Pickling equipment convenient for recycling acid liquor
By designing a pickling equipment including a pickling sink, a descaling machine and agitating leaves, the problem that dirt and impurities in the acid solution affect the pickling effect is solved, and efficient purification of the acid solution and improvement of production efficiency is achieved.
Patent Information
- Application Number
- CN202421303936.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-07
AI Technical Summary
After multiple use, the acid solution will contain a lot of dirt and impurities, which will affect its cleanliness and purity, resulting in less significant pickling effect on the metal.
A pickling equipment is designed, including a pickling sink, a descaling machine and agitating leaves. By separating the dirt in the acid solution from the acid solution, the mixing leaves are used to accelerate the fusion of the acid solution and chemical substances, and efficient purification of the acid solution is achieved.
Through the use of this equipment, the acid solution that has been used repeatedly becomes purer, preventing the problem that impurities in the acid solution affect the pickling effect, shortening the purification time and improving production efficiency.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the field of acid liquid recycling, in particular to a pickling device which is convenient for acid liquid recycling. Background Art
[0002] Acid is a highly corrosive liquid that can react chemically with oxides, rust, etc. on the metal surface, thereby dissolving or converting them into easily clear substances, thereby making the metal surface purer.
[0003] When using acid to pickle metal, you need to first immerse the metal in the prepared acid. After removing the oxides and rust on the surface through chemical reaction, rinse the acid off the metal surface with clean water to prevent the residual acid from corroding the metal. Finally, dry the metal.
[0004] However, after the acid has completed multiple pickling operations, it will contain a large amount of dirt and impurities, which will affect the cleanliness and purity of the acid, resulting in the subsequent pickling of metals being ineffective. Therefore, in order to solve the above problem, a pickling device that is convenient for the recycling of acid is proposed. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the utility model proposes a pickling device that is convenient for recycling acid solution.
[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model is a pickling equipment that is convenient for the circulation of acid solution, comprising a pickling tank; a first water pipe is connected to the middle of the pickling tank; a descaling machine is connected to the end of the first water pipe; a first water pump is connected to the end of the first water pipe; a hollow rotating shaft is connected to the middle of the descaling machine; a servo motor is connected to the top of the hollow rotating shaft; a shaft door is connected to the middle of the hollow rotating shaft; a plurality of sets of leaves are connected to the side of the shaft door; a first handle is fixedly connected to the side of the shaft door; a plurality of groups of stirring blades are fixedly connected to the middle of the hollow rotating shaft; a plurality of groups of discharge ports are opened at the end of the hollow rotating shaft; a layer plate is fixedly connected to the middle of the descaling machine; a filter plate is fixedly connected to the middle of the descaling machine.
[0007] Preferably, a second water pipe is connected to the side of the descaling machine; a second water pump is connected to the end of the second water pipe; the other end of the second water pipe is connected to the middle of the descaling machine; multiple groups of U-shaped plates are fixedly connected to the inner wall of the descaling machine; scrapers are slidably connected to the middle of the U-shaped plates; multiple groups of telescopic rods are fixedly connected to the middle of the scrapers; and pull plates are fixedly connected to the ends of the telescopic rods.
[0008] Preferably, a slide plate is slidably connected to the side of the descaling machine; a second handle is fixedly connected to the end of the slide plate; a sponge ring is connected to the middle of the second handle; and a plurality of groups of rubber strips are fixedly connected to the side of the descaling machine.
[0009] Preferably, a plurality of heating pumps are fixedly connected to the bottom of the descaling machine; a heat-conducting column is fixedly connected to the middle of the heating pump; a hollow copper tube is fixedly connected to the middle of the heating pump; a third water pipe is connected to the side of the descaling machine; and the end of the third water pipe is connected to the middle of the pickling tank.
[0010] Preferably, a plurality of exhaust fans are fixedly connected to the side of the descaling machine; a cross support frame is fixedly connected to the middle of the exhaust fans; a fixed-point rotating shaft is rotatably connected to the middle of the cross support frame; and a plurality of fan blades are fixedly connected to the middle of the fixed-point rotating shaft.
