A galvanizing solution air stirrer

Abstract

This utility model relates to the technical field of air mixers and discloses an air mixer for galvanizing chemicals, including a tank. The bottom of the tank has an external air pipe connected to an external air compressor at one end. The other end of the external air pipe extends into the tank and is welded to a distribution pipe. Multiple first exhaust pipes are welded to the outer circumference of the distribution pipe. A second exhaust pipe is integrally formed at the other end of each of the first and second exhaust pipes. Two sets of symmetrical air outlets are provided at the bottom of both the first and second exhaust pipes. Each air outlet set includes multiple air ports. This utility model, through the arrangement of the first and second exhaust pipes and the air ports, causes the surrounding chemicals to flow, and the continuous emergence and rise of air bubbles allows the chemicals in different locations within the tank to be fully mixed, ensuring the stability of the galvanizing chemicals' composition. Furthermore, the impact of the emerging air bubbles on the water flow is reduced, minimizing waste caused by splashing and pollution to the surrounding environment.

Description

Technical Field

[0001] This utility model relates to the technical field of air mixers, and more specifically to an air mixer for galvanizing chemicals. Background Technology

[0002] In the galvanizing process, equipping the chemical solution with an air mixer is an efficient and reliable method. It injects compressed air into the chemical solution and uses the rising motion of the air bubbles to drive the chemical solution to circulate, thereby achieving the core objectives of uniform mixing, preventing sedimentation, and improving the coating quality.

[0003] Galvanizing solutions are usually prepared in a spare tank or preparation vessel, and then transferred to the electroplating tank for use. This is mainly to ensure that the solution is uniform and pure, and to complete the necessary pretreatment. An air mixer is also used during the solution preparation process.

[0004] Currently, most commercially available air mixers have their air outlet pipes directly inserted into or connected to the bottom of the tank. During the mixing process, the compressed air has high kinetic energy, which can easily cause the prepared medicine to be subjected to excessive impact force, causing it to be ejected from the spare tank or preparation tank, resulting in medicine waste and pollution of the operating environment. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a galvanized chemical aerator air mixer to solve the problem that the compressed air has high kinetic energy, which can easily cause the prepared chemical solution to be subjected to excessive impact force, thus causing it to be rushed out of the spare tank or preparation tank, resulting in chemical waste and pollution of the operating environment.

[0006] This utility model provides the following technical solution: a galvanizing chemical aerator air mixer, including a tank body. The bottom of the tank body is provided with an external air pipe connected to an external air compressor at one end. The other end of the external air pipe extends into the tank body and is welded with an air distribution pipe. Multiple first exhaust pipes are welded to the outer circumference of the air distribution pipe. The other end of the multiple first exhaust pipes is integrally formed with a second exhaust pipe. The bottom of both the first exhaust pipe and the second exhaust pipe is provided with two sets of symmetrical air outlet groups. Each set of air outlet groups includes multiple air outlets.

[0007] As a further embodiment of this utility model, a floating tube is placed inside the tank, and a perforated plate is welded to the bottom of the floating tube.

[0008] As a further embodiment of this utility model, the perforation plate is concave arc-shaped.

[0009] As a further embodiment of this utility model, a motor is fixed to the top of the tank by bolts, and the output shaft of the motor is fixed to a rotating shaft by a coupling. One end of the rotating shaft is inserted into the tank and rotatably connected to the bottom of the tank. A stirring rack is fixed to the outer circumference of the rotating shaft by bolts.

[0010] As a further embodiment of this invention, the stirring rack is located between the perforated plate and the gas distribution pipe, and the rotation axis of the stirring rack is offset from the center line of the tank.

[0011] As a further embodiment of this utility model, the top of the tank is provided with a feeding port and an exhaust port. The feeding port is used for adding materials, and the exhaust port is used for depressurizing the tank.

[0012] As a further embodiment of this utility model, a tapered strip is welded to the bottom inner wall of the second exhaust pipe, and the bottom of the tapered strip is flush with the bottom of the air outlet.

[0013] As a further embodiment of this invention, the bottom inner wall of the first exhaust pipe is flush with the bottom of the air outlet on the first exhaust pipe.

[0014] As a further embodiment of this utility model, a one-way valve is provided at one end of the external air pipe that connects to the tank body, and the one-way valve is located outside the tank body.

