CN215799925U - Acid liquor circulating device for acid pickling process - Google Patents
Acid liquor circulating device for acid pickling process Download PDFInfo
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- CN215799925U CN215799925U CN202121968546.8U CN202121968546U CN215799925U CN 215799925 U CN215799925 U CN 215799925U CN 202121968546 U CN202121968546 U CN 202121968546U CN 215799925 U CN215799925 U CN 215799925U
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Abstract
The utility model discloses an acid liquor circulating device for an acid pickling process, which relates to the technical field of acid pickling processes and aims to solve the problems that impurities are inconvenient to clean, the pH value is inconvenient to adjust and effective acid pickling cannot be carried out on the interior of a steel pipe in the traditional acid pickling tank; the upper cover can be automatically closed when the preset workpiece is subjected to acid washing; the part of the liquid inlet device, which is positioned in the pickling tank, can be stretched, so that a liquid outlet on the liquid inlet device is closer to a preset workpiece; impurities can be well filtered by the filter, the pH value of the acid liquor can be adjusted in the adjusting tank, the acid liquor can fully flow through gaps between the steel pipes and the inner parts of the steel pipes, and the acid washing effect of the steel pipes is improved.
Description
Technical Field
The utility model relates to the technical field of pickling processes, in particular to an acid liquor circulating device for a pickling process.
Background
The pickling solution of the pickling process is generally a mixture of various acids, mainly including sulfuric acid, nitric acid, hydrofluoric acid and the like, and the mixed acids have strong corrosivity, strong oxidability and high temperature of corrosive media, which puts high requirements on the corrosion resistance of the anticorrosive material. From production to a wastewater and waste gas recovery system, each link of the stainless steel pickling production line process has a strong corrosion state, so that the quality of anticorrosive material selection is directly related to normal use of equipment, workshop terraces, trenches, an environment-friendly recovery system of wastewater and waste gas and the like.
Black and yellow oxide scales appear in the stainless steel in the processing process, in order to improve the appearance and corrosion resistance of the stainless steel, the processed stainless steel needs to be subjected to acid pickling passivation treatment, the purpose is to remove the oxide scales generated after welding and high-temperature processing treatment, make the oxide scales silvery and bright, form an oxide film taking chromium as a main substance on the surface after treatment, and avoid secondary oxygen corrosion, so that the passivation purpose is achieved, the surface corrosion resistance quality of a stainless steel product is improved, and the service life of equipment is prolonged.
The traditional pickling bath acid liquor is usually only stored in the pickling bath, solid impurities which are insoluble in the pickling bath can be doped in the acid liquor along with the pickling work, and the solid impurities can scratch the surface of a washed workpiece in the pickling process to change the surface precision of the workpiece; the adjustment of the pH value of the acid solution is inconvenient; for pipe workpieces, the inside of the steel pipe cannot be fully contacted with acid liquor in the pickling process, so that the pickling quality of the steel pipe is influenced;
the present invention is directed to a solution to the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, i.e. the problems of the background art, the present invention provides an acid liquor circulating device for an acid washing process, which comprises an acid washing tank, wherein the acid washing tank is provided with an upper cover and an acid liquor circulating device, wherein:
the acid liquor circulating device comprises an adjusting tank, a circulating pump, a filter, a liquid inlet device and a liquid outlet device, wherein a loop is formed between the acid liquor circulating device and the pickling tank;
the upper cover can be automatically closed when the preset workpiece is subjected to acid washing;
the part of the liquid inlet device in the pickling tank can be stretched, so that a liquid outlet on the liquid inlet device is closer to a preset workpiece.
The utility model is further provided with: the filter is positioned between the liquid outlet device and the regulating tank.
The utility model is further provided with: the feed liquor ware is including running through sliding connection and being in feed liquor pipe on the pickling bath lateral wall, the feed liquor pipe is in through setting up actuating mechanism on the pickling bath outer wall drives telescopically, the tip of feed liquor pipe is provided with out the liquid dish.
The utility model is further provided with: a first elastic piece is arranged between the liquid outlet disc and the pickling tank.
The utility model is further provided with: the upper cover comprises two groups of plates hinged to the pickling tank, and the two sides of the two groups of plates are connected with the pickling tank through second elastic pieces.
