A thermosetting plastic powder coating curing mixing device

Abstract

The utility model relates to powder mixing equipment technical field discloses a thermosetting plastic powder paint solidification mixing arrangement, including mixing jar, the top fixed intercommunication of mixing has the feed pipe of setting up obliquely upwards. This kind of thermosetting plastic powder paint solidification mixing arrangement, through the feed pipe of setting up obliquely upwards and the inside setting up's intercepting net cylinder, smash axle and smash leaf structure, has realized the purpose of breaking up in the feeding process to the particle or agglomerate in powder, keeps into the uniform fine of mixing jar powder, effectively avoided the problem of uneven mixing due to agglomeration, thereby guaranteed the forming quality of subsequent thermosetting plastic powder paint, improved the performance stability of product, through the structural combination of stirring shaft, self -moving cover, stirring vane, connecting rod, resist ball, annular wave track and compression spring, has realized the purpose that stirring vane reciprocates up and down while rotating, greatly increased the contact area and stirring range of stirring vane and powder material.

Description

Technical Field

[0001] This utility model relates to the field of powder mixing equipment technology, specifically a thermosetting plastic powder coating curing and mixing device. Background Technology

[0002] In the production process of thermosetting plastic powder coatings, the powder mixing stage is crucial, as it directly affects the molding quality and performance of the final product. Thermosetting plastic powder coatings typically require the precise mixing of various powder raw materials with different properties to meet specific curing requirements and application scenarios.

[0003] An existing patent (publication number: CN214925989U) discloses an energy-saving mixing device for mixing plastic powders, including a mixing tank. Fixed blocks are fixedly installed on both sides of the mixing tank, and a central shaft is fixedly installed between the two fixed blocks. A rotating block is rotatably installed on the central shaft, and a stirring block is fixedly installed at the bottom of the rotating block. In this invention, multiple plastic powders are poured into the mixing tank. The drive motor is started to rotate forward, driving the screw to rotate forward. According to the screw drive principle, the moving block moves to one side, and the rotating block rotates to one side via a connecting rod. The drive motor is then started to rotate in reverse, driving the screw to rotate in reverse, and the moving block moves to the other side, and the rotating block rotates to the other side via a connecting rod. This causes the rotating block to oscillate cyclically. The stirring block mixes the multiple plastic powders within the mixing tank. The operation is simple, eliminates the need for manual mixing, and improves production efficiency.

[0004] However, during the storage and transportation of powder raw materials, due to environmental factors (such as humidity and temperature changes) and the physicochemical properties of the raw materials themselves, powder raw materials are prone to agglomeration. When agglomerated powder enters the above-mentioned mixing device, it is difficult to mix it thoroughly and evenly with other powder raw materials. The above-mentioned equipment mainly uses a stirring block to circulate and oscillate in the mixing tank to stir and mix various plastic powders. However, this stirring method has limited capacity to handle powder raw materials with agglomeration. Agglomerated powder is difficult to be effectively dispersed during the stirring process, resulting in uneven local composition in the mixed powder. Secondly, since thermosetting plastic powders need to be mixed with multiple powders and curing agents before curing, traditional additives are usually added to the surface of the top material. During the mixing process of the above-mentioned mixing device, the bottom material is not easy to be stirred to the top, which greatly prolongs the mixing time of additives and powder materials and reduces production efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a thermosetting plastic powder coating curing and mixing device, which has advantages such as uniform mixing and solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a thermosetting plastic powder coating curing and mixing device, comprising a mixing tank, wherein the top of the mixing tank is fixedly connected to an inclined upward feeding pipe, an intercepting mesh cylinder is fixedly connected inside the feeding tank, the intercepting mesh cylinder and the feeding pipe are on the same axis, a gap is provided between the intercepting mesh cylinder and the feeding pipe, a crushing shaft is rotatably connected to the inner bottom wall of the intercepting mesh cylinder, and a set of crushing blades is fixedly connected to the outer surface of the crushing shaft;

[0007] The mixing tank is rotatably connected to the top of a stirring shaft. A self-moving sleeve is slidably connected to the outer surface of the stirring shaft. A set of stirring blades is fixedly connected to the outer surface of the self-moving sleeve. A set of Y-shaped connecting rods is provided at the top of the self-moving sleeve. A contact ball is fixedly connected to the top of each of the two connecting rods. An annular wave rail is fixedly connected to the inner top wall of the mixing tank. Both contact balls abut against the annular wave rail. A compression spring is provided between the self-moving sleeve and the bottom of the stirring shaft.

