is beneficial to the slitting and edge-coiling of thick-gauge strips. Enter the slitting machine 17A for slitting, the strip steel after slitting passes through the closed looper guide table 18A, enters the isolation disc, continues to run, and enters the coiler jaws through the steering pinch roller 22A and the belt guide plate to clamp the tape head , and then the looper guide table 18A is opened to form a small looper, which is convenient for the normal operation of the stripped steel. Further, a rectifying looper guide table 181A is provided in front of the rectifying pinch roller 16A to improve the rectifying effect and help ensure the stability of the strip processing in the slitting machine 17A; specifically, the rectifying looper guide table 181A The structure of the looper guide table 18A may be the same.

In one embodiment of the present invention, an oiler 19A is provided before the coiler 20A so as to apply oil to the strip before coiling. Further, the oiler 19A is provided with double pinch rollers 21A before, and the double pinch rollers 21A provide back tension to the coiler 20A, which is beneficial to ensure the tension coiling effect of the tape tail after leaving the coiler 1A.

In order to ensure the descaling effect on thick-gauge strip steel, in an embodiment of the present utility model, a multi-roller leveler 6A is provided between the sand blasting and descaling machine 8A and the straight-head leveler 3A, as shown in Fig. 3a- As shown in FIG. 3d, the multi-roller leveler 6A includes an upper leveling roller group 61A and a lower leveling roller group 62A arranged up and down, and the process of the strip passing between the upper leveling roller group 61A and the lower leveling roller group 62A The upper leveling roll group 61A includes at least four upper leveling work rolls 611A, and at least four upper leveling work rolls 611A are arranged in sequence along the strip advancing direction 100A; the lower leveling roll group 62A includes at least five There are two lower leveling work rolls 621A, and at least five lower leveling work rolls 621A are arranged in sequence along the strip advancing direction 100A, and are staggered with at least four upper leveling work rolls 611A. As shown in FIG. 3d , the multi-roll leveler 6A includes two AC variable frequency motors 641A connected to the upper leveling roller group 61A and the lower leveling roller group 62A through a reducer 642A respectively, so as to drive the upper leveling work rollers 611A respectively. And the lower leveling work roll 621A rotates.

Especially for thick-gauge strip steel, a multi-roller leveling machine 6A is installed at the entrance of the unit. One is to straighten the shape of the plate; the other is to help mechanical descaling and improve the speed of sand blasting and descaling. And it is beneficial to make the speed of descaling treatment, cross-cutting treatment and slitting treatment more matched in this production line.

On the one hand, the multi-roller leveler 6A can repeatedly bend the strip steel to remove scale and break the scale, and at the same time, it also has the function of correcting and improving the shape of the plate. After the strip passes through the multi-roller leveler 6A, a part of the iron oxide scale has become loose, which is easier to remove later and improves the descaling efficiency. The multi-roller leveler 6A is more suitable for mechanical descaling of thick-gauge steel strip, and has better descaling effect and higher efficiency for thick-gauge steel strip.

Further, two upper support roller groups 612A are provided above each upper leveling work roll 611A, and two lower support roll groups 622A are provided below each lower leveling work roll 621A. Each upper back-up roll set 612A includes a plurality of upper back-up rolls arranged parallel to the upper leveling work rolls 611A. The roll surfaces of the upper leveling work rolls 611A are in rolling fit with the roll surfaces of the upper back-up rolls, and the plurality of upper back-up rolls are along the The lengthwise direction of the upper leveling work rolls 611A is sequentially arranged. Each lower backup roller set 622A includes a plurality of lower backup rollers arranged parallel to the lower leveling work rollers 621A, the roller surfaces of the lower leveling work rollers 621A and the roller surfaces of the lower backup rollers are in rolling fit, and the plurality of lower backup rollers are along the The lengthwise direction of the lower leveling work rolls 621A is sequentially arranged. Through the upper back-up roll set 612A and the lower back-up roll set 622A, it is beneficial to transmit the pressing force to the upper leveling work roll 611A and the lower leveling work roll 621A, so that the force distribution of the upper leveling work roll 611A and the lower leveling work The force distribution of the work roll 621A is more uniform, which is beneficial to ensure the effect of breaking the scale and correcting the shape of the thick steel strip.

