Water-based acrylic emulsion reaction kettle
By using an electrically heated rotating impeller in the reactor, the problem of uneven reaction caused by long heat transfer paths in the prior art is solved, and uniform heating of the water-based acrylic emulsion reaction raw materials in the reactor is achieved and the reaction efficiency is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANXIONG HENGLI CHEM CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-14
AI Technical Summary
The heat transfer path of the aqueous acrylic emulsion reaction raw materials in the existing reactor is long, resulting in uneven reaction rates between the center and the periphery, which affects the reaction efficiency.
An electrically heated rotating impeller is used, which is inserted into the reactor body through the center to heat the water-based acrylic emulsion. The heat is transferred to both the center and the periphery at the same time, shortening the heat transfer path.
This shortens the reaction time difference between different areas in the reactor, improving the reaction uniformity and efficiency of the water-based acrylic emulsion reaction raw materials in the reactor.
Smart Images
Figure CN224486046U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reaction vessels, and in particular to an aqueous acrylic emulsion reaction vessel. Background Technology
[0002] Waterborne acrylic emulsions are emulsions copolymerized from pure acrylate monomers using water as the dispersion medium. The production of waterborne acrylic emulsions requires heating and stirring in a reactor. However, existing reactors have an external heating jacket to heat the waterborne acrylic emulsion reactants in the reactor, and a stirring paddle in the center of the reactor to stir the materials. Heat needs to be transferred from the outer periphery of the reactor to the center, resulting in a long heat transfer path. The waterborne acrylic emulsion reactants in the center of the reactor are heated much slower than those near the outer periphery, leading to a significant difference in the reaction sequence of the waterborne acrylic emulsion reactants in the same reactor. Utility Model Content
[0003] The purpose of this invention is to overcome the above-mentioned problems in the existing technology and provide an aqueous acrylic emulsion reaction vessel.
[0004] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:
[0005] An aqueous acrylic emulsion reactor includes a reactor body for containing aqueous acrylic emulsion reaction raw materials and an annular reactor lid. The reactor lid is installed at the top of the reactor body. A bearing bracket and a motor are mounted on the reactor lid. A rotary support bearing and a slip ring bracket are mounted on the bearing bracket. A rotating cylinder is mounted on the rotary support bearing. An electrically heated rotating impeller is mounted at the bottom of the rotating cylinder. The lower part of the electrically heated rotating impeller passes through a hollow hole in the center of the reactor lid and is inserted into the reactor body. An electric slip ring is mounted on the slip ring bracket. The rotor of the electric slip ring is connected to the electrically heated rotating impeller by an electric wire. A drive gear is mounted on the motor shaft of the motor. The drive gear meshes with the outer gear ring of the rotary support bearing.
[0006] The electrically heated rotating impeller includes a lower annular impeller ring, an upper annular impeller ring, N hollow blades, N electric heating rods, an annular rubber sealing gasket, and a circular mounting plate. The hollow blades are welded between the lower and upper impeller rings. The upper impeller ring has through holes that communicate with the internal cavities of each hollow blade. The hollow blades are filled with heat-conducting oil. The lower part of the electric heating rod is inserted into the hollow blade through the through hole, and the top of the electric heating rod is mounted on the mounting plate. The mounting plate is mounted above the upper impeller ring, and the rubber sealing gasket is sandwiched between the upper impeller ring and the mounting plate.
[0007] The lower impeller ring is coaxial with the upper impeller ring, and N hollow blades are arranged in a circular array with the central axis of the lower impeller ring as the center. The central axis of the hollow blades is parallel to the central axis of the lower impeller ring.
[0008] The hollow blade has an elliptical cross-section.
[0009] The included angle between the hollow blade and the radial direction of the lower impeller ring is 45°.
[0010] The mounting plate has a diameter larger than the outer diameter of the upper impeller ring, and a rubber sealing ring is fitted around the outer periphery of the mounting plate.
[0011] The beneficial effects of this utility model are: the lower part of the electrically heated rotating impeller is inserted into the reactor body to heat the water-based acrylic emulsion reaction raw materials contained in the reactor body. The heat is transferred from the electrically heated rotating impeller to both the center and the outer periphery of the reactor body at the same time, reducing the heat transfer path and narrowing the reaction time difference of the water-based acrylic emulsion reaction raw materials in different areas of the reactor body. Attached Figure Description
[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0013] Figure 1 This is a schematic diagram of the structure of the aqueous acrylic emulsion reactor of this utility model;
[0014] Figure 2 This is a schematic diagram of the structure of the vessel lid installed on the top of the vessel body, viewed from the side and above.
[0015] Figure 3 This is a schematic diagram of the structure of the vessel lid installed on the top of the vessel body, viewed from the lower side.
