Automobile coating electrophoresis wastewater pretreatment system

Abstract

The invention relates to the technical field of wastewater treatment, and particularly discloses an automobile coating electrophoresis wastewater pretreatment system which comprises a stirring tank, a fixing frame is fixedly connected to the inner wall of the upper side of the stirring tank, an aeration mechanism is arranged at the lower end of the fixing frame and used for rapidly diffusing chemicals, and a stirring mechanism is further arranged at the lower end of the fixing frame. The stirring mechanism is used for accelerating mixing of chemicals and wastewater, a driving mechanism is arranged at the upper end of the fixing frame and used for driving the aeration mechanism and the stirring mechanism to operate at the same time, the aeration mechanism comprises a transmission rod and an aeration head, and the transmission rod is rotationally connected into the fixing frame. The aeration mechanism and the stirring mechanism are driven by the driving mechanism to operate, then a medicament can be preliminarily and rapidly diffused through the operation of the aeration mechanism, and then the diffusion of the medicament can be further accelerated through the stirring mechanism, so that the problem that the medicament is slowly diffused due to the overlarge area of the neutralization tank is solved; this limits the problem of rapid and effective mixing of the neutralizer with the wastewater.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a pretreatment system for automobile painting electrophoresis wastewater. Background Art

[0002] Electrophoretic coating is a surface treatment technology widely used in the automotive industry. It forms a protective layer on the metal surface to enhance the corrosion resistance, appearance and texture of the car. However, this process produces wastewater containing water-soluble resins, pigments, fillers, co-solvents (such as esters, ketones, acids) and a small amount of heavy metal ions, which pose a potential threat to the environment. Therefore, it is necessary to purify these wastewaters.

[0003] The pretreatment of electrophoresis wastewater aims to reduce the burden of subsequent treatment stages, reduce the concentration of pollutants through preliminary treatment, and improve the efficiency of the entire treatment system. The pretreatment system mainly includes steps such as neutralization, sedimentation and filtration to remove impurities such as oil, rust and sludge.

[0004] During the neutralization treatment stage, wastewater is introduced into a neutralization tank and a neutralizer with a pH value between 8 and 9 is added; however, the current neutralization tank area is too large, resulting in slow diffusion of the agent, which limits the rapid and effective mixing of the neutralizer and wastewater, thereby affecting the neutralization effect and the efficiency of the entire pretreatment system. Summary of the invention

[0005] The purpose of the present invention is to provide a pretreatment system for automobile painting electrophoresis wastewater to solve the problem in the prior art that the neutralization tank area is too large, resulting in slow diffusion of the reagent, which limits the rapid and effective mixing of the neutralizer and the wastewater.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A pretreatment system for automobile painting electrophoresis wastewater comprises a stirring tank, wherein a fixing frame is fixedly connected to the inner wall on the upper side of the stirring tank, an aeration mechanism is arranged at the lower end of the fixing frame, and the aeration mechanism is used for rapid diffusion of a reagent, a stirring mechanism is also arranged at the lower end of the fixing frame, and the stirring mechanism is used for accelerating the mixing of the reagent and the wastewater, and a driving mechanism is arranged at the upper end of the fixing frame, and the driving mechanism is used for simultaneously driving the aeration mechanism and the stirring mechanism to operate.

[0008] Preferably: the aeration mechanism includes a transmission rod and an aeration head, the transmission rod is rotatably connected inside the fixed frame, the lower end of the transmission rod is fixedly connected to the mounting rod, the upper end of the mounting rod is equidistantly fixedly connected to the aeration head, a first air duct is opened inside the transmission rod, a second air duct is opened inside the mounting rod, and the first air duct is communicated with the second air duct.

[0009] Preferably, the stirring mechanism comprises a stirring blade and a connecting frame, the side wall of the transmission rod is fixedly connected to the connecting frame, one end of the connecting frame away from the transmission rod is rotatably connected to a rotating shaft, and the lower end of the rotating shaft is fixedly connected to a gear.

[0010] Preferably: a rotating rod is rotatably connected inside the connecting frame, the rotating rod is located between the rotating shaft and the transmission rod, the rotating shaft located above the connecting frame and the rotating rod are transmission connected via a pulley assembly, the side wall of the rotating rod is slidably connected to a first sleeve, and the side wall below the first sleeve is fixedly connected to stirring blades at equal distances.

[0011] Preferably, a gear ring is fixedly connected to the inner wall of the stirring tank, and the gear ring is meshed with the gear.

