A premixing device for alcohol-based coating production

Abstract

This application discloses a premixing device for producing alcohol-based coatings, particularly relating to the field of alcohol-based coating production technology. The device includes a premixing tank, a main stirring rod installed inside the premixing tank, a first driving element for rotating the main stirring rod, and a secondary stirring rod. A planetary gear set connecting the secondary stirring rod is fixed to the upper surface of the main stirring rod. There are two secondary stirring rods, evenly distributed on both sides of the planetary gear set. A drive shaft for transmitting power to the secondary stirring rods is provided on the planetary gear set. The drive shaft passes through the premixing tank and is connected to a second driving element installed on the premixing tank. This application, through the arrangement of the secondary stirring rods, can cooperate with the rotation of the main stirring rod, thereby improving mixing efficiency. Furthermore, through the arrangement of the planetary gear set, the secondary stirring rods can rotate independently while rotating with the main stirring rod, thereby improving mixing efficiency and reducing mixing time.

Description

Technical Field

[0001] This application relates to the field of alcohol-based coating production technology, specifically a premixing device for alcohol-based coating production. Background Technology

[0002] In the production process of alcohol-based coatings, premixing is a crucial preliminary step. Its purpose is to mix various raw materials such as alcohol solvents, resins, fillers, and additives in a preliminary and uniform manner, laying the foundation for subsequent grinding and paint mixing processes.

[0003] As shown in the authorization announcement number CN218795552U, a premixing kettle for producing alcohol-based coatings uses a single stirring blade, which suffers from low mixing efficiency and uneven material dispersion. Especially for alcohol-based coatings with high viscosity or containing easily settling fillers, a single stirring method is insufficient to achieve vigorous agitation throughout the entire process, resulting in unsatisfactory premixing and affecting the quality of the final product. Therefore, this application proposes a premixing device for producing alcohol-based coatings to solve these problems. Summary of the Invention

[0004] The technical problem to be solved by this application is to overcome the existing defects and provide a premixing device for the production of alcohol-based coatings, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a premixing device for producing alcohol-based coatings, comprising a premixing tank, a main stirring rod installed in the premixing tank, a first driving element for driving the main stirring rod to rotate, and an auxiliary stirring rod. The upper surface of the main stirring rod is fixed with a planetary gear set connecting the auxiliary stirring rod. There are two auxiliary stirring rods, which are evenly distributed on both sides of the planetary gear set. The planetary gear set is provided with a drive shaft for transmitting power to the auxiliary stirring rod. The drive shaft passes through the premixing tank and is connected to a second driving element installed on the premixing tank. The planetary gear set is configured so that the auxiliary stirring rod can revolve around the main stirring rod while rotating on its own axis; a lubrication system is also provided to lubricate the planetary gear set.

[0006] Furthermore, the planetary gear set includes a gearbox, a sun gear, and planet gears. The gearbox is fixed on the main stirring rod, and the drive shaft extends into the gearbox and is connected to the sun gear. The drive shaft is rotatably connected to the gearbox, and at least one planet gear is vertically meshed below the sun gear. One end of the auxiliary stirring rod is connected to the axle of the planet gear.

[0007] Furthermore, the drive shaft is coaxially arranged with the main stirring rod.

[0008] Furthermore, the lubrication system includes a lubrication channel and a transfer box. The transfer box is fixed on the premix tank. The top end of the drive shaft passes through the transfer box and is rotatably connected to the transfer box. A sealing ring is provided between the transfer box and the drive shaft to form two independent annular channels. Two lubrication channels are provided on the drive shaft, and the two lubrication channels are respectively connected to the two annular channels.

[0009] Furthermore, the lubrication system also includes a lubricating oil tank, an oil supply pump, an oil delivery pipe, and an oil return pipe. The lubricating oil tank is located on one side of the transfer box, and an oil supply pump is installed on the upper surface of the lubricating oil tank. The oil delivery pipe connects the oil supply pump and the transfer box in an annular channel, and the oil return pipe connects the lubricating oil tank and the transfer box in another annular channel.

