Powder coating drying device for paint production

Abstract

The utility model discloses a powder coating drying device for paint production, and particularly relates to powder coating drying technical field, including base, the top of base is connected with a plurality of connecting tubes, the top of top connecting tube is connected with the top cover, the bottom fixed connection of connecting tube's inner chamber has the bottom plate, and the surface of one side of bottom plate is equipped with filter hole, and the bottom fixed connection of bottom plate's bottom median position has the stabilizing ring, and the inner chamber of connecting tube is provided with electric heating tube and heat conduction plate. The utility model first passes through starting motor control pivot and drives helical vane and second scraper rotation, can carry out stirring to the drying powder coating of connecting tube middle part, realizes dynamic drying, and avoids the powder coating adhesion on the wall body, and the convenient scraping of second scraper is carried out, improves stirring quality, thereby improves drying quality, and can carry out the roll -in crushing of massive powder coating through the pivot and drives the compression roller rotation, improves drying quality.

Description

Technical Field

[0001] This utility model relates to the field of powder coating drying technology, and more specifically, to a powder coating drying device for coating production. Background Technology

[0002] Paint is one type of coating we usually refer to as varnish. It refers to a type of liquid or solid material that is applied to the surface of an object and forms a thin film under certain conditions to provide protection, decoration, or other special functions (insulation, rust prevention, mildew prevention, heat resistance, etc.). Powder coating is a solid powdered synthetic resin coating composed of solid resin, pigments, fillers, and additives. In the powder coating production process, drying is one of the key steps. Its purpose is to remove moisture or solvents from the wet powder to ensure the fluidity, stability, and subsequent construction performance of the powder coating.

[0003] Chinese patent publication number CN222211061U discloses a powder coating drying device for paint production, including a box body, a feed cylinder fixedly installed at the top of the box body, the feed cylinder being connected to a drying chamber inside the box body, electric heating coils installed on the inner wall and bottom of the box body, the electric heating coils surrounding the drying chamber, and multiple layers of sieve plates installed inside the drying chamber. This utility model design extends the time it takes for the powder coating to fall to the bottom of the drying chamber through the multiple layers of sieve plates, enhancing the drying effect. The sieve plates filter out large particles of powder coating and crush them, improving filtration efficiency and avoiding coating waste. The bottom of the scraper contacts the bottom of the drying chamber, turning the powder coating and making the drying more uniform.

[0004] However, as can be seen from the accompanying drawings in the instruction manual, when drying powder coatings, the powder feeding rate is reduced by the cooperation of the sieve plate and the scraper and pressure roller located on the top of the sieve plate, thereby improving the drying quality. However, during the drying process, through static drying, the wet powder is prone to the phenomenon of "dry outer layer and wet inner layer", which affects the uniformity of drying and easily causes some powder coatings to adhere to the side wall and cannot be scraped off, affecting the quality of the dried finished product. Therefore, a powder coating drying device for coating production is proposed. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a powder coating drying device for coating production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a powder coating drying device for coating production, comprising a base, a plurality of connecting cylinders connected to the top of the base, and a top cover connected to the top of the connecting cylinders. The base, connecting cylinders, and top cover are combined to form a drying chamber. A bottom plate is fixedly connected to the bottom of the inner cavity of the connecting cylinders. A filter hole is provided on one side surface of the bottom plate. The bottom plate and the filter hole can reduce the powder coating feeding rate, forming multiple drying chambers inside the multiple connecting cylinders, thereby improving drying efficiency and quality. A stabilizing ring is fixedly connected to the center of the bottom of the bottom plate. An electric heating tube and a heat-conducting plate are provided in the inner cavity of the connecting cylinders. The electric heating tube heats the heat-conducting plate, which can dry the powder coating inside the connecting cylinders.

[0007] Both the base and the connecting cylinder have a rotating shaft in the middle. The rotating shaft in the middle of the base has a first scraper on its surface, and the rotating shaft in the middle of the connecting cylinder has a second scraper, a pressure roller, and a spiral blade. The top of the rotating shaft extends to the top of the top cover and is connected to a motor. Starting the motor controls the rotating shaft to drive the first scraper, the second scraper, the pressure roller, and the spiral blade to rotate. The second scraper can scrape off powder from the inner wall surface of the connecting cylinder and the surface of the heat-conducting plate. The spiral blade improves the stirring effect during the drying process. The pressure roller facilitates the crushing of lumpy powder and makes it easy to discharge through the filter holes. The first scraper scrapes off powder from the inner wall of the base, creating a gathering effect towards the center, which facilitates discharge.

