A pearl pigment fractionating and screening device

Abstract

This utility model relates to a pearlescent pigment grading and screening device, belonging to the field of pearlescent pigment production technology. It includes a screening tank, a feeding hopper, a discharge pipe, and a controller. From top to bottom, a primary screen, a secondary screen, and a tertiary screen are fixedly connected to the inner surface of the screening tank. A primary discharge pipe is fixedly connected to the bottom of the primary screen, a secondary discharge pipe to the bottom of the secondary screen, and a tertiary discharge pipe to the bottom of the tertiary screen. A pushing mechanism is installed in the middle of the screening tank. Through the arrangement of the primary, secondary, and tertiary screens and the pushing mechanism, this utility model enables the pearlescent pigment to be graded and screened. The pushing mechanism allows the pearlescent pigment to roll on the upper surfaces of the primary, secondary, and tertiary screens, preventing accumulation on these screens, shortening the screening time, and improving screening efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of pearlescent pigment production technology, specifically relating to a pearlescent pigment grading and screening device. Background Technology

[0002] In the production process of pearlescent pigments, grading and screening is a crucial step, mainly for the following reasons: controlling optical effects and color consistency: Particle size determines optical properties: the gloss, shimmer, hiding power, transparency, and hue saturation of pearlescent pigments are all highly dependent on the particle size of the pigment particles; coarse particles: produce a strong shimmering, dotted luster, weak hiding power, low transparency, and relatively low color saturation; suitable for applications requiring a strong metallic shimmer effect; medium particles: provide a balanced gloss and hiding power, and are within the size range of many standard pearlescent powders; fine particles: produce a silky, soft luster, high hiding power, high transparency, higher color saturation, and a smoother surface; suitable for applications requiring a delicate luster and high hiding power.

[0003] Currently, in the production process of pearlescent pigments, the particle size distribution in ungraded batches of pigments is very wide. This can lead to different sizes of pigment particles in different locations within the same batch or even the same can of product. Since pearlescent pigments of different particle sizes are used to produce different products, it is necessary to grade and screen pearlescent pigments during the production process in order to produce different products. Based on this, a pearlescent pigment grading and screening device is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a simple and reasonably designed pearlescent pigment grading and screening device to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A pearlescent pigment grading and screening device includes a screening tank, a feeding hopper, a ash discharge pipe, and a controller. The inner surface of the screening tank is fixedly connected with a primary screen, a secondary screen, and a tertiary screen from top to bottom. A primary discharge pipe is fixedly connected to the bottom of the primary screen, a secondary discharge pipe is fixedly connected to the bottom of the secondary screen, and a tertiary discharge pipe is fixedly connected to the bottom of the tertiary screen. A pushing mechanism is installed in the middle of the screening tank.

[0007] As a further optimization of this utility model, the pushing mechanism includes a motor fixedly connected to the top of the screening tank, a rotating shaft fixedly connected to the output end of the motor, a pushing plate fixedly connected to the outer surface of the rotating shaft at an incline, and the rotating shaft passing through the primary screen, the secondary screen and the tertiary screen and being rotatably and sealed to the primary screen, the secondary screen and the tertiary screen.

[0008] As a further optimization of this utility model, the pusher plate is configured as three groups, and each group of pusher plates is respectively attached to the top of the primary screen, the secondary screen and the tertiary screen.

[0009] As a further optimization of this utility model, the rotating shaft is hollow, and the bottom of the rotating shaft is sealed and rotatably connected to the inner bottom of the screening tank. An air pump is fixedly connected to the bottom of the screening tank, and the air pump is connected to the inside of the rotating shaft. An air extraction pipe is fixedly connected to the bottom of the air pump, and an air blowing pipe is fixedly connected to the rotating shaft. The air blowing pipe is fixedly connected to the pusher plate, and an air blowing hole is opened on the air blowing pipe.

[0010] As a further optimization of this utility model, the primary discharge pipe, the secondary discharge pipe and the tertiary discharge pipe are all fixedly connected to the screening tank through the pipe.

[0011] As a further optimization of this utility model, the feeding hopper is fixedly connected to the top of the screening tank, the observation window is installed on the screening tank, the controller is fixedly connected to the screening tank, and the ash discharge pipe is fixedly connected to the bottom of the screening tank.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention utilizes a primary, secondary, and tertiary screen, along with a feeding mechanism. The primary, secondary, and tertiary screens enable the pearlescent pigments to be graded and screened, while the feeding mechanism allows the pearlescent pigments to roll on the upper surfaces of the primary, secondary, and tertiary screens, preventing accumulation and shortening the screening time, thus improving screening efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model from a bottom view;

[0016] Figure 3 This is a three-dimensional partial cross-sectional front view of the present invention.

