Wet scale breaker for straightening metal plate strip

Abstract

The utility model relates to a wet-type scale breaker for straightening a metal plate strip, which is characterized in that at least one group of bending roller system, at least one group of transverse bending straightening roller system and a wringing roller system are sequentially arranged on a rack along the running direction of the strip, and the bending roller system comprises an upper bending roller and a lower bending roller; a first rolling reduction adjusting mechanism, a first upper wet type spraying mechanism and a lower wet type spraying mechanism are arranged; the transverse bending straightening roll system comprises transverse bending straightening rolls and is provided with a second rolling reduction adjusting mechanism and a second upper wet type spraying mechanism. The wringing roller system comprises an upper wringing roller and a lower wringing roller, and the upper wringing roller and the lower wringing roller are respectively connected with a quick-opening mechanism. According to the utility model, a scale breaking scheme of a bending roll system-transverse bending straightening roll system is adopted, so that the rolling reduction can be reasonably distributed, the scale breaking process is controlled, and a metal plate strip is straightened; and the bending roller system and the transverse bending straightening roller system are respectively provided with a wet type spraying mechanism, so that the fallen oxide scale can be reliably removed, and the oxide scale is prevented from influencing the surface quality of the strip or causing equipment failure.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical equipment, and in particular relates to a wet scale-breaking machine for straightening metal strips. Background Art

[0002] In the continuous production and processing line of strips in the metallurgical industry, descaling machines are widely used. Conventional descaling machines are prone to the shedding of iron oxide scales produced during the descaling process, which may accumulate on the surface of the strip and affect the surface quality of the strip, or accumulate on the lower roller box and affect the rotation of the lower roller box, thus causing equipment failure; at the same time, the dust raised by the falling iron oxide scales affects the working environment and causes environmental pollution. Utility Model Content

[0003] The utility model relates to a wet scale-breaking machine for straightening metal strips, which can at least solve some defects of the prior art.

[0004] The utility model relates to a wet scale breaker for straightening metal strips, comprising a frame, on which at least one set of bending rollers, at least one set of transverse bending straightening rollers and a squeeze roller are arranged in sequence along the running direction of the strip.

[0005] 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, the upper bending roller is provided with a first pressing amount adjustment mechanism; the bending roller system is provided with a first upper wet spray mechanism located above the strip running channel and a lower wet spray mechanism located below the strip running channel;

[0006] The transverse bending straightening roller system includes a transverse bending straightening roller arranged above the strip running channel, and the transverse bending straightening roller is equipped with a second pressing amount adjustment mechanism; the transverse bending straightening roller system is equipped with a second upper wet spray mechanism located above the strip running channel;

[0007] The squeezing roller system comprises an upper squeezing roller arranged above the strip running channel and a lower squeezing roller arranged below the strip running channel, and the upper squeezing roller and the lower squeezing roller are respectively connected with a quick-opening mechanism.

[0008] As one of the implementation modes, the bending roller system has two groups, including a first bending roller system and a second bending roller system which are arranged in sequence along the running direction of the strip.

[0009] As one of the embodiments, the first upper wet spray mechanism configured for the first bending roller system includes two groups of upper spray units respectively arranged on the inlet side and outlet side of the first bending roller system; the first upper wet spray mechanism configured for the second bending roller system includes a group of upper spray units arranged on the outlet side of the second bending roller system.

[0010] As one of the implementation modes, the lower wet spray mechanism includes two groups of lower spray units respectively arranged at the inlet side and the outlet side of the corresponding bending roller system.

[0011] As one of the implementation modes, the spraying direction of the lower spray unit is toward the support roller of the lower bending roller, or toward the area between the support roller of the lower bending roller and the bending wire.

