A sewage treatment device for the preparation of waterborne coatings

Abstract

The present invention discloses a sewage treatment device for the preparation of waterborne coatings in the technical field of sewage treatment equipment for the preparation of waterborne coatings, including a treatment shell. An inlet and a drain outlet are provided on the side surface of the treatment shell. Supporting legs are fixedly connected to the bottom of the treatment shell. A cover plate is fixedly connected to the top of the treatment shell. Triangular holes penetrating the cover plate are provided on the surface of the cover plate. A triangular support ring is fixedly connected to the inner wall of the treatment shell. A rotating roller is slidably connected to the inner wall of the triangular support ring. A connecting shaft is fixedly connected to the bottom of the rotating roller. The connecting shaft penetrates the treatment shell and is rotatably connected to the treatment shell in a sealed manner; by setting structures such as a fixing device, a limiting device, a rotating roller, an installation shell, and an extension shaft, when the stirring blades are damaged such as rusting, wearing, and being corroded by sewage and need to be repaired, first release the limit of the installation shell to make it drive the stirring blades to move out of the treatment shell.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment for the preparation of waterborne coatings, and specifically relates to a sewage treatment equipment for the preparation of waterborne coatings. Background Art

[0002] Coating production sewage refers to the water discharged during the production of resins, varnishes, paints, etc. Coating sewage mainly comes from the fact that there are many equipment that need to be washed during coating production, such as paint mixing tanks, filters and filter media, storage tanks, storage troughs. Especially in the production of waterborne coatings, equipment cleaning is more frequent. The components of waterborne coating pollutants are complex and the pollutant content is high. Based on environmental protection requirements, the waste water and sewage generated during the coating production process need to be treated before discharge.

[0003] For the treatment of waterborne coating sewage, there are physical treatment methods, chemical treatment methods and biological treatment methods. When using the chemical treatment method to treat sewage, it is usually necessary to use a mixing device to fully mix and stir the sewage and chemical reagents. After the mixing device is used for a long time, the stirring blades will inevitably be damaged such as rusting, wear and being corroded by sewage. This kind of damage has a great impact on the stirring function of the stirring blades, thus affecting the sewage treatment effect. The stirring blades are usually welded to a ring structure or the stirring blades and the ring structure are integrally processed. Manually repairing the stirring blades requires replacing the entire stirring blade and the ring structure, which not only causes waste of resources and increases the company's cost expenditure, but also makes the replacement process difficult, time-consuming and laborious.

[0004] Based on this, the present invention designs a sewage treatment equipment for the preparation of waterborne coatings to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a sewage treatment equipment for the preparation of waterborne coatings to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A sewage treatment device for the preparation of waterborne coatings, including a treatment shell. An inlet and a drain are provided on the side of the treatment shell. Support legs are fixedly connected to the bottom of the treatment shell. A cover plate is fixedly connected to the top of the treatment shell. Triangular holes penetrating the cover plate are provided on the surface of the cover plate. A triangular support ring is fixedly connected to the inner wall of the treatment shell. A rotating roller is slidably connected to the inner wall of the triangular support ring. A connecting shaft is fixedly connected to the bottom of the rotating roller. The connecting shaft penetrates the treatment shell and is rotatably connected to the treatment shell in a sealed manner. An end of the connecting shaft is fixedly connected to a motor. A motor support frame is provided on the side of the motor. Three limit chutes are provided on the top surface of the rotating roller. An installation shell is slidably connected to the inner wall of the limit chute. A stirring blade is slidably connected to the inner wall of the installation shell. A fixing device for fixing the stirring blade is connected to the inner wall of the installation shell. A limiting device for limiting the movement of the installation shell is connected to the top side of the installation shell. An extension shaft is fixedly connected to the top of the rotating roller. Three T-shaped chutes are provided on the surface of the extension shaft. An L-shaped pulling block is slidably connected to the inner wall of the T-shaped chute. A first plate penetrating the installation shell is fixedly connected to the bottom of the L-shaped pulling block. A touch plate is fixedly connected to the side of the end of the first plate. A rope is fixedly connected to the top of the L-shaped pulling block. A runner is fixedly connected to the end of the rope. A first shaft penetrating the runner is fixedly connected to the side of the runner. Second plates are rotatably connected to both ends of the surface of the first shaft. The second plates are fixedly connected to the extension shaft. A rotating handwheel is fixedly connected to the end of the first shaft;