[0011] Preferably, the ends of the exhaust fans are fixedly connected with valve plates.
[0012] Preferably, a glass observation panel is provided in the middle of the descaling machine.
[0013] The utility model is beneficial in that:
[0014] 1. The utility model discloses a pickling device that is convenient for recycling acid liquid. By separating dirt and impurities from the acid liquid, the acid liquid that has been used many times can be made purer, thereby preventing the impurities inside the acid liquid from affecting the effect of the acid liquid working next time after multiple uses, resulting in an insignificant pickling effect on metals. The stirring blades can accelerate the fusion of the acid liquid and the chemical substances, thereby shortening the time required for purifying the acid liquid and improving production efficiency.
[0015] 2. The utility model discloses a pickling device that is convenient for recycling acid liquid. The scraper can clean the dirt and impurities on the filter plate, thereby preventing the dirt and impurities from remaining on the surface of the filter plate and affecting the next purification of the acid liquid. At the same time, the cleaning work becomes simple and easy, thereby improving the work efficiency of the workers. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0018] Figure 2It is a three-dimensional cross-sectional structural schematic diagram of the utility model;
[0019] Figure 3 This is a schematic diagram of the hollow shaft structure in the utility model;
[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the layer plate in the utility model;
[0021] Figure 5 It is a schematic cross-sectional structure diagram of the descaling machine in the utility model;
[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the exhaust fan in the present utility model.
[0023] In the figure: 1. pickling tank; 11. first water pipe; 12. descaling machine; 13. first water pump; 14. servo motor; 15. hollow shaft; 16. shaft door; 17. hinge; 18. first handle; 19. stirring blade; 111. discharge port; 112. layer plate; 113. filter plate; 2. second water pipe; 21. second water pump; 22. U-shaped plate; 23. scraper; 24. telescopic rod; 25. pull plate; 3. skateboard; 31. second handle; 32. sponge ring; 33. rubber strip; 4. heating pump; 41. heat-conducting column; 42. hollow copper tube; 43. third water pipe; 5. exhaust fan; 51. cross support frame; 52. fixed shaft; 53. fan blade; 6. valve plate; 7. glass observation board. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a pickling device for circulating acid solution comprises a pickling tank 1; a first water pipe 11 is connected to the middle of the pickling tank 1; a descaling machine 12 is connected to the end of the first water pipe 11; a first water pump 13 is connected to the end of the first water pipe 11; a hollow shaft 15 is connected to the middle of the descaling machine 12; a servo motor 14 is connected to the top of the hollow shaft 15; a shaft door 16 is connected to the middle of the hollow shaft 15; a plurality of combination leaves 17 are connected to the side of the shaft door 16; a first handle 18 is fixed to the side of the shaft door 16; a hollow shaft 15 is connected to the middle of the hollow shaft 15; a servo motor 14 is connected to the top ... A plurality of stirring blades 19 are fixedly connected; a plurality of discharge ports 111 are provided at the end of the hollow rotating shaft 15; a layer plate 112 is fixedly connected to the middle of the descaling machine 12; a filter plate 113 is fixedly connected to the middle of the descaling machine 12; when working, the acid is poured into the pickling tank 1 and the metal is pickled. When the acid in the pickling tank 1 contains a large amount of dirt and impurities due to excessive pickling times, the acid can be pumped into the descaling machine 12 through the first water pipe 11 by means of the first water pump 13, and then the first handle 18 is pulled to open the shaft door 16 under the action of the hinge 17, and then Pour citric acid, phosphoric acid and other chemicals that can separate acid and impurities into the hollow shaft 15 from the shaft door 16, and then make the servo motor 14 work to drive the hollow shaft 15 to rotate. When the hollow shaft 15 rotates, it will drive the stirring blade 19 to rotate. At the same time, the chemical substances added in the hollow shaft 15 will be thrown out from the discharge port 111 under the rotation of the hollow shaft 15, and will be fused with the acid under the rotation of the stirring blade 19. When the chemical substances and the acid are fully fused, the rotation of the hollow shaft 15 can be stopped, and then it can be left to stand for a period of time. The acid liquid will be separated from the dirt and impurities in the acid liquid by the action of the chemical substances, and the separated impurities will float above the acid liquid due to density and mass. This step can make the acid liquid that has been used many times purer by separating the dirt and impurities in the acid liquid from the acid liquid, thereby preventing the impurities in the acid liquid from affecting the effect of the acid liquid working next time after multiple uses, resulting in the situation that the pickling effect on the metal is not significant. The action of the stirring blade 19 can accelerate the fusion of the acid liquid and the chemical substances, thereby shortening the time required for purifying the acid liquid and improving production efficiency.
