Self-adapting skin-feeling paint film preparation wastewater treatment equipment and preparation process

Abstract

The application relates to the technical field of wastewater treatment, and discloses a wastewater treatment equipment for preparing self-adaptive skin-feeling paint film and a preparation process. The wastewater treatment equipment for preparing self-adaptive skin-feeling paint film comprises a gas float box and a chain type scraper, further comprises a rotating drum arranged in the gas float box, both ends of the inner wall of the rotating drum are rotationally connected with fixing discs, the fixing discs are fixedly installed on the inner wall of the gas float box, a drainage plate fixedly connected with the inner wall of the gas float box is arranged on the lower side of the rotating drum, a slag salvaging mechanism and a gas injection mechanism are arranged in the rotating drum. The slag salvaging mechanism extends out of the rotating drum along a specific track, efficiently salvages floating slag, and wastewater flows downward along the drainage plate. When the slag salvaging mechanism rises with the floating slag, the gas injection pipe timely sprays high-pressure airflow to strongly strip residual wastewater on the floating slag. Finally, the floating slag is discharged out of the equipment along the inclined cleaning plate. The process not only greatly reduces the water content of the floating slag, but also skillfully avoids the defect that the traditional filtering structure is easy to be blocked, and realizes efficient and stable wastewater treatment.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device and preparation process for preparing an adaptive skin-feel coating film. Background Technology

[0002] Adaptive skin-feel coatings, as a type of high-performance polymer coating, are highly favored in furniture, electronics, and other fields due to their delicate and soft skin-like texture and excellent wear resistance, stain resistance, and scratch resistance. During their preparation, overspray paint mist generated during the spraying process on the coating substrate surface is absorbed by a water curtain, forming paint sludge particles mainly composed of uncured resin. These particles mix with the wastewater from the water curtain to form sludge-containing wastewater. To meet stringent environmental emission standards, achieving efficient separation of impurities is crucial.

[0003] The density of paint residue particles is slightly greater than that of water (1.05–1.20 g / cm³). 3 Furthermore, due to its strong hydrophobicity and tendency to readily adsorb air bubbles, conventional sedimentation methods struggle to achieve effective separation. Therefore, the industry widely employs air flotation separation equipment for solid-liquid separation. However, existing air flotation equipment typically uses chain scrapers to push the scum layer for separation. During operation, the scrapers inevitably carry a large amount of wastewater, resulting in a persistently high water content in the separated scum, necessitating an additional filtration process.

[0004] Secondary dewatering of scum with high water content not only prolongs the treatment process and significantly increases treatment costs, but also leads to a marked decrease in wastewater treatment efficiency. Furthermore, frequent clogging of the filter cloths or screens used for dewatering drastically increases the frequency of cleaning and maintenance, severely impacting continuous equipment operation and further exacerbating the problem of low wastewater treatment efficiency. This issue has become a critical technical bottleneck that the industry urgently needs to address. Summary of the Invention

[0005] Given the problem that the separated scum has a high water content and requires secondary dehydration, an adaptive skin-feel coating film preparation wastewater treatment device is proposed.

[0006] The purpose is to remove the scum after separation by blowing air to separate the wastewater, and then to separate the wastewater again using non-powered equipment.

[0007] The technical solution of the present invention is a wastewater treatment device for the preparation of adaptive skin-feel coating film, including an air flotation box and a chain scraper, and a rotating drum disposed in the air flotation box. Both ends of the inner wall of the rotating drum are rotatably connected to fixed disks, which are fixedly installed on the inner wall of the air flotation box. A flow guide plate is disposed on the lower side of the rotating drum and fixedly connected to the inner wall of the air flotation box. A cleaning plate is disposed on the side of the rotating drum away from the chain scraper and fixedly connected to the air flotation box. One end of the cleaning plate slides in contact with the outer wall of the rotating drum. A slag removal mechanism and an air jet mechanism are installed inside the rotating drum.

[0008] The slag removal mechanism includes two fixed rings, which are located between two fixed discs and fixedly connected to the end of the inner wall of the rotating drum. Multiple slag removal components are arranged in a ring at equal intervals between the two fixed rings. The slag removal components are movably installed through the rotating drum and are slidably engaged with the fixed rings.