[0007] The fixing device includes two groups of fixing blocks, with two in each group. A sliding gap is provided between the fixing blocks in the same group. The fixing blocks are fixedly connected to the inner wall of the installation shell. The top and bottom surfaces of the stirring blade are respectively in contact with the two groups of fixing blocks. A moving plate is slidably connected to the inner wall of the sliding gap. Four special-shaped holes penetrating the moving plate are provided on the side of the moving plate. The special-shaped hole is composed of a first hole and a second hole. Gas springs and L-shaped plates are respectively fixedly connected to both ends of the surface of the moving plate. The gas springs are fixedly connected to the inner wall of the installation shell. A first cylinder is slidably connected to the inner wall of the first hole. The first cylinder is fixedly connected to the side of the stirring blade. A second cylinder is fixedly connected to the end of the first cylinder. The diameter of the second cylinder is slightly smaller than that of the second hole. The width of the intersection of the first hole and the second hole is slightly smaller than the diameter of the first cylinder. Three pressing shafts are fixedly connected to the surface of the extension shaft. The pressing shafts are adapted to the L-shaped plates;

[0008] The limiting device includes a limiting rod which penetrates through the installation shell and is slidably connected to the installation shell. A third plate is slidably connected to the surface of the limiting rod. A fourth plate is fixedly connected to the bottom of the third plate. The fourth plate is fixedly connected to the surface of the rotating roller. An L-shaped connecting plate is fixedly connected to the end of the limiting rod. A limiting spring with both ends respectively fixed on the third plate and the L-shaped connecting plate is sleeved on the surface of the limiting rod. A pressure receiving plate is fixedly connected to the side surface of the L-shaped connecting plate. An inclined surface is provided on the side surface of the pressure receiving plate, and the inclined surface is adapted to the touch plate.

[0009] As a further solution of the present invention, three brackets are fixedly connected to the top of the cover plate. A bracket ring is fixedly connected to the ends of the three brackets together. A bracket shaft is rotatably connected to the inner wall of the bracket ring. The bracket shaft is fixedly connected to the top of the extension shaft.

[0010] As a further solution of the present invention, a positioning block is fixedly connected to the top surface of the bracket. A positioning rod penetrating through the positioning block is slidably connected to the side surface of the positioning block. Three positioning holes are formed in the side surface of the bracket shaft. The positioning rod is slidably connected to the positioning holes.

[0011] As a further solution of the present invention, four groups of special-shaped grooves penetrating through the moving plate are formed in the side surface of the moving plate. The number of each group is two. The special-shaped grooves in the same group are distributed on both sides of the intersection of the first hole and the second hole.

[0012] As a further solution of the present invention, a counterweight ring is slidably connected to the surface of the extension shaft. The inner wall of the counterweight ring is fixedly connected to the L-shaped pulling block.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. By setting structures such as the fixing device, the limiting device, the rotating roller, the installation shell and the extension shaft, when the stirring blades are damaged due to rust, wear and sewage corrosion and need to be repaired, first release the limit of the installation shell, so that it drives the stirring blades to move out of the treatment shell. Use the pressing shaft to release the limit of the stirring blades, so that they can be easily removed for replacing with new stirring blades or performing some surface treatments. The whole process can be operated by a single person, which is simple and fast. Since the stirring blades are set as a separate structure instead of three stirring blades welded together through a ring structure, the weight of a single stirring blade is small and can be replaced by one person, making the replacement of the stirring blades easy to operate, avoiding the problems that the stirring blades are usually welded to a ring structure or the stirring blades and the ring structure are integrally processed, and it is difficult and time-consuming to replace the whole stirring blade and the ring structure during manual repair of the stirring blades, which not only causes waste of resources and increases the company's cost expenditure, but also makes the replacement process difficult and time-consuming.

[0015] 2. The width at the intersection of the first hole and the second hole is slightly smaller than the diameter of the first cylinder. Therefore, the first cylinder needs to overcome a certain resistance to enter the second hole. To avoid the problem of excessive resistance encountered by the first cylinder, special-shaped grooves are provided on both sides of the intersection of the first hole and the second hole. When the first cylinder moves to the intersection of the first hole and the second hole, it will squeeze the inner wall here. Due to the existence of the special-shaped grooves, the structure here will deform, increasing the width for the first cylinder to pass through, thereby reducing the resistance to its advancement.