As shown in FIG. 3b, the multi-roll leveler 6A includes a frame 65A, and the upper leveling roller set 61A and the lower leveling roller set 62A are both mounted on the frame 65A. Preferably, the multi-roller leveler 6A further includes a roll changing device, which includes a roll changing trolley and an axle connecting bracket. When changing the rolls, the upper leveling roll group 61A and the lower leveling roll are moved by operating the side roll changing trolley. The group 62A is drawn out as a whole, and the transmission side is provided with an axle bracket to hold the universal joint axle.

As shown in Figures 3b and 3c, the upper leveling roller set 61A is connected with a pressing cylinder 63A, and the pressing cylinder 63A is used to drive the upper leveling roller set 61A to move up and down above the lower leveling roller set 62A to adjust the roll gap, To complete the function of mechanical descaling and correction of plate shape. In some embodiments, the upper leveling roller set 61A is connected with four pressing cylinders 63A, and the four pressing cylinders 63A are distributed in a rectangular shape.

In an embodiment of the present invention, a pre-brushing device 7A is provided between the multi-roller leveler 6A and the sand blasting and descaling machine 8A. As shown in FIG. 2 , the pre-brushing device 7A includes at least one upper scrubbing roller 71A at least A lower scrubbing roller 72A through which the strip can pass between the upper scrubbing roller 71A and the lower scrubbing roller 72A. After passing through the multi-roller leveler 6A, the strip enters the pre-brushing device 7A to wash the loose iron oxide scale on the surface, and then enters the sand blasting and descaling machine 8A for descaling. Through the pre-brushing device 7A, the loose iron oxide scale on the surface of the strip steel is brushed off, so that in the sand blasting and descaling machine 8A, the steel grit is directly projected onto the iron oxide scale that is difficult to handle on the strip steel. First, the steel grit and flushing water are saved. , Second, the iron oxide scale brushed off by the pre-brushing device does not enter the sand-water mixing system of the sand blasting and descaling machine 8A, which saves the consumption of the filter screen.

The sand blasting and descaling machine 8A is a sealed structure; the lead of the thick gauge strip is difficult to straighten very well, and the operator cannot see it during the strip threading process, which can easily cause a threading accident, cause equipment damage, and wear the belt. The rods also wear out quickly. To this end, the multi-roller leveler 6A is provided with a head lifter device 5A. As shown in FIG. 4 , the lifter head device 5A includes a lower guide plate 51A, a head lifter plate 52A, an upper pressure plate 53A, a pressing cylinder 54A and a head lifter cylinder 55A , the lower guide plate 51A and the rocker plate 52A are distributed in turn along the strip advancing direction 100A; the pressing cylinder 54A is connected with the upper pressing plate 53A, and can drive the upper pressing plate 53A to move to the lower guide plate 51A, so as to press the strip steel on the lower guide plate 51A. ; The rocker cylinder 55A is connected with the rocker plate 52A, and can drive the rocker plate 52A to move upward, so that the strip steel located on the rocker plate 52A is lifted upwards. In some embodiments, the lifting head device 5A includes a turret 531A, the upper pressing plate 53A is fixed to the turret 531A, the turret 531A is rotatably connected to the base of the lifting head device 5A, and the cylinder of the pressing cylinder 54A is rotatably connected to the base The piston rod of the pressing cylinder 54A is connected to the turret 531A. When the pressing cylinder 54A expands and contracts, it can drive the turret 531A to swing, so as to drive the upper pressing plate 53A to move downwardly to the guide plate 51A.

