CN110605301A

CN110605301A - Composite oil removing device

Info

Publication number: CN110605301A
Application number: CN201910872015.XA
Authority: CN
Inventors: 钟天屹
Original assignee: Wuhan Qianye Zhonglian Technology Co Ltd
Current assignee: Wuhan Qianye Zhonglian Technology Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2019-12-24

Abstract

The invention belongs to the field of metallurgical equipment, and particularly relates to a composite oil removing device. The composite oil removing device comprises a rack, wherein the rack is of a square frame structure; the first-stage oil removing device is assembled at the front part of the rack and is used for roughly removing oil from oil stains on the surface of the steel belt passing through the rack from front to back; the steel rod oil removing device is assembled at the rear part of the rack and is used for performing fine oil removing treatment on oil stains on the surface of the steel belt passing through the steel rod from front to back; and the purging device is assembled behind the secondary oil removing device and is used for purging the surface of the steel belt passing through the purging device from front to back. The advantages are that: structural design is reasonable, through coarse deoiling, meticulous deoiling and the tertiary processing of sweeping for steel band surface is clean.

Description

Composite oil removing device

Technical Field

The invention belongs to the field of metallurgical equipment, and particularly relates to a composite oil removing device.

Background

In the cold rolling in-process of slab band, can use rolling oil to take away a large amount of rolling heat that produce when rolling usually, nevertheless after rolling is accomplished, the operation of the subsidiary rolling oil on the slab band can lead to the fact very big influence to other equipment, consequently can arrange deoiling device around the rolling mill usually, and the deoiling device is regarded as to the oil strip of scraping often using in pairs or water proof roller at present, and the during operation extrudees the steel band surface and reaches the deoiling effect, but these two kinds of modes all have theoretical defect: the deep-fried twisted dough sticks are in extrusion contact with the steel belt, the work is sliding friction, and under the working condition, soft materials need to be selected. Such as rubber, non-woven fabric and the like, but the closed oil removal effect of the soft material is not good when the steel belt moves at a high speed or the steel belt is not flat, and the loss is fast; the water proof roller extrudees the steel band, and work is rolling friction, allows to adopt metal material, generally exerts the pressure of directional steel band through the working roller both ends, makes the closed extrusion deoiling of steel rod in pairs, when slab band velocity of motion is high, for guaranteeing that the steel band surface is clean, can increase the pressure that the both ends were applyed, but this kind of condition increase pressure not only can reduce the deoiling quality, has still increased the risk of rolling disconnected area, and concrete analysis is as follows: because the two ends of the working roll are provided with the pressure perpendicular to the steel strip, the pressure is transmitted to the steel strip by the working roll, the steel strip is contacted with the middle part of the working roll to generate reaction force, the combined working roll is equivalent to two bending moments due to different force action points, the working roll is bent and cannot be closed, the edge of the steel strip is stressed greatly, the oil removing quality is reduced, and the risk of rolling and strip breakage is increased. With the development of the times, the requirement of downstream processes on the cleanliness of the surface of the steel strip is higher and higher, and under the background, a composite oil removing device is developed, adopts a multi-stage and multi-surface cleaning mode, greatly improves the treatment efficiency of the surface of the steel strip, and has strong adaptability to working conditions such as various speeds, thicknesses, plate types and the like.

Disclosure of Invention

The invention aims to provide a composite oil removing device, which effectively overcomes the defects of the prior art.

The technical scheme for solving the technical problems is as follows: a composite oil removing device comprises a rack, wherein the rack is of a square frame structure; the first-stage oil removing device is assembled at the front part of the rack and is used for roughly removing oil from oil stains on the surface of the steel belt passing through the rack from front to back; the steel rod oil removing device is assembled at the rear part of the rack and is used for performing fine oil removing treatment on oil stains on the surface of the steel belt passing through the steel rod from front to back; and the purging device is assembled behind the secondary oil removal device and is used for purging the surface of the steel belt passing through the purging device from front to back.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the primary oil removing device comprises a first upper supporting seat, a first lower supporting seat, a pair of copper alloy rollers, a first telescopic mechanism and a first elevation adjusting supporting component, wherein the first upper supporting seat and the first lower supporting seat are strip-shaped seat bodies horizontally arranged along the left-right direction, the left end and the right end of the first upper supporting seat are respectively slidably mounted on the left side and the right side of the rack and can slide up and down relative to the rack, the first elevation adjusting supporting component is mounted on the rack and can be adjusted in height, the first elevation adjusting supporting component is positioned below the first lower supporting seat and is in contact with the lower end of the first lower supporting seat and is used for supporting the first upper supporting seat and the first lower supporting seat, the first telescopic mechanism is respectively connected with the first upper supporting seat and the first lower supporting seat and can drive the first upper supporting seat and the first lower supporting seat to move relatively to be close to or far away from each other, the pair of copper alloy rollers are horizontally arranged along the left-right direction respectively and are arranged at the lower end of the first upper supporting seat and the upper end of the first lower supporting seat in a one-to-one correspondence mode, the axes of the first upper supporting seat and the first lower supporting seat are located in the same vertical plane, two ends of each copper alloy roller are arranged at the lower end of the corresponding first upper supporting seat and the upper end of the corresponding first lower supporting seat respectively through bearing assemblies in rotating connection with the copper alloy rollers, and the steel belt passes through the space between the pair of copper alloy rollers and performs coarse oil removal treatment on oil stains on the surface of the steel belt under the extrusion of the pair of copper alloy.

Further, the first elevation adjustment support assembly comprises a first chassis, a first sleeve, a first elastic part, a first ejector rod, a first adjustment bolt, a first flange, a first pre-tightening nut and a first adjustment nut, the first chassis is fixed at the upper end of the lower frame of the rack, the first sleeve is vertically fixed at the upper end of the first chassis, the upper end and the lower end of the first sleeve are open, the first ejector rod vertically penetrates through the first sleeve, the lower end of the first ejector rod penetrates through the lower frame of the rack and is in threaded connection with the first adjustment nut, a first threaded section is arranged at the upper end of the first ejector rod, a through hole vertically penetrating through the first flange is arranged in the middle of the first flange and is sleeved outside the first threaded section through the through hole, the first elastic part is elastically connected between the first flange and the first chassis, the first pre-tightening nut is in threaded connection outside the threaded section, and the screw rod of the first adjusting bolt is downward and is in threaded connection with the screw hole at the middle part of the upper end of the first ejector rod, the nut of the first adjusting bolt is in contact with the lower end of the first lower supporting seat, the first pre-tightening nut is screwed or unscrewed under the action of external force so as to adjust the compression allowance of the first elastic piece, and the first adjusting bolt and the first adjusting nut are screwed or unscrewed under the action of external force so as to adjust the height of the nut of the first adjusting bolt, so that the elevation height of the first lower supporting seat and the first upper supporting seat is adjusted.

