Back-up roll, double roll type equipment and scale breaker

Abstract

The utility model relates to a back-up roll which comprises a plurality of back-up roll segments, each back-up roll segment comprises a segment roll shaft and a segment roll body sleeved on the segment roll shaft, and the segment roll shafts are sequentially and coaxially connected in series to form a back-up roll shaft. At least part of the supporting roller sections are blowing rollers, at least one end of each section roller body of each blowing roller is provided with an air blowing mechanism, a compressed air supply channel is arranged on each supporting roller shaft, one end of each supporting roller shaft is connected with a compressed air source, and the compressed air supply channels extend into the section roller shafts of all the blowing rollers and are communicated with all the air blowing mechanisms. In addition, the utility model also relates to double roller equipment provided with the supporting roller and a scale breaker adopting the double roller equipment. According to the utility model, the length of the supporting roller can be adjusted according to actual conditions, the supporting roller is convenient to overhaul and maintain, and the supporting roller sections which are easy to wear / break down can be replaced in a targeted manner; and the supporting rollers have a purging function and can be used for purging oxide scales generated by scale breaking of the strip steel, so that the scale breaking and dephosphorization effects are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to metallurgical equipment technical field, concretely relates to a supporting roller, the two -in -one roll equipment with the supporting roller of configuration and the scale breaker of adopting the two -in -one roll equipment. BACKGROUND

[0002] In the strip cold rolling post-processing line of metallurgical industry, the iron oxide scale is generated on the strip surface due to the hot rolling process, and the scale breaker is generally used to make the iron oxide scale on the strip surface fall off to avoid bringing a large amount of iron oxide scale into the pickling tank to increase the acid consumption. The bending roll scale breaker can achieve good scale breaking effect, the upper and lower surfaces of the strip are in different stress states when passing through the bending roll, and finally different forms of scale peeling effect are generated: one surface is stretched with tension, and the iron oxide scale will crack along the interface with the matrix; the other surface is affected by compression force, and the iron oxide scale will be crushed into a net shape. At present, the blowing equipment is mainly arranged on the inlet and outlet sides of the scale breaker or the scale breaker rack to blow and remove the peeled iron oxide scale; but the iron oxide scale is easy to enter the position between the work roll and the supporting roll and the bearing of the roll, which affects the normal operation of the scale breaking equipment and causes high maintenance frequency of the scale breaker. Moreover, in order to avoid scratching the strip, the blowing equipment needs to be a certain distance away from the strip, which leads to poor blowing effect or high blowing energy consumption. SUMMARY

[0003] The utility model relates to a supporting roller, the two -in -one roll equipment with the supporting roller of configuration and the scale breaker of adopting the two -in -one roll equipment, at least can solve partial defects of prior art.

[0004] The utility model relates to a supporting roller, the two -in -one roll equipment with the supporting roller of configuration and the scale breaker of adopting the two -in -one roll equipment, at least can solve partial defects of prior art.

[0005] At least part supporting roller section is the blowing roll, at least one end of the section roll body of blowing roll is equipped with air blowing mechanism, the supporting roller axle is equipped with compressed air supply channel and one end of supporting roller axle is connected with compressed air source, compressed air supply channel extends to the section roll axle of each blowing roll and communicates with each air blowing mechanism.

[0006] As one of the implementation manners, each supporting roller section is the blowing roll, and the air blowing mechanism is arranged at both ends of the blowing roll.

[0007] As one of the implementation manners, a transition channel is arranged in the section roll body and the section roll shaft of the blowing roll to communicate the compressed air supply channel and the air blowing mechanism.

[0008] As one of the embodiments, the air blowing mechanism comprises a plurality of air blowing units arranged along the circumference of the blowing roller, and each of the air blowing units is communicated with the compressed air supply channel.

[0009] As one of the embodiments, the air blowing direction of the air blowing unit is parallel to the axis of the blowing roller, or is inclined to the outer direction of the roller relative to the axis of the blowing roller.

