Reaction kettle for preparing epoxy inorganic hybrid coating

Abstract

The utility model relates to the field of paint production equipment, concretely relates to a reaction kettle for epoxy inorganic hybrid coating preparation, solves the problem that the current production of epoxy inorganic hybrid coating, the traditional reaction kettle is not enough in adaptability, it includes frame, the kettle body can be oscillated and is erected on the frame, installs the kettle cover on the frame above kettle body top, the opening end of kettle body is equipped with the organ soft pipe for sealing soft connection with kettle cover, the bottom of kettle body is equipped with the eccentric component for kettle body swing, the eccentric component includes swing motor, swing speed reducer and eccentric wheel group, installs the stirring system for material stirring on kettle cover, the stirring system includes stirring motor and stirring speed reducer, the stirring shaft that sets up in stirring speed reducer output, stirring shaft installs the disc turbine paddle that is located in the upper layer and the axial flow paddle that is located in the lower layer from top to bottom, the utility model is applied to the production of epoxy inorganic hybrid coating.

Description

Technical Field

[0001] This utility model relates to the field of coating production equipment, specifically to a reaction vessel for preparing epoxy inorganic hybrid coatings. Background Technology

[0002] Epoxy-inorganic hybrid coatings are composed of epoxy resin and silica sol / metal oxide nanoparticles. The production process of these coatings faces three major challenges in the reaction vessel:

[0003] 1. When silica sol is added to epoxy resin, the viscosity of the material will rise sharply to over 8000 mPa·s. The torque of traditional agitators is insufficient, causing the motor to overload and stop.

[0004] 2. Inorganic particles such as zinc oxide settle rapidly due to density differences when there is insufficient axial flow, forming a hard scale layer and reducing the uniformity of product hybridization.

[0005] 3. The exothermic reaction temperature rise rate reaches 5℃ / min, and the lag in heat dissipation of the boundary layer of the reactor wall causes local pre-curing.

[0006] Given the properties of the materials, it is necessary to develop a reactor structure that can overcome the above-mentioned shortcomings. Utility Model Content

[0007] Therefore, this utility model provides a reaction vessel for preparing epoxy inorganic hybrid coatings, which solves the problem that traditional reaction vessels are not adaptable enough for the production of epoxy inorganic hybrid coatings.

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0009] A reaction vessel for preparing epoxy inorganic hybrid coating includes a frame, on which a vessel body is oscillatingly mounted, and a vessel lid is installed on the frame above the vessel body. A bellows hose for sealing and flexible connection with the vessel lid is provided at the open end of the vessel body.

[0010] The bottom of the vessel body is provided with a swing assembly for swinging the vessel body. The swing assembly includes a swing motor, a swing reducer and an eccentric wheel assembly.

[0011] The vessel lid is equipped with a stirring system for stirring materials. The stirring system includes a stirring motor and a stirring reducer, and a stirring shaft located at the output end of the stirring reducer. The stirring shaft is equipped with a disc turbine propeller on the upper layer and an axial flow propeller on the lower layer from top to bottom.

[0012] Preferably, the disc turbine propeller is a six-bladed turbine propeller, and the axial flow propeller is a three-bladed backward-curved propeller.

[0013] Preferably, the distance between the disc turbine propeller and the axial flow propeller is 350-420mm, and the distance between the bottom of the axial flow propeller and the bottom surface of the vessel body is 300-340mm.

[0014] Preferably, the radius of curvature of the blade section of the axial flow propeller increases from the blade tip to the blade root, and the gradient of the radius of curvature is 0.15 to 0.25 / mm.

[0015] Preferably, the eccentric wheel assembly includes a pair of eccentric wheels with a phase difference of 90°, driving the vessel body to swing with an amplitude of ±12° to ±18°.

[0016] Preferably, a viscosity sensor is installed inside the vessel.

[0017] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0018] The structure shown in this technical solution has a dynamic mixing system: the vessel body achieves periodic oscillation through the bottom oscillating component, combined with the double-layer stirring blade design inside the vessel lid, forming a three-dimensional composite flow field, which significantly improves the dispersion and reaction efficiency of high viscosity materials. The coupling design of three-dimensional oscillation and double blade flow field shortens the material micro-mixing time by more than 40%, which is especially suitable for the interface reaction control of epoxy-inorganic system, significantly reduces agglomeration, and improves the density and adhesion of coating.