During the belt threading process, the strip steel moves along the advancing direction 100A of the strip steel, and the lead moves to the rocker plate 52A in the rocker head device 5A, the upper pressing plate 53A presses the strip steel against the lower guide plate 51A, and the rocker plate 52A moves upward, Bend the lead upwards. Lift the lead up to a certain height, through the lead device 5A, the height of the lead can be set to a height suitable for wearing the belt, and different heights of the lead can be set according to different materials and thicknesses, which greatly reduces the wearing accident and reduces the wear and tear. The damage to the equipment caused by the accident also improves the operation rate of the unit. Run to the warping head device 5A for the production of the threading head. After the head is done, the strip steel enters the opened multi-roll leveler 6A. The uncoiler 1A builds up tension and together conveys the strip backwards.

As shown in Fig. 2, there is a cutting head shear 4A between the coiling head device 5A and the straight head straightening machine 3A. After the strip is uncoiled by the uncoiler 1A, it enters the straight head straightening machine 3A, and the straightened strip steel Run to the cutting head shear 4A to cut the out-of-tolerance or damaged tape heads, and transport them to the tape lifting head device 5A for the production of the threading tape heads.

In one embodiment of the present invention, a diverting pinch roller 2A is provided between the uncoiler 1A and the straightening machine 3A. In order to enhance the effect of sand blasting and descaling, the strip steel descaling production line includes two sand blasting and descaling machines 8A continuously arranged along the strip advancing direction 100A.

In an embodiment of the present invention, a surface inspection instrument 11A is provided after the drying equipment 10A, and the surface inspection instrument 11A inspects the surface quality, so that the sand blasting and descaling machine can be inspected according to the detected surface quality of the strip steel. The running state of 8A can be adjusted to improve the descaling effect. The surface inspection instrument 11A includes high-definition cameras arranged on the upper and lower surfaces of the strip, and the high-definition camera can scan the surface of the strip in real time; the existing production line usually uses a grayscale instrument for detecting the brightness of the surface of the strip. The detection of light and shade cannot reflect the specific degree of cleaning of the iron oxide scale, and the gray scale instrument generally only detects the center area of the strip; the surface inspection instrument 11A can check the quality of the strip surface in the full width range, and more comprehensively reflect the surface of the strip. state. The surface inspector 11A can be configured with a defect database. The database stores the surface morphology of the strip after normal cleaning. By comparing the photos with the defects in the database, it can analyze the cleaning state of the strip surface and judge the strip surface state. The surface inspection instrument 11A can perform closed-loop control with the sand blasting and descaling machine 8A, and control the rotational speed of the ejector, the angle of the ejection impeller and the angle of the particle control valve in the sand blasting and descaling machine 8A according to the surface state of the detected strip. opening. In the sand blasting and descaling machine 8A, the flow of sand and water can be controlled by adjusting the rotational speed of the sand blaster, and the proportion of sand and water can be controlled by the particle control valve. The surface inspection instrument 11A detects the state of the full-width plate surface strip to close-loop control the rotational speed and projection angle of the sand blaster of the sand blasting and descaling machine 8A, so as to reasonably adjust the water-sand ratio and reduce unnecessary energy consumption. For example: if the detected surface topography shows excessive sand blasting, then a signal is sent to the sand blaster to reduce the speed to reduce the consumption of steel sand and electric energy, or increase the speed of the unit to increase the output, so as to achieve the purpose of reducing the consumption of steel per ton.

Embodiment 2

The inventor has studied the strip steel that is descaled by spraying steel grit, and the inventor found that when descaling, after the steel grit peels off the iron oxide scale of the strip steel, some tiny particles of steel grit are embedded on the surface of the strip steel. The high pressure water pressure is very large, which can remove most of the surface steel grit and dirt, but when descaling, the spray force when using steel grit to remove oxides on the surface of the strip steel is very large, and some tiny particles are embedded in the surface of the strip steel, and the water flow rinses Difficult to clean out the particles.

