Quantitative dosing device for the preparation of pigment pastes
The wall-scraping and disassembly components solved the problem of pigment sticking to the walls in the pigment paste preparation device, achieving full utilization of raw materials and product stability, and improving production efficiency and equipment maintenance convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG MOCAIDE NEW MATERIALS CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-21
AI Technical Summary
In existing pigment paste preparation devices, the limited rotation range of the stirring blades causes pigments to stick to the walls of the storage tank, resulting in raw material waste and uniformity issues, which affect product quality.
The system employs a wall-scraping assembly and a disassembly assembly. The wall-scraping assembly uses a scraper to remove pigment from the inner wall of the storage tank, while the disassembly assembly uses a ball-locking and pusher block to quickly disassemble the screen, preventing it from sticking to the wall and clogging.
It effectively removes residual materials from the inner wall of storage tanks, improves raw material utilization, ensures product purity and stability, simplifies screen replacement, and improves production efficiency.
Smart Images
Figure CN224524656U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pigment paste preparation technology, and in particular to a quantitative dispensing device for pigment paste preparation. Background Technology
[0002] In industries such as coatings, inks, and plastic coloring, the quality of pigment pastes directly determines the appearance and performance of the final products. During the preparation of pigment pastes, precise proportioning of raw materials, thorough mixing, and impurity filtration are crucial for ensuring their quality. A quantitative batching device for pigment paste preparation serves as the core equipment for achieving these steps, and its performance significantly impacts production efficiency and product consistency. As market demands for pigment paste quality continue to rise, the shortcomings of traditional batching devices in terms of mixing uniformity, raw material utilization, and ease of maintenance are becoming increasingly apparent.
[0003] The existing quantitative batching device for pigment paste preparation mainly consists of a raw material storage tank, a metering component, a conveying pipeline, a batching mechanism, and a control system. The raw material storage tank is used to store various raw materials such as pigments, dispersants, and solvents. The tank is usually equipped with a stirring device, which is driven by a motor to rotate the stirring blades and continuously stir the pigment paste in the storage tank to prevent pigment particles from settling and agglomerating, and to ensure that the raw materials remain in a uniform state before being conveyed. The metering component usually uses a flow meter or a weighing sensor, which, together with a conveying pump, conveys the raw materials in the storage tank to the batching mechanism in proportion. The batching mechanism further mixes the received raw materials and outputs the finished pigment paste through the discharge component. The entire process is coordinated by the control system to achieve semi-automatic production.
[0004] However, in existing technologies, the stirring mechanism inside the raw material storage tank has significant limitations in actual operation. Because pigment paste raw materials often have high viscosity, the rotation range of the stirring blades is limited, only able to agitate the raw materials in the central area of the tank. Raw materials near the tank wall are difficult to agitate fully and are prone to adhering to the tank wall due to prolonged standing, forming a sticky residue. This sticky pigment not only wastes raw materials and increases production costs but also deteriorates due to gradual drying. When it falls off and mixes into new raw materials during subsequent stirring, it disrupts the uniformity of the raw materials, affects the accuracy of the metering ratio, and consequently leads to inconsistent color and unstable performance of the prepared pigment paste, severely restricting the improvement of product quality. Therefore, a quantitative batching device for pigment paste preparation is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above deficiencies, this utility model provides a quantitative dispensing device for preparing pigment paste, which aims to improve the problem of pigment paste sticking to the inner wall of the storage tank in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: A quantitative dispensing device for preparing pigment paste includes a storage tank, a support fixedly connected to the outer wall of the storage tank, a wall scraping assembly disposed inside the storage tank, a discharge pipe fixedly connected to the bottom of the storage tank, a screen disposed on the outer wall of the discharge pipe, a disassembly assembly disposed on the outer wall of the screen, a motor fixedly connected to the top of the storage tank, a rotating column fixedly connected to the output end of the motor, and a stirring rod fixedly connected to the outer wall of the rotating column. The scraping assembly includes a scraper, the outer wall of which is disposed inside the storage tank. A connecting column is fixedly connected to the outer wall of the rotating column. A fixing frame is fixedly connected to one end of the connecting column. The outer wall of the scraper is slidably connected to the inner wall of the fixing frame. A limiting plate is fixedly connected to the outer wall of the scraper. A spring is disposed inside the fixing frame. One end of the spring is fixedly connected to the inner wall of the fixing frame, and the other end of the spring is fixedly connected to the outer wall of the limiting plate. As a further description of the above technical solution: The disassembly assembly includes a retaining ball, the outer wall of which is disposed on the outer wall of the screen, and a guide post is fixedly connected to the inner wall of the screen; As a further description of the above technical solution: The outer wall of the ball is slidably connected to the inner wall of the guide post, and the outer wall of the guide post is slidably connected to the inside of the discharge pipe; As a further description of the above technical solution: The discharge pipe has a groove inside, and the outer wall of the ball is slidably connected to the inner wall of the groove. As a further description of the above technical solution: A push block is slidably connected to the inner wall of the guide post, and a fixing rod is fixedly connected to the inner wall of the guide post; As a further description of the above technical solution: One end of the fixed rod is fixedly connected to a limit block, and a sliding column is slidably connected to the outer wall of the fixed rod; As a further description of the above technical solution: A second spring is sleeved on the outer wall of the fixed rod. One end of the second spring is fixedly connected to the inner wall of the fixed rod, and the other end of the second spring is fixedly connected to the outer wall of the limiting block. As a further description of the above technical solution: The outer wall of the sliding column is fixedly connected to the bottom of the push block, and a groove is provided inside the sliding column.