[0012] Preferably: an adjustment mechanism is also provided inside the stirring tank, and the adjustment mechanism is used to adjust the distance between the stirring blade and the bottom end of the stirring tank, and the adjustment mechanism includes a second sleeve and a roller, and the side wall of the transmission rod is slidably connected to the second sleeve, and the side walls on both sides of the second sleeve are fixedly connected to connecting rods, and the end of the connecting rod away from the second sleeve is rotatably connected to the roller, and the connecting rod located above the stirring blade is fixedly connected to the third sleeve, and the interior of the third sleeve is rotatably connected to the outer wall of the first sleeve.

[0013] Preferably, a guide rail is fixedly connected inside the stirring tank, and the upper end surface of the guide rail is evenly spaced with raised portions and recessed portions, and the rollers located on both sides of the second sleeve are located at the upper end of the guide rail and are in close contact with each other.

[0014] Preferably: the driving mechanism includes a motor and a reduction gear box, the upper end of the fixing frame is fixedly connected to the motor and the reduction gear box, the upper end of the transmission rod passes through the upper end of the reduction gear box, and the transmission rod is connected to the output shaft end of the motor through the reduction gear box.

[0015] Preferably, a water inlet pipe is fixedly connected to the side wall of the stirring tank.

[0016] Preferably, a flocculation tank, a sedimentation tank and a filtration tank are sequentially arranged on the left side of the stirring tank, and a through pipe is connected between the stirring tank and the flocculation tank, between the flocculation tank and the sedimentation tank, and between the sedimentation tank and the filtration tank, and a water pump is arranged on the through pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The transmission rod, the mounting rod, the aeration head and the driving mechanism provided in the present invention cooperate with each other, and the driving mechanism drives the transmission rod to rotate, thereby driving the aeration head fixed on the mounting rod to move, and continuously supplying air to the first air channel in the transmission rod through the outside, so that the gas is discharged into the sewage through the aeration head, thereby achieving the effect of promoting the flow of sewage and accelerating the diffusion of the agent.

[0019] 2. In the present invention, the connecting frame, rotating shaft, gear, rotating rod, pulley assembly, first sleeve, stirring blade and gear ring cooperate with each other, so that the connecting frame moves while the transmission rod rotates, thereby driving the gear to rotate. Since the rotating shaft and the rotating rod are connected through the pulley assembly, the rotating rod is driven to rotate, and then the first sleeve is driven to rotate, thereby driving the stirring blade to rotate, and the stirring blade rotates around the transmission rod, thereby further accelerating the effect of drug diffusion.

[0020] 3. The present invention realizes that the transmission rod drives the second sleeve to rotate synchronously when it rotates through the mutual cooperation of the second sleeve, connecting rod, roller, third sleeve and guide rail; this action further pulls the connecting rod and roller to move along the guide rail. Since the roller is located above the guide rail and is affected by the weight of the roller, connecting rod, second sleeve and third sleeve, the third sleeve is able to reciprocate up and down. This reciprocating motion in turn drives the first sleeve to move up and down, driving the stirring blades to move up and down, thereby accelerating the diffusion process of the agent in the stirring tank. This design effectively improves the stirring efficiency and promotes the uniform distribution of the agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall main structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the top plan structure of the stirring tank of the present invention;

[0023] Figure 3 This is a schematic diagram of the main cross-sectional structure of the stirring tank of the present invention;

[0024] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the aeration mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the explosion structure of the stirring mechanism of the present invention;

[0026] Figure 6 This is a schematic structural diagram of another viewing angle of the main cross-section of the stirring tank of the present invention;

[0027] Figure 7 It is a schematic diagram of the overall structure of the regulating mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the explosion structure of the regulating mechanism of the present invention.