To this end, the utility model provides a strip steel cleaning device, as shown in Figure 5a and Figure 5b, the strip steel cleaning device includes: a box 100, which is provided with a strip steel feed port 11 and a strip steel discharge port 12. The feeding direction 13 of the strip entering the box body 100 is along the strip steel feeding port 11 to the strip steel discharging port 12; at least one set of brush roller mechanisms 200 are arranged in the box body 100, and the brush roller mechanism 200 includes a brush roller. The roller driving mechanism 23, the oppositely arranged upper brush roller 21 and the lower brush roller 22, the strip steel can pass between the upper brush roller 21 and the lower brush roller 22, and the brush roller driving mechanism 23 is used to drive the upper brush roller 21 and the lower brush roller. The roller 22 rotates.

After the descaling step is completed, the strip enters the box 100 from the strip feed port 11 , and passes between the upper brush roll 21 and the lower brush roll 22 . The upper brush roller 21 and the lower brush roller 22 are rotated under the drive of the brush roller drive mechanism 23, and the moving direction of the contact portion between the upper brush roller 21 and the strip steel is kept opposite to the moving direction of the strip steel; The moving direction of the contact part of the strip is opposite to the moving direction of the strip. The bristles of the upper brush roller 21 and the bristles of the lower brush roller 22 can have a strong cleaning effect on the strip, and can be embedded in the surface of the strip respectively. The impurity particles such as steel grit are cleaned out, the cleaning effect is improved, and the technical problem that the strip steel after the descaling step in the prior art is prone to be uncleanly cleaned.

Both ends of the upper brush roller 21 and both ends of the lower brush roller 22 are respectively mounted on the bearing housings. The brush roll driving mechanism 23 includes a brush roll motor 231 drivingly connected with the upper brush roll 21 and a brush roll motor 231 drivingly connected with the lower brush roll 22 . Preferably, the brush roller motor 231 adopts a frequency conversion motor, so that the rotational speed of the upper brush roller 21 and the rotational speed of the lower brush roller 22 can be adjusted according to the speed of the production line. Preferably, the bristles of the upper brush roller 21 and the lower brush roller 22 are made of nylon.

In an embodiment of the present invention, the strip cleaning device includes at least one set of first liquid spraying mechanisms 300 disposed in the box body 100 . The first upper liquid spraying pipe 31 and the first lower liquid spraying pipe 32 for spraying liquid to the bristles of the lower brush roller 22 . The first upper liquid spraying pipe 31 is located above the strip steel, the first lower liquid spraying pipe 32 is located below the strip steel, the first upper liquid spraying pipe 31 and the first lower liquid spraying pipe 32 are respectively along the axial direction of the upper brush roller 21 extension, and a plurality of spray ports distributed at intervals are arranged on the pipe wall. The liquid sprayed by the first liquid spraying mechanism 300 can, on the one hand, clean off the cleaned impurity particles and dirt, and on the other hand, can also take away the heat on the bristles in the brush roller mechanism 200, which has a cooling effect and prolongs the upper The service life of the brush roll 21 and the lower brush roll 22. Preferably, the liquid sprayed from the first upper liquid spray pipe 31 is sprayed to the position of the upper brush roll 21 in contact with the strip steel, and the liquid sprayed from the first lower liquid spray pipe 32 is sprayed to the lower brush roll 22 in contact with the strip steel. contact location.

Further, at least one group of brush roller mechanisms 200 includes a first brush roller mechanism 201 and a second brush roller mechanism 202 distributed in sequence along the feeding direction 13 ; at least one group of first liquid spray mechanisms 300 includes a first brush roller mechanism 201 The first liquid spraying mechanism 300 for spraying liquid and the first liquid spraying mechanism 300 for spraying liquid to the second brush roller mechanism 202 are used to enhance the cleaning effect of strip steel.