[0019] The open end of the vessel body is connected to the vessel lid with a flexible sealing connection using a bellows hose. This ensures the reliability of the seal during the swinging process, effectively absorbs mechanical vibration, and avoids the leakage risk caused by traditional rigid connections. The bellows hose sealing structure can withstand temperature changes from -20℃ to 150℃ and pressure fluctuations of 200kPa.

[0020] The eccentricity of the swing mechanism is adjustable to adapt to processes with materials of different viscosities. By adjusting the swing amplitude and stirring parameters, it can be compatible with various inorganic hybrid systems such as epoxy-silicate and epoxy-alumina, meeting the production needs of differentiated products such as high-performance anti-corrosion coatings and fireproof coatings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the reaction vessel according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a schematic diagram of the disc turbine propeller in Embodiment 1 of this utility model;

[0023] Figure 3 This is a schematic diagram of the axial flow propeller of Embodiment 1 of this utility model;

[0024] Figure 4 This is a schematic diagram of the oscillating component in Embodiment 2 of this utility model.

[0025] Reference numerals: 100, frame; 1, vessel body; 11, heating tube; 2, vessel lid; 3, bellows hose; 4, oscillation assembly; 41, oscillation motor; 42, oscillation reducer; 43, eccentric wheel assembly; 44, guide rod assembly; 441, guide groove; 5, stirring system; 51, stirring motor; 52, stirring reducer; 53, stirring shaft; 54, disc turbine propeller; 55, axial flow propeller. Detailed Implementation

[0026] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0027] Example 1

[0028] refer to Figure 1 , Figure 2 and Figure 3 A reaction vessel for preparing epoxy inorganic hybrid coating is a small reaction vessel, which includes a frame 100. The frame 100 is swayably mounted on the vessel body 1. The inner wall of the vessel body 1 is embedded with electric heating tubes 11 and other related heating components. The vessel cover 2 is installed on the frame 100 above the vessel body 1. The open end of the vessel body 1 is provided with a bellows hose 3 for sealing and flexible connection with the vessel cover 2.

[0029] The bottom of the vessel body 1 is provided with a swing assembly 4 for swinging the vessel body 1. The swing assembly 4 includes a swing motor 41, a swing reducer 42 and an eccentric wheel set 43. The eccentric wheel set 43 drives the vessel body 1 to reciprocate and tilt along the frame 100.

[0030] The vessel lid 2 is equipped with a stirring system 5 for stirring materials. The stirring system 5 includes a stirring motor 51 and a stirring reducer 52, and a stirring shaft 53 located at the output end of the stirring reducer 52. The stirring shaft 53 is equipped with a disc turbine propeller 54 on the upper layer and an axial flow propeller 55 on the lower layer from top to bottom.

[0031] The structure shown in this technical solution has a dynamic mixing system: the vessel body 1 achieves periodic oscillation through the bottom oscillating component 4, combined with the double-layer stirring paddle design inside the vessel lid 2, forming a three-dimensional composite flow field, which significantly improves the dispersion and reaction efficiency of high-viscosity materials. The coupling design of three-dimensional oscillation and double-blade flow field shortens the material micro-mixing time by more than 40%, which is especially suitable for the interface reaction control of epoxy-inorganic system, significantly reduces agglomeration, and improves the density and adhesion of the coating.

[0032] The open end of the vessel body 1 is connected to the vessel cover 2 with a flexible sealing connection using a bellows hose 3 to achieve the sealing structure requirements during the swinging process. While ensuring the sealing reliability during the swinging process, it effectively absorbs mechanical vibration and avoids the leakage risk caused by traditional rigid connections. The sealing structure of the bellows hose 3 can withstand temperature changes from -20℃ to 150℃ and pressure fluctuations of 200kPa.

[0033] The eccentricity of the swing mechanism is adjustable to adapt to processes with materials of different viscosities. By adjusting the swing amplitude and stirring parameters, it can be compatible with various inorganic hybrid systems such as epoxy-silicate and epoxy-alumina, meeting the production needs of differentiated products such as high-performance anti-corrosion coatings and fireproof coatings.

[0034] Structurally, the disc turbine propeller 54 is a six-bladed turbine propeller, and the axial flow propeller 55 is a three-bladed backward-curved propeller. The six-bladed turbine propeller provides high shear force to disperse nanoparticle agglomeration, while the three-bladed backward-curved propeller enhances axial flow and suppresses sedimentation, thus synergistically improving the uniformity of the hybrid coating.

