CN108526911B

CN108526911B - Combined type oxide skin removing equipment and removing method

Info

Publication number: CN108526911B
Application number: CN201810627100.5A
Authority: CN
Inventors: 夏征; 王爽; 陈国利
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-19
Filing date: 2018-06-19
Publication date: 2021-12-10
Anticipated expiration: 2038-06-19
Also published as: CN108526911A

Abstract

The invention provides a combined type descaling device and a descaling method, which comprises an uncoiler, a stretch bending descaler, a powered tensioner and a winder, wherein the uncoiler is used for uncoiling coiled metal plates and conveying the coiled metal plates to the stretch bending descaler, the stretch bending descaler is arranged on one side of the uncoiler and used for crushing thicker scale cinder in the stretch bending process, the powered tensioner is arranged on one side of the stretch bending descaler, and the winder is arranged on one side of the powered tensioner, and the combined type descaling device is characterized in that: the stretch bending scale breaker is characterized by further comprising a constraint grinding machine and electrolysis equipment, wherein abrasive constraint grinding equipment is arranged between the two power-driven tension machines on one side of the stretch bending scale breaker, and the electrolysis equipment is arranged between the two power-driven tension machines between the constraint grinding machine and the winding machine. The method has the advantages of economy, high efficiency, environmental protection and complete replacement of chemical pickling for removing the oxide skin.

Description

Combined type oxide skin removing equipment and removing method

Technical Field

The invention belongs to the field of metal oxide scale removing equipment, and particularly relates to combined type oxide scale removing equipment and a removing method.

Background

The hot rolled steel is carried out at high temperature, so that the chemical reaction between the steel and oxygen in the air can be avoided, an oxide skin with a certain thickness can be formed on the surface, the oxide skin after final rolling generally has a three-layer structure, the ferrous oxide accounts for about 40-95% of the total thickness of the oxide skin from inside to outside of a steel matrix, and the steel matrix is a loose and porous fine crystalline structure; the intermediate layer is made of ferroferric oxide which accounts for about 4-14% of the total thickness and is a magnetic structure of a compact, non-porous and crack glass fracture; the outermost layer is ferric oxide which accounts for about 1 to 2 percent of the total thickness and is in a crystal structure; the total thickness of the oxide skin is generally 7.5um to 15 um. Because the generation and growth process of the oxide skin is influenced by conditions such as temperature, time and the like, the ferrous oxide can be gradually converted into the ferroferric oxide in the natural cooling process after the steel strip is finally rolled and coiled, and the proportion of the three-layer structure of the oxide skin is finally changed. From the above scale formation process, it is essentially an oxidation process of iron; from the viewpoint of scale removal and properties, ferrous oxide is easily removed, and mainly iron, the higher oxide, ferroferric oxide, is difficult to remove, and various methods have been adopted to treat the scale produced during the production process.

The most common method for treating the oxide scale at present is an acid pickling method, such as an acid pickling method, for removing oxides caused by hot rolling, a large amount of waste acid is discharged in the process, serious pollution is caused to the environment, and damage is caused to workers and equipment in the operation process.

In addition to the conventional pickling method, there are a conventional electrolytic method, a water-blasting method, a conventional brushing method (mechanical method), and the like. Other methods, such as laser, plasma, etc., which are more non-earth-atmosphere methods, while they can be eliminated, are either more costly or less efficient and impractical; each of the conventional electrolytic method, water sand blasting method and conventional steel wire brushing method (mechanical method) has more or less some problems, so that the metallurgical industry, so far, has treated oxide scale, or has adopted an acid washing method which causes extreme pollution to the environment and extremely harsh working environment.

The water blasting method, such as the invention patent with the publication number of CN200940126014, can remove the oxide, but the mechanism determines that the steel surface can generate work hardening, and the pits are all pits, and the oxide in the pits can not be removed; secondly, the problems of damage, high cost and low efficiency of original parts such as a nozzle and a water pump in the treatment equipment are direct influence factors of popularization and use.

The traditional electrolysis method, such as CN1267750A, has the disadvantages of large electrode loss and large electrolyte flow, and more outstanding overlarge electrode distance, so that the power consumption is very large, the utilization rate of electricity is very low, most of the traditional electrolysis method heats the electrolyte, and the traditional electrolysis method cannot be solved in the industry at present, so that the method has no practical feasibility at all. If the distance between the electrodes is shortened, short-circuiting occurs and electrolysis cannot be performed.

