Powder coating extrusion and pulverization device

Abstract

The application relates to a powder coating extrusion and crushing device, which comprises an extruder, a tabletting mechanism arranged below the output end of the extruder, a conveying mechanism arranged below the tabletting mechanism and conveying tablet materials, a cooling air cover arranged on the conveying mechanism and provided with a fan coil, a guide plate arranged on the inner side of the cooling air cover, the guide plate being arranged in an inclined mode and the lower end of the guide plate being capable of being connected with the conveying mechanism, the tablet materials on the conveying mechanism being capable of falling on the conveying mechanism again after passing through the guide plate, a crushing mechanism arranged below the tail end of the conveying mechanism, and a splash-proof cover arranged above the crushing mechanism. The tablet materials on the conveying mechanism can be moved to a certain height by the guide plate arranged in an inclined mode and then fall on the conveying mechanism again, so that the tablet materials are broken, the subsequent crushing mechanism is facilitated to process, the crushing efficiency is improved, the splash-proof cover is arranged above the crushing mechanism, dust and fragments are prevented from splashing, and the device is convenient to use.

Description

Technical Field

[0001] This application relates to the field of powder coating production technology, and in particular to a powder coating extrusion and crushing device. Background Technology

[0002] Powder coatings, as an innovative type of coating, are characterized by being solvent-free and 100% solid powder. They have gained widespread attention due to their numerous advantages, including being solvent-free, pollution-free, recyclable, environmentally friendly, having good adhesion, saving energy and resources, and being easy to apply, thus reducing labor intensity. Powder coatings encompass both thermoplastic and thermosetting powder coatings. The production process of thermosetting powder coatings involves multiple steps, including raw material preparation, premixing, melt extrusion, cooling and grinding, and sieving. Specifically, the processing steps typically involve first mixing the raw materials, then performing melt cross-linking processing using an extrusion device, followed by extruding the molten material into sheets using a tableting device, and finally cooling, crushing, and grinding.

[0003] In existing technologies, when the tableting device extrudes the molten material into tablets, the material is still at a high temperature. If natural cooling is used at this time, the cooling effect is poor, resulting in the material maintaining a high temperature during subsequent crushing operations, leading to unsatisfactory crushing results. To solve this problem, an additional cooling device is needed. For example, Chinese Patent No. CN215970189U, published on March 8, 2012, discloses a tableting system for powder coatings, including an extrusion device, a tableting device, a conveying device, and a crushing device. The tableting device includes a pressure roller assembly and a water-cooling assembly, the water-cooling assembly being used to cool the pressure roller assembly. The conveying device includes a conveying assembly and a first cooling fan, the first cooling fan being mounted on top of the conveying assembly and located in the middle and / or rear section of the conveying assembly. The crushing device includes a crushing roller assembly, a second cooling fan, and a collection box, with the outlet of the second cooling fan aligned with the outlet of the crushing roller assembly.

[0004] The above-mentioned cooling components, first cooling fan and second cooling fan can cool the sheet material on the pressure roller assembly, conveying assembly and crushing device respectively, and fully cool the extruded material. The cooling device and the material cooling are uniform, which is beneficial to improve the cooling efficiency of the tableting system. However, the structure of the water cooling component is not specified in this application. At the same time, the crushing device is only set at the end of the conveying device, which may contain large pieces that affect the crushing effect. Therefore, it is necessary to design a powder coating extrusion crushing device with high cooling efficiency and good crushing effect. Utility Model Content

[0005] This application provides a powder coating extrusion and crushing device with high cooling efficiency and good crushing effect.