The beneficial technical effects of the utility model are as follows: the acid liquor can be circulated in the acid washing tank and the acid liquor rotating device, impurities can be well filtered by the filter in the circulating process, and the pH value of the acid liquor can be adjusted in the adjusting tank to be always in a proper acidity range; the liquid inlet device can be stretched and retracted, and after the steel pipe is immersed in the acid liquor, the liquid inlet device can be tightly attached to one end of the steel pipe, so that the acid liquor can fully flow through gaps between the steel pipe and the interior of the steel pipe, and the acid washing effect of the steel pipe is improved; meanwhile, the upper cover can be automatically kept in a closed state when the steel pipe is subjected to acid washing and the acid washing operation is stopped, so that acid liquor splashing is avoided, and the volatilization amount of the acid liquor is reduced.
Drawings
FIG. 1 shows a schematic front cross-sectional structure of the present invention;
FIG. 2 is a schematic cross-sectional view taken along the plane B-B of FIG. 1 according to the present invention;
FIG. 3 shows a rear view of the present invention;
fig. 4 shows a schematic view of the utility model at a in fig. 1 in a partially enlarged configuration.
Reference numerals: 1-a pickling tank, 2-an adjusting tank, 3-a circulating pump, 4-a filter, 5-a liquid inlet device, 51-a liquid inlet pipe, 52-a liquid outlet disc, 53-a first elastic element, 6-a liquid outlet device, 7-a plate element and 8-a second elastic element.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Example (b):
referring to fig. 1-4, fig. 1 shows a schematic sectional structure view from the front, fig. 2 shows a schematic sectional structure view from the side B-B in fig. 1, fig. 3 shows a schematic structural view from the back, fig. 4 shows a schematic structural view of the utility model enlarged partially at the position a in fig. 1, the utility model provides an acid liquor circulating device for an acid washing process, which includes an acid washing tank 1, an upper cover and an acid liquor circulating device are arranged on the acid washing tank 1, wherein:
the acid liquor circulating device comprises an adjusting tank 2, a circulating pump 3, a filter 4, a liquid inlet device 5 and a liquid outlet device 6 which form a loop with the pickling tank 1;
the adjusting tank 2 is an intermediate acid liquid tank, and the pH value of the acid liquid can be adjusted;
in the embodiment, the pickling tank 1 is a rectangular water tank, acid liquor for pickling is arranged in the pickling tank, workpieces for pickling are steel pipes, and the steel pipes enter the pickling tank 1 for pickling under the transportation of a hoisting device by taking bundles as units;
the upper cover can be automatically closed when the preset workpiece is pickled;
in this embodiment, as shown in fig. 1 and fig. 2, the upper cover includes two groups of plate members 7 hinged to the pickling tank 1, and two sides of the two groups of plate members 7 are connected to the pickling tank 1 through second elastic members 8, wherein an elastic force of the second elastic member 8 located on an upper side of the plate member 7 is greater than an elastic force of the second elastic member 8 located on a lower side of the plate member 7, and a difference between the elastic forces of the second elastic member 8 located above and the second elastic member 8 located below can just enable the two groups of plate members 7 to be in a horizontal equilibrium state against their own gravity;
when the steel pipe is placed into the pickling tank 1, when the steel pipe in bundle unit contacts the plate members 7, the two groups of plate members 7 are opened downwards under the action of the self weight of the steel pipe, so that the steel pipe can be immersed into the acid liquor;
after the steel pipe is subjected to acid washing, the steel pipe is continuously lifted by adopting a lifting appliance, and after the steel pipe contacts the plate members 7, the two groups of plate members 7 can be upwards opened along with the upward movement of the steel pipe, so that the steel pipe can be moved away;
in the pickling process and after the steel pipe leaves the pickling tank 1, the two groups of plates 7 are always closed and filled, so that acid liquid splashing is avoided, and meanwhile, the acid liquid volatilization can be avoided to a certain extent;
in order to improve the sealing performance of the upper cover formed by the two groups of plates 7, sealing elements, which can be rubber sheets, can be arranged on the opposite end surfaces of the two groups of plates 7;
the surfaces of the rubber piece and the plate 7 are sprayed with anti-corrosion layers;
the part of the liquid inlet device 5 positioned in the pickling tank 1 can be stretched, so that a liquid outlet on the liquid inlet device 5 is closer to a preset workpiece;
after the liquid inlet device 5 is extended, a liquid outlet of the liquid inlet device can abut against one side of the steel pipe taking the bundle as a unit, so that acid liquid can fully flow through the inside of the steel pipe and gaps among the steel pipes, and the steel pipe is subjected to more sufficient acid washing;
