CN116037679A - Emulsion purging and oil removing device of reversible cold rolling mill - Google Patents

Emulsion purging and oil removing device of reversible cold rolling mill Download PDF

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Publication number
CN116037679A
CN116037679A CN202310056905.XA CN202310056905A CN116037679A CN 116037679 A CN116037679 A CN 116037679A CN 202310056905 A CN202310056905 A CN 202310056905A CN 116037679 A CN116037679 A CN 116037679A
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Prior art keywords
emulsion
purging
rolling mill
face
plate surface
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CN202310056905.XA
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Inventor
高建校
任福平
缑雷雷
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MCC SFRE Heavy Industry Equipment Co Ltd
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MCC SFRE Heavy Industry Equipment Co Ltd
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Priority to CN202310056905.XA priority Critical patent/CN116037679A/en
Publication of CN116037679A publication Critical patent/CN116037679A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269—Cleaning
    • B21B45/0275—Cleaning devices
    • B21B45/0278—Cleaning devices removing liquids
    • B21B45/0284—Cleaning devices removing liquids removing lubricants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

The invention discloses an emulsion purging and degreasing device of a reversible cold rolling mill, which is fixedly connected with a housing of the mill and comprises a lifting baffle and a lower plate surface emulsion spraying beam, wherein the lifting baffle is connected with a lifting hydraulic cylinder fixed on the housing; the invention can effectively prevent the backflow of the emulsion at the inlet and eliminate the emulsion residue at the outlet.