As shown in FIG. 5 a , a first brush roll mechanism 201 , a first liquid spray mechanism 300 for spraying liquid to the first brush roll mechanism 201 , a second brush roll mechanism 202 , and a first spray mechanism for spraying liquid to the second brush roll mechanism 202 The liquid mechanism 300 is sequentially distributed along the feeding direction 13 . The first liquid spraying mechanisms 300 respectively spray liquids toward the brush roller mechanism 200 in the reverse direction of the feeding direction 13 . Specifically, the first upper liquid spraying pipe 31 sprays the liquid in a reversely inclined direction along the feeding direction 13 from top to bottom, and the first lower liquid spraying pipe 32 is inclined reversely along the feeding direction 13 from bottom to top. direction to spray liquid. By arranging the first upper liquid spraying pipe 31 and the first lower liquid spraying pipe 32 in the above manner, the spray flow can better clean the impurities on the surface of the strip steel and reduce the temperature of the brush roll.

In an embodiment of the present invention, the strip cleaning device includes at least one group of second liquid spraying mechanisms 400 disposed in the box body 100 , and the second liquid spraying mechanisms 400 are used to spray liquid toward the strip to spray the strip. surface to be rinsed. Specifically, the second liquid spraying mechanism 400 includes a second upper liquid spraying pipe 41 and a second lower liquid spraying pipe 42 . The second upper liquid spraying pipe 41 is located above the strip steel, the second lower liquid spraying pipe 42 is located below the strip steel, the second upper liquid spraying pipe 41 and the second lower liquid spraying pipe 42 are respectively along the axial direction of the upper brush roller 21 extension, and a plurality of spray ports distributed at intervals are arranged on the pipe wall. Further, the liquid spraying direction of the second upper liquid spraying pipe 41 and the liquid spraying direction of the second lower liquid spraying pipe 42 are both perpendicular to the feeding direction 13, so as to enhance the washing effect of the strip steel.

In order to facilitate the control of the separation and approach between the upper brush roller 21 and the lower brush roller 22 , the bearing seats at both ends of the upper brush roller 21 are slidably connected to the box body 100 , so that the upper brush roller 21 can move up and down relative to the box body 100 . Sliding; the brush roller mechanism 200 includes a first air cylinder 24 connected with the upper brush roller 21 , and the first air cylinder 24 is used to drive the upper brush roller 21 to move in the up-down direction. Specifically, the piston rod of the first air cylinder 24 is connected with the bearing seat of the upper brush roller 21 .

Further, the brush roller mechanism 200 includes a lifting mechanism 25 connected with the upper brush roller 21. The lifting mechanism 25 is used to adjust the distance between the upper brush roller 21 and the lower brush roller 22, so as to realize the fine adjustment of the position of the upper brush roller 21, which is convenient for After the bristles of the upper brush roller 21 or the bristles of the lower brush roller 22 are worn, the upper brush roller 21 can be driven to move down with high precision to ensure the stability of the cleaning strength of the upper brush roller 21 and the lower brush roller 22 to the strip steel , improve the cleaning effect, prolong the use time of the upper brush roller 21 and the lower brush roller 22, and reduce the replacement frequency. Preferably, the lifting mechanism 25 adopts a screw lifter 251 , and the screw lifter 251 is connected with the cylinder block of the first air cylinder 24 to drive the first air cylinder 24 and the upper brush roller 21 to move together.

More preferably, the bearing seats at both ends of the upper brush roller 21 are respectively connected with a first cylinder 24, and each first cylinder 24 is connected with a screw elevator 251; The screw elevator 251 at one end is equipped with a motor to drive the lifting and lowering, and the screw elevator 251 at the other end is equipped with an encoder to calculate the displacement amount of the lifting and lowering, so as to ensure the accuracy of the pressing amount.

