Pearlescent pigment surface treatment and screening integrated device

Abstract

The utility model relates to the technical field of pigment production, and discloses a pearlescent pigment surface treatment and screening integrated device which comprises a conveying pipe, a filter cartridge and an induced draft fan which are sequentially connected, a filter assembly is arranged in the filter cartridge, and a second heating assembly is arranged at the position, close to the filter assembly, of the filter cartridge. In the application, the second heating assembly is arranged at the position corresponding to the filtering assembly, so that the pearlescent pigment attached to the filtering assembly can be heated, the amount of an organic solvent on the surface of the pearlescent pigment is reduced, the pearlescent pigment is not easy to agglomerate, and the phenomenon that the pearlescent pigment is easy to agglomerate to block the filtering assembly is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of pigment production, in particular to a pearlescent pigment surface treatment and screening integrated device. Background Art

[0002] Pearlescent pigment powder is an effect pigment formed by uniformly depositing nano-metal oxides on the surface of a transparent flaky substrate, such as mica, flaky glass flakes, silica, alumina, etc. In order to better adapt to various application systems, it is often necessary to perform organic surface treatment on the pearlescent surface to improve its dispersibility in the system; the common method of organic surface treatment of powder is to spray the surface treatment agent on the powder surface under high-speed stirring, and then dry and air flow crush. However, due to the unique structural characteristics of pearlescent pigments, it is easy to cause the product to lose its pearlescent luster under high shear and high-energy crushing. Under the condition of ensuring the pearlescent luster, how to uniformly surface and screen the powder surface is very critical.

[0003] At present, in the process of pearlescent pigment powder screening and classification, centrifugal force, gravity, inertial force, mesh aperture and other methods are generally used to classify and screen the powder. When gravity is used to screen the powder, the powder is mainly screened by an airflow classifier. However, when screening pearlescent pigments coated with organic solvents, the surface absorbs liquid and easily agglomerates, and is easily adsorbed on the filter bag in the filter cartridge connected to the negative pressure pump, resulting in blockage. At the same time, the volatile gas generated by the organic solvent is not easy to be discharged, which leads to manufacturing accidents. Summary of the invention

[0004] In view of this, the purpose of the utility model is to provide an integrated device for organic surface treatment and screening of pearlescent pigments, so that it can solve the problem that when a low-boiling point organic solvent mixture mixed with a surface treatment agent is coated on the surface of a powder, the powder easily absorbs the liquid and causes the powder to agglomerate, resulting in the inability to uniformly and effectively carry out organic surface treatment on the powder surface, and the filter bag in the filter cartridge is easily blocked, resulting in the volatile organic solvent being unable to be discharged in time, thereby posing a safety hazard.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] A pearlescent pigment surface treatment and screening integrated device comprises a transport pipe, a filter cartridge and an induced draft fan which are connected in sequence, wherein a filter assembly is arranged in the filter cartridge, and a second heating assembly is arranged near the filter assembly on the filter cartridge.

[0007] In the present application, a second heating component is arranged at the position corresponding to the filter component, which can heat the pearlescent pigment attached to the filter component, reduce the amount of organic solvent absorbed by the surface of the pearlescent pigment, make the pearlescent pigment less likely to agglomerate, and optimize the phenomenon that the pearlescent pigment is easy to agglomerate and clog the filter component.

[0008] According to a preferred embodiment, a negative pressure sheet is provided on the top of the filter cartridge, a negative pressure cavity is provided in the negative pressure sheet, the negative pressure cavity is connected to the induced draft fan, the filter assembly includes a plurality of filter blocks vertically connected to the negative pressure sheet, a filter cavity connected to the negative pressure cavity is provided in the filter block, and filter mesh holes connected to the filter cavity are provided on the surface of the filter block.

[0009] In the present application, the filtration area of ​​the filter assembly is increased by providing multiple rows of filter blocks, thereby reducing the possibility of filtration failure caused by clogging of some filter meshes by pearlescent pigments, thereby improving the filtration performance of the filter assembly.

[0010] According to a preferred embodiment, the second heating assembly comprises a plurality of heating plates, the heating plates are spaced apart from the filter block, and the size of the heating plates matches the filter block.