[0010] Furthermore, the two annular channels are respectively an oil inlet annular channel and an oil return annular channel.

[0011] Furthermore, both the first and second drive elements are variable frequency motors, whose speeds can be independently adjusted and controlled.

[0012] Furthermore, the main stirring rod is equipped with frame-type stirring blades.

[0013] Furthermore, the auxiliary stirring rod is provided with multiple layers of blades.

[0014] Furthermore, the upper surface of the premix tank is provided with a feed hopper, and the lower surface of the premix tank is provided with a discharge hopper and no less than three support legs.

[0015] Compared with existing technologies: 1. This application improves mixing efficiency by using a secondary stirring rod to work in conjunction with the main stirring rod.

[0016] 2. By setting up a planetary gear set, this application enables the auxiliary stirring rod to rotate on its own while rotating with the main stirring rod, thereby improving the stirring and mixing efficiency and reducing the mixing time.

[0017] 3. This application, through the setting of the lubrication system, can automatically pump lubricating oil into the high-speed rotating planetary gear set for lubrication and cooling, and realize circulation backflow, effectively reducing gear wear, improving the service life and operational stability of transmission components, and reducing maintenance frequency and cost. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a front sectional view of this application; Figure 3 for Figure 2 A magnified view of part A in the image; Figure 4 for Figure 2 A magnified view of part B in the image; Figure 5 for Figure 2 A sectional view of CC.

[0019] In the diagram: 1. Premixing tank; 2. First drive element; 3. Main stirring rod; 4. Second drive element; 5. Auxiliary stirring rod; 6. Planetary gear set; 61. Gearbox; 62. Sun gear; 63. Planetary gears; 7. Lubrication system; 71. Lubrication channel; 72. Transfer box; 721. Oil inlet annular channel; 722. Oil return annular channel; 73. Lubricating oil tank; 74. Oil supply pump; 75. Oil delivery pipe; 76. Oil return pipe; 8. Drive shaft. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 2 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0021] Please see Figure 1-5 This application provides a technical solution for a premixing device for producing alcohol-based coatings: a premixing device for producing alcohol-based coatings includes a premixing tank 1, a main stirring rod 3 installed in the premixing tank 1, and a first driving element 2 for driving the main stirring rod 3 to rotate. The upper surface of the premixing tank 1 is provided with a feeding hopper for adding raw materials; the lower surface of the premixing tank 1 is provided with a discharge hopper and no less than three support legs for unloading and stable support.

[0022] The main stirring rod 3 is vertically installed inside the premixing tank 1, and its lower end is equipped with a frame-type stirring blade for large-scale overall mixing. The first driving element 2 (in this example, a variable frequency motor) is installed at the bottom of the premixing tank 1 and connected to the main stirring rod 3 via a coupling, for driving the main stirring rod 3 to rotate.

[0023] The upper surface of the main stirring rod 3 is fixed with a planetary gear set 6 that connects to the auxiliary stirring rod 5. There are two auxiliary stirring rods 5, which are evenly distributed on both sides of the planetary gear set 6. The planetary gear set 6 is configured so that the auxiliary stirring rod 5 can revolve around the main stirring rod 3 as the center while rotating on its own axis.

[0024] The planetary gear set 6 is equipped with a drive shaft 8 for transmitting power to the auxiliary stirring rod 5. The drive shaft 8 passes through the premix tank 1 and is connected to the second drive element 4 installed on the premix tank 1. Both the first drive element 2 and the second drive element 4 are variable frequency motors, and their speeds can be independently adjusted and controlled.

[0025] A gearbox 61 is fixed to the upper surface of the main stirring rod 3 via a flange or welding, forming the housing of the planetary gear set 6. The drive shaft 8 is coaxially arranged with the main stirring rod 3, its lower end passing through the top cover of the premixing tank 1 and extending into the gearbox 61. The drive shaft 8 is rotatably connected to the top cover of the premixing tank 1 and to the gearbox 61 via bearings. The top end of the drive shaft 8 is connected to a second drive element 4 (in this example, a variable frequency motor) mounted on the premixing tank 1.