[0015] The technical effects and advantages of this utility model are as follows: 1. The present invention, through the setting of the first exhaust pipe, the second exhaust pipe and the air outlet, will drive the surrounding chemical solution to flow, and the continuous emergence and rise of the bubble group will allow the chemical solution in different positions in the tank to be fully mixed, ensuring the stability of the composition of the galvanizing chemical solution. In addition, the impact of the emerging bubbles on the water flow is reduced, which reduces the waste of chemical solution caused by splashing and the pollution to the surrounding environment.

[0016] 2. This utility model, by incorporating a floating tube and a perforated plate, can suppress violent turbulence on the surface of the medicine, reduce splashing caused by the large accumulation and rising of bubbles, and make the entire stirring process more stable and efficient.

[0017] 3. By incorporating a stirring rack, the distance between the stirring rack and the inner wall of the tank changes continuously as the rack rotates, effectively breaking the inertia of the liquid flow in a fixed area and promoting a more complex convection circulation of the liquid at different depths and positions. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the tank of this utility model.

[0020] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure of the gas distribution tube.

[0021] Figure 4 This utility model Figure 3 A cross-sectional view of the first exhaust pipe.

[0022] The attached diagram is labeled as follows: 1. Tank body; 2. Feed port; 3. Motor; 4. Exhaust port; 5. External air pipe; 6. Air distribution pipe; 7. Rotating shaft; 8. Stirring rack; 9. Floating pipe; 10. Leakage plate; 11. One-way valve; 12. First exhaust pipe; 13. Air outlet; 14. Second exhaust pipe; 15. Conical bar. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-4 This utility model provides a galvanizing chemical aerator air mixer, including a tank body 1. The bottom of the tank body 1 is provided with an external air pipe 5 connected to an external air compressor at one end. The other end of the external air pipe 5 extends into the tank body 1 and is welded with an air distribution pipe 6. Multiple first exhaust pipes 12 are welded to the outer circumference of the air distribution pipe 6. The other end of the multiple first exhaust pipes 12 is integrally formed with a second exhaust pipe 14. The bottom of the first exhaust pipe 12 and the second exhaust pipe 14 are provided with two sets of symmetrical air outlet groups. Each set of air outlet groups includes multiple air outlets 13. When it is necessary to stir the medicine in the tank 1, start the external air compressor to deliver compressed air from the external air pipe 5 to the air distribution pipe 6, and then distribute it to multiple first exhaust pipes 12 to buffer the pressure of the compressed air. Then, it is further distributed through the second exhaust pipe 14 so that the compressed air can be discharged more evenly from the air outlet 13 at the bottom of the first exhaust pipe 12 and the second exhaust pipe 14. As these bubbles emerge from the vent 13 rise, they cause the surrounding chemicals to flow. The continuous emergence and rise of the bubble clusters creates a continuous stirring force, allowing the chemicals in different locations within the tank 1 to mix thoroughly, preventing sedimentation or uneven concentration, and thus ensuring the stability of the composition of the galvanizing chemicals. At the same time, the impact of the emerging bubbles on the water flow is reduced, making it difficult to spray the medicine too high, thus reducing waste caused by splashing and pollution to the surrounding environment.

[0025] In this utility model, a floating tube 9 is placed inside the tank body 1, and a perforated plate 10 is welded to the bottom of the floating tube 9. The perforated plate 10 is concave arc-shaped. The perforated plate 10 can float up and down with the change of liquid level in the tank 1. When the bubbles rise from the air outlet 13 below, they will first pass through the holes on the perforated plate 10, which can suppress the violent churning of the liquid surface to a certain extent, reduce the splashing of liquid caused by the large accumulation and rise of bubbles, and make the whole stirring process more stable and efficient.