[0026] like Figure 2 , Figure 3 , Figure 4As shown, the second water pipe 2 is connected to the side of the descaling machine 12; the second water pipe 2 is connected to the second water pump 21 at the end; the other end of the second water pipe 2 is connected to the middle of the descaling machine 12; multiple groups of U-shaped plates 22 are fixedly connected to the inner wall of the descaling machine 12; the middle of the U-shaped plates 22 are slidably connected to the scraper 23; the middle of the scraper 23 is fixedly connected to multiple groups of telescopic rods 24; the ends of the telescopic rods 24 are fixedly connected to the pull plates 25; when working, after the acid liquid has been left to stand, the second water pump 21 can be operated first to pump the purified acid liquid to the bottom of the descaling machine 12 through the second water pipe 2, and the acid liquid can be pumped out after being pumped out. Dirt and impurities will remain on the surface of the filter plate 113. At this time, the telescopic rod 24 can be extended first, and then the pull plate 25 can be held and pushed and pulled to drive the scraper 23 to slide inside the U-shaped plate 22. When the scraper 23 slides, it will push the dirt and impurities on the surface of the filter plate 113 to move together. In this step, the dirt and impurities on the filter plate 113 can be cleaned through the action of the scraper 23, so as to prevent the dirt and impurities from remaining on the surface of the filter plate 113, thereby affecting the next purification of the acid solution. At the same time, the cleaning work becomes simple and easy, which improves the work efficiency of the workers.
[0027] like Figure 1 , Figure 2 , Figure 5 As shown, a slide plate 3 is slidably connected to the side of the descaling machine 12; a second handle 31 is fixedly connected to the end of the slide plate 3; a sponge ring 32 is connected to the middle of the second handle 31; a plurality of rubber strips 33 are fixedly connected to the side of the descaling machine 12; during operation, when the scraper 23 pushes the dirt and impurities to a certain position, the second handle 31 can be first held and pulled to pull the slide plate 3 out of the middle of the descaling machine 12 to form an opening on the side of the descaling machine 12, at this time, the dirt pushed by the scraper 23 can be cleaned out of the descaling machine 12 through the opening, and this step can be performed by pulling out the slide plate 3 to cooperate with the scraper 23 to clean the dirt, so as to improve the efficiency of the cleaning work, and the rubber strip 33 can have a certain sealing effect, thereby preventing the acid inside the descaling machine 12 from easily flowing out from the connection gap between the slide plate 3 and the descaling machine 12, and the sponge ring 32 can provide a more comfortable texture for the worker's hands when the worker pulls out the slide plate 3.
[0028] like Figure 1 , Figure 2As shown, the bottom of the descaling machine 12 is fixedly connected to multiple groups of heating pumps 4; the middle of the heating pumps 4 are fixedly connected to heat-conducting columns 41; the middle of the heating pumps 4 are fixedly connected to hollow copper tubes 42; the side of the descaling machine 12 is connected to a third water pipe 43; the end of the third water pipe 43 is connected to the middle of the pickling tank 1; when working, when the purified acid enters the bottom of the descaling machine 12, the heating pump 4 will generate heat and heat up the acid at the bottom of the descaling machine 12, the heat-conducting columns 41 can better dissipate the heat generated by the heating pumps 4, and the hollow copper tubes 42 can protect the heat-conducting columns 41 from being corroded by the acid. At the same time, because the material of the hollow copper tube 42 has a good thermal conductivity, the situation that the hollow copper tube 42 may block the heat emitted by the heat-conducting column 41 can be reduced. When the temperature of the acid solution rises to a certain level, the third water pipe 43 can introduce the acid solution into the pickling tank 1, so that the acid solution can pickle the metal. This step can heat the acid solution through the cooperation of the heating pump 4 and the heat-conducting column 41, so as to accelerate the chemical reaction of the acid solution, make the hydrogen ions in the acid solution more active, and more easily react with the oxides and dirt on the metal surface, thereby accelerating the pickling speed and improving the pickling effect.