[0026] Furthermore, the planetary gear set 6 includes a gearbox 61, a sun gear 62, and planet gears 63. The gearbox 61 is fixed on the main stirring rod 3. The drive shaft 8 extends into the gearbox 61 and is connected to the sun gear 62. The drive shaft 8 is rotatably connected to the gearbox 61. At least one planet gear 63 is vertically meshed below the sun gear 62. One end of the auxiliary stirring rod 5 is connected to the axle of the planet gear 63.

[0027] The number of planetary gears 63 is the same as the number of auxiliary stirring rods 5, both being two. The auxiliary stirring rods 5 are equipped with multiple layers of blades to increase the local stirring intensity.

[0028] Both the sun gear 62 and planet gears 63 are bevel gears. When the second drive element 4 drives the sun gear 62 to rotate via the drive shaft 8, it will cause the two planet gears 63 and their connected auxiliary stirring rods 5 to rotate around their own axes (rotation). Simultaneously, when the first drive element 2 drives the main stirring rod 3 to rotate, it will cause the entire gearbox 61 (as a planet carrier) to rotate, thereby causing the two auxiliary stirring rods 5 to rotate around the axis of the main stirring rod 3 (revolution). By independently adjusting the speeds of the two variable frequency motors, any ratio of revolution and rotation speeds can be achieved.

[0029] To ensure the long service life and stable operation of the planetary gear set 6, a lubrication system 7 is also provided on the drive shaft 8 to provide lubrication for the planetary gear set 6.

[0030] Furthermore, the lubrication system 7 includes a lubrication channel 71 and a transfer box 72. The transfer box 72 is fixed on the premix tank 1. The top end of the drive shaft 8 passes through the transfer box 72 and is rotatably connected to the transfer box 72. A sealing ring is provided between the transfer box 72 and the drive shaft 8 to form two independent annular channels. The two annular channels are an oil inlet annular channel 721 and an oil return annular channel 722, respectively.

[0031] Two lubrication channels 71 are provided on the drive shaft 8. The two lubrication channels 71 are connected to two annular channels respectively. The upper inlets of the two lubrication channels 71 on the drive shaft 8 are connected to the two annular channels respectively, and the lower outlets lead to the inside of the gearbox 61.

[0032] Furthermore, the lubrication system 7 also includes a lubricating oil tank 73, an oil supply pump 74, an oil delivery pipe 75, and an oil return pipe 76. The lubricating oil tank 73 is located on one side of the transfer box 72. The oil supply pump 74 is installed on the upper surface of the lubricating oil tank 73. The oil delivery pipe 75 connects the oil supply pump 74 and the oil inlet annular channel 721 on the transfer box 72. The oil return pipe 76 connects the lubricating oil tank 73 and the oil return annular channel 722 on the transfer box 72.

[0033] During operation, the oil supply pump 74 pumps lubricating oil into the inlet annular channel 721. The lubricating oil flows into the gearbox 61 through the corresponding lubrication channel 71 to lubricate and cool the gears. After the lubricating oil is collected, it returns to the lubricating oil tank 73 through another lubrication channel 71 and the return annular channel 722, and then through the return pipe 76, thus achieving circulating lubrication.

[0034] In operation: Raw materials are fed into premix tank 1 through the feed hopper, activating the first drive element 2 and the second drive element 4. The main stirring rod 3, driven by its revolution, performs low-speed, wide-range mixing, while the two auxiliary stirring rods 5, driven by the planetary gear set 6, rotate at high speed while simultaneously revolving with the main stirring rod 3, generating strong shearing and convective mixing effects on the materials. This combined revolution and rotation ensures thorough mixing of the materials within the tank in the radial, axial, and circumferential directions, greatly improving premixing efficiency and effectiveness. After mixing is complete, the material is discharged from the bottom discharge hopper.