[0007] This utility model has the following beneficial effects: In this invention, the connecting column drives the fixed frame to rotate, and then the fixed frame drives the scraper to rotate, achieving the effect of scraping off the pigment paste from the inner wall of the storage tank. This avoids the situation where pigment paste, being mostly a high-viscosity material, easily adheres to the inner wall of the container due to standing or insufficient stirring, resulting in material residue. If not cleaned in time, the residue will dry and deteriorate, affecting the purity and stability of subsequent ingredients. This invention removes the attached material, reduces waste, improves the actual utilization rate of raw materials, and lowers production costs.
[0008] In this invention, the screen is quickly disassembled by moving a ball out of the slot and then into the groove. This avoids the problem of screens clogged with solid particles or impurities in pigment pastes after prolonged use. If screen disassembly is cumbersome, cleaning will be delayed. Accumulated blockages not only affect the discharge speed but can also cause screen damage due to increased pressure, and even contaminate filtered pigment paste. Traditional screens often use complex connection methods such as bolt fixing, which require a lot of time for disassembly and installation, leading to frequent and long-term equipment downtime, disrupting the production rhythm, and reducing overall capacity. This invention makes screen cleaning and replacement more convenient, allowing for timely removal of blockages or replacement of worn screens, ensuring that the screen always maintains a good filtration condition. Attached Figure Description
[0009] Figure 1 This is a three-dimensional schematic diagram of a quantitative dispensing device for preparing pigment paste according to the present invention; Figure 2 This is a schematic diagram of the scraper structure of a quantitative dispensing device for preparing pigment paste according to the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of a sieve for a quantitative dispensing device for preparing pigment pastes proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle.
[0010] Legend: 1. Storage tank; 2. Support; 3. Discharge pipe; 4. Screen; 5. Motor; 6. Rotating column; 7. Stirring rod; 8. Connecting column; 9. Fixing frame; 10. Scraper; 11. Limiting plate; 12. Spring 1; 13. Guide column; 14. Push block; 15. Ball clamp; 16. Slot; 17. Fixing rod; 18. Limiting block; 19. Sliding column; 20. Spring 2; 21. Groove. Detailed Implementation
[0011] 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.