Particularly, the traditional brushing method has the problems that oxides in tiny pits cannot be removed, the production efficiency is low and the like, so that the industrial batch production is difficult to realize, the bristles and the steel piece to be treated are ground in a line contact manner, the treatment effect is good or bad, the number of brush rolls is mainly determined, the number of the brush rolls is increased, and the increase of the number of the brush rolls is directly related to the size of transmission power, so that the treatment cost and the treatment efficiency are influenced; the method can not solve the problem of clearance compensation between the bristles and the steel part after the bristles are abraded with the steel part in the working process, so that the method cannot be popularized and applied; in addition, if many traditional brushing methods are used for treating oxides in fine pits, the adopted method is to increase the strength of hard grinding, so that useful steel at the convex part is also abraded, and the abrasion probability of the brush roller is greatly improved, thereby causing overlarge loss.

Disclosure of Invention

The invention aims to provide an economical, efficient and environment-friendly descaling device and a descaling method for solving the problem that the traditional descaling method needs pickling, and the descaling device and the descaling method are particularly suitable for removing oxides on steel plates.

The technical scheme of the invention is as follows: a combined type descaling device comprises an uncoiler, a stretch bending descaling machine, a powered tensioner and a coiling machine, wherein the uncoiler is used for uncoiling coiled metal plates and conveying the coiled metal plates to the stretch bending descaling machine, the stretch bending descaling machine is arranged on one side of the uncoiler and is used for crushing thicker scale in the stretch bending process, a plurality of powered tensioners are arranged on one side of the stretch bending descaling machine, the powered tensioner comprises a first tension roller, a second tension roller and a power motor, the second tension roller is arranged on one horizontal side of the first tension roller and is driven by the power motor, the coiling machine is arranged on one side of the powered tensioner, the combined type descaling device further comprises an abrasive material restraining grinding device and an electrolysis device, and an abrasive material restraining grinding device is arranged between the two powered tensioner on one side of the stretch bending descaling machine, an electrolysis device is arranged between the two belt power tension machines between the abrasive material constraint grinding device and the winding machine;

further, abrasive material restraint grinding equipment includes clean room, restraint milling machine, be equipped with two restraint milling machines in the clean room, one side top of clean room is equipped with a restraint milling machine, the opposite side below of clean room is equipped with another restraint milling machine, two the 45 jiaos of image setting of restraint milling machine, sheet metal turns to the restraint milling machine that enters the below after getting into the restraint milling machine of top earlier after the clean room, the restraint milling machine includes that main frame, first auxiliary frame, second auxiliary frame, first rubber roll, second are polished, rubber roll, backing roll, feeding storehouse, sand carrying roller, sand supply mechanism, the upper left side fixedly connected with one main frame of clean room, the first auxiliary frame of one side fixedly connected with of main frame, the opposite side fixedly connected with second auxiliary frame of main frame, the upper part of the first auxiliary frame is movably connected with a first polishing rubber roll, the lower part of the first auxiliary frame is movably connected with a second polishing rubber roll, the first polishing rubber roll and the second polishing rubber roll are both movably connected with the first auxiliary frame through a first air cylinder and driven so as to adjust the gap between the first polishing rubber roll and the gap between the second polishing rubber roll and the surface of the metal plate, one side of the lower part of the second auxiliary frame is fixedly connected with a supporting roll, the upper part of the second auxiliary frame is movably connected with a feeding bin, the bottom of the feeding bin is an inclined plane, the inclined plane at the bottom extends to the outside of the feeding bin so as to convey abrasive materials, one side of the feeding bin is fixedly connected with a sand carrying roller, an opening gap is arranged between the inclined plane at the bottom of the feeding bin and the sand carrying roller, one side of the feeding bin is provided with a slide bar, the bottom of the other side is provided with a second air cylinder, the slide bar is matched with the air cylinder so as to adjust the feeding bin to move up and down, the feeding bin is used for adjusting the sand feeding angle, an arc-shaped inserting plate is movably arranged on one side of a sand carrying roller in the feeding bin, the sand feeding amount can be adjusted by rotating the arc-shaped inserting plate, a sand supply mechanism is arranged at the top of the feeding bin, and an abrasive material recovery pool is arranged below each constraint grinding machine and used for recovering abrasive materials brought down after the metal plate rotates; because the grinding material is used as the grinding material, the grinding material is free and not solidified, after the grinding material enters a wedge-shaped area between the first grinding rubber roller and the metal plate and between the first grinding rubber roller and the supporting roller, because the elastic modulus of the first grinding rubber roller is much smaller than that of the metal plate, the free grinding material with certain hardness and edge angles can be pressed into one part of the first grinding rubber roller under the accurate control pressure of the air cylinder or the electric servo cylinder to form a constraint force, and the free grinding material is higher than the leaked sand on the surface of the first grinding rubber roller under the driving of the first grinding rubber roller rotating at a high speed to precisely grind the surface of the metal plate; the grinding materials are continuously updated during grinding, the grinding efficiency is always high-efficient, and the phenomena of grinding material passivation and high grinding temperature are avoided as in a fixed hard grinding; because the grinding material returns to the grinding material recovery tank after leaving the grinding area, the heat dissipation is facilitated, and the grinding material enters the grinding area in a free and irregular manner and is not easy to passivate.