[0012] As one of the embodiments, the support roller of the lower bending roller includes a plurality of support roller segments, each of which is coaxially mounted on the same support roller shaft at intervals in sequence, and an inter-roller area is formed between every two adjacent support roller segments; the lower spray unit includes a plurality of lower nozzles, and when the spraying direction of the lower spray unit is toward the support roller of the lower bending roller, specifically, each lower nozzle of the lower spray unit is directed toward each inter-roller area of ​​the support roller in a one-to-one correspondence.

[0013] As one of the implementation modes, the lower spray unit adopts a direct spray nozzle.

[0014] As one of the implementation modes, the second upper wet spray mechanism includes two groups of upper spray units respectively arranged at the inlet side and the outlet side of the transverse bending straightening roller system.

[0015] As one of the implementation modes, the first upper wet spray mechanism and the second upper wet spray mechanism both use fan-shaped nozzles, and the spray angle of the fan-shaped nozzles is in the range of 70 to 110 degrees.

[0016] As one of the embodiments, an inlet deflection roller is arranged at the inlet side of the frame, and / or an intermediate deflection roller is arranged between the squeeze roller system and the adjacent transverse bending straightening roller system.

[0017] The utility model has at least the following beneficial effects:

[0018] In the utility model, a descaling scheme of a bending roller system and a transverse bending and straightening roller system is adopted, which can reasonably distribute the pressing amount, control the descaling process, and has the function of straightening the metal plate and strip; the bending roller system and the transverse bending and straightening roller system are respectively equipped with wet spray mechanisms, which can reliably remove the detached iron oxide scale, prevent the iron oxide scale from affecting the surface quality of the strip or causing equipment failure, and improve the on-site working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 and Figure 2 A schematic structural diagram of a wet scale breaker provided in an embodiment of the utility model; Figure 1 It is the descaling state of the wet descaling machine. Figure 2 The wet scale breaker is in the open state;

[0021] Figure 3 This is a schematic diagram of the arrangement of the lower wet spray mechanism;

[0022] Figure 4 It is a structural schematic diagram of the support roller segment;

[0023] Figure 5 It is the spraying schematic diagram of the upper spraying unit. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1 and Figure 2 The present invention provides a wet scale breaker for straightening metal strips, comprising a frame, on which at least one set of bending rollers, at least one set of transverse bending straightening rollers and a squeeze roller are arranged in sequence along the running direction of the strip.

[0026] The bending roller system comprises an upper bending roller 11 arranged above the strip running channel and a lower bending roller 12 arranged below the strip running channel, wherein the upper bending roller 11 is provided with a first pressing amount adjustment mechanism 13; the bending roller system is provided with a first upper wet spray mechanism located above the strip running channel and a lower wet spray mechanism located below the strip running channel;

[0027] The transverse bending straightening roller system includes a transverse bending straightening roller 21 arranged above the strip running channel, and the transverse bending straightening roller 21 is equipped with a second pressing amount adjustment mechanism 22; the transverse bending straightening roller system is equipped with a second upper wet spray mechanism located above the strip running channel;

[0028] The squeezing roller system includes an upper squeezing roller 31 arranged above the strip running channel and a lower squeezing roller 32 arranged below the strip running channel. The upper squeezing roller 31 and the lower squeezing roller 32 are respectively connected with a quick-opening mechanism.

[0029] Among them, preferably, Figure 1 and Figure 2An inlet turning roller 41 is arranged at the inlet side of the frame to guide and support the strip to ensure the effect of the bending roller system. The inlet turning roller 41 is preferably fixed, and its top surface elevation is preferably 5 to 20 mm lower than the steel wire.

[0030] In one embodiment, the lower bending roller 12 is a fixed structure, and preferably, its top surface elevation is 30 to 60 mm lower than the steel wire. When the upper bending roller 11 is put into operation, the bottom surface elevation of the upper bending roller 11 is lower than the steel wire, and the upper bending roller 11 cooperates with the lower bending roller 12 to achieve bending and descaling of the strip.

