Multi-layer anti-precipitation structure of coating stirring kettle
By employing a multi-layer inclined scraper and vacuum pump structure in the coating mixing tank, the problem of coating sedimentation was solved, achieving uniform mixing and efficient production of coatings, and simplifying the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO WUTIAN NEW MATERIAL CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-19
AI Technical Summary
When dealing with paint sedimentation issues, existing paint mixing tanks have vertically arranged stirring blades that cannot effectively stir the sediment at the bottom, resulting in uneven mixing and affecting paint quality.
The design incorporates a multi-layered inclined scraper structure and discharge gaps with varying spacing. Combined with the coordinated use of the stirring shaft and scraper, it effectively scrapes and guides the sediment from the inner wall and bottom of the vessel. A vacuum pump is added to extract air from the vessel, and a discharge pipe and a feed pipe are provided for convenient material feeding and discharging.
It effectively prevents paint sedimentation, improves mixing uniformity, simplifies operation procedures, increases production efficiency, and ensures paint quality stability.
Smart Images
Figure CN224252600U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coating mixing tank technology, and more specifically, to a multi-layer anti-settling structure for coating mixing tanks. Background Technology
[0002] In the paint production process, the paint mixing tank is a crucial piece of equipment. Its main function is to thoroughly and evenly mix the various components in the paint to ensure the quality stability and performance consistency of the paint product. However, the paint mixing tank currently faces a serious problem of paint sedimentation in actual use, which has brought many troubles to paint manufacturers.
[0003] From the perspective of the characteristics of the coating itself, some coatings contain pigments that are not finely ground, resulting in poor dispersion. In addition, the pigment-to-binder ratio in the formulation is too high, and the density of pigments and fillers is too high. These factors can easily lead to precipitation. At the same time, when an excessive amount of diluent is added, the viscosity of the coating decreases, and its normal surface suspension state is destroyed, causing the pigments and fillers to gradually sink. Furthermore, if a chemical polymerization reaction or mutual adsorption occurs between the pigment and the resin, forming a gel, precipitation will also occur.
[0004] Existing stirred tanks have significant shortcomings in addressing sedimentation issues. The typical stirring method involves an electric motor driving a stirring shaft and welded impellers at the end to rotate, thus uniformly mixing the coating. However, these impellers are mostly vertically arranged, only effectively mixing the coating in their designated areas. They fail to adequately mix the coating that has settled to the bottom or to continue stirring the settled coating to the middle layer, thus affecting the overall mixing effect. Therefore, we propose a multi-layered anti-sedimentation structure for the coating stirred tank. Utility Model Content
[0005] The purpose of this invention is to provide a multi-layer anti-settling structure for a coating mixing tank, so as to solve the defects mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] The multi-layer anti-settling structure of the coating mixing tank includes a tank body, a top cover fixedly installed on the top of the tank body, a stirring motor fixedly installed at the center of the top surface of the top cover, a vertically arranged stirring shaft fixedly installed at the end of the output shaft of the stirring motor, the stirring shaft being inserted into the tank body, two symmetrical stirring blades fixedly installed on the middle rod of the stirring shaft, and a first scraper, a second scraper, and a third scraper fixedly installed sequentially from top to bottom on the bottom rod of the stirring shaft, an upper discharge gap being provided between the first scraper and the second scraper, and a lower discharge gap being provided between the second scraper and the third scraper.
[0008] Preferably, the first scraper, the second scraper, and the third scraper are all inclined upwards at 30° to 60°, and the width of the lower discharge gap increases sequentially from bottom to top.
[0009] Preferably, the sides of the first scraper, the second scraper, and the third scraper are all attached to the side wall of the vessel body, and the bottom of the second scraper is attached to the bottom wall of the vessel body.
[0010] Preferably, a discharge pipe is fixedly installed at the center of the bottom of the vessel, and a discharge valve is fixedly installed on the discharge pipe.
[0011] Preferably, the top cover and the vessel body are fixedly connected by multiple fastening bolts, and multiple feed pipes are fixedly installed on the top cover.
[0012] Preferably, the bottom of the vessel is fixedly equipped with a plurality of support legs arranged in a ring at equal intervals, and the bottom end of the support legs is fixedly equipped with a fixed base.
[0013] Preferably, an electric heater is fixedly installed on the outside of the vessel body, a water inlet flushing pipe is fixedly installed on the top cylinder of the vessel body, and a ball valve is fixedly installed on the water inlet flushing pipe.