Further, the grinding material is river sand or carborundum or a mixture of the river sand and the carborundum;

furthermore, the electrolysis equipment comprises a washing chamber and an electrolysis chamber, wherein the washing chamber and the electrolysis chamber are sequentially arranged in the electrolysis equipment from the entering direction to the exiting direction of the metal plate, a plurality of electrolysis modules are arranged in the electrolysis equipment, form an electrolysis production line and are used for electrolyzing free grinding materials to restrain oxide skin in pits on the surface of the ground metal plate, a plurality of brush rolls are arranged on the other side of the electrolysis production line and are used for scrubbing reaction products attached to the surface of the metal plate after passing through the electrolysis modules, a waste water collecting pool is arranged at the bottom in the electrolysis equipment and is connected with an external waste water recovery filtering pool, and the recovered and filtered water is delivered back to the washing chamber through a water pump;

furthermore, the electrolysis module comprises an anode electrolysis bath and a cathode electrolysis bath, wherein openings are arranged at two ends of the anode electrolysis bath and the cathode electrolysis bath for the entry and the output of metal plates, electrolyte is arranged in the anode electrolytic cell and the cathode electrolytic cell, the anode electrolytic cell and the cathode electrolytic cell are horizontally arranged at intervals, the anode electrolytic tank comprises an upper anode electrode and a lower anode electrode, the upper anode electrode and the lower anode electrode are arranged in a vertically symmetrical manner, a gap for a metal plate to pass through and complete electrolysis is reserved in the middle, the cathode electrolytic tank comprises an upper cathode electrode and a lower cathode electrode, the upper cathode electrode and the lower cathode electrode are arranged in a vertically symmetrical manner, a gap for a metal plate to pass through and complete electrolysis is reserved in the middle, electrolyte nozzles are arranged on one sides of the upper anode electrode, the lower anode electrode, the upper cathode electrode and the lower cathode electrode;

furthermore, the upper anode electrode and the upper cathode electrode are plate-type electrodes with insulating bristles arranged below the upper anode electrode and the upper cathode electrode, and the lower anode electrode and the lower cathode electrode are plate-type electrodes with insulating bristles arranged above the lower anode electrode and the lower cathode electrode;

furthermore, the upper anode electrode, the lower anode electrode, the upper cathode electrode and the lower cathode electrode are all roller electrodes coated with insulating, water-permeable and wear-resistant materials;

a removing method of a combined type descaling device comprises the following steps: the method comprises the following steps of physical scale breaking, restraint grinding and electrolysis:

physical scale breaking: the metal plate is uncoiled by an uncoiler and then is conveyed to a stretch bending scale breaker for physical breaking;

constraint grinding: after being bent and crushed, the surface of the metal plate is conveyed to a second tension roller with a power tensioner and then conveyed to a first tension roller, the metal plate enters a constraint grinding machine after coming out of the first tension roller for flexible grinding, and enters the power tensioner at the other side of the constraint grinding machine after coming out of the constraint grinding machine to finish constraint grinding; in the restraint grinding machine, after a sand supply mechanism automatically conveys grinding materials to a feeding bin, an arc-shaped inserting plate is adjusted to rotate to adjust the sand feeding amount, then the vertical position of the feeding bin is adjusted through an air cylinder to adjust the sand feeding angle, and the positions between a first grinding roller and a supporting roller and between a second grinding roller and the supporting roller are adjusted through adjusting air cylinders on the first grinding roller and the second grinding roller, so that the friction force between the grinding materials and metal plates is finally adjusted, flexible friction is realized, unnecessary abrasion is reduced, the metal plates finish front grinding on a first restraint grinding machine in a dust removal chamber, and reverse grinding on a second restraint grinding machine is realized;