[0010] The utility model also relates to a two -type formula roller equipment, including cooperation work roll and support roller, support roller adopts above -mentioned support roller.

[0011] As one of the embodiments, the support roller is two.

[0012] As one of the embodiments, there is an inter-roller spacing between each coaxially adjacent two support roller segments, and each inter-roller spacing is sequentially and spacedly distributed along the axial direction of the support roller.

[0013] The utility model also relates to a descaling machine, including the frame, a plurality of roller systems are sequentially arranged on the frame along the strip running direction, and at least part roller system adopts above -mentioned two -type formula roller equipment.

[0014] As one of the embodiments, at least one group of bending roller system, at least one group of transverse bending and straightening roller system and at least one group of multi-roller straightening roller system are sequentially arranged on the frame along the strip running direction,

[0015] The bending roller system comprises an upper bending roller arranged above the strip running channel and a lower bending roller arranged below the strip running channel,

[0016] The transverse bending and straightening roller system comprises a transverse bending and straightening roller arranged above the strip running channel,

[0017] The multi-roller straightening roller system comprises an upper multi-roller straightening roller arranged above the strip running channel and a lower multi-roller straightening roller arranged below the strip running channel,

[0018] At least one of the upper bending roller, the lower bending roller, the transverse bending and straightening roller, the upper multi-roller straightening roller and the lower multi-roller straightening roller adopts the two-type roller equipment.

[0019] The utility model has at least the following beneficial effects:

[0020] The support roller provided by the utility model is spliced by a plurality of support roller segments, the length of the support roller can be adjusted according to actual conditions (such as design width), the support roller is convenient to overhaul and maintain, and the support roller segment prone to wear / failure can be replaced in a targeted manner.

[0021] The utility model discloses, at least part of the supporting roller section is the purging roller, makes the supporting roller have the purging function, can purify the iron oxide skin that the strip steel scale breaking produces, improves scale breaking phosphorus removal effect, improves scale breaking equipment's work reliability, reduces maintenance frequency. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, the following description in the drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0023] Figure 1 The supporting roller section structure schematic diagram provided for the embodiment of the utility model is shown in the drawing.

[0024] Figure 2 The supporting roller section structure schematic diagram provided for the embodiment of the utility model is shown in the drawing.

[0025] Figure 3 The connecting structure schematic diagram of two supporting roller sections is shown in the drawing.

[0026] Figure 4 The structure schematic diagram of high-strength steel scale breaker provided for the embodiment of the utility model is shown in the drawing. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiment of the utility model will be clearly and completely described, obviously, the described embodiment only is a part of the embodiment of the utility model, instead of all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled person in the art without making creative labor belong to the scope of the utility model protection.

[0028] Embodiment one

[0029] As Figure 1The utility model embodiment provides a kind of support roller, including multiple support roller segments 100, each support roller segment 100 includes segment roller shaft 1002 and segment roller body 1001 being sleeved on the segment roller shaft 1002, each segment roller shaft 1002 is coaxially connected in sequence and forms support roller shaft 101;Wherein, the length of segment roller body 1001 is generally less than the length of segment roller shaft 1002, there is a certain spacing between adjacent segment roller body 1001, and an inter-roller interval area can be formed between adjacent two segment roller bodies 1001.In the structure, the length of support roller can be adjusted according to actual situation (such as design width etc.), and it is also convenient for the overhaul and maintenance of support roller, and the support roller segment 100 that is easy to wear / fault can be replaced specifically.

[0030] Preferably, as Figures 1-3 At least part of support roller segment 100 is purge roller, at least one end of the segment roller body 1001 of the purge roller is provided with air purge mechanism, the support roller shaft 101 is provided with compressed air supply channel and one end of support roller shaft 101 is connected with compressed air source, the compressed air supply channel extends into each segment roller shaft 1002 of purge roller and communicates with each air purge mechanism.