[0008] Furthermore, a support frame is provided at the bottom of the mixing tank.

[0009] The above solution uses a support frame to stably support the mixing tank, ensuring that the mixing tank remains stable during operation and preventing shaking or tilting from affecting the mixing effect and equipment safety.

[0010] Furthermore, a drive shaft is provided at the bottom end of the feed pipe, and bevel gears are fixedly connected to the top end of the drive shaft and the bottom end of the crushing shaft, with the two bevel gears meshing with each other.

[0011] The above scheme drives one of the bevel gears to rotate via the drive shaft, which in turn drives the other bevel gear and the crushing shaft to rotate, thereby realizing the crushing function of the crushing shaft on the particles or clumps in the powder entering the feed pipe. Moreover, this transmission method has a simple structure and reliable transmission.

[0012] Furthermore, a discharge pipe is provided at the bottom of the mixing tank, an electric valve is provided at the bottom of the discharge tank, and an auger conveyor is provided below the mixing tank, with the inlet end of the auger conveyor connected to the discharge pipe.

[0013] The above scheme enables the auger conveyor to transport mixed materials to external curing equipment. The auger conveyor uses its internal spiral blades to continuously and evenly transport materials from the discharge pipe to the external curing equipment, improving the efficiency and automation of material conveying and reducing manual operation.

[0014] Furthermore, an addition pipe is fixedly connected to the top of the mixing tank.

[0015] The above solution connects the addition pipe to an external additive delivery device, allowing additives from the external device to be accurately added to the mixing tank and mixed with the powder material to meet the additive addition requirements during the curing process of thermosetting plastic powder coatings.

[0016] Furthermore, the bottom end of one set of the stirring blades is L-shaped, and the inner bottom wall of the set of stirring blades is arched.

[0017] The above scheme increases the contact area between the mixing blade and the material by making the bottom of the mixing blade L-shaped, thus enhancing the mixing effect; the arched bottom wall of the mixing blade makes the material easier to move and turn during the mixing process, further promoting the uniform mixing of the material and the additives.

[0018] Furthermore, the top end of the stirring shaft is fixedly connected to the external motor output end via a coupling.

[0019] The above scheme transmits the power of an external motor to the stirring shaft through a coupling, enabling the stirring shaft to rotate stably and reliably, thereby driving components such as the self-moving sleeve and stirring blades to perform stirring operations.

[0020] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0021] This thermosetting plastic powder coating curing and mixing device, through an upwardly inclined feed pipe and an internal intercepting mesh cylinder, crushing shaft, and crushing blade structure, achieves the purpose of crushing particles or lumps in the powder during the feeding process, ensuring that the powder entering the mixing tank is uniform and fine, effectively avoiding the problem of uneven mixing caused by lumps, thereby ensuring the molding quality of the subsequent thermosetting plastic powder coating and improving the performance stability of the product. Through the structural combination of stirring shaft, self-moving sleeve, stirring blade, connecting rod, contact ball, annular wave rail, and compression spring, the stirring blade achieves the purpose of reciprocating up and down motion while rotating. Since the bottom end of the stirring blade has an L-shaped arch structure, it can carry the bottom material to the top layer while stirring the material in different areas, so that the bottom and top materials alternate with each other, ensuring uniform contact with the continuously added additives above, reducing problems such as curing defects caused by uneven mixing of powder and additives. Attached Figure Description

[0022] Figure 1 This is a sectional view of the overall structure of this application from the front.

