Steel surface pickling processing system
阅读说明:本技术 一种钢材表面酸洗处理系统 (Steel surface pickling processing system ) 是由 徐小锋 于 2020-06-30 设计创作,主要内容包括:本申请涉及一种钢材表面酸洗处理系统,属于钢材表面处理领域,其包括通过管路依次连接的新酸罐、酸液加热器和上端设有开口的钢材酸洗槽,还包括循环热酸罐及过滤罐,所述钢材酸洗槽的酸液出口与所述过滤罐的进口相连,所述过滤罐内设有过滤件,所述过滤罐的出口与所述循环热酸罐的进口相连,所述循环热酸罐的出口与所述新酸罐、酸液加热器之间的管路相连。本申请的酸洗处理系统中酸液可进行恒温循环利用,对钢材所进行酸洗、碱洗、水洗的三道工序所使用的设备合而为一,以达到高效节能的效果。(The utility model relates to a steel surface pickling processing system belongs to steel surface treatment field, and it includes that new acid tank, acidizing fluid heater and upper end that connect gradually through the pipeline are equipped with open-ended steel descaling bath, still includes circulation hot acid tank and filters the jar, the acidizing fluid export of steel descaling bath with the import of filtering the jar links to each other, be equipped with filtering piece in the filtration jar, the export of filtering the jar with the import of circulation hot acid tank links to each other, the export of circulation hot acid tank with pipeline between new acid tank, the acidizing fluid heater links to each other. The acid liquor in the acid washing treatment system can be recycled at constant temperature, and equipment used in three processes of acid washing, alkali washing and water washing of steel is integrated, so that the effects of high efficiency and energy conservation are achieved.)
1. The utility model provides a steel surface pickling processing system, includes that new acid tank (9), acidizing fluid heater (10) and upper end that connect gradually through the pipeline are equipped with open-ended steel descaling bath (1), its characterized in that: still include circulation hot acid jar (14) and filter tank (15), the acidizing fluid export of steel descaling bath (1) with the import of filtering tank (15) links to each other, be equipped with in filtering tank (15) and filter, the export of filtering tank (15) with the import of circulation hot acid jar (14) links to each other, the export of circulation hot acid jar (14) with pipeline between new acid tank (9), acidizing fluid heater (10) links to each other.
2. The steel product surface pickling treatment system according to claim 1, wherein: the side wall of the steel pickling tank (1) is connected with an acid inlet pipe (111) and an acid outlet pipe (112), the inner side wall of the steel pickling tank (1) is surrounded by a spray pipe (2), a plurality of spray nozzles (21) are evenly arranged on the spray pipe (2), an inlet of the spray pipe (2) is communicated with an alkali inlet pipe (113) and a water inlet pipe (114), and the side wall of the steel pickling tank (1) is connected with a waste liquid discharge pipe (115).
3. The steel product surface pickling treatment system according to claim 2, wherein: the side wall of the spray pipe (2) is connected with a liquid inlet pipe (24) with one end penetrating out of the side wall of the steel pickling tank (1), one end of the liquid inlet pipe (24) is connected with a three-way joint (241), and the alkali inlet pipe (113) and the water inlet pipe (114) are communicated with the three-way joint (17).
4. The steel product surface pickling treatment system according to claim 3, wherein: still include alkali lye storage tank (16) and clear water storage tank (17), advance alkali pipe (113) and alkali lye storage tank (16) intercommunication, inlet tube (114) and clear water storage tank (17) intercommunication, alkali lye storage tank (16) and clear water storage tank (17) laminating setting.
5. The steel product surface pickling treatment system according to claim 1, wherein: a connecting port (141) is arranged on the top wall of the circulating hot acid tank (14), and the outlet of the filtering tank (15) is connected with the connecting port (141) in a flange mode.
6. The steel product surface pickling treatment system according to claim 1, wherein: the acid liquor heater (10) is a silicon carbide heater.
7. The steel product surface pickling treatment system according to claim 1, wherein: steel descaling bath (1) top is equipped with the ring canal (3) of induced drafting, induced draft ring canal (3) are kept away from the lateral wall at steel descaling bath (1) center and have been seted up induced draft main entrance (31), induced draft ring canal (3) have been seted up towards the lateral wall at steel descaling bath (1) center and have been induced drafted a plurality of rows and divide mouth (32), induced draft divide mouth (32) to follow the circumference setting of ring canal (3) of induced drafting.
8. The steel product surface pickling treatment system according to claim 7, wherein: induced draft ring canal (3) roof fixedly connected with installation frid (33) and the symmetrical frid (34) that slides that sets up, installation frid (33), frid (34) that slides and induced draft are formed with the space of sliding of intercommunication between ring canal (3), slide and move in the space of sliding and be connected with and seal open-ended apron (4) in steel pickling tank (1), the relative both sides and the frid (34) laminating of sliding of apron (4).