electrolysis: after the metal plate is subjected to constraint grinding, the metal plate passes through a tension machine with power and then enters into an electrolysis device, in an electrolysis module, the electrodes are plate-type electrodes, the lower parts of an upper anode electrode and an upper cathode electrode are provided with the plate-type electrodes with insulating bristles, the upper parts of a lower anode electrode and a lower cathode electrode are also provided with the plate-type electrodes with the insulating bristles, the metal plate moves through the surfaces of the upper anode electrode, the lower anode electrode or the upper cathode electrode and the lower cathode electrode to generate an electrolysis reaction, the front and the back of the metal plate are continuously and flexibly scrubbed by the insulating bristles while the surfaces to be reacted are continuously removed to enable the surface to be reacted to continuously leak so as to accelerate the electrolysis reaction, and gaps between the metal plate and the upper anode electrode or the lower anode electrode or between the metal plate and the upper cathode electrode and the lower cathode electrode are not empty but are replaced by the insulating bristles, so that the metal plate is insulated, and the gaps between the upper anode electrode and the lower anode electrode are also reduced, And the distance between the upper cathode electrode and the lower cathode electrode is that the metal plate enters the next powered tension roller after passing through the electrolysis equipment and then enters a coiling machine for coiling and storage.

The invention has the advantages and positive effects that: by adopting the technical scheme, flexible friction is realized in the constraint grinding machine, and unnecessary abrasion is reduced; the electrode spacing is small, the power consumption is small, and the utilization rate of electricity is high in the electrolysis process; waste sand and waste water can be recycled in the polishing and electrolysis processes, and green and environment-friendly effects are realized.

Drawings

FIG. 1 is a schematic view of the overall mechanism of the present invention;

FIG. 2 is a schematic structural view of the restraint grinding machine of the present invention;

FIG. 3 is a schematic structural view of an electrolysis module of the present invention;

FIG. 4 is an electrolytic schematic of the present invention.

In the figure:

an uncoiler 1, a stretch bending scale breaker 2, a powered tensioner 3, a first tension roller 31, a second tension roller 32, a coiler 4, a metal plate 5, an abrasive material restraining and grinding device 6, a dust chamber 61, a restraining and grinding machine 62, a main frame 621, a first auxiliary frame 622, a first air cylinder 622a, a second auxiliary frame 623, a first grinding rubber roller 624, a second grinding rubber roller 625, a support roller 626, a feeding bin 627, a bottom 627a, a sliding bar 627b, a second air cylinder 627c, a sanding roller 628, an arc-shaped inserting plate 628a, a sand supply mechanism 629, an abrasive material recovery tank 63, an electrolysis device 7, a water washing chamber 71, an electrolysis chamber 72, an electrolysis module 721, an anode electrolysis tank 721a, an upper anode electrode 721aa, a lower anode electrode 721ab, a cathode electrolysis tank 721b, an upper cathode electrode 721ba, a lower cathode electrode 721, an electrolyte nozzle 721c, insulated bristles 721d, electrolyte 721e, brush rollers 721e, a, A waste water collecting tank 73, a waste water recycling and filtering tank 74 and a water pump 75.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-4, the composite descaling device of the invention comprises an uncoiler 1, a stretch bending descaler 2, a powered tensioner 3 and a winder 4, wherein the uncoiler 1 is used for uncoiling a coiled metal plate 5 and conveying the uncoiled metal plate to the stretch bending descaler 2, the stretch bending descaler 2 is arranged on one side of the uncoiler 1, the stretch bending descaler 2 is used for crushing a thicker scale in the stretch bending process, the powered tensioner 3 is arranged on one side of the stretch bending descaler 2, the powered tensioner 3 comprises a first tension roller 31, a second tension roller 32 and a powered motor (not shown), the second tension roller 31 is arranged on one horizontal side of the first tension roller 31, the first tension roller 31 and the second tension roller 32 are driven by the powered motor, the winder 4 is arranged on one side of the powered tensioner 3, the composite descaling device further comprises an abrasive material restraining device 6, a grinding device, The grinding device is characterized by comprising an electrolysis device 7, wherein an abrasive material constraint grinding device 6 is arranged between two dynamic tension machines 3 on one side of the stretch bending scale breaker 2, and the electrolysis device 7 is arranged between the abrasive material constraint grinding device 6 and the two dynamic tension machines 3 between the rolling machine 4;

