Centrifugal device for water-stable waterborne epoxy emulsion

Abstract

The centrifugal device comprises a first centrifugal tank, a second centrifugal tank, a rotating column and stirring blades, a feeding opening is formed in the top of the second centrifugal tank, the first centrifugal tank is provided with an open centrifugal cavity and a centrifugal assembly rotationally arranged at the bottom of the centrifugal cavity, and the bottom of the centrifugal cavity communicates with a sending-out end; the sending-out end is movably inserted and communicated with the feeding opening; supports are installed on the two sides of the outer wall of the second centrifugal tank, a controller is arranged outside the supports, fixing columns are arranged on the inner sides of the supports and connected with rolling rings, and the outer wall of the second centrifugal tank is installed on the inner sides of the rolling rings in a sleeving and rolling mode. A second driving motor is arranged at the bottom of the second centrifugal tank, the output end of the second driving motor is in transition with the inner wall of the second centrifugal tank through a bearing and then connected with a rotating column, and stirring blades are installed on the rotating column. According to the invention, rapid centrifugal separation of the epoxy emulsion is realized, so that the speed of mixing preparation of the waterborne epoxy emulsion is increased.

Description

Technical Field

[0001] The invention relates to the technical field of chemical coating production, in particular to a centrifugal device for water-stabilized aqueous epoxy emulsion. Background Art

[0002] The waterborne epoxy system should include a waterborne epoxy resin and a waterborne epoxy curing agent. Similarly, they can form three water-dispersible forms through different water-based pathways. During the processing of waterborne epoxy emulsions, a mixer is often used to process them so that the different forms of the agents are fully mixed. Prior art authorization announcement number CN218688897U discloses a centrifugal device for water-stable waterborne epoxy emulsions. The device drives the movement of the left support seat and the clamping slider through an electric telescopic rod, thereby driving the rotation of the diamond-shaped transmission plate through the transmission connecting rod on the left. The movement of the transmission connecting rod on the right side can then pull the movement of the support seat and the clamping slider on the right side, so that the mounting plate can drive the centrifugal reactor to shake rapidly left and right. The reaction vessel used in the preparation of the waterborne epoxy emulsion is used to achieve centrifugal mixing of the materials. The structure is simple and efficient. The waterborne epoxy emulsion inside the reaction vessel repeatedly impacts the impact rod during the rotation and centrifugation process, thereby improving the speed of the mixing preparation of the waterborne epoxy emulsion. However, due to the slow molecular diffusion rate between epoxy resin and waterborne epoxy curing agent, the mixing efficiency is low, which slows down the preparation speed of waterborne epoxy emulsion. The centrifugal mixer commonly used for mixing waterborne solvents is not suitable for mixing waterborne epoxy emulsion. Therefore, we propose a centrifugal device for water-stabilized waterborne epoxy emulsion. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a centrifugal device for water-stabilized aqueous epoxy emulsion.

[0004] To achieve the above objectives, the present invention provides the following technical solutions: A centrifugal device for water-stabilized waterborne epoxy emulsion comprises a first centrifugal tank, a second centrifugal tank, a rotating column and a stirring blade, wherein the top of the second centrifugal tank is provided with a feeding port, the first centrifugal tank comprises an open centrifugal chamber and a centrifugal assembly rotatably arranged at the bottom of the centrifugal chamber, the bottom of the centrifugal chamber is connected to a delivery end; the delivery end is movably plugged and connected to the feeding port; brackets are installed on both sides of the outer wall of the second centrifugal tank, a controller is provided on the outside of the bracket, a fixed column is provided on the inside of the bracket, the fixed column is connected to a rolling ring, and the outer wall of the second centrifugal tank is sleeved with a rolling ring installed on the inside of the rolling ring; a second drive motor is provided at the bottom of the second centrifugal tank, the output end of the second drive motor is connected to the rotating column after transitioning to the inner wall of the second centrifugal tank through a bearing, and the stirring blade is installed on the rotating column.

[0005] Furthermore, the centrifugal chamber is formed in the first centrifugal tank, a liquid outlet is provided at the bottom of the first centrifugal tank, the centrifugal assembly includes a centrifugal disk and centrifugal blades located on the centrifugal disk, a gap is reserved between the edge of the centrifugal disk and the side wall of the first centrifugal tank, and the liquid outlet is located in the gap.