[0035] Specifically, the distance between the disc turbine propeller 54 and the axial flow propeller 55 is 350-420 mm, and the distance from the bottom of the axial flow propeller 55 to the inner bottom surface of the vessel body 1 is 300-340 mm. This design optimizes the propeller spacing and bottom distance, avoids flow field interference, enhances the suspension of materials at the bottom, and solves the problem of zinc oxide nanoparticle deposition.

[0036] In this embodiment, the radius of curvature of the blade section of the axial flow propeller 55 increases from the blade tip to the blade root, with a curvature radius variation gradient of 0.15–0.25 mm. Structurally, the biomimetic whale fin curved surface design reduces turbulent energy consumption by more than 15% and reduces energy loss during the mixing of silica sol and epoxy resin.

[0037] In the above structure, a viscosity sensor (not shown in the figure, generally located on the side wall of the reactor body 1 near the bottom) is installed inside the vessel body 1. The viscosity sensor is electrically connected to the control system of the reactor and can detect real-time viscosity data, dynamically respond to viscosity changes during the silica sol addition stage, and reduce the risk of motor overload; specifically, when the viscosity is greater than 5000 mPa·s, the swing motor 41 is controlled to increase the swing amplitude and the speed of the stirring motor 51 is increased.

[0038] Example 2

[0039] refer to Figure 4Compared to Embodiment 1, the eccentric wheel assembly 43 includes a pair of eccentric wheels with a 90° phase difference, driving the vessel body 1 to swing with an amplitude of ±12° to ±18°. Structurally, the two eccentric wheels with a phase difference are connected to a guide rod assembly 44 at their ends to achieve swinging by connecting to the bottom of the vessel body 1. The guide rod assembly 44 has a guide groove 441 in the middle, and the locking block at the lower end of the vessel body 1 slides in the guide groove 441 to achieve double eccentric wheel transmission and ensure smooth transmission. Compared to Embodiment 1, this double eccentric wheel structure has an anti-resonance function. The double eccentric wheel configuration with a 90° phase difference controls the swing inertia imbalance to ΔG≤5%, avoiding structural resonance caused by amplitude superposition.

[0040] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A reaction vessel for preparing epoxy inorganic hybrid coatings, comprising a frame (100), wherein a vessel body (1) is swayably mounted on the frame (100), and a vessel lid (2) is mounted on the frame (100) above the vessel body (1), characterized in that: The open end of the vessel body (1) is provided with a bellows hose (3) for sealing and flexible connection with the vessel lid (2); The bottom of the vessel body (1) is provided with a swing assembly (4) for swinging the vessel body (1). The swing assembly (4) includes a swing motor (41), a swing reducer (42), and an eccentric wheel assembly (43). The vessel lid (2) is equipped with a stirring system (5) for stirring materials. The stirring system (5) includes a stirring motor (51) and a stirring reducer (52), and a stirring shaft (53) located at the output end of the stirring reducer (52). The stirring shaft (53) is equipped with a disc turbine propeller (54) on the upper layer and an axial flow propeller (55) on the lower layer from top to bottom.

2. The reaction vessel for preparing epoxy inorganic hybrid coatings according to claim 1, characterized in that: The disc turbine propeller (54) is a six-bladed turbine propeller, and the axial flow propeller (55) is a three-bladed backward-curved propeller.

3. The reaction vessel for preparing epoxy inorganic hybrid coatings according to claim 2, characterized in that: The distance between the disc turbine propeller (54) and the axial flow propeller (55) is 350-420mm, and the distance between the bottom of the axial flow propeller (55) and the inner bottom surface of the vessel body (1) is 300-340mm.

4. A reaction vessel for preparing epoxy inorganic hybrid coatings according to claim 2 or 3, characterized in that: The radius of curvature of the blade section of the axial flow propeller (55) increases from the blade tip to the blade root, and the gradient of the radius of curvature is 0.15 to 0.25 mm.

5. The reaction vessel for preparing epoxy inorganic hybrid coatings according to claim 1, characterized in that: The eccentric wheel assembly (43) includes a pair of eccentric wheels with a phase difference of 90°, which drive the vessel body (1) to swing with an amplitude of ±12° to ±18°.

6. A reaction vessel for preparing epoxy inorganic hybrid coatings according to any one of claims 1-5, characterized in that: A viscosity sensor is installed inside the vessel body (1).

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