A high barrier film barrier layer coating device

Abstract

The utility model discloses a kind of high-barrier film barrier layer coating devices, it is related to high-barrier film coating device technical field.The utility model includes coating pool and drying oven, further includes: drying mechanism, the drying mechanism is arranged on drying oven, the drying mechanism is used to carry out drying after high-barrier film is coated barrier layer.The utility model passes through drying mechanism, specifically after high-barrier film enters drying oven, motor one drives shaft one, disc rotates, make transmission link slide in the sliding slot of transmission plate, drive support rod and fan blade rotation produce wind power, accelerate the airflow flow in drying oven, this makes the heat generated by electric hot plate quickly spread and evenly distributed, avoid local temperature uneven, ensure that high-barrier film is heated evenly when moving under the guidance of guide roller, make barrier layer quickly and consistently dry, improve drying quality and efficiency, guarantee drying effect stability, enhance the reliability of device to high-barrier film coating post-processing.

Description

Technical Field

[0001] This utility model belongs to the technical field of high barrier film coating device, and in particular relates to a high barrier film barrier layer coating device. Background Technology

[0002] High-barrier membranes, as materials with excellent gas and water vapor barrier properties, are widely used in many fields such as food, medicine, and electronics. To further improve their barrier properties, a barrier layer is often coated on the surface of the high-barrier membrane. Currently, when coating a high-barrier membrane with a barrier layer, the coated high-barrier membrane needs to be dried to allow the barrier layer to solidify and firmly adhere to the membrane surface.

[0003] However, existing drying equipment typically relies on natural airflow, which results in low drying efficiency. A significant amount of time is wasted waiting for the film to dry, severely impacting production progress. Furthermore, the natural airflow makes it difficult to ensure uniformity, leading to inconsistent drying levels in different parts of the film. This, in turn, affects the overall quality of the high-barrier film, resulting in unstable product performance and making it difficult to meet market demands for high-quality products. Utility Model Content

[0004] The purpose of this invention is to provide a high-barrier film coating device. By setting up a drying mechanism, specifically, after the high-barrier film enters the drying chamber, a motor drives a rotating shaft and a turntable to rotate, causing a transmission rod to slide within a groove on a transmission plate. This drives the support rod and fan blades to rotate, generating airflow and accelerating the airflow inside the drying chamber. This allows the heat generated by the electric heating plate to spread quickly and evenly, avoiding uneven local temperatures. It ensures that all parts of the high-barrier film are heated evenly as it moves under the guidance of the guide rollers, resulting in rapid and consistent drying of the barrier layer. This improves drying quality and efficiency, ensures stable drying results, enhances the reliability of the device for post-coating treatment of the high-barrier film, and solves the problem that existing drying devices typically rely on natural airflow.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a high-barrier membrane barrier layer coating device, comprising a coating tank and a drying oven, and further comprising: A drying mechanism, mounted on a drying chamber, is used to dry a high-barrier film after it has been coated with a barrier layer. The drying mechanism includes four electrically heated plates mounted on the inner wall of the drying chamber, and several guide rollers rotatably connected to the rear inner wall of the drying chamber. A coating mechanism is provided on a coating tank and is used to coat a barrier layer onto a high-barrier membrane. The coating mechanism includes a mounting frame fixedly connected to the top of the coating tank. An electric push rod is mounted on the top of the mounting frame, and the movable end of the electric push rod passes through the top of the mounting frame and is slidably connected to the top of the mounting frame. The electric heating plates are evenly distributed on the left and right sides of the drying oven, and the electric heating plates on the same side are symmetrical. The electric push rod is installed on the top of the mounting frame by bolts.

[0006] Furthermore, the drying mechanism also includes an air intake assembly disposed inside the drying chamber. The air intake assembly is used to accelerate airflow inside the drying chamber, thereby ensuring uniform heat distribution within the drying chamber; and A drive assembly is mounted on the drying chamber and is used to provide power for the air intake assembly to accelerate the airflow inside the drying chamber. A transmission assembly is mounted on the drying chamber and is used to transmit the power provided by the drive assembly to the air intake assembly. The air intake assembly, drive assembly, and transmission assembly are all designed in two sets, and the two sets of air intake assembly, drive assembly, and transmission assembly are respectively set on the front and rear sides of the drying box and arranged in a staggered manner.