[0031] Based on the above structure, the support roller has a purging function, can blow off the mill scale generated by the strip steel, improve the phosphorus removal effect of the scale breaking, improve the working reliability of the scale breaking equipment, and reduce the maintenance frequency. Since the support roller is relatively close to the strip steel, a better purging effect can be obtained; and the support roller and the work roll follow, which can avoid the problem that the separate setting of the purging device is easy to scratch the strip steel.

[0032] Preferably, each support roller segment 100 is a purge roller; preferably, air purge mechanisms are provided at both ends of the purge roller.

[0033] Preferably, the above-mentioned air purge mechanism includes a plurality of air purge units 1003 arranged at intervals along the circumference of the purge roller, which can ensure the purging effect, especially ensure that there is always an air purge unit 1003 close to the working roller action area.

[0034] The above-mentioned air purge unit 1003 can be a compressed air jet opening provided at the end of the purge roller, or a compressed air nozzle provided at the end of the purge roller, the axis / air blowing direction of the compressed air jet opening / nozzle is parallel to the axis of the purge roller, or inclined to the outer direction of the roller relative to the axis of the purge roller.

[0035] Axial through holes can be provided on the support roller shaft 101 to form the above-mentioned compressed air supply channel 102, and one end of the support roller shaft 101 can be connected to a compressed air pipe through a rotary joint. Wherein, each segment roller shaft 1002 is provided with an axial through hole, and the axial through holes of each segment roller shaft 1002 are connected in series to form the above-mentioned compressed air supply channel 102.

[0036] The connection between the segment roller shafts 1002 includes but is not limited to detachable connection forms such as flange connection. A sealing ring 103 can be clamped at the connection between two adjacent segment roller shafts 1002, and / or a sealing sleeve 104 can be clamped at the connection between two adjacent segment roller shafts 1002 to ensure the sealing of the connection between the segment roller shafts 1002 and the smoothness of the compressed air supply channel 102. For the arrangement of the sealing sleeve 104, optionally, as shown in Figure 2 and Figure 3 mounting grooves are arranged at the ends of the segment roller shafts 1002, and the two ends of the sealing sleeve 104 are respectively embedded in the mounting grooves at the ends of the two adjacent segment roller shafts 1002; wherein the axial through hole in the segment roller shaft 1002 preferably adopts a stepped through hole with a small middle diameter and large diameters at both ends, the large diameter sections at both ends of the axial through hole correspondingly form two mounting grooves, the outer diameter of the sealing sleeve 104 is adapted to the large diameter of the axial through hole, and the inner diameter of the sealing sleeve 104 is adapted to the small diameter of the axial through hole (greater than, equal to or slightly smaller than the small diameter is feasible).

[0037] As shown in Figure 2 A transition channel 1004 can be arranged in the segment roller body 1001 and the segment roller shaft 1002 of the blowing roller to connect the compressed air supply channel 102 and the air blowing unit 1003.

[0038] The compressed air sprayed between the segment roller bodies 1001 can form an air curtain around the work roller, which can reduce the flying of broken scale dust, thereby reducing dust pollution, prolonging the service life of the support roller and other components, reducing the maintenance frequency of the broken scale machine, and improving the on-site operation environment; the compressed air acting on the surface of the strip steel can also play a role in loosening and blowing off the iron oxide scale.

[0039] Embodiment two

[0040] The embodiment of the utility model provides a two-fold roller equipment, including work roller and support roller who cooperates, the support roller adopts the support roller provided by above-mentioned embodiment one.

[0041] Among them, the work roller is used for contacting with the strip steel, the support roller is located at the side of the work roller away from the strip steel running channel, and is in contact with the work roller, and is used for supporting the work roller.

[0042] Preferably, two support rollers are arranged for one work roller.

