A hot galvanizing pickling waste acid treatment device

Abstract

The utility model discloses a kind of hot galvanizing pickling waste acid treatment equipment, including leakage-proof tray, the support frame is welded and installed in the inside of leakage-proof tray, the annular of the support frame is welded and installed with acid-resistant storage tank body, the inside of the acid-resistant storage tank body is welded and installed with the inner support frame supporting its inside, three stirring mechanisms for stirring its inside are evenly distributed and installed in the inside of the acid-resistant storage tank body by bolt, the inside of the acid-resistant storage tank body upper end is welded and installed with the spraying mechanism for flushing its inside, the lower end of the acid-resistant storage tank body is welded and installed with the bottom flange for its stirring bottom, the bottom flange lower surface is installed with the electric butterfly valve for the discharge of acid-resistant storage tank body by bolt.The equipment solves the problems of insufficient leakage-proof design, poor structural stability, insufficient stirring, lack of cleaning measures in the prior art, has the advantages of leakage-proof, structural stability, sufficient stirring, high degree of automation and easy to clean and overhaul.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection engineering and hazardous waste treatment, and in particular to a hot-dip galvanizing pickling waste acid treatment equipment. Background Technology

[0002] During the hot-dip galvanizing process, the pickling step generates a large amount of waste acid, which is complex in composition and highly corrosive. Direct discharge of this acid not only causes environmental pollution but also wastes recyclable resources. Therefore, the application of waste acid treatment equipment is crucial.

[0003] Existing hot-dip galvanizing pickling waste acid treatment equipment suffers from numerous problems in practical use. Some equipment lacks adequate leak-proof design, posing a serious threat to the surrounding environment and operator safety should a waste acid leak occur. Other equipment exhibits poor structural stability, unable to withstand the pressure of the waste acid, and is prone to deformation or even damage. Regarding agitation, existing equipment cannot effectively prevent the precipitation of solid particles in the waste acid, leading to excessively high local concentrations, exacerbating tank corrosion, and causing crystallization that can clog pipes and affect waste discharge. Furthermore, most equipment lacks effective cleaning measures, allowing residual waste acid to crystallize during subsequent fillings, reducing treatment efficiency and increasing maintenance costs. Therefore, a hot-dip galvanizing pickling waste acid treatment device is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the above problems by proposing a hot-dip galvanizing pickling waste acid treatment equipment that is leak-proof, structurally stable, fully agitated, highly automated, and easy to clean and maintain.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot-dip galvanizing pickling waste acid treatment device, comprising a leak-proof tray, a support frame welded and installed inside the leak-proof tray, an acid-resistant storage tank welded and installed inside the ring of the support frame, an inner support frame welded and installed inside the acid-resistant storage tank, three stirring mechanisms for stirring the interior of the acid-resistant storage tank evenly distributed by bolts, a spray mechanism for rinsing the interior of the acid-resistant storage tank welded and installed at the upper end of the interior of the acid-resistant storage tank, a bottom flange for stirring the bottom of the acid-resistant storage tank welded and installed at the lower end of the acid-resistant storage tank, an electric butterfly valve for discharging the acid-resistant storage tank by bolts installed on the lower surface of the bottom flange, a maintenance interface welded and installed at the center of the upper surface of the acid-resistant storage tank, a maintenance cover installed on the surface of the maintenance interface by screws, an inlet pipe welded and installed on the upper surface of the acid-resistant storage tank near the maintenance interface, a ladder welded and installed on the outer side of the acid-resistant storage tank, and a control box welded and installed on the outer side of the acid-resistant storage tank near the middle of the ladder.

[0006] Preferably, the stirring mechanism includes three No. 1 geared motors bolted into through holes on the upper surface of the acid-resistant storage tank; a stirring rod welded to the lower end of the rotating shaft of the No. 1 geared motor and driven to rotate by it; three three-bladed stirring blades evenly distributed and welded to the stirring rod for stirring; and three connecting rods movably connected between the stirring rod and the inner support frame for stabilizing the stirring rod.

[0007] Preferably, the spraying mechanism includes a spray pipe welded to the inner wall of the acid-resistant storage tank near the upper end; and a water pump fixedly connected to the water inlet of the spray pipe for pumping water into it.

[0008] Preferably, the surface of the spray pipe is uniformly distributed with multiple nozzles for spraying water into the acid-resistant storage tank.

[0009] Preferably, the bottom flange includes a flange base plate welded to the lower end of the acid-resistant storage tank; a single stirring blade welded to the surface of the rotating shaft inside the flange base plate for stirring the waste liquid inside the flange base plate; and a second geared motor fixedly installed at one end of the flange base plate for driving the rotating shaft inside the flange base plate to rotate.

