Heating reaction kettle for producing waterborne polyurethane coating
The heating reaction kettle addresses low thermal efficiency and uneven temperature issues in waterborne polyurethane coating production by using a spiral stirring blade and layered heating pipes to achieve uniform mixing and heating, improving production efficiency and product consistency.
Patent Information
- Application Number
- CN202420842570.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-23
AI Technical Summary
Traditional heating methods in waterborne polyurethane coating production suffer from low thermal efficiency and uneven temperature distribution, leading to prolonged heating times and inconsistent product quality.
A heating reaction kettle with a spiral stirring blade, vertical rods, guide plates, and layered heating pipes that ensure uniform mixing and heating by guiding materials from top to bottom or bottom to top, combined with a bracket system for stable heating tube positioning.
Enhances mixing uniformity and heating efficiency, reducing heating time and ensuring consistent product quality by evenly distributing heat and materials.
Smart Images
Figure CN222152045U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coating production, in particular to a heating reaction kettle for producing waterborne polyurethane coating. Background Art
[0002] In modern industrial production, waterborne polyurethane coatings are widely used as surface covering materials. The reactor in its production process is the key equipment to achieve raw material mixing, reaction and dispersion. The performance of the heating reactor used in coating production directly affects the product quality, production efficiency and energy consumption.
[0003] Traditional coating production reactors usually use jackets or inner coils to heat materials. These methods have the following problems:
[0004] 1. Low thermal efficiency: The traditional jacketed or inner coil heating method has a limited heat transfer area, resulting in low heat transfer efficiency, which prolongs the heating time and affects production efficiency;
[0005] 2. Uneven temperature control: Due to the flow characteristics of the material in the reactor and the limitations of the heating method, local overheating or uneven temperature distribution often occurs, which will affect the uniformity and stability of the coating product. Utility Model Content
[0006] The utility model is based on the above technical problems and proposes a heating reaction kettle for producing waterborne polyurethane coatings.
[0007] A heating reaction kettle for producing waterborne polyurethane coatings comprises: a kettle body and a kettle cover, wherein the kettle cover is movably mounted on the kettle body, the kettle cover is provided with a motor, the motor drives a stirring shaft to rotate, the stirring shaft is located in the kettle body, a spiral stirring blade is provided at the lower part of the stirring shaft, a horizontal axis is provided at the lower end of the stirring shaft, a plurality of axially symmetrical vertical rods are provided on the horizontal axis, and guide plates with the same spacing are provided on the vertical rods; a bracket is also provided on the stirring shaft, the bracket is rotatably mounted on the stirring shaft, a plurality of heating pipes are provided on the lower side of the bracket, the heating pipes are layered between the stirring shaft and the vertical rods and between the vertical rods, a sliding rod and a lifting rod are provided on the bracket, the bracket can slide up and down along the sliding rod, the lower end of the lifting rod is fixed on the bracket, the upper end of the sliding rod is fixed on the kettle cover, and the lifting rod passes through the kettle cover.
[0008] Preferably, a plurality of balancing frames evenly distributed in a circumference are provided on the upper side of the bracket, and the outer ends of the balancing frames are located in the slide grooves on the inner wall of the kettle body and can slide up and down along the slide grooves.
[0009] Preferably, the heating tube is an electric heating tube.