[0023] Figure 2 This is a three-dimensional schematic diagram of the overall structure of this application;

[0024] Figure 3 This is a front view of the overall structure of this application;

[0025] Figure 4This is a structural diagram of the stirring shaft in this application;

[0026] Figure 5 This is a structural diagram of the intercepting mesh tube in this application.

[0027] In the picture:

[0028] 1. Mixing tank; 2. Feed pipe; 3. Interception net cylinder; 4. Crushing shaft; 5. Crushing blade; 6. Stirring shaft; 7. Self-moving sleeve; 8. Stirring blade; 9. Connecting rod; 10. Contact ball; 11. Annular wave rail; 12. Compression spring; 13. Support frame; 14. Drive shaft; 15. Bevel gear; 16. Discharge pipe; 17. Electric valve; 18. Screw conveyor; 19. Addition pipe. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Please see Figure 1 , Figure 3 and Figure 5 This embodiment of a thermosetting plastic powder coating curing and mixing device includes a mixing tank 1. A support frame 13 is provided at the bottom of the mixing tank 1 to stably support the mixing tank 1, ensuring that the mixing tank 1 remains stable during operation and preventing shaking or tilting from affecting the mixing effect and equipment safety. The top of the mixing tank is fixedly connected to an upwardly inclined feed pipe 2. An intercepting mesh cylinder 3 is fixedly connected inside the feed tank. The intercepting mesh cylinder 3 and the feed pipe 2 are on the same axis, and a gap is provided between the intercepting mesh cylinder 3 and the feed pipe 2. A crushing shaft 4 is rotatably connected to the inner bottom wall of the intercepting mesh cylinder 3. A set of crushing blades 5 is fixedly connected to the outer surface of the crushing shaft 4. Through the above configuration, the particles or lumps in the powder can be crushed during the feeding process to ensure the subsequent molding quality.

[0031] Please see Figure 1 , Figure 2 and Figure 5A drive shaft 14 is installed at the bottom of the feed pipe 2. A bevel gear 15 is fixedly connected to both the top of the drive shaft 14 and the bottom of the crushing shaft 4. The two bevel gears 15 mesh with each other. The drive shaft 14 drives one bevel gear 15 to rotate, which in turn drives the other meshing bevel gear 15 and the crushing shaft 4 to rotate. This achieves the crushing function of the crushing shaft 4 on the particles or lumps in the powder entering the feed pipe 2. This transmission method has a simple structure and reliable transmission. A discharge pipe 16 is installed at the bottom of the mixing tank 1, and an electric valve 17 is installed at the bottom of the discharge tank. An auger conveyor 18 is installed below the mixing tank 1. The auger conveyor 18... The material end is connected to the discharge pipe 16. The auger conveyor 18 can transport the mixed material to the external curing equipment. The auger conveyor 18 uses its internal spiral blades to continuously and evenly transport the material from the discharge pipe 16 to the external curing equipment, which improves the efficiency and automation of material transportation and reduces manual operation. The top of the mixing tank 1 is fixedly connected to the addition pipe 19, which is connected to the external additive conveying equipment. The additives in the external additive conveying equipment can be accurately added to the mixing tank 1 through the addition pipe 19 to mix with the powder material to meet the additive addition requirements in the curing process of thermosetting plastic powder coating.

[0032] Please see Figure 1 , Figure 2 and Figure 4 A stirring shaft 6 is rotatably connected to the top of the mixing tank 1. A self-moving sleeve 7 is slidably connected to the outer surface of the stirring shaft 6. A set of stirring blades 8 is fixedly connected to the outer surface of the self-moving sleeve 7. A set of Y-shaped connecting rods 9 is provided at the top of the self-moving sleeve 7. A contact ball 10 is fixedly connected to the top of each of the two connecting rods 9. An annular wave rail 11 is fixedly connected to the inner top wall of the mixing tank 1. Both contact balls 10 abut against the annular wave rail 11. A compression spring 12 is provided between the bottom end of the self-moving sleeve 7 and the stirring shaft 6. When the stirring shaft 6 rotates, it can drive the self-moving sleeve 7 to rotate synchronously, and at the same time drive the connecting rods 9 and the contact balls 10 to rotate. Figure 4 As can be seen, the self-moving sleeve 7 can slide up and down the stirring shaft 6. Since the outer surface of the stirring shaft 6 is beveled, it is irregularly shaped. During the rotation of the stirring shaft 6, the self-moving sleeve 7 can also be driven to rotate. During the rotation of the self-moving sleeve 7, the contact ball 10 at the top of the connecting rod 9 abuts against the annular wave rail 11, which can be intermittently pressed and drive the self-moving sleeve 7 to move up and down on the surface of the stirring shaft 6.