[0010] The beneficial effects of this utility model are as follows: By setting up this hot-dip galvanizing pickling waste acid treatment equipment, the beneficial effects are as follows:

[0011] Leakage prevention and structural stability: The leak-proof tray can catch leaked waste acid, avoiding environmental pollution and safety hazards; the support frame and internal support frame ensure the acid-resistant storage tank is installed stably, enhances its compressive strength, and prevents deformation.

[0012] Stirring and anti-sedimentation: The stirring mechanism is driven by a No. 1 geared motor to stir the stirring rod and blades to prevent the waste acid from settling in a short time; the single-blade stirring blade of the bottom flange can stir the waste liquid at the bottom of the tank and inside the electric butterfly valve to avoid sedimentation and crystallization that can block the pipes.

[0013] Automation and convenient operation: The control box integrates modules to automatically control the operation of each component; the electric butterfly valve facilitates waste liquid discharge; the inlet pipe facilitates the introduction of waste acid; personnel can climb to the top of the tank via a ladder, open the inspection cover, and use the internal support frame to facilitate personnel climbing and maintenance inside the tank.

[0014] Cleaning and Anti-crystallization: The spraying mechanism can rinse the inside of the tank after the waste liquid is discharged to prevent residual waste liquid from causing crystallization during the next filling. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Appendix Figure 2 This is the utility model Figure 1 Enlarged diagram of part A in the middle;

[0017] Appendix Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0018] Appendix Figure 4 This is the utility model Figure 3 Enlarged diagram of section B;

[0019] Appendix Figure 5 This is the utility model Figure 3 Enlarged diagram of section C.

[0020] Legend: 1. Leak-proof tray; 2. Support frame; 3. Acid-resistant storage tank; 4. Inner support frame; 5. Agitator; 501. No. 1 geared motor; 502. Agitator rod; 503. Three-blade agitator blade; 504. Connecting rod; 6. Spraying mechanism; 601. Spray pipe; 602. Water pump; 7. Bottom flange; 701. Flange base; 702. Single-blade agitator blade; 703. No. 2 geared motor; 8. Electric butterfly valve; 9. Inspection interface; 10. Inspection cover; 11. Liquid inlet; 12. Ladder; 13. Control box. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] See Figure 1-5 As shown in the figure, this embodiment of a hot-dip galvanizing pickling waste acid treatment device includes a leak-proof tray 1. A support frame 2 is welded and installed inside the leak-proof tray 1. An acid-resistant storage tank 3 is welded and installed inside the ring of the support frame 2. An inner support frame 4 is welded and installed inside the acid-resistant storage tank 3 to support its interior. Three stirring mechanisms 5 for stirring its interior are evenly distributed and installed inside the acid-resistant storage tank 3 by bolts. A spray mechanism 6 for rinsing its interior is welded and installed at the upper end of the interior of the acid-resistant storage tank 3. A spray mechanism 6 for rinsing its interior is welded and installed at the lower end of the acid-resistant storage tank 3. The tank is equipped with a bottom flange 7 for stirring the bottom. An electric butterfly valve 8 for discharging material from the acid-resistant storage tank 3 is bolted to the lower surface of the bottom flange 7. An inspection interface 9 is welded to the center of the upper surface of the acid-resistant storage tank 3. An inspection cover 10 is screwed to the surface of the inspection interface 9. An inlet pipe 11 is welded to the upper surface of the acid-resistant storage tank 3 near the inspection interface 9. A ladder 12 is welded to the outside of the acid-resistant storage tank 3. A control box 13 is welded to the outside of the acid-resistant storage tank 3 near the middle of the ladder 12.

[0023] Specifically, the leak-proof tray 1 catches the waste acid that may leak from the equipment, preventing the waste liquid from leaking out and causing environmental pollution or safety hazards, thus playing a role in leak prevention and protection.

[0024] The support frame 2 is welded inside the leak-proof tray 1 to support the acid-resistant storage tank 3, ensuring its stable installation and preventing the acid-resistant storage tank 3 from tilting or collapsing.

[0025] The acid-resistant storage tank has three core containers, which are used to store waste acid from hot-dip galvanizing pickling. The material is acid-resistant to prevent the tank from being corroded by waste acid.

[0026] The inner support frame 4 is welded inside the acid-resistant storage tank 3 to support the tank structure, enhance its compressive strength, prevent the tank from deforming due to internal liquid pressure, and provide hand support for personnel during maintenance, facilitating movement inside the tank.

