Self-repairing waterproof coating preparation device

Abstract

The utility model belongs to the technical field of paint preparation, specifically relates to the structural optimization of preparation device, a kind of self-repairing waterproof paint preparation device, including shell, first stirring member and second stirring member being arranged in the shell and the driving structure being arranged in the shell outside;The first stirring member is parallel to the inboard wall of the shell, the second stirring member is perpendicular to the inboard wall of the shell, and the second stirring member is located at the lower end of the first stirring member;The driving structure can drive the first stirring member, second stirring member rotation respectively.The utility model is optimized by structure, to overcome the problem that powder precipitates and settles, improve the uniformity of paint particle size distribution, improve paint quality.

Description

Technical Field

[0001] This utility model belongs to the field of coating preparation technology, specifically involving the structural optimization of preparation equipment. Background Technology

[0002] To improve the reliability and durability of waterproofing layers, the concept of self-healing has been introduced into the field of waterproofing materials. Self-healing waterproofing coatings are a new type of intelligent material capable of automatically repairing microscopic cracks and restoring waterproofing function after damage. Currently, based on different repair mechanisms, they are mainly divided into two categories: intrinsic self-healing and extrinsic self-healing. Extrinsic self-healing typically achieves this by introducing microcapsules, fibrous channels, or functional nanomaterials containing repair agents into the coating matrix. When cracks appear in the coating, the microcapsules rupture, releasing the repair agent, which seals the cracks through reactions such as polymerization, cross-linking, or crystallization. Intrinsic self-healing, on the other hand, relies on the reversible chemical bonds, molecular diffusion, or migration of active substances inherent in the material itself to achieve repair.

[0003] Regardless of the type of self-healing waterproof coating, all raw materials must be thoroughly mixed to form a fine slurry. Therefore, the equipment used to prepare the raw materials is one of the key pieces of equipment.

[0004] The document with authorization announcement number CN223127789U discloses a device for preparing anti-seepage and waterproof coatings, including an upper feed shell, a fixed frame fixedly connected to the top of the upper feed shell, a motor fixedly connected to the top of the fixed frame, a rotating shaft one fixedly connected to the output end of the motor, a large gear fixedly connected to the outer wall of the top of the rotating shaft one, a rotating shaft two rotatably connected to the bottom of the upper feed shell, a small gear fixedly connected to the top of the rotating shaft two, the outer wall of the small gear meshing with the outer wall of the large gear, and stirring rods uniformly fixedly connected to the outer walls of the rotating shaft one and rotating shaft two. This device can reduce dead zones and improve the mixing effect.

[0005] However, this device also has the following drawbacks: a key step in preparing the waterproof coating is the mixing of the polymer emulsion with the slurry made from powdered material. Due to the low stability of the polymer emulsion, the stirring shaft needs to be switched to a low-speed stirring state. Under low-speed stirring, it is difficult to fully mix the highly viscous mixture, and because the density of the slurry is greater than that of the polymer emulsion, the denser powder is prone to precipitate and settle at the bottom of the equipment, affecting the quality of the final coating. Utility Model Content

[0006] To address the aforementioned problems, the purpose of this invention is to provide a self-healing waterproof coating preparation device. Through structural optimization, it aims to overcome the problems of powder precipitation and sedimentation, improve the uniformity of coating particle size distribution, and enhance coating quality.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A self-healing waterproof coating preparation device includes a housing, a first stirring member and a second stirring member disposed within the housing, and a drive structure disposed outside the housing; the first stirring member is parallel to the inner wall of the housing, the second stirring member is perpendicular to the inner wall of the housing, and the second stirring member is located at the lower end of the first stirring member; the drive structure can drive the first stirring member and the second stirring member to rotate respectively.

[0008] As a further preferred embodiment of the present invention, the drive structure includes a housing disposed at the upper end of the housing, a driven bevel gear disposed in the housing and used for connection with the first stirring member, a driving bevel gear disposed in the housing and used for meshing with the driven bevel gear, and a rotating shaft disposed on the outer wall of the housing and used for connection with the second stirring member.

