Seal in rolling plant for rolling metal material, scale washer of rolling plant, and rolling mill

Abstract

The utility model relates to a sealing part in rolling equipment for rolling metal materials, an oxide skin cleaner of the rolling equipment and a rolling mill. The sealing part (1) is used for sealing a first area (3) for applying water to the metal materials (2) relative to an adjacent second area (4). In order to improve the sealing part so that improved sealing can be achieved in the direction opposite to the conveying direction of the metal materials, according to the utility model, the sealing part (1) comprises a hanging piece (5) which extends horizontally and transversely to the conveying direction (F) of the metal materials (2); a shaft (6) having an axial direction (a), which is connected to the suspension (5) by means of a connecting piece (10) at at least two connecting points (7, 8, 9) spaced apart in a direction transverse to the conveying direction (F); and a plurality of strip-shaped sealing sheets (11, 12), which are arranged one by one and can be rotated on the shaft (6) about the axial direction (a).

Description

Technical Field

[0001] The utility model relates to a sealing part in a rolling equipment for rolling metal materials, by which a first area is sealed relative to an adjacent second area, wherein water is applied to the metal material in the first area. In addition, the utility model relates to an oxide scale cleaner of the rolling equipment, which has such a sealing part. The utility model also relates to a rolling mill. Background Art

[0002] Such a seal is known, for example, from EP 3 471 902 B1, in which the sealing between two areas of a rolling train is achieved by means of a plurality of plate-shaped seals each suspended on a chain, wherein the seals are suspended in an overlapping manner transversely to the conveying direction of the metal material.

[0003] Patent document US Pat. No. 5,461,763 A discloses another solution, in which the rows of seals are each formed by a metal curtain designed in the form of a fabric.

[0004] The seal in the form of a chain curtain only sags downwards due to its own weight. Therefore, sufficient overlap of the chain links to achieve a good sealing effect cannot be ensured. In this way, for example, the chain can be pushed apart by strong jets, which means that the sealing effect is lost. In addition, it can happen that the strip or the strip edge drags the chain links away. Finally, it is also possible for the chain links to become loose due to wear and be dragged away by the strip, which can lead to disruptions in the rolling process.

[0005] As already mentioned, if a plate-shaped sealing part is used which is suspended from a chain, a lateral tilting of the sealing part can occur when a strong jet is applied, which in turn has a negative effect on the sealing effect. Due to the type of suspension of the sealing plate and its relatively large width, wear of the sealing plate has a negative effect on the tightness. Due to wear, gaps can occur in the originally straight lower sealing edge of the sealing plate, which in turn has a negative effect on the seal. In addition, the loose suspension also gives the sealing plate a relatively large degree of freedom, which has a negative effect on the tightness. In particular, a rotation of the sealing plate about a vertical axis can occur.

[0006] In previously known solutions, the sheets therefore have a relatively large mobility, whereby gaps can form which have a negative impact on the tightness of the assembly. Utility Model Content

[0007] The purpose of the utility model is to improve the seal of the type mentioned at the beginning so that an improved seal can be achieved in the opposite direction of the conveying direction of the metal material. Therefore, it should be able to effectively block the seepage water and high-energy splash water. In addition, the seal should be as wear-resistant as possible.

[0008] The solution of the utility model to achieve this purpose is characterized in that the sealing part includes: a suspension member, which extends horizontally and transversely to the conveying direction of the metal material; an axis with an axial direction, which is connected to the suspension member at at least two connecting positions spaced apart in a direction transverse to the conveying direction by means of a connecting member; and a plurality of strip-shaped sealing plates, which are arranged one by one and can rotate on the axis around the axial direction.

[0009] In this case, the suspension element is arranged in particular above the metal material.

[0010] The suspension element can have a contact area for the shaft at the connection area. Thus, when no external force acts on the sealing disc, a defined, optimal sealing position can be given to the sealing disc.

[0011] The connecting element is preferably designed as a chain; alternatively, the connecting element can also be one or more links (Lasche, in particular linear) or rods. In the case of a chain, it preferably has two, three or four chain links; the length of the individual chain links is selected in this case so that the functions explained in more detail below can be optimally realized. The length or flexibility of the connecting element is selected in this case so that the freedom of movement is ensured, but at the same time a jamming of the shaft with its sealing disc is avoided.