[0027] The electric butterfly valve 8 is installed on the lower surface of the bottom flange 7 to control the discharge switch of the acid-resistant storage tank 3. The opening degree is electrically adjusted by the control box 13 to facilitate the discharge of waste liquid.

[0028] The inspection interface 9 and the inspection cover 10 are connected. During maintenance, the inspection cover 10 is opened, and personnel can enter the tank through the inspection interface 9 to perform maintenance or troubleshooting.

[0029] The inlet pipe 11 is connected to the hot-dip galvanizing pickling waste acid liquid conveying pipeline, which introduces the waste acid liquid into the acid-resistant storage tank 3;

[0030] Ladder 12 is welded to the outside of the tank to facilitate personnel climbing to the top of the tank for inspection or operation;

[0031] The control box 13 is installed on the outside of the acid-resistant storage tank 3. The integrated circuit control module is used to control the operation of the first geared motor 501, the water pump 602, the second geared motor 703 and the electric butterfly valve 8 to realize the automated operation of the equipment.

[0032] See appendix Figure 1-5 As shown, the stirring mechanism 5 includes three geared motors 501 that are bolted into the through holes on the upper surface of the acid-resistant storage tank 3; a stirring rod 502 that is welded to the lower end of the rotating shaft of the geared motor 501 and driven to rotate by it; three three-bladed stirring blades 503 that are evenly distributed and welded to the stirring rod 502 for stirring; and three connecting rods 504 that are movably connected between the stirring rod 502 and the inner support frame 4 for stabilizing the stirring rod 502.

[0033] Specifically, the No. 1 geared motor 501 is bolted to the upper surface of the acid-resistant storage tank 3, intermittently driving the stirring rod 502 to rotate and providing stirring power; the stirring rod 502 is connected to the rotating shaft of the No. 1 geared motor 501, transmitting rotational power to the three-bladed stirring blades 503; the three-bladed stirring blades 503 are evenly distributed on the stirring rod 502, preventing the waste acid in the acid-resistant storage tank 3 from settling in a short time when rotating; the connecting rod 504 movably connects the stirring rod 502 to the inner support frame 4, stabilizing the stirring rod 502 and preventing shaking or deviation during stirring.

[0034] See appendix Figure 1-4 As shown, the spraying mechanism 6 includes a spray pipe 601 welded to the inner wall of the acid-resistant storage tank 3 near the upper end; and a water pump 602 fixedly connected to the water inlet of the spray pipe 601 for pumping water into it.

[0035] The surface of the spray pipe 601 is uniformly distributed with multiple nozzles for spraying water into the acid-resistant storage tank 3.

[0036] Specifically, the spray pipe 601 is welded to the upper end of the inner wall of the acid-resistant storage tank 3, and the surface is covered with nozzles for spraying water into the tank for rinsing; the water pump 602 is connected to the water supply pipe to pump water into the spray pipe 601 to provide rinsing power. After the waste liquid is discharged, the water pump 602 fills the spray pipe 601 with cleaning water and rinses the inside of the acid-resistant storage tank 3 through the nozzles to prevent residual waste liquid from causing crystallization during the next filling.

[0037] See appendix Figure 1-5 As shown, the bottom flange 7 includes a flange base plate 701 welded to the lower end of the acid-resistant storage tank 3; a single stirring blade 702 welded to the surface of the rotating shaft inside the flange base plate 701 for stirring the waste liquid inside the flange base plate 701; and a second geared motor 703 fixedly installed at one end of the flange base plate 701 for driving the rotating shaft inside the flange base plate 701 to rotate.

[0038] Specifically, the flange base 701 is welded to the lower end of the acid-resistant storage tank 3 and connected to the electric butterfly valve 8 to form a discharge channel; the single-blade agitator 702 is welded to the rotating shaft inside the flange base 701, and when rotating, it agitates the waste liquid at the bottom of the acid-resistant storage tank 3 and inside the electric butterfly valve 8 to prevent sedimentation and crystallization from clogging the pipes; the second geared motor 703 drives the rotating shaft inside the flange base 701, which in turn drives the single-blade agitator 702 to work.

[0039] The operation process of this utility model is as follows: When introducing waste acid, the waste acid is introduced into the acid-resistant storage tank 3 by connecting the hot-dip galvanizing pickling waste acid conveying pipeline through the inlet pipe 11 and opening the pipeline valve.