[0031] Under the action of the first depression amount adjustment mechanism 13, the upper bending roller 11 can be quickly depressed and opened, and the depression amount of the upper bending roller 11 can be accurately controlled. In one embodiment, the first depression amount adjustment mechanism 13 includes a plurality of bending depression cylinders arranged in sequence along the axial direction of the upper bending roller, and the bending depression cylinders are connected to the roller seat of the corresponding upper bending roller 11, and at least one of the bending depression cylinders is equipped with a depression amount detection unit. In this embodiment, a group of first depression amount adjustment mechanisms 13 is equipped with two bending depression cylinders, and the two bending depression cylinders are respectively connected to the bearing seats at both ends of the upper bending roller 11. The above-mentioned depression amount detection unit includes but is not limited to the use of a linear position sensor.

[0032] Preferably, there are multiple groups of bending rollers, and the multiple groups of bending rollers are arranged in sequence along the running direction of the strip. Figure 1 and Figure 2 In the illustrated solution, two sets of bending roller systems are provided, including a first bending roller system and a second bending roller system which are sequentially arranged along the running direction of the strip.

[0033] Under the action of the second depression amount adjustment mechanism 22, the transverse bending straightening roller 21 can be quickly depressed and opened, and the depression amount of the transverse bending straightening roller 21 can be accurately controlled. In one embodiment, the second depression amount adjustment mechanism 22 includes a plurality of transverse bending straightening depression cylinders arranged in sequence along the axial direction of the transverse bending straightening roller, and the transverse bending straightening depression cylinders are connected to the roller seats of the corresponding transverse bending straightening rollers 21, and at least one of the transverse bending straightening depression cylinders is equipped with a depression amount detection unit. In this embodiment, a set of second depression amount adjustment mechanisms 22 is equipped with two transverse bending straightening depression cylinders, and the two transverse bending straightening depression cylinders are respectively connected to the bearing seats at both ends of the transverse bending straightening roller 21. The above-mentioned depression amount detection unit includes but is not limited to the use of a linear position sensor.

[0034] Preferably, if Figure 1 and Figure 2 An intermediate steering roller 42 is arranged between the squeeze roller system and the adjacent transverse bending straightening roller system, which can guide and support the strip to ensure the effect of the transverse bending straightening roller system. The intermediate steering roller 42 is preferably fixed, and its top surface elevation is preferably 5 to 20 mm lower than the steel wire.

[0035] Under the action of the quick opening mechanism, the upper squeeze roller 31 can be quickly pressed down and opened, the lower squeeze roller 32 can be quickly pressed up and opened, and the squeeze pressure can be accurately controlled; wherein, preferably, the upper top elevation of the lower squeeze roller 32 after being pressed up is lower than the strip passing line (preferably 5 to 20 mm lower), which can help improve the strip descaling effect. In one embodiment, the quick opening mechanism configured for the upper squeeze roller 31 includes a plurality of quick opening pressing cylinders arranged in sequence along the axial direction of the squeeze roller, and the quick opening pressing cylinders are connected to the roller seat of the upper squeeze roller 31; the quick opening mechanism configured for the lower squeeze roller 32 includes a plurality of quick opening pressing cylinders arranged in sequence along the axial direction of the squeeze roller, and the quick opening pressing cylinders are connected to the roller seat of the lower squeeze roller 32. In this embodiment, there are two quick opening pressing cylinders, and the two quick opening pressing cylinders are respectively connected to the bearing seats at both ends of the upper squeeze roller 31; there are two quick opening pressing cylinders, and the two quick opening pressing cylinders are respectively connected to the bearing seats at both ends of the lower squeeze roller 32. The quick-opening downward pressure cylinder includes but is not limited to a hydraulic cylinder; the quick-opening upward pressure cylinder includes but is not limited to a pneumatic cylinder.

[0036] In the above design, after the upper bending roller 11, the transverse bending straightening roller 21 and the squeezing roller system are quickly opened, the strip passing line does not contact any roller system of the scale breaker.

