An apparatus for producing a polyester resin for powder coating

Abstract

The utility model relates to a polyester resin production equipment for powder coating. The structure comprises a reaction kettle shell, a stirring rod and a scraper mechanism. The reaction kettle shell is a cylinder structure with support rods fixedly connected to the surface in a symmetrical manner. The stirring rod is rotatably connected to the inner wall of the reaction kettle shell. The scraper mechanism for processing raw materials with different viscosities is installed inside the reaction kettle shell. By installing the scraper mechanism, the polyester resin raw materials enter the inside through the feeding port of the reaction kettle shell. For low-viscosity raw materials, the adjusting rod rotates inside the adjusting plate, driving the stirring rod to rotate inside the reaction kettle shell, mixing the raw materials. At the same time, the scraper assembly rotates in the same direction as the stirring rod inside the reaction kettle shell, preventing the raw materials from adhering to the inner wall. For high-viscosity raw materials, the stirring rod and the scraper assembly rotate in opposite directions, enhancing the shearing effect and shortening the reaction time.

Description

Technical Field

[0001] This utility model relates to the field of powder coating technology, and in particular to a production equipment for polyester resin used in powder coating. Background Technology

[0002] Powder coating is a 100% solid powdered synthetic resin coating composed of solid resin, pigments, fillers, and additives. It uses air as the dispersion medium, resulting in no solvent pollution and high environmental friendliness. Its core advantages include: utilization rate exceeding 95% (oversprayed powder can be recycled), thick film formed in one pass (50-150μm), strong durability (wear-resistant and corrosion-resistant), and diverse colors (any color can be mixed). Application is mainly electrostatic spraying, and it is suitable for home appliances, automobiles, building materials, and other fields. According to function, it can be divided into decorative, anti-corrosion, and insulating types. Thermosetting powder coatings have become the mainstream choice for automotive coatings due to their high temperature resistance and strong adhesion.

[0003] When processing powder coatings, a reaction vessel is required to produce polyester resin: raw materials such as polyols and polyacids are put into the reaction vessel and thoroughly mixed by a stirrer. At the same time, the temperature is precisely controlled by heating equipment (usually 180-240℃) to promote the esterification and polycondensation reaction. Since there are many types of powder coatings and the viscosity of raw materials varies greatly, stirring alone can easily lead to uneven mixing. In addition, high-viscosity materials are prone to sticking to the vessel wall, forming a scale layer, which affects heat transfer efficiency and product quality.

[0004] Therefore, in response to the above problems, a new production equipment for polyester resin in powder coatings is proposed. Utility Model Content

[0005] To overcome the problems existing in related technologies, this utility model provides a production equipment for polyester resin for powder coatings. It can install a scraper frame on the inner wall of the reactor to prevent sticky raw materials from adhering to the inner wall. At the same time, when facing low viscosity raw materials, the stirring rod and the scraper frame rotate in the same direction, and when facing high viscosity raw materials, the stirring rod and the scraper frame rotate in opposite directions.

[0006] To achieve the above objectives, the first aspect of this utility model provides a production equipment for polyester resin used in powder coatings, comprising:

[0007] Reactor shell, stirring rod and scraper mechanism;

[0008] The reactor shell is a cylindrical structure with support rods fixedly connected to its surface symmetrically. A stirring rod is rotatably connected to the inner wall of the reactor shell. A scraper mechanism for processing raw materials of different viscosities is installed inside the reactor shell.

[0009] The scraper mechanism includes an adjusting rod, an adjusting plate, and a scraper assembly;

[0010] An adjusting rod is installed at the top of the stirring rod and passes through the upper surface of the reactor shell. An adjusting plate is provided above the reactor shell and is rotatably connected to the adjusting rod. A scraper assembly is fitted on the adjusting rod and rotatably installed on the reactor shell. A first bevel gear is fixedly connected to the surface of the adjusting rod, and a second bevel gear is fixedly installed on the scraper assembly.