[0014] Preferably, a vacuum pump is provided on one side of the vessel body, and the suction end of the vacuum pump is connected to the top cylinder of the vessel body through a suction pipe.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This utility model achieves effective scraping and guiding of the precipitated coating on the inner wall and bottom of the vessel by setting up a multi-layer inclined scraper structure and discharge gaps with different spacing. The scraper is attached to the side wall and bottom of the vessel and, with the inclined angle, can push the precipitated material upward. The discharge gap forms a flow channel to avoid material accumulation, thereby improving the uniformity of coating mixing and reducing sedimentation.
[0017] 2. This utility model achieves convenient feeding and discharging of coatings and equipment maintenance by setting a discharge pipe and discharge valve at the bottom of the vessel, and multiple feed pipes and a detachable top cover at the top. The ring-shaped support legs and fixed base ensure the stability of the vessel. The electric heater can adjust the temperature of the coating and improve its fluidity. The water inlet flushing pipe and ball valve facilitate the cleaning of residual materials, thereby improving production efficiency and simplifying the operation process.
[0018] 3. This utility model achieves effective extraction of air from the vessel during the stirring process by adding a vacuum pump and its suction pipe connected to the top of the vessel, thus preventing air bubbles from mixing into the coating and affecting its quality. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is one of the partial structural schematic diagrams of this utility model;
[0021] Figure 3 This is a second schematic diagram of a partial structure of this utility model;
[0022] The meanings of the labels in the diagram are as follows:
[0023] 1. Reactor body; 10. Top cover; 11. Feed pipe; 12. Discharge pipe; 13. Discharge valve; 14. Support leg; 141. Fixed base; 15. Electric heater; 16. Water inlet flushing pipe; 161. Ball valve; 17. Vacuum pump; 171. Suction pipe;
[0024] 2. Stirring motor; 20. Stirring shaft; 21. Stirring blades; 22. First scraper; 23. Second scraper; 24. Third scraper; 25. Upper discharge gap; 26. Lower discharge gap. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.
[0026] Please see Figures 1-3This utility model provides a technical solution: a multi-layer anti-settling structure for a coating mixing tank, including a tank body 1, a top cover 10 fixedly installed on the top of the tank body 1, a stirring motor 2 fixedly installed at the center of the top surface of the top cover 10, a vertically arranged stirring shaft 20 fixedly installed at the end of the output shaft of the stirring motor 2, the stirring shaft 20 being inserted into the tank body 1, and two symmetrical stirring blades 21 fixedly installed on the middle rod of the stirring shaft 20 to circulate and stir the coating in the middle of the tank body 1; a first scraper 22, a second scraper 23, and a third scraper 24 are fixedly installed sequentially from top to bottom on the bottom rod of the stirring shaft 20, the first scraper 22 and the second scraper 24... An upper discharge gap 25 is provided between the first scraper 22 and the second scraper 23, and a lower discharge gap 26 is provided between the second scraper 23 and the third scraper 24. The first scraper 22, the second scraper 23 and the third scraper 24 are all inclined upward at 30°~60°. The sides of the first scraper 22, the second scraper 23 and the third scraper 24 are attached to the side wall of the vessel body 1, and the bottom of the second scraper 23 is attached to the bottom wall of the vessel body 1. As the first scraper 22, the second scraper 23 and the third scraper 24 rotate, the material settled at the bottom and on the wall of the vessel body 1 is pushed upward and re-mixed into the stirring flow field through the upper discharge gap 25 and the lower discharge gap 26, effectively preventing coating deposition.
[0027] In this embodiment, the width of the lower discharge gap 26 increases sequentially from bottom to top, making it easier for the scraped sediment to slide and diffuse along the inclined surfaces of the upper surfaces of the first scraper 22, the second scraper 23, and the third scraper 24, thus avoiding clogging the gap. At the same time, the change in gap width guides the material to form a stratified flow, enhancing the anti-sedimentation effect.
[0028] Specifically, a discharge pipe 12 is fixedly installed at the center of the bottom of the vessel 1, and a discharge valve 13 is fixedly installed on the discharge pipe 12, so that the uniformly stirred coating can be discharged quickly and the residue can be reduced.
[0029] Furthermore, the top cover 10 is fixedly connected to the vessel body 1 by multiple fastening bolts, and multiple feed pipes 11 are fixedly installed on the top cover 10 to realize efficient material entry and exit and convenient disassembly and maintenance of the equipment.
[0030] In addition, a number of support legs 14 arranged in a ring at equal intervals are fixedly installed at the bottom of the vessel body 1. A fixed base 141 is fixedly installed at the bottom end of the support legs 14 to provide stable support for the vessel body 1 and prevent shaking during stirring from affecting the mixing effect.
[0031] It is worth noting that an electric heater 15 is fixedly installed on the outside of the vessel body 1, which can perform electric heating operation; a water inlet flushing pipe 16 is fixedly installed on the top cylinder of the vessel body 1, and a ball valve 161 is fixedly installed on the water inlet flushing pipe 16, so that water can be passed through for flushing operation after the preparation is completed.