[0016] 3. By setting structures such as positioning rods and positioning holes in the present invention, for the position where the extension shaft stops rotating, the three positioning rods can be inserted into the positioning holes, thus accurately ensuring that the position where the extension shaft stops rotating is the maintenance stop position we need. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a three-dimensional view of the overall structure of the present invention after partial sectioning;

[0019] Figure 2 is Figure 1 a partial enlarged view of part A in

[0020] Figure 3 It is a three-dimensional view of the connection relationship of the structures such as the rotating roller, extension shaft, mounting shell, stirring blade, fixing device, and limiting device of the present invention;

[0021] Figure 4 is Figure 3 a partial enlarged view of part B in

[0022] Figure 5 is Figure 3 a partial enlarged view of part C in

[0023] Figure 6 It is a plan view of the present invention after transverse sectioning of the structures such as the mounting shell, stirring blade, fixing block, and moving plate;

[0024] Figure 7 It is a three-dimensional view of the connection relationship of the structures such as the fixing block, moving plate, first cylinder, and second cylinder of the present invention;

[0025] Figure 8 It is a plan view of the structure of the moving plate of the present invention;

[0026] Figure 9 It is a three-dimensional view of the mounting shell of the present invention.

[0027] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0028] Processing shell 1, water inlet 2, drain outlet 3, cover plate 4, triangular hole 5, triangular support ring 6, rotating roller 7, connecting shaft 8, limiting chute 9, mounting shell 10, stirring blade 11, extension shaft 12, T-shaped chute 13, L-shaped pulling block 14, first plate 15, touch plate 16, rope 17, runner 18, first shaft 19, second plate 20, rotating handwheel 21, fixed block 22, sliding gap 23, moving plate 24, first hole 25, second hole 26, gas spring 27, L-shaped plate 28, first cylinder 29, second cylinder 30, pressing shaft 31, limiting rod 32, third plate 33, fourth plate 34, L-shaped connecting plate 35, limiting spring 36, pressure receiving plate 37, bracket 38, bracket ring 39, bracket shaft 40, positioning block 41, positioning rod 42, positioning hole 43, special-shaped groove 44, counterweight ring 45. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Please refer to Figures 1-9, the present invention provides a technical solution: a sewage treatment device for the preparation of waterborne coatings, including a treatment shell 1, an inlet 2 and a drain outlet 3 are provided on the side of the treatment shell 1, support legs are fixedly connected to the bottom of the treatment shell 1, a cover plate 4 is fixedly connected to the top of the treatment shell 1, a triangular hole 5 penetrating the cover plate 4 is provided on the surface of the cover plate 4, a triangular support ring 6 is fixedly connected to the inner wall of the treatment shell 1, a rotating roller 7 is slidably connected to the inner wall of the triangular support ring 6, a connecting shaft 8 is fixedly connected to the bottom of the rotating roller 7, the connecting shaft 8 penetrates the treatment shell 1 and is rotatably connected to the treatment shell 1 in a sealed manner, a motor is fixedly connected to the end of the connecting shaft 8, a motor support frame is provided on the side of the motor, three limiting chutes 9 are provided on the top surface of the rotating roller 7, an installation shell 10 is slidably connected to the inner wall of the limiting chute 9, a stirring blade 11 is slidably connected to the inner wall of the installation shell 10, a fixing device for fixing the stirring blade 11 is connected to the inner wall of the installation shell 10, a limiting device for limiting the movement of the installation shell 10 is connected to the top side of the installation shell 10, an extension shaft 12 is fixedly connected to the top of the rotating roller 7, three T-shaped chutes 13 are provided on the surface of the extension shaft 12, an L-shaped pulling block 14 is slidably connected to the inner wall of the T-shaped chute 13, a first plate 15 penetrating the installation shell 10 is fixedly connected to the bottom of the L-shaped pulling block 14, a touch plate 16 is fixedly connected to the side of the end of the first plate 15, a rope 17 is fixedly connected to the top of the L-shaped pulling block 14, a runner 18 is fixedly connected to the end of the rope 17, a first shaft 19 penetrating the runner 18 is fixedly connected to the side of the runner 18, second plates 20 are rotatably connected to both ends of the surface of the first shaft 19, the second plates 20 are fixedly connected to the extension shaft 12, and a rotating handwheel 21 is fixedly connected to the end of the first shaft 19;