Description

Emulsion purging and oil removing device of reversible cold rolling mill
Technical Field
The invention belongs to the technical field of strip steel cold rolling equipment, and relates to an emulsion purging and degreasing device of a reversible cold rolling mill.
Background
In the strip steel single-frame reversible cold rolling production line, enough emulsion injection is required to be carried out at the inlet of a rolling mill for lubricating and cooling rollers and a plate surface, and sealing and air purging are required to be carried out at the outlet of the rolling mill for ensuring the cleanness of the plate surface. The inlet and outlet of the rolling mill are provided with oil removing rollers and purging devices to prevent the backflow of the emulsion at the inlet from interfering the measurement of the thickness meter at the inlet, and the outlet eliminates emulsion residues at the belt surface to ensure the quality of the belt surface.
A schematic of a single stand six-roll reversing mill train arrangement with four roll de-oiling rolls is shown in fig. 1. When the first pass is threading or the last pass is ending, the oil removing roller opens the roller gap, and the roller gap is closed for oil removing during rolling. When the unit rolls from left to right, emulsion on the left side (inlet) in the rolling mill frame is opened, emulsion on the right side (outlet) is closed, and an oil removing device on the right side (outlet) is purged and opened; when in reversing rolling, the switch is correspondingly changed when the emulsion and the purge are exchanged between the inlet and the outlet.
The existing degreasing roller mechanism is complex, the maintenance cost is high, and the accident rate is high especially in a high-speed rolling mill.
Disclosure of Invention
The invention aims to provide an emulsion purging and degreasing device of a reversible cold rolling mill, which can replace a degreasing roller device, effectively prevent the backflow of inlet emulsion and eliminate the emulsion residue on the surface of an outlet.
The technical scheme includes that the emulsion purging and degreasing device of the reversible cold rolling mill is arranged at an inlet and an outlet of the mill and is fixedly connected with a housing of the mill, the device comprises a lifting baffle and a lower plate surface emulsion purging beam, the lifting baffle is connected with a lifting hydraulic cylinder fixed on the housing, the lower end of the lifting baffle is provided with an upper plate surface emulsion purging beam, an emulsion nozzle is arranged on the upper plate surface emulsion purging beam, the upper plate surface emulsion purging beam is connected with an emulsion interface, an upper plate surface purging beam is arranged outside the upper plate surface emulsion purging beam, the upper plate surface purging beam is connected with an air purging interface, and the upper plate surface purging beam is provided with a purging nozzle;
the utility model discloses a rolling mill comprises a rolling mill, a lower face emulsion injection beam support, an emulsion interface, a lower face emulsion injection beam, a lower face purging beam, an upper face emulsion injection beam, an upper face purging beam, a lower face emulsion injection beam, a rolling mill rolling line and a rolling mill rolling line, wherein the lower face emulsion injection beam supports are arranged at two ends of the lower face emulsion injection beam, the lower face injection beam supports are fixedly connected with the housing, emulsion nozzles and emulsion interfaces are arranged on the outer side of the lower face emulsion injection beam, the lower face purging beam is provided with a purging nozzle and an air purging interface, the emulsion nozzles of the lower face emulsion injection beam and the emulsion nozzles of the upper face emulsion injection beam, the purging nozzles of the upper face purging beam and the purging nozzles of the lower face purging beam are symmetrically distributed by taking the straight line of the rolling mill as a symmetrical axis, and the spraying direction of the emulsion nozzles and the purging direction of the purging nozzles face the rolling mill.
The present invention is also characterized in that,
the elevator is characterized by further comprising two guide seats which are fixed on the housing and are positioned on two sides of the lifting baffle, a groove is formed in one side, close to the lifting baffle, of each guide seat, the openings of the grooves of the two guide seats are opposite, the end faces of two sides of the lifting baffle are correspondingly positioned in the grooves of the two guide seats, and the lifting baffle moves up and down along the length direction of the grooves of the guide seats.
The lifting hydraulic cylinders are arranged in two, and the two lifting hydraulic cylinders are respectively positioned at two sides of the lifting baffle plate.
