Water-based paint high-efficiency stirring device

Abstract

This utility model belongs to the field of water-based coating processing technology and discloses a high-efficiency mixing device for water-based coatings, including a mixing tank. A mounting frame is fixedly connected to the top of the mixing tank, and a power motor is fixedly connected to the top of the mounting frame. The output end of the power motor is fixedly connected to a reciprocating lead screw through the mounting frame. A movable frame is threaded onto the outer surface of the reciprocating lead screw. Two connecting rods are fixedly connected to the bottom of the movable frame. The bottom ends of the two connecting rods pass through the mixing tank and are fixedly connected to a drive seat. The bottom end of the reciprocating lead screw passes through the top of the mixing tank and is fixedly connected to a drive shaft. This utility model solves the problem of uneven mixing of upper and lower layers of coating and difficulty in dispersing agglomerated materials caused by traditional fixed mixing structures by using the axial sliding cooperation between the mixing tube and the drive shaft and the circumferential transmission structure. Under the action of the mixing blades reciprocating and rotating synchronously with the mixing tube, it achieves efficient mixing of the coating throughout the tank.

Description

Technical Field

[0001] This utility model belongs to the field of water-based coating processing technology, specifically a high-efficiency mixing device for water-based coatings. Background Technology

[0002] With the upgrading of the coating industry's demand for refined production, water-based coatings have gradually become the market mainstream due to their advantages of low VOC and green safety. As the core process in the preparation and formulation of water-based coatings, the mixing process directly determines the uniformity of coating dispersion, storage stability, and final coating effect. To adapt to the process characteristics of water-based coatings, such as multi-component mixing, powder dispersion, and anti-agglomeration, and to meet the dual requirements of large-scale production and high-quality control, a high-efficiency mixing device for water-based coatings is proposed.

[0003] In existing water-based coating mixing devices, the mixing structure is mostly arranged at a fixed height. This can easily lead to uneven mixing of the coating in the tank and the inability to fully disperse agglomerated materials, resulting in poor overall uniformity of the coating. This directly affects the subsequent coating effect, and even after long-term mixing, it is still difficult to eliminate agglomerated particles, which reduces the quality of coating production and processing efficiency.

[0004] Therefore, a high-efficiency mixing device for water-based coatings is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a high-efficiency mixing device for water-based coatings. It solves the problems of uneven mixing between upper and lower layers of coatings and difficulty in breaking up agglomerated materials caused by traditional fixed mixing structures. It achieves efficient mixing of the coating throughout the tank and further improves the overall uniformity of the coating. When reversing, it can quickly convey materials downwards, speeding up the discharge rate. It avoids material sedimentation and allows for flexible switching between mixing and discharge, significantly improving ease of use and processing continuity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency mixing device for water-based coatings, including a mixing tank, a mounting frame fixedly connected to the top of the mixing tank, a power motor fixedly connected to the top of the mounting frame, the output end of the power motor fixedly passing through the mounting frame and fixedly connected to a reciprocating lead screw, and a movable frame threaded onto the outer surface of the reciprocating lead screw.

[0007] The bottom of the movable frame is fixedly connected to two connecting rods. The bottom ends of the two connecting rods pass through the mixing tank and are fixedly connected to a drive seat. The bottom end of the reciprocating screw passes through the top of the mixing tank and is fixedly connected to a drive shaft. A mixing tube is sleeved on the outer surface of the drive shaft. The mixing tube is rotatably connected to the drive seat. The drive shaft and the mixing tube slide axially and are circumferentially connected. Several mixing blades are fixedly connected to the outer surface of the mixing tube.

[0008] Preferably, the upper inner wall of the mounting frame and the top of the mixing tank are fixedly connected to two guide rods, and the two guide rods are slidably connected to the movable frame.

[0009] Preferably, the inner surface of the stirring tube has two drive grooves, and the outer surface of the drive shaft is fixedly connected with a drive bar that works in conjunction with the two drive grooves.

[0010] Preferably, the stirring blades are evenly spaced, the outer edge of the stirring blades is fitted with the inner wall of the mixing tank, and the material-facing end of the stirring blades is provided with a number of shearing teeth.

[0011] Preferably, the stirring blades are inclined relative to the axis of the stirring tube, and the inclination angles of the several stirring blades are all the same.