[0009] The jetting mechanism includes multiple arc-shaped plates. The arc-shaped sidewall of the rotating cylinder is provided with through holes that are adapted to the arc-shaped plates. The arc-shaped plates are slidably connected to the fixing ring, and a jetting pipe is installed on the concave side of the arc-shaped plates.

[0010] Guide grooves are provided on opposite sides of the two fixed disks. Each guide groove includes two arc-shaped grooves of different sizes. The two arc-shaped grooves are concentrically arranged with the fixed disks, and a straight groove connects the two arc-shaped grooves. The slag removal component is movably engaged with the guide grooves. A drive unit is installed on the air flotation box, and the drive unit is used to drive the rotating drum to rotate.

[0011] Furthermore, a positioning ring is provided on the side of the two fixed disks that are far apart from each other. The positioning ring is fixedly connected to the inner wall of the rotating cylinder, and the two sides of the fixed disk are in sliding contact with the corresponding positioning ring and fixed ring, respectively.

[0012] Furthermore, the slag removal component includes a connecting rod, on one side of the connecting rod facing the rotating drum, a plurality of slag removal strips are fixedly fixed at equal intervals, the slag removal strips are movably inserted through the rotating drum, the connecting rod is slidably engaged with a groove opened on the side wall of the fixed ring, and both ends of the connecting rod are fixedly connected with guide wheels, the guide wheels are in rolling contact with the inner wall of the guide groove.

[0013] Furthermore, the diversion plate has an arc-shaped structure, and multiple arc-shaped strips are fixedly connected at equal intervals on the concave side wall of the diversion plate, with the slag-removing strip facing one side of the diversion plate located between two adjacent arc-shaped strips.

[0014] Furthermore, the inner wall of the rotating drum is evenly distributed with multiple rubber strips, and the rubber strips are slidably connected to the corresponding slag-removing strips.

[0015] Furthermore, the arc-shaped plate is disposed in the corresponding through hole of the rotating cylinder, and guide rods are fixedly connected to both ends of the arc-shaped plate. The guide rods are slidably connected to the adjacent fixed rings, and an elastic element is connected between the guide rods and the adjacent fixed rings.

[0016] One of the fixed plates is equipped with an annular rotary joint. One side of the annular rotary joint is connected to an external air pump, and the other side is connected to a connecting pipe that is connected to the jet pipe. An arc-shaped block is fixedly connected to one side of each of the two fixed plates, and the arc-shaped block is located near the chain scraper.

[0017] Furthermore, the drive unit includes a motor fixedly installed on the outer wall of the air flotation box, the output end of the motor is connected to a rotating shaft, the rotating shaft is movably connected through two fixed disks, and multiple drive frames are connected between the shaft wall and the inner wall of the rotating cylinder.

[0018] Furthermore, the cleaning plate is inclined and has multiple horizontally arranged filter holes. An arc-shaped protrusion is fixed on the side of the cleaning plate away from the rotating drum, and the arc-shaped protrusion is located on the upper side of the filter holes.

[0019] Another objective of this invention is to provide an adaptive skin-feel coating film preparation process, the purpose of which is to effectively remove wastewater from the separated scum and reduce its water content.

[0020] To achieve the above objectives, the present invention provides the following technical solution: an adaptive skin-feel coating film preparation process, comprising the following steps:

[0021] S1. Substrate pretreatment: Physically polish the surface of the substrate to improve its roughness and dry it to remove moisture;

[0022] S2. Coating Application: Apply a skin-feel paint to the substrate surface using a uniform atomized spray.

[0023] S3. Leveling and curing: Let stand at room temperature for 5-10 minutes to eliminate bubbles and orange peel, then heat in a high-temperature curing equipment at 80-150℃ for 20-40 minutes to form.