[0009] As a further preferred embodiment of the present invention, the drive structure further includes a dual-rotor motor disposed within the housing; one output shaft of the dual-rotor motor is connected to the driving bevel gear, and the other output shaft is connected to a drive shaft extending outside the housing; a driven wheel is disposed on the rotating shaft, and a driving wheel is disposed on the drive shaft, the driven wheel and the driving wheel being connected by a transmission belt.

[0010] As a further preferred embodiment of this invention, the number of teeth of the driven bevel gear is greater than the number of teeth of the driving bevel gear.

[0011] As a further preferred embodiment of the present invention, a baffle is vertically provided on the inner sidewall of the shell; the lower end of the baffle extends to the second stirring member.

[0012] As a further preferred embodiment of the present invention, the first stirring component includes a first stirring shaft and stirring blades disposed on the first stirring shaft.

[0013] As a further preferred embodiment of the present invention, the second stirring component includes a second stirring shaft and shear blades disposed on the second stirring shaft.

[0014] As a further preferred embodiment of the present invention, the shell includes an upper shell and a lower shell; the upper shell is provided with a feed inlet at its upper end, and the lower shell is provided with a discharge outlet at its lower end; the first stirring member is fixed on the upper shell, and the second stirring member is fixed on the lower shell.

[0015] As a further preferred embodiment of the present invention, it also includes a bracket; the bracket includes a frame, a lower support frame disposed on the frame and used to fix the lower housing, and an upper support frame disposed on the frame and used to fix the upper housing.

[0016] As a further preferred embodiment of the present invention, the bracket further includes a lifting drive component disposed on the lower support frame and having its output end connected to the upper support frame.

[0017] The beneficial effects of this utility model are: This invention, through the arrangement of a first stirring component and a second stirring component, combined with an adjustable speed driving mode, enables the equipment to meet the different mixing requirements at each stage of the self-healing waterproof coating preparation process, significantly improving the uniformity of the coating particle size distribution, while also offering advantages such as high working efficiency and convenient maintenance. Attached Figure Description

[0018] Appendix Figure 1 This is a cross-sectional structural diagram of the present invention from the main viewing angle.

[0019] Appendix Figure 2 This is a schematic diagram of the movement of materials under stirring action according to this utility model. Attached Figure Description

[0021] 1-Shell, 11-Upper shell, 111-Inlet, 12-Lower shell, 121-Outlet; 2-First stirring component, 21-First stirring shaft, 22-Stirring blade; 3-Second stirring component, 31-Second stirring shaft, 32-Shear blade; 4-Drive structure, 41-Box housing, 42-Driven bevel gear, 43-Driven bevel gear, 45-Rotating shaft, 46-Dual rotor motor, 47-Drive shaft, 48-Driven wheel, 49-Driven wheel, 410-Transmission belt; 5-Baffle; 6-Bracket, 61-Frame, 62-Lower support frame, 63-Upper support frame, 64-Lifting drive component. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] As attached Figure 1 Appendix Figure 2 As shown, this embodiment provides a self-healing waterproof coating preparation device, including a housing 1, a first stirring member 2 and a second stirring member 3 disposed inside the housing 1, and a drive structure 4 disposed outside the housing 1.

[0026] The first stirring component 2 is parallel to the inner wall of the shell 1 and is mainly responsible for generating a strong axial flow to achieve macroscopic circulation of materials, scrape the wall surface, and prevent dead corners. The second stirring component 3 is perpendicular to the inner wall of the shell 1 and is located at the lower end of the first stirring component 2. It is mainly responsible for providing radial shear force to break up powder clumps and achieve fine dispersion. The driving structure 4 can drive the first stirring component 2 and the second stirring component 3 to rotate respectively, so that the two stirring systems can work together and can independently adjust the speed and direction according to process requirements.