[0029] In the figure: 1, stirring tank; 11, fixing frame; 12, water inlet pipe; 2, aeration mechanism; 21, transmission rod; 211, first airway; 22, mounting rod; 221, second airway; 23, aeration head; 3, stirring mechanism; 31, connecting frame; 32, rotating shaft; 33, gear; 34, rotating rod; 35, pulley assembly; 36, first sleeve; 37, stirring blade; 38, gear ring; 4, adjusting mechanism; 41, second sleeve; 42, connecting rod; 43, roller; 44, third sleeve; 5, driving mechanism; 51, motor; 52, reduction gear box; 6, guide rail; 61, protrusion; 62, recessed portion; 7, flocculation tank; 8, sedimentation tank; 9, filtration tank; 10, through pipe; 101, water pump. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Reference Figure 1-Figure 8 As shown, the present invention provides a pretreatment system for automobile painting electrophoresis wastewater, including a stirring tank 1, a fixing frame 11 is fixedly connected to the inner wall of the upper side of the stirring tank 1, an aeration mechanism 2 is arranged at the lower end of the fixing frame 11, the aeration mechanism 2 is used for rapid diffusion of the agent, a stirring mechanism 3 is also arranged at the lower end of the fixing frame 11, the stirring mechanism 3 is used for accelerating the mixing of the agent and the wastewater, a driving mechanism 5 is arranged at the upper end of the fixing frame 11, the driving mechanism 5 is used for driving the aeration mechanism 2 and the stirring mechanism 3 to operate simultaneously; when working, the aeration mechanism 2 and the stirring mechanism 3 are driven to operate by the driving mechanism 5, and then the agent can be initially rapidly diffused by the operation of the aeration mechanism 2, and then the diffusion of the agent can be further accelerated by the stirring mechanism 3, thereby solving the problem that the neutralization tank area is too large, resulting in slow diffusion of the agent, which limits the rapid and effective mixing of the neutralizer and the wastewater.

[0032] In a further embodiment, referring to Figure 3-Figure 4 The aeration mechanism 2 includes a transmission rod 21 and an aeration head 23. The transmission rod 21 is rotatably connected inside the fixed frame 11. The lower end of the transmission rod 21 is fixedly connected to the mounting rod 22. The upper end of the mounting rod 22 is equidistantly fixedly connected to the aeration head 23. A first air channel 211 is opened inside the transmission rod 21, and a second air channel 221 is opened inside the mounting rod 22. The first air channel 211 is connected to the second air channel 221.

[0033] In this embodiment, the driving mechanism 5 drives the transmission rod 21 to rotate, the rotation of the transmission rod 21 drives the installation rod 22 to rotate with the transmission rod 21 as the axis, the rotation of the installation rod 22 drives the aeration head 23 to move, and at the same time, the outside world continuously supplies air to the first air channel 211 in the transmission rod 21, so that the gas is discharged into the sewage through the aeration head 23, thereby achieving the effect of promoting the flow of sewage and accelerating the diffusion of the agent.

[0034] In a further embodiment, referring to Figure 5-Figure 6 The stirring mechanism 3 includes a stirring blade 37 and a connecting frame 31. The connecting frame 31 is fixedly connected to the side wall of the transmission rod 21. The end of the connecting frame 31 away from the transmission rod 21 is rotatably connected to the rotating shaft 32. The lower end of the rotating shaft 32 is fixedly connected to a gear 33. The inside of the connecting frame 31 is rotatably connected to a rotating rod 34, which is located between the rotating shaft 32 and the transmission rod 21. The rotating shaft 32 located above the connecting frame 31 and the rotating rod 34 are connected by a pulley assembly 35. The side wall of the rotating rod 34 is slidably connected to a first sleeve 36, and the side wall below the first sleeve 36 is equidistantly fixedly connected to stirring blades 37. The inner wall of the stirring tank 1 is fixedly connected to a gear ring 38, and the gear ring 38 and the gear 33 are meshed with each other.

[0035] In this embodiment, the driving mechanism 5 drives the transmission rod 21 to rotate, the rotation of the transmission rod 21 drives the connecting frame 31 to move, the movement of the connecting frame 31 drives the rotating shaft 32 to move, and the gear 33 and the ring gear 38 are meshed with each other, thereby driving the gear 33 to rotate, and the rotating gear 33 drives the rotating shaft 32 to rotate. Since the rotating shaft 32 and the rotating rod 34 are connected by the pulley assembly 35, the rotating rod 34 is driven to rotate, and the rotation of the rotating rod 34 drives the first sleeve 36 to rotate. The rotation of the first sleeve 36 drives the stirring blade 37 to rotate with the rotating rod 34 as the axis. At the same time, the stirring blade 37 rotates around the transmission rod 21, thereby achieving a stirring effect, further accelerating the diffusion of the medicine.