[0016] Figure 4 This is a schematic diagram of the electric heating rotary impeller, rotary cylinder, and slewing support bearing assembled in this utility model, viewed from the side and above.
[0017] Figure 5 This is a schematic diagram of the electric heating rotary impeller, rotary cylinder, and slewing support bearing assembled in this utility model, viewed from the lower side.
[0018] Figure 6 This is a schematic diagram of the structure of the electric heating rod inserted into the hollow blade in this utility model;
[0019] Figure 7 This is a schematic diagram of the cross-section of the hollow blade and the lower impeller ring after being fixed together in this utility model;
[0020] Figure 8 This is a top view of the upper impeller ring structure of this utility model;
[0021] Figure 9 This is a schematic diagram of the structure of the slip ring bracket mounted on the bearing bracket in this utility model;
[0022] Figure 10 This is a schematic diagram of the rotating cylinder in this utility model;
[0023] Explanation of the numbers in the diagram: 1. Reactor body; 11. Discharge pipe; 12. Support leg.
[0024] 2. Lid of the vessel; 21. Feed pipe; 22. Motor support rod.
[0025] Bearing bracket 3
[0026] Motor 4
[0027] 5. Slewing bearing 5, external gear ring 51
[0028] 6. Slip ring bracket
[0029] Rotating cylinder 7, wire groove 71,
[0030] 8. Electric heating rotary impeller; 81. Lower impeller ring; 82. Upper impeller ring; 821. Through hole; 83. Hollow blade; 84. Electric heating rod; 85. Rubber sealing gasket; 86. Mounting plate; 87. Rubber sealing ring.
[0031] 9. Electric slip rings
[0032] Drive gear 10. Detailed Implementation
[0033] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0034] like Figures 1 to 10 As shown, the aqueous acrylic emulsion reactor includes a reactor body 1 for containing the raw materials for the aqueous acrylic emulsion reaction and an annular reactor cover 2. The reactor body 1 has a circular cross-section, and the reactor cover 2 is installed on the top of the reactor body 1. A vertically downward discharge pipe 11 is provided at the center of the bottom of the reactor body 1. Three support legs 12 arranged in a circular array are welded to the reactor body 1. A vertically upward feed pipe 21 is provided on the reactor cover 2.
[0035] A bearing bracket 3 is installed on the lid 2. A rotary support bearing 5 and a slip ring bracket 6 are installed on the bearing bracket 3. A rotating cylinder 7 is installed on the rotary support bearing 5. A wire groove 71 for the power supply line to pass through is provided at the bottom of the rotating cylinder 7. An electric heating rotating impeller 8 is installed at the bottom of the rotating cylinder 7. The lower part of the electric heating rotating impeller 8 passes through the hollow hole in the center of the lid 2 and is inserted into the lid body 1. An electric slip ring 9 is installed on the slip ring bracket 6. The rotor of the electric slip ring 9 is connected to the electric heating rotating impeller 8 by a wire. The wire connecting the rotor of the electric slip ring 9 and the electric heating rotating impeller 8 passes through the wire groove 71.
[0036] The electrically heated rotating impeller 8 includes a lower impeller ring 81 (circular), an upper impeller ring 82 (circular), 12 hollow blades 83 with elliptical cross-sections, 12 electric heating rods 84, a rubber sealing gasket 85 (circular), and a circular mounting plate 86. The hollow blades 83 are welded between the lower impeller ring 81 and the upper impeller ring 82. The upper impeller ring 82 has through holes 821 that communicate with the internal cavities of each hollow blade 83. The hollow blades 83 are filled with heat-conducting oil. The lower part of the electric heating rods 84 is inserted into the hollow blades 83 through the through holes. The top of the electric heating rods 84 is mounted on the mounting plate 86. The mounting plate 86 is mounted above the upper impeller ring 82. The rubber sealing gasket 85 is sandwiched between the upper impeller ring 82 and the mounting plate 86.
[0037] The lower part of the electrically heated rotating impeller 8 is inserted into the reactor body 1 to heat the water-based acrylic emulsion reaction raw material contained in the reactor body 1. The heat is transferred from the electrically heated rotating impeller 8 to both the center and the outer periphery of the reactor body 1, reducing the heat transfer path and narrowing the reaction time difference of the water-based acrylic emulsion reaction raw material in different areas of the reactor body.
[0038] The lower impeller ring 81 is coaxial with the upper impeller ring 82. Twelve hollow blades 83 are arranged in a circular array with the central axis of the lower impeller ring 81 as the center. The central axis of the hollow blades 83 is parallel to the central axis of the lower impeller ring 81. The radial angle between the hollow blades 83 and the lower impeller ring 81 is 45°.