[0011] Furthermore, the first bevel gear is located above the second bevel gear, and the first bevel gear rotates in the opposite direction to the second bevel gear.

[0012] Furthermore, a synchronization groove is provided inside the adjusting rod, and a connecting rod that passes through the synchronization groove is fixedly connected to the top of the stirring rod. A regular hexagonal block that slides through the synchronization groove is fixedly connected to the top of the connecting rod.

[0013] Furthermore, positioning seats are symmetrically installed on the scraper assembly, and lifting seats are symmetrically fixedly connected to the surface of the adjusting rod. A positioning rod that passes through the positioning seat is fixedly connected to the upper surface of the lifting seat.

[0014] Furthermore, a protective shell is fixedly connected to the upper surface of the reactor shell, and a drive motor is installed inside the protective shell. A third bevel gear is fixedly connected to the output shaft of the drive motor. The third bevel gear meshes with the first bevel gear and with the second bevel gear.

[0015] Furthermore, an assembly base located below the adjustment plate is symmetrically fixedly connected to the upper surface of the reactor shell. An electric push rod is installed inside the assembly base, and the moving end of the electric push rod is fixedly connected to the lower surface of the adjustment plate.

[0016] Furthermore, the scraper assembly includes a ring rod and a scraper body;

[0017] A circular rod is fitted onto the adjusting rod and is rotatably connected to the reactor shell. A scraper body located inside the reactor shell is symmetrically fixed to the surface of the circular rod.

[0018] The technical solution provided by this utility model can include the following beneficial effects:

[0019] In this example, by installing a scraper mechanism, the polyester resin raw material enters the reactor shell through the feed port. When dealing with low-viscosity raw materials, the adjusting rod rotates inside the adjusting plate, driving the stirring rod to rotate inside the reactor shell to mix the raw materials. At the same time, the scraper assembly rotates inside the reactor shell in the same direction as the stirring rod to prevent the raw materials from sticking to the inner wall. When dealing with high-viscosity raw materials, the stirring rod and scraper assembly rotate in opposite directions to enhance the shearing effect and shorten the reaction time.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0021] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0022] Figure 1 This is a schematic diagram of the overall structure shown in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the reactor shell shown in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the stirring rod structure shown in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the adjusting rod shown in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the upper surface structure of the reactor shell shown in an embodiment of the present invention.

[0027] The correspondence between the labels and component names in the attached figures is as follows:

[0028] 1. Reactor shell; 2. Stirring rod; 3. Adjusting rod; 4. Adjusting plate; 5. Scraper assembly;

[0029] 6. Synchronization groove; 7. Connecting rod; 8. Regular hexagonal block;

[0030] 9. Positioning seat; 10. Lifting seat; 11. Positioning rod;

[0031] 12. Protective shell; 13. Drive motor; 14. Mounting base; 15. Electric push rod. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0033] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0034] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] Designing production equipment for polyester resins used in powder coatings that can process raw materials of different viscosities is currently the primary technical problem that technicians need to solve.

[0036] To address the aforementioned problems, this utility model provides a production equipment for polyester resin used in powder coatings. This structure allows for the installation of a scraper frame on the inner wall of the reactor to prevent viscous materials from adhering to the inner wall. Simultaneously, when facing low-viscosity materials, the stirring rod and scraper frame rotate in the same direction, while when facing high-viscosity materials, the stirring rod and scraper frame rotate in opposite directions.

[0037] The technical solution of the present invention (Embodiment 1) is described in detail below with reference to the accompanying drawings.

[0038] Figure 1 This is a schematic diagram of the overall structure shown in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the reactor shell shown in an embodiment of the present invention; Figure 3 This is a schematic diagram of the stirring rod structure shown in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the adjusting rod shown in an embodiment of the present invention; Figure 5 This is a schematic diagram of the upper surface structure of the reactor shell shown in an embodiment of the present invention.