The upper ends of the two sides of the lifting baffle are provided with positioning screws, and the positioning screws are limited with the stop blocks on the guide seats.
The emulsion nozzles and the purging nozzles are all arranged in a plurality, and the emulsion nozzles and the purging nozzles are arranged at equal intervals.
The blowing nozzle of the upper plate surface blowing beam is a flat type powerful nozzle with large blowing amount, and the model is BJ804.
The blowing nozzle of the lower plate surface blowing beam is a flat nozzle, and the model is BJ973.
The lifting baffle lower part outside is provided with the safety cover, and the safety cover bottom is uncovered, and the safety cover covers upper plate face emulsion injection beam and upper plate face purging beam, and upper plate face purging beam is fixed in the safety cover inboard.
The two ends of the lower plate surface purging beam are respectively fixed on the two lower plate surface spraying beam supports.
The beneficial effects of the invention are as follows:
the emulsion purging and degreasing device of the reversible cold rolling mill has the advantages of simple structure, shortened unit length and improved yield; the emulsion purging and degreasing device is arranged at the inlet and outlet of the rolling mill, and a degreasing roller is not required to be arranged, so that the effects of preventing the backflow of the emulsion at the inlet and removing the emulsion residue at the outlet are realized, the accident rate is reduced, the maintenance cost is reduced, and meanwhile, the high-speed stable rolling is possible.
Drawings
FIG. 1 is a schematic diagram of a unit arrangement with inlet and outlet de-oiling rollers;
FIG. 2 is a schematic front view of the emulsion purging and degreasing device of the reversible cold rolling mill;
FIG. 3 is a schematic top view of the emulsion purging and degreasing device of the reversible cold rolling mill;
FIG. 4 is a schematic diagram of a unit layout of a reversible cold rolling mill emulsion purging and degreasing device provided with a rolling mill inlet and outlet;
FIG. 5 is a schematic side view inlet operation diagram of the emulsion purging and degreasing device of the reversible cold rolling mill of the present invention;
FIG. 6 is a schematic side view outlet operation diagram of the emulsion blowing and degreasing device of the reversible cold rolling mill of the present invention.
In the figure, a baffle plate is lifted, an upper plate surface emulsion spray beam, a protective cover, an upper plate surface blowing beam, a steel belt, a lower plate surface emulsion spray beam, a lower plate surface blowing beam, a positioning screw, a lifting hydraulic cylinder, a guide seat, a lower plate surface spray beam support, a spray nozzle, an emulsion interface, an air blowing interface and a blowing nozzle are respectively arranged, wherein the upper plate surface emulsion spray beam, the protective cover and the upper plate surface blowing beam are respectively arranged, the steel belt is arranged, the lower plate surface emulsion spray beam, the lower plate surface blowing beam is arranged, the positioning screw is arranged, the lifting hydraulic cylinder is arranged, the guide seat is arranged, the spray nozzle is arranged, and the spray nozzle is arranged.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention discloses an emulsion purging and degreasing device of a reversible cold rolling mill, which is fixedly connected with a housing of the mill, and comprises a lifting baffle plate 1, a lower plate surface emulsion spraying beam 6, two guide seats 10 which are fixed on the housing and are positioned at two sides of the lifting baffle plate 1, wherein one side of each guide seat 10, which is close to the lifting baffle plate 1, is provided with grooves, the openings of the grooves of the two guide seats 10 are opposite, the end surfaces of the two sides of the lifting baffle plate 1 are correspondingly positioned in the grooves of the two guide seats 10, the lifting baffle plate 1 moves up and down along the length direction of the grooves of the guide seats 10, the two sides of the lifting baffle plate 1 are respectively connected with a lifting hydraulic cylinder 9 which is fixed on the housing, the upper ends of the two sides of the lifting baffle plate 1 are respectively provided with a positioning screw 8, the positioning screw 8 is matched with a stop block on the guide seat 10 for limiting, the lower lowest position of the upper lifting baffle plate can be precisely positioned through adjusting the positioning screw 8, and the end surface of the bottom end surface of the lifting baffle plate 1 is lined with a nylon plate.