[0037] In one embodiment, at least one of the upper bending roller 11, the lower bending roller 12, the transverse bending straightening roller 21, the upper squeeze roller 31 and the lower squeeze roller 32 is an integral roller cassette structure, which can be integrally withdrawn along the roller body axis, which is convenient for installation and maintenance. Preferably, the upper bending roller 11, the lower bending roller 12, the transverse bending straightening roller 21, the upper squeeze roller 31 and the lower squeeze roller 32 are all integral roller cassette structures.

[0038] In one embodiment, at least one of the upper bending roller 11, the lower bending roller 12 and the transverse bending straightening roller 21 is a double roller structure, and the double roller structure includes a matching working roller and a support roller. Preferably, the upper bending roller 11, the lower bending roller 12 and the transverse bending straightening roller 21 are all double roller structures.

[0039] The working roll is used to contact the strip, and the supporting roll is located on the side of the working roll away from the strip running channel and is in contact with the working roll to support the working roll.

[0040] Preferably, one working roll is equipped with two support rolls.

[0041] In one embodiment, if Figure 3The support roller includes a plurality of support roller segments 100, each of which is coaxially connected in series, wherein each support roller segment 100 includes a segment roller shaft 1002 and a segment roller body 1001, each segment roller shaft 1002 is coaxially connected in series to form a support roller shaft 101, and there is a certain distance between adjacent segment roller bodies 1001. In this structure, the length of the support roller can be adjusted according to actual conditions (such as design width, etc.), and the support roller is easy to repair and maintain, and the support roller segments 100 that are prone to wear / failure can be replaced in a targeted manner.

[0042] Furthermore, if Figure 3 In the two support rollers of the same group, the support roller segments 100 of the two support rollers are arranged in a staggered manner. More specifically, there is an inter-roller spacing area between each coaxially adjacent two segmented roller bodies 1001, and the inter-roller spacing areas are sequentially spaced along the support roller axis 101. In other words, the plane where the end faces of the two segmented roller bodies 1001 adjacent to the inter-roller spacing area are located will intersect with the same segmented 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 working roller.

[0043] In one embodiment, if Figure 3 Each support roller includes a first support roller segment with a longer length and a second support roller segment with a shorter length. The number and ratio of the first support roller segment and the second support roller segment can be designed according to actual conditions. Figure 2 In the illustrated embodiment, a first support roller segment and a plurality of second support roller segments (the ratio of the two includes but is not limited to 1:6) are included, and the first support roller segment is located at one end of the support roller.

[0044] Preferably, if Figure 3 and Figure 4 At least part of the support roller segments 100 are blowing rollers, at least one end of the blowing roller is provided with an air blowing mechanism, a compressed air supply channel 102 is provided in the support roller shaft 101 and one end of the support roller shaft 101 is connected to a compressed air source, the compressed air supply channel 102 extends to the segment roller shaft 1002 of each blowing roller and is connected to each of the air blowing mechanisms.

[0045] Based on the above structure, the support roller has a purging function, which can purge the iron oxide scale produced by the strip descaling, thereby improving the descaling and dephosphorization effect. Since the support roller is closer to the strip, a better purging effect can be obtained; and the support roller moves with the working roller, which can avoid problems such as scratching the strip easily by setting up a separate purging device.

[0046] It is preferred that each support roller segment 100 is a blowing roller; and it is preferred that air blowing mechanisms are provided at both ends of the blowing roller.

[0047] Preferably, the air blowing mechanism comprises a plurality of air blowing units 1003 arranged at intervals along the circumference of the blowing roller, which can ensure the blowing effect, especially ensure that there is always an air blowing unit 1003 close to the working area of ​​the working roller.

[0048] The above-mentioned air blowing unit 1003 can be a compressed air nozzle opened at the end of the blowing roller, or it can be a compressed air nozzle arranged at the end of the blowing roller. The axis / blowing direction of the compressed air nozzle / nozzle is parallel to the axis of the blowing roller, or is inclined toward the outside of the roller relative to the axis of the blowing roller.