[0011] In the present application, heating plates are provided on both sides of the filter block in the thickness direction, which can continuously heat the filter holes, reduce the amount of organic solvent attached to the surface of the pearlescent pigment, and make it difficult for the pearlescent pigment to clump and adhere to the filter block.

[0012] According to a preferred embodiment, the second heating assembly includes a plurality of heating rods, a plurality of slide grooves are provided at the bottom of the negative pressure sheet, the heating rods are slidably connected to the slide grooves, the cross-section of the slide grooves is T-shaped, and the heating rods are provided on both sides of the filter block in the thickness direction.

[0013] According to a preferred embodiment, the second heating assembly further comprises a driving assembly for driving the heating rod to slide along the slide groove.

[0014] In the present application, in order to prevent the second heating component from continuously heating the filter block and causing heat accumulation on the filter plate, the present application provides a heating rod that can move back and forth along the slide groove, and intermittently heats different positions on the surface of the filter block by reciprocating heating, thereby increasing the volatilization amount of organic solvent on the surface of the pearlescent pigment without igniting the organic solvent.

[0015] According to a preferred embodiment, the drive assembly includes a main drive shaft, multiple auxiliary drive shafts, a mounting frame and a motor, the mounting frame is arranged at both ends of the slide groove, the auxiliary drive shaft is rotatably connected to the mounting frame, the auxiliary drive shaft is screwed to the heating rod, a first bevel gear is arranged at the end of the auxiliary drive shaft, the main drive shaft is arranged at one end close to the first bevel gear, a plurality of second bevel gears meshing with the first bevel gear are arranged on the circumference of the main drive shaft, and one end of the main drive shaft is transmission-connected to the output shaft of the motor.

[0016] In the present application, the rotation of the main drive shaft can drive the rotation of each auxiliary drive shaft, thereby driving the heating rod to slide back and forth along the slide groove. The structure is simple and the number of drive sources required is small.

[0017] According to a preferred embodiment, a first heating component for heating is arranged in the transport pipe.

[0018] According to a preferred embodiment, the first heating assembly includes a plurality of heating rings, the heating rings are evenly distributed along the length direction of the transport pipe, and the heating rings are embedded in the inner wall of the transport pipe.

[0019] In the present application, a plurality of heating rings are arranged on the inner wall of the transport tube, so as to heat the pearlescent pigment during the transport process and prevent the pearlescent pigment from aggregating and adhering to the surface of the filter block.

[0020] According to a preferred embodiment, a collecting tank is provided at the bottom of the filter cartridge.

[0021] Beneficial effects of the utility model:

[0022] 1. In the present application, a second heating component is provided at the position corresponding to the filter component, which can heat the pearlescent pigment attached to the filter component, reduce the amount of organic solvent on the surface of the pearlescent pigment, make the pearlescent pigment less likely to agglomerate, and optimize the phenomenon that the pearlescent pigment is easy to agglomerate and clog the filter component.

[0023] 2. In the present application, the filtration area of ​​the filter assembly is increased by providing multiple rows of filter blocks, thereby reducing the possibility of filtration failure caused by clogging of some filter meshes by pearlescent pigments, thereby increasing the filtration performance of the filter assembly.

[0024] 3. In the present application, in order to prevent the second heating component from continuously heating the filter block and causing heat accumulation on the filter plate, the present application provides a heating rod that can move back and forth along the slide groove, and intermittently heats different positions on the surface of the filter block by reciprocating heating, thereby increasing the volatilization amount of organic solvent on the surface of the pearlescent pigment without igniting the organic solvent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of the overall structure of the utility model from the first viewing angle;

[0026] Figure 2 This utility model Figure 1 A magnified schematic diagram of part A;

[0027] Figure 3 This is a schematic diagram of the structure of the heating rod of the utility model from a second viewing angle;

[0028] Figure 4 This utility model Figure 3A magnified schematic diagram of part B;

[0029] in,

[0030] 1. Filter cartridge; 2. Transport pipe; 3. induced draft fan; 4. Filter assembly; 41. Filter block; 42. Filter chamber; 5. First heating assembly; 51. Heating ring; 6. Second heating assembly; 61. Heating plate; 62. Heating rod; 63. Slide; 64. Main drive shaft; 65. Auxiliary drive shaft; 66. Mounting bracket; 67. First bevel gear; 68. Second bevel gear; 7. Negative pressure plate; 71. Negative pressure chamber; 8. Collection tank; 9. Air hammer. DETAILED DESCRIPTION