[0043] Further, as shown in Figure 1, two support rollers in the same group, the two support roller segments 100 are arranged in a staggered manner, more specifically, each coaxially adjacent two segment roller bodies 1001 have an inter-roller spacing area, and the inter-roller spacing areas are sequentially and spacedly distributed along the support roller shaft 101, that is to say, the planes where the end faces of the two segment roller bodies 1001 of the inter-roller spacing area adjacent to each other intersect with the same segment roller body 1001 of the other support roller. The above structure can eliminate the support blind area that may occur due to the segmented design of the support roller, and ensure the support effect on the work roller.

[0044] In one of the embodiments, as Figure 1 , each support roller includes a first support roller segment with a relatively long length and a second support roller segment with a relatively short length, and the number and ratio of the first support roller segment and the second support roller segment can be designed according to actual conditions. Figure 1 In the illustrated embodiment, one first support roller segment and a plurality of second support roller segments are included (the ratio of the two includes but is not limited to 1:6), and the first support roller segment is located at one end of the support roller.

[0045] Embodiment three

[0046] The utility model embodiment provides a scale breaker, including frame, frame is sequentially arranged with a plurality of roller series along the strip steel running direction, and at least part roller series adopts two -layer formula roller equipment provided in above -mentioned embodiment two.

[0047] In one of the embodiments, as Figure 3 , the frame is sequentially arranged with at least one group of bending roller series, at least one group of transverse bending straightening roller series and at least one group of multi-roller straightening roller series along the strip steel running direction,

[0048] The bending roller series includes an upper bending roller 11 arranged above the strip steel running channel and a lower bending roller 12 arranged below the strip steel running channel,

[0049] The transverse bending straightening roller series includes a transverse bending straightening roller 21 arranged above the strip steel running channel,

[0050] The multi-roller straightening roller series includes an upper multi-roller straightening roller 31 arranged above the strip steel running channel and a lower multi-roller straightening roller 32 arranged below the strip steel running channel,

[0051] At least one of the upper bending roller 11, the lower bending roller 12, the transverse bending straightening roller 21, the upper multi-roller straightening roller 31 and the lower multi-roller straightening roller 32 adopts the two-layer formula roller equipment. Preferably, the upper bending roller 11, the lower bending roller 12, the transverse bending straightening roller 21, the upper multi-roller straightening roller 31 and the lower multi-roller straightening roller 32 all adopt the two-layer formula roller equipment.

[0052] Preferably, as Figure 3An entry guide roller 41 is arranged at the entry side of the housing to guide and support the strip and ensure the effect of the bending roller system. The entry guide roller 41 is preferably fixedly arranged, and the top surface height thereof is preferably 5-20 mm lower than the strip passing line.

[0053] Preferably, as Figure 3 An exit guide roller 43 is arranged at the exit side of the housing to guide and support the strip and ensure the effect of the multi-roller straightening roller system. The exit guide roller 43 is preferably fixedly arranged, and the top surface height thereof is preferably 5-20 mm lower than the strip passing line.

[0054] In one embodiment, the lower bending roller 12 is fixedly arranged, and the top surface height thereof is preferably 30-60 mm lower than the strip passing line. When the upper bending roller 11 is in operation, the bottom surface height of the upper bending roller 11 is lower than the strip passing line, and the bending and scale breaking of the strip are realized by the cooperation of the upper bending roller 11 and the lower bending roller 12.

[0055] Preferably, the upper bending roller 11 is provided with a first roll gap adjusting mechanism 13, and the upper bending roller 11 can be quickly pressed down and opened and the roll gap of the upper bending roller 11 can be accurately controlled under the action of the first roll gap adjusting mechanism 13. In one embodiment, the first roll gap adjusting mechanism 13 comprises a plurality of bending press-down cylinders arranged in sequence along the axial direction of the upper bending roller 11, the bending press-down cylinders are connected with the roller seats corresponding to the upper bending roller 11, and at least one of the bending press-down cylinders is provided with a roll gap detection unit. In the embodiment, one set of first roll gap adjusting mechanism 13 is provided with two bending press-down cylinders, and the two bending press-down cylinders are connected with the bearing seats at the two ends of the upper bending roller 11, respectively. The roll gap detection unit includes but is not limited to a linear position sensor.