[0012] Preferably, a feed pipe is installed at the top of the mixing tank, the bottom of the mixing tank is arc-shaped, and a discharge pipe is installed at the lowest point of the arc-shaped surface of the mixing tank. The feed pipe and the discharge pipe are connected to the interior of the mixing tank.

[0013] Preferably, a conveying shaft is fixedly connected to the bottom end of the drive shaft, the conveying shaft extends into the discharge pipe, and an auger conveying blade is fixedly sleeved on the outer surface of the conveying shaft.

[0014] Preferably, a discharge valve is fixedly installed on the discharge pipe, and a discharge valve is fixedly installed at the lower end of the discharge pipe. The auger conveyor blade is located inside the discharge pipe and extends above the discharge valve.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model solves the problems of uneven mixing of upper and lower layers of coating and difficulty in breaking up agglomerated materials caused by traditional fixed mixing structures by using the axial sliding cooperation between the stirring tube and the drive shaft and the circumferential transmission structure. Under the action of the stirring blades reciprocating and rotating synchronously with the stirring tube, it achieves efficient mixing of coating throughout the tank.

[0017] 2. This utility model drives the conveying shaft and the auger conveying blades to rotate synchronously through the drive shaft. When rotating in the forward direction, the material retained in the discharge pipe can be sent back to the tank to continue to participate in the mixing, further improving the overall uniformity of the coating. When rotating in the reverse direction, the material can be quickly conveyed downward to speed up the discharge speed. This not only avoids material sedimentation, but also allows for flexible switching between mixing and discharge, significantly improving the convenience of use and the continuity of processing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2This is a schematic cross-sectional view of the mixing tank structure of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the reciprocating lead screw and drive shaft structure of this utility model;

[0022] Figure 5 This is an exploded view of the stirring tube and drive seat structure of this utility model.

[0023] In the diagram: 1. Mixing tank; 11. Inlet pipe; 12. Outlet pipe; 13. Discharge valve;

[0024] 2. Mounting bracket;

[0025] 3. Power motor; 31. Moving frame; 32. Reciprocating screw; 321. Drive shaft; 322. Drive bar; 33. Guide rod; 34. Connecting rod; 35. Drive seat; 36. Stirring tube; 361. Drive groove; 37. Stirring blade; 371. Shearing tooth; 38. Screw conveyor blade; 39. Conveyor shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 5 As shown, this utility model provides a high-efficiency mixing device for water-based coatings, including a mixing tank 1. A mounting frame 2 is fixedly connected to the top of the mixing tank 1. A power motor 3 is fixedly connected to the top of the mounting frame 2. The output end of the power motor 3 is fixedly connected through the mounting frame 2 and a reciprocating screw 32 is fixedly connected to it. A movable frame 31 is threaded onto the outer surface of the reciprocating screw 32.

[0028] Two connecting rods 34 are fixedly connected to the bottom of the movable frame 31. The bottom ends of the two connecting rods 34 pass through the mixing tank 1 and are fixedly connected to the drive seat 35. The bottom end of the reciprocating screw 32 passes through the top of the mixing tank 1 and is fixedly connected to the drive shaft 321. The outer surface of the drive shaft 321 is sleeved with a stirring tube 36. The stirring tube 36 is rotatably connected to the drive seat 35. The drive shaft 321 and the stirring tube 36 slide axially and are circumferentially connected. Several stirring blades 37 are fixedly connected to the outer surface of the stirring tube 36. The reciprocating screw 32 is rotated by the power motor 3. With the movable frame 31, connecting rods 34 and drive seat 35, the reciprocating lifting of the stirring tube 36 and stirring blades 37 is realized. With the circumferential transmission of the drive shaft 321, the limitations of traditional fixed mixing are broken, and the coating is mixed throughout the mixing tank 1.

[0029] Specifically, the upper inner wall of the mounting frame 2 is fixedly connected to the top of the mixing tank 1 with two guide rods 33. The two guide rods 33 are slidably connected to the moving frame 31. With the help of the guide rods 33 to limit and guide the moving frame 31, the moving frame 31 is prevented from shifting and shaking during the lifting and lowering process, ensuring the smooth operation of the mixing tube 36 and the mixing blade 37, and improving the mixing stability.