[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The equipment for producing polyester resin for powder coatings specifically includes:

[0040] Reactor shell 1, stirring rod 2, and scraper mechanism;

[0041] The reactor shell 1 is a cylindrical structure with support rods fixedly connected to its surface symmetrically. A stirring rod 2 is rotatably connected to the inner wall of the reactor shell 1. A scraper mechanism for processing raw materials of different viscosities is installed inside the reactor shell 1.

[0042] The scraper mechanism includes an adjusting rod 3, an adjusting plate 4, and a scraper assembly 5;

[0043] The top of the stirring rod 2 is equipped with an adjusting rod 3 that passes through the upper surface of the reactor shell 1. An adjusting plate 4 that is rotatably connected to the adjusting rod 3 is provided above the reactor shell 1. A scraper assembly 5 that is rotatably installed on the adjusting rod 3 and is fitted onto the adjusting rod 3. A first bevel gear is fixedly connected to the surface of the adjusting rod 3, and a second bevel gear is fixedly installed on the scraper assembly 5.

[0044] Specifically, the first bevel gear is located above the second bevel gear, and the first bevel gear rotates in the opposite direction to the second bevel gear.

[0045] Specifically, the adjusting rod 3 has a synchronization groove 6 inside, the top of the stirring rod 2 is fixedly connected to a connecting rod 7 that passes through the synchronization groove 6, and the top of the connecting rod 7 is fixedly connected to a regular hexagonal block 8 that is slidably connected to the synchronization groove 6.

[0046] Specifically, positioning seats 9 are symmetrically installed on the scraper assembly 5, and lifting seats 10 are symmetrically fixedly connected to the surface of the adjusting rod 3. A positioning rod 11 that passes through the positioning seat 9 is fixedly connected to the upper surface of the lifting seat 10.

[0047] Specifically, a protective shell 12 is fixedly connected to the upper surface of the reactor shell 1, a drive motor 13 is installed inside the protective shell 12, and a third bevel gear is fixedly connected to the output shaft of the drive motor 13. The third bevel gear meshes with the first bevel gear and with the second bevel gear.

[0048] Specifically, an assembly base 14 located below the adjustment plate 4 is symmetrically fixedly connected to the upper surface of the reactor shell 1. An electric push rod 15 is installed inside the assembly base 14, and the moving end of the electric push rod 15 is fixedly connected to the lower surface of the adjustment plate 4.

[0049] Specifically, the scraper assembly 5 includes a ring rod and a scraper body;

[0050] The adjusting rod 3 is fitted with a circular rod that is rotatably connected to the reactor shell 1, and a scraper body located inside the reactor shell 1 is symmetrically fixedly connected to the surface of the circular rod.

[0051] In this embodiment, how to process polyester resin raw materials with different viscosities, combined with Figures 1 to 3 The specific implementation method is as follows: the polyester resin raw material enters the interior through the feed port of the reactor shell 1. When facing low viscosity raw material, the adjusting rod 3 rotates inside the adjusting plate 4, which drives the stirring rod 2 to rotate inside the reactor shell 1 to mix the raw material. At the same time, the scraper assembly 5 rotates inside the reactor shell 1 in the same direction as the stirring rod 2 to prevent the raw material from sticking to the inner wall. When facing high viscosity raw material, the stirring rod 2 and the scraper assembly 5 rotate in opposite directions to enhance the shearing effect and shorten the reaction time.

[0052] In this embodiment, how to control the stirring rod 2 and the scraper assembly 5 to rotate in the same direction, combined with Figures 3 to 5 The specific implementation method is as follows: the electric push rod 15 inside the assembly base 14 is activated, the moving end of the electric push rod 15 extends, driving the adjusting plate 4 to move upward, the adjusting rod 3 moves upward accordingly, the regular hexagonal block 8 slides along the inside of the synchronous groove 6, the adjusting rod 3 drives the lifting seat 10 to approach the positioning seat 9, the positioning rod 11 enters the inside of the positioning seat 9, the output shaft of the drive motor 13 drives the third bevel gear to rotate, the third bevel gear drives the second bevel gear to rotate, the scraper assembly 5 drives the adjusting rod 3 to rotate in the same direction, and the stirring rod 2 rotates in the same direction accordingly.