[0027] As some preferred embodiments, the drive structure 4 includes a housing 41 disposed at the upper end of the housing 1, a driven bevel gear 42 disposed inside the housing 41 and used for connection with the first stirring member 2, a driving bevel gear 43 disposed inside the housing 41 and used for meshing with the driven bevel gear 42, a rotating shaft 45 disposed on the outer side wall of the housing 1 and used for connection with the second stirring member 3, and a dual-rotor motor 46 disposed inside the housing 41; one output shaft of the dual-rotor motor 46 is connected to the driving bevel gear 43, and the other output shaft is connected to the drive shaft 47 extending outside the housing 41; a driven wheel 48 is disposed on the rotating shaft 45, and a driving wheel 49 is disposed on the drive shaft 47, and the driven wheel 48 and the driving wheel 49 are connected by a transmission belt 410.

[0028] The housing 41 serves as the framework for mounting and supporting all transmission components and bearings. It is typically made of cast iron or cast steel and generally comprises an upper housing and a lower housing for ease of assembly and maintenance. Besides the transmission components disclosed above, bearings and bearing housings are also essential components. They primarily support the gear shaft of the bevel gear, bearing the radial and axial forces generated by the transmission, ensuring the bevel gear remains stably in the correct meshing position. The housing 41 should also be equipped with end caps and seals for axial positioning of the bearings and for sealing the housing. Finally, to reduce friction and wear during gear meshing and bearing operation, a lubrication system can be configured. This lubrication system typically includes an oil sump, dipstick, drain plug, and vent plug. These structures are known in the art and will not be described further in this embodiment.

[0029] The driven bevel gear 42 is connected to the rotating shaft of the first stirring component 2 via a common coupling. The driving bevel gear 43 meshes with the driven bevel gear 42 at a 90-degree angle, resulting in a compact structure, stable transmission ratio, and high load-bearing capacity. One rotor of the dual-rotor motor 46 is connected to the driving bevel gear via its output shaft, while the other rotor drives the drive shaft 47 to rotate via its output shaft. The driving wheel 49 and driven wheel 48 mounted on the drive shaft 47 can be calculated based on their specific diameter ratios and synchronously driven by a transmission belt 410 to ensure that the rotating shaft 45 obtains a suitable operating speed.

[0030] The design of the drive structure 4 described above allows for a centralized arrangement of the power source, resulting in a compact structure. Furthermore, a single dual-rotor motor can drive two independent stirring components, further reducing costs and ensuring the synchronization of the power source.

[0031] Furthermore, the driven bevel gear 42 has a greater number of teeth than the driving bevel gear 43. This makes the driven bevel gear 42 and the driving bevel gear 43 the core components of the speed reduction and torque amplification structure, allowing the first stirring component to achieve a lower rotational speed and a higher torque to meet the stirring requirements of high-viscosity materials; while the second stirring component can achieve a higher rotational speed. Through the above-mentioned drive structure, the two stirring systems fully comply with the preparation process of self-healing waterproof coatings. During the preparation of the slurry, the first stirring component completes the material conveying from the inner wall of the shell downwards and from the center upwards, ensuring that all the material in the shell can be circulated to the shearing zone, completely eliminating dead zones; when the powdered raw materials are mixed with the liquid, the blade tips of the second stirring component can generate extremely high local shear force, which is sufficient to break up all powder agglomerates, allowing them to be fully wetted by the liquid, forming a fine, particle-free slurry. In the process of mixing slurry and emulsion, the emulsion is added to the shell, and the overall rotation speed of the drive structure is reduced. At this time, the speed of the first stirring component decreases significantly, which can prevent the emulsion from being damaged. The speed of the second stirring component at the bottom decreases but is still higher than that of the first stirring component. Although its high-speed shearing effect disappears, the stirring intensity is still maintained, ensuring that the slurry that has sunk to the bottom can be broken up and lifted again, which not only avoids the problem of sedimentation but also improves the mixing efficiency.