[0030] like Figures 1 to 5 As shown, two drive grooves 361 are formed on the inner surface of the stirring tube 36, and a drive bar 322 that is used in conjunction with the two drive grooves 361 is fixedly connected to the outer surface of the drive shaft 321. By utilizing the sliding engagement between the drive bar 322 and the drive grooves 361, the circumferential transmission of the drive shaft 321 to the stirring tube 36 is realized, while the axial lifting and lowering of the stirring tube 36 is not hindered, ensuring that the stirring action is continuous and without jamming.

[0031] Furthermore, several stirring blades 37 are evenly spaced, with the outer edge of the stirring blades 37 fitting with the inner wall of the mixing tank 1. The receiving end of each stirring blade 37 is provided with several shearing teeth 371. The evenly spaced stirring blades 37, combined with the tank wall gap fit design, avoid dead corners in the mixing. The shearing teeth 371 can quickly break up agglomerated paint particles and improve the uniformity of paint mixing.

[0032] like Figures 1 to 5 As shown, the stirring blades 37 are inclined relative to the axis of the stirring tube 36, and the inclination angles of several stirring blades 37 are all the same. When the stirring blades 37 with the same inclination angle rotate, they form a stable vertical convection, which enhances the coating circulation effect in the mixing tank 1, further eliminates the stratification phenomenon, and makes the coating mix more thoroughly.

[0033] It is worth noting that the top of the mixing tank 1 is equipped with a feed pipe 11, the bottom of the mixing tank 1 is arc-shaped, and the lowest point of the arc surface of the mixing tank 1 is equipped with a discharge pipe 12. The feed pipe 11 and the discharge pipe 12 are connected to the inside of the mixing tank 1. The arc-shaped bottom of the mixing tank 1, together with the discharge pipe 12 set at the lowest point, reduces the deposition and residue of paint at the bottom of the tank. Together with the feed pipe 11, it achieves smooth connection between feeding and discharging, and optimizes the material flow path.

[0034] like Figures 1 to 5 As shown, a conveyor shaft 39 is fixedly connected to the bottom end of the drive shaft 321. The conveyor shaft 39 extends into the discharge pipe 12, and an auger conveyor blade 38 is fixedly sleeved on the outer surface of the conveyor shaft 39. The drive shaft 321 synchronously drives the conveyor shaft 39 and the auger conveyor blade 38 to rotate, which can convey the material in the discharge pipe 12 in both directions. Forward rotation returns the material for re-stirring, and reverse rotation accelerates the discharge, taking into account both stirring and discharge efficiency.

[0035] It is worth emphasizing that a discharge valve 13 is fixedly installed on the discharge pipe 12. The discharge valve 13 is fixedly installed at the lower end of the discharge pipe 12. The auger conveyor blade 38 is located inside the discharge pipe 12 and extends above the discharge valve 13. The discharge valve 13 can flexibly control the discharge flow. The auger conveyor blade 38 extends above the discharge valve 13, which can thoroughly clean the residual material in the discharge pipe 12 and accurately control the discharge rhythm.

[0036] The power motor 3 is existing technology and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this application and will not be described in detail. The wiring diagram of the motor in this utility model is common knowledge in the field, and its working principle is already known technology. The appropriate model is selected based on actual use; therefore, the control method and wiring layout of the motor will not be explained in detail.

[0037] Working principle and process: First, the water-based coating raw materials are quantitatively added into the mixing tank 1 to complete the feeding preparation. When starting the mixing operation, the power motor 3 on the mounting frame 2 is turned on. The power motor 3 outputs torque to drive the reciprocating screw 32 to rotate continuously. When the reciprocating screw 32 rotates, it drives the movable frame 31 connected by the outer thread to perform axial reciprocating lifting and lowering motion. Under the limiting guidance of the two guide rods 33, the movable frame 31 always maintains linear lifting and lowering without deflection or swaying. Then, through the two connecting rods 34 at the bottom, it drives the drive seat 35 to reciprocate and lower synchronously. At the same time, the drive shaft 321 connected to the bottom of the reciprocating screw 32 rotates synchronously with the screw. The outer drive bar 322 is embedded in the drive groove 361 on the inner wall of the stirring tube 36 to achieve circumferential transmission and drive the stirring tube 36 to rotate synchronously. The stirring tube 36 is rotatably connected to the drive seat 35 and can rise and fall freely with the drive seat 35, ultimately realizing the compound motion of the stirring tube 36 rotating and reciprocating. The stirring blade 37 on the outer side of the stirring tube 36 moves up and down and rotates accordingly. The inclined stirring blade 37 pushes the coating to form an upward and downward convection. With the shearing teeth 371 at the receiving end, it continuously shears and disperses the agglomerated particles of the coating. The outer edge of the stirring blade 37 is fitted with the inner wall of the mixing tank 1 to completely eliminate the dead corners of the tank wall and bottom, and realize the uniform mixing of the coating throughout the entire area.