[0007] Furthermore, the coating mechanism further includes a coating assembly disposed at the top of the coating tank, the coating assembly being used to allow the high-barrier membrane to enter the coating tank and contact the barrier coating layer; and A flow stabilizing component is disposed inside the coating tank and is used to stabilize the barrier coating layer in the coating tank. A stirring assembly is disposed inside the coating tank and is used to mix and stir the barrier coating in the coating tank.

[0008] Furthermore, a support rod is rotatably connected to the inner front wall of the drying oven, and a fan blade is fixedly connected to the outer wall of the support rod; The fan blades are fixedly connected to the support rod by welding.

[0009] Furthermore, the drive assembly includes a motor installed on the front side of the drying chamber, the output shaft of the motor is fixedly connected to a rotating shaft via a coupling, the end of the rotating shaft away from the motor extends into the interior of the drying chamber and is rotatably connected to the drying chamber, and a turntable is fixedly connected to the end of the rotating shaft away from the motor. The motor is bolted to the right side of the mounting box at the front of the drying oven, and the shaft is rotatably connected to the drying oven via a sealed bearing.

[0010] Furthermore, the transmission assembly includes a transmission rod fixedly connected to the side of the turntable away from the rotating shaft, a transmission plate fixedly connected to the outer wall of the fan blade, a sliding groove provided on the transmission plate, and the transmission rod passing through the transmission plate and slidably connected to the sliding groove. The slide is designed as a long strip with semi-circular sides that are adapted to the transmission rod.

[0011] Furthermore, the coating assembly includes a support frame fixedly connected to the movable end of the electric push rod, two guide rods fixedly connected to the top of the support frame, the top ends of the two guide rods passing through the top of the support frame and slidably connected to the top of the support frame, an extrusion roller rotatably connected to the bottom of the support frame, and a drain pipe fixedly connected to the bottom of the coating tank, with a valve installed on the outer wall of the drain pipe. Two guide rods are symmetrically distributed on the top of the support frame, and the two guide rods are located on the front and rear sides of the electric push rod, respectively.

[0012] Furthermore, the flow stabilizing assembly includes two flow stabilizing plates fixedly connected to the inner wall of the coating tank, and each of the two flow stabilizing plates is provided with a plurality of flow stabilizing holes; The flow stabilizing holes on the two flow stabilizing plates are evenly distributed on the corresponding flow stabilizing plates, and the number of flow stabilizing holes on the lower flow stabilizing plate is less than the number of flow stabilizing holes on the upper flow stabilizing plate.

[0013] Furthermore, the stirring assembly includes a second motor installed on the left side of the coating tank. The output shaft of the second motor is fixedly connected to a second rotating shaft via a coupling. The right end of the second rotating shaft extends to the inner right wall of the coating tank and is rotatably connected to the coating tank. Several stirring rods are fixedly connected to the outer wall of the second rotating shaft. Several stirring rods are connected to the rotating shaft 2 by welding.

[0014] This utility model has the following beneficial effects: 1. This utility model, through the setting of a drying mechanism, specifically, after the high-barrier film enters the drying chamber, motor one drives rotating shaft one and turntable to rotate, causing the transmission rod to slide in the groove of the transmission plate, driving the support rod and fan blade to rotate and generate wind power, accelerating the airflow inside the drying chamber. This allows the heat generated by the electric heating plate to spread quickly and evenly, avoiding uneven local temperature, ensuring that all parts of the high-barrier film are heated evenly when moving under the guidance of the guide roller, so that the barrier layer dries quickly and consistently, improving drying quality and efficiency, ensuring stable drying effect, and enhancing the reliability of the device for post-coating treatment of high-barrier films.