Further, the first telescopic mechanism comprises two first oil cylinders, the two first oil cylinders are vertically installed at two ends of the upper end of the first upper supporting seat respectively, piston rods of the two first oil cylinders downwards penetrate through two ends of the first upper supporting seat and are connected with two ends of the upper end of the first lower supporting seat respectively through vertical first connecting pieces, and the two first oil cylinders are synchronously telescopic to drive the first upper supporting seat and the first lower supporting seat to move relatively to be close to or far away from each other.

Further, the secondary oil removing device comprises a second upper supporting seat, a second lower supporting seat, at least one pair of steel rollers, a second telescopic mechanism, a second elevation adjusting supporting component, an upper steel roller straight retaining device and a lower steel roller straight retaining device, wherein the second upper supporting seat and the second lower supporting seat are strip-shaped seat bodies horizontally arranged along the left and right directions, the left and right ends of the second upper supporting seat are respectively and slidably arranged on the left and right sides of the machine frame and can slide up and down relative to the machine frame, the second elevation adjusting supporting component is arranged on the machine frame and is adjustable in height, the second elevation adjusting supporting component is positioned below the second lower supporting seat and is in contact with the lower end of the second lower supporting seat and is used for supporting the second upper supporting seat and the second lower supporting seat, and the second telescopic mechanism is respectively connected with the second upper supporting seat and the second lower supporting seat, the upper steel bar straight retaining device and the lower steel bar straight retaining device are respectively correspondingly arranged on the second upper supporting seat and the second lower supporting seat and are respectively connected with the steel bars above and below correspondingly and used for respectively extruding the corresponding steel bars above or below and keeping the steel bars straight, and the steel strip passes between each pair of copper alloy rollers, and oil stains on the surface of the steel strip are subjected to fine oil removal treatment under the extrusion of the copper alloy rollers and the copper alloy rollers, wherein the diameter of the steel roller is smaller than that of the copper alloy roller.

Further, the second elevation adjustment support assembly comprises a second chassis, a second sleeve, a second elastic member, a second ejector rod, a second adjustment bolt, a second flange, a second pre-tightening nut and a second adjustment nut, the second chassis is fixed at the upper end of the lower frame of the rack, the second sleeve is vertically fixed at the upper end of the second chassis, the upper end and the lower end of the second sleeve are open, the second ejector rod vertically penetrates through the second sleeve, the lower end of the second ejector rod penetrates through the lower frame of the rack and is in threaded connection with the second adjustment nut, a second threaded section is arranged at the upper end of the second ejector rod, a through hole vertically penetrating through the second flange is arranged in the middle of the second flange and is sleeved outside the second threaded section through the through hole, the second elastic member is elastically connected between the second flange and the second chassis, the second pre-tightening nut is in threaded connection outside the second threaded section, and the screw rod of the second adjusting bolt is downward and is in threaded connection with the screw hole at the middle part of the upper end of the second ejector rod, the nut of the second adjusting bolt is in contact with the lower end of the second lower supporting seat, the second pre-tightening nut is screwed or unscrewed under the action of external force so as to adjust the compression allowance of the second elastic part, and the second adjusting bolt and the second adjusting nut are screwed or unscrewed under the action of external force so as to adjust the height of the nut of the second adjusting bolt, so that the elevation height of the second lower supporting seat and the second upper supporting seat is adjusted.

Further, the second telescopic mechanism comprises two second oil cylinders, the two second oil cylinders are respectively vertically installed at two ends of the upper end of the second upper supporting seat, piston rods of the two second oil cylinders downwards penetrate through two ends of the second upper supporting seat and are respectively connected with two ends of the upper end of the second lower supporting seat through vertical second connecting pieces, and the two second oil cylinders synchronously extend and retract so as to drive the second upper supporting seat and the second lower supporting seat to relatively move close to or far away from each other; the lower ends of the two second connecting pieces are respectively provided with a limiting block at the same height, the two second oil cylinders can synchronously contract the piston rods of the two second oil cylinders, and the second upper supporting seat and the second lower supporting seat are relatively moved to be close to the second upper supporting seat and abut against the limiting blocks, so that the minimum oil removing distance between each pair of the steel rods is determined.

Further, the number of the upper steel rod straight retaining devices corresponds to that of each steel rod located above one by one, each upper steel rod straight retaining device comprises a plurality of groups of upper bearing assemblies and a plurality of first cylinders, the groups of upper bearing assemblies are respectively arranged on the upper portion of each steel rod located above and are in rolling contact with the upper portion of the steel rod, the first cylinders are respectively vertically arranged at the upper ends of the second upper supporting seats, piston rods of the first cylinders downwards penetrate through the second upper supporting seats and are connected with the corresponding upper bearing assemblies, and the first cylinders are respectively used for driving the corresponding upper bearing assemblies to push the contact portions of the steel rods through the piston rods so as to adjust the steel rods to be kept straight.

Further, the number of the lower steel rod straight retaining devices corresponds to each steel rod positioned below one by one, each lower steel rod straight retaining device comprises a plurality of groups of lower bearing assemblies and a plurality of second cylinders, the groups of lower bearing assemblies are respectively arranged on the upper portion of each steel rod positioned below and are in rolling contact with the upper portion of the steel rod, the plurality of second cylinders are respectively vertically arranged at the lower ends of the second lower supporting seats, piston rods of the second cylinders downwards penetrate through the second lower supporting seats and are connected with the corresponding lower bearing assemblies, and the second cylinders are respectively used for driving the corresponding lower bearing assemblies to push the portions of the steel rods, which are in contact with the lower bearing assemblies, through the piston rods, so that the steel rods are adjusted to be kept straight.