[0006] The powder coating extrusion and pulverization device provided in this application adopts the following technical solution:

[0007] A powder coating extrusion and pulverizing device includes an extruder, a tableting mechanism disposed below the output end of the extruder, a conveying mechanism disposed below the tableting mechanism and conveying tablets thereon, a cooling hood disposed on the conveying mechanism and a fan coil unit disposed on the cooling hood, a guide plate disposed on the inner side of the cooling hood, the guide plate being inclined and its lower end being able to connect with the conveying mechanism, the tablets on the conveying mechanism being able to fall back onto the conveying mechanism after passing through the guide plate, a pulverizing mechanism disposed below the end of the conveying mechanism, and a splash guard disposed above the pulverizing mechanism.

[0008] Preferably, the tablet pressing mechanism includes a mounting plate and pressure rollers disposed on the mounting plate. The pressure rollers are arranged in pairs, and multiple cooling channels are provided inside the pressure rollers, with the ends of the multiple cooling channels connected to each other. The cooling channels include interconnected radial channels and axial channels, and the cross-sections of the radial channels and axial channels are U-shaped.

[0009] Preferably, the radial channels are located at both ends of the pressure roller and are uniformly arranged along the radial direction of the pressure roller, while the axial channels are arranged close to the outer side of the pressure roller.

[0010] Preferably, the radial channel and the axial channel are cooling water channels or cooling air channels.

[0011] Preferably, there are multiple cooling hoods, and the bottom of the cooling hood is provided with a folded edge and is connected to the conveying mechanism through the folded edge, and a fixing hole is provided on the folded edge.

[0012] Preferably, the cooling shroud includes a first shroud, a second shroud and a third shroud arranged in sequence. The first shroud is connected to the tablet pressing mechanism, and the ends of the first shroud, the second shroud and the third shroud are movably connected by buckles and snaps.

[0013] Preferably, the guide plate is provided inside both the second and third wind hoods.

[0014] Preferably, the air outlet of the fan coil unit is inclined downward and faces the guide plate.

[0015] Preferably, the guide plate is an arc-shaped plate or a sloping plate, and both ends of the guide plate are movably connected to the cooling fan shroud.

[0016] Preferably, a collision plate is provided behind the guide plate, and the two sides of the collision plate are movably connected to the cooling hood and the collision plate is arranged perpendicular to the conveying mechanism.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. This application improves the cooling efficiency of sheet material by setting a cooling hood on the conveying mechanism; at the same time, a guide plate is set inside the cooling hood. Since the guide plate is set at an angle and its lower end is connected to the conveying mechanism, the sheet material on the conveying mechanism will fall back onto the conveying mechanism after passing through the guide plate, breaking larger sheet materials, which is convenient for subsequent crushing mechanism to process and improve crushing efficiency. Meanwhile, a splash guard is set above the crushing mechanism to avoid dust and fragments splashing, which is convenient for use.

[0019] 2. By setting interconnected radial and axial channels inside the pressure roller of the tableting mechanism, with the radial channels located near the outer side of the pressure roller and the axial channels located at both ends of the pressure roller, the cooling efficiency of the pressure roller can be improved, extruded material can be prevented from sticking together, and the integrity of the tablet can be guaranteed.

[0020] 3. By setting multiple cooling hoods, the cooling of the sheet material on the conveying mechanism can be improved, ensuring stable conveying of the sheet material and facilitating subsequent crushing work; by setting guide plates inside the second and third hoods, the sheet material with stable shape and a certain degree of brittleness conveyed on the conveying mechanism can be lifted to a certain height and then dropped, which can break larger sheet material into smaller sheet material; by setting a collision plate behind the guide plate, the crushing efficiency can be further increased, which is beneficial to the subsequent crushing process. Attached Figure Description

[0021] Figure 1 This is a perspective view of the powder coating extrusion and pulverizing apparatus in a preferred embodiment of this application.

[0022] Figure 2 This is a perspective view of the powder coating extrusion and pulverizing apparatus in a preferred embodiment of this application.

[0023] Figure 3 This is a cross-sectional view of the pressure roller in a preferred embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the structure of the cooling fan shroud in a preferred embodiment of this application.