[0008] Preferably, the bottom wall of the inner cavity of the base is set as a conical structure, multiple support frames are fixedly connected to the bottom of the base, and a discharge pipe is connected to the bottom of the base. The support frames improve the support stability of the base, and the discharge pipe facilitates material discharge.

[0009] Preferably, a connecting ring is fixedly connected to the bottom of the connecting cylinder and the bottom of the top cover. A ring groove is opened on the outer top of both the connecting cylinder and the base. The connecting ring is located in the middle of the ring groove. A fastening bolt is inserted into the side of the connecting ring. The base, connecting cylinder and top cover can be easily connected by the cooperation of the connecting ring and the ring groove, and the connection and fixing strength can be improved by the fastening bolt.

[0010] Preferably, the top of the top cover is connected to a feed pipe and an exhaust pipe, and a check valve is provided in the middle of the exhaust pipe. The feed pipe facilitates feeding, the exhaust pipe facilitates the discharge of dried moisture, and the check valve prevents external dust from entering the middle of the connecting cylinder.

[0011] Preferably, a square groove is provided at the bottom of the rotating shaft, and a square column is fixedly connected to the top of the rotating shaft. The square column is inserted into the middle of the square groove. Through the cooperation of the square groove and the square column, multiple rotating shafts can be easily connected and used for simultaneous rotation and driving.

[0012] Preferably, the second scraper is fixed on one side of the rotating shaft, the spiral blade is fixed in the middle of the rotating shaft, and the wall of the second scraper is in contact with the inner wall of the connecting cylinder. By rotating the shaft, the second scraper can be controlled to scrape the powder on the inner wall of the heat-conducting plate, and the spiral blade can be used to stir and improve the drying quality.

[0013] Preferably, a support rod is rotatably connected to the middle of the pressure roller, one end of which is fixed to one side of the rotating shaft. The pressure roller and the second scraper are located on both sides of the rotating shaft. The pressure roller is supported by the support rod, so that when the rotating shaft drives the pressure roller to rotate, the pressure roller will automatically rotate and squeeze the surface of the base plate, which facilitates the discharge of auxiliary powder coating through the filter holes and improves the use effect.

[0014] Preferably, a power connector is fixedly connected to one side of the connecting cylinder, and multiple power connectors are connected to each other by wires. When multiple connecting cylinders are connected in combination, multiple heating elements can be electrically connected through the power connectors, which facilitates connection to an external power source and convenient control via an external control panel.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model first controls the rotating shaft by starting the motor to drive the spiral blades and the second scraper to rotate, which can stir the drying powder coating in the middle of the connecting cylinder, realize dynamic drying, and prevent the powder coating from adhering to the wall, making it easy to scrape off by the second scraper, improving the stirring quality, thereby improving the drying quality. The rotating shaft drives the pressure roller to rotate, which can crush the blocky powder coating and improve the drying quality.

[0017] 2. This utility model also features a first scraper that can gather the dried powder material inside the base towards the center, facilitating discharge through the bottom outlet pipe. The powder can be fed through the filter holes on the surface of the base plate. The combination of the electric heating tube and the heat-conducting plate facilitates drying. The multiple connecting cylinders are combined with the top cover and the base for easy disassembly for individual cleaning or recombination as needed, improving the performance.

[0018] In summary, through the interaction of the above-mentioned multiple functions, stirring can be carried out during the drying process of powder coatings to achieve dynamic drying, and to prevent powder coatings from adhering to the wall, thereby improving the stirring quality. At the same time, blocky powder coatings can be crushed and crushed to improve the drying quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the cross-sectional split structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Base; 2. Connecting cylinder; 3. Base plate; 4. Filter hole; 5. Stabilizing ring; 6. Heat-conducting plate; 7. Heating tube; 8. Top cover; 9. Rotating shaft; 10. First scraper; 11. Second scraper; 12. Pressure roller; 13. Spiral blade; 14. Motor; 15. Feed pipe; 16. Exhaust pipe; 17. Power connector; 18. Support frame. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] As attached Figure 1-3 The powder coating drying device for paint production shown includes a base 1, with multiple connecting cylinders 2 connected to the top of the base 1. A top cover 8 is connected to the top of the connecting cylinders 2. The base 1, connecting cylinders 2, and top cover 8 are combined to form a drying chamber. A bottom plate 3 is fixedly connected to the bottom of the inner cavity of the connecting cylinder 2. A filter hole 4 is opened on one side surface of the bottom plate 3. The bottom plate 3 and the filter hole 4 can reduce the powder coating feeding rate and form multiple drying chambers inside the multiple connecting cylinders 2, thereby improving drying efficiency and quality. A stabilizing ring 5 is fixedly connected to the center of the bottom of the bottom plate 3. An electric heating tube 7 and a heat-conducting plate 6 are provided in the inner cavity of the connecting cylinder 2. The electric heating tube 7 heats the heat-conducting plate 6, and the powder coating inside the connecting cylinder 2 can be dried through the heat-conducting plate 6.