[0006] Furthermore, the bottom of the centrifugal disk is connected to a rotating shaft, and the rotating shaft is located outside the first centrifugal tank and is connected to the output end of the driving motor 1.

[0007] Furthermore, the rotating column is composed of a fixed end at the lower end and a rotating end at the upper end. A water outlet is provided on the surface of the rotating column and a water flow channel is provided inside the rotating column. The rotating end can rotate around the axis of the rotating column; the fixed end is connected to the output end of the second driving motor; the water outlet is provided on the rotating end surface of the rotating column, and a water inlet is provided on the fixed end of the rotating column. The water inlet is connected to the water flow channel of the rotating column, and the outside of the water inlet is connected to a water supply device.

[0008] Furthermore, a fixed sleeve is provided on the rotating end, and a plurality of evenly distributed extension rods are provided on the fixed sleeve, and the extension rods are perpendicular to the rotating column; and stirring blades are provided on the upper sleeve of the extension rods.

[0009] Furthermore, the delivery end includes a telescopic hose and a rigid funnel mouth; one end of the telescopic hose is connected to the centrifugal chamber, and the other end is connected to the rigid funnel mouth, and the rigid funnel mouth is movably plugged into and connected to the feeding port.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The centrifugal device for water-stabilized waterborne epoxy emulsions achieves efficient, integrated separation and mixing through a dual-tank collaborative design and modular structure. Specifically, graded processing optimizes efficiency. The first centrifugal tank, through the coordination of high-speed centrifugal discs and centrifugal blades, rapidly separates large impurities from the emulsion into the marginal gaps, where they are discharged through the liquid outlet, achieving primary purification. The direct connection between the centrifugal chamber and the delivery end reduces material transfer losses. The second centrifugal tank, through its rotatable stirring blades and water outlet design on the rotating column, allows for the injection of regulators or cleaning water during stirring, enhancing the emulsion stability control function.

[0011] 2. Dynamic sealing and flexible transmission: the delivery end adopts a combination of telescopic hose and rigid funnel mouth, which can adapt to the displacement deviation between the two tanks and ensure the closed transportation of materials to avoid external contamination; the plug-in design of the rigid funnel mouth facilitates quick docking / separation.

[0012] 3. Low-resistance mixing structure: The second centrifugal tank uses the rolling ring and the bracket to roll together, reducing the friction resistance during tank rotation. The second drive motor drives the stirring blade to form a vortex, improving dispersion uniformity. The radial layout of the extension rod further increases the stirring coverage area.

[0013] 4. Modular intelligent control: The integrated controller in the bracket coordinates the start and stop parameters of drive motor 1 (centrifugal), drive motor 2 (agitation), and the water delivery device, enabling precise control of process variables such as speed and water addition to meet the production needs of different formulations. Cleaning and maintenance are convenient: the rotating column's built-in water flow channel and surface water outlets form a self-cleaning system that can reverse-flushed residual emulsions. The centrifugal assembly and agitator are both removable for easy in-depth maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the specific structure of the rotating column of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the rotating column of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the installation of the rolling ring and the second centrifugal tank of the present invention; Figure 5 This is a schematic diagram of the top cross-sectional structure of the first centrifuge tank of the present invention.

[0016] In the figure: 1-first centrifugal tank; 2-second centrifugal tank; 3-rotating column; 4-stirring blade; 11-centrifugal disk; 12-centrifugal blade; 13-liquid outlet; 14-telescopic hose; 15-rigid funnel mouth; 16-driving motor 1; 17-rotating shaft; 21-controller; 22-fixed column; 23-rolling ring; 24-feeding port; 25-driving motor 2; 30-water inlet; 31-bearing; 32-fixed end; 33-rotating end; 34-water outlet; 35-water flow channel; 36-fixed sleeve; 37-extension rod. DETAILED DESCRIPTION

[0017] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1 like Figure 1-5 This embodiment provides a centrifugal device for water-stabilized waterborne epoxy emulsion, comprising a first centrifugal tank 1, a second centrifugal tank 2, a rotating column 3 and a stirring blade 4, wherein a feeding port 24 is provided at the top of the second centrifugal tank 2.