[0036] In a further embodiment, referring to Figure 7-Figure 8 An adjusting mechanism 4 is also provided inside the stirring pool 1, and the adjusting mechanism 4 is used to adjust the distance between the stirring blade 37 and the bottom end of the stirring pool 1. The adjusting mechanism 4 includes a second sleeve 41 and a roller 43. The side wall of the transmission rod 21 is slidably connected to the second sleeve 41, and the side walls on both sides of the second sleeve 41 are fixedly connected to connecting rods 42. The end of the connecting rod 42 away from the second sleeve 41 is rotatably connected to the roller 43. The connecting rod 42 located above the stirring blade 37 is fixedly connected to the third sleeve 44, and the interior of the third sleeve 44 is rotatably connected to the outer wall of the first sleeve 36. A guide rail 6 is fixedly connected inside the stirring pool 1, and the upper end surface of the guide rail 6 is evenly spaced with protrusions 61 and recesses 62. The rollers 43 located on both sides of the second sleeve 41 are located at the upper end of the guide rail 6 and are in close contact with each other.

[0037] In this embodiment, since the upper end of the guide rail 6 is evenly spaced with raised portions 61 and recessed portions 62, and the rollers 43 on both sides of the second sleeve 41 act on the raised portions 61 or the recessed portions 62 at the same time, the second sleeve 41 is driven to rotate by the rotation of the transmission rod 21, the second sleeve 41 is driven to rotate by the rotation of the second sleeve 41, the second connecting rod 42 is driven to move by the movement of the second connecting rod 42, and the rollers 43 are driven to move by the movement of the second connecting rod 42, so that the rollers 43 act on the raised portions 61 and the recessed portions 62 in sequence. When the rollers 43 act on the recessed portions 62, the rollers 43 are driven by the rollers 43. Due to the weight of the wheel 43, the connecting rod 42, the second sleeve 41 and the third sleeve 44, the third sleeve 44 is able to move downward. When the roller 43 acts on the protrusion 61, the third sleeve 44 moves upward, and then the third sleeve 44 performs up and down reciprocating motion. This reciprocating motion drives the first sleeve 36 to move up and down, and drives the stirring blades 37 to move up and down, thereby accelerating the diffusion process of the agent in the stirring tank 1. This design effectively improves the stirring efficiency and promotes the uniform distribution of the agent.

[0038] In a further embodiment, referring to Figure 7 The driving mechanism 5 includes a motor 51 and a reduction gear box 33. The upper end of the fixed frame 11 is fixedly connected to the motor 51 and the reduction gear box 33. The upper end of the transmission rod 21 passes through the upper end of the reduction gear box 33. The transmission rod 21 and the output shaft end of the motor 51 are connected through the reduction gear box 33.

[0039] In this embodiment, the driving motor 51 is started to cooperate with the gear box 33 to drive the transmission rod 21 to rotate, thereby providing power for the transmission rod 21 to rotate.

[0040] In a further embodiment, referring to Figure 2 A water inlet pipe 12 is fixedly connected to the side wall of the stirring tank 1.

[0041] In this embodiment, since the connection between the water inlet pipe 12 and the stirring tank 1 is designed to be a tangent shape, when the sewage flows into the stirring tank 1 through the water inlet pipe 12, the water flow will form a spiral flow pattern. This spiral flow helps the reagent pre-added to the stirring tank 1 to mix quickly with the sewage, thereby significantly improving the neutralization effect, and then enhancing the treatment efficiency of the entire pretreatment system. This design optimizes the water flow dynamics, ensures sufficient contact and mixing of the reagent and sewage, and improves the efficiency and effect of the treatment process.

[0042] In a further embodiment, referring to Figure 1 A flocculation tank 7, a sedimentation tank 8 and a filtration tank 9 are sequentially arranged on the left side of the stirring tank 1. A through pipe 10 is connected between the stirring tank 1 and the flocculation tank 7, between the flocculation tank 7 and the sedimentation tank 8, and between the sedimentation tank 8 and the filtration tank 9. A water pump 101 is arranged on the through pipe 10.

[0043] In this embodiment, after neutralization treatment in the stirring tank 1, the wastewater is transported to the flocculation tank 7 through the pipeline and the water pump 101; in the flocculation tank 7, the suspended particles in the wastewater are aggregated into larger clusters, and this process is helpful for the subsequent solid-liquid separation; then, the wastewater flows into the primary sedimentation tank 8, and the solid matter in the wastewater is removed by sedimentation; finally, the wastewater enters the filtration tank 9 for deeper purification and filtration treatment. This continuous treatment process effectively removes pollutants in the wastewater, improves water quality, and ensures the efficiency and effect of wastewater treatment.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pretreatment system for automobile painting electrophoresis wastewater, comprising a stirring tank (1), characterized in that: A fixing frame (11) is fixedly connected to the inner wall of the upper side of the stirring tank (1); an aeration mechanism (2) is arranged at the lower end of the fixing frame (11); the aeration mechanism (2) is used for rapid diffusion of the agent; a stirring mechanism (3) is also arranged at the lower end of the fixing frame (11); the stirring mechanism (3) is used for accelerating the mixing of the agent and the wastewater; a driving mechanism (5) is arranged at the upper end of the fixing frame (11); the driving mechanism (5) is used for simultaneously driving the aeration mechanism (2) and the stirring mechanism (3) to operate.