[0056] Preferably, the bending roller system has a plurality of bending roller systems, and the bending roller systems are arranged in sequence along the running direction of the strip. Figure 3 In the shown scheme, two sets of bending roller systems are provided.

[0057] Preferably, the transverse bending straightening roller 21 is provided with a second roll gap adjusting mechanism 22, and the transverse bending straightening roller 21 can be quickly pressed down and opened and the roll gap of the transverse bending straightening roller 21 can be accurately controlled under the action of the second roll gap adjusting mechanism 22. In one embodiment, the second roll gap adjusting mechanism 22 comprises a plurality of transverse bending straightening press-down cylinders arranged in sequence along the axial direction of the transverse bending straightening roller 21, the transverse bending straightening press-down cylinders are connected with the roller seats corresponding to the transverse bending straightening roller 21, and at least one of the transverse bending straightening press-down cylinders is provided with a roll gap detection unit. In the embodiment, one set of second roll gap adjusting mechanism 22 is provided with two transverse bending straightening press-down cylinders, and the two transverse bending straightening press-down cylinders are connected with the bearing seats at the two ends of the transverse bending straightening roller 21, respectively. The roll gap detection unit includes but is not limited to a linear position sensor.

[0058] In one of the embodiments, the lower multi-roll straightening roller 32 is of a fixed structure.

[0059] Preferably, the upper multi-roll straightening roller 31 is provided with a third reduction adjustment mechanism 33, under the action of which the upper multi-roll straightening roller 31 can be quickly pressed down and opened, and the reduction of the upper multi-roll straightening roller 31 can be accurately controlled. In one of the embodiments, the third reduction adjustment mechanism 33 comprises a plurality of groups of multi-roll straightening adjustment units arranged in sequence along the axial direction of the upper multi-roll straightening roller 31, and each multi-roll straightening adjustment unit comprises a multi-roll straightening pressing cylinder or a plurality of multi-roll straightening pressing cylinders arranged in sequence along the running direction of the strip, and the multi-roll straightening pressing cylinder is connected with the roller frame of the corresponding upper multi-roll straightening roller 31. Preferably, as shown in Figure 3 , the multi-roll straightening adjustment unit comprises two multi-roll straightening pressing cylinders arranged in sequence along the running direction of the strip; preferably, the multi-roll straightening adjustment unit has two groups, which can be arranged close to the operating side end and the transmission side end of the roller frame respectively; in the combined scheme of the above two manners, the four multi-roll straightening pressing cylinders are distributed in a 2*2 matrix respectively, and the four multi-roll straightening pressing cylinders are preferably connected with the four corner portions of the roller frame respectively.

[0060] Preferably, the multi-roll straightening pressing cylinder is a servo hydraulic cylinder, which can accurately control the reduction and improve the flexibility and accuracy of the reduction distribution of the whole process of the descaling machine.

[0061] Further, as shown in Figure 3 , the upper multi-roll straightening roller 31 is further provided with an upper multi-roll straightening balancing mechanism 34, which can improve the straightening and descaling effect of the multi-roll straightening roller system, and the upper multi-roll straightening balancing mechanism 34 preferably comprises a plurality of balancing hydraulic cylinders arranged in sequence along the axial direction of the upper multi-roll straightening roller 31.

[0062] In the embodiment, a group of multi-roll straightening roller systems are arranged.

[0063] Further preferably, as shown in Figure 3 , an intermediate deflection roller 42 is arranged at the outlet of the transverse bending and straightening roller system, which can guide and support the strip to ensure the descaling effect. The intermediate deflection roller 42 is preferably fixedly arranged, and the top surface height thereof is preferably 5-20 mm lower than the steel passing line.