further, abrasive material restraint grinding equipment 6 includes clean room 61, restraint milling machine 62, abrasive material recovery pond 63, be equipped with two restraint milling machines 62 in the clean room 61, one side top of clean room 61 is equipped with a restraint milling machine 62, the opposite side below of clean room 61 is equipped with another restraint milling machine 62, two restraint milling machine 62 is 45 jiaos of mirror image setting, 5 materials of metal sheet get into clean room 61 after earlier enter into the restraint milling machine 62 of top turn to and enter into the restraint milling machine 62 of below, restraint milling machine 62 includes main frame 621, first auxiliary frame 622, second auxiliary frame 623, first rubber roll 624, second rubber roll 625 of polishing, backing roll 626, feeding bin 627, sand carrying roller 628, sand supply mechanism 629, the upper left side fixedly connected with main frame 621 of clean room 61, one side fixedly connected with first auxiliary frame 622 of main frame, a second auxiliary frame 623 is fixedly connected to the other side of the main frame 621, a first polishing rubber roller 624 is movably connected to the upper portion of the first auxiliary frame 622, a second polishing rubber roller 625 is movably connected to the lower portion of the first auxiliary frame 622, the first polishing rubber roller 624 and the second polishing rubber roller 625 are both movably connected and driven by a first air cylinder 622a and the first auxiliary frame 622 for adjusting the gap between the first polishing rubber roller 624 and the second polishing rubber roller 625 and the surface of the metal plate 5, a support roller 626 is fixedly connected to one side of the lower portion of the second auxiliary frame 623, a feeding bin 627 is movably connected to the upper portion of the second auxiliary frame 623, the bottom 627a of the feeding bin 627 is an inclined surface, the inclined surface of the bottom 627a extends to the outside of the feeding bin 627 for conveying abrasive materials, a sanding roller 628 is fixedly connected to one side of the feeding bin 627, an opening gap is provided between the inclined surface of the bottom 627a of the feeding bin 627 and the sanding roller 628, a sliding bar 627b is arranged at one side of the feeding bin 627, a second air cylinder 627c is arranged at the bottom of the other side of the feeding bin 627, the sliding bar 627b is matched with the air cylinder 627c to adjust the up-and-down movement of the feeding bin 627 so as to adjust a sand feeding angle, an arc-shaped inserting plate 628a is movably arranged at one side of a sand carrying roller 628 inside the feeding bin 627, the sand feeding amount can be adjusted by rotating the arc-shaped inserting plate 628a, a sand supplying mechanism 629 is arranged at the top of the feeding bin 627, and an abrasive material recovery tank 63 is arranged below each constraint grinding machine 62 so as to recover abrasive materials brought by the metal plate 5 after rotation; because the abrasive is used as the abrasive, which is free and not fixed, after the abrasive enters the wedge-shaped area between the first sanding rubber roll 624 and the metal plate 5 and the supporting roll 626, because the elastic modulus of the first sanding rubber roll 624 is much smaller than that of the metal plate 5, under the accurate control pressure of the cylinder or the electric servo cylinder, the free abrasive with certain hardness and edge angle is pressed into a part of the first sanding rubber roll 624 to form a constraint force, and under the driving of the first sanding rubber roll 624 rotating at high speed, the sand higher than the sand leaked from the surface of the first sanding rubber roll 624 is used for accurately grinding the surface of the metal plate 5; the grinding materials are continuously updated during grinding, the grinding efficiency is always high-efficient, and the phenomena of grinding material passivation and high grinding temperature are avoided as in a fixed hard grinding; the grinding materials return to the grinding material recovery tank 63 after leaving the grinding area, so that heat dissipation is facilitated, and the grinding materials enter the grinding area in a free and irregular manner and are not easy to passivate;

further, the electrolysis device 7 comprises a washing chamber 71 and an electrolysis chamber 72, the washing chamber 71 and the electrolysis chamber 72 are sequentially arranged in the electrolysis device 7 from the entering direction to the exiting direction of the metal plate 5, a plurality of electrolysis modules 721 are arranged in the electrolysis chamber, an electrolysis flow line is formed by the electrolysis modules 721 and is used for electrolyzing free abrasives to restrain oxide skin in pits on the surface of the ground metal plate 5, a plurality of brush rollers 722 are arranged on the other side of the electrolysis flow line and are used for brushing reaction products attached to the surface of the metal plate 5 after passing through the electrolysis modules 721, a wastewater collection tank 73 is arranged at the bottom in the electrolysis device 7 and is connected with an external wastewater recovery filtering tank 74, and the recovered and filtered water is conveyed back to the washing chamber 71 through a water pump 75;