When the strip cleaning device is running, the strip moves forward along the feeding direction 13, and the lower surface of the upper brush roller 21 moves in the reverse direction along the feeding direction 13, which will brush the impurities on the surface of the strip away from the strip. Part of the impurities will be attached to the bristles; in order to reduce the impurities attached to the upper brush roller 21, the upper brush roller 21 rotates and moves to the strip again. The inventor has improved the strip cleaning device: as shown in Figure 5a and Figure 5 As shown in 5c, the brush roller mechanism 200 includes an upper sand brush bar 211. The upper sand brush bar 211 is in contact with the outer circumferential surface of the upper brush roller 21. When the upper brush roller 21 rotates, the bristles will collide with the upper sand brush bar 211. It is beneficial to remove the impurities attached to the bristles from the bristles. Preferably, the upper sand brushing rod 211 extends along the axial direction of the upper brush roller 21 , and the two ends thereof are respectively fixed to the bearing seat of the upper brush roller 21 through the connecting rods 2111 .

The upper sand brush 211 can be installed at any position in the circumferential direction of the upper brush roller 21. The upper brush roller 21 and the upper sand brush bar 211 move relative to each other. When the bristles collide with the upper sand brush bar 211, impurities can be detached under the action of centrifugal force. bristles. However, the inventor found that: after the impurities are separated from the bristles, they will continue to move under the action of inertia and gravity, and some of the impurities will fall on the surface of the strip steel again. To this end, the inventors set the upper sand brush 211 on the side of the upper brush roll 21 close to the strip steel feed port 11 and above the axis of the upper brush roll 21; and the brush roll mechanism 200 includes a collection groove 212 , the collection tank 212 is arranged above the upper sand brushing rod 211 , after the impurities are separated from the bristles, they will continue to move upward and fall into the collection tank 212 .

The reverse movement of the upper surface of the lower brush roller 22 along the feeding direction 13 will brush the impurities on the lower surface of the strip away from the strip, and some impurities will adhere to the bristles; in order to reduce the impurities attached to the lower brush roller 22, As the lower brush roller 22 rotates and moves to the strip again, the inventor has made improvements to the strip cleaning device: as shown in Figures 5a and 5c, the brush roller mechanism 200 includes a lower sand brushing rod 221 and a lower sand brushing rod 221. In contact with the outer circumferential surface of the lower brush roller 22, when the lower brush roller 22 rotates, the bristles will collide with the lower sand brushing bar 221, which is beneficial for the impurities attached to the bristles to be separated from the bristles under centrifugal action. Preferably, the lower sand brushing rod 221 extends along the axial direction of the lower brush roller 22 , and the two ends thereof are respectively fixed to the bearing seat of the lower brush roller 22 through connecting rods.

The lower sand brushing bar 221 can be installed at any position in the circumferential direction of the lower brush roller 22. Preferably, the inventors set the lower sand brushing bar 221 on the side of the lower brush roller 22 that is close to the strip steel feed port 11, and is located at the bottom of the lower brush roller 22. Below the axis of the brush roller 22 , after the bristles collide with the lower sand brushing bar 221 , the impurities are separated from the bristles and fall to the bottom of the box body 100 .

In an embodiment of the present invention, the strip cleaning device includes a plate brush 500 for contacting the upper surface of the strip, and the plate brush 500 is arranged on the side of the second liquid spray mechanism 400 close to the strip discharge port 12; The plate brush 500 is provided with at least one set of bristle groups 51 for contacting the upper surface of the strip steel. Along the width direction of the upper surface of the strip steel, the bristles in the bristle set 51 follow a path inclined from the center to the outside along the feeding direction. Arrange. As shown in Figures 5b and 5d, the width direction of the upper surface of the strip is parallel to the axis direction of the upper brush roll 21; the strip moves along the feeding direction 13, and the bristles in the bristle group 51 are in contact with the upper surface of the strip, The liquid such as water on the upper surface of the strip moves forward with the strip, and can move to the outside under the guidance of the bristle group 51, thereby brushing the liquid away from the strip. Preferably, the bristles in the bristles group 51 are continuously arranged along the arrangement path thereof, and the bristles are natural bristle bristles.