[0019] The first centrifugal tank 1 comprises an open centrifugal chamber and a centrifugal assembly rotatably mounted at the bottom of the chamber, the bottom of the chamber being connected to a delivery port; the delivery port is removably connected to a feed port 24; brackets are mounted on both sides of the outer wall of the second centrifugal tank 2, and a controller 21 is externally mounted on the brackets. The controller 21 coordinates the start and stop parameters of the drive motor and water delivery device within the device, achieving precise control of process variables such as rotation speed and water addition to meet the production requirements of different formulations; a fixed column 22 is mounted on the inner side of the brackets, connected to a rolling ring 23, and the outer wall of the second centrifugal tank 2 is mounted on the inner side of the rolling ring 23; a second drive motor 25 is mounted at the bottom of the second centrifugal tank 2, the output end of the second drive motor 25 being connected to a rotating column 3 after transitioning to the inner wall of the second centrifugal tank 2 via a bearing 31, and a stirring blade 4 is mounted on the rotating column 3. The second centrifugal tank 2, through the rolling ring 23, rolls with the brackets to reduce frictional resistance during tank rotation. The stirring blades are driven by the second drive motor 25 to form a vortex, thereby improving dispersion uniformity.

[0020] The centrifugal chamber is formed in the first centrifugal tank 1. A liquid outlet 13 is provided at the bottom of the first centrifugal tank 1. The centrifugal assembly includes a centrifugal disk 11 and centrifugal blades 12 located on the centrifugal disk 11. A gap is reserved between the edge of the centrifugal disk 11 and the side wall of the first centrifugal tank 1. The liquid outlet 13 is located in the gap.

[0021] The bottom of the centrifugal disc 11 is connected to a rotating shaft 17 , and the rotating shaft 17 is located outside the first centrifugal tank 1 and is connected to the output end of the driving motor 16 .

[0022] During the specific working centrifugation, the water-based epoxy emulsion is added to the first centrifuge tank 1, and the driving motor 16 is started to drive the rotating shaft 17 to rotate. The rotating shaft 17 is connected to the centrifugal disk 11, and the centrifugal blades 12 are quickly stirred to complete the centrifugation. After the centrifugation is completed, the liquid is precipitated for a period of time and transported to the delivery end through the liquid outlet 13. The centrifuge liquid at the delivery end is further transported to the second centrifuge tank 2; the second centrifuge tank 2 drives the rotating column 3 to rotate through the driving motor 2 25. The stirring blades 4 on the rotating column 3 cooperate with the water outlet design of the rotating column. During stirring, a regulator or cleaning water can be injected, thereby enhancing the emulsion stability control function.

[0023] The centrifugal device for water-stabilized waterborne epoxy emulsions utilizes a dual-tank collaborative design and modular structure, achieving efficient, integrated separation and mixing. Specifically, graded processing optimizes efficiency. The first centrifugal tank utilizes a high-speed centrifugal disc and impellers to rapidly separate large impurities from the emulsion into the margins, where they are discharged through the outlet, achieving primary purification. The direct connection between the centrifugal chamber and the discharge port reduces material transfer losses. The second centrifugal tank, with its rotatable impellers and rotating column outlet, allows for the simultaneous injection of regulators or cleaning water during stirring, enhancing the emulsion's stability control capabilities.

[0024] Example 2 This embodiment provides a centrifugal device for water-stabilized waterborne epoxy emulsions. Its structure is substantially the same as that of Example 1, except that, based on Example 1, this embodiment further discloses that the rotating column 3 is composed of a fixed end 32 at the lower end and a rotating end 33 at the upper end. The rotating column 3 is provided with a water outlet 34 on its surface and a water flow channel 35 inside. The rotating end 33 can rotate about the axis of the rotating column. The fixed end 32 is connected to the output end of the second drive motor 25. The water outlet 34 is provided on the rotating end surface of the rotating column. The fixed end 32 of the rotating column 3 has a water inlet 30, which is connected to the water flow channel 35 of the rotating column 3. The water inlet 30 is externally connected to a water delivery device. The water outlet design allows for the injection of a regulator or cleaning water during stirring, enhancing the emulsion stability control function.

[0025] Example 3 This embodiment provides a centrifugal device for water-stabilized waterborne epoxy emulsions. Its structure is essentially the same as that of Example 1, except that, based on Example 1, a fixed sleeve 36 is further provided on the rotating end. The fixed sleeve 36 is provided with a plurality of evenly distributed extension rods 37 perpendicular to the rotating column 3. The extension rods 37 are provided with stirring blades 4 on their upper sleeves. The radial arrangement of the extension rods further increases the stirring coverage area.