further, the electrolytic module 721 includes an anode electrolytic cell 721a and a cathode electrolytic cell 721b, both ends of the anode electrolytic cell 721a and the cathode electrolytic cell 721b are provided with openings for the metal plate 5 to enter and output, the anode electrolytic cell 721a and the cathode electrolytic cell 721b are provided with an electrolyte 721e therein, the anode electrolytic cell 721a and the cathode electrolytic cell 721b are horizontally arranged at intervals, the anode electrolytic cell 721a includes an upper anode electrode 721aa and a lower anode electrode 721ab, the upper anode electrode 721aa and the lower anode electrode 721ab are vertically arranged symmetrically, a gap for the metal plate 5 to pass through and complete the electrolysis is left in the middle, the cathode electrolytic cell 721b includes an upper cathode electrode 721ba and a lower cathode electrode 721bb, the upper cathode electrode 721ba and the lower cathode electrode 721bb are vertically arranged symmetrically, a gap for the metal plate 5 to pass through and complete the electrolysis is left in the middle, electrolyte nozzles 721c are arranged on one sides of the upper anode electrode 721aa, the lower anode electrode 721ab, the upper cathode electrode 721ba and the lower cathode electrode 721 bb;

further, the upper anode electrode 721aa and the upper cathode electrode 721ab are plate-type electrodes with insulating bristles 721d arranged below the upper anode electrode 721aa and the lower cathode electrode 721ab and the lower cathode electrode 721aa are plate-type electrodes with insulating bristles 721d arranged above the lower anode electrode 721ab and the lower cathode electrode 721 aa;

further, the upper anode electrode 721aa, the lower anode electrode 721ab, the upper cathode electrode 721ba and the lower cathode electrode 721bb are all roller electrodes coated with insulating, water-permeable and wear-resistant materials;

physical scale breaking: the metal plate 5 is uncoiled by an uncoiler and then conveyed to a stretch bending scale breaking machine for physical crushing, and large oxide scales are crushed and then fall off and removed in the winding advancing process;

constraint grinding: after being bent and crushed, the surface of the metal plate 5 is conveyed to a second tension roller of the dynamic tension machine 3 and then conveyed to a first tension roller 31 through a conveying mechanism 32, the metal plate enters a constraint grinding machine 62 after coming out of the first tension roller 31 to be flexibly ground, and enters the dynamic tension machine 3 on the other side of the constraint grinding machine 62 after coming out of the constraint grinding machine 62 to finish constraint grinding; in the restraint grinding machine 62, after the grinding material is automatically conveyed to the feeding bin 627 by the sand supply mechanism 629, the rotary arc-shaped insert plate 628a is adjusted to adjust the sand feeding amount, then the upper and lower positions of the feeding bin 627 are adjusted by the air cylinder 627c to adjust the sand feeding angle, the positions between the first grinding roller 624 and the support roller 626 are adjusted by adjusting the air cylinders 627c on the first grinding roller 624 and the second grinding roller 625, and finally the friction force between the grinding material and the metal plate 5 is adjusted, so that flexible friction is realized, unnecessary wear is reduced, the metal plate 5 finishes front grinding on the first restraint grinding machine 62 in the dust chamber, and simultaneously reverse grinding is finished on the second restraint grinding machine 62;