Further, the blowing device comprises a screw rod, a driving mechanism and a blowing block, the screw rod is horizontally arranged at the rear side of the second upper supporting seat along the left-right direction, two ends of the first upper supporting seat are respectively arranged at the rear side of the second upper supporting seat through bearing seats which are rotatably connected with the first upper supporting seat, the driving mechanism is in transmission connection with one end of the screw rod and is used for driving the screw rod to rotate around the axis of the screw rod, the sweeping block is internally provided with a cavity, the lower end of the blowing block is provided with a blowing port communicated with the cavity, the blowing port is downward, the upper end of the blowing block is provided with a screw hole which penetrates through the blowing block from left to right, and is screwed outside the screw rod through the screw hole, the front side of the purging block is close to or contacted with the rear side of the second upper supporting seat, the upper part of the blowing block is provided with an air inlet communicated with the inner cavity of the blowing block, the air inlet is externally connected with an airflow blowing device through a pipeline, and the blowing block is used for blowing the surface of the steel strip passing through the blowing block downwards through a blowing opening.

The invention has the beneficial effects that: structural design is reasonable, through tertiary processing of coarse level deoiling, meticulous deoiling and sweeping for steel band surface is clean, can be in multiple speed, thickness, stable operation under the plate type etc. condition, has characteristics such as deoiling quality height, strong adaptability, security height.

Drawings

FIG. 1 is a schematic structural diagram of a composite oil removal device according to the present invention;

FIG. 2 is a schematic structural diagram of another perspective view of the composite oil removing device of the present invention;

FIG. 3 is a structural sectional view of the composite oil removing device of the present invention;

FIG. 4 is a schematic structural diagram of a primary oil removing device in the composite oil removing device according to the present invention;

FIG. 5 is a schematic structural diagram of a secondary oil removing device in the composite oil removing device according to the present invention;

FIG. 6 is a schematic structural diagram of a purging device in the composite oil removing device according to the present invention;

FIG. 7 is a cross-sectional view of a first elevation adjustment support assembly of the composite oil removal device of the present invention;

fig. 8 is a structural sectional view of a second elevation adjustment support assembly in the composite oil removing device of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a frame, 2, a first-level oil removing device, 3, a second-level oil removing device, 4, a purging device, 21, a first upper supporting seat, 22, a first lower supporting seat, 23, a copper alloy roller, 24, a first telescopic mechanism, 25, a first elevation adjusting supporting component, 31, a second upper supporting seat, 32, a second lower supporting seat, 33, a steel roller, 34, a second telescopic mechanism, 35, a second elevation adjusting supporting component, 36, an upper steel rod straight retaining device, 37, a lower steel rod straight retaining device, 41, a screw, 42, a driving mechanism, 43, a purging block, a first oil cylinder, 242, a first connecting piece, 251, a first chassis, 252, a first sleeve, 253, a first elastic piece, 254, a first ejector rod, 255, a first adjusting bolt, 256, a first flange, 257, a first pre-tightening nut, 258, a first adjusting nut, 261, a first rack, 263, a first gear, a second gear, The first connecting rod 341, the second oil cylinder 342, the second connecting piece 343, the limiting block 351, the second chassis 352, the second sleeve 353, the second elastic piece 354, the second ejector rod 355, the second adjusting bolt 356, the second flange 357, the second pre-tightening nut 358, the second adjusting nut 361, the upper bearing assembly 362, the first air cylinder 371, the lower bearing assembly 372, the second air cylinder 391, the second rack 392, the second gear 393 and the second connecting rod.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Example (b): as shown in fig. 1 to 6, the composite oil removing device of the present embodiment includes a frame 1, where the frame 1 has a square frame structure; the primary oil removing device 2 is assembled at the front part of the rack 1, and is used for roughly removing oil from oil stains on the surface of a steel belt passing through the primary oil removing device 2 from front to back; the secondary oil removing device 3 is characterized in that the steel rod oil removing device 2 is assembled at the rear part of the rack 1 and is used for performing oil stain fine oil removing treatment on the surface of a steel belt passing through the rack from front to back; and the blowing device 4 is assembled behind the secondary oil removal device 3 and used for blowing the surface of the steel strip passing through the blowing device 4 from front to back.

During production, the steel band is by in proper order preceding back through one-level deoiling device 2, second grade deoiling device 3 and sweep device 4 and carry out surface oil stain coarse level processing, meticulous processing and surface residue respectively and sweep the processing, can ensure finally that the steel band surface clean degree is higher, and whole device adopts the clean mode of multistage multiaspect, very big improvement the treatment effeciency on steel band surface, have very strong adaptability to operating modes such as multiple speed, thickness, board type.

As a preferred embodiment, as shown in fig. 1, 2, 3 and 4, the primary oil removing device 2 includes a first upper support 21, a first lower support 22, a pair of copper alloy rollers 23, a first telescopic mechanism 24 and a first elevation adjustment support assembly 25, wherein the first upper support 21 and the first lower support 22 are both bar-shaped bases horizontally arranged in the left-right direction, the left and right ends of the first upper support 21 are respectively slidably mounted on the left and right sides of the frame 1 and can slide up and down relative to the frame 1, the first elevation adjustment support assembly 25 is mounted on the frame 1 and is adjustable in height, the first elevation adjustment support assembly 25 is located below the first lower support 22 and is in contact with the lower end of the first lower support 22 for supporting the first upper support 21 and the first lower support 22, the first telescopic mechanism 24 is respectively connected to the first upper support 21 and the first lower support 22, the steel strip can drive the first upper supporting seat 21 and the first lower supporting seat 22 to move relatively to approach or separate from each other, the pair of copper alloy rollers 23 are horizontally arranged along the left-right direction and are respectively arranged at the lower end of the first upper supporting seat 21 and the upper end of the first lower supporting seat 22 in a one-to-one correspondence manner, the axes of the copper alloy rollers 23 and the upper end of the first lower supporting seat 22 are positioned in the same vertical plane, two ends of the copper alloy rollers 23 are respectively arranged at the lower end of the corresponding first upper supporting seat 21 and the upper end of the corresponding first lower supporting seat 22 through bearing assemblies rotatably connected with the copper alloy rollers, the steel strip passes between the pair of copper alloy rollers 23 and carries out coarse oil removal treatment on oil stains on the surface of the steel strip under the extrusion of the copper alloy rollers, and during production, the elevations of the first upper supporting seat 21 and the first lower supporting seat 22 are adjusted through the first elevation adjusting supporting assembly 25 (namely, i.e. the steel strip incoming line position), then adjusting the relative position between the first upper support seat 21 and the first lower support seat 22, i.e. adjusting the distance between the pair of copper alloy rollers 23, according to the thickness dimension of the steel strip by the contraction of the first telescopic mechanism 24, so that the pair of copper alloy rollers 23 extrude the steel strip with appropriate parameters, and performing rough treatment on oil stains on the surface of the steel strip under the condition that the copper alloy rollers 23 are in relative rolling contact with the steel strip, so as to achieve the purpose that the pair of copper alloy rollers 23 is horizontally closed to the steel wire passing position set by the equipment to extrude the steel strip for rough oil removal.