[0024] S4. Wastewater treatment: Wastewater containing scum enters the flotation tank. The chain scraper scrapes the scum onto the diversion plate. The drive unit drives the rotating drum to rotate. The scum removal component removes the scum in the water. The jet pipe blows away the wastewater on the surface of the scum. The cleaning plate scrapes away the scum on the surface of the rotating drum.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The rotating drum and the retractable slag-removing component work together to precisely separate scum and wastewater on the diversion plate. The slag-removing component extends from the rotating drum along a specific trajectory, efficiently removing scum, while the wastewater flows down the diversion plate. As the slag-removing component rises with the scum, the jet pipe sprays high-pressure air to forcefully strip away any remaining wastewater from the scum. Finally, the scum is discharged from the equipment along the inclined cleaning plate. This process not only significantly reduces the moisture content of the scum but also cleverly avoids the clogging problems of traditional filter structures, achieving efficient and stable wastewater treatment.

[0027] 2. As the dehydrated scum rolls off the surface of the cleaning plate, the residual wastewater on the scum is affected by the surface tension of the arc-shaped protrusions during its flow, forming a flow path along the contour of the protrusions and eventually converging into the filter holes. Meanwhile, the scum, being granular, experiences a jumping effect when passing the arc-shaped protrusions, directly sliding past the filter holes and continuing downwards. This separation method, based on differences in physical properties, achieves highly efficient secondary solid-liquid separation without the need for additional power, further improving the dewatering effect on the scum.

[0028] 3. By setting up the arc-shaped bars, the flowing scum can be gathered between two adjacent arc-shaped bars. The end of the scum-collecting bar forms a precise mechanical fit with the arc-shaped bars, so that when the scum-collecting bar passes between two adjacent arc-shaped bars, it can efficiently capture the gathered scum during rotation. Attached Figure Description

[0029] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention;

[0030] Figure 2 This is a schematic cross-sectional view of the air flotation box structure of a wastewater treatment device for preparing adaptive skin-feel coating film according to the present invention;

[0031] Figure 3 This is a schematic diagram of the internal structure of the rotating drum of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention;

[0032] Figure 4 This is a schematic diagram showing the disassembled structure of the rotating drum and fixed disc of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention.

[0033] Figure 5 This is a schematic diagram of the drive unit structure of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention;

[0034] Figure 6 This is a schematic diagram of the diversion plate structure of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention;

[0035] Figure 7 This is a schematic diagram of the slag removal mechanism of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention.

[0036] Figure 8 This is a schematic diagram of the jetting mechanism of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention.

[0037] Figure 9 This is a schematic diagram of the fixed disc and guide groove structure of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention;

[0038] Figure 10This is a schematic diagram of the rotating drum, slag removal mechanism, and air jet mechanism of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention.

[0039] Figure 11 This is a schematic cross-sectional view of the cleaning plate structure of a wastewater treatment device for preparing an adaptive skin-feel coating film according to the present invention.

[0040] In the picture:

[0041] 1. Flotation box; 2. Chain scraper; 3. Rotary drum; 4. Fixed plate; 5. Diversion plate; 6. Cleaning plate; 7. Slag removal mechanism; 71. Fixed ring; 72. Connecting rod; 73. Slag removal bar; 74. Guide wheel; 8. Air jet mechanism; 81. Arc plate; 82. Guide rod; 83. Air jet pipe; 84. Annular rotary joint; 9. Guide groove; 91. Arc groove; 92. Straight groove; 10. Arc bar; 11. Drive unit; 111. Motor; 112. Rotating shaft; 113. Drive frame; 12. Positioning ring; 13. Filter hole; 14. Arc protrusion; 15. Rubber strip; 16. Arc block. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Example 1, referring to Figures 1-9 This invention provides a wastewater treatment device for the preparation of adaptive skin-feel coating films, comprising an air flotation tank 1 and a chain scraper 2, and a rotating drum 3 disposed within the air flotation tank 1. Both ends of the inner wall of the rotating drum 3 are rotatably connected to fixed disks 4, which are fixedly installed on the inner wall of the air flotation tank 1. A guide plate 5, fixedly connected to the inner wall of the air flotation tank 1, is disposed on the lower side of the rotating drum 3. A cleaning plate 6, fixedly connected to the air flotation tank 1, is disposed on the side of the rotating drum 3 away from the chain scraper 2. One end of the cleaning plate 6 slides in contact with the outer wall of the rotating drum 3. A slag removal mechanism 7 and an air jet mechanism 8 are installed inside the rotating drum 3. The slag removal mechanism 7 includes two fixing rings 71, which are disposed between the two fixing disks 4 and fixedly connected to the end of the inner wall of the rotating drum 3. Multiple slag-removing components are arranged in a ring at equal intervals between the fixed rings 71. These components movably penetrate the rotating drum 3 and slide against the fixed rings 71. The jetting mechanism 8 includes multiple arc-shaped plates 81. Through holes adapted to the arc-shaped plates 81 are opened on the arc-shaped sidewall of the rotating drum 3. The arc-shaped plates 81 are slidably connected to the fixed rings 71, and jetting pipes 83 are installed on the concave side of the arc-shaped plates 81. Guide grooves 9 are opened on opposite sides of the two fixed disks 4. Each guide groove 9 includes two arc-shaped grooves 91 of different sizes, concentrically arranged with the fixed disks 4, and connected by a straight groove 92. The slag-removing components movably engage with the guide grooves 9. A drive unit 11 is installed on the air flotation box 1 to drive the rotating drum 3 to rotate.