[0015] 2. This utility model incorporates a stirring assembly. Specifically, during the coating process, motor two drives shaft two to rotate, causing the stirring rod on the outer wall of shaft two to rotate accordingly. The trapezoidal stirring plate at one end and the U-shaped stirring plate at the other end thoroughly stir the coating in the coating tank. This ensures that the components of the coating are evenly mixed, preventing sedimentation and stratification, ensuring consistent coating concentration and composition, stabilizing the performance of the coating in contact with the high-barrier membrane, improving the uniformity and reliability of the coating quality, guaranteeing the coating effect of the high-barrier membrane barrier layer, and enhancing the practicality of the device.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a front cross-sectional view of the present invention. Figure 4 This is a schematic diagram of the structure of the second motor of this utility model; Figure 5 This is a schematic diagram of the structure of the motor of this utility model; Figure 6 This utility model Figure 3 A magnified structural diagram of A in the middle; Figure 7 This utility model Figure 3 A magnified structural diagram of B in the diagram.

[0019] The attached diagram lists the components represented by each number as follows: 1. Coating tank; 11. Drying oven; 2. Drying mechanism; 21. Electric heating plate; 211. Guide roller; 22. Exhaust fan assembly; 221. Support rod; 222. Fan blade; 23. Drive assembly; 231. Motor 1; 232. Rotating shaft 1; 233. Turntable; 24. Transmission assembly; 241. Transmission rod; 242. Transmission plate; 243. Slide groove; 3. Coating mechanism; 31. Mounting frame; 311. Electric push rod; 32. Coating assembly; 321. Support frame; 322. Guide rod; 323. Extrusion roller; 324. Drain pipe; 325. Valve; 33. Flow stabilizing assembly; 331. Flow stabilizing plate; 332. Flow stabilizing hole; 34. Stirring assembly; 341. Motor 2; 342. Rotating shaft 2; 343. Stirring rod. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-7 As shown, this utility model is a high-barrier film barrier layer coating device, including a coating tank 1 and a drying oven 11, and also includes: Drying mechanism 2 is installed on drying chamber 11. Drying mechanism 2 is used to dry the high-barrier film after coating with a barrier layer. Drying mechanism 2 includes four electric heating plates 21 installed on the inner wall of drying chamber 11, and several guide rollers 211 rotatably connected to the rear inner wall of drying chamber 11; and The coating mechanism 3 is set on the coating tank 1. The coating mechanism 3 is used to coat the high barrier film with a barrier layer. The coating mechanism 3 includes a mounting frame 31 fixedly connected to the top of the coating tank 1. An electric push rod 311 is installed on the top of the mounting frame 31. The movable end of the electric push rod 311 passes through the top of the mounting frame 31 and is slidably connected to the top of the mounting frame 31. The electric heating plates 21 are evenly distributed on the left and right sides of the drying oven 11, and the electric heating plates 21 on the same side are symmetrical. The electric push rod 311 is installed on the top of the mounting frame 31 by bolts.

[0022] The drying mechanism 2 also includes an air intake assembly 22, which is disposed inside the drying chamber 11. The air intake assembly 22 is used to accelerate the airflow inside the drying chamber 11, so that the heat inside the drying chamber 11 is evenly distributed; and Drive assembly 23 is mounted on drying chamber 11 and is used to provide power for the air intake assembly 22 to accelerate the airflow inside drying chamber 11. The transmission assembly 24 is mounted on the drying chamber 11. The transmission assembly 24 is used to transmit the power provided by the drive assembly 23 to the air intake assembly 22. The air intake assembly 22, drive assembly 23 and transmission assembly 24 are all designed in two sets, and the two sets of air intake assembly 22, drive assembly 23 and transmission assembly 24 are respectively mounted on the front side and the rear side of the drying chamber 11 and are arranged in a staggered manner.

[0023] The coating mechanism 3 also includes a coating assembly 32, which is disposed at the top of the coating tank 1. The coating assembly 32 is used to allow the high-barrier membrane to enter the coating tank 1 and come into contact with the barrier coating layer; and A flow stabilizing component 33 is disposed inside the coating tank 1 and is used to stabilize the barrier coating layer in the coating tank 1. A stirring assembly 34 is disposed inside the coating tank 1 and is used to mix and stir the barrier layer coating in the coating tank 1.