[0049] The support roller 101 may be provided with an axial through hole to form the compressed air supply channel 102, and one end of the support roller 101 may be connected to a compressed air pipe via a rotary joint. Figure 3 A transition channel 1004 may be provided in the segmented roller body 1001 and the segmented roller shaft 1002 of the purge roller to connect the compressed air supply channel 102 and the air purge unit 1003 .

[0050] The compressed air sprayed between the segmented roller bodies 1001 can form an air curtain around the working roller, which can reduce the scattering of scale-breaking dust, thereby reducing dust pollution, extending the service life of components such as support rollers, reducing the maintenance frequency of scale breakers, and improving the on-site working environment; the compressed air acting on the surface of the strip can also loosen and blow away the oxidized iron scale.

[0051] Preferably, if Figure 1 and Figure 2 The first upper wet spray mechanism configured for the first bending roller system includes two groups of upper spray units 51 respectively arranged at the inlet side and the outlet side of the first bending roller system; the first upper wet spray mechanism configured for the second bending roller system includes a group of upper spray units 51 arranged at the outlet side of the second bending roller system.

[0052] Preferably, if Figure 1 and Figure 2 The second upper wet spray mechanism includes two groups of upper spray units 51 respectively arranged on the inlet side and the outlet side of the transverse bending straightening roller system.

[0053] In this embodiment, a descaling scheme of the first bending roller system-the second bending roller system-the transverse bending and straightening roller system is adopted, which can reasonably distribute the pressing amount and control the descaling process, and according to the working characteristics of the first bending roller system, the second bending roller system and the transverse bending and straightening roller system, the upper spray intensity is reasonably distributed to ensure the spray removal effect of the iron oxide scale on the surface of the strip, and at the same time has a good energy-saving effect.

[0054] In particular, combining multiple methods such as spray removal and purging removal can significantly improve the removal effect of iron oxide scale, protect on-site equipment and improve the on-site working environment.

[0055] like Figure 5 Preferably, the first upper wet spray mechanism and the second upper wet spray mechanism both use fan-shaped nozzles, and the spray angle of the fan-shaped nozzles is in the range of 70 to 110 degrees. Among them, the multiple upper nozzles 511 of the upper spray unit 51 are sequentially spaced and distributed on a spray pipe along the axial direction of the bending roller, and the spray ranges of adjacent upper nozzles 511 overlap to ensure that the upper spray unit 51 can cover the entire width range of the strip.

[0056] Preferably, if Figure 1 and Figure 2 The lower wet spray mechanism comprises two groups of lower spray units 52 respectively arranged at the inlet side and the outlet side of the corresponding bending roller system. Among them, the multiple lower nozzles 521 of the lower spray unit 52 are sequentially spaced and distributed on a spray pipe along the axial direction of the bending roller.

[0057] Furthermore, if Figure 1 and Figure 2 The spray direction of the lower spray unit 52 is toward the support roller of the lower bending roller 12, or toward the area between the support roller of the lower bending roller 12 and the bending steel wire, which can better remove the iron oxide scale that falls off the lower surface of the strip and prevent the iron oxide scale from accumulating on the support roller or the lower roller box.

[0058] In the case where the above-mentioned support roller includes a plurality of support roller segments 101, a roller inter-region is formed between each two adjacent support roller segments 101; Figure 3 When the spraying direction of the lower spray unit 52 is toward the support roller of the lower bending roller 12, specifically, each lower nozzle 521 of the lower spray unit 52 is directed toward each inter-roller area of ​​the support roller in a one-to-one correspondence to remove the oxidized iron scale between the support rollers.

[0059] Preferably, the lower spray unit 52 uses a straight spray nozzle without a spray angle, such as a circular nozzle, which has a better spray effect on the target area.