[0032] It is worth noting that a vacuum pump 17 is provided on one side of the vessel body 1. The suction end of the vacuum pump 17 is connected to the top cylinder of the vessel body 1 through a suction pipe 171, which can remove the internal air to form a negative pressure, prevent air bubbles from mixing in and improve the density of the coating mixture.
[0033] Finally, it should be noted that the stirring motor 2 and vacuum pump 17 involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the spare parts of this device, all the above-mentioned electrical components, which refer to power elements, electrical components and matching controllers and power supplies, are connected by wires. The specific connection method should refer to the working principle of this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.
[0034] When using the multi-layer anti-settling structure of the coating mixing tank of this utility model, the coating to be mixed is injected into the tank through the feed pipe 11, the stirring motor 2 is started, which drives the stirring shaft 20 to rotate, and drives the stirring blade 21 to form a circulating stirring in the middle of the tank body 1. At the same time, the first scraper 22, the second scraper 23 and the third scraper 24 at the bottom rotate synchronously.
[0035] During the mixing process, the inclined first scraper 22, second scraper 23 and third scraper 24 are attached to the side wall and bottom wall of the vessel body 1 respectively, pushing the precipitated material upward along the inclined surface of the upper surface of the first scraper 22, second scraper 23 and third scraper 24, and re-mixing it into the flow field through the upper discharge gap 25 and lower discharge gap 26 to prevent sedimentation; when vacuuming is required, the vacuum pump 17 is started to discharge the air in the vessel through the suction pipe 171 to improve the mixing density;
[0036] After mixing, open the discharge valve 13 and the coating is discharged from the bottom of the vessel 1 through the discharge pipe 12. After the discharge is completed, close the discharge valve 13 and open the ball valve 161 on the water inlet flushing pipe 16 to flush the residual coating on the inner wall of the vessel 1 with clean water. After flushing is completed, close the ball valve 161.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A multi-layer anti-settling structure for a coating mixing tank, comprising a tank body (1), characterized in that: A top cover (10) is fixedly installed on the top of the vessel body (1). A stirring motor (2) is fixedly installed at the center of the top surface of the top cover (10). A stirring shaft (20) is fixedly installed at the end of the output shaft of the stirring motor (2). The stirring shaft (20) is inserted into the vessel body (1). Two symmetrical stirring blades (21) are fixedly installed on the middle rod of the stirring shaft (20). A first scraper (22), a second scraper (23), and a third scraper (24) are fixedly installed from top to bottom on the bottom rod of the stirring shaft (20). An upper discharge gap (25) is provided between the first scraper (22) and the second scraper (23). A lower discharge gap (26) is provided between the second scraper (23) and the third scraper (24).
2. The multi-layer anti-settling structure of the coating mixing tank according to claim 1, characterized in that: The first scraper (22), the second scraper (23) and the third scraper (24) are all inclined upward at 30°~60°, and the width of the lower discharge gap (26) increases sequentially from bottom to top.
3. The multi-layer anti-settling structure of the coating mixing tank according to claim 1, characterized in that: The sides of the first scraper (22), the second scraper (23) and the third scraper (24) are all attached to the side wall of the vessel body (1), and the bottom of the second scraper (23) is attached to the bottom wall of the vessel body (1).
4. The multi-layer anti-settling structure of the coating mixing tank according to claim 1, characterized in that: A discharge pipe (12) is fixedly installed at the center of the bottom of the vessel body (1), and a discharge valve (13) is fixedly installed on the discharge pipe (12).
5. The multi-layer anti-settling structure of the coating mixing tank according to claim 1, characterized in that: The top cover (10) is fixedly connected to the vessel body (1) by a number of fastening bolts, and a number of feed pipes (11) are fixedly installed on the top cover (10).
6. The multi-layer anti-settling structure of the coating mixing tank according to claim 1, characterized in that: The bottom of the vessel body (1) is fixedly equipped with a plurality of support legs (14) arranged in a ring at equal intervals, and the bottom end of the support legs (14) is fixedly equipped with a fixed base (141).
7. The multi-layer anti-settling structure of the coating mixing tank according to claim 1, characterized in that: An electric heater (15) is fixedly installed on the outside of the vessel body (1), and a water inlet flushing pipe (16) is fixedly installed on the top cylinder of the vessel body (1). A ball valve (161) is fixedly installed on the water inlet flushing pipe (16).
8. The multi-layer anti-settling structure of the coating mixing tank according to claim 1, characterized in that: A vacuum pump (17) is provided on one side of the vessel body (1), and the suction end of the vacuum pump (17) is connected to the top cylinder of the vessel body (1) through a suction pipe (171).