[0024] A support rod 221 is rotatably connected to the inner front wall of the drying oven 11, and a fan blade 222 is fixedly connected to the outer wall of the support rod 221. When the fan blade 222 rotates around the axis of the support rod 221, it generates wind inside the drying oven 11, thereby accelerating the airflow speed inside the drying oven 11.

[0025] The drive assembly 23 includes a motor 231 installed on the front side of the drying chamber 11. The output shaft of the motor 231 is fixedly connected to a rotating shaft 232 via a coupling. The end of the rotating shaft 232 away from the motor 231 extends into the interior of the drying chamber 11 and is rotatably connected to the drying chamber 11. The end of the rotating shaft 232 away from the motor 231 is fixedly connected to a turntable 233, wherein the turntable 233 is fixedly connected to the rotating shaft 232 by welding.

[0026] The transmission assembly 24 includes a transmission rod 241 fixedly connected to the side of the turntable 233 away from the rotating shaft 232. A transmission plate 242 is fixedly connected to the outer wall of the fan blade 222. A sliding groove 243 is provided on the transmission plate 242. The transmission rod 241 passes through the transmission plate 242 and is slidably connected to the sliding groove 243. The transmission plate 242 is fixedly connected to the fan blade 222 by welding.

[0027] The coating assembly 32 includes a support frame 321 fixedly connected to the movable end of the electric push rod 311. Two guide rods 322 are fixedly connected to the top of the support frame 321. The top ends of the two guide rods 322 pass through the top of the support frame 321 and are slidably connected to the top of the support frame 321. An extrusion roller 323 is rotatably connected to the bottom of the support frame 321. A drain pipe 324 is fixedly connected to the bottom of the coating tank 1. A valve 325 is installed on the outer wall of the drain pipe 324. The inner bottom wall of the coating tank 1 is designed to be conical, and the drain pipe 324 is located at the center of the bottom of the coating tank 1.

[0028] The flow stabilizing assembly 33 includes two flow stabilizing plates 331 fixedly connected to the inner wall of the coating tank 1. Each of the two flow stabilizing plates 331 has a plurality of flow stabilizing holes 332. The flow stabilizing holes 332 on the two flow stabilizing plates 331 are evenly distributed on the corresponding flow stabilizing plates 331, and the number of flow stabilizing holes 332 on the lower flow stabilizing plate 331 is less than the number of flow stabilizing holes 332 on the upper flow stabilizing plate 331.

[0029] The stirring assembly 34 includes a second motor 341 installed on the left side of the coating tank 1. The output shaft of the second motor 341 is fixedly connected to a second rotating shaft 342 via a coupling. The right end of the second rotating shaft 342 extends to the inner right wall of the coating tank 1 and is rotatably connected to the coating tank 1. Several stirring rods 343 are fixedly connected to the outer wall of the second rotating shaft 342. One end of each stirring rod 343 is fixedly connected to a trapezoidal stirring plate, and the other end is fixedly connected to a U-shaped stirring plate.

[0030] A specific application of this embodiment is as follows: During the coating process of a high-barrier film using this device, after the high-barrier film with the coated barrier layer enters the drying chamber 11, four electric heating plates 21 installed on the inner wall of the drying chamber 11 begin to work. The electric heating plates 21 on the left and right sides are symmetrically distributed vertically, enabling simultaneous heating of the high-barrier film from both sides. Combined with the guiding action of several guide rollers 211, the high-barrier film is heated evenly during its smooth movement within the drying chamber 11. To accelerate the airflow inside the drying chamber 11 and distribute the heat more evenly, the motor... After the 231 is started, its output shaft drives the rotating shaft 232 to rotate through the coupling. The rotating shaft 232 drives the turntable 233 to rotate, and the transmission rod 241 on the turntable 233 moves accordingly. The transmission rod 241 slides in the groove 243 of the transmission plate 242, thereby driving the support rod 221 to rotate at a certain angle through the transmission plate 242. The fan blades 222 on the support rod 221 generate wind power as the support rod 221 rotates, which accelerates the airflow inside the drying chamber 11, further improves the uniformity of heat distribution, and ensures that the barrier layer on the high barrier film can be dried quickly and evenly.