The lifting baffle 1 lower extreme is provided with face emulsion ejection beam 2, go up face emulsion ejection beam 2 and go up equidistant a plurality of emulsion nozzles 12 that are provided with, go up face emulsion ejection beam 2 and be connected with emulsion interface 13, go up face emulsion ejection beam 2 outside and be provided with face and sweep roof beam 4, go up face and sweep roof beam 4 and be connected with air and sweep interface 14, go up the equidistant a plurality of blowing nozzles 15 that are provided with on the face and sweep roof beam 4, the blowing nozzle 15 of face and sweep roof beam 4 is for adorning the powerful nozzle of flat big volume of blowing, the model is BJ804, lifting baffle 1 lower part outside is provided with safety cover 3, the safety cover 3 bottom is uncovered, and safety cover 3 is covered face emulsion ejection beam 2 and face and sweep roof beam 4, go up face and sweep roof beam 4 and fix the inboard of safety cover 3.
The lower face emulsion spray beam 6 is fixedly connected with the housing through a lower face spray beam support 11 positioned at two ends, the lower face emulsion spray beam 6 is also provided with an emulsion interface 13 and a plurality of emulsion nozzles 12 distributed at equal intervals, a lower face blowing beam 7 is arranged on the outer side of the lower face emulsion spray beam 6, two ends of the lower face blowing beam 7 are also fixed on the lower face spray beam support 11, the lower face blowing beam 7 is also provided with an air blowing interface and a plurality of blowing nozzles 15 distributed at equal intervals, the blowing nozzles 15 of the lower face blowing beam are flat nozzles, the model is BJ973, the emulsion nozzles 12 of the lower face emulsion spray beam 6 and the emulsion nozzles 12 of the upper face emulsion spray beam 2, the blowing nozzles 15 of the upper face blowing beam 4 and the blowing nozzles 15 of the lower face blowing beam 7 are symmetrically distributed by taking the straight line of a rolling mill as a symmetrical axis, and the blowing directions of the emulsion nozzles 12 and the blowing nozzles 15 face the direction of the blowing nozzles 15 all towards the direction in the rolling mill.
The working process of the emulsion purging and degreasing device of the reversible cold rolling mill is specifically as follows:
as shown in FIG. 4, the emulsion purging and degreasing device of the reversible cold rolling mill is arranged at the inlet and outlet of the mill.
The plate belt is in a tension-free state when the first pass is in belt threading or the last pass is in tail winding, the lifting hydraulic cylinder 9 extends to the maximum stroke, the lifting baffle plate 1 is completely lifted, the belt can smoothly pass through, and scratch is avoided.
During rolling, as shown in fig. 4, all emulsion nozzles 12 on the inlet side of the rolling mill spray a large amount of emulsion, and the emulsion nozzles 12 spray the emulsion inwards although the speed of the steel strip is inwards, a large amount of emulsion still exists on the upper surface of the steel strip 5 on the inlet side of the rolling mill due to the blocking of the rollers, and a certain pressure flows outwards.
On the inlet side of the rolling mill, as shown in fig. 5, the lifting baffle plate 1 falls down, and a parallel flat gap is formed between the end face of the bottom end of the lifting baffle plate 1 and the steel strip 5. According to a gap flow formula between parallel plates:
Figure BDA0004060670270000051
description: q-emulsion flow out, m 3 ·s -1
Delta p-difference in emulsion pressure inside and outside the baffle, pa
Delta-gap amount, m; delta < < L, delta < < B
Mu-emulsion dynamic viscosity, pa.s
U-strip speed, m.s -1
L-width of lower end face of baffle, m
B width of strip steel, m
As can be seen from the above formula: the gap amount is reduced, the speed of the steel belt 5 is increased, the emulsion pressure in the lifting baffle plate 1 is reduced, and the outflow flow of emulsion is reduced. According to theory and field experience, the proper gap amount is adjusted through the positioning screw 8, different emulsion injection flow rates are set according to different speeds of the steel belt 5, so that the emulsion pressure in the lifting baffle plate 1 is adjusted, and the reverse injection action of the upper plate surface emulsion injection beam 2 can effectively reduce the emulsion pressure in the lifting baffle plate 1, so that the emulsion outflow flow rate is smaller than 0, and the backflow of the emulsion at the inlet is prevented.
During rolling, as shown in fig. 4, the emulsion nozzle 12 on the outlet side of the rolling mill does not spray emulsion, and only a small amount of emulsion splashed on the upper and lower surfaces of the steel strip 5 remains due to the separation of the splashed plates by the blocking of the rolls.
The outlet side of the rolling mill is shown in fig. 6, the lifting baffle plate 1 at the outlet is lifted by 50mm to stop, so that effective purging space and distance are ensured, the purging of the upper plate surface purging beam 4 and the lower plate surface purging beam 7 at the outlet is opened, the flat type large-blowing-force nozzle can form an upper air wall and a lower air wall, residual emulsion on the plate surface is blown dry, and the effect that the emulsion residue on the plate surface is eliminated at the outlet is realized.