[0025] Both the base 1 and the connecting cylinder 2 have a rotating shaft 9 in the middle. The rotating shaft 9 in the middle of the base 1 has a first scraper 10 on its surface, and the rotating shaft 9 in the middle of the connecting cylinder 2 has a second scraper 11, a pressure roller 12, and a spiral blade 13 on its surface. The top of the rotating shaft 9 extends to the top of the top cover 8 and is connected to a motor 14. When the motor 14 is started, it controls the rotating shaft 9 to drive the first scraper 10, the second scraper 11, the pressure roller 12, and the spiral blade 13 to rotate. The second scraper 11 can scrape off the powder on the inner wall surface of the connecting cylinder 2 and the surface of the heat-conducting plate 6. The spiral blade 13 improves the stirring effect during the drying process. The pressure roller 12 facilitates the crushing of lumpy powder and makes it easy to discharge through the filter hole 4. The first scraper 10 scrapes off the powder on the inner wall of the base 1, which creates a gathering effect towards the center, making it easy to discharge.

[0026] As attached Figure 1-3As shown, the bottom wall of the inner cavity of the base 1 is set as a conical structure. Multiple support frames 18 are fixedly connected to the bottom of the base 1. A discharge pipe is connected to the bottom of the base 1. Connecting rings are fixedly connected to the bottom of the connecting cylinder 2 and the bottom of the top cover 8. Ring grooves are opened on the outer top of the connecting cylinder 2 and the base 1. The connecting ring is set in the middle of the ring groove. Fastening bolts are inserted into the side of the connecting ring. The top of the top cover 8 is connected to the feed pipe 15 and the exhaust pipe 16. A check valve is set in the middle of the exhaust pipe 16. The support frame 18 improves the support stability of the base 1. The discharge pipe facilitates material discharge. The cooperation of the connecting ring and the ring groove facilitates the combination and connection of the base 1, the connecting cylinder 2 and the top cover 8. The fastening bolts improve the connection and fixing strength. The feed pipe 15 facilitates material feeding. The exhaust pipe 16 facilitates the discharge of dried moisture. The check valve prevents external dust from entering the middle of the connecting cylinder 2.

[0027] As attached Figure 1-3 As shown, a square groove is provided at the bottom of the rotating shaft 9, and a square column is fixedly connected to the top of the rotating shaft 9. The square column is inserted into the middle of the square groove. The second scraper 11 is fixed to one side of the rotating shaft 9, and the spiral blade 13 is fixed to the middle of the rotating shaft 9. The wall of the second scraper 11 is in contact with the inner wall of the connecting cylinder 2. A support rod is rotatably connected to the middle of the pressure roller 12, and one end of the support rod is fixed to one side of the rotating shaft 9. The pressure roller 12 and the second scraper 11 are located on both sides of the rotating shaft 9. A power connector 17 is fixedly connected to one side of the connecting cylinder 2. Multiple power connectors 17 are connected by wires. Through the cooperation of the square groove and the square column, multiple rotating shafts can be easily connected. The shaft 9 is connected to the other shafts for simultaneous rotation and driving. The rotation of the shaft 9 controls the second scraper 11 to scrape the powder on the inner wall of the heat-conducting plate 6. The spiral blades 13 stir the powder to improve the drying quality. The support rod supports the pressure roller 12. When the shaft 9 drives the pressure roller 12 to rotate, the pressure roller 12 will automatically rotate and squeeze the surface of the bottom plate 3, which facilitates the discharge of the auxiliary powder coating through the filter hole 4 and improves the effect. The power connector 17 allows multiple heating tubes 7 to be electrically connected when multiple connecting cylinders 2 are combined, which is convenient for connecting to an external power source and for controlling the use through an external control panel.