[0032] In some preferred embodiments, baffles 5 are vertically arranged on the inner wall of the shell 1; the lower end of the baffles 5 extends to the second stirring member 3. The number of baffles 5 is selected from 3 to 6, and the width of each baffle 5 is selected from 1 / 12 to 1 / 10 of the inner diameter of the shell. A gap can be provided between the baffles 5 and the inner wall of the shell to facilitate cleaning and prevent material entrainment; the width of the gap is selected from 1 / 5 to 1 / 4 of the width of the baffle 5. The lower end of the baffle 5 should be as close as possible to the bottom of the shell without interfering with the rotation of the second stirring member 3, thereby ensuring that the baffles 5 can effectively interfere with the eddies generated by the rotation of the second stirring member 3. The purpose of setting the baffles 5 in this embodiment is to break the circumferential flow inside the shell, transforming the tangential flow into intense radial and axial turbulence, greatly enhancing the shearing effect and mixing efficiency, preventing vortex generation, and ensuring that the shearing force of the second stirring member can effectively act on the material inside the shell.

[0033] Specifically, the first stirring component 2 includes a first stirring shaft 21 and stirring blades 22 disposed on the first stirring shaft 21. The stirring blades 22 can be anchor type, frame type, or spiral type, suitable for pushing and scraping high-viscosity materials. Furthermore, the stirring blades 22 are preferably spiral type, which can, driven by the first half-shaft 21, complete the material conveying from the inner wall of the shell downwards and from the center upwards, ensuring that all materials in the entire shell can be circulated to the shearing zone, completely eliminating dead zones.

[0034] Specifically, the second stirring component 3 includes a second stirring shaft 31 and shear blades 32 disposed on the second stirring shaft 31. The shear blades 32 can be of the serrated disc type, turbine type, or centrifugal type, specifically designed to generate high-intensity shear force. Furthermore, the shear blades 32, being either serrated disc or turbine type, can generate extremely high local shear force at the blade tips when mixing powdered raw materials with liquid, sufficient to break up all powder agglomerates, ensuring they are fully wetted by the liquid to form a fine, particle-free slurry; when the slurry is mixed with the emulsion, the generated shear force also ensures that the polymer emulsion droplets and filler particles achieve microscopic uniform mixing and coating, forming a stable and homogeneous system.

[0035] In some preferred embodiments, the housing 1 includes an upper housing 11 and a lower housing 12; the upper housing 11 has a feed inlet 111 at its upper end, and the lower housing 12 has a discharge outlet 121 at its lower end; a first stirring member 2 is fixed to the upper housing 11, and a second stirring member 3 is fixed to the lower housing 12. The upper housing 11 and the lower housing 12 can be sealed together using common structures such as flanges. The split design facilitates cleaning and maintenance of the interior of the housing and makes it easier to inspect and replace the stirring members. In addition, a jacket can be installed on the outside of the lower housing 12, and a water circulation system can be installed inside the jacket. This system, through indirect heat exchange with the interior of the lower housing 12, ensures that the mixing system inside the lower housing 12 remains within a stable temperature range, which helps improve the quality of the coating.

[0036] In some preferred embodiments, a support 6 is also included. The support 6 includes a frame 61, a lower support frame 62 mounted on the frame 61 for fixing the lower housing 12, an upper support frame 63 mounted on the frame 61 for fixing the upper housing 11, and a lifting drive component 64 mounted on the lower support frame 62 with its output end connected to the upper support frame 63. The upper support frame 63 can be directly fixedly connected to the upper housing 11 or fixedly connected to the drive structure 4, thereby lifting the upper housing 11. The lifting drive component 64 can be a hydraulic cylinder or an electric push rod, thereby driving the upper housing 11 and its connected first stirring component 2 to rise and fall as a whole. This allows for rapid separation and closure of the upper housing 11 and lower housing 12 when cleaning or maintenance is required, greatly improving the ease of use and maintainability of the equipment.