Optimally, the first pressing plates are vertically arranged on the frames on the left side and the right side of the rack 1 respectively, the first sliding grooves which penetrate through the first upper supporting seat 21 and the first lower supporting seat 22 from top to bottom are formed in the end portions of the left end and the right end of the first upper supporting seat and the end portions of the right end of the first lower supporting seat 22 from top to bottom respectively, the first pressing plates on the two sides stretch into the corresponding first sliding grooves respectively, so that the first upper supporting seat 21 and the first lower supporting seat 22 can slide up and down relatively along the first pressing plates on the two sides, meanwhile, the design reduces the shaking range of the first upper supporting seat 21 and the first lower supporting seat 22 along the front.

As a preferred embodiment, as shown in fig. 7, the first elevation adjustment support assembly 25 includes a first base plate 251, a first sleeve 252, a first elastic member 253, a first push rod 254, a first adjustment bolt 255, a first flange 256, a first pre-tightening nut 257 and a first adjustment nut 258, the first base plate 251 is fixed to an upper end of a lower frame of the frame 1, the first sleeve 252 is vertically fixed to an upper end of the first base plate 251 and has open upper and lower ends, the first push rod 254 vertically passes through the first sleeve 252 and has a lower end penetrating through the lower frame of the frame 1 and is threadedly connected to the first adjustment nut 258, a first threaded section is provided at an upper end of the first push rod 254, a through hole vertically penetrating through the first flange 256 is provided at a middle portion of the first flange and is sleeved outside the first threaded section through the through hole, the first elastic member 253 is elastically connected between the first flange 256 and the first base plate 251, the first pre-tightening nut 257 is screwed outside the threaded section and abuts against the upper end of the first flange 256, the screw of the first adjusting bolt 255 is screwed downward and screwed into the screw hole in the middle of the upper end of the first push rod 254, the nut of the first adjusting bolt 255 contacts the lower end of the first lower support 22, the first pre-tightening nut 257 is screwed or unscrewed by an external force to adjust the compression margin of the first elastic member 253, the first adjusting bolt 255 and the first adjusting nut 258 are screwed or unscrewed by an external force to adjust the height of the nut of the first adjusting bolt 255, so as to adjust the elevation height of the first lower support 22 and the first upper support 21, and during adjustment, the first adjusting bolt 255 is unscrewed upward to push the first lower support 22 and the first upper support 21 to move upward for a certain distance to achieve the purpose of adjusting the steel wire upward, or, make first ejector pin 254 move down certain distance relative to frame 1 and reach the mesh of passing the copper wire down through upwards screwing up first adjusting nut 258, in addition, can adjust the compression allowance of first elastic component 253 through screwing up first pretension nut 257 to utilize the damping effect of first elastic component 253 to effectively reduce the steel band and shake, make the deoiling process steady, reduce the broken tape and take place the probability, whole design is very reasonable, the operation is also more succinct.

Preferably, the first elastic member 253 is a spring, which is sleeved outside the first push rod 254, and the upper end and the lower end of the spring respectively abut against the lower end of the first flange 256 and the upper end of the frame 1.

As a preferred embodiment, the first telescopic mechanism 24 includes two first oil cylinders 241, the two first oil cylinders 241 are respectively vertically installed at two ends of the upper end of the first upper supporting seat 21, piston rods of the two first oil cylinders 241 both downwardly penetrate through two ends of the first upper supporting seat 21 and are respectively connected with two ends of the upper end of the first lower supporting seat 22 through vertical first connecting pieces 242, the two first oil cylinders 241 are synchronously telescopic to drive the first upper supporting seat 21 and the first lower supporting seat 22 to relatively move close to or away from each other, during operation, the piston rods of the two first oil cylinders 241 are synchronously telescopic to achieve the purpose of synchronously driving the first upper supporting seat 21 and the first lower supporting seat 22 to relatively move close to or away from each other through the two first connecting pieces 242, and the design is reasonable, and the operation is relatively stable.

As a preferred embodiment, as shown in fig. 1, 2, 3, and 4, the primary oil removing device 2 further includes a first synchronous telescopic connection assembly, the first synchronous telescopic connection assembly includes two vertical first racks 261, two first gears 262, and a first connecting rod 263, the two first racks 261 are vertically mounted at two ends of an upper end of the first upper supporting seat 21 through first brackets, respectively, first sliding rails are vertically mounted on one side of the first racks 261 on the first brackets, respectively, first sliding seats are slidably mounted on front sides or rear sides of the two first sliding rails, respectively, the first connecting rod 263 is horizontally connected between the two first sliding seats, the two first gears 262 are coaxially and rotatably mounted at one ends of the two first sliding seats, which are relatively far away, and the two first gears 262 are respectively engaged with the two first racks 261 in a one-to-one correspondence manner, during the operation, two first racks 261 reciprocate along with first upper supporting seat 21 is synchronous, thereby make two first gear 262 synchronous rotations, link to each other as an organic wholely through first connecting rod 263 because of two second gear 262, consequently, under this first synchronous flexible coupling assembling's supplementary, the error when two first hydro-cylinders 241 synchronous operation can be eliminated, make the degree of synchronism of both operations higher, the crooked situation appears in first upper supporting seat 21 and/or first lower support seat 22 of avoiding appearing, it is impartial everywhere to ensure the interval between a pair of copper alloy roller 23, thereby reach better extrusion deoiling effect.