[0025] Figure 5 This is a cross-sectional view of the cooling fan shroud in a preferred embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Extruder; 2. Tableting mechanism; 201. Pressure roller; 201a. Radial channel; 201b. Axial channel; 3. Conveying mechanism; 4. Cooling hood; 401. First hood; 402. Second hood; 403. Third hood; 5. Fan coil unit; 6. Guide plate; 7. Splash guard; 8. Collision plate. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] This application discloses a powder coating extrusion and pulverizing device.

[0029] Reference Figures 1 to 5 A powder coating extrusion and crushing device includes an extruder 1, a tableting mechanism 2 below the output end of the extruder 1, a conveying mechanism 3 below the tableting mechanism 2, and a tablet conveying mechanism 3 conveying tablets. A cooling hood 4 is provided on the conveying mechanism 3, and a fan coil unit 5 is provided on the cooling hood 4. A guide plate 6 is provided on the inner side of the cooling hood 4. The guide plate 6 is inclined and its lower end can connect with the conveying mechanism 3. The tablets on the conveying mechanism 3 can fall back onto the conveying mechanism 3 after passing through the guide plate 6, which can crush larger tablets for subsequent processing. A crushing mechanism is provided below the end of the conveying mechanism 3, and a splash guard 7 is provided above the crushing mechanism. The splash guard 7 can reduce dust and prevent fragments from splashing, which facilitates processing.

[0030] Reference Figure 2 and Figure 3 The tablet pressing mechanism 2 includes a mounting plate and a pressure roller 201 mounted on the mounting plate. The pressure rollers 201 are arranged in pairs. Multiple cooling channels are provided inside the pressure rollers 201, and the ends of the multiple cooling channels are connected. The cooling channels include radial channels 201a and axial channels 201b that are connected to each other. The cross-section of the radial channels 201a and axial channels 201b is U-shaped. The radial channels 201a are located at both ends of the pressure rollers 201 and are uniformly arranged along the radial direction of the pressure rollers 201. The axial channels 201b are arranged near the outer side of the pressure rollers 201. Specifically, in this embodiment, the radial channels 201a and axial channels 201b are cooling water channels or cooling air channels.

[0031] Reference Figure 1 , Figure 4 and Figure 5 Multiple cooling hoods 4 are provided. The air outlets of the fan coil units 5 on the cooling hoods 4 are inclined downwards and face the guide plate 6 to ensure that the cold air can move along the surface of the sheet material and improve the cooling efficiency. The bottom of the cooling hoods 4 is provided with a folded edge and is connected to the conveying mechanism 3 through the folded edge. The folded edge is provided with fixing holes. The cooling hoods 4 include a first hood 401, a second hood 402 and a third hood 403 arranged in sequence. The first hood 401 is connected to the pressing mechanism 2. The ends of the first hood 401, the second hood 402 and the third hood 403 are movably connected by buckles and clips. In this embodiment, the second hood 402 and the third hood 403 are provided with guide plates 6, while the first hood 401 is not provided with guide plates 6, to ensure that the sheet material is cooled before being crushed by the guide plates 6.

[0032] Reference Figure 5 The guide plate 6 is an arc-shaped plate or a sloping plate. Both ends of the guide plate 6 are movably connected to the cooling shroud 4. Specifically, in this embodiment, at least two fixing rods are provided at both ends of the guide plate 8 and the fixing rods are bolted to the cooling shroud 4. A collision plate 8 is provided behind the guide plate 6. Both sides of the collision plate 8 are movably connected to the cooling shroud 4 and the collision plate 8 is set perpendicular to the conveying mechanism 3. Specifically, in this embodiment, the collision plate 8 is set vertically. Both ends of the collision plate 8 extend out of the cooling shroud 4. An L-shaped fixing piece is provided on the cooling shroud 4 at the position corresponding to the collision plate 8. One side of the L-shaped fixing piece is bolted to the collision plate 8 and the other side of the L-shaped fixing piece is connected to the cooling shroud 4.