[0037] The working principle of this utility model is as follows: Powder dispersion period: Dual stirring components work simultaneously. The first stirring component operates at a lower speed, while the second stirring component performs high-speed shearing at a higher speed. The speed ratio of the first stirring component to the second stirring component can reach 1:20~30. The macroscopic circulation of the first stirring component ensures that all powder can enter the lower shearing zone, while the second stirring component performs microscopic shearing, allowing the powder to be fully dispersed in the liquid, resulting in a slurry with a more uniform particle size distribution. During the emulsion and slurry mixing period: reduce the rotation speed of the dual stirring components, add the emulsion, and the gentle axial flow generated by the first stirring component ensures that the emulsion is evenly dispersed without being damaged. The second stirring component can avoid problems such as sedimentation at the bottom, so that all parts of the slurry can be fully mixed with the emulsion. Discharge and cleaning period: Disconnect the drive wheel and driven wheel, and lift the upper shell together with the first stirring component and drive structure by the operation of the lifting drive component, so that the lower shell that performs the function of the mixing chamber is exposed, which is convenient for cleaning and maintenance.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A self-healing waterproof coating preparation device, characterized in that: The device includes a housing (1), a first stirring member (2) and a second stirring member (3) disposed within the housing (1), and a drive structure (4) disposed outside the housing (1); the first stirring member (2) is parallel to the inner wall of the housing (1), the second stirring member (3) is perpendicular to the inner wall of the housing (1), and the second stirring member (3) is located at the lower end of the first stirring member (2); the drive structure (4) can drive the first stirring member (2) and the second stirring member (3) to rotate respectively.

2. The self-healing waterproof coating preparation device according to claim 1, characterized in that: The drive structure (4) includes a housing (41) disposed at the upper end of the housing (1), a driven bevel gear (42) disposed in the housing (41) and used to connect with the first stirring member (2), a driving bevel gear (43) disposed in the housing (41) and used to mesh with the driven bevel gear (42), and a rotating shaft (45) disposed on the outer side wall of the housing (1) and used to connect with the second stirring member (3).

3. The self-healing waterproof coating preparation device according to claim 2, characterized in that: The drive structure (4) also includes a dual rotor motor (46) disposed in the housing (41); one output shaft of the dual rotor motor (46) is connected to the driving bevel gear (43), and the other output shaft is connected to the drive shaft (47) extending outside the housing (41); a driven wheel (48) is disposed on the rotating shaft (45), and a driving wheel (49) is disposed on the drive shaft (47); the driven wheel (48) and the driving wheel (49) are connected by a transmission belt (410).

4. The self-healing waterproof coating preparation device according to claim 2, characterized in that: The number of teeth of the driven bevel gear (42) is greater than the number of teeth of the driving bevel gear (43).

5. The self-healing waterproof coating preparation device according to claim 1, characterized in that: A baffle (5) is vertically arranged on the inner wall of the shell (1); the lower end of the baffle (5) extends to the second stirring member (3).

6. The self-healing waterproof coating preparation device according to claim 1, characterized in that: The first stirring component (2) includes a first stirring shaft (21) and stirring blades (22) disposed on the first stirring shaft (21).

7. The self-healing waterproof coating preparation device according to claim 1, characterized in that: The second stirring component (3) includes a second stirring shaft (31) and a shear blade (32) disposed on the second stirring shaft (31).

8. The self-healing waterproof coating preparation device according to claim 1, characterized in that: The shell (1) includes an upper shell (11) and a lower shell (12); the upper shell (11) is provided with a feed inlet (111) at its upper end, and the lower shell (12) is provided with a discharge outlet (121) at its lower end; the first stirring member (2) is fixed on the upper shell (11), and the second stirring member (3) is fixed on the lower shell (12).

9. The self-healing waterproof coating preparation device according to claim 8, characterized in that: It also includes a bracket (6); the bracket (6) includes a frame (61), a lower support frame (62) disposed on the frame (61) and used to fix the lower housing (12), and an upper support frame (63) disposed on the frame (61) and used to fix the upper housing (11).

10. The self-healing waterproof coating preparation device according to claim 9, characterized in that: The bracket (6) also includes a lifting drive (64) disposed on the lower support frame (62) and whose output end is connected to the upper support frame (63).

Images