[0010] Beneficial effects: A vertical rod is provided in the reactor as a stirring blade, and a guide plate is provided on the vertical rod. As the vertical rod rotates, the guide plate will guide the raw materials to move from bottom to top or from top to bottom, so that the mixing is more uniform during the stirring process. A heating tube is provided between the vertical rods. As the raw materials are stirred, the raw materials are heated more evenly and the overall heating is faster. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 The structure diagram of the utility model is shown;
[0012] Figure 2 The internal structure diagram of the utility model is shown. DETAILED DESCRIPTION
[0013] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0014] Embodiment 1
[0015] like Figure 1~Figure 2 The heating reactor for producing waterborne polyurethane coatings shown in the figure has a reactor body 1 supported by legs 3, a reactor cover 2 movably mounted on the reactor body 1, a feeding port 5 is arranged on the upper part of the reactor body 1, a discharge port 6 is arranged on the bottom thereof, a motor 4 is arranged on the reactor cover 2, the motor 4 drives a stirring shaft 7 to rotate, the stirring shaft 7 is located in the reactor body 1, a spiral stirring blade 8 is arranged at the lower part of the stirring shaft 7, the spiral stirring blade 8 can drive the raw materials at the lower part to be lifted upward, thereby improving the mixing efficiency; a horizontal axis 9 is arranged at the lower end of the stirring shaft 7, and four axially symmetrical vertical rods 10 are arranged on the horizontal axis 9, and the four vertical rods 10 are arranged on the horizontal axis 9. The vertical rods 10 are divided into two groups and are located on both sides of the stirring shaft 7. The vertical rods 10 are provided with guide vanes 11 with the same spacing. The horizontal axis 9, the vertical rods 10 and the guide vanes 11 on the vertical rods 10 constitute a stirring blade structure. The guide vanes 11 can be tilted backward and upward along the rotation direction of the stirring shaft 7, so that the guide vanes 11 can guide the raw materials to move upward, or can be tilted backward and downward along the rotation direction of the stirring shaft 7, so that the guide vanes 11 can guide the raw materials to move downward. The guide vanes 11 cooperate with the spiral stirring blades 8 to fully stir the raw materials and make the mixing more uniform.
[0016] A bracket 12 is also provided on the stirring shaft 7. The bracket 12 is rotatably installed on the stirring shaft 7. Two layers of heating tubes are provided on the lower side of the bracket 12. The heating tubes can be electric heating tubes. The heating tubes are divided into an inner heating tube 13 and an outer heating tube 14. The inner heating tube 13 is arranged between the stirring shaft 7 and the vertical rod 10, and the outer heating tube 14 is located between the vertical rods 10 and the vertical rods 10 of the same group. In this way, the heating tubes fully heat the raw materials as the raw materials are stirred, so that the heating is more uniform.
[0017] In order to ensure the stability of the bracket 12, a sliding rod 16 and a lifting rod 15 are provided on the bracket 12. The bracket 12 can slide up and down along the sliding rod 16. The lower end of the lifting rod 15 is fixed on the bracket 12, and the upper end of the sliding rod 16 is fixed on the kettle cover 2. The lifting rod 15 can control the up and down movement of the bracket 12. The sliding rods 16 are axially symmetrically arranged so that the bracket 12 is in a horizontal state during the movement to avoid the heating tube from contacting the spiral stirring blades 8 or the guide vanes 11.
[0018] In addition, a plurality of balancing frames 17 evenly distributed in a circumference may be provided on the upper side of the bracket 12 , and the outer ends of the balancing frames 17 are located in the slide grooves 18 on the inner wall of the kettle body 1 and can slide up and down along the slide grooves 18 .
[0019] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A heating reactor for the production of waterborne polyurethane coatings, It is characterized in that include: A kettle body and a kettle cover, wherein the kettle cover is movably mounted on the kettle body, the kettle cover is provided with a motor, the motor drives the stirring shaft to rotate, the stirring shaft is located in the kettle body, a spiral stirring blade is provided at the lower part of the stirring shaft, a horizontal axis is provided at the lower end of the stirring shaft, a plurality of axially symmetrical vertical rods are provided on the horizontal axis, and guide plates with the same spacing are provided on the vertical rods; a bracket is also provided on the stirring shaft, the bracket is rotatably mounted on the stirring shaft, a plurality of heating tubes are provided on the lower side of the bracket, the heating tubes are layered between the stirring shaft and the vertical rods and between the vertical rods, a sliding rod and a lifting rod are provided on the bracket, the bracket can slide up and down along the sliding rod, the lower end of the lifting rod is fixed on the bracket, the upper end of the sliding rod is fixed on the kettle cover, and the lifting rod passes through the kettle cover.
2. The heating reactor for producing waterborne polyurethane coating according to claim 1, It is characterized in that A plurality of balancing frames evenly distributed in a circumference are arranged on the upper side of the bracket, and the outer ends of the balancing frames are located in the slide grooves on the inner wall of the kettle body and can slide up and down along the slide grooves.
3. The heating reactor for producing waterborne polyurethane coating according to claim 1, It is characterized in that The heating tube is an electric heating tube.