[0026] Furthermore, a motor 3 is bolted to the top of the tank 1, and a rotating shaft 7 is fixed to the output shaft of the motor 3 via a coupling. One end of the rotating shaft 7 is inserted into the tank 1 and rotatably connected to the bottom of the tank 1. A stirring frame 8 is bolted to the outer circumference of the rotating shaft 7. The stirring frame 8 is located between the perforated plate 10 and the gas distribution pipe 6, and the rotating shaft 7 of the stirring frame 8 is offset from the center line of the tank 1. When the motor 3 starts, the rotating shaft 7 drives the stirring rack 8 to rotate eccentrically between the perforated plate 10 and the gas distribution pipe 6. During its rotation, it will have a lateral stirring effect on the rising air bubbles and the surrounding medicine. This eccentric stirring design causes the distance between the stirring rack 8 and the inner wall of the tank 1 to change continuously as the rack rotates, which can effectively break the flow inertia of the medicine in a fixed area and promote the formation of more complex convection circulation of the medicine at different depths and positions. In addition, since the stirring rack 8 is located in the middle of the bubble rising path, the centrifugal force generated by its rotation can also diffuse some of the gathered bubbles toward the edge of the tank 1, avoiding the large accumulation of bubbles in the central area and affecting the uniformity of mixing. It works synergistically with the bubble stirring system at the bottom to ensure that the medicine in the tank is mixed more thoroughly and stably.

[0027] Furthermore, a tapered strip 15 is welded to the bottom inner wall of the second exhaust pipe 14, the bottom of the tapered strip 15 is flush with the bottom of the air outlet 13, and the bottom inner wall of the first exhaust pipe 12 is flush with the bottom of the air outlet 13 on the first exhaust pipe 12. The design of the conical strip 15 being flush with the bottom of the air outlet 13 reduces the resistance when air is discharged, ensuring that bubbles can flow smoothly from the air outlet 13. The structure of the inner wall of the bottom of the first exhaust pipe 12 being flush with the bottom of the air outlet 13 further ensures the flow stability of compressed air in the first exhaust pipe 12, making the state of the bubbles discharged from the first exhaust pipe 12 and the second exhaust pipe 14 more consistent, thereby improving the uniformity and stability of the overall stirring effect.

[0028] One-way valve 11 is provided at the end of the external air pipe 5 that is connected to the tank body 1. The one-way valve 11 is located outside the tank body 1. Its function is to prevent the medicine in the tank body 1 from flowing back when the air compressor stops working or the pressure is abnormal, and to prevent the medicine from flowing back into the external air compressor through the external air pipe 5, causing equipment damage or pollution. The one-way valve 11 only allows compressed air to enter the tank 1 from the external air pipe 5 in one direction, and automatically closes the channel when reverse pressure occurs, effectively ensuring the safety and stability of the entire mixing system and extending the service life of the equipment.

[0029] It should be noted that: the top of the tank 1 is provided with a feeding port 2 and an exhaust port 4. The feeding port 2 is used for adding materials, and the exhaust port 4 is used for depressurizing inside the tank 1. A discharge port (not shown in the figure) is provided on the bottom side of the tank 1. The discharge port is used to discharge the mixed medicine solution from the tank 1. The connection between the external air pipe 5 and the air distribution pipe 6 adopts a sealed welding process to ensure that there is no leakage of compressed air during transmission and to ensure the air pressure stability of the mixing system. The diameters of the first exhaust pipe 12 and the second exhaust pipe 14 have been optimized to maintain a reasonable flow velocity during the flow splitting process. This avoids excessive airflow resistance caused by too small a pipe diameter, and also prevents reduced bubble generation efficiency caused by too large a pipe diameter. The air outlets 13 are evenly distributed in a plum blossom pattern, and the diameter of each air outlet 13 is 0.5 to 1 mm. This design can generate uniformly sized microbubbles while ensuring the air output, further improving the contact efficiency between the bubbles and the medicine. The floating tube 9 is made of corrosion-resistant PP material. Its outer wall is smooth and its density is slightly less than that of the medicine, ensuring that the orifice plate 10 can float smoothly with the liquid level without tilting. The diameter of the holes on the perforated plate 10 is 2-3 mm, and the spacing between the holes is 5-8 mm. By accurately calculating the distribution density of the holes, the bubbles can be fully cut and dispersed when passing through the perforated plate 10, and the resistance to the rise of the bubbles will not be too great due to too many holes. Motor 3 is a variable frequency speed control motor, which can flexibly adjust the speed according to the concentration of the medicine and the stirring requirements. When the concentration of the medicine is high, the speed is increased to enhance the stirring effect, and when the medicine is close to a uniform state, the speed is reduced to save energy. The blades of the stirring rack 8 are designed with a 45-degree angle and the edges of the blades are rounded. During rotation, they can effectively agitate the medicine and reduce the shearing damage to the bubbles, thus ensuring the upward momentum of the bubbles. A mechanical seal is installed at the connection between the rotating shaft 7 and the bearing at the bottom of the tank 1 to prevent the medicine from seeping into the bearing and causing wear, thus extending the service life of the equipment. The feeding port 2 is equipped with a sealing cap, which is opened when adding materials and closed in time after adding materials to prevent external dust and impurities from entering the tank 1; A butterfly valve is installed at the discharge port. The valve can be opened and closed manually or pneumatically to facilitate control of the discharge speed and volume of the medicine.