[0031] The fixing device includes two groups of fixing blocks 22, with two in each group. A sliding gap 23 is provided between the fixing blocks 22 in the same group. The fixing blocks 22 are fixedly connected to the inner wall of the installation shell 10. The top and bottom surfaces of the stirring blade 11 are respectively in contact with the two groups of fixing blocks 22. A moving plate 24 is slidably connected to the inner wall of the sliding gap 23. Four special-shaped holes penetrating the moving plate 24 are provided on the side of the moving plate 24. The special-shaped hole is composed of a first hole 25 and a second hole 26. Air springs 27 and L-shaped plates 28 are respectively fixedly connected to both ends of the surface of the moving plate 24. The air springs 27 are fixedly connected to the inner wall of the installation shell 10. A first cylinder 29 is slidably connected to the inner wall of the first hole 25. The first cylinder 29 is fixedly connected to the side of the stirring blade 11. A second cylinder 30 is fixedly connected to the end of the first cylinder 29. The diameter of the second cylinder 30 is slightly smaller than that of the second hole 26. The width at the intersection of the first hole 25 and the second hole 26 is slightly smaller than the diameter of the first cylinder 29. Three pressing shafts 31 are fixedly connected to the surface of the extension shaft 12. The pressing shafts 31 are adapted to the L-shaped plates 28;

[0032] The limiting device includes a limiting rod 32. The limiting rod 32 passes through the mounting shell 10 and is slidably connected to the mounting shell 10. A third plate 33 is slidably connected to the surface of the limiting rod 32. A fourth plate 34 is fixedly connected to the bottom of the third plate 33. The fourth plate 34 is fixedly connected to the surface of the rotating roller 7. An L-shaped connecting plate 35 is fixedly connected to the end of the limiting rod 32. A limiting spring 36 with both ends respectively fixed on the third plate 33 and the L-shaped connecting plate 35 is sleeved on the surface of the limiting rod 32. A pressure receiving plate 37 is fixedly connected to the side surface of the L-shaped connecting plate 35. An inclined surface is provided on the side surface of the pressure receiving plate 37, and the inclined surface is adapted to the touch plate 16;

[0033] When in operation, when the stirring blade 11 is damaged such as rusted, worn, and corroded by sewage and needs to be repaired, the motor stops. Rotate the extension shaft 12 to an appropriate angle to ensure that the repair work of the stirring blade 11 can be carried out smoothly. Manually rotate the rotating handwheel 21. The rotating handwheel 21 drives the rotating wheel 18 to rotate through the first shaft 19. The rope 17 will be wound around the rotating wheel 18. The L-shaped pulling block 14 at the end of the rope 17 will move upward along the T-shaped chute 13 under the pulling of the rope 17. The L-shaped pulling block 14 drives the touch plate 16 to move through the first plate 15. The movement of the touch plate 16 will gradually contact and squeeze the inclined surface of the pressure receiving plate 37. The squeezed pressure receiving plate 37 moves backward and drives the limiting rod 32 to move backward through the L-shaped connecting plate 35. At the same time, the limiting spring 36 is stretched. The backward moving limiting rod 32 finally releases the limit on the installation shell 10. When the installation shell 10 is released from the limit, at this time, the top surface of the touch plate 16 just contacts the inner wall of the installation shell 10. As the L-shaped pulling block 14 continues to move upward, the touch plate 16 will drive the installation shell 10 to move upward. The devices inside the installation shell 10 are also driven to move upward synchronously. As the installation shell 10 moves, the L-shaped plate 28 will contact and be squeezed by the pressing shaft 31. The squeezed L-shaped plate 28 will drive the moving plate 24 to move. The moving plate 24 moves downward and squeezes the air spring 27. When the moving plate 24 moves, since the stirring blade 11 is restricted by the fixing block 22 in terms of the degree of freedom of up and down movement, the first cylinder 29 will enter the second hole 26 from the first hole 25. The diameter of the second hole 26 is slightly larger than that of the second cylinder 30. The second cylinder 30 can pass through the second hole 26. The width of the intersection of the first hole 25 and the second hole 26 is slightly smaller than the diameter of the first cylinder 29. Therefore, the first cylinder 29 needs to overcome a certain resistance to enter the second hole 26. When the second cylinder 30 can pass through the second hole 26, stop rotating the rotating handwheel 21. The rope 17 stops winding and fix the rotating handwheel 21. There are many ways to fix it, which will not be elaborated here. At this time, the stirring blade 11 has moved out of the treatment shell 1 and can be easily taken off to replace the new stirring blade 11 or perform some surface treatments. The whole process can be operated by a single person, simple and fast. Since the stirring blade 11 is set as a separate structure instead of three stirring blades 11 welded together by a ring structure, the weight of the single stirring blade 11 is relatively small and can be replaced by one person, making the replacement of the stirring blade 11 easy to operate. After the replacement is completed, reset the whole device. Since it is for sewage treatment, the parts of the device in contact with sewage also need to be maintained regularly to prevent corrosion by sewage.