[0031] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0032] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] like Figure 1-4 As shown, the present application provides an integrated device for surface treatment and screening of pearlescent pigments. The device comprises a transport pipe 2, a filter cartridge 1 and an induced draft fan 3 which are connected in sequence. A filter assembly 4 is arranged in the filter cartridge 1. The gas flow direction is transport pipe 2-filter cartridge 1-induced draft fan 3. When the airflow drives the pearlescent pigment to be transported into the filter cartridge 1, the pearlescent pigment will be filtered by the filter assembly 4 and remain at the bottom of the filter cartridge 1. A second heating assembly 6 is arranged in the filter cartridge 1 near the filter assembly 4. The second heating assembly 6 can heat the filter assembly 4. The induced draft fan 3 and the filter cartridge 1 are connected by an air duct.

[0034] Specifically, the top of the filter cartridge 1 is covered, and a negative pressure sheet 7 is provided at the top of the filter cartridge 1. A negative pressure cavity is provided in the negative pressure sheet 7, and the negative pressure cavity is connected to the induced draft fan 3. The filter assembly 4 includes a plurality of filter blocks 41 vertically connected to the negative pressure sheet 7. A filter cavity 42 connected to the negative pressure cavity 71 is provided in the filter block 41. A filter mesh connected to the filter cavity 42 is provided on the surface of the filter block 41. The filter block 41 can also be called a filter bag in actual use.

[0035] According to a preferred embodiment, Figure 3 The second heating assembly 6 includes a plurality of heating plates 61. The heating plates 61 are spaced apart from the filter block 41. In this way, the heating plates 61 can continuously heat the filter block 41, thereby reducing the amount of organic solvent attached to the surface of the pearlescent pigment, so that the pearlescent pigment is not easy to agglomerate and adhere to the filter block.

[0036] According to another preferred embodiment, Figure 4 , the second heating assembly 6 includes a plurality of heating rods 62. A plurality of chutes 63 are provided at the bottom of the negative pressure sheet 7, and the heating rods 62 are slidably connected to the chutes 63. The heating rods 62 can move along the chutes 63 to different positions relative to the filter block 41 to heat the filter block 41. The cross section of the chutes 63 is T-shaped. Preferably, the cross section of the chutes can also be a cone or the like that can prevent the heating rods 62 from falling out of the chutes 63. The heating rods 62 are arranged on both sides of the filter block 41 in the thickness direction.

[0037] The device also includes a driving assembly for driving the heating rod 62 to slide along the slide 63. The driving assembly includes a main drive shaft 64, a plurality of auxiliary drive shafts 65, a mounting frame 66 and a motor. The mounting frame 66 is arranged at both ends of the slide 63. The auxiliary drive shaft 65 is rotatably connected to the mounting frame 66, the auxiliary drive shaft 65 is screwed to the heating rod 62, and a first bevel gear 67 is arranged at the end of the auxiliary drive shaft 65. The main drive shaft 64 is arranged at one end close to the first bevel gear 67, and a plurality of second bevel gears 68 meshing with the first bevel gear 67 are arranged on the circumference of the main drive shaft 64. One end of the main drive shaft 64 is transmission-connected to the output shaft of the motor.

[0038] Preferably, the motor is a servo motor, which can drive the main drive shaft 64 and the auxiliary drive shaft 65 to rotate clockwise or counterclockwise, thereby driving the heating rod 62 to reciprocate. During the reciprocating movement of the heating rod, different positions of the filter block 41 can be intermittently heated, while increasing the amount of organic solvent volatilization on the surface of the pearlescent pigment, without igniting the organic solvent, to prevent the pearlescent pigment from agglomerating and clogging the filter mesh. It is worth noting that a mounting bracket 66 is also connected to the main drive shaft 64. The main drive shaft 64 is rotatably connected to the mounting bracket 66. In order to prevent the main drive shaft 64 or the auxiliary drive shaft 65 from sliding relative to the mounting bracket 66, in the present application, a snap ring can be provided on the peripheral side where the main drive shaft 64 or the auxiliary drive shaft 65 is connected to the mounting bracket 66, and a corresponding snap hole for the snap ring to engage is provided in the mounting bracket 66. Of course, in actual use, the heating time of the heating rod can also be controlled by intermittent power supply.