[0031] When the high-barrier film needs to be coated, the electric push rod 311 at the top of the mounting frame 31 is activated. Its movable end drives the support frame 321 in the coating assembly 32 to move downward. The two guide rods 322 guide the support frame 321 during its movement, so that the extrusion roller 323 at the bottom of the support frame 321 moves smoothly downward, pressing the high-barrier film into the coating tank 1, so that it comes into contact with the barrier coating in the coating tank 1, completing the coating operation. At the same time, the stirring assembly 34 is responsible for mixing and stirring the barrier coating in the coating tank 1. After the motor 341 is started, its output shaft drives the rotating shaft 342 to rotate through the coupling. Several stirring rods 343 on the outer wall of the rotating shaft 342 rotate accordingly. The trapezoidal stirring plate at one end of the stirring rod 343 and the U-shaped stirring plate at the other end... The stirring plate can fully agitate the coating to ensure uniform mixing. When the coating needs to be discharged, the valve 325 on the outer wall of the drain pipe 324 is opened, and the coating can be discharged from the bottom of the cone-shaped coating tank 1 through the drain pipe 324. During the coating process, the flow stabilizing component 33 can stabilize the barrier layer coating in the coating tank 1. Both flow stabilizing plates 331 with a certain angle are provided with several flow stabilizing holes 332. The number of flow stabilizing holes 332 on the lower flow stabilizing plate 331 is less than that on the upper one, which can effectively weaken the turbulence of the coating and avoid excessive fluctuation of the coating affecting the coating effect. At the same time, the space reserved between the two flow stabilizing plates 331 and the inner wall of the coating tank 1 also helps to stabilize the flow of the coating and avoid large fluctuations of the coating in the coating tank 1, which would affect the coating effect of the high barrier membrane.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-barrier membrane barrier layer coating apparatus, comprising a coating tank (1) and a drying oven (11), characterized in that, Also includes: A drying mechanism (2) is installed on a drying chamber (11). The drying mechanism (2) is used to dry the high-barrier film after coating it with a barrier layer. The drying mechanism (2) includes four electric heating plates (21) installed on the inner wall of the drying chamber (11). Several guide rollers (211) are rotatably connected to the rear inner wall of the drying chamber (11). The coating mechanism (3) is disposed on the coating tank (1) and is used to coat a barrier layer onto a high barrier film. The coating mechanism (3) includes a mounting frame (31) fixedly connected to the top of the coating tank (1). An electric push rod (311) is mounted on the top of the mounting frame (31). The movable end of the electric push rod (311) passes through the top of the mounting frame (31) and is slidably connected to the top of the mounting frame (31). Among them, the electric heating plates (21) are evenly distributed on the left and right sides of the drying box (11), and the electric heating plates (21) on the same side are symmetrical. The electric push rod (311) is installed on the top of the mounting frame (31) by bolts.

2. The high-barrier film barrier layer coating device according to claim 1, characterized in that, The drying mechanism (2) further includes an air intake component (22), which is disposed inside the drying chamber (11). The air intake component (22) is used to accelerate the airflow inside the drying chamber (11) so that the heat inside the drying chamber (11) is evenly distributed. as well as A drive assembly (23) is disposed on the drying chamber (11) and is used to provide power for the air intake assembly (22) to accelerate the airflow inside the drying chamber (11); A transmission assembly (24) is disposed on the drying chamber (11) and is used to transmit the power provided by the drive assembly (23) to the air intake assembly (22). Among them, the air-drawing assembly (22), the drive assembly (23) and the transmission assembly (24) are all designed in two sets, and the two sets of air-drawing assembly (22), drive assembly (23) and transmission assembly (24) are respectively set on the front and rear sides of the drying box (11) and arranged in an alternating manner.