[0040] When the stirring system is started, the stirring program is set in the control box 13: start the No. 1 geared motor 501, drive the stirring rod 502 and the three-blade stirring blade 503 to rotate. The purpose of stirring is to prevent solid particles in the waste acid from settling, ensure uniform mixing of the liquid, and avoid local high concentrations that could corrode the tank.

[0041] When bottom stirring is used, if the waste acid contains high concentration of precipitates, start the No. 2 geared motor 703 to drive the single-blade stirring blade 702 to rotate, stirring the liquid at the bottom of the tank and near the electric butterfly valve 8 to prevent pipe blockage.

[0042] When discharging waste acid from acid-resistant storage tank 3, stop the liquid inlet and continue stirring to make the concentration of waste acid uniform. Check whether the opening of electric butterfly valve 8 is in the closed state to avoid uncontrolled flow during discharge. Remotely open electric butterfly valve 8 in control box 13, gradually adjust the opening, and observe whether the discharge flow is stable. If the flow drops suddenly, it may be due to bottom sediment blockage. It is necessary to start single-blade agitator blade 702 to assist in discharge.

[0043] When cleaning the acid-resistant storage tank 3, after the waste acid liquid is discharged, close the electric butterfly valve 8, start the water pump 602, pour clean water into the spray pipe 601, and spray water into the inside of the acid-resistant storage tank 3 through the nozzle for rinsing for 5 to 10 minutes until there is no obvious residual waste liquid in the acid-resistant storage tank 3. The stirring mechanism 5 can be started at the same time during rinsing to enhance the cleaning effect and prevent the residual waste liquid from crystallizing.

[0044] During maintenance, after the inside of the tank is dry, open the maintenance cover 10 and personnel enter the tank through the maintenance interface 9 to check the corrosion of components such as the inner support frame 4 and the stirring blades. If any damage is found, replace them in time.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste acid treatment device for hot-dip galvanizing pickling, characterized in that: The system includes a leak-proof tray (1), inside which a support frame (2) is welded and installed. An acid-resistant storage tank (3) is welded and installed within the ring of the support frame (2). An inner support frame (4) is welded and installed inside the acid-resistant storage tank (3). Three stirring mechanisms (5) for stirring the interior are evenly distributed inside the acid-resistant storage tank (3) by bolts. A spray mechanism (6) for rinsing the interior is welded and installed at the upper end of the interior of the acid-resistant storage tank (3). A stirring mechanism for stirring the bottom is welded and installed at the lower end of the acid-resistant storage tank (3). Bottom flange (7), the lower surface of which is bolted to install an electric butterfly valve (8) for discharging acid-resistant storage tank (3), the center of the upper surface of the acid-resistant storage tank (3) is welded to install an inspection interface (9), the surface of the inspection interface (9) is bolted to install an inspection cover (10), the upper surface of the acid-resistant storage tank (3) is welded to install an inlet pipe (11) near the inspection interface (9), the outside of the acid-resistant storage tank (3) is welded to install a ladder (12), and a control box (13) is welded to install near the middle of the ladder (12).

2. The hot-dip galvanizing pickling waste acid treatment equipment according to claim 1, characterized in that: The stirring mechanism (5) includes three geared motors (501) that are bolted into the through holes on the upper surface of the acid-resistant storage tank (3); a stirring rod (502) is welded to the lower end of the rotating shaft of the geared motor (501) and driven to rotate by it; three three-bladed stirring blades (503) are evenly distributed and welded on the stirring rod (502) for stirring; and three connecting rods (504) are movably connected between the stirring rod (502) and the inner support frame (4) for stabilizing the stirring rod (502).

3. The hot-dip galvanizing pickling waste acid treatment equipment according to claim 2, characterized in that: The spraying mechanism (6) includes a spray pipe (601) welded to the inner wall of the acid-resistant storage tank (3) near the upper end; and a water pump (602) fixedly connected to the water inlet of the spray pipe (601) for pumping water into it.

4. The hot-dip galvanizing pickling waste acid treatment equipment according to claim 3, characterized in that: The surface of the spray pipe (601) is uniformly distributed with multiple nozzles for spraying water into the acid-resistant storage tank (3).

5. The hot-dip galvanizing pickling waste acid treatment equipment according to claim 4, characterized in that: The bottom flange (7) includes a flange base plate (701) welded to the lower end of the acid-resistant storage tank (3); a single stirring blade (702) welded to the surface of the rotating shaft inside the flange base plate (701) for stirring the waste liquid inside the flange base plate (701); and a second geared motor (703) fixedly installed at one end of the flange base plate (701) for driving the rotating shaft inside the flange base plate (701) to rotate.

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