2. The automobile painting electrophoresis wastewater pretreatment system according to claim 1 is characterized by: The aeration mechanism (2) comprises a transmission rod (21) and an aeration head (23); the transmission rod (21) is rotatably connected inside the fixed frame (11); the lower end of the transmission rod (21) is fixedly connected to a mounting rod (22); the upper end of the mounting rod (22) is equidistantly fixedly connected to the aeration head (23); a first air passage (211) is provided inside the transmission rod (21); a second air passage (221) is provided inside the mounting rod (22); and the first air passage (211) is communicated with the second air passage (221).

3. The automobile painting electrophoresis wastewater pretreatment system according to claim 2 is characterized by: The stirring mechanism (3) comprises a stirring blade (37) and a connecting frame (31); the connecting frame (31) is fixedly connected to the side wall of the transmission rod (21); one end of the connecting frame (31) away from the transmission rod (21) is rotatably connected to a rotating shaft (32); and a gear (33) is fixedly connected to the lower end of the rotating shaft (32).

4. The automobile painting electrophoresis wastewater pretreatment system according to claim 3 is characterized by: A rotating rod (34) is rotatably connected inside the connecting frame (31), and the rotating rod (34) is located between the rotating shaft (32) and the transmission rod (21). The rotating shaft (32) located above the connecting frame (31) and the rotating rod (34) are transmission-connected via a pulley assembly (35). A first sleeve (36) is slidably connected to the side wall of the rotating rod (34), and a stirring blade (37) is fixedly connected to the side wall below the first sleeve (36) at an equidistant distance.

5. The automobile painting electrophoresis wastewater pretreatment system according to claim 3 is characterized by: A gear ring (38) is fixedly connected to the inner wall of the stirring tank (1), and the gear ring (38) and the gear (33) are meshed with each other.

6. The automobile painting electrophoresis wastewater pretreatment system according to claim 2 is characterized by: The stirring tank (1) is also provided with an adjusting mechanism (4) inside. The adjusting mechanism (4) is used to adjust the distance between the stirring blade (37) and the bottom end of the stirring tank (1). The adjusting mechanism (4) includes a second sleeve (41) and a roller (43). The side wall of the transmission rod (21) is slidably connected to the second sleeve (41). Both side walls of the second sleeve (41) are fixedly connected to connecting rods (42). One end of the connecting rod (42) away from the second sleeve (41) is rotatably connected to the roller (43). The connecting rod (42) located above the stirring blade (37) is fixedly connected to a third sleeve (44). The interior of the third sleeve (44) is rotatably connected to the outer wall of the first sleeve (36).

7. The automobile painting electrophoresis wastewater pretreatment system according to claim 6 is characterized by: A guide rail (6) is fixedly connected inside the stirring tank (1), and the upper end surface of the guide rail (6) is evenly spaced with raised portions (61) and recessed portions (62). The rollers (43) located on both sides of the second sleeve (41) are located at the upper end of the guide rail (6) and are in close contact with each other.

8. The automobile painting electrophoresis wastewater pretreatment system according to claim 2 is characterized by: The driving mechanism (5) comprises a motor (51) and a reduction gear box (33); the upper end of the fixing frame (11) is fixedly connected to the motor (51) and the reduction gear box (33); the upper end of the transmission rod (21) passes through the upper end of the reduction gear box (33); and the transmission rod (21) is transmission-connected to the output shaft end of the motor (51) via the reduction gear box (33).

9. The automobile painting electrophoresis wastewater pretreatment system according to claim 1 is characterized by: A water inlet pipe (12) is fixedly connected to the side wall of the stirring tank (1).

10. The automobile painting electrophoresis wastewater pretreatment system according to claim 1, characterized in that: A flocculation tank (7), a sedimentation tank (8) and a filtration tank (9) are sequentially arranged on the left side of the stirring tank (1); a through pipe (10) is connected between the stirring tank (1) and the flocculation tank (7), between the flocculation tank (7) and the sedimentation tank (8), and between the sedimentation tank (8) and the filtration tank (9); and a water pump (101) is arranged on the through pipe (10).

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