in the embodiment, the liquid inlet device 5 comprises a liquid inlet pipe 51 which penetrates through the side wall of the pickling tank 1 and is connected with the side wall of the pickling tank 1 in a sliding manner, the liquid inlet pipe 51 is driven to stretch by a driving mechanism arranged on the outer wall of the pickling tank 1, and a liquid outlet disc 52 is arranged at the end part of the liquid inlet pipe 51;
the driving part in the embodiment is a driving motor and a rotating ring, wherein the driving motor is arranged on the pickling tank 1, the rotating disc is rotationally connected to the pickling tank 1, the liquid inlet pipe 51 is provided with a sliding section and a threaded section, the sliding section is connected to the pickling tank 1 in a penetrating and sliding manner, the interface of the sliding section is rectangular, the rotating disc is in threaded connection with the threaded section on the liquid inlet pipe 51, and the rotating ring is driven to operate by the driving motor;
a first elastic piece 53 is arranged between the liquid outlet disc 52 and the pickling tank 1, so that the tightness of threaded connection between the rotating ring and the threaded section is improved;
the output end of the driving motor and the rotating ring are provided with gears which are meshed with each other, so that torque is transmitted, and the driving motor is also a private clothes motor and has a controllable running direction;
the liquid inlet pipe 51 can slide on the side wall of the pickling tank 1, and good sealing performance is required between the liquid inlet pipe and the pickling tank;
in the pipeline forming the circulation back path, a telescopic section is arranged at a position close to the liquid inlet pipe 51, and the telescopic section can be formed by a corrugated pipe and is used for adapting the sliding of the liquid inlet pipe 51 on the pickling tank 1.
Preferably, the filter 4 is located between the liquid outlet 6 and the conditioning tank 2, and the filter 4 comprises a housing and a filter element arranged in the housing, and the housing is connected with the pipeline.
While the utility model has been described with reference to a preferred embodiment, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model, and particularly, features shown in the various embodiments may be combined in any suitable manner without departing from the scope of the utility model. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.
Claims (5)
1. An acid liquor circulating device for an acid pickling process is characterized in that: including pickling bath (1), be provided with upper cover and acidizing fluid circulating device on pickling bath (1), wherein:
the acid liquor circulating device comprises an adjusting tank (2), a circulating pump (3), a filter (4), a liquid inlet device (5) and a liquid outlet device (6) which form a loop with the acid washing tank (1);
the upper cover can be automatically closed when the preset workpiece is subjected to acid washing;
the part of the liquid inlet device (5) positioned in the pickling tank (1) can be stretched, so that a liquid outlet on the liquid inlet device (5) is closer to a preset workpiece.
2. The acid liquor circulating device for the acid pickling process as claimed in claim 1, wherein: the filter (4) is positioned between the liquid outlet device (6) and the regulating tank (2).
3. The acid liquor circulating device for the acid pickling process as claimed in claim 1, wherein: liquid inlet ware (5) are including running through sliding connection feed liquor pipe (51) on pickling bath (1) lateral wall, feed liquor pipe (51) are in through setting up actuating mechanism on pickling bath (1) outer wall drives telescopically, the tip of feed liquor pipe (51) is provided with out liquid dish (52).
4. The acid liquor circulating device for the pickling process as claimed in claim 3, wherein: a first elastic piece (53) is arranged between the liquid outlet disc (52) and the pickling tank (1).
5. The acid liquor circulating device for the acid pickling process as claimed in claim 1, wherein: the upper cover comprises two groups of plates (7) hinged to the pickling tank (1), and the two sides of the two groups of plates (7) are connected with the pickling tank (1) through second elastic pieces (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121968546.8U CN215799925U (en) | 2021-08-20 | 2021-08-20 | Acid liquor circulating device for acid pickling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121968546.8U CN215799925U (en) | 2021-08-20 | 2021-08-20 | Acid liquor circulating device for acid pickling process |
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| Publication Number | Publication Date |
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| CN215799925U true CN215799925U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121968546.8U Active CN215799925U (en) | 2021-08-20 | 2021-08-20 | Acid liquor circulating device for acid pickling process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875421A (en) * | 2022-03-14 | 2022-08-09 | 济南市平阴县玛钢厂 | Cooling system for casting process |
-
2021
- 2021-08-20 CN CN202121968546.8U patent/CN215799925U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875421A (en) * | 2022-03-14 | 2022-08-09 | 济南市平阴县玛钢厂 | Cooling system for casting process |
| CN114875421B (en) * | 2022-03-14 | 2024-03-01 | 济南市平阴县玛钢厂 | Cooling system for casting process |
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