[0034] As a further solution of the present invention, three brackets 38 are fixedly connected to the top of the cover plate 4. The ends of the three brackets 38 are commonly fixedly connected to a bracket ring 39. The inner wall of the bracket ring 39 is rotatably connected to a bracket shaft 40. The top of the bracket shaft 40 is fixedly connected to the top of the extension shaft 12. During operation, by providing structures such as the brackets 38, the bracket ring 39, and the bracket shaft 40, it is ensured that the motor drives the extension shaft 12 to rotate. Since the end is not fixed, the problem that the extension shaft 12 shakes and causes equipment damage will not occur.

[0035] As a further solution of the present invention, a positioning block 41 is fixedly connected to the top surface of the bracket 38. A positioning rod 42 passing through the positioning block 41 is slidably connected to the side surface of the positioning block 41. Three positioning holes 43 are formed in the side surface of the bracket shaft 40. The positioning rod 42 is slidably connected to the positioning holes 43. During operation, in order to ensure that after the extension shaft 12 is manually rotated, the stopped position is the maintenance stop position we need. By providing structures such as the positioning rod 42 and the positioning holes 43, when the extension shaft 12 stops rotating, the three positioning rods 42 can be inserted into the positioning holes 43, so that it can accurately ensure that the stopped position of the extension shaft 12 is the maintenance stop position we need.

[0036] As a further solution of the present invention, four groups of special-shaped grooves 44 passing through the moving plate 24 are formed in the side surface of the moving plate 24. The number of each group is two. The same-group special-shaped grooves 44 are distributed on both sides of the intersection of the first hole 25 and the second hole 26. During operation, the width of the intersection of the first hole 25 and the second hole 26 is slightly smaller than the diameter of the first cylinder 29. Therefore, the first cylinder 29 needs to overcome a certain resistance to enter the second hole 26. In order to avoid the problem that the resistance encountered by the first cylinder 29 is too large, special-shaped grooves 44 are provided on both sides of the intersection of the first hole 25 and the second hole 26. When the first cylinder 29 moves to the intersection of the first hole 25 and the second hole 26, it will squeeze the inner wall here. Due to the existence of the special-shaped grooves 44, the structure here will deform, making the width through which the first cylinder 29 passes here increase, thereby reducing the resistance to its advancement.

[0037] As a further solution of the present invention, a counterweight ring 45 is slidably connected to the surface of the extension shaft 12. The inner wall of the counterweight ring 45 is fixedly connected to the L-shaped pulling block 14. During operation, by providing the counterweight ring 45, the L-shaped pulling block 14 will not easily shake up and down, ensuring its stability.

[0038] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0039] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A wastewater treatment device for preparing water-based paint, comprising a treatment shell (1), characterized in that: The side of the processing shell (1) is provided with a water inlet (2) and a water outlet (3); the bottom of the processing shell (1) is fixedly connected to a support leg; the top of the processing shell (1) is fixedly connected to a cover plate (4); the surface of the cover plate (4) is provided with a triangular hole (5) penetrating the cover plate (4); the inner wall of the processing shell (1) is fixedly connected to a triangular support ring (6); the inner wall of the triangular support ring (6) is slidably connected to a rotating roller (7); the bottom of the rotating roller (7) is fixedly connected to a connecting shaft (8); the connecting shaft (8) penetrates the processing shell (1) and is sealed and rotatably connected to the processing shell (1); the connecting shaft (8) The end of the rotating roller (7) is fixedly connected to a motor, a motor support frame is arranged on the side of the motor, three limit slide grooves (9) are provided on the top surface of the rotating roller (7), a mounting shell (10) is slidably connected to the inner wall of the limit slide groove (9), a stirring blade (11) is slidably connected to the inner wall of the mounting shell (10), a fixing device for fixing the stirring blade (11) is connected to the inner wall of the mounting shell (10), a limit device for limiting the movement of the limited mounting shell (10) is connected to the top side of the mounting shell (10), an extension shaft (12) is fixedly connected to the top of the rotating roller (7), and three T-shaped surfaces are provided on the surface of the extension shaft (12). The L-shaped pull block (14) is slidably connected to the inner wall of the T-shaped pull block (13); the bottom of the L-shaped pull block (14) is fixedly connected to a first plate (15) penetrating the mounting shell (10); the end side of the first plate (15) is fixedly connected to a touch plate (16); the top of the L-shaped pull block (14) is fixedly connected to a rope (17); the end of the rope (17) is fixedly connected to a rotating wheel (18); the side of the rotating wheel (18) is fixedly connected to a first shaft (19) penetrating the rotating wheel (18); and the surfaces of both ends of the first shaft (19) are rotatably connected to second plates (20). The second plate (20) is fixedly connected to the extension shaft (12), and the end of the first shaft (19) is fixedly connected to a rotating hand wheel (21); the fixing device comprises two groups of fixed blocks (22), each group having two blocks, a sliding gap (23) is arranged in the middle of the fixed blocks (22) in the same group, a moving plate (24) is slidingly connected to the inner wall of the sliding gap (23), and the two end surfaces of the moving plate (24) are respectively fixedly connected to gas springs (27) and L-shaped plates (28), and the surface of the extension shaft (12) is fixedly connected to three downward pressing shafts (31), and the downward pressing shafts (31) and the L-shaped plates (28) are adapted to each other.