As a preferred embodiment, as shown in fig. 1, 2, 3 and 5, the secondary oil removing device 3 comprises a second upper supporting seat 31, a second lower supporting seat 32, at least a pair of steel rollers 33, a second telescopic mechanism 34, a second elevation adjusting supporting component 35, an upper steel roller flat keeping device 36 and a lower steel roller flat keeping device 37, wherein the second upper supporting seat 31 and the second lower supporting seat 32 are both bar-shaped seat bodies horizontally arranged along the left and right direction, the left and right ends of the second upper supporting seat 31 are respectively slidably mounted on the left and right sides of the frame 1 and can vertically slide relative to the frame 1, the second elevation adjusting supporting component 35 is mounted on the frame 1 and is adjustable in height, the second elevation adjusting supporting component 35 is located below the second lower supporting seat 32 and contacts with the lower end of the second lower supporting seat 32 for supporting the second upper supporting seat 31 and the second lower supporting seat 32, the second telescopic mechanism 34 is respectively connected to the second upper supporting seat 31 and the second lower supporting seat 32, and can drive the second upper supporting seat 31 and the second lower supporting seat 32 to move closer to or away from each other, at least one pair of the steel rollers 33 are respectively horizontally arranged along the left-right direction, each pair of the steel rollers 33 are respectively arranged at the lower end of the second upper supporting seat 31 and the upper end of the second lower supporting seat 32 in a one-to-one correspondence manner, and the axes of the two are located in the same vertical plane, two ends of the steel rollers 33 are respectively installed at the lower end of the corresponding second upper supporting seat 31 and the upper end of the second lower supporting seat 32 through bearing assemblies rotatably connected thereto, the upper straight retaining device 36 and the lower straight retaining device 37 are respectively installed on the second upper supporting seat 31 and the second lower supporting seat 32 in a corresponding manner, and are respectively connected to the steel rollers 33 located above and below in a corresponding manner, the steel bar passes through the space between each pair of copper alloy rollers 23, and the surface oil stain of the steel bar is finely removed under the extrusion of the copper alloy rollers 23, the diameter of the steel roller 33 is smaller than that of the copper alloy rollers 23, the second telescopic mechanism 34 realizes the contraction closing between each pair of steel bars 33, the elevation of each pair of steel bars 33 steel wire is adjusted through the second elevation adjusting and supporting component 35 at the bottom, the comprehensive effect is realized, the purpose of extruding the steel bar to the set steel wire position to remove the oil stain of the steel bar is realized, in addition, the large diameter of the copper alloy rollers 23 can separate the rolling oil with large liquid level, the deformation of the steel bars 33 under the same pressure is small due to the small diameter, the pressure is large, the extrusion effect on the steel bar is strong, the oil stain on the surface of the steel bar can be well removed, the acting forces of the upper steel bar straight keeping device 36 and the lower straight keeping device 37 are respectively and directly sensed each time The deformation of the steel roller 33 is eliminated on the steel roller 33 which is distributed up and down, and the oil removing efficiency is improved.

Preferably, the steel rods 33 are provided with a plurality of pairs, the pairs are distributed at intervals in the front-rear direction, the axial leads of all the steel rods 33 positioned above and/or below are respectively positioned in the same horizontal plane, and the sizes of the steel rods 33 are consistent, so that the design enables the steel strip to sequentially pass through the plurality of pairs of steel rods 33 from front to back, and the oil removing effect is better improved.

Optimally, the second clamp plates are vertically arranged on the frames on the left side and the right side of the frame 1 respectively, first sliding grooves which penetrate through the second upper support seat 31 and the second lower support seat 32 from top to bottom are formed in the end portions of the left end and the right end of the second upper support seat and the end portions of the right end and the left end of the second lower support seat 32 respectively, the second clamp plates on the two sides stretch into the corresponding second sliding grooves respectively, so that the second upper support seat 31 and the second lower support seat 32 can slide up and down relatively along the second clamp plates on the two sides, meanwhile, the design reduces the shaking range of the second upper support seat 31 and the second lower support seat 32 along the front-back direction when.

As a preferred embodiment, as shown in fig. 8, the second elevation adjustment support assembly 35 includes a second base plate 351, a second sleeve 352, a second elastic member 353, a second push rod 354, a second adjustment bolt 355, a second flange 356, a second pre-tightening nut 357, and a second adjustment nut 358, the second base plate 351 is fixed to an upper end of a lower frame of the frame 1, the second sleeve 352 is vertically fixed to an upper end of the second base plate 351, upper and lower ends of the second sleeve are open, the second push rod 354 vertically passes through the second sleeve 352, a lower end of the second push rod 354 passes through a lower frame of the frame 1, the second adjustment nut 358 is screwed into the second sleeve 352, a second threaded portion is provided at an upper end of the second push rod 354, a through hole vertically passes through a middle portion of the second flange 356, and is sleeved outside the second threaded portion through the through hole, the second elastic member 353 is elastically connected between the second flange 356 and the second base plate 351, the second pre-tightening nut 357 is screwed outside the second screw thread section and abuts against the upper end of the second flange 356, the screw of the second adjusting bolt 355 is screwed downward and is screwed into the screw hole in the middle of the upper end of the second push rod 354, the nut of the second adjusting bolt 355 contacts the lower end of the second lower support base 32, the second pre-tightening nut 357 is screwed or unscrewed by an external force to adjust the compression margin of the second elastic member 353, the second adjusting bolt 355 and the second adjusting nut 358 are screwed or unscrewed by an external force to adjust the height of the nut of the second adjusting bolt 355, so as to adjust the elevation height of the second lower support base 32 and the second upper support base 31, and during adjustment, the second adjusting bolt 355 is unscrewed upward to push the second lower support base 32 and the second upper support base 31 to move upward for a certain distance to achieve the purpose of adjusting the steel wire upward, or, make second ejector pin 354 move down the certain distance and reach the mesh of passing the steel wire downwards relative to frame 1 through screwing up second adjusting nut 358, in addition, can adjust the compression allowance of second elastic component 353 through screwing up second pretension nut 357, thereby utilize the damping effect of second elastic component 353 to effectively reduce the steel band and shake, make the deoiling process steady, reduce the broken tape and take place the probability, whole design is very reasonable, the operation is also more succinct.

Preferably, the second elastic member 353 is a spring, which is sleeved outside the second top rod 354, and the upper end and the lower end of the spring respectively abut against the lower end of the second flange 356 and the upper end of the frame 1.