3. The high-barrier film barrier layer coating device according to claim 2, characterized in that, The coating mechanism (3) further includes a coating assembly (32) disposed at the top of the coating tank (1), the coating assembly (32) being used to allow the high-barrier membrane to enter the coating tank (1) and contact the barrier coating layer; and A flow stabilizing component (33) is disposed inside the coating tank (1) and is used to stabilize the barrier coating in the coating tank (1). A stirring assembly (34) is disposed inside the coating tank (1) and is used to mix and stir the barrier coating in the coating tank (1).

4. The high-barrier film barrier layer coating device according to claim 2, characterized in that, A support rod (221) is rotatably connected to the inner front wall of the drying box (11), and a fan blade (222) is fixedly connected to the outer wall of the support rod (221). Among them, the front inner wall of the drying box (11) is fixedly connected to two support plates, and the support rod (221) is rotatably connected to the two support plates through bearings.

5. The high-barrier film barrier layer coating device according to claim 2, characterized in that, The drive assembly (23) includes a motor (231) installed on the front side of the drying chamber (11). The output shaft of the motor (231) is fixedly connected to a rotating shaft (232) via a coupling. The end of the rotating shaft (232) away from the motor (231) extends into the interior of the drying chamber (11) and is rotatably connected to the drying chamber (11). The end of the rotating shaft (232) away from the motor (231) is fixedly connected to a turntable (233). The drying box (11) is fixedly connected to the front of the mounting box. The motor (231) is installed on the right side of the mounting box, and the rotating shaft (232) and the turntable (233) are located inside the mounting box.

6. The high-barrier film barrier layer coating device according to claim 4, characterized in that, The transmission assembly (24) includes a transmission rod (241) fixedly connected to the side of the turntable (233) away from the rotating shaft (232), a transmission plate (242) fixedly connected to the outer wall of the fan blade (222), a sliding groove (243) is provided on the transmission plate (242), and the transmission rod (241) passes through the transmission plate (242) and is slidably connected to the sliding groove (243); The transmission rod (241) is fixedly connected to the turntable (233) by welding, and the transmission rod (241) is compatible with the slide groove (243).

7. The high-barrier film barrier layer coating device according to claim 3, characterized in that, The coating assembly (32) includes a support frame (321) fixedly connected to the movable end of an electric push rod (311). Two guide rods (322) are fixedly connected to the top of the support frame (321). The top ends of the two guide rods (322) pass through the top of the support frame (321) and are slidably connected to the top of the support frame (321). An extrusion roller (323) is rotatably connected to the bottom of the support frame (321). A drain pipe (324) is fixedly connected to the bottom of the coating tank (1). A valve (325) is installed on the outer wall of the drain pipe (324). The support frame (321) is fixedly connected to the movable end of the electric push rod (311) by welding, and the electric push rod (311) drives the extrusion roller (323) to move downward, so that the high barrier film comes into contact with the interlayer coating in the coating pool (1).

8. The high-barrier film barrier layer coating device according to claim 3, characterized in that, The flow stabilizing component (33) includes two flow stabilizing plates (331) fixedly connected to the inner wall of the coating tank (1), and each of the two flow stabilizing plates (331) has a plurality of flow stabilizing holes (332). The two flow stabilizers (331) are fixedly connected to the inside of the coating tank (1) at a certain angle, and a certain space is reserved between the two flow stabilizers (331) and the inner wall of the coating tank (1).

9. The high-barrier film barrier layer coating device according to claim 3, characterized in that, The stirring assembly (34) includes a second motor (341) installed on the left side of the coating tank (1). The output shaft of the second motor (341) is fixedly connected to a second rotating shaft (342) via a coupling. The right end of the second rotating shaft (342) extends to the inner wall of the right side of the coating tank (1) and is rotatably connected to the coating tank (1). Several stirring rods (343) are fixedly connected to the outer wall of the second rotating shaft (342). Among them, motor 2 (341) is installed on the left side of coating tank (1) by bolts, and rotating shaft 2 (342) is rotatably connected to coating tank (1) by sealed bearing.

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