[0017] Figure 4 This is a three-dimensional partial cross-sectional view of the structure of this utility model from below.

[0018] In the diagram: 1. Screening tank; 2. Observation window; 3. Feeding hopper; 4. Controller; 5. Ash discharge pipe; 6. Motor; 7. Rotating shaft; 8. Pusher plate; 9. Air blowing pipe; 10. Air blowing hole; 11. Air pump; 12. Air extraction pipe; 13. Primary screen; 14. Secondary screen; 15. Tertiary screen; 16. Primary discharge pipe; 17. Secondary discharge pipe; 18. Tertiary discharge pipe. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example:

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a pearlescent pigment grading and screening device includes a screening tank 1, a feeding hopper 3, an ash discharge pipe 5, and a controller 4. The feeding hopper 3 is fixedly connected to the top of the screening tank 1. An observation window 2 is installed on the screening tank 1. The screening tank 1 is configured with four layers, and the observation windows 2 are installed on the upper three layers of the screening tank 1. The observation windows 2 are designed to facilitate personnel observation of the screening status of the pearlescent pigments in the screening tank 1. The controller 4 is fixedly connected to the screening tank 1. The ash discharge pipe 5 is fixedly connected to the bottom of the screening tank 1. From top to bottom, a primary screen 13, a secondary screen 14, and a tertiary screen 15 are fixedly connected to the inner surface of the screening tank 1. The aperture of the primary screen 13 is larger than that of the secondary screen 14, and the aperture of the secondary screen 14 is larger than that of the tertiary screen 15. 5. A pushing mechanism is installed in the middle of the screening tank 1. The bottom of the primary screen 13 is fixedly connected to the primary discharge pipe 16. A solenoid valve is installed in the end of the primary discharge pipe 16 that is fixedly connected to the primary screen 13. The bottom of the secondary screen 14 is fixedly connected to the secondary discharge pipe 17. A solenoid valve is installed in the end of the secondary discharge pipe 17 that is fixedly connected to the secondary screen 14. The bottom of the tertiary screen 15 is fixedly connected to the tertiary discharge pipe 18. A solenoid valve is installed in the end of the tertiary discharge pipe 18 that is fixedly connected to the tertiary screen 15. The primary discharge pipe 16, the secondary discharge pipe 17, and the tertiary discharge pipe 18 are all fixedly connected to the screening tank 1. The solenoid valves are all electrically connected to the controller 4 and are controlled by the controller 4.

[0022] During use, close the solenoid valves in the primary discharge pipe 16, secondary discharge pipe 17, and tertiary discharge pipe 18. Place pigment collection boxes in the primary discharge pipe 16, secondary discharge pipe 17, and tertiary discharge pipe 18 respectively. Add the pearlescent pigment to be screened into the screening tank 1 through the feeding hopper 3. Then, start the pushing mechanism so that coarse particles in the pearlescent pigment remain on the upper surface of the primary screen 13, medium particles remain on the upper surface of the secondary screen 14, and fine particles remain on the upper surface of the tertiary screen 15. Dust and other impurities in the pearlescent pigment will fall to the bottom of the screening tank 1 and be discharged through the ash discharge pipe 5. After the screening time is reached, open the solenoid valves in the primary discharge pipe 16, secondary discharge pipe 17, and tertiary discharge pipe 18 so that pigments of different particle sizes fall into different pigment collection boxes. After the discharge is completed, the pushing mechanism can be closed.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the feeding mechanism includes a motor 6 fixedly connected to the top of the screening tank 1. The motor 6 is electrically connected to the controller 4 and controlled by the controller 4. The output end of the motor 6 is fixedly connected to a rotating shaft 7. The bottom of the rotating shaft 7 is sealed and rotatably connected to the inner bottom of the screening tank 1. The rotating shaft 7 passes through the primary screen 13, the secondary screen 14 and the tertiary screen 15 and is sealed and rotatably connected to the primary screen 13, the secondary screen 14 and the tertiary screen 15. An inclined feeding plate 8 is fixedly connected to the outer surface of the rotating shaft 7. The end of the feeding plate 8 is attached to the inner surface of the screening tank 1. The feeding plate 8 is set in three groups, and each group of feeding plates 8 is attached to the top of the primary screen 13, the secondary screen 14 and the tertiary screen 15 respectively.