[0012] A preferred embodiment provides that the sealing discs are arranged on the shaft in two groups, wherein one group is arranged in front of the other group in the conveying direction of the metal material. In this case, the two groups of sealing discs are preferably arranged staggered on the shaft in the axial direction of the shaft. By means of the staggered arrangement, the sealing system and the respective position of the sealing discs can be adapted particularly effectively to the geometry of the metal material.

[0013] The sealing disk can have an annular section at one of its axial ends, which surrounds the shaft, wherein the annular section produces a rotatable mounting of the sealing disk on the shaft.

[0014] A transverse blowing and / or transverse spraying can also be provided at or for the seal, which is arranged in the adjacent second region, in order to remove water which, if necessary, leaves the first region in which the water is applied to the metal material into the adjacent second region.

[0015] The utility model also relates to an oxide scale cleaner for a rolling equipment, which comprises at least one sealing part of the above type. Here, the oxide scale cleaner is preferably used in a hot rolling mill, in particular in a flat-rolling hot rolling mill.

[0016] The proposed solution is therefore based on a suspension of the sealing disc that can be pivoted about a (single) axis. The axis that forms the pivot axis for the sealing disc is itself movable, for example by means of the mentioned chain suspended from a crossbeam, in order to enable the strip or slab to be withdrawn. By superimposing the mobility of the sealing discs relative to one another and the mobility of the sealing discs about the axis in combination with a flexible connection, an optimal sealing result can be achieved. Possible wear of one or more sealing discs can be compensated by the interaction and superimposed mobility.

[0017] If a strong jet of water impinges on the sealing disc, it is held rigidly due to its suspension according to the invention and cannot give way to the jet of water; it can only pivot about the mentioned axis.

[0018] The preferred two-row arrangement of the sealing sheets always ensures optimal covering of the gaps between the (sealing) sheets, even in the event of wear on the sealing sheets.

[0019] Furthermore, a space-saving structure is achieved.

[0020] Due to the suspension and the relatively narrow design of the (sealing) plates (in a direction transverse to the conveying direction of the metal material), metal materials to be processed of different widths can be well sealed transversely.

[0021] Water droplets or accumulated water that still pass through the (sealing) sheet curtain can be removed from the surface of the metal material by spraying or blowing. In this way, the water can be efficiently intercepted and directed in a targeted manner into the grooves for scale (ie, the drainage section).

[0022] The shaft together with the sealing disc is arranged in such a way that when the metal material is warped (arched upwards), the (sealing) disc forms a type of funnel, which guides the strip head in a targeted manner into the scale cleaner.

[0023] The proposed solution ensures sealing in the direction opposite to the strip running direction, in particular in scale cleaners, thereby protecting upstream machines or components from wear, thereby making it possible to use corresponding machines or components only in certain circumstances.

[0024] The proposed solution is used in particular in scale cleaners or other devices for treating metal materials by means of high-pressure water. In this case, hot rolling mills are considered in particular, and flat-rolling hot rolling mills are particularly considered. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The embodiments of the present utility model are shown in the accompanying drawings.

[0026] Figure 1A view transversely to the conveying direction of the metal strip or slab shows a section of a rolling mill, wherein a first region of a scale cleaner is separated from an adjacent second region by a seal according to the invention;

[0027] Figure 2a The sealing portion is shown as viewed from the conveying direction of the metal strip;

[0028] Figure 2b The seal portion is shown from a top view;

[0029] Figure 2c Shown from the Figure 2b The sealing part seen from the cross section BB;

[0030] Figure 2d Shown in Figure 2b The sealing portion is viewed in a side view;

[0031] Figure 2e shows a perspective view of the sealing portion;

[0032] Figure 3 Similar to Figure 1 The view of FIG. 1 shows the seal in a position deflected due to warping of the metal material;

[0033] Figure 4 The sealing portion is shown as seen in the conveying direction of the metal strip, wherein the transverse injection portion arranged in the second region is shown; and

[0034] Figure 5 The seal is shown from a plan view, wherein the transverse injection molding arranged in the second region is shown. DETAILED DESCRIPTION

[0035] exist Figure 1 , a part of a rolling mill is shown in which a metal material in the form of a strip or slab 2 is rolled. A first region 3 can be seen, in which a scale remover can be arranged, with which the metal material is descaled by applying high-pressure water. Adjacent to the first region 3 is a second region 4, which is to be kept free of water, in particular water is to be moved from the first region 3 against the conveying direction F of the material 2. For waterproof sealing in this respect, a seal 1 is provided which separates the two regions 3, 4 from each other, or more precisely seals them from each other. Figure 1 A view is shown looking in direction Q, ie horizontally and transversely to the conveying direction F. Figure 1 Also shown are guide blades 21 which collect the water running off laterally and direct it into the grooves for scaling.