[0026] Example 4 This embodiment provides a centrifugal device for water-stabilized waterborne epoxy emulsions. Its structure is essentially the same as that of Example 1, differing in that, based on Example 1, the delivery end further comprises a telescopic hose 14 and a rigid funnel 15. One end of the telescopic hose 14 connects to the centrifugal chamber, and the other end connects to the rigid funnel 15. The rigid funnel 15 is removably plugged into the feed port 24. This achieves dynamic sealing and flexible transmission. The telescopic hose and rigid funnel combination at the delivery end accommodates displacement deviations between the two tanks while ensuring sealed material delivery and preventing external contamination. The plug-in design of the rigid funnel facilitates quick docking and detachment.

[0027] It should be noted that the above description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other. In addition, the above are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A centrifugal device for water-stabilized waterborne epoxy emulsion, comprising a first centrifugal tank (1), a second centrifugal tank (2), a rotating column (3) and a stirring blade (4), wherein a feeding port (24) is provided at the top of the second centrifugal tank (2), characterized in that: The first centrifugal tank (1) has an open centrifugal chamber and a centrifugal assembly rotatably arranged at the bottom of the centrifugal chamber, the bottom of the centrifugal chamber is connected to the delivery end; the delivery end is movably plugged and connected to the feeding port (24); brackets are installed on both sides of the outer wall of the second centrifugal tank (2), a controller (21) is provided on the outside of the bracket, a fixed column (22) is provided on the inner side of the bracket, the fixed column (22) is connected to the rolling ring (23), and the outer wall of the second centrifugal tank (2) is sleeved with a rolling ring installed on the inner side of the rolling ring (23); a second drive motor (25) is provided at the bottom of the second centrifugal tank (2), the output end of the second drive motor (25) is connected to the rotating column (3) after transitioning through a bearing (31) and the inner wall of the second centrifugal tank (2), and a stirring blade (4) is installed on the rotating column (3).

2. A centrifugal device for water-stable aqueous epoxy emulsion according to claim 1, characterized in that: A centrifugal chamber is formed in the first centrifugal tank (1), a liquid outlet (13) is provided at the bottom of the first centrifugal tank (1), the centrifugal assembly comprises a centrifugal disc (11) and centrifugal blades (12) located on the centrifugal disc (11), a gap is reserved between the edge of the centrifugal disc (11) and the side wall of the first centrifugal tank (1), and the liquid outlet (13) is located in the gap.

3. A centrifugal device for water-stable aqueous epoxy emulsion according to claim 2, characterized in that: The bottom of the centrifugal disc (11) is connected to a rotating shaft (17), and the rotating shaft (17) is located outside the first centrifugal tank (1) and is connected to the output end of the first drive motor (16).

4. A centrifugal device for water-stable aqueous epoxy emulsion according to claim 1, characterized in that: The rotating column (3) is composed of a fixed end (32) at the lower end and a rotating end (33) at the upper end. A water outlet hole (34) is provided on the surface of the rotating column (3) and a water flow channel (35) is provided inside the rotating column. The rotating end (33) can rotate around the axis of the rotating column. The fixed end (32) is connected to the output end of the second driving motor (25). The water outlet hole (34) is provided on the surface of the rotating end of the rotating column. A water inlet hole (30) is provided on the fixed end (32) of the rotating column (3). The water inlet hole (30) is connected to the water flow channel (35) of the rotating column (3). The water inlet hole (30) is externally connected to a water delivery device.

5. A centrifugal device for water-stable aqueous epoxy emulsion according to claim 4, characterized in that: A fixed sleeve (36) is sleeved on the rotating end, and a plurality of evenly distributed extension rods (37) are provided on the fixed sleeve (36), and the extension rods (37) are perpendicular to the rotating column (3); and a stirring blade (4) is sleeved on the extension rods (37).

6. A centrifugal device for water-stable aqueous epoxy emulsion according to claim 1, characterized in that: The delivery end comprises a telescopic hose (14) and a rigid funnel mouth (15); one end of the telescopic hose (14) is connected to the centrifugal chamber, and the other end is connected to the rigid funnel mouth (15); the rigid funnel mouth (15) is movably plugged and connected to the feeding port (24).

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