[0060] The spraying medium used by the first / second upper wet spraying mechanism and the lower wet spraying mechanism is preferably water, such as tap water, industrial water, etc. The first / second upper wet spraying mechanism and the lower wet spraying mechanism can be arranged on the frame; in another embodiment, the first upper wet spraying mechanism is installed on the roller frame of the upper bending roller 11, and can follow the upper bending roller 11, which has higher reliability and does not need to frequently adjust the spraying direction due to the pressing and opening of the upper bending roller 11. Similarly, the second upper wet spraying mechanism can also be installed on the roller frame of the transverse bending straightening roller 21.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wet scale breaker for straightening metal strips, comprising a frame, characterized in that: The frame is provided with at least one set of bending rollers, at least one set of transverse bending straightening rollers and a squeezing roller system in sequence along the running direction of the strip. The bending roller system includes an upper bending roller arranged above the strip running channel and a lower bending roller arranged below the strip running channel, and the upper bending roller is provided with a first pressing amount adjustment mechanism; The bending roller system is equipped with a first upper wet spray mechanism located above the strip running channel and a lower wet spray mechanism located below the strip running channel; The transverse bending straightening roller system includes a transverse bending straightening roller arranged above the strip running channel, and the transverse bending straightening roller is equipped with a second pressing amount adjustment mechanism; the transverse bending straightening roller system is equipped with a second upper wet spray mechanism located above the strip running channel; The squeezing roller system comprises an upper squeezing roller arranged above the strip running channel and a lower squeezing roller arranged below the strip running channel, and the upper squeezing roller and the lower squeezing roller are respectively connected with a quick-opening mechanism.

2. The wet scale breaker for straightening metal strip according to claim 1, characterized in that: The bending roller system comprises two groups, including a first bending roller system and a second bending roller system which are arranged in sequence along the running direction of the strip.

3. The wet scale breaker for straightening metal strip according to claim 2, characterized in that: The first upper wet spray mechanism configured for the first bending roller system includes two groups of upper spray units respectively arranged on the inlet side and outlet side of the first bending roller system; the first upper wet spray mechanism configured for the second bending roller system includes a group of upper spray units arranged on the outlet side of the second bending roller system.

4. The wet scale breaker for straightening metal strip according to claim 1, characterized in that: The lower wet spray mechanism comprises two groups of lower spray units respectively arranged at the inlet side and the outlet side of the corresponding bending roller system.

5. The wet scale breaker for straightening metal strip according to claim 4, characterized in that: The spraying direction of the lower spray unit is toward the support roller of the lower bending roller, or toward the area between the support roller of the lower bending roller and the bending steel wire.

6. The wet scale breaker for straightening metal strip according to claim 5, characterized in that: The support roller of the lower bending roller includes a plurality of support roller segments, each of which is coaxially mounted on the same support roller shaft at intervals, and a roller gap area is formed between every two adjacent support roller segments; the lower spray unit includes a plurality of lower nozzles, and when the spray direction of the lower spray unit is toward the support roller of the lower bending roller, specifically, each lower nozzle of the lower spray unit is directed toward each roller gap area of ​​the support roller in a one-to-one correspondence.

7. A wet scale breaker for straightening metal strips according to any one of claims 4 to 6, characterized in that: The lower spray unit adopts a direct spray nozzle.

8. The wet scale breaker for straightening metal strip according to claim 1, characterized in that: The second upper wet spray mechanism comprises two groups of upper spray units respectively arranged at the inlet side and the outlet side of the transverse bending straightening roller system.

9. The wet scale breaker for straightening metal strip according to claim 1, characterized in that: The first upper wet spray mechanism and the second upper wet spray mechanism both use fan-shaped nozzles, and the spray angle of the fan-shaped nozzles is in the range of 70 to 110 degrees.

10. The wet scale breaker for straightening metal strip according to claim 1, characterized in that: An inlet deflection roller is arranged on the inlet side of the machine frame, and / or an intermediate deflection roller is arranged between the squeeze roller system and the adjacent transverse bending straightening roller system.

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