[0039] A first heating assembly 5 for heating the pearlescent pigment during transportation is provided in the transport tube 2. The first heating assembly includes a plurality of heating rings 51. The heating rings 51 are evenly distributed along the length direction of the transport tube 2. The heating rings 51 are embedded in the inner wall of the transport tube 2. When the pearlescent pigment passes through the heating rings 51, it can be heated by the heating rings 51 and is not easy to aggregate.

[0040] Preferably, the heating ring 51 is a constant temperature heating ring, which can heat the pearlescent pigment flowing through the transport pipe 2 by water bath heating or electric heating.

[0041] A collecting tank 8 is provided at the bottom of the filter cartridge 1. The pearlescent pigment separated by the filter block 41 can fall into the collecting tank 8 and be collected.

[0042] Preferably, the filter cartridge 1 is provided with an air hammer 9. The air hammer 9 can knock the filter cartridge 1 to drive the filter cartridge 1 to vibrate, thereby vibrating the pearlescent pigment attached to the filter block 41 off, further preventing the pearlescent pigment from clogging the filter block 41.

[0043] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A pearlescent pigment surface treatment and screening integrated device, characterized in that: The invention comprises a transport pipe (2), a filter cartridge (1) and an induced draft fan (3) which are connected in sequence, wherein a filter assembly (4) is arranged in the filter cartridge (1), and a second heating assembly (6) is arranged in the filter cartridge (1) near the filter assembly (4); a negative pressure sheet (7) is arranged at the top of the filter cartridge (1), a negative pressure chamber (71) is arranged in the negative pressure sheet (7), and the negative pressure chamber (71) is connected to the induced draft fan (3); the filter assembly (4) comprises a plurality of filter blocks (41) vertically connected to the negative pressure sheet (7), a filter chamber (42) connected to the negative pressure chamber (71) is arranged in the filter block (41), and a filter mesh connected to the filter chamber (42) is arranged on the surface of the filter block (41).

2. The device according to claim 1, characterized in that The second heating assembly (6) comprises a plurality of heating plates (61), wherein the heating plates (61) are arranged at intervals from the filter block (41), and the size of the heating plates (61) matches the setting of the filter block (41).

3. The device according to claim 1, characterized in that The second heating component (6) comprises a plurality of heating rods (62), a plurality of slide grooves (63) are arranged at the bottom of the negative pressure sheet (7), the heating rods (62) are slidably connected to the slide grooves (63), the cross section of the slide grooves (63) is T-shaped, the heating rods (62) are arranged on both sides of the filter block (41) in the thickness direction, and the device further comprises a driving component for driving the heating rods (62) to slide along the slide grooves (63).

4. The device according to claim 3, characterized in that The driving assembly comprises a main driving shaft (64), a plurality of auxiliary driving shafts (65), a mounting frame (66) and a motor, wherein the mounting frame (66) is arranged at both ends of the slide groove (63), the auxiliary driving shaft (65) is rotatably connected to the mounting frame (66), the auxiliary driving shaft (65) is threadedly connected to the heating rod (62), a first bevel gear (67) is arranged at the end of the auxiliary driving shaft (65), the main driving shaft (64) is arranged at one end close to the first bevel gear (67), a plurality of second bevel gears (68) meshed with the first bevel gear (67) are arranged on the circumferential side of the main driving shaft (64), and one end of the main driving shaft (64) is transmission-connected to the output shaft of the motor.

5. The device according to claim 1, characterized in that A first heating component (5) for heating is arranged in the transport pipe (2).

6. The device according to claim 5, characterized in that The first heating component (5) comprises a plurality of heating rings (51), the heating rings (51) being evenly distributed along the length direction of the transport pipe (2), and the heating rings (51) being embedded in the inner wall of the transport pipe (2).

7. The device according to claim 1, characterized in that A collecting tank (8) is provided at the bottom of the filter cartridge (1).

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