[0028] It is worth noting that the motor is a servo motor with an encoder, and the number of rotations and rotation angle of the motor output shaft are controllable and highly accurate. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0029] Furthermore, in this application, an annular groove is axially provided on the inner wall of the threaded hole corresponding to the fastening bolt. A nylon 66 damping ring with a Shore hardness of 85A is embedded in the groove. The continuous axial clamping force generated by its elastic deformation forms a helical angle interference fit with the surface of the fastening bolt at 15°-20°. When the threaded pair is subjected to axial vibration load, the nylon insert can generate a maximum elastic compression of 0.3mm, which increases the friction coefficient between the thread contact surfaces from 0.15 to 0.68 (tested according to ASTM D1894 standard), effectively suppressing loosening displacement caused by thread springback.

[0030] The working principle of this utility model is as follows: When in use, three connecting cylinders 2 are spliced ​​to the top of the base 1 through connecting rings and ring grooves, and fixedly connected by fastening bolts. The top cover 8 is installed on the top connecting cylinder 2, and the rotating shaft 9 is spliced ​​to the square groove through a square column. The motor 14 is connected to the top rotating shaft 9.

[0031] The heating element 7 is electrically connected to the external power control panel via the power connector 17, thereby controlling the heating element 7 to heat the heat-conducting plate 6.

[0032] The powder coating is fed into the middle of the top connecting cylinder 2 through the feed pipe 15. The motor 14 is started to control the rotating shaft 9 to drive the second scraper 11 to scrape the inner wall of the connecting cylinder 2. The coating is stirred by the spiral blade 13 and crushed by the pressure roller 12. The crushed material falls into the middle of the second connecting cylinder 2 through the filter hole 4 for continuous drying and stirring, which reduces the powder coating feeding rate and improves the drying quality.

[0033] Until the dried powder coating falls to the middle of the base 1, the rotating shaft 9 drives the first scraper 10 to scrape the powder coating on the inner wall of the base 1 towards the middle, and it can be discharged through the discharge pipe.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Powder coating drying device for the production of paints, comprising a base (1), characterized by: The top of the base (1) is connected to multiple connecting cylinders (2), and the top of the connecting cylinder (2) is connected to a top cover (8). The bottom of the inner cavity of the connecting cylinder (2) is fixedly connected to a base plate (3). A filter hole (4) is opened on one side surface of the base plate (3). A stabilizing ring (5) is fixedly connected to the center of the bottom of the base plate (3). The inner cavity of the connecting cylinder (2) is provided with an electric heating tube (7) and a heat-conducting plate (6). The base (1) and the connecting cylinder (2) are both provided with a rotating shaft (9) in the middle. The rotating shaft (9) in the middle of the base (1) is provided with a first scraper (10). The rotating shaft (9) in the middle of the connecting cylinder (2) is provided with a second scraper (11), a pressure roller (12), and a spiral blade (13). The top of the rotating shaft (9) extends to the top of the top cover (8) and is connected to a motor (14).

2. The powder paint drying apparatus for paint production according to claim 1, characterized in that: The bottom wall of the inner cavity of the base (1) is set as a conical structure, and multiple support frames (18) are fixedly connected to the bottom of the base (1). The bottom of the base (1) is connected to a discharge pipe.

3. The powder paint drying apparatus for paint production according to claim 1, characterized in that: The bottom of the connecting cylinder (2) and the bottom of the top cover (8) are both fixedly connected with connecting rings. The top of the connecting cylinder (2) and the base (1) are both provided with ring grooves. The connecting rings are located in the middle of the ring grooves, and fastening bolts are inserted into the side of the connecting rings.

4. The powder paint drying apparatus for paint production according to claim 1, characterized in that: The top of the top cover (8) is connected to a feed pipe (15) and an exhaust pipe (16), and a check valve is provided in the middle of the exhaust pipe (16).

5. The powder paint drying apparatus for paint production according to claim 1, characterized in that: The bottom of the rotating shaft (9) is provided with a square groove, and the top of the rotating shaft (9) is fixedly connected with a square column, which is inserted into the middle of the square groove.

6. The powder paint drying apparatus for paint production according to claim 1, characterized in that: The second scraper (11) is fixed on one side of the rotating shaft (9), and the spiral blade (13) is fixed in the middle of the rotating shaft (9). The wall of the second scraper (11) is in contact with the inner wall of the connecting cylinder (2).

7. The powder paint drying apparatus for paint production according to claim 1, characterized in that: The pressure roller (12) is rotatably connected to a support rod in the middle. One end of the support rod is fixed to one side of the rotating shaft (9). The pressure roller (12) and the second scraper (11) are located on both sides of the rotating shaft (9).

8. The powder paint drying apparatus for paint production according to claim 1, characterized in that: A power connector (17) is fixedly connected to one side of the connecting cylinder (2), and multiple power connectors (17) are connected to each other by wires.

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