[0036] exist Figure 2a to Figure 2e How the seal 1 is designed and constructed can best be seen in FIG.

[0037] Accordingly, the seal 1 first includes a suspension part 5, which is currently configured as a rod, a tube or a shaft (Welle, which can transmit rotational movement and torque) and is located above the material 2. The suspension part 5 extends here with its longitudinal axis in the direction Q. In addition, the seal 1 includes a shaft (Achse, which supports the rotating or oscillating adjacent components) 6, which has an axial direction a extending parallel to the direction Q. Here, in this embodiment, the shaft 6 is connected to the suspension part 5 at three connection locations 7, 8, and 9 via a connecting member 10. The connecting member 10 is configured as a short chain, which has three links in this embodiment. Therefore, although the shaft 6 can move (slightly) relative to the suspension part 5, its axial direction a is maintained essentially parallel to the direction Q. In order to enable the shaft 6 to occupy a defined position on the suspension part 5, as long as the shaft together with the sealing plate arranged thereon is not subject to external forces, a contact area 13 is provided for the shaft 6 on the suspension part 5, such as Figure 2d (and Figure 3 ) as shown.

[0038] Two groups of sealing plates are arranged on the shaft 6, namely a first group of sealing plates 11 and a second group of sealing plates 12. The sealing plates 11 and 12 have an annular section 14 at their axial upper ends, which forms an inner hole, and each sealing plate 11 and 12 is arranged on the shaft 6 (such as Figure 2c best shown).

[0039] As can be seen from the sub-figures in FIG. 2 , the two groups of sealing discs are arranged staggered, ie alternately, in the axial direction a on the shaft 6. The annular sections 14 of all (sealing) discs 11, 12 are designed in the same way and thus (as in FIG. Figure 2c As can be best seen in FIG. 1 , the strip-shaped sections of the two groups of (sealing) sheets 11 , 12 are placed one next to the other on the shaft 6 , while the strip-shaped sections of the two groups of (sealing) sheets 11 , 12 are arranged in different ways on the annular section 14 so that they occupy different positions in the conveying direction F. Figure 2d As can be best seen, the sealing sheet 11 is located slightly behind the sealing sheet 12, as seen in the conveying direction F. The distance between the two sealing sheets in the conveying direction is Figure 2b The distance is preferably between 0.5 cm and 5 cm.

[0040] The sealing sheets 11 , 12 arranged on the shaft 6 are therefore “curtains” of largely complementary design that prevent the transfer of water from the first area into the second area.

[0041] However, it is preferred to provide (and for this purpose in particular reference may be made to Figure 2a ), the width of the preferably rectangular sealing sheets 11, 12 in the direction Q is selected such that there is an overlap of the sealing sheets when viewed in the conveying direction F. In this regard, reference is made to Figure 2aFor the overlap c, values ​​between 0.5 cm and 5 cm have proven to be feasible. It is also possible to choose to cover up to half the width of the sealing sheet.

[0042] By arranging the sealing disks 11 , 12 on the shaft 6 , the annular sections 14 of the sealing disks 11 , 12 produce a pivot bearing function, so that the sealing disks 11 , 12 can pivot on the shaft 6 but otherwise have no movement relative to the shaft.

[0043] Figure 2c It is also shown how the seal 1 can be designed structurally. Hereby, the sealing discs 11, 12 are mounted on the shaft 6 in an alternating manner; in the two axial end regions of the shaft 6, terminal elements 19, 20 are fixed by means of threaded connections, which provide axial fixation for the sealing discs 11, 12 and also allow connection to the suspension 5 by means of a chain.

[0044] Figure 3 The extent to which the sealing blades 11, 12 can be deflected when necessary is shown, for example when a warping (ie upward curvature) of the material 2 causes this to happen. Figure 3 As can be seen in the figure, the sealing sheets 11, 12 can be designed to be at a maximum of about 60° from the vertical position. At this time, a distance of, for example, 200 to 350 mm can be retained between the lower edges of the (sealing) sheets 11, 12 relative to the material 2, so that the material 2 can pass even when it is warped.