As a preferred embodiment, the second telescopic mechanism 34 includes two second oil cylinders 341, the two second oil cylinders 341 are respectively vertically installed at two ends of the upper end of the second upper supporting seat 31, piston rods of the two second oil cylinders 341 both downwardly penetrate through two ends of the second upper supporting seat 31 and are respectively connected to two ends of the upper end of the second lower supporting seat 32 through vertical second connecting members 342, the two second oil cylinders 341 are synchronously telescopic to drive the second upper supporting seat 31 and the second lower supporting seat 32 to relatively move closer or farther, the lower ends of the two second connecting members 342 are respectively provided with a stopper 343 at the same height, the two second oil cylinders 341 can synchronously contract the piston rods thereof and make the second upper supporting seat 31 and the second lower supporting seat 32 relatively move closer to the second upper supporting seat 31 and the stopper 343, so as to determine the minimum oil removing distance between each pair of the steel rods 33 (the distance is the distance for extruding the steel belt) The design of the limiting block 343 can effectively position the oil removing space of each pair of steel rods 33, and during operation, the piston rods of the two second oil cylinders 341 stretch synchronously, so that the purpose of synchronously driving the second upper supporting seat 31 and the second lower supporting seat 32 to move relatively close to or far away from each other through the two second connecting pieces 342 is achieved, and the oil removing device is reasonable in design and stable in operation.

As a preferred embodiment, as shown in fig. 1, 2, 3 and 5, the two-stage oil removing device 3 further includes a second synchronous telescopic connection assembly, the second synchronous telescopic connection assembly includes two vertical second racks 391, two second gears 392 and a second connecting rod 393, the two second racks 391 are vertically mounted at two ends of the upper end of the second upper supporting seat 31 respectively through second brackets, second sliding rails are vertically mounted at one side of the second brackets located at the second racks 391 respectively, second sliding seats are slidably mounted at the front sides or the rear sides of the two second sliding rails respectively, the second connecting rod 393 is horizontally connected between the two second sliding seats, the two second gears 392 are coaxially and rotatably mounted at one ends of the two second sliding seats which are relatively far away, and the two second gears 392 are respectively engaged with the two second racks 391 in a one-to-one correspondence manner, during operation, the two second racks 391 move up and down synchronously along with the second upper support 31, so that the two second gears 392 rotate synchronously, and the two second gears 392 are connected into a whole through the second connecting rod 393, so that with the aid of the first synchronous telescopic connecting assembly, errors caused when the two second oil cylinders 341 run synchronously can be eliminated, the synchronous degree of the two operation is higher, the situation that the second upper support 31 and/or the second lower support 32 are inclined is avoided, the situation that the pair of steel rollers 23 are not inclined relatively is ensured, and the better oil squeezing and removing effect is achieved.

As a preferred embodiment, as shown in fig. 2 and 5, the number of the upper roller flat holding devices 36 corresponds to each of the upper rollers 33 one by one, the upper roller flat holding devices 36 include a plurality of sets of upper bearing assemblies 361 and a plurality of first air cylinders 362, the plurality of sets of upper bearing assemblies 361 are respectively disposed on the upper portion of each of the upper rollers 33 and are in rolling contact with the upper portion of the upper roller 33, the plurality of first air cylinders 362 are respectively vertically mounted on the upper end of the second upper supporting seat 31, a piston rod of each of the first air cylinders 362 passes through the second upper supporting seat 31 downward and is connected with the corresponding upper bearing assembly 361, the first air cylinders 362 are respectively used for driving the corresponding upper bearing assembly 361 to push the portion of the upper roller 33 in contact therewith through the piston rod, so as to adjust the roller 33 to be flat, specifically, during operation, the acting force of the first cylinder 362 is directly transmitted to the corresponding steel roller 33 through the corresponding upper bearing assembly 361, the acting points of the upper bearing assemblies 361 are distributed on the roll surface of the whole steel roller 33, the acting points of the upper bearing assemblies 361 and the acting points of the reaction force of the steel belt to the steel roller 33 are approximately the same, the bending moment generated by the traditional force applying mode is eliminated, the deformation of the steel roller 33 is eliminated, and the oil removing efficiency is improved.

As a preferred embodiment, as shown in fig. 2 and 5, the number of the lower steel rod flat holding devices 37 corresponds to each of the steel rods 33 located therebelow, the lower steel rod flat holding devices 37 include a plurality of sets of lower bearing assemblies 371 and a plurality of second cylinders 372, the plurality of sets of lower bearing assemblies 371 are respectively disposed on the upper portion of each of the steel rods 33 located therebelow and are in rolling contact with the upper portion of the steel rods 33, the plurality of second cylinders 372 are respectively vertically mounted on the lower end of the second lower support base 32, the piston rod of each of the second cylinders 372 downwardly penetrates through the second lower support base 32 and is connected with the corresponding lower bearing assembly 371, the second cylinders 372 are respectively used for driving the corresponding lower bearing assemblies 371 to push the portion of the steel rods 33 in contact therewith through the piston rod, so as to adjust the flat holding of the steel rods 33, specifically, during operation, the acting force of the second cylinder 372 is directly sensed on the corresponding steel roller 33 through the corresponding lower bearing assembly 371, the acting points of the lower bearing assemblies 371 are distributed on the roller surface of the whole steel roller 33, the acting points of the lower bearing assemblies 371 and the acting points of the reaction force of the steel strip on the steel roller 33 are approximately the same, the bending moment generated by the traditional force application mode is eliminated, the deformation of the steel roller 33 is eliminated, and the oil removal efficiency is improved.

As a preferred embodiment, as shown in fig. 6, the purging device 4 comprises a screw 41, a driving mechanism 42 and a purging block 43, the screw 41 is horizontally disposed at the rear side of the second upper supporting seat 31 in the left-right direction, both ends of the screw are respectively mounted at the rear side of the second upper supporting seat 31 through bearing seats rotatably connected with the screw, the driving mechanism 42 is in transmission connection with one end of the screw 41 for driving the screw 41 to rotate around the axis thereof, the purging block 43 has a cavity therein, a purging port communicating with the cavity is provided at the lower end thereof, the purging port is directed downward, the purging block 43 has a screw hole penetrating through the screw in the left-right direction at the upper end thereof and is screwed outside the screw 41 through the screw hole, the front side of the purging block 43 is close to or in contact with the rear side of the second upper supporting seat 31, and an air inlet communicating with the cavity therein at the upper part thereof, and this air inlet passes through the external air current of pipeline and sweeps the device, and above-mentioned sweeping block 43 is used for sweeping the processing through the steel band surface of sweeping the mouth below through it, during the operation, orders about screw rod 41 rotatory through actuating mechanism 42 to adjust and sweep the displacement of block 43 along left and right directions on screw rod 41, thereby carry out effective, comprehensive sweeping to the steel band surface of below process, promote the scrubbing effect.