[0024] After the pearlescent pigment is added, the motor 6 is started to make the rotating shaft 7 rotate, which in turn drives the pusher plate 8 to rotate. The pusher plate 8 will push the pigment on the upper surface of the primary screen 13, the secondary screen 14 and the tertiary screen 15, so that the pigment can roll, avoid pigment accumulation, shorten the screening time of the pearlescent pigment and improve the screening efficiency.

[0025] like Figure 2 , Figure 3 and Figure 4 As shown, the rotating shaft 7 is hollow. An air pump 11 is fixedly connected to the bottom of the screening tank 1. The air pump 11 is electrically connected to the controller 4 and is controlled by the controller 4. The air pump 11 is internally connected to the rotating shaft 7. An air extraction pipe 12 is fixedly connected to the bottom of the air pump 11. An air blowing pipe 9 is fixedly connected to the rotating shaft 7. The air blowing pipe 9 is fixedly connected to the pusher plate 8. An air blowing hole 10 is opened on the air blowing pipe 9. The diameter of the air blowing hole 10 is smaller than the minimum particle size of the pearlescent pigment.

[0026] Simultaneously with starting the motor 6, the air pump 11 is activated, drawing in outside air through the suction pipe 12 and injecting it into the hollow rotating shaft 7. The air then enters the blowing pipe 9 and is blown out through the blowing hole 10, acting on the pearlescent pigment to cool it down and prevent it from melting and clumping due to frictional heating. In addition, the gas discharged from the blowing hole 10 will flow upward and pass through the primary screen 13 and the secondary screen 14, clearing the holes of the primary and secondary screens and preventing them from becoming clogged. This also allows the dust inside the pearlescent pigment to be blown out, improving the cleanliness of the pearlescent pigment.

[0027] It should be noted that in this pearlescent pigment grading and screening device, the controller 4 controls the solenoid valve, motor 6 and air pump 11 through a PLC program, and the specific models of the controller 4, solenoid valve, motor 6 and air pump 11 can be selected according to the actual usage requirements.

[0028] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A pearlescent pigment grading and screening device, comprising a screening tank (1), a feeding hopper (3), an ash discharge pipe (5), and a controller (4), characterized in that: The inner surface of the screening tank (1) is fixedly connected from top to bottom with a primary screen (13), a secondary screen (14) and a tertiary screen (15). The bottom of the primary screen (13) is fixedly connected with a primary discharge pipe (16), the bottom of the secondary screen (14) is fixedly connected with a secondary discharge pipe (17), and the bottom of the tertiary screen (15) is fixedly connected with a tertiary discharge pipe (18). A pushing mechanism is installed in the middle of the screening tank (1).

2. The pearlescent pigment grading and screening device according to claim 1, characterized in that: The pushing mechanism includes a motor (6) fixedly connected to the top of the screening tank (1). The output end of the motor (6) is fixedly connected to a rotating shaft (7). The outer surface of the rotating shaft (7) is fixedly connected to a pushing plate (8) that is inclined. The rotating shaft (7) passes through the primary screen (13), the secondary screen (14) and the tertiary screen (15) and is sealed and rotatably connected to the primary screen (13), the secondary screen (14) and the tertiary screen (15).

3. The pearlescent pigment grading and screening device according to claim 2, characterized in that: The pusher plate (8) is set in three groups, and each group of pusher plates (8) is attached to the top of the first-level screen (13), the second-level screen (14) and the third-level screen (15).

4. The pearlescent pigment grading and screening device according to claim 2, characterized in that: The rotating shaft (7) is hollow. The bottom of the rotating shaft (7) is sealed and rotatably connected to the inner bottom of the screening tank (1). An air pump (11) is fixedly connected to the bottom of the screening tank (1). The air pump (11) is internally connected to the rotating shaft (7). An air extraction pipe (12) is fixedly connected to the bottom of the air pump (11). An air blowing pipe (9) is fixedly connected to the rotating shaft (7). The air blowing pipe (9) is fixedly connected to the pusher plate (8). An air blowing hole (10) is opened on the air blowing pipe (9).

5. The pearlescent pigment grading and screening device according to claim 1, characterized in that: The primary discharge pipe (16), secondary discharge pipe (17) and tertiary discharge pipe (18) are all fixedly connected to the screening tank (1).

6. The pearlescent pigment grading and screening device according to claim 1, characterized in that: The feeding hopper (3) is fixedly connected to the top of the screening tank (1), the observation window (2) is installed on the screening tank (1), the controller (4) is fixedly connected to the screening tank (1), and the ash discharge pipe (5) is fixedly connected to the bottom of the screening tank (1).

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