9. The steel product surface pickling treatment system of claim 8, wherein: the top wall of the air suction ring pipe (3) is embedded with a plurality of balls (35) along the sliding direction of the cover plate (4), and one side of the cover plate (4) facing the steel pickling tank (1) rolls relative to the balls (35).
Technical Field
The application relates to the technical field of steel surface treatment, in particular to a steel surface pickling treatment system.
Background
The sulfur print test is a method for detecting the surface quality of steel products, and can display central cracks, segregation lines, low-power structures, inclusion distribution and the like of steel ingots and continuous casting billets. The steel is required to be acid-washed before the sulfur mark test, the acid-washing is one of the most common methods for cleaning the metal surface, and the acid-washing solution generally comprises hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid and other solutions.
Disclosure of Invention
In order to solve the problem of great resource waste of acid liquor in the related art, the application provides a steel surface pickling treatment system.
The above application purpose of the present application is achieved by the following technical solutions:
the utility model provides a steel surface pickling processing system, includes that the new acid tank, acidizing fluid heater and the upper end that connect gradually through the pipeline are equipped with open-ended steel descaling bath, still includes circulation hot acid tank and filters the jar, the acidizing fluid export of steel descaling bath with the import of filtering the jar links to each other, be equipped with in the filtration jar and filter the piece, the export of filtering the jar with the import of circulation hot acid tank links to each other, the export of circulation hot acid tank with pipeline between new acid tank, the acidizing fluid heater links to each other.
By adopting the technical scheme, the acid liquor in the new acid tank is heated by the acid liquor heater and enters the steel pickling tank, and the new acid tank stops supplying acid to the acid liquor heater when the acid pickling dosage is reached. The steel pickling tank is used for pickling the steel, acid liquor can be discharged into the circulating hot acid tank after the pickling is finished, then the circulating hot acid tank is discharged into the acid liquor heater for heating, and the acid liquor is discharged into the steel pickling tank again for pickling the steel, so that the acid liquor is effectively recycled, and resources are saved. The new acid tank can supplement acid to the circulating hot acid tank, acid liquor in the circulating hot acid tank is regularly and intensively discharged after being used for many times, and the new acid tank supplies acid to the acid liquor heater again after being discharged, so that the acid cleaning of the steel can be continued.
Preferably, the steel descaling bath lateral wall is connected with into acid line and acid discharge pipe, the steel descaling bath inside wall encircles and is provided with the shower, evenly be provided with a plurality of spray nozzles on the shower, the import intercommunication of shower is provided with into alkali pipe and inlet tube, the steel descaling bath lateral wall is connected with the waste liquid discharge pipe.
By adopting the technical scheme, after the steel is placed in the steel pickling tank, the processes of pickling, alkali washing and water washing can be directly and sequentially carried out in the steel pickling tank, only one tank body is used in the three processes, the occupied space is small, and meanwhile, other special equipment for carrying out inter-process operation on the steel is not required to be additionally arranged.
Preferably, the side wall of the spray pipe is connected with a liquid inlet pipe of which one end penetrates out of the side wall of the steel pickling tank, one end of the liquid inlet pipe is connected with a three-way joint, and the alkali inlet pipe and the water inlet pipe are communicated with the three-way joint.
By adopting the technical scheme, the alkali inlet pipe, the water inlet pipe and the spray pipe are connected by utilizing the three-way joint, so that the pipeline arrangement can be simplified.
Preferably, still include alkali lye storage tank and clear water storage tank, advance alkali pipe and alkali lye storage tank intercommunication, inlet tube and clear water storage tank intercommunication, alkali lye storage tank sets up with the laminating of clear water storage tank.
Through adopting above-mentioned technical scheme, can be used to contain hot water in the clear water storage tank, utilize hot water can preheat the alkali lye that holds in the alkali lye storage tank, can make alkali lye better with the acidizing fluid neutralization effect when spraying through the shower, also reduced simultaneously and additionally used the resource that heating equipment carries out the heating to alkali lye to occupy.
Preferably, a connecting port is arranged on the top wall of the circulating hot acid tank, and the outlet of the filter tank is connected with the connecting port in a flange mode.
Through adopting above-mentioned technical scheme, filter tank can practice thrift installation space with the integrative installation of circulation hot acid jar.
Preferably, the acid liquor heater is a silicon carbide heater.
By adopting the technical scheme, the silicon carbide heat exchanger is a novel heat exchanger which utilizes a silicon carbide ceramic material as a heat transfer medium. Because the silicon carbide ceramic has the excellent characteristics of high strength, high hardness, good wear resistance, high temperature resistance, corrosion resistance, good thermal shock resistance, large heat conductivity coefficient, good oxidation resistance and the like, the silicon carbide ceramic is suitable for the use requirements of high-temperature and corrosion-resistant environments. And air-cooling from 1000 ℃ to room temperature, and no crack appears after repeating for more than 50 times; the heat conductivity coefficient is equal to that of stainless steel, the overall heat transfer efficiency is high, and the energy-saving effect is obvious.