[0038] During this process, the drive shaft 321 synchronously drives the conveyor shaft 39 and the auger conveyor blade 38 to rotate forward. The auger conveyor blade 38 returns the paint that falls into the discharge pipe 12 to the bottom of the mixing tank 1 to continue to participate in the mixing and prevent the material from settling and solidifying in the discharge pipe 12. After the paint is evenly mixed, the discharge valve 13 on the discharge pipe 12 is opened, and the direction of the power motor 3 is switched to reverse. At this time, the drive shaft 321 drives the auger conveyor blade 38 to rotate in reverse. The auger conveyor blade 38 generates a downward conveying force, which quickly pushes the mixed paint in the mixing tank 1 into the discharge pipe 12 and smoothly discharges it through the discharge valve 13. The stirring blade 37 continues to rotate and lift, which can further push the residual paint at the bottom of the tank to discharge, achieving residue-free and high-efficiency unloading, and completing the entire mixing and discharge process.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency mixing device for water-based coatings, comprising a mixing tank (1), characterized in that: The top of the mixing tank (1) is fixedly connected to a mounting frame (2), and the top of the mounting frame (2) is fixedly connected to a power motor (3). The output end of the power motor (3) is fixedly connected through the mounting frame (2) and a reciprocating screw (32). The outer surface of the reciprocating screw (32) is threaded with a movable frame (31). The bottom end of the movable frame (31) is fixedly connected to two connecting rods (34). The bottom ends of the two connecting rods (34) pass through the mixing tank (1) and are fixedly connected to the drive seat (35). The bottom end of the reciprocating screw (32) passes through the top end of the mixing tank (1) and is fixedly connected to the drive shaft (321). The outer surface of the drive shaft (321) is fitted with a stirring tube (36). The stirring tube (36) is rotatably connected to the drive seat (35). The drive shaft (321) and the stirring tube (36) slide axially and are circumferentially connected. The outer surface of the stirring tube (36) is fixedly connected with several stirring blades (37).

2. The high-efficiency mixing device for water-based coatings according to claim 1, characterized in that: The upper inner wall of the mounting bracket (2) and the top of the mixing tank (1) are fixedly connected to two guide rods (33), and the two guide rods (33) are slidably connected to the movable frame (31).

3. The high-efficiency mixing device for water-based coatings according to claim 1, characterized in that: The inner surface of the stirring tube (36) has two drive grooves (361), and the outer surface of the drive shaft (321) is fixedly connected with a drive bar (322) that works in conjunction with the two drive grooves (361).

4. The high-efficiency mixing device for water-based coatings according to claim 1, characterized in that: The stirring blades (37) are evenly spaced, and the outer edge of the stirring blades (37) is fitted with the inner wall of the mixing tank (1) with a clearance. The material receiving end of the stirring blades (37) is provided with a number of shearing teeth (371).

5. The high-efficiency mixing device for water-based coatings according to claim 4, characterized in that: The stirring blades (37) are inclined relative to the axis of the stirring tube (36), and the inclination angles of the several stirring blades (37) are all the same.

6. The high-efficiency mixing device for water-based coatings according to claim 1, characterized in that: The top of the mixing tank (1) is equipped with a feed pipe (11), the bottom of the mixing tank (1) is arc-shaped, and the lowest point of the arc surface of the mixing tank (1) is equipped with a discharge pipe (12). The feed pipe (11) and the discharge pipe (12) are connected to the inside of the mixing tank (1).

7. The high-efficiency mixing device for water-based coatings according to claim 6, characterized in that: The bottom end of the drive shaft (321) is fixedly connected to a conveying shaft (39), which extends into the discharge pipe (12), and the outer surface of the conveying shaft (39) is fixedly fitted with an auger conveying blade (38).

8. The high-efficiency mixing device for water-based coatings according to claim 7, characterized in that: A discharge valve (13) is fixedly installed on the discharge pipe (12), and a discharge valve (13) is fixedly installed at the lower end of the discharge pipe (12). The auger conveyor blade (38) is located inside the discharge pipe (12) and extends above the discharge valve (13).

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