[0044] Specifically, when the slag-containing wastewater flows into the flotation tank 1, the chain scraper 2 rotates continuously, slowly pushing the slag towards the rotating drum 3. As the slag, carrying the wastewater, slides down the guide plate 5, the drive unit 11 starts, causing the rotating drum 3 to rotate. The slag-removing component rotates with the rotating drum 3. During the sliding contact with the inner wall of the guide groove 9, when it rotates to a position facing the guide plate 5, the slag-removing component automatically extends outward from the outside of the rotating drum 3, accurately removing the slag on the guide plate 5. The entrained wastewater continues to flow downward along the inclined surface of the guide plate 5 under the action of gravity. As the rotating drum 3 continues to rotate, the slag-removing component causes the slag to gradually move upward. At this time, the arc-shaped plate 81, originally contained inside the rotating drum 3, begins to extend away from the rotating drum 3 due to the change in its trajectory, fully exposing the jet pipe 83 installed on its concave side. The jet pipe 83 then sprays out a high-pressure airflow, powerfully washing the surface of the slag and quickly stripping away the residual wastewater. When the slag removal component rotates to the top position of the rotating drum 3, under the guidance of the special structure of the guide groove 9, the slag removal component gradually retracts into the rotating drum 3. This action causes the slag to be smoothly unloaded onto the surface of the rotating drum 3 and neatly piled up. Then, the fixedly installed cleaning plate 6 uses its end that is attached to the outer wall of the rotating drum 3 to completely remove the piled slag, completing the entire slag removal process.

[0045] The jet pipe 83 effectively solves the problem of high water content in scum. When the scum removal device carries the scum upward, the jet pipe 83 sprays air in time to forcefully peel off the wastewater from the surface of the scum. This not only reduces the burden of subsequent waste residue treatment, but also enables more wastewater to be recycled and reused, thus improving water resource utilization.

[0046] Among them, reference Figure 1 , Figure 2 An air flotation assembly is installed on the left side of the air flotation tank 1. The air flotation assembly includes an air pump, a pressure tank, and an aeration pipe. The air pump delivers pressurized gas into the pressure tank and sprays it out through the aeration pipe. When the wastewater entering from the left side of the air flotation tank 1 flows, the aeration comes into contact with the scum during the floating process and lifts the scum, causing the scum to accumulate on the surface of the wastewater. When the chain scraper 2 rotates, it slides the scum towards one side of the rotating drum 3.

[0047] Understandably, referring to Figure 1 The air flotation box 1 has a drain hole on the side wall below the drive unit 11. The wastewater discharged by the diversion plate 5 is discharged through the drain hole. The drain hole is connected to the separation outlet of the air flotation box 1 through a connecting pipe to achieve effective recycling of wastewater.

[0048] Reference Figure 4 A positioning ring 12 is provided on the side of the two fixed disks 4 that are far apart from each other. The positioning ring 12 is fixedly connected to the inner wall of the rotating cylinder 3. The two sides of the fixed disk 4 are in sliding contact with the corresponding positioning ring 12 and fixed ring 71 respectively.

