Raw material mixing device for pure polyester type powder coating production

Abstract

The application relates to a raw material mixing device for producing pure polyester type powder coating, and belongs to the technical field of powder coating processing, which comprises a horizontal stirrer, a top cover is arranged at the top of the horizontal stirrer, a feeding opening is arranged on the top cover, an auxiliary material adding mechanism is arranged in the middle of the top cover, and the auxiliary material adding mechanism comprises a vertical pipe, a mounting bin, an impeller, a motor and a hose. The application is characterized in that the V-shaped stirrer is arranged to preliminarily mix curing agents, pigments, fillers and auxiliary materials such as auxiliary materials, the mixed auxiliary materials are uniformly scattered on the surface of hydroxyl polyester resin raw materials through the auxiliary material adding mechanism, and the auxiliary materials are scattered while being mixed under the agitation of the horizontal stirrer, so that the mixing efficiency is improved, the mixing effect is greatly improved, and the pure polyester type powder coating has good quality.

Description

Technical Field

[0001] This application relates to the technical field of powder coating processing, and in particular to a raw material mixing device for the production of pure polyester powder coatings. Background Technology

[0002] Pure polyester powder coatings are thermosetting powder coatings made with hydroxyl polyester resin as the main film-forming substance, combined with curing agents, pigments, fillers, and additives. These coatings possess excellent weather resistance, decorative properties, and film fullness, and are not prone to yellowing during baking. They are widely used in building materials, home appliances, and general industrial fields. In recent years, their application in door and window profiles, transportation facilities, automotive parts, and outdoor furniture has continued to expand.

[0003] During the production process, the curing agent, pigment, filler and additives need to be poured into the hydroxyl polyester resin raw material and stirred evenly. In the existing technology, a horizontal mixer is generally used for stirring. However, the proportion of curing agent, pigment, filler and additives is relatively small, which means that it takes a long time to stir them evenly with the hydroxyl polyester resin raw material.

[0004] To improve the efficiency of raw material mixing, it is urgent to improve the existing mixing equipment. Utility Model Content

[0005] The purpose of this application is to provide a raw material mixing device for the production of pure polyester powder coatings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides a raw material mixing device for the production of pure polyester powder coatings, employing the following technical solution: A raw material mixing device for producing pure polyester powder coatings includes a horizontal mixer. The top of the horizontal mixer is provided with a top cover, and the top cover is provided with a feeding port. An auxiliary material adding mechanism is provided in the middle of the top cover. The auxiliary material adding mechanism includes a vertical pipe, an installation chamber, an impeller, a motor, and a hose. The vertical pipe is connected to the middle of the top cover and is located near the side of the horizontal mixer. The bottom end of the vertical pipe extends into the bottom of the top cover, and the bottom end of the vertical pipe is a sealed port. An arc-shaped sprinkling port is opened on the side wall of the bottom of the vertical pipe near the sealed port. An installation chamber is provided inside the vertical pipe. The motor is located inside the installation chamber. The impeller is rotated and located at the top of the sealed port. The output shaft of the motor extends out of the installation chamber and is connected to the impeller. The hose is fixed to the top of the vertical pipe. The auxiliary material adding mechanism is equipped with a V-shaped stirrer at the top, and the bottom end of the V-shaped stirrer has a discharge pipe. The top end of the hose is detachably connected to the discharge pipe.

[0007] The V-shaped agitator includes a frame, a drive mechanism, and a V-shaped tank. The horizontal agitator is installed inside the frame, and the V-shaped tank is rotatably connected to the frame. The drive mechanism is fixed inside the frame and is used to drive the V-shaped tank to rotate. Both sides of the top of the V-shaped tank are provided with openable and closable covers, and the bottom of the V-shaped tank is provided with a discharge pipe, and a valve is installed inside the discharge pipe.

[0008] Preferably, in order to reduce the impact of mechanical vibration, the bottom end of the discharge pipe has a flange ring, the top end of the hose is provided with an annular connecting part corresponding to the position of the flange ring, a plurality of male threads are evenly fixed on the annular connecting part, the flange ring is provided with a female thread corresponding to the position of the male threads, and a sealing gasket is provided on the surface of the annular connecting part.

[0009] To facilitate the sliding of premixed auxiliary materials, the top of the installation chamber is sloped.

[0010] The impeller surface is uniformly provided with multiple baffles.