[0033] Please see Figure 1 , Figure 2 and Figure 4One set of stirring blades 8 has an L-shaped bottom end and an arched inner bottom wall. The L-shaped bottom end of the stirring blades 8 increases the contact area between the stirring blades 8 and the material, enhancing the stirring effect. The arched inner bottom wall of the stirring blades 8 makes it easier for the material to be moved and turned during the stirring process, further promoting the uniform mixing of the material and the additives. The top of the stirring shaft 6 is fixedly connected to the output end of the external motor through a coupling. The power of the external motor is transmitted to the stirring shaft 6 through the coupling, enabling the stirring shaft 6 to rotate stably and reliably, thereby driving the self-moving sleeve 7, stirring blades 8 and other components to perform stirring operations.

[0034] It should be noted that when adding additives through the addition tube 19, the amount of additives added should be accurately controlled according to the formula requirements. Precise metering equipment, such as flow meters, can be used to ensure that the amount of additives added meets the production standards. During the addition process, the additives should be added to the mixing tank 1 slowly and evenly to avoid adding too much at once, which would lead to excessively high local concentrations and affect the mixing effect.

[0035] The working principle of the above embodiment is as follows: The thermosetting plastic powder raw material to be mixed is fed into the mixing tank 1 through the upwardly inclined feed pipe 2. After entering the feed pipe 2, the material passes through the gap between the intercepting net cylinder 3 and the feed pipe 2 and falls into the intercepting net cylinder 3. The drive shaft 14 starts to rotate under the drive of an external power source (such as a motor), which drives the bevel gear 15 fixedly connected to its top to rotate synchronously. Since the bevel gear 15 meshes with the bevel gear 15 at the bottom of the crushing shaft 4, according to the gear transmission principle, the crushing shaft 4 starts to rotate accordingly. During the rotation of the crushing shaft 4, a set of crushing blades 5 fixedly connected to its outer surface rotates at high speed, which powerfully crushes any particles or lumps that may exist in the raw material falling into the intercepting net cylinder 3. The size of the crushed raw material particles meets the requirements and can pass smoothly through the mesh of the intercepting net cylinder 3 and enter the interior of the mixing tank 1, effectively avoiding the problem of uneven mixing caused by lumps, thereby ensuring the molding quality of the subsequent thermosetting plastic powder coating and improving the performance stability of the product. The stirring shaft 6 The top of the mixing tank 1 is fixedly connected to the external motor output via a coupling. When the motor starts, the power is stably and reliably transmitted to the stirring shaft 6 through the coupling, causing the stirring shaft 6 to start rotating. During the rotation of the stirring shaft 6, the self-moving sleeve 7, which is slidably connected to its outer surface, rotates synchronously. A set of stirring blades 8, which are fixedly connected to the outer surface of the self-moving sleeve 7, rotates accordingly, starting to stir the raw materials entering the mixing tank 1. At the same time, a set of Y-shaped connecting rods 9 set at the top of the self-moving sleeve 7 and the contact balls 10 fixedly connected to the top of the connecting rods 9 also rotate with the self-moving sleeve 7. Since the inner top wall of the mixing tank 1 is fixedly connected to the annular wave rail 11, and both contact balls 10 are in contact with the annular wave rail 11, when the contact balls 10 rotate along the surface of the annular wave rail 11, they will be affected by the wavy undulations of the surface of the annular wave rail 11. Under the elastic action of the compression spring 12, the self-moving sleeve 7 will rotate with the contact balls 10. The stirring blades 8 move up and down passively due to the motion of the material, which in turn drives the stirring blades 8 to move up and down simultaneously. This unique motion greatly increases the contact area and mixing range between the stirring blades 8 and the powder, allowing the stirring blades 8 to fully mix the powder from different angles and positions, resulting in more uniform mixing. During the mixing