electrolysis: the metal plate 5 passes through the power tension machine 3 after finishing the restraint grinding and then enters the electrolysis equipment 7, in the electrolysis module 721, the electrodes are plate type electrodes, because the upper anode electrode 721aa and the upper cathode electrode 721ba are plate type electrodes with insulated bristles 721d arranged below, the lower anode electrode 721ab and the lower cathode electrode 721bb are plate type electrodes with insulated bristles 721d arranged above, the metal plate 5 moves through the upper anode electrode 721aa and the lower anode electrode 721ab or the upper cathode electrode 721ba and the lower cathode electrode 721bb to generate the electrolysis reaction, simultaneously, the insulated bristles 721d continuously and flexibly scrub the front and back surfaces of the metal plate 5, continuously remove the reaction products to ensure that the surface to be reacted continuously leaks out to accelerate the electrolysis reaction, simultaneously, the metal plate 5 and the upper anode electrode 721aa and the lower anode electrode 721ab or the gaps between the metal plate 5 and the upper cathode electrode 721ba and the lower cathode electrode 721bb are not empty, but is replaced by the insulating bristles 721d, which not only insulates, but also reduces the distance between the upper anode electrode 721aa and the lower anode electrode 721ab, and between the upper cathode electrode 721ba and the lower cathode electrode 721bb, thereby reducing energy consumption; if the roller type electrode is coated with the insulating, water-permeable and wear-resistant material, the principle is that the distance between the electrodes is shortened by coating the insulating, water-permeable and wear-resistant material, and the electrodes can be insulated, so that the energy consumption is reduced, and because the insulating bristles 721d or the insulating, water-permeable and wear-resistant material exist, the short circuit caused by the contact between the metal plate and the electrodes can be avoided under the condition of the minimum distance; in the anode electrolytic tank 721a, the metal plate 5 is reduced to obtain an electron reaction relative to the upper anode electrode 721aa and the lower anode electrode 721ab as cathodes, the high valence oxide is reduced to a metal simple substance, in the cathode electrolytic tank 721b, the metal plate is oxidized to lose electrons relative to the upper cathode electrode 721ba and the lower cathode electrode 721bb as anodes, the metal simple substance loses electrons and is dissolved in the electrolyte in an ion form, and then hydroxide ions in the electrolyte form compounds are precipitated in the electrolyte and filtered out; the current flow direction is: power supply positive pole → lead → upper anode electrode and lower anode electrode → electrolytic bath of anode electrolytic bath → metal plate → electrolytic bath of cathode electrolytic bath → upper cathode electrode and lower cathode electrode → lead → power supply negative pole;

and the metal plate enters the next washing chamber after passing through the electrolytic equipment, is washed again, and finally enters a coiling machine for coiling and storage.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A removing method of a combined type scale removing device is characterized in that: the combined type descaling equipment comprises an uncoiler, a stretch bending descaling machine, a powered tensioner and a rolling machine, wherein the uncoiler is used for uncoiling coiled metal plates and conveying the coiled metal plates to the stretch bending descaling machine, the stretch bending descaling machine is arranged on one side of the uncoiler and is used for crushing thicker scale skins in the stretch bending process, a plurality of powered tensioners are arranged on one side of the stretch bending descaling machine, the powered tensioner comprises a first tension roller, a second tension roller and a power motor, the second tension roller is arranged on one horizontal side of the first tension roller, the first tension roller and the second tension roller are driven by the power motor, and the rolling machine is arranged on one side of the powered tensioner and is characterized in that: the device comprises a stretch bending scale breaker, a tension bending scale breaker and a rolling machine, and is characterized by further comprising abrasive material constraint grinding equipment and electrolysis equipment, wherein the abrasive material constraint grinding equipment is arranged between the two power tension machines on one side of the stretch bending scale breaker, and the electrolysis equipment is arranged between the abrasive material constraint grinding equipment and the two power tension machines between the rolling machine;

the abrasive material constraint grinding equipment comprises a dust chamber, a constraint grinding machine and a recovery tank, wherein two constraint grinding machines are arranged in the dust chamber, one constraint grinding machine is arranged above one side of the dust chamber, the other constraint grinding machine is arranged below the other side of the dust chamber, the two constraint grinding machines are arranged in a 45-degree mirror image mode, a metal plate enters the dust chamber and then turns to the constraint grinding machine below after entering the constraint grinding machine above, the constraint grinding machine comprises a main frame, a first auxiliary frame, a second auxiliary frame, a first grinding rubber roller, a second grinding rubber roller, a supporting roller, a feeding bin, a sand carrying roller and a sand supply mechanism, the main frame is fixedly connected to the upper left side of the dust chamber, the first auxiliary frame is fixedly connected to one side of the main frame, and the second auxiliary frame is fixedly connected to the other side of the main frame, the upper part of the first auxiliary frame is movably connected with a first polishing rubber roll, the lower part of the first auxiliary frame is movably connected with a second polishing rubber roll, the first polishing rubber roll and the second polishing rubber roll are both movably connected with the first auxiliary frame through a first air cylinder and driven so as to adjust the gap between the first polishing rubber roll and the gap between the second polishing rubber roll and the surface of the metal plate, one side of the lower part of the second auxiliary frame is fixedly connected with a supporting roll, the upper part of the second auxiliary frame is movably connected with a feeding bin, the bottom of the feeding bin is an inclined plane, the inclined plane at the bottom extends to the outside of the feeding bin so as to convey abrasive materials, one side of the feeding bin is fixedly connected with a sand carrying roller, an opening gap is arranged between the inclined plane at the bottom of the feeding bin and the sand carrying roller, one side of the feeding bin is provided with a slide bar, the bottom of the other side is provided with a second air cylinder, the slide bar is matched with the air cylinder so as to adjust the feeding bin to move up and down, the feeding bin is used for adjusting the sand feeding angle, an arc-shaped inserting plate is movably arranged on one side of a sand carrying roller in the feeding bin, the sand feeding amount can be adjusted by rotating the arc-shaped inserting plate, a sand supply mechanism is arranged at the top of the feeding bin, and an abrasive material recovery pool is arranged below each constraint grinding machine and used for recovering abrasive materials brought down after the metal plate rotates; the grinding material is river sand or carborundum or a mixture of the river sand and the carborundum; the electrolytic equipment comprises a washing chamber and an electrolytic chamber, wherein the washing chamber and the electrolytic chamber are sequentially arranged in the electrolytic equipment from the entering direction to the exiting direction of a metal plate, a plurality of electrolytic modules are arranged in the electrolytic chamber, form an electrolytic assembly line and are used for electrolyzing free grinding materials to restrain oxide skins in pits on the surface of the ground metal plate, a plurality of brush rolls are arranged on the other side of the electrolytic assembly line and are used for brushing reaction products attached to the surface of the metal plate after passing through the electrolytic modules, a waste water collecting pool is arranged at the bottom in the electrolytic equipment and is connected with an external waste water recycling and filtering pool, and the recycled and filtered water is delivered back to the washing chamber through a water pump;