[0049] Specifically, multiple rollers are evenly distributed on the arc side of the fixed disk 4, and these rollers form rolling contact with the inner wall of the rotating drum 3. When the drive unit 11 drives the rotating drum 3 to rotate, the rollers reduce frictional resistance and support the inner wall of the rotating drum 3 through rolling, effectively dispersing the radial force generated when the rotating drum 3 rotates. The dual limiting of the positioning ring 12 and the fixed ring 71 ensures the axial positional accuracy of the fixed disk 4 inside the rotating drum 3, so that the rotating drum 3 maintains a stable axial rotation trajectory during high-speed rotation, avoiding equipment wear and operational instability caused by shaking or offset.

[0050] Reference Figure 7 and Figure 9 The slag removal component includes a connecting rod 72. Multiple slag removal strips 73 are fixedly installed at equal intervals on one side of the connecting rod 72 facing the rotating drum 3. The slag removal strips 73 are movably installed through the rotating drum 3. The connecting rod 72 is slidably engaged with the sliding groove opened on the side wall of the fixed ring 71. Guide wheels 74 are fixedly connected to both ends of the connecting rod 72. The guide wheels 74 are in rolling contact with the inner wall of the guide groove 9.

[0051] Specifically, when the rotating drum 3 begins to rotate under the drive of the drive unit 11, the fixed ring 71 rotates synchronously, thereby driving the connecting rod 72 and the slag-removing bar 73 to perform circular motion around the axis of the rotating drum 3. During this process, the guide wheel 74 rolls along the trajectory of the guide groove 9. Since the guide groove 9 is composed of concentrically arranged large and small arc-shaped grooves 91 and connected straight grooves 92, the guide wheel 74 guides the connecting rod 72 to perform periodic reciprocating sliding along the sliding groove on the fixed ring 71 during the movement. This composite motion enables the slag-removing bar 73 to achieve precise extension and retraction movements at different positions while following the rotation of the rotating drum 3.

[0052] Specifically, when the slag-removing bar 73 rotates above the guide plate 5, it extends outward from the outside of the rotating drum 3 under the action of the guide groove 9, forming a highly efficient slag-removing action. When it rotates to the top position of the rotating drum 3, the slag-removing bar 73 retracts into the rotating drum 3, making it easier for the cleaning plate 6 to thoroughly remove the residual slag on its surface. This precise motion control not only realizes the automation and continuity of the slag-removing process, but also significantly improves the slag collection efficiency by optimizing the movement trajectory of the slag-removing bar 73.

[0053] It should be noted that the slag-removing bar 73 is set at an acute angle to the tangent of the rotating drum 3. When the drum 3 rotates, this acute angle gives the slag-removing bar 73 a mechanical advantage similar to "oblique scooping" during the cutting process into the slag layer. Compared with the vertical cutting method, this reduces resistance, making the slag easier to remove and less likely to fall off. Especially under conditions where the slag has a high viscosity, the acute angle design can effectively prevent the slag-removing bar 73 from deforming due to excessive resistance, ensuring the stability of the slag-removing action.

[0054] Reference Figure 10Multiple rubber strips 15 are evenly distributed on the inner wall of the rotating drum 3, and the rubber strips 15 are slidably connected to the corresponding slag removal strips 73.

[0055] Specifically, the rubber strip 15 is fixedly connected to the inner wall of the rotating drum 3, and the rubber strip 15 and the corresponding slag-removing strip 73 form a sliding seal fit. The sliding contact surfaces of the rubber strip 15 and the slag-removing strip 73 are flat and smooth. When the slag-removing strip 73 retracts into the rotating drum 3 under the guidance of the guide groove 9, the elastic lip of the rubber strip 15 will tightly fit the surface of the slag-removing strip 73, forming a dynamic sealing structure. The elastic sealing effect of the rubber strip 15 can effectively intercept the wastewater and residue carried on the surface of the slag-removing strip 73, significantly reducing the risk of pollution inside the rotating drum 3.