process, additives from external additive delivery equipment are accurately added to the mixing tank 1 through the addition pipe 19 fixedly connected to the top of the mixing tank 1. As the stirring blades 8 rotate and move up and down, they thoroughly and evenly mix the additives with the powder, ensuring sufficient contact and reaction between the powder and the additives. This meets the additive addition requirements during the curing process of thermosetting plastic powder coatings, effectively improving mixing efficiency and quality, and reducing curing defects caused by uneven mixing.After the powder and additives are thoroughly mixed, the electric valve 17 at the bottom of the discharge pipe 16 of the mixing tank 1 is opened. The mixed material flows out of the discharge pipe 16 under gravity. The inlet of the auger conveyor 18 located below the mixing tank 1 is connected to the discharge pipe 16. After flowing out of the discharge pipe 16, the material directly enters the auger conveyor 18. The auger conveyor 18, through its internal spiral blades, continuously and evenly transports the material from the discharge pipe 16 to the external curing equipment. This improves the efficiency and automation of material conveying, reduces manual operation, and ensures that the material can enter the subsequent curing stage in a timely and accurate manner, guaranteeing the smooth operation of the entire production process.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermosetting plastic powder coating curing and mixing device, comprising a mixing tank (1), characterized in that: The top of the mixing tank is fixedly connected to an inclined upward feed pipe (2), and an intercepting net cylinder (3) is fixedly connected inside the feed tank. The intercepting net cylinder (3) and the feed pipe (2) are on the same axis. A gap is provided between the intercepting net cylinder (3) and the feed pipe (2). A crushing shaft (4) is rotatably connected to the inner bottom wall of the intercepting net cylinder (3), and a set of crushing blades (5) is fixedly connected to the outer surface of the crushing shaft (4). The mixing tank (1) is rotatably connected to a stirring shaft (6). A self-moving sleeve (7) is slidably connected to the outer surface of the stirring shaft (6). A set of stirring blades (8) is fixedly connected to the outer surface of the self-moving sleeve (7). A set of Y-shaped connecting rods (9) is provided at the top of the self-moving sleeve (7). A contact ball (10) is fixedly connected to the top of each of the two connecting rods (9). An annular wave rail (11) is fixedly connected to the inner top wall of the mixing tank (1). Both contact balls (10) abut against the annular wave rail (11). A compression spring (12) is provided between the self-moving sleeve (7) and the bottom of the stirring shaft (6).

2. The thermosetting plastic powder coating curing and mixing device according to claim 1, characterized in that: The bottom of the mixing tank (1) is provided with a support frame (13).

3. The thermosetting plastic powder coating curing and mixing device according to claim 1, characterized in that: The bottom end of the feed pipe (2) is provided with a drive shaft (14), and the top end of the drive shaft (14) and the bottom end of the crushing shaft (4) are both fixedly connected with bevel gears (15), and the two bevel gears (15) are meshed together.

4. The thermosetting plastic powder coating curing and mixing device according to claim 1, characterized in that: The mixing tank (1) is provided with a discharge pipe (16) at the bottom end, and an electric valve (17) is provided at the bottom end of the discharge tank. An auger conveyor (18) is provided below the mixing tank (1), and the feed end of the auger conveyor (18) is connected to the discharge pipe (16).

5. The thermosetting plastic powder coating curing and mixing device according to claim 1, characterized in that: The top of the mixing tank (1) is fixedly connected to an addition pipe (19).

6. The thermosetting plastic powder coating curing and mixing device according to claim 1, characterized in that: The bottom end of one set of stirring blades (8) is L-shaped, and the inner bottom wall of one set of stirring blades (8) is arched.

7. The thermosetting plastic powder coating curing and mixing device according to claim 1, characterized in that: The top end of the stirring shaft (6) is fixedly connected to the external motor output end via a coupling.

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