Claims (9)

1. The emulsion purging and degreasing device for the reversible cold rolling mill is arranged at an inlet and an outlet of the rolling mill and is fixedly connected with a housing of the rolling mill, and is characterized by comprising a lifting baffle (1) and a lower plate surface emulsion purging beam (6), wherein the lifting baffle (1) is connected with a lifting hydraulic cylinder (9) fixed on the housing, the lower end of the lifting baffle (1) is provided with an upper plate surface emulsion purging beam (2), the upper plate surface emulsion purging beam (2) is provided with an emulsion nozzle (12), the upper plate surface emulsion purging beam (2) is connected with an emulsion interface (13), an upper plate surface purging beam (4) is arranged outside the upper plate surface emulsion spraying beam (2), the upper plate surface purging beam (4) is connected with an air purging interface (14), and the upper plate surface purging beam (4) is provided with a purging nozzle (15);
the utility model discloses a face emulsion spraying beam, including face emulsion spraying beam (6) and face emulsion spraying beam, face emulsion spraying beam (6) and face emulsion spraying beam support (11) are all provided with down, face spraying beam support (11) and housing fixed connection down, face emulsion spraying beam (6) are also provided with emulsion nozzle (12), emulsion interface down, face emulsion spraying beam (6) outside is provided with down face and sweeps roof beam (7), face purging roof beam (7) are provided with and sweep nozzle (15), air sweeps interface (14), emulsion nozzle (12) of face emulsion spraying beam (6) and emulsion nozzle (12) of face emulsion spraying beam (2), sweep nozzle (15) of face purging beam (4) and face purging nozzle (15) of face purging roof beam (7) use the rolling line place straight line of rolling mill to be symmetry axis symmetric distribution, just the direction of spraying direction of emulsion nozzle (12), the direction of sweeping nozzle (15) all towards the rolling mill direction in the machine.
2. The emulsion purging and degreasing device for the reversible cold rolling mill according to claim 1, further comprising two guide seats (10) which are fixed on the housing and are positioned on two sides of the lifting baffle (1) plate, wherein grooves are formed in one side, close to the lifting baffle (1), of each guide seat (10), the openings of the grooves of the two guide seats (10) are opposite, two side end faces of the lifting baffle (1) are correspondingly positioned in the grooves of the two guide seats (10), and the lifting baffle (1) moves up and down along the length direction of the grooves of the guide seats (10).
3. The emulsion purging and degreasing device for the reversible cold rolling mill according to claim 1, wherein two lifting hydraulic cylinders (9) are arranged, and the two lifting hydraulic cylinders (9) are respectively arranged at two sides of the lifting baffle plate (1).
4. The emulsion purging and degreasing device for the reversible cold rolling mill according to claim 2, wherein positioning screws (8) are arranged at the upper ends of two sides of the lifting baffle plate (1), and the positioning screws (8) are limited by the stop blocks on the guide seat (10).
5. The emulsion purging and degreasing device for the reversible cold rolling mill according to claim 1, wherein a plurality of emulsion nozzles (12) and purging nozzles (15) are arranged, and a plurality of emulsion nozzles (12) and a plurality of purging nozzles (15) are equidistantly arranged.
6. The emulsion purging and degreasing device for the reversible cold rolling mill according to claim 1, wherein the purging nozzle (15) of the upper plate surface purging beam (4) is a flat type high-purging-amount powerful nozzle, and the model is BJ804.
7. The emulsion purging and degreasing device for the reversible cold rolling mill according to claim 1, wherein the purging nozzle (15) of the lower plate surface purging beam is a flat nozzle, and the model is BJ973.
8. The emulsion purging and degreasing device for the reversible cold rolling mill according to claim 1, wherein a protective cover (3) is arranged on the outer side of the lower portion of the lifting baffle plate (1), the bottom of the protective cover (3) is open, the protective cover (3) covers the upper plate surface emulsion spraying beam (2) and the upper plate surface purging beam (4), and the upper plate surface purging beam (4) is fixed on the inner side of the protective cover (3).
9. The emulsion purging and degreasing device for the reversible cold rolling mill according to claim 1, wherein two ends of the lower plate surface purging beam (7) are respectively fixed on two lower plate surface spraying beam supports (11).
CN202310056905.XA 2023-01-18 2023-01-18 Emulsion purging and oil removing device of reversible cold rolling mill Pending CN116037679A (en)

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Application Number Priority Date Filing Date Title
CN202310056905.XA CN116037679A (en) 2023-01-18 2023-01-18 Emulsion purging and oil removing device of reversible cold rolling mill

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Application Number Priority Date Filing Date Title
CN202310056905.XA CN116037679A (en) 2023-01-18 2023-01-18 Emulsion purging and oil removing device of reversible cold rolling mill

Publications (1)

Publication Number Publication Date
CN116037679A true CN116037679A (en) 2023-05-02

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