[0056] Reference Figure 4 , Figure 8 and Figure 9 An arc-shaped plate 81 is located in the corresponding through hole of the rotating drum 3. Guide rods 82 are fixedly connected to both ends of the arc-shaped plate 81. The guide rods 82 are slidably connected to the adjacent fixed rings 71, and an elastic element is connected between the guide rods 82 and the adjacent fixed rings 71. An annular rotary joint 84 is installed on one of the fixed disks 4. One side of the annular rotary joint 84 is connected to an external air pump, and the other side is connected to the jet pipe 83 through a connecting pipe. Arc-shaped blocks 16 are fixedly connected to the opposite sides of the two fixed disks 4. The arc-shaped blocks 16 are located near the chain scraper 2.

[0057] Specifically, one side of the annular rotary joint 84 is connected to the pressure tank of the flotation equipment via an air pipe. When the rotating drum 3 rotates under the drive unit 11, the jetting mechanism 8 rotates synchronously with the fixed ring 71. When the guide rod 82 rotates with the rotating drum 3 to the position of the arc-shaped block 16, the outer arc surface of the arc-shaped block 16 contacts the end of the guide rod 82 and generates a radial thrust. This thrust overcomes the preload of the elastic element, driving the arc-shaped plate 81 to move away from the rotating drum 3, and driving the jetting pipe 83 to move synchronously to the outside of the rotating drum 3. At this time, the compressed air in the pressure tank enters the jetting pipe 83 through the annular rotary joint 84 and the connecting pipe, and is ejected in the form of a high-speed airflow, which precisely acts on the scum on the scum removal parts passing through this area. The high-speed airflow forms a shearing force on the surface of the scum, effectively stripping the wastewater entrained in the scum and achieving solid-liquid separation.

[0058] Among them, reference Figure 10 When the slag removal component rotates clockwise and leaves the guide plate 5, the guide rod 82 adjacent to the upper side of the slag removal component contacts the arc block 16, so that the jet pipe 83 is exposed to blow air onto the slag. When the guide rod 82 stops contacting the arc block 16, the elastic element drives the arc plate 81 to fit into the through hole of the rotating drum 3, so that the surface of the rotating drum 3 forms a smooth arc surface, which makes it easy for the cleaning plate 6 to remove the slag from the surface of the rotating drum 3.

[0059] Reference Figure 5The drive unit 11 includes a motor 111 fixedly installed on the outer wall of the air flotation box 1. The output end of the motor 111 is connected to a rotating shaft 112. The rotating shaft 112 is movably connected through two fixed disks 4, and multiple drive frames 113 are connected between the shaft wall of the rotating shaft 112 and the inner wall of the rotating cylinder 3.

[0060] Specifically, motor 111 drives rotating shaft 112 and drive frame 113. Figure 10 (From the perspective of) rotating clockwise, the rotating drum 3 rotates synchronously with the rotating shaft 112, so that the slag removal bar 73 protruding on the lower side of the rotating drum 3 separates the wastewater and scum on the diversion plate 5.

[0061] Example 2, refer to Figure 6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the diversion plate 5 has an arc-shaped structure, and multiple arc-shaped strips 10 are fixedly connected at equal intervals on the concave side wall of the diversion plate 5. The slag-removing strip 73 facing the side of the diversion plate 5 is arranged between two adjacent arc-shaped strips 10.

[0062] Specifically, when the slag-containing wastewater flows on the concave side surface of the diversion plate 5, the slag-removing strips 73 located on the concave side of the diversion plate 5 separate the wastewater from the slag. At the same time, the rotation of the slag-removing strips 73 causes the slag to rise with the rotating drum 3. The cross-section of the arc-shaped strips 10 is rectangular on one side near the concave side of the diversion plate 5 and triangular on the other side. The arc-shaped strips 10 allow the flowing slag to accumulate between two adjacent arc-shaped strips 10. When the slag-removing strips 73 rotate with the rotating drum 3 to the area of ​​the diversion plate 5, their ends are precisely located in the gap between two adjacent arc-shaped strips 10, forming a precise mechanical fit. Thus, when the slag-removing strips 73 pass between two adjacent arc-shaped strips 10, they can efficiently capture the accumulated slag during rotation.

[0063] It should be noted that when the rotating drum 3 rotates, at least two slag-removing components are simultaneously located on the concave side of the guide plate 5 to prevent scum from being discharged downwards with the wastewater after the slag-removing components leave the guide plate 5, as there is no interception structure on the guide plate 5. The remaining structure is the same as that in Embodiment 1.