[0012] Reference Figures 1-3 An embodiment of this utility model provides a quantitative dispensing device for preparing pigment paste, including a storage tank 1, a support 2 fixedly connected to the outer wall of the storage tank 1, a wall scraping assembly provided inside the storage tank 1, a discharge pipe 3 fixedly connected to the bottom of the storage tank 1, a screen 4 provided on the outer wall of the discharge pipe 3, the screen 4 is used to filter large particulate impurities or undispersed pigment agglomerates in the pigment paste to ensure the quality of the discharge, a disassembly assembly provided on the outer wall of the screen 4, a motor 5 fixedly connected to the top of the storage tank 1, a rotating column 6 fixedly connected to the output end of the motor 5, and a stirring rod 7 fixedly connected to the outer wall of the rotating column 6; The wall scraping assembly includes a scraper 10, the outer wall of which is set inside the storage tank 1. A connecting column 8 is fixedly connected to the outer wall of the rotating column 6. A fixing frame 9 is fixedly connected to one end of the connecting column 8. The outer wall of the scraper 10 is slidably connected to the inner wall of the fixing frame 9. A limiting plate 11 is fixedly connected to the outer wall of the scraper 10. The size of the limiting plate 11 is larger than the opening size of the fixing frame 9. When the scraper 10 slides inside the fixing frame 9, the limiting plate 11 can prevent the scraper 10 from detaching from the fixing frame 9, ensuring the integrity of the wall scraping assembly. A spring 12 is set inside the fixing frame 9. One end of the spring 12 is fixedly connected to the inner wall of the fixing frame 9, and the other end of the spring 12 is fixedly connected to the outer wall of the limiting plate 11. The scraper 10 moves in extension and retraction with the spring 12. The elastic force of the spring 12 always pushes the scraper 10 to stick tightly to the inner wall of the storage tank 1. When the rotating column 6 drives the fixing frame 9 to rotate, the scraper 10 rotates synchronously and scrapes off the material attached to the inner wall, thereby avoiding material residue and improving the utilization rate of raw materials.
[0013] Reference Figure 1 , and 4 and Figure 5The disassembly assembly includes a retaining ball 15, the outer wall of which is set on the outer wall of the screen 4. A guide post 13 is fixedly connected to the inner wall of the screen 4. The outer wall of the retaining ball 15 is slidably connected to the inner wall of the guide post 13. The outer wall of the guide post 13 is slidably connected to the inside of the discharge pipe 3. A slot 16 is provided inside the discharge pipe 3. The slot 16 matches the size of the retaining ball 15 and is used to retain the retaining ball 15 to fix the screen 4. The outer wall of the retaining ball 15 is slidably connected to the inner wall of the slot 16. A push block 14 is slidably connected to the inner wall of the guide post 13. 4. A fixed rod 17 is fixedly connected to the inner wall of the guide post 13 to push the ball 15 out of the slot 16. One end of the fixed rod 17 is fixedly connected to a limit block 18, which is set at the end of the fixed rod 17 to fix one end of the second spring 20 and prevent the second spring 20 from shaking. A sliding post 19 is slidably connected to the outer wall of the fixed rod 17. The second spring 20 is sleeved on the outer wall of the fixed rod 17. One end of the second spring 20 is fixedly connected to the inner wall of the fixed rod 17, and the other end of the second spring 20 is fixedly connected to the outer wall of the limit block 18. The outer wall of the sliding column 19 is fixedly connected to the bottom of the push block 14. A groove 21 is provided inside the sliding column 19. When the sliding column 19 slides to a specific position, the groove 21 corresponds to the retaining ball 15, providing space for the retaining ball 15. When the screen 4 needs to be disassembled, the push block 14 is pushed, causing the sliding column 19 to move. The spring 20 is compressed, and the groove 21 on the sliding column 19 moves to the position corresponding to the retaining ball 15. Under its own force, the retaining ball 15 moves out of the groove 1. The screen 4 slides out into the groove 21, releasing the fixed relationship between the screen 4 and the discharge pipe 3, allowing the screen 4 to be quickly removed. When installing the screen 4, the push block 14 is released, the spring 20 returns to its original state, and pushes the sliding column 19 and the push block 14 to reset. The push block 14 pushes the retaining ball 15 out of the groove 21, and the retaining ball 15 is re-entered into the retaining groove 16 on the discharge pipe 3, completing the fixing of the screen 4. This achieves the effect of quick disassembly and installation of the screen 4, greatly improving the efficiency of cleaning and replacing the screen 4.
[0014] Working principle: When the motor 5 drives the rotating column 6 to rotate, the connecting column 8 rotates through the rotation of the rotating column 6. Then, the rotation of the connecting column 8 drives the scraper 10 to rotate circumferentially on the inner wall of the storage tank 1. When the scraper 10 squeezes the inner wall of the storage tank 1, it slides on the inner wall of the fixed frame 9. Then, the sliding of the scraper 10 drives the limiting plate 11 to slide. Then, the sliding of the limiting plate 11 compresses and rebounds the spring 12. This prevents pigment pastes, which are mostly high-viscosity materials, from adhering to the inner wall of the container due to standing or insufficient stirring, resulting in material residue. If not cleaned in time, the residual material will dry and deteriorate, affecting the purity and stability of subsequent batching.