[0011] In summary, this application includes at least one of the following beneficial technical effects: the raw material mixing device for producing pure polyester powder coatings uses a V-type agitator to pre-mix auxiliary raw materials such as curing agents, pigments, fillers, and additives. The mixed auxiliary raw materials are then evenly sprinkled onto the surface of the hydroxyl polyester resin raw material through an auxiliary material adding mechanism. Under the stirring of a horizontal agitator, the auxiliary raw materials are mixed and sprinkled simultaneously, which not only improves the mixing efficiency but also greatly enhances the mixing effect, ensuring that the pure polyester powder coating has good quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0013] Figure 2 yes Figure 1 Enlarged view of section A.

[0014] Figure 3 This is a schematic diagram illustrating the structure of a horizontal mixer in the embodiments of this application.

[0015] Figure 4 This is a schematic diagram illustrating the structure of the auxiliary material addition mechanism in the embodiments of this application.

[0016] Figure 5 This is a top view schematic diagram illustrating the auxiliary material adding mechanism in the embodiments of this application.

[0017] Figure 6 This is a structural schematic diagram from the rear view of the embodiment of the present application, used to illustrate the auxiliary material adding mechanism.

[0018] Explanation of reference numerals in the attached drawings: 1. Horizontal mixer; 11. Feed port; 2. Auxiliary material adding mechanism; 21. Vertical pipe; 211. Arc-shaped sprinkling port; 22. Installation chamber; 23. Impeller; 24. Motor; 25. Hose; 251. Annular connection; 3. V-type agitator; 31. Discharge pipe; 311. Flange ring; 4. Male thread; 5. Female thread. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0020] This application discloses a raw material mixing device for the production of pure polyester powder coatings, referring to... Figure 1-6 The system includes a horizontal mixer 1, a top cover with a feeding port 11, and an auxiliary material adding mechanism 2 in the middle of the top cover. The auxiliary material adding mechanism 2 includes a vertical pipe 21, an installation chamber 22, an impeller 23, a motor 24, and a hose 25. The vertical pipe 21 is connected to the middle of the top cover and is located near the side of the horizontal mixer 1. The bottom end of the vertical pipe 21 extends into the bottom of the top cover, and the bottom end of the vertical pipe 21 is a sealed port. An arc-shaped sprinkling port 211 is opened on the side wall of the bottom of the vertical pipe 21 near the sealed port. The installation chamber 22 is located inside the vertical pipe 21. The motor 24 is located inside the installation chamber 22. The impeller 23 is rotated and located at the top of the sealed port. The output shaft of the motor 24 extends out of the installation chamber 22 and is connected to the impeller 23. The hose 25 is fixed to the top of the vertical pipe 21. Multiple baffles are evenly arranged on the surface of the impeller 23. The auxiliary material adding mechanism 2 is equipped with a V-shaped agitator 3 at the top. The bottom end of the V-shaped agitator 3 has a discharge pipe 31. The top end of the hose 25 is detachably connected to the discharge pipe 31. The V-shaped agitator 3 includes a frame, a drive mechanism, and a V-shaped tank. The horizontal agitator 1 is set inside the frame. The V-shaped tank is rotatably connected to the frame. The drive mechanism is fixed inside the frame and is used to drive the V-shaped tank to rotate. Both sides of the top of the V-shaped tank are equipped with openable and closable covers. The bottom end of the V-shaped tank is equipped with a discharge pipe 31. A valve is installed inside the discharge pipe 31. The V-shaped tank is formed by welding two inclined cylinders into a V shape. The included angle is usually 80°, and the lengths of the two cylinders are not equal.

[0021] Reference Figure 2 The bottom end of the discharge pipe 31 has a flange ring 311, and the top end of the hose 25 is provided with an annular connecting part 251 corresponding to the flange ring 311. Multiple male buckles 4 are evenly fixed on the annular connecting part 251, and female buckles 5 are provided on the flange ring 311 corresponding to the male buckles 4. A sealing gasket is provided on the surface of the annular connecting part 251.

[0022] In use, the annular connecting part 251 at the top of the hose 25 is fixed to the bottom of the discharge pipe 31 by the male buckle 4 and the female buckle 5. At this time, the valve is opened and the pre-mixed auxiliary raw materials can fall into the auxiliary material adding mechanism 2.