[0064] Example 3, referring to Figure 11 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the cleaning plate 6 is inclined and has a plurality of horizontally arranged filter holes 13. An arc-shaped protrusion 14 is fixed on the side of the cleaning plate 6 away from the rotating drum 3, and the arc-shaped protrusion 14 is located on the upper side of the filter holes 13.

[0065] Specifically, the cleaning plate 6 is fixed to the right side of the rotating drum 3 at an angle of 30°-45° to the horizontal plane. The horizontally evenly distributed filter holes 13 on its surface and the arc-shaped protrusion 14 at the top form a synergistic separation system. When the scum removal bar 73 retracts into the interior of the rotating drum 3, the scum slides down along the cleaning plate 6 under the action of gravity. At this time, the residual wastewater flows towards the filter holes 13 under the guidance of the inclined surface.

[0066] The design of the arc-shaped protrusion 14 utilizes the difference in physical properties between the solid and liquid phases: during the flow process, the wastewater is affected by the surface tension of the arc-shaped protrusion 14, forming a flow path along the contour of the protrusion, and eventually converging into the filter holes 13; while the scum, being granular, experiences a jumping effect when passing through the arc-shaped protrusion 14, directly sliding down over the filter holes 13. This separation method based on the difference in physical properties achieves efficient secondary solid-liquid separation without additional power. The remaining structure is the same as that in Example 2.

[0067] Based on embodiments 1-3, the working principle of this invention is as follows: When the equipment is working, wastewater containing slag enters the flotation tank 1. The flotation component causes the slag to accumulate on the water surface. The chain scraper 2 pushes it to the guide plate 5. The drive unit 11 drives the rotating drum 3 to rotate. Under the action of the guide groove 9, the slag-removing component rotates to the guide plate 5 and extends to remove the slag. The wastewater flows down along the guide plate 5. When the slag-removing component lifts the slag, the arc plate 81 extends under the action of the arc block 16, and the jet pipe 83 sprays high-pressure airflow to strip the slag and wastewater. When the slag-removing component rotates to the top of the rotating drum 3, it retracts under the guidance of the guide groove 9, and the slag falls onto the surface of the rotating drum 3 and is removed by the cleaning plate 6.

[0068] Example 4, refer to Figures 1-11 The fourth embodiment of the present invention provides: an adaptive skin-feel coating film preparation process, comprising the following steps:

[0069] S1. Substrate pretreatment: Physically polish the surface of the substrate to improve its roughness and dry it to remove moisture;

[0070] S2. Coating Application: Apply a skin-feel paint to the substrate surface using a uniform atomized spray.

[0071] S3. Leveling and curing: Let stand at room temperature for 5-10 minutes to eliminate bubbles and orange peel, then heat in a high-temperature curing equipment at 80-150℃ for 20-40 minutes to form.