[0053] In this embodiment, how to control the stirring rod 2 and the scraper assembly 5 to rotate in opposite directions, combined with Figures 3 to 5 The specific implementation method is as follows: start the drive motor 13 inside the protective shell 12, the output shaft of the drive motor 13 drives the third bevel gear to rotate, the third bevel gear contacts the first bevel gear and the second bevel gear, driving the adjusting rod 3 and the scraper assembly 5 to rotate in the opposite direction, driving the stirring rod 2 and the scraper assembly 5 to rotate in the opposite direction.

[0054] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0055] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A production equipment for polyester resin in powder coatings, characterized in that, include: The reactor shell (1), stirring rod (2), and scraper mechanism; The reactor shell (1) is a cylindrical structure with support rods fixedly connected to its surface symmetrically. A stirring rod (2) is rotatably connected to the inner wall of the reactor shell (1). A scraper mechanism for processing raw materials of different viscosities is installed inside the reactor shell (1). The scraper mechanism includes an adjusting rod (3), an adjusting plate (4), and a scraper assembly (5); The stirring rod (2) is equipped with an adjusting rod (3) that passes through the upper surface of the reactor shell (1). An adjusting plate (4) that is rotatably connected to the adjusting rod (3) is provided above the reactor shell (1). A scraper assembly (5) that is rotatably installed on the adjusting rod (3) is sleeved on the adjusting rod (3). A first bevel gear is fixedly connected to the surface of the adjusting rod (3), and a second bevel gear is fixedly installed on the scraper assembly (5).

2. The polyester resin production equipment for powder coatings according to claim 1, characterized in that: The first bevel gear is located above the second bevel gear, and the first bevel gear rotates in the opposite direction to the second bevel gear.

3. The polyester resin production equipment for powder coatings according to claim 1, characterized in that: The adjusting rod (3) has a synchronization groove (6) inside. The top of the stirring rod (2) is fixedly connected to a connecting rod (7) that passes through the synchronization groove (6). The top of the connecting rod (7) is fixedly connected to a regular hexagonal block (8) that slides through the synchronization groove (6).

4. The polyester resin production equipment for powder coatings according to claim 1, characterized in that: The scraper assembly (5) is symmetrically equipped with positioning seats (9), and the surface of the adjusting rod (3) is symmetrically fixedly connected with lifting seats (10). The upper surface of the lifting seat (10) is fixedly connected with a positioning rod (11) that passes through the positioning seat (9).

5. The polyester resin production equipment for powder coatings according to claim 1, characterized in that: A protective shell (12) is fixedly connected to the upper surface of the reactor shell (1). A drive motor (13) is installed inside the protective shell (12). A third bevel gear is fixedly connected to the output shaft of the drive motor (13). The third bevel gear meshes with the first bevel gear and the third bevel gear meshes with the second bevel gear.

6. The polyester resin production equipment for powder coatings according to claim 1, characterized in that: The upper surface of the reactor shell (1) is symmetrically and fixedly connected to an assembly base (14) located below the adjustment plate (4). An electric push rod (15) is installed inside the assembly base (14), and the moving end of the electric push rod (15) is fixedly connected to the lower surface of the adjustment plate (4).

7. The polyester resin production equipment for powder coatings according to claim 1, characterized in that: The scraper assembly (5) includes a ring rod and a scraper body; The adjusting rod (3) is fitted with a circular rod that is rotatably connected to the reactor shell (1), and a scraper body located inside the reactor shell (1) is symmetrically fixedly connected to the surface of the circular rod.

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