the electrolytic module comprises an anode electrolytic tank and a cathode electrolytic tank, wherein openings are formed in two ends of the anode electrolytic tank and two ends of the cathode electrolytic tank for allowing metal plates to enter and output, electrolyte is arranged in the anode electrolytic tank and the cathode electrolytic tank, the anode electrolytic tank and the cathode electrolytic tank are horizontally arranged at intervals, the anode electrolytic tank comprises an upper anode electrode and a lower anode electrode, the upper anode electrode and the lower anode electrode are symmetrically arranged on the upper side and the lower side, a gap for allowing the metal plates to pass through and completing electrolysis is reserved in the middle of the upper anode electrode and the lower anode electrode, the cathode electrolytic tank comprises an upper cathode electrode and a lower cathode electrode, the upper cathode electrode and the lower cathode electrode are symmetrically arranged on the upper side and the lower side, a gap for allowing the metal plates to pass through and completing electrolysis is reserved in the middle of the upper anode electrode, the lower anode electrode, the upper cathode electrode and one side of the lower cathode electrode are respectively provided with an electrolyte nozzle;

the upper anode electrode and the upper cathode electrode are plate electrodes with insulating bristles arranged below the upper anode electrode and the upper cathode electrode, and the lower anode electrode and the lower cathode electrode are plate electrodes with insulating bristles arranged above the lower anode electrode and the lower cathode electrode;

the upper anode electrode, the lower anode electrode, the upper cathode electrode and the lower cathode electrode are all roller electrodes coated with insulating, water-permeable and wear-resistant materials;

the removing method of the combined type descaling equipment comprises the following steps of physical scale breaking, constraint grinding and electrolysis:

electrolysis: after the metal plate is subjected to constraint grinding, the metal plate passes through a tension machine with power and then enters into an electrolysis device, in an electrolysis module, the electrodes are plate-type electrodes, the lower parts of an upper anode electrode and an upper cathode electrode are provided with the plate-type electrodes with insulating bristles, the upper parts of a lower anode electrode and a lower cathode electrode are also provided with the plate-type electrodes with the insulating bristles, the metal plate moves through the surfaces of the upper anode electrode, the lower anode electrode or the upper cathode electrode and the lower cathode electrode to generate an electrolysis reaction, the front and the back of the metal plate are continuously and flexibly scrubbed by the insulating bristles while the surfaces to be reacted are continuously removed to enable the surface to be reacted to continuously leak so as to accelerate the electrolysis reaction, and gaps between the metal plate and the upper anode electrode or the lower anode electrode or between the metal plate and the upper cathode electrode and the lower cathode electrode are not empty but are replaced by the insulating bristles, so that the metal plate is insulated, and the gaps between the upper anode electrode and the lower anode electrode are also reduced, The distance between the upper cathode electrode and the lower cathode electrode; and the metal plate enters the next washing chamber after passing through the electrolytic equipment, is washed again, and finally enters a coiling machine for coiling and storage.