Further, as shown in FIG. 5d , the bristles in the bristle group 51 are arranged in a path inclined along the feeding direction 13 from the center to both sides respectively, and the arrangement path of the bristles in the bristle group 51 is along the feeding direction 13 . Reverse convex bent shape to help guide the liquid on the surface of the strip to sweep to both sides. Preferably, the plate brush 500 is provided with a plurality of bristle groups 51 spaced apart along the feeding direction 13, so as to reduce the residual liquid on the surface of the strip steel.

Further, as shown in Fig. 5a and Fig. 5e, the strip cleaning device includes a second air cylinder 52 connected with the plate brush 500, the second air cylinder 52 is used to drive the plate brush 500 to move up and down, so that the plate brush 500 is close to or away from the strip.

In an embodiment of the present invention, the strip cleaning device includes a squeeze roller mechanism 600 , and the squeeze roller mechanism 600 includes an upper squeeze roller 61 , a lower squeeze roller 62 and a squeeze drive connected to the lower squeeze roller 62 . Mechanism 63, the upper squeezing roller 61 and the lower squeezing roller 62 are oppositely arranged, and the strip can pass between the upper squeezing roller 61 and the lower squeezing roller 62 along the feeding direction 13; the squeezing drive mechanism 63 is used to drive the lower The squeeze roll 62 rotates. When the device is running, the upper squeezing roller 61 is in contact with the upper surface of the strip; the lower squeezing roller 62 is in contact with the lower surface of the strip, and the lower squeezing roller 62 is driven by the squeezing drive mechanism 63. The moving direction of the contact surface of the squeeze roller 62 with the strip steel is kept in the same direction as the moving direction of the strip steel. The upper squeezing roller 61 cooperates with the lower squeezing roller 62 to squeeze away the liquid on the surface of the strip, so that the water on the surface of the strip is greatly reduced, the burden of subsequent drying steps is reduced, and the occurrence of surface defects on the strip can be effectively suppressed. Preferably, the squeezing drive mechanism 63 includes a variable frequency gear motor and an encoder, so as to control the rotation speed of the lower squeezing roller 62 to match the moving speed of the strip.

Further, the upper squeezing roller 61 is connected with a third air cylinder 64, and the third air cylinder 64 is used to drive the upper squeezing roller 61 to move up and down, so as to control the separation and approach of the upper squeezing roller 61 and the lower squeezing roller 62, and Apply pressure to the strip. Preferably, the strip cleaning device includes two squeeze roller mechanisms 600 distributed along the feeding direction 13 .

In order to ensure the cleaning effect of the strip cleaning device, as shown in FIG. 5a, the first brush roller mechanism 201, the first liquid spray mechanism 300 spraying liquid to the first brush roller mechanism 201, the second brush roller mechanism 202, the The first liquid spraying mechanism 300 , the second liquid spraying mechanism 400 , the plate brush 500 and the squeezing roller mechanism 600 sprayed by the second brush roller mechanism 202 are distributed in sequence along the feeding direction 13 .

In an embodiment of the present invention, as shown in FIG. 5 a , a plurality of idler rollers 71 and a plurality of guide plates 72 are provided in the box body 100 for supporting the strip steel, and the plurality of idler rollers 71 are distributed along the feeding direction 13 at intervals , a plurality of guide plates 72 are distributed along the feeding direction 13 at intervals to ensure the smooth passing of the strip, make the strip move more smoothly, and further improve the effect of cleaning steel sand particles and plate brushes to remove water.

Embodiment 3

The strip steel descaling production line provided by the present utility model can be operated according to the steps shown in FIG. 6, including: step S10, uncoiling; step S20, descaling treatment; step S30, cleaning and drying treatment; step S40, through the flying shear 13A Carry out cross-cutting processing; step S50, carry out slitting processing by the slitting machine 17A, and coil; step S60, coiling; step S40, step S50 and step S60 alternatively implemented.