[0033] The implementation principle is as follows: This application improves the cooling efficiency of the sheet material on the conveying mechanism 3 by setting a cooling hood 4 on the conveying mechanism 3; at the same time, a guide plate 6 is set inside the cooling hood 4. Since the guide plate 6 is set at an angle and the lower end of the guide plate 6 is connected to the conveying mechanism 3, the sheet material on the conveying mechanism 3 will fall back onto the conveying mechanism 3 after passing through the guide plate 6, breaking larger sheet materials, which is convenient for subsequent crushing mechanism to process and improve crushing efficiency. Meanwhile, a splash guard 7 is set above the crushing mechanism to avoid dust and fragments splashing, which is convenient for use.

[0034] 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 powder coating extrusion and pulverizing device, characterized in that: The extruder (1) is provided with a tablet pressing mechanism (2) below the output end of the extruder (1). A conveying mechanism (3) is provided below the tablet pressing mechanism (2) and tablets are conveyed on the conveying mechanism (3). A cooling hood (4) is provided on the conveying mechanism (3) and a fan coil unit (5) is provided on the cooling hood (4). A guide plate (6) is provided on the inner side of the cooling hood (4). The guide plate (6) is inclined and its lower end can connect with the conveying mechanism (3). The tablets on the conveying mechanism (3) can fall back onto the conveying mechanism (3) after passing through the guide plate (6). A crushing mechanism is provided below the end of the conveying mechanism (3), and a splash guard (7) is provided above the crushing mechanism.

2. The powder coating extrusion and pulverizing device according to claim 1, characterized in that: The tablet pressing mechanism (2) includes a mounting plate and a pressure roller (201) mounted on the mounting plate. The pressure rollers (201) are arranged in pairs. Multiple cooling channels are provided inside the pressure rollers (201) and the ends of the multiple cooling channels are connected. The cooling channels include radial channels (201a) and axial channels (201b) that are connected to each other. The cross-sections of the radial channels (201a) and axial channels (201b) are U-shaped.

3. The powder coating extrusion and pulverizing device according to claim 2, characterized in that: The radial channels (201a) are located at both ends of the pressure roller (201) and are uniformly arranged along the radial direction of the pressure roller (201). The axial channels (201b) are arranged close to the outer side of the pressure roller (201).

4. The powder coating extrusion and pulverizing device according to claim 2, characterized in that: The radial channel (201a) and the axial channel (201b) are cooling water channels or cooling air channels.

5. The powder coating extrusion and pulverizing device according to claim 1, characterized in that: There are multiple cooling hoods (4). The bottom of the cooling hood (4) is provided with a folded edge and is connected to the conveying mechanism (3) through the folded edge. The folded edge is provided with a fixing hole.

6. The powder coating extrusion and pulverizing device according to claim 1, characterized in that: The cooling shroud (4) includes a first shroud (401), a second shroud (402) and a third shroud (403) arranged in sequence. The first shroud (401) is connected to the tablet pressing mechanism (2). The ends of the first shroud (401), the second shroud (402) and the third shroud (403) are movably connected by buckles and snaps.

7. A powder coating extrusion and pulverizing device according to claim 6, characterized in that: The guide plate (6) is provided inside both the second wind hood (402) and the third wind hood (403).

8. The powder coating extrusion and pulverizing device according to claim 1, characterized in that: The air outlet of the fan coil unit (5) is inclined downward and faces the guide plate (6).

9. A powder coating extrusion and pulverizing device according to claim 1, characterized in that: The guide plate (6) is an arc-shaped plate or a sloping plate, and both ends of the guide plate (6) are movably connected to the cooling fan shroud (4).

10. A powder coating extrusion and pulverizing device according to claim 1, characterized in that: A collision plate (8) is provided behind the guide plate (6). The two sides of the collision plate (8) are movably connected to the cooling hood (4) and the collision plate (8) is set perpendicular to the conveying mechanism (3).

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