[0072] S4. Wastewater treatment: Wastewater containing slag enters the flotation tank 1. The chain scraper 2 scrapes the slag onto the diversion plate 5. The drive unit 11 drives the rotating drum 3 to rotate. The slag removal component removes the slag in the water. The jet pipe 83 blows away the wastewater on the surface of the slag. The cleaning plate 6 scrapes away the slag on the surface of the rotating drum 3.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A wastewater treatment device for the preparation of adaptive skin-feel coating films, comprising an air flotation tank and a chain scraper, characterized in that: It also includes a rotating drum installed inside the flotation box. Both ends of the inner wall of the rotating drum are rotatably connected to fixed plates, which are fixedly installed on the inner wall of the flotation box. A flow guide plate is provided on the lower side of the rotating drum and is fixedly connected to the inner wall of the flotation box. A cleaning plate is provided on the side of the rotating drum away from the chain scraper and is fixedly connected to the flotation box. One end of the cleaning plate is in sliding contact with the outer wall of the rotating drum. A slag removal mechanism and an air jet mechanism are installed inside the rotating drum. The slag removal mechanism includes two fixed rings, which are located between two fixed discs and fixedly connected to the inner wall end of the rotating drum. Multiple slag removal components are arranged in a ring at equal intervals between the two fixed rings. The slag removal components are movably disposed through the rotating drum and are slidably engaged with the fixed rings. Each slag removal component includes a connecting rod, and multiple slag removal strips are fixedly disposed at equal intervals on one side of the connecting rod facing the rotating drum. The slag removal strips are movably disposed through the rotating drum. The connecting rod is slidably engaged with a groove opened on the side wall of the fixed ring, and guide wheels are fixedly connected to both ends of the connecting rod. The guide wheels are in rolling contact with the inner wall of the guide groove. The jetting mechanism includes multiple arc-shaped plates. The arc-shaped sidewall of the rotating drum has through holes adapted to the arc-shaped plates. The arc-shaped plates are slidably connected to the fixed rings, and jet pipes are installed on the concave side of the arc-shaped plates. The arc-shaped plates are located in the corresponding through holes of the rotating drum. Guide rods are fixedly connected to both ends of the arc-shaped plates. The guide rods are slidably connected to the adjacent fixed rings, and an elastic element is connected between the guide rods and the adjacent fixed rings. An annular rotary joint is installed on one of the fixed plates. One side of the annular rotary joint is connected to an external air pump, and the other side is connected to the jet pipe through a connecting pipe. Arc-shaped blocks are fixedly connected to the opposite sides of the two fixed plates. The arc-shaped blocks are located near the chain scraper. Guide grooves are provided on opposite sides of the two fixed disks. Each guide groove includes two arc-shaped grooves of different sizes. The two arc-shaped grooves are concentrically arranged with the fixed disks, and a straight groove connects the two arc-shaped grooves. The slag removal component is movably engaged with the guide grooves. A drive unit is installed on the air flotation box, and the drive unit is used to drive the rotating drum to rotate.

2. The wastewater treatment equipment for preparing adaptive skin-feel coating film according to claim 1, characterized in that, A positioning ring is provided on one side of each of the two fixed disks that are far apart from each other. The positioning ring is fixedly connected to the inner wall of the rotating cylinder. The two sides of the fixed disk are in sliding contact with the corresponding positioning ring and fixed ring, respectively.

3. The wastewater treatment equipment for preparing adaptive skin-feel coating film according to claim 1, characterized in that, The diversion plate has an arc-shaped structure, and multiple arc-shaped strips are fixedly connected at equal intervals on the concave side wall of the diversion plate. The slag-removing strip facing one side of the diversion plate is located between two adjacent arc-shaped strips.

4. The wastewater treatment equipment for preparing adaptive skin-feel coating film according to claim 1, characterized in that, The inner wall of the rotating drum is evenly distributed with multiple rubber strips, and the rubber strips are slidably connected to the corresponding slag-removing strips.

5. The wastewater treatment equipment for preparing adaptive skin-feel coating film according to claim 1, characterized in that, The drive unit includes a motor fixedly installed on the outer wall of the air flotation box. The output end of the motor is connected to a rotating shaft. The rotating shaft is movably installed through two fixed plates, and multiple drive frames are connected between the shaft wall and the inner wall of the rotating cylinder.

6. The wastewater treatment equipment for preparing adaptive skin-feel coating film according to claim 1, characterized in that, The cleaning plate is inclined and has multiple horizontally arranged filter holes. An arc-shaped protrusion is fixed on the side of the cleaning plate away from the rotating drum, and the arc-shaped protrusion is located above the filter holes.

7. A process for preparing an adaptive skin-feel coating film, applied to the wastewater treatment equipment for preparing an adaptive skin-feel coating film as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Substrate pretreatment: Physically polish the surface of the substrate to improve its roughness and dry it to remove moisture; S2. Coating Application: Apply a skin-feel paint to the substrate surface using a uniform atomized spray. S3. Leveling and curing: Let stand at room temperature for 5-10 minutes to eliminate bubbles and orange peel, then heat in a high-temperature curing equipment at 80-150℃ for 20-40 minutes to form. S4. Wastewater treatment: Wastewater containing scum enters the flotation tank. The chain scraper scrapes the scum onto the diversion plate. The drive unit drives the rotating drum to rotate. The scum removal component removes the scum in the water. The jet pipe blows away the wastewater on the surface of the scum. The cleaning plate scrapes away the scum on the surface of the rotating drum.

Images