The strip descaling production line has the functions of cross-cutting and longitudinal slitting. During actual operation, according to the size of the strip and the needs of downstream users, one of steps S40, S50 and S60 can be selected to be implemented, and the surface can be descaled. The strip is made into the required width or length, and steel coils, cut-to-length steel plates or slit steel coils are produced according to user needs. The products are diverse, which is conducive to reducing uncoiling and coiling operations and production processes, especially for thick specifications. Strip steel has a good effect of saving energy and medium, and can reduce the floor space and save investment costs and production costs.

The above are only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims (12)

1. The utility model provides a strip steel descaling production line which characterized in that includes: the uncoiler, the straight head straightener, the sand-throwing descaler, the strip steel cleaning device, the drying equipment and the coiler are sequentially arranged along the advancing direction of the strip steel;

flying shears and a slitting machine are arranged between the drying equipment and the coiling machine, and the flying shears and the slitting machine are arranged in the front and back direction of the strip steel advancing direction.

2. The strip steel descaling production line of claim 1, wherein the slitter is located between the flying shear and the coiler.

3. The strip steel descaling production line of claim 1 or 2, wherein the flying shears are followed by a conveying belt and a stacking platform, and the conveying belt is used for conveying the strip steel transversely cut by the flying shears to the stacking platform.

4. The strip steel descaling production line of claim 1 or 2, wherein a loop guide table is arranged behind the slitting machine.

5. Strip descaling line according to claim 1 or 2, wherein the coiler is preceded by an oiler.

6. The strip steel descaling line of claim 5, wherein the oiling machine is preceded by a double pinch roll.

7. The strip steel descaling production line of claim 1, wherein a multi-roll leveler is arranged between the sand-throwing descaler and the straight-head leveler, the multi-roll leveler comprises an upper leveling roll group and a lower leveling roll group which are arranged up and down, and the strip steel is repeatedly bent in the process of passing between the upper leveling roll group and the lower leveling roll group;

the upper leveling roller group comprises at least four upper leveling working rollers which are sequentially arranged along the advancing direction of the strip steel;

the lower leveling roller group comprises at least five lower leveling working rollers, the at least five lower leveling working rollers are sequentially arranged along the advancing direction of the strip steel and are staggered with the at least four upper leveling working rollers.

8. The strip steel descaling production line of claim 7, wherein two upper supporting roller sets are arranged above each upper leveling work roller, and two lower supporting roller sets are arranged below each lower leveling work roller.

9. The strip steel descaling production line of claim 7, wherein the upper leveling roller group is connected with a pressing cylinder, and the pressing cylinder is used for driving the upper leveling roller group to move up and down above the lower leveling roller group.

10. The strip steel descaling production line of claim 7, wherein a pre-brushing device is arranged between the multi-roll leveler and the sand-throwing descaler, the pre-brushing device comprises at least one upper brushing roll and at least one lower brushing roll, and the strip steel can pass through the space between the upper brushing roll and the lower brushing roll.

11. The strip steel descaling production line according to claim 7, wherein a warping head device is arranged in front of the multi-roll leveler and comprises a lower guide plate, a warping head plate, an upper pressing plate, a pressing cylinder and a warping head cylinder, and the lower guide plate and the warping head plate are sequentially distributed along the strip steel advancing direction;

the pressing cylinder is connected with the upper pressing plate and can drive the upper pressing plate to move towards the lower guide plate so as to press the strip steel on the lower guide plate;

the warping head cylinder is connected with the warping head plate and can drive the warping head plate to move upwards, so that strip steel on the warping head plate is lifted upwards.

12. The strip steel descaling production line of claim 11, wherein a crop shear is arranged between the strip tilting head device and the straight head straightener.

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