[0015] When disassembling the screen 4, first push the push block 14 to slide on the inner wall of the guide post 13. Then, the push block 14 drives the sliding post 19 to slide on the outer wall of the fixed rod 17. The sliding of the sliding post 19 compresses the spring 20. Subsequently, the sliding of the sliding post 19 releases the limit on the locking ball 15, allowing the locking ball 15 to move out of the slot 16. Then, when the locking ball 15 moves into the groove 21, it releases the limit on the screen 4. When installing the screen 4, simply insert the guide post 13 into the inner wall of the discharge pipe 3, then release the push block 14. The rebound of the spring 20 drives the sliding post 19 to move in. The screen 4 is then reset, and the ball 15 slides out of the groove 21 through the reset of the sliding column 19. The ball 15 then moves into the slot 16, thus completing the installation of the screen 4. This prevents solid particles or impurities in the pigment paste from becoming clogged after long-term use. If the screen 4 is difficult to disassemble, it will lead to untimely cleaning. The accumulation of blockages will not only affect the discharge speed, but will also cause the screen 4 to break due to increased pressure, and may even contaminate the filtered pigment paste. Traditional screens 4 often use complex connection methods such as bolt fixing. Disassembly and installation require a lot of time, resulting in frequent and long-term machine downtime, disrupting the production rhythm and reducing the overall production capacity.
[0016] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A quantitative dispensing device for preparing pigment paste, comprising a storage tank (1), characterized in that: The storage tank (1) is fixedly connected to the outer wall of the support (2), the storage tank (1) is provided with a wall scraping assembly, the storage tank (1) is fixedly connected to the bottom of the storage tank (1) with a discharge pipe (3), the discharge pipe (3) is provided with a screen (4) on the outer wall, the screen (4) is provided with a disassembly assembly on the outer wall, the storage tank (1) is fixedly connected to the top of the storage tank (1), the output end of the motor (5) is fixedly connected to a rotating column (6), and the rotating column (6) is fixedly connected to a stirring rod (7) on the outer wall. The scraping assembly includes a scraper (10), the outer wall of which is disposed inside the storage tank (1). A connecting column (8) is fixedly connected to the outer wall of the rotating column (6). A fixing frame (9) is fixedly connected to one end of the connecting column (8). The outer wall of the scraper (10) is slidably connected to the inner wall of the fixing frame (9). A limiting plate (11) is fixedly connected to the outer wall of the scraper (10). A spring (12) is disposed inside the fixing frame (9). One end of the spring (12) is fixedly connected to the inner wall of the fixing frame (9), and the other end of the spring (12) is fixedly connected to the outer wall of the limiting plate (11).
2. The quantitative dispensing device for preparing pigment paste according to claim 1, characterized in that: The disassembly assembly includes a retaining ball (15), the outer wall of which is disposed on the outer wall of the screen (4), and a guide column (13) is fixedly connected to the inner wall of the screen (4).
3. The quantitative dispensing device for preparing pigment paste according to claim 2, characterized in that: The outer wall of the ball (15) is slidably connected to the inner wall of the guide post (13), and the outer wall of the guide post (13) is slidably connected to the inside of the discharge pipe (3).
4. The quantitative dispensing device for preparing pigment paste according to claim 3, characterized in that: The discharge pipe (3) has a groove (16) inside, and the outer wall of the ball (15) is slidably connected to the inner wall of the groove (16).
5. The quantitative dispensing device for preparing pigment paste according to claim 4, characterized in that: The inner wall of the guide post (13) is slidably connected to a push block (14), and the inner wall of the guide post (13) is fixedly connected to a fixing rod (17).
6. The quantitative dispensing device for preparing pigment paste according to claim 5, characterized in that: One end of the fixed rod (17) is fixedly connected to a limit block (18), and a sliding column (19) is slidably connected to the outer wall of the fixed rod (17).
7. The quantitative dispensing device for preparing pigment paste according to claim 6, characterized in that: The outer wall of the fixing rod (17) is fitted with a second spring (20), one end of the second spring (20) is fixedly connected to the inner wall of the fixing rod (17), and the other end of the second spring (20) is fixedly connected to the outer wall of the limiting block (18).
8. The quantitative dispensing device for preparing pigment paste according to claim 7, characterized in that: The outer wall of the sliding column (19) is fixedly connected to the bottom of the push block (14), and a groove (21) is provided inside the sliding column (19).