Preferably, the general screw 41 is provided in two sections, one end of each of the two sections of screw 41 is coaxially connected through a coupling, the two sections of screw 41 are respectively and correspondingly provided with the purging blocks 43, the mutually distant ends of the two sections of screw 41 are respectively installed at the rear side of the second upper supporting seat 31 through bearing seats rotatably connected with the two sections of screw 41, the driving mechanism 42 is in transmission connection with the end of one of the two sections of screw 41 distant from the other, and the two sections of screw 41 are optimally in opposite thread directions, so that the purging blocks 43 on the two sections of screw 41 can relatively move close to or away from each other under the driving of the driving mechanism 42 to perform moving cleaning, the purging range of the driving mechanism can cross the surface of the steel strip in the left-right direction, and a good.

The drive mechanism 42 is typically a hand wheel, and may be a motor or the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A composite oil removal device, comprising:

the device comprises a rack (1), wherein the rack (1) is of a square frame structure;

the primary oil removing device (2), the steel rod oil removing device (2) is assembled at the front part of the rack (1) and is used for roughly removing oil from oil stains on the surface of a steel belt passing through the rack from front to back;

the secondary oil removing device (3), the steel stick oil removing device (2) is assembled at the rear part of the rack (1) and is used for carrying out oil stain fine oil removing treatment on the surface of the steel belt passing through the rack from front to back;

and the purging device (4) is assembled behind the secondary oil removal device (3) and is used for purging the surface of the steel strip passing through the purging device from front to back.

2. The composite oil removing device according to claim 1, characterized in that: one-level deoiling device (2) is including first last supporting seat (21), first supporting seat (22), a pair of copper alloy roller (23), first telescopic machanism (24) and first elevation regulation supporting component (25), first last supporting seat (21) and first supporting seat (22) are the bar pedestal that sets up along the direction of controlling the level, just first both ends of going up the supporting seat (21) about respectively sliding fit in frame (1) left and right sides, and can for frame (1) slides from top to bottom, first elevation regulation supporting component (25) install in on frame (1), its height-adjustable, first elevation regulation supporting component (25) are located the below of first supporting seat (22), and with the lower extreme contact of first supporting seat (22) is used for supporting first last supporting seat (21) and first supporting seat (22), the first telescopic mechanism (24) is respectively connected with the first upper supporting seat (21) and the first lower supporting seat (22), which can drive the first upper supporting seat (21) and the first lower supporting seat (22) to move relatively to approach or separate from each other, a pair of copper alloy rollers (23) are respectively horizontally arranged along the left-right direction, and are respectively arranged at the lower end of the first upper supporting seat (21) and the upper end of the first lower supporting seat (22) in a one-to-one correspondence manner, the axes of the copper alloy roller and the copper alloy roller are positioned in the same vertical plane, two ends of the copper alloy roller (23) are respectively arranged at the lower end of the corresponding first upper supporting seat (21) and the upper end of the corresponding first lower supporting seat (22) through bearing assemblies which are rotatably connected with the copper alloy roller, the steel strip passes between a pair of copper alloy rollers (23), and oil stains on the surface of the steel strip are subjected to rough oil removal treatment under the extrusion of the copper alloy rollers and the copper alloy rollers.

3. The composite oil removing device according to claim 2, characterized in that: the first elevation adjusting support assembly (25) comprises a first chassis (251), a first sleeve (252), a first elastic piece (253), a first ejector rod (254), a first adjusting bolt (255), a first flange (256), a first pre-tightening nut (257) and a first adjusting nut (258), the first chassis (251) is fixed at the upper end of a lower frame of the rack (1), the first sleeve (252) is vertically fixed at the upper end of the first chassis (251), the upper end and the lower end of the first sleeve are both open, the first ejector rod (254) vertically penetrates through the first sleeve (252), the lower end of the first ejector rod penetrates through the lower frame of the rack (1) and is in threaded connection with the first adjusting nut (258), a first threaded section is arranged at the upper end of the first ejector rod (254), a through hole vertically penetrating through the first flange (256) is arranged in the middle of the first flange and is sleeved outside the first threaded section through the through hole, the first elastic piece (253) is elastically connected between the first flange (256) and the first bottom plate (251), the first pre-tightening nut (257) is in threaded connection outside the threaded section, and is propped against the upper end of the first flange (256), the screw rod of the first adjusting bolt (255) is downward, and is in threaded connection with a screw hole in the middle of the upper end of the first ejector rod (254), the nut of the first adjusting bolt (255) is in contact with the lower end of the first lower supporting seat (22), the first pre-tightening nut (257) is screwed down or unscrewed under the action of external force, to adjust a compression margin of the first elastic member (253), the first adjusting bolt (255) and the first adjusting nut (258) are tightened or loosened by an external force to adjust a height of a nut of the first adjusting bolt (255), thereby adjusting the elevation height of the first lower supporting seat (22) and the first upper supporting seat (21).

4. The composite oil removing device according to claim 2, characterized in that: first telescopic machanism (24) include two first hydro-cylinders (241), two first hydro-cylinder (241) respectively vertical install in the both ends of first last supporting seat (21) upper end, and the piston rod of the two all passes downwards the both ends of first last supporting seat (21) to respectively through vertical first connecting piece (242) with the both ends of first supporting seat (22) upper end are connected, two first hydro-cylinder (241) are flexible in step, in order to order about first last supporting seat (21) and first supporting seat (22) relative movement are close to or keep away from.

5. The composite oil removing device according to any one of claims 2 to 4, wherein: the second-level oil removing device (3) comprises a second upper supporting seat (31), a second lower supporting seat (32), at least one pair of steel rollers (33), a second telescopic mechanism (34), a second elevation adjusting supporting component (35), an upper steel roller straight retaining device (36) and a lower steel roller straight retaining device (37), wherein the second upper supporting seat (31) and the second lower supporting seat (32) are strip-shaped seats horizontally arranged along the left and right directions, the left and right ends of the second upper supporting seat (31) are respectively slidably mounted on the left and right sides of the rack (1) and can slide up and down relative to the rack (1), the second elevation adjusting supporting component (35) is mounted on the rack (1) and is adjustable in height, the second elevation adjusting supporting component (35) is located below the second lower supporting seat (32) and is in contact with the lower end of the second lower supporting seat (32), for supporting on the second supporting seat (31) and second undersetting seat (32), second telescopic machanism (34) respectively with supporting seat (31) and second undersetting seat (32) are connected on the second, and it can order about supporting seat (31) and second undersetting seat (32) relative movement are close to or keep away from, and at least a pair of steel roller (33) are respectively along controlling the direction level setting, every pair steel roller (33) respectively one-to-one set up in the lower extreme of supporting seat (31) and the upper end of second undersetting seat (32) in the second, and the axis of the two is located same vertical plane, the both ends of steel roller (33) are installed in corresponding through the bearing assembly rather than rotating the connection respectively the lower extreme of supporting seat (31) and the upper end of second undersetting seat (32) on the second, go up the straight retaining device of steel roller (36) and the straight retaining device of lower steel roller (37) correspond respectively install in the second straight retaining device (36) that the second is straight Go up supporting seat (31) and second under bracing seat (32) on to correspond respectively and be located top and below steel rod (33) are connected for extrude respectively corresponding being located top or below steel rod (33) and make it keep straight, the steel band is through every right between copper alloy roller (23) to carry out the finish oil processing to its surface oil stain under the extrusion of the two, the diameter of steel roller (33) is less than the diameter of copper alloy roller (23).