[0064] In the above design, after the upper bending roller 11, the transverse bending and straightening roller 21 and the upper multi-roll straightening roller 31 are quickly opened, the strip passing line does not contact any roller system of the descaling machine.

[0065] In the embodiment, the descaling scheme of the bending roller system-transverse bending and straightening roller system-multi-roll straightening roller system can further reasonably and smoothly distribute the reduction of each pass, improve the descaling effect of the strip, and effectively reduce the generation of surface cracks of the strip.

[0066] In one of the embodiments, at least one of the upper bending roller 11, the lower bending roller 12, the cross bending and straightening roller 21, the upper multi-roller straightening roller 31 and the lower multi-roller straightening roller 32 is in an integral roller box type structure, which can be integrally extracted along the roller body axis, facilitating installation and maintenance. Preferably, the upper bending roller 11, the lower bending roller 12, the cross bending and straightening roller 21, the upper multi-roller straightening roller 31 and the lower multi-roller straightening roller 32 are all in an integral roller box type structure.

[0067] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A support roller characterized by: The supporting roller comprises a plurality of supporting roller segments, each of which comprises a segment roller shaft and a segment roller body sleeved on the segment roller shaft, and the segment roller shafts are coaxially connected in sequence to form a supporting roller shaft; At least part of the supporting roller segments are purge rollers, at least one end of the segment roller body of the purge roller is provided with an air purge mechanism, the supporting roller shaft is provided with a compressed air supply channel, and one end of the supporting roller shaft is connected with a compressed air source, the compressed air supply channel extends into the segment roller shaft of each purge roller and communicates with each air purge mechanism.

2. The support roller of claim 1, wherein: Each of the supporting roller segments is a purge roller, and the air purge mechanism is arranged at both ends of the purge roller.

3. The support roller of claim 1, wherein: A transition channel is arranged in the segment roller body and the segment roller shaft of the purge roller to communicate the compressed air supply channel and the air purge mechanism.

4. The support roller of claim 1, wherein: The air purge mechanism comprises a plurality of air purge units arranged at intervals in the circumferential direction of the purge roller, and each air purge unit communicates with the compressed air supply channel.

5. The support roller of claim 4, wherein: The air blowing direction of the air purge unit is parallel to the axis of the purge roller, or is inclined to the outside of the roller with respect to the axis of the purge roller.

6. A two-high roll arrangement comprising a work roll and a backup roll in cooperation, characterized by: The supporting roller adopts the supporting roller according to any one of claims 1 to 5.

7. The dual roll apparatus of claim 6, wherein: The supporting roller is two.

8. The dual roll apparatus of claim 7, wherein: Each of the supporting roller segments is a purge roller, and the air purge mechanism is arranged at both ends of the purge roller.

9. A scale breaker comprising a frame on which a plurality of roller systems are arranged in series in a strip running direction, characterized in that: There is an inter-roller spacing between each coaxially adjacent two supporting roller segments, and each inter-roller spacing is distributed along the supporting roller shaft direction.

10. The scale breaker of claim 9, wherein: At least part of the roll system adopts the double-type roller equipment according to any one of claims 6 to 8. The machine frame is provided with at least one set of bending roll system, at least one set of cross-bending straightening roll system and at least one set of multi-roll straightening roll system in sequence along the running direction of the strip, The bending roll system comprises an upper bending roll arranged above the strip running channel and a lower bending roll arranged below the strip running channel, The cross-bending straightening roll system comprises a cross-bending straightening roll arranged above the strip running channel, The multi-roll straightening roll system comprises an upper multi-roll straightening roll arranged above the strip running channel and a lower multi-roll straightening roll arranged below the strip running channel, At least one of the upper bending roll, the lower bending roll, the cross-bending straightening roll, the upper multi-roll straightening roll and the lower multi-roll straightening roll adopts the double-type roller equipment.

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