[0029] like Figure 1 , Figure 2 , Figure 6 As shown, multiple sets of exhaust fans 5 are fixedly connected to the side of the descaling machine 12; a cross support frame 51 is fixedly connected to the middle of the exhaust fan 5; a fixed-point rotating shaft 52 is rotatably connected to the middle of the cross support frame 51; multiple sets of fan blades 53 are fixedly connected to the middle of the fixed-point rotating shaft 52; during operation, when the heating pump 4 heats the acid solution, the temperature inside the descaling machine 12 will rise at the same time and produce a temperature difference with the outside, which is likely to produce a certain amount of water vapor. At this time, the fan blades 53 can be driven to rotate by the fixed-point rotating shaft 52, so as to form a certain wind force, which can ventilate and dissipate the inside of the descaling machine 12 and discharge the water vapor inside the descaling machine 12 to the outside. In this step, the exhaust fan 5 can reduce the effect of water vapor inside the descaling machine 12, so as to prevent water vapor from dripping into the acid solution under long-term accumulation, thereby affecting the concentration of the acid solution and reducing the pickling effect.
[0030] like Figure 1 , Figure 2 , Figure 6 As shown, the ends of the exhaust fan 5 are fixedly connected with valve plates 6; when the exhaust fan 5 is working, when the wind force it generates flows through the valve plates 6, the valve plates 6 will expand outwards under the action of wind pressure, so that the water vapor exhausted by the exhaust fan 5 can flow out to the outside smoothly. When the exhaust fan 5 is not working, the valve plates 6 will be in a closed state. This step can reduce the dust from the outside from the exhaust fan 5 to the inside of the descaling machine 12, thereby causing the acid inside the descaling machine 12 to be polluted by the action of the valve plates 6 when the exhaust fan 5 is not working.
[0031] like Figure 1 As shown, a glass observation panel 7 is provided in the middle of the descaling machine 12; when the descaling machine 12 is in operation, the internal situation of the descaling machine 12 can be observed through the glass observation panel 7. In this step, the glass observation panel 7 allows workers to observe the degree of purification of the acid liquid, thereby determining when to pump the acid liquid to the bottom of the descaling machine 12 for heating. The water level line of the acid liquid that needs to be heated can also be observed through the glass observation panel 7, thereby preventing the water level from exceeding the position of the exhaust fan 5, which would cause the acid liquid to corrode the exhaust fan 5.