[0045] exist Figure 4 and Figure 5 , it is shown that in the aforementioned adjacent second region 4, i.e. in the conveying direction F before the sealing section 1, a (air) transverse blowing section and / or a (water) transverse spraying section 15 can be provided in order to remove water that has penetrated the sealing sheet if necessary. For this purpose, a drainage section 16 is marked, into which the water can be blown or sprayed. Figure 5 As shown, a cover 17 on the drive side and a cover 18 on the operating side facilitate the drainage of water.

[0046] List of reference numerals:

[0047] 1. Sealing part

[0048] 2 Metal materials (strips / slabs)

[0049] 3. First Area

[0050] 4 Adjacent second area

[0051] 5 Suspension parts

[0052] 6 Axis

[0053] 7 Connection parts

[0054] 8 Connection parts

[0055] 9 Connection parts

[0056] 10 Connector (chain)

[0057] 11 Sealing sheet (first group)

[0058] 12 Sealing sheet (second set)

[0059] 13 For the shaft contact area

[0060] 14 Annular section of sealing disc

[0061] 15 Horizontal purge section / horizontal injection section

[0062] 16 Drainage

[0063] 17 Drive side cover

[0064] 18 Operating side cover

[0065] 19 Terminal components

[0066] 20 Terminal components

[0067] 21 Guide plate

[0068] F Conveying direction of metal materials

[0069] Q is horizontal and transverse to the conveying direction

[0070] a Axis direction

[0071] b Distance between sealing sheets

[0072] c Overlap.

Claims

1. A seal (1) in a rolling mill for rolling metal material (2), with which a first region (3) is sealed relative to an adjacent second region (4), wherein: In the first zone, water is applied to the metal material (2), It is characterized by: The sealing portion (1) comprises: a suspension member (5) extending horizontally and transversely to a conveying direction (F) of the metal material (2); a shaft (6) having an axial direction (a), said shaft being connected to said suspension element (5) by means of a connection element (10) at at least two connection locations (7, 8, 9) spaced apart in a direction transverse to said conveying direction (F); and A plurality of strip-shaped sealing sheets (11, 12) are arranged one next to the other and are rotatable on the shaft (6) around the axial direction (a).

2. The sealing portion according to claim 1, characterized in that: The suspension member (5) is arranged above the metal material (2).

3. The sealing portion according to claim 1, characterized in that: The suspension element (5) has a contact area (13) for the shaft (6) at the connection area (7, 8, 9).

4. The sealing portion according to claim 2, characterized in that: The suspension element (5) has a contact area (13) for the shaft (6) at the connection area (7, 8, 9).

5. The sealing portion according to claim 1, characterized in that: The connecting element (10) is designed as a chain, a link or a rod.

6. The sealing portion according to claim 5, characterized in that: The chain has two, three or four chain links.

7. The sealing portion according to any one of claims 1 to 6, characterized in that: The sealing sheets (11, 12) are arranged in two groups on the shaft (6), wherein one group is arranged in front of the other group along the conveying direction (F) of the metal material (2).

8. The sealing portion according to claim 7, characterized in that: The two groups of sealing sheets (11, 12) are arranged on the shaft (6) in a staggered manner along the axial direction (a) of the shaft (6).

9. The sealing portion according to any one of claims 1 to 6, characterized in that: The sealing disc (11, 12) has an annular section (14) at one axial end thereof, the annular section (14) surrounding the shaft (6), wherein the sealing disc (11, 12) is rotatably mounted on the shaft (6) by the annular section (14).

10. The sealing portion according to any one of claims 1 to 6, characterized in that: The seal also has a transverse blowing and / or transverse spraying (15) arranged in the adjacent second region (4) in order to be able to remove water, if necessary, which leaves the first region (3) and enters the adjacent second region (4), wherein the water is applied to the metal material (2) in the first region.

11. Oxide scale cleaning device for rolling equipment, characterized in that: The scale cleaner comprises at least one seal (1) according to any one of claims 1 to 10.

12. A rolling mill, characterized in that It has a scale remover according to claim 11 .

13. The rolling mill according to claim 12, characterized in that The rolling mill is a hot rolling mill.

14. The rolling mill according to claim 13, characterized in that The rolling mill is a flat-rolling hot rolling mill.

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