[0030] The working principle of this utility model: When it is necessary to stir the medicine in the tank 1, start the external air compressor to deliver compressed air from the external air pipe 5 to the air distribution pipe 6, and then distribute it to multiple first exhaust pipes 12 to buffer the pressure of the compressed air. Then, it is further distributed through the second exhaust pipe 14 so that the compressed air can be discharged more evenly from the air outlet 13 at the bottom of the first exhaust pipe 12 and the second exhaust pipe 14. As these bubbles emerge from the vent 13 rise, they cause the surrounding liquid to flow. The continuous emergence and rise of the bubble clusters creates a continuous stirring force, allowing the liquid in different locations within the tank 1 to be fully mixed. Meanwhile, the perforated plate 10 can float with the change of liquid level in the tank 1. When the bubbles rise from the lower air outlet 13, they will first pass through the holes on the perforated plate 10, which can suppress the violent churning of the liquid surface to a certain extent and reduce the splashing of the liquid caused by the large accumulation and rise of bubbles.

[0031] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs. The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A galvanizing chemical aerator, comprising a tank (1), characterized in that: The bottom of the tank (1) is provided with an external air pipe (5) that is connected to an external air compressor at one end. The other end of the external air pipe (5) extends into the tank (1) and is welded with a distribution pipe (6). Multiple first exhaust pipes (12) are welded to the outer circumference of the distribution pipe (6). The other end of the multiple first exhaust pipes (12) is integrally formed with a second exhaust pipe (14). The bottom of the first exhaust pipe (12) and the second exhaust pipe (14) are provided with two sets of symmetrical air outlet groups. Each set of air outlet groups includes multiple air outlets (13).

2. The galvanizing chemical aerator air mixer according to claim 1, characterized in that: A floating tube (9) is placed inside the tank (1), and a perforated plate (10) is welded to the bottom of the floating tube (9).

3. The galvanizing chemical aerator air mixer according to claim 2, characterized in that: The perforated plate (10) is concave arc-shaped.

4. The galvanizing chemical agitator according to claim 2, characterized in that: A motor (3) is fixedly connected to the top of the tank (1). The output shaft of the motor (3) is fixed to a rotating shaft (7) via a coupling. One end of the rotating shaft (7) is inserted into the tank (1) and rotatably connected to the bottom of the tank (1). A stirring rack (8) is fixedly connected to the outer circumference of the rotating shaft (7).

5. The galvanizing chemical agitator according to claim 4, characterized in that: The stirring rack (8) is located between the perforated plate (10) and the gas distribution pipe (6), and the rotation axis (7) of the stirring rack (8) is offset from the center line of the tank (1).

6. The galvanizing chemical aerator air mixer according to claim 1, characterized in that: The top of the tank (1) is provided with a feeding port (2) and an exhaust port (4). The feeding port (2) is used for adding materials, and the exhaust port (4) is used for depressurizing inside the tank (1).

7. The galvanizing chemical aerator air mixer according to claim 1, characterized in that: The bottom inner wall of the second exhaust pipe (14) is welded with a tapered strip (15), and the bottom of the tapered strip (15) is flush with the bottom of the air outlet (13).

8. The galvanizing chemical agitator according to claim 7, characterized in that: The bottom inner wall of the first exhaust pipe (12) is flush with the bottom of the air outlet (13) on the first exhaust pipe (12).

9. The air mixer for galvanizing chemicals according to claim 1, characterized in that: One end of the external air pipe (5) connected to the tank (1) is provided with a one-way valve (11), which is located outside the tank (1).

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