2. A wastewater treatment equipment for preparing water-based paint according to claim 1, characterized in that: The fixed block (22) is fixedly connected to the inner wall of the mounting shell (10); the top and bottom surfaces of the stirring blade (11) are in contact with the two groups of fixed blocks (22) respectively; four special-shaped holes penetrating the movable plate (24) are provided on the side of the movable plate (24); the special-shaped holes are composed of a first hole (25) and a second hole (26); the gas spring (27) is fixedly connected to the inner wall of the mounting shell (10); a first cylinder (29) is slidably connected to the inner wall of the first hole (25); the first cylinder (29) is fixedly connected to the side of the stirring blade (11); a second cylinder (30) is fixedly connected to the end of the first cylinder (29); the second cylinder (30) is slightly smaller than the diameter of the second hole (26); and the width of the intersection of the first hole (25) and the second hole (26) is slightly smaller than the diameter of the first cylinder (29).

3. A wastewater treatment equipment for preparing water-based paint according to claim 1, characterized in that: The limiting device comprises a limiting rod (32), the limiting rod (32) passes through the mounting shell (10) and is slidably connected to the mounting shell (10), the surface of the limiting rod (32) is slidably connected to a third plate (33), the bottom of the third plate (33) is fixedly connected to a fourth plate (34), the fourth plate (34) and the surface of the rotating roller (7) are fixedly connected, the end of the limiting rod (32) is fixedly connected to an L-shaped connecting plate (35), the surface of the limiting rod (32) is sleeved with a limiting spring (36) whose two ends are respectively fixed on the third plate (33) and the L-shaped connecting plate (35), the side of the L-shaped connecting plate (35) is fixedly connected to a pressure plate (37), the side of the pressure plate (37) is provided with an inclined surface, and the inclined surface is adapted to the touch plate (16).

4. A wastewater treatment equipment for preparing water-based paint according to claim 1, characterized in that: Three brackets (38) are fixedly connected to the top of the cover plate (4); the ends of the three brackets (38) are commonly fixedly connected to a bracket ring (39); the inner wall of the bracket ring (39) is rotatably connected to a bracket shaft (40); and the bracket shaft (40) is fixedly connected to the top of the extension shaft (12).

5. A wastewater treatment equipment for preparing water-based paint according to claim 4, characterized in that: A positioning block (41) is fixedly connected to the top surface of the bracket (38), a positioning rod (42) penetrating the positioning block (41) is slidably connected to the side of the positioning block (41), three positioning holes (43) are opened on the side of the bracket shaft (40), and the positioning rod (42) and the positioning hole (43) are slidably connected.

6. The wastewater treatment equipment for preparing water-based paint according to claim 1, characterized in that: Four groups of special-shaped grooves (44) penetrating the movable plate (24) are provided on the side surface of the movable plate (24), each group having two special-shaped grooves. The special-shaped grooves (44) in the same group are distributed on both sides of the intersection of the first hole (25) and the second hole (26).

7. The wastewater treatment equipment for preparing water-based paint according to claim 1, characterized in that: A counterweight ring (45) is slidably connected to the surface of the extension shaft (12), and the inner wall of the counterweight ring (45) is fixedly connected to the L-shaped pulling block (14).

Images