6. The composite oil removing device according to claim 5, wherein: the second elevation adjustment supporting component (35) comprises a second chassis (351), a second sleeve (352), a second elastic part (353), a second ejector rod (354), a second adjustment bolt (355), a second flange (356), a second pre-tightening nut (357) and a second adjustment nut (358), the second chassis (351) is fixed at the upper end of the lower frame of the rack (1), the second sleeve (352) is vertically fixed at the upper end of the second chassis (351), the upper end and the lower end of the second sleeve are both open, the second ejector rod (354) vertically penetrates through the second sleeve (352), the lower end of the second ejector rod penetrates through the lower frame of the rack (1) and is in threaded connection with the second adjustment nut (358), the upper end of the second ejector rod (354) is provided with a second threaded section, the middle of the second flange (356) is provided with a through hole vertically penetrating through the second flange, and is sleeved outside the second threaded section through the through hole, the second elastic member (353) is elastically connected between the second flange (356) and the second bottom plate (351), the second pre-tightening nut (357) is screwed outside the second threaded section, and is propped against the upper end of the second flange (356), the screw rod of the second adjusting bolt (355) is downward, and is in threaded connection with a screw hole in the middle of the upper end of the second top rod (354), the nut of the second adjusting bolt (355) is in contact with the lower end of the second lower supporting seat (32), the second pre-tightening nut (357) is screwed or unscrewed under the action of external force, to adjust a compression margin of the second elastic member (353), the second adjusting bolt (355) and the second adjusting nut (358) are tightened or loosened by an external force to adjust a height of a nut of the second adjusting bolt (355), thereby adjusting the elevation height of the second lower support seat (32) and the second upper support seat (31).

7. The composite oil removing device according to claim 5, wherein: the second telescopic mechanism (34) comprises two second oil cylinders (341), the two second oil cylinders (341) are respectively vertically installed at two ends of the upper end of the second upper supporting seat (31), piston rods of the two second oil cylinders downwards penetrate through two ends of the upper end of the second upper supporting seat (31) and are respectively connected with two ends of the upper end of the second lower supporting seat (32) through vertical second connecting pieces (342), and the two second oil cylinders (341) are synchronously telescopic to drive the second upper supporting seat (31) and the second lower supporting seat (32) to relatively move close to or far away from each other; the lower ends of the two second connecting pieces (342) are respectively provided with a limiting block (343) at the same height, the two second oil cylinders (341) can synchronously contract the piston rods of the two second oil cylinders, and the second upper supporting seat (31) and the second lower supporting seat (32) are relatively moved to be close to the second upper supporting seat (31) and abut against the limiting block (343), so that the minimum oil removing distance between each pair of steel rods (33) is determined.

8. The composite oil removing device according to claim 5, wherein: the number of the upper steel bar flat keeping devices (36) corresponds to that of each steel bar (33) positioned above one by one, each upper steel bar flat keeping device (36) comprises multiple groups of upper bearing assemblies (361) and multiple first cylinders (362) which correspond to one another, the multiple groups of upper bearing assemblies (361) are respectively arranged on the upper portion of each steel bar (33) positioned above and are in rolling contact with the upper portions of the steel bars (33), the multiple first cylinders (362) are respectively vertically arranged at the upper end of the second upper supporting seat (31), the piston rod of each first cylinder (362) downwards penetrates through the second upper supporting seat (31) and is connected with the corresponding upper bearing assembly (361), and the first cylinders (362) are respectively used for driving the corresponding upper bearing assemblies (361) to push the contact portions of the steel bars (33) through the piston rods, thereby adjusting the steel rod (33) to remain straight.

9. The composite oil removing device according to claim 5, wherein: the number of the lower steel rod straight retaining devices (37) corresponds to each steel rod (33) positioned below one by one, each lower steel rod straight retaining device (37) comprises a plurality of groups of lower bearing assemblies (371) and a plurality of second cylinders (372) which correspond to one another, the groups of lower bearing assemblies (371) are respectively arranged on the upper portion of each steel rod (33) positioned below and are in rolling contact with the upper portion of the steel rod (33), the plurality of second cylinders (372) are respectively vertically arranged at the lower end of the second lower support seat (32), a piston rod of each second cylinder (372) downwards penetrates through the second lower support seat (32) and is connected with the corresponding lower bearing assembly (371), and the second cylinders (372) are respectively used for driving the corresponding lower bearing assemblies (371) to push the contact portions of the steel rods (33) through the piston rods, thereby adjusting the steel rod (33) to remain straight.

10. The composite oil removing device according to claim 5, wherein: the purging device (4) comprises a screw rod (41), a driving mechanism (42) and a purging block (43), the screw rod (41) is horizontally arranged at the rear side of the second upper supporting seat (31) along the left-right direction, two ends of the screw rod are respectively arranged at the rear side of the second upper supporting seat (31) through bearing seats in rotating connection with the screw rod, the driving mechanism (42) is in transmission connection with one end of the screw rod (41) and is used for driving the screw rod (41) to rotate around the axis of the screw rod, a cavity is arranged in the purging block (43), a purging port communicated with the cavity is arranged at the lower end of the purging block, the direction of the purging port is downward, a screw hole penetrating through the purging block from left to right is formed in the upper end of the purging block (43) and is screwed outside the screw rod (41) through the screw hole, the front side of the purging block (43) is close to or in contact with the rear side of the second upper supporting seat (31), and an air, and the air inlet is externally connected with an air flow purging device through a pipeline, and the purging block (43) is used for purging the surface of the steel strip passing through the purging block downwards through the purging port.