[0035] During the mixing process, the oil supply pump 74 pumps lubricating oil into the oil inlet annular channel 721. The lubricating oil flows into the gearbox 61 through the corresponding lubrication channel 71 to lubricate and cool the gears. After the lubricating oil is collected, it returns to the lubricating oil tank 73 through another lubrication channel 71 and the return annular channel 722, and then through the return pipe 76 to achieve circulating lubrication.

[0036] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A premixing device for alcohol-based paint production, comprising a premixing tank (1), a main stirring rod (3) installed in the premixing tank (1), a first driving element (2) for driving the main stirring rod (3) to rotate, characterized in that: It also includes a secondary stirring rod (5), and a planetary gear set (6) connecting the secondary stirring rod (5) is fixed on the upper surface of the main stirring rod (3). There are two secondary stirring rods (5), which are evenly distributed on both sides of the planetary gear set (6). The planetary gear set (6) is provided with a drive shaft (8) for transmitting power to the secondary stirring rod (5). The drive shaft (8) passes through the premix tank (1) and is connected to the second drive element (4) installed on the premix tank (1). The planetary gear set (6) is configured such that the auxiliary stirring rod (5) can revolve around the main stirring rod (3) while rotating on its own axis; a lubrication system (7) is also provided to lubricate the planetary gear set (6).

2. The premixing device for alcohol-based paint production according to claim 1, characterized in that: The planetary gear set (6) includes a gearbox (61), a sun gear (62), and planet gears (63). The gearbox (61) is fixed on the main stirring rod (3). The drive shaft (8) extends into the gearbox (61) and is connected to the sun gear (62). The drive shaft (8) is rotatably connected to the gearbox (61). At least one planet gear (63) is vertically meshed below the sun gear (62). One end of the auxiliary stirring rod (5) is connected to the axle of the planet gear (63).

3. The premixing device for alcohol-based paint production according to claim 2, characterized in that: The drive shaft (8) is coaxially arranged with the main stirring rod (3).

4. The premixing device for alcohol-based paint production according to claim 1, characterized in that: The lubrication system (7) includes a lubrication channel (71) and a transfer box (72). The transfer box (72) is fixed on the premix tank (1). The top end of the drive shaft (8) passes through the transfer box (72) and is rotatably connected to the transfer box (72). A sealing ring is provided between the transfer box (72) and the drive shaft (8) to form two independent annular channels. Two lubrication channels (71) are provided on the drive shaft (8), and the two lubrication channels (71) are respectively connected to the two annular channels.

5. The premixing device for alcohol-based paint production according to claim 4, characterized in that: The lubrication system (7) also includes a lubricating oil tank (73), an oil supply pump (74), an oil delivery pipe (75), and a return oil pipe (76). The lubricating oil tank (73) is located on one side of the transfer box (72). The oil supply pump (74) is located on the upper surface of the lubricating oil tank (73). The oil delivery pipe (75) connects the oil supply pump (74) and the transfer box (72) in an annular channel. The return oil pipe (76) connects the lubricating oil tank (73) and the transfer box (72) in another annular channel.

6. The premixing device for alcohol-based paint production according to any one of claims 4 or 5, characterized in that: The two annular channels are an oil inlet annular channel (721) and an oil return annular channel (722).

7. The premixing device for alcohol-based paint production according to claim 1, characterized in that: The first drive element (2) and the second drive element (4) are both variable frequency motors, and their speeds can be independently adjusted and controlled.

8. The premixing device for alcohol-based paint production according to claim 1, characterized in that: The main stirring rod (3) is equipped with a frame-type stirring blade.

9. The premixing device for alcohol-based paint production according to claim 1, characterized in that: The auxiliary stirring rod (5) is equipped with multiple layers of blades.

10. The premixing device for alcohol-based paint production according to claim 1, characterized in that: The premix tank (1) is provided with a feed hopper on its upper surface and a discharge hopper and no less than three support legs on its lower surface.

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