[0023] Reference Figure 5 To facilitate the sliding of premixed auxiliary materials, the top of the installation chamber 22 is sloped.

[0024] The implementation principle of a raw material mixing device for producing pure polyester powder coatings according to an embodiment of this application is as follows: In use, the curing agent, pigment, filler, and other auxiliary materials are first added to the V-shaped tank. The drive mechanism drives the V-shaped tank to rotate, and the auxiliary materials repeatedly converge (at the bottom of the V-shape) and diverge (at the top of the V-shape) under the action of gravity. This movement causes the materials to continuously shift, translate, and diffuse, thereby achieving uniform mixing. During this process, the hydroxyl polyester resin raw material is added to the horizontal mixer 1, and the hose 25 is connected to the discharge pipe 31 at the bottom of the V-shaped mixer 3. The valve and motor 24 are opened, and the mixed auxiliary materials fall onto the impeller 23 through the hose 25. The motor 24 drives the impeller 23 to rotate at high speed, and the impeller 23 evenly sprinkles the auxiliary materials into the horizontal mixer 1 from the arc-shaped sprinkling port 211. That is, the auxiliary materials are evenly sprinkled on the hydroxyl polyester resin raw material, which can accelerate the mixing.

[0025] Under the action of the inner and outer spiral ribbons of the mixing shaft of the horizontal mixer 1, the raw materials are turned over within the cylinder. The inner spiral ribbon pushes the material from the middle to both sides, while the outer spiral ribbon pushes the material from both sides to the center. The material mixed back and forth moves and changes radially under the rotation of the spiral ribbons, thus forming a convection circulation, which enables the raw materials to be mixed quickly and evenly.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A raw material mixing device for producing pure polyester powder coatings, comprising a horizontal mixer (1), wherein the top of the horizontal mixer (1) is provided with a top cover, and the top cover is provided with a feeding port (11), characterized in that: The top cover is provided with an auxiliary material adding mechanism (2) in the middle. The auxiliary material adding mechanism (2) includes a vertical pipe (21), an installation chamber (22), an impeller (23), a motor (24), and a hose (25). The vertical pipe (21) is connected to the middle of the top cover and is located near the side of the horizontal mixer (1). The bottom end of the vertical pipe (21) extends into the bottom of the top cover, and the bottom end of the vertical pipe (21) is a sealed opening. An arc-shaped sprinkling port (211) is opened on the side wall of the bottom of the vertical pipe (21) near the sealed opening. The installation chamber (22) is provided inside the vertical pipe (21). The motor (24) is located inside the installation chamber (22). The impeller (23) is rotatably located at the top of the sealed opening. The output shaft of the motor (24) extends out of the installation chamber (22) and is connected to the impeller (23). The hose (25) is fixed at the top of the vertical pipe (21). The auxiliary material adding mechanism (2) is equipped with a V-shaped stirrer (3) at the top, and the bottom end of the V-shaped stirrer (3) has a discharge pipe (31). The top end of the hose (25) is detachably connected to the discharge pipe (31).

2. The raw material mixing device for producing pure polyester powder coatings according to claim 1, characterized in that: The V-shaped agitator (3) includes a frame, a drive mechanism and a V-shaped tank. The horizontal agitator (1) is installed in the frame. The V-shaped tank is rotatably connected to the frame. The drive mechanism is fixed in the frame and is used to drive the V-shaped tank to rotate. Both sides of the top of the V-shaped tank are provided with openable and closable covers. The bottom of the V-shaped tank is provided with a discharge pipe (31) and a valve is installed in the discharge pipe (31).

3. The raw material mixing device for producing pure polyester powder coatings according to claim 2, characterized in that: The discharge pipe (31) has a flange ring (311) at the bottom end, and the top end of the hose (25) is provided with an annular connecting part (251) corresponding to the flange ring (311). Multiple male buckles (4) are evenly fixed on the annular connecting part (251), and female buckles (5) are provided on the flange ring (311) corresponding to the male buckles (4). A sealing gasket is provided on the surface of the annular connecting part (251).

4. The raw material mixing device for producing pure polyester powder coatings according to claim 1, characterized in that: The top of the installation compartment (22) is a slope.

5. The raw material mixing device for producing pure polyester powder coatings according to claim 1, characterized in that: The impeller (23) has multiple baffles evenly distributed on its surface.

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