Preferably, the steel descaling bath top is equipped with the ring canal that induced drafts, induced draft the ring canal and keep away from the lateral wall at steel descaling bath center and seted up the main mouth that induced drafts, induced draft the ring canal and seted up a plurality of rows towards the lateral wall at steel descaling bath center and induced draft the branch mouth, induced draft the branch mouth edge the circumference setting of the ring canal that induced drafts.
By adopting the technical scheme, when the air suction main port is communicated with other air suction equipment, the acid mist formed above the steel pickling tank can be sucked into the air suction ring pipe through the air suction branch port and can be discharged after being purified outwards by the air suction equipment, so that the pollution of the acid mist to the environment is reduced.
Preferably, the ring canal roof fixedly connected with installation frid and the symmetry that induced drafts set up slide the frid, be formed with the space of sliding of intercommunication between installation frid, the frid that slides and the ring canal that induced drafts, the space that slides is connected with and seals steel descaling bath upper end open-ended apron, the relative both sides and the frid laminating that slides of apron.
By adopting the technical scheme, the cover plate can further reduce the outward dispersion of acid mist in the steel pickling tank, and the cover plate is more convenient to open by adopting a translation operation mode.
Preferably, a plurality of balls are embedded in the top wall of the air suction ring pipe along the sliding direction of the cover plate in an array mode, and one side, facing the steel pickling tank, of the cover plate rolls relative to the balls.
Through adopting above-mentioned technical scheme, the ball is used for becoming rolling friction with the sliding friction in apron and the space that slides, can effectively reduce frictional force, is convenient for promote and open the apron.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the circulating hot acid tank and the filtering tank, the acid liquor for steel acid washing can be recycled, and the effects of saving resources and reducing cost are achieved;
2. through the arrangement of the spray pipe, the alkali inlet pipe and the water inlet pipe, the steel bath pickling tank can simultaneously meet the working condition requirements of steel acid washing, alkali washing and water washing, the operation is convenient, and the occupied area is saved;
3. through the setting of the ring canal that induced drafts, can in time absorb the produced acid mist of steel pickling in-process, the apron can cooperate the ring canal that induced drafts to further absorb the acid mist simultaneously, also makes external object be difficult for directly dropping to the steel descaling bath.
Drawings
FIG. 1 is a schematic view of the overall process for embodying a steel surface pickling treatment system in the embodiment of the present application;
FIG. 2 is a schematic diagram of the overall structure of the steel pickling tank and the air suction ring pipe when the installation is completed in the embodiment of the application;
FIG. 3 is a schematic view of an embodiment of the present application for showing a steel pickling tank and its internal structure separately;
fig. 4 is a schematic structural diagram for embodying the sliding connection of the cover plate and the suction ring pipe in the embodiment of the present application.
Description of reference numerals: 1. a steel pickling tank; 11. an upper working area; 111. an acid inlet pipe; 112. an acid discharge pipe; 113. an alkali inlet pipe; 114. a water inlet pipe; 115. a waste liquid discharge pipe; 116. an overflow pipe; 117. a support plate; 118. clamping the tube; 12. a lower isolation region; 13. flanging; 2. a shower pipe; 21. a spray nozzle; 22. positioning the metal hose; 24. a liquid inlet pipe; 241. a three-way joint; 3. an air suction ring pipe; 31. a main air suction port; 32. air suction and port division; 33. installing a groove plate; 34. a sliding groove plate; 35. a ball bearing; 4. a cover plate; 5. placing a tray; 51. a stirring blade; 52. rotating the tube; 6. a drive assembly; 61. a drive motor; 62. a bevel gear; 63. a helical gear; 7. a rotary joint; 71. a heat source inlet pipe; 72. a heat source outlet pipe; 8. a partition plate; 9. a fresh acid tank; 10. an acid liquor heater; 14. a circulating hot acid tank; 141. a connecting port; 15. a filter tank; 151. a filter screen; 152. an access door; 16. a lye storage tank; 17. clear water storage tank.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The steel surface pickling treatment system disclosed in the embodiment of the application, as shown in fig. 1, includes a new acid tank 9, an acid liquid heater 10, a steel pickling tank 1, a filter tank 15, and a circulating hot acid tank 14. The fresh acid tank 9, the acid liquid heater 10 and the steel pickling tank 1 are communicated through pipelines, a connecting port 141 is arranged on the top wall of the circulating hot acid tank 14, the filtering tank 15 is positioned above the circulating hot acid tank 14, and the outlet of the filtering tank 15 is in flange connection with the connecting port 141.