[0032] Working principle: during operation, acid is poured into the pickling tank 1 and the metal is pickled. When the acid in the pickling tank 1 contains a large amount of dirt and impurities due to excessive pickling times, the acid can be pumped into the descaling machine 12 through the first water pipe 11 with the help of the first water pump 13, and then the first handle 18 is pulled to open the shaft door 16 under the action of the hinge 17, and then citric acid, phosphoric acid and other chemicals that can separate the acid and impurities are poured into the hollow shaft 15 from the shaft door 16, and then the servo motor 14 is operated to drive the hollow shaft 15 to rotate. When the hollow shaft 15 rotates, it will drive the stirring blade 19 to rotate, and at the same time, the chemical substances added to the hollow shaft 15 will be discharged from the material under the rotation of the hollow shaft 15. The chemical substance is thrown out from the opening 111, and is fused with the acid liquid under the rotation of the stirring blade 19. When the chemical substance and the acid liquid are fully fused, the rotation of the hollow shaft 15 can be stopped. Then, after standing for a period of time, the acid liquid will be separated from the dirt and impurities inside by the action of the chemical substance, and the separated impurities will float above the acid liquid due to density and quality. This step can make the acid liquid that has been used many times purer by separating the dirt and impurities in the acid liquid from the acid liquid, thereby preventing the impurities inside the acid liquid from affecting the effect of the acid liquid working next time after being used many times, resulting in the situation that the pickling effect on the metal is not significant. The action of the stirring blade 19 can accelerate the fusion of the acid liquid and the chemical substance, thereby shortening the time required for purifying the acid liquid and improving production efficiency. During operation, when the acid liquid has finished standing, the second water pump 21 can be operated to pump the purified acid liquid to the bottom of the descaling machine 12 through the second water pipe 2. After the acid liquid is pumped out, dirt and impurities will remain on the surface of the filter plate 113. At this time, the telescopic rod 24 can be extended first, and then the pull plate 25 can be held and pushed and pulled to drive the scraper 23 to slide inside the U-shaped plate 22. When the scraper 23 slides, it will push the dirt and impurities on the surface of the filter plate 113 to move together. In this step, the dirt and impurities at the filter plate 113 can be cleaned through the action of the scraper 23, so as to prevent the dirt and impurities from remaining on the surface of the filter plate 113, thereby affecting the next purification of the acid liquid. At the same time, the cleaning work becomes simple and easy, which plays a role in improving The effect of improving the work efficiency of workers is that when working, when the scraper 23 pushes the dirt and impurities to a certain position, the second handle 31 can be held and pulled first, so as to pull the slide plate 3 out of the middle of the descaling machine 12 to form an opening on the side of the descaling machine 12. At this time, the dirt pushed by the scraper 23 can be cleaned out of the descaling machine 12 through the opening. In this step, the dirt can be cleaned by pulling out the slide plate 3 and cooperating with the scraper 23 to improve the efficiency of the cleaning work. The rubber strip 33 can have a certain sealing effect, thereby preventing the acid inside the descaling machine 12 from easily flowing out of the connection gap between the slide plate 3 and the descaling machine 12. The sponge ring 32 can provide a more comfortable texture for the worker's hand when the worker pulls out the slide plate 3. When working,When the purified acid enters the bottom of the descaling machine 12, the heating pump 4 will generate heat and heat up the acid at the bottom of the descaling machine 12. The heat-conducting column 41 can better dissipate the heat generated by the heating pump 4. The hollow copper tube 42 can protect the heat-conducting column 41 from being corroded by the acid. At the same time, because the material of the hollow copper tube 42 has a good thermal conductivity, the situation in which the hollow copper tube 42 may block the heat emitted by the heat-conducting column 41 can be reduced. When the temperature of the acid rises to a certain level, the third water pipe 43 can guide the acid into the pickling tank 1, so that the acid can pickle the metal. In this step, the acid solution can be heated by the cooperation of the heating pump 4 and the heat-conducting column 41, so as to accelerate the chemical reaction of the acid solution, make the hydrogen ions in the acid solution more active, and more easily react with the oxides and dirt on the metal surface, thereby accelerating the pickling speed and improving the pickling effect. When working, when the heating pump 4 heats the acid solution, the temperature inside the descaling machine 12 will rise at the same time and produce a temperature difference with the outside, so that a certain amount of water vapor is easily generated. At this time, the fan blades 53 can be driven to rotate by the fixed-point rotating shaft 52, so as to form a certain wind force, which can heat the inside of the descaling machine 12. Ventilation and heat dissipation, discharge the water vapor inside the descaling machine 12 to the outside. This step can reduce the effect of water vapor inside the descaling machine 12 through the exhaust fan 5, so as to prevent the water vapor from dripping into the acid solution under long-term accumulation, thereby affecting the concentration of the acid solution and reducing the pickling effect. When working, when the exhaust fan 5 is working, the wind force it generates flows through the valve plate 6, and the valve plate 6 will expand outward under the action of wind pressure, so that the water vapor discharged by the exhaust fan 5 can flow smoothly to the outside. When the exhaust fan 5 is not working, the valve plate 6 will be in a closed state. This step can be achieved through the action of the valve plate 6 When the exhaust fan 5 is not working, it is easy for dust from the outside to float into the descaling machine 12 from the exhaust fan 5, thereby causing the acid inside the descaling machine 12 to be polluted. When working, the situation inside the descaling machine 12 can be observed through the glass observation plate 7. This step allows workers to observe the purification degree of the acid through the glass observation plate 7, so as to judge when to pump the acid to the bottom of the descaling machine 12 for heating. The water level line of the acid that needs to be heated can also be observed through the glass observation plate 7, so as to prevent the water level from exceeding the position of the exhaust fan 5, causing the acid to corrode the exhaust fan 5.