[0039] The rotating cylinder 7 is coaxial with the mounting plate 86, the upper impeller ring 82, the vessel body 1, and the vessel cover 2. According to the formula for calculating the area of a circle, the amount of water-based acrylic emulsion reaction material required to be heated in the middle of the vessel body is greater than that required to be heated on the outer periphery of the vessel body. The distance between the central axis of the hollow blade 83 and the central axis of the lower impeller ring 81 is 60% of the inner diameter of the vessel body 1. This reduces the reaction time difference of the water-based acrylic emulsion reaction material in different areas of the reactor while ensuring the heat requirements of the water-based acrylic emulsion reaction material in different areas are met.
[0040] The diameter of the mounting plate 86 is larger than the outer diameter of the upper impeller ring 82, and a rubber sealing ring 87 is fitted around the outer periphery of the mounting plate 86.
[0041] The vessel body 1, vessel cover 2, rotating cylinder 7, lower impeller ring 81, upper impeller ring 82, hollow blade 83, and mounting plate 86 are all made of stainless steel.
[0042] A motor 4 is also installed on the lid 2. Specifically, three motor support rods 22 arranged in a circular array are fixed to the top of the lid 2, and the motor 4 is mounted on the motor support rods 22. A drive gear 10 is installed on the motor shaft of the motor 4, and the drive gear 10 meshes with the outer gear ring 51 of the slewing support bearing 5.
[0043] When the motor is powered on, it drives the drive gear 10 to rotate, which in turn causes the outer gear ring 51 of the slewing support bearing 5 to rotate, thereby driving the rotating cylinder 7 and the electrically heated rotating impeller 8 to rotate. The rotating electrically heated rotating impeller 8 stirs the water-based acrylic emulsion reaction raw materials contained in the reactor body 1.
[0044] The stator of the slip ring 9 is connected to a power line that is connected to the factory's internal power grid. A temperature controller that controls the on / off state of the power line is installed on the power line. The temperature sensor of the temperature controller is inserted into the reactor body through an opening in the reactor lid to monitor the temperature of the water-based acrylic emulsion reaction raw materials in the reactor body. The temperature controller controls the on / off state of the power line according to the temperature monitored by the temperature sensor and the required temperature for the water-based acrylic emulsion reaction, so as to control the electric heating rod 84 to turn on for heating or turn off for stopping heating.
[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0046] 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 illustrative of the principles of this 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.
Claims
1. An aqueous acrylic emulsion reaction vessel, characterized in that: The apparatus includes a vessel body for containing raw materials for a water-based acrylic emulsion reaction, and an annular vessel lid. The vessel lid is mounted on the top of the vessel body. A bearing bracket and a motor are mounted on the vessel lid. A rotary support bearing and a slip ring bracket are mounted on the bearing bracket. A rotating cylinder is mounted on the rotary support bearing. An electrically heated rotating impeller is mounted at the bottom of the rotating cylinder. The lower part of the electrically heated rotating impeller passes through a hollow hole in the center of the vessel lid and is inserted into the vessel body. An electric slip ring is mounted on the slip ring bracket. The rotor of the electric slip ring is connected to the electrically heated rotating impeller by an electric wire. A drive gear is mounted on the motor shaft of the motor. The drive gear meshes with the outer gear ring of the rotary support bearing.
2. The aqueous acrylic emulsion reactor according to claim 1, characterized in that: The electrically heated rotating impeller includes a lower impeller ring, an upper impeller ring, N hollow blades, N electric heating rods, a rubber sealing gasket, and a circular mounting plate. The hollow blades are welded between the lower and upper impeller rings. The upper impeller ring has through holes that communicate with the internal cavities of each hollow blade. The hollow blades are filled with heat-conducting oil. The lower part of the electric heating rod is inserted into the hollow blade through the through hole, and the top of the electric heating rod is mounted on the mounting plate. The mounting plate is mounted above the upper impeller ring, and the rubber sealing gasket is sandwiched between the upper impeller ring and the mounting plate.
3. The aqueous acrylic emulsion reactor according to claim 2, characterized in that: The lower impeller ring is coaxial with the upper impeller ring, and N hollow blades are arranged in a circular array with the central axis of the lower impeller ring as the center. The central axis of the hollow blades is parallel to the central axis of the lower impeller ring.
4. The aqueous acrylic emulsion reactor according to claim 2, characterized in that: The hollow blade has an elliptical cross-section.
5. The aqueous acrylic emulsion reactor according to claim 2, characterized in that: The radial angle between the hollow blade and the lower impeller ring is 45°.
6. The aqueous acrylic emulsion reactor according to claim 2, characterized in that: The diameter of the mounting plate is larger than the outer diameter of the upper impeller ring, and a rubber sealing ring is fitted around the outer periphery of the mounting plate.