The fresh acid tank 9 stores fresh acid, the fresh acid is pumped to the acid liquor heater 10 through a pipeline to be heated, the heated acid liquor is pumped to the steel acid washing tank 1 through the pipeline, and the fresh acid tank 9 stops supplying acid to the acid liquor heater 10 when the acid washing dosage is reached. The acid liquor heater 10 may be a graphite heater or a silicon carbide heater, and in this embodiment, a silicon carbide heater with high heat transfer efficiency and good energy-saving effect is preferred, so that the activation degree of internal molecules of the acid liquor can be increased after the acid liquor is heated, and the efficiency of subsequent steel acid washing is improved.
Acid liquor in the steel pickling tank 1 is pumped into a filtering tank 15 through a pipeline after being used, a filtering piece is arranged in the filtering tank 15, impurities in the acid liquor are filtered by the filtering piece and then enter a circulating hot acid tank 14, and the acid liquor in the circulating hot acid tank 14 is pumped into an acid liquor heater 10 through the pipeline, so that the cyclic utilization of the acid liquor is realized. The acid liquor in the circulating hot acid tank 14 is replenished by the new acid tank 9, and is completely discharged from the circulating hot acid tank 14 after being recycled for a certain number of times.
The filtering member is horizontally or obliquely arranged on a filtering net 151 on the inner side wall of the filtering tank 15, and an access door 152 is arranged on the side wall of the filtering tank 15 and below the filtering net 151. Filter screen 151 adopts the mode of slope installation in this embodiment, opens the back when access door 152, and impurity on the filter screen 151 can receive the dead weight to gather in the least significant end of filter screen 151 to made things convenient for and cleared up impurity.
As shown in figure 2, the steel pickling tank 1 is provided with an opening at the upper end, a
As shown in fig. 2, the driving
As shown in fig. 2, the side wall of the
As shown in fig. 2, the side wall of the upper working area 11 is connected to an acid inlet pipe 111, the acid inlet pipe 111 is a bent pipe, and one end of the bent pipe is connected to the outlet of the acid heater 10, and the other end extends to the partition plate 8. When acid liquor is injected into the upper working area 11 through the acid inlet pipe 111, a heat source with sufficient pressure is injected into the inner flow passage of the
In the specific implementation process, the heat source can be water, oil or steam, and the inclination direction of the
As shown in FIGS. 2 and 3, an
As shown in fig. 3, the inner side wall of the upper working area 11 is fixedly connected with a clamping
As shown in fig. 3, because the shape and length of the steel are different, the surface of the steel soaked in the acid solution is easily unable to be effectively cleaned by the alkali solution and the clean water, so the spray nozzle 21 is connected with the spray pipe 2 by the positioning metal hose 22, and the positioning metal hose 22 can be self-shaped after being bent and deformed, so as to freely adjust the spray direction of the spray nozzle 21 according to different steel, so that the end of the spray nozzle 21 far away from the spray pipe 2 can be inclined towards the steel, and further the surface of the steel can be cleaned to the maximum extent.
As shown in fig. 4, a plurality of rows of uniformly distributed air suction branch openings 32 are formed in the side wall of the air suction ring pipe 3 facing the center of the steel pickling tank 1, any two adjacent rows of air suction branch openings 32 are staggered with each other, and an air suction main opening 31 (see fig. 2) is formed in one side wall of the air suction ring pipe 3 far away from the center of the steel pickling tank 1. Induced draft 3 roof fixedly connected with of ring canal 3 along the centre line symmetry of its width direction set up the
When carrying out the sulphur seal experiment, promote apron 4 to with
The implementation principle of the embodiment is as follows:
firstly, steel is hoisted to a
And secondly, starting the driving
And thirdly, opening the alkali inlet pipe 113 and the waste
Fourthly, the alkali inlet pipe 113 is closed, the water inlet pipe 114 is opened, clean water is sprayed to the steel by the spray nozzle 21 for washing, the spraying time lasts for 2-3min, and waste water is also discharged from the waste
And step five, closing the air suction equipment, opening the cover plate 4 to take out the steel, and finishing the acid, alkali and water washing processes.
If other steel products need to be treated, the acid liquor in the circulating hot acid tank 14 is introduced into the acid liquor heater 10 to be heated and enters the steel product pickling tank 1, and the two to five steps are repeated. The acid liquor in the circulating hot acid tank 14 can be replenished by the new acid tank 9, and according to the judgment of the experience of workers, when the acid liquor in the circulating hot acid tank 14 is recycled for a certain number of times and cannot be used, the acid liquor is completely discharged from the interior of the circulating hot acid tank, and then the new acid tank 9 supplies acid to the steel pickling tank 1.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
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