[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A pickling device that facilitates the circulation of acid solution, comprising a pickling tank (1); a first water pipe (11) is connected to the middle of the pickling tank (1); and the characteristics are: The end of the first water pipe (11) is connected to a descaling machine (12); the end of the first water pipe (11) is connected to a first water pump (13); the middle of the descaling machine (12) is connected to a hollow rotating shaft (15); the top of the hollow rotating shaft (15) is connected to a servo motor (14); the middle of the hollow rotating shaft (15) is connected to a shaft door (16); the side of the shaft door (16) is connected to a plurality of sets of leaves (17); the side of the shaft door (16) is fixedly connected to a first handle (18); the middle of the hollow rotating shaft (15) is fixedly connected to a plurality of stirring blades (19); the end of the hollow rotating shaft (15) is provided with a plurality of discharge ports (111); the middle of the descaling machine (12) is fixedly connected to a layer plate (112); the middle of the descaling machine (12) is fixedly connected to a filter plate (113).
2. A pickling device that facilitates acid solution recycling according to claim 1, characterized in that: The descaling machine (12) is connected to a second water pipe (2) on its side; the end of the second water pipe (2) is connected to a second water pump (21); the other end of the second water pipe (2) is connected to the middle of the descaling machine (12); a plurality of groups of U-shaped plates (22) are fixedly connected to the inner wall of the descaling machine (12); a scraper (23) is slidably connected to the middle of each of the U-shaped plates (22); a plurality of groups of telescopic rods (24) are fixedly connected to the middle of each of the scrapers (23); and a pull plate (25) is fixedly connected to the end of each of the telescopic rods (24).
3. A pickling device that facilitates acid solution recycling according to claim 1, characterized in that: The descaling machine (12) is slidably connected to a slide plate (3) on the side; a second handle (31) is fixedly connected to the end of the slide plate (3); a sponge ring (32) is connected to the middle of the second handle (31); and a plurality of groups of rubber strips (33) are fixedly connected to the side of the descaling machine (12).
4. A pickling device that facilitates acid solution recycling according to claim 1, characterized in that: The bottom of the descaling machine (12) is fixedly connected to a plurality of heating pumps (4); the middle of the heating pumps (4) are fixedly connected to heat-conducting columns (41); the middle of the heating pumps (4) are fixedly connected to hollow copper tubes (42); the side of the descaling machine (12) is connected to a third water pipe (43); the end of the third water pipe (43) is connected to the middle of the pickling tank (1).
5. A pickling device that facilitates acid solution recycling according to claim 1, characterized in that: The descaling machine (12) has multiple sets of exhaust fans (5) fixedly connected to the side thereof; the exhaust fans (5) are all fixedly connected to a cross support frame (51) in the middle thereof; a fixed-point rotating shaft (52) is rotatably connected to the middle thereof; and multiple sets of fan blades (53) are fixedly connected to the middle thereof.
6. A pickling device that facilitates acid solution recycling according to claim 5, characterized in that: The ends of the exhaust fans (5) are all fixedly connected with valve plates (6).
7. A pickling device that facilitates acid solution recycling according to claim 1, characterized in that: A glass observation panel (7) is provided in the middle of the descaling machine (12).