Screening machine for powder coating

Abstract

The utility model discloses a screening machine for powder coating. The screening machine comprises a machine body, a blanking hopper, a distributing device, a self-cleaning mechanism, a screen, a vibration motor, a guide hopper, a material receiving box, a recycled material discharging pipe and a recycling box. The self-cleaning mechanism is arranged to clean the screen, and the recycling box is arranged to recycle the powder coating which does not pass through screening, so that the powder coating which does not pass through screening is prevented from being accumulated and even blocked on the screen; the inclined screen is arranged, so that the powder coating can be conveniently screened while sliding on the screen; the distributing device is arranged to uniformly distribute and spread the powder coating on the screen mesh for screening, so that the powder coating is prevented from being accumulated and even blocked on the screen mesh; and the vibrating motor is arranged to vibrate the screen, so that the screening process is accelerated, and sufficient screening is facilitated. The powder coating screening device solves the problem that a screen is prone to being accumulated and blocked, and meanwhile powder coating is fully screened.

Description

Technical Field

[0001] This utility model relates to the field of powder coating processing technology, specifically to a sieving machine for powder coatings. Background Technology

[0002] Powder coatings are solid powdered synthetic resin coatings composed of solid resins, pigments, fillers, and additives. Their dispersion medium is not solvent or water, but air; because no solvent is used, they are called powder coatings. They are characterized by solvent-free production, 100% film formation, low energy consumption, high efficiency, resource conservation, and environmental friendliness.

[0003] For example, Chinese invention patent CN218360602U, published on January 24, 2023, discloses a rapid powder coating screening machine, including a housing. A material spreading mechanism is located at the top of the housing, a screen is horizontally installed in the middle of the housing, and an anti-lifting component is located at the bottom of the housing. An inlet pipe is connected to the axis at the top of the housing, and an outlet pipe is connected to the axis at the bottom of the housing. The outlet pipe has a valve inside. This invention, through the anti-lifting component, can adjust the vertical distance between the screen and the guide hood, thereby reducing the risk of powder coating being lifted, making the powder coating more concentrated, and reducing pollution to the working environment. Furthermore, the material spreading mechanism enables the screening machine to uniformly distribute the powder coating onto the surface of the screen, thereby improving the screening efficiency and making the screening process faster.

[0004] As can be seen from the above patents, although the screening machine achieves uniform feeding and anti-spillage functions, the horizontal screen will retain unscreened powder coatings and cause accumulation or even blockage, affecting the screening process. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a sieving machine for powder coatings.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A powder coating screening machine includes a machine body with a hopper located on the upper right side of the top of the machine body. From top to bottom, the machine body contains a material distributor, a screen, a self-cleaning mechanism, a guide hopper, and a receiving box. The self-cleaning mechanism is located below the screen and includes a drive component, a rotating ring, and a rotating brush. The drive component is located below the bottom of the screen, and the rotating ring is embedded in the side of the drive component near the middle of the screen. One end of the rotating brush is rotatably connected to the rotating ring, and the rotating brush is arranged parallel to the screen.

[0008] Preferably, the center of the rotating brush is a solid shaft, and several layers of brushes are evenly and symmetrically distributed at equal intervals along the axial direction of the solid shaft. Several brush bristles are evenly and symmetrically distributed at equal angles along the circumferential direction of the solid shaft on each layer of brushes, and the brush bristles are in close contact with the screen.

[0009] Preferably, the screen is inclined at an angle of 20-40° to the horizontal direction.

[0010] Preferably, the screening machine further includes a vibrating motor disposed below the top of the screen.

[0011] Preferably, the material distributor is connected to the bottom of the hopper and is positioned above the screen.

[0012] Preferably, a recycling discharge pipe is provided on the outer wall of the machine body at the intersection with the edge of the screen, and a recycling box is provided directly below the recycling discharge pipe.

[0013] Preferably, the center of the fabric feeder is located at a higher top position near the screen.

[0014] The beneficial effects of this utility model are:

[0015] A self-cleaning mechanism is installed to clean the screen, and a recycling bin is installed to collect unscreened powder coatings, preventing them from accumulating or clogging the screen. An inclined screen is installed to facilitate the sliding of powder coatings while screening. A distributor is installed to evenly distribute the powder coatings on the screen for screening, preventing accumulation or clogging. A vibrating motor is installed to vibrate the screen, accelerating the screening process and ensuring thorough screening. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] Figure 1This is a schematic diagram of the structure of a sieving machine for powder coatings proposed in this utility model;

[0019] Figure 1 As shown: 1. Machine body, 2. Feed hopper, 3. Material distributor, 4. Screen, 5. Self-cleaning mechanism, 51. Drive component, 52. Rotating ring, 53. Rotating brush, 6. Guide hopper, 7. Collection box, 8. Vibrating motor, 9. Recycled material discharge pipe, 10. Recycling box. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0023] It should be noted that similar labels and letters are likely to represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Reference Figure 1 This utility model discloses a powder coating screening machine, including a machine body 1. From the top to the bottom of the machine body 1, a feeding hopper 2, a distributor 3, a screen 4, a self-cleaning mechanism 5, a vibrating motor 8, a guide hopper 6, and a receiving box 7 are arranged in sequence. The feeding hopper 2 is used to feed material into the machine body 1. The distributor 3 connected below the feeding hopper 2 evenly distributes the powder coating in the feeding hopper 2 onto the screen 4 to prevent the powder coating from accumulating or even blocking on the screen 4. The screen 4 is inclined at an angle of 20-40° to the horizontal direction, which facilitates the powder coating to slide from high to low on the screen 4 under its own gravity, and at the same time, it is screened on the screen 4. The vibrating motor 8, located below the top of the screen 4, is used to vibrate the screen 4 and accelerate the screening process of the powder coating on the screen 4 to facilitate thorough screening. The guide hopper 6 guides the powder coating that has passed through the screen 4 into the receiving box 7 below. A recycling discharge pipe 9 is provided on the outer wall of the machine body 1 at the intersection with the edge of the screen 4 to guide the powder coating that has not passed through the screen 4 into the recycling box 10 below for recycling.

[0027] The self-cleaning mechanism 5, located below the screen 4, is used to automatically clean the screen 4. The self-cleaning mechanism 5 includes a drive component 51, a rotating ring 52, and a rotating brush 53. The drive component 51, located below the bottom of the screen 4, drives the self-cleaning mechanism 5 to reciprocate mechanically along the direction perpendicular to the downward flow of the powder coating. The rotating ring 52 is embedded in the side of the drive component 51 near the middle of the screen 4. One end of the rotating brush 53, which is parallel to the screen 4, is rotatably connected to the rotating ring 52. The rotating ring 52 rotates, thereby driving the rotating brush 53 to rotate simultaneously, so that the rotating brush rotates at the bottom of the screen 4.

[0028] In an optional embodiment, the center of the rotating brush 53 is a solid shaft, and several layers of brushes are evenly and symmetrically distributed along the axial direction of the solid shaft. On each layer of brushes, several bristles are evenly and symmetrically distributed at equal angles along the circumferential direction of the solid shaft. The bristles are in close contact with the screen 4. While the rotating brush 53 rotates at the bottom of the screen 4, the bristles that are in close contact with the screen 4 can brush and scrape the screen holes at the bottom of the screen 4 to clean the powder on the screen and prevent unscreened powder coating from accumulating or even clogging the screen.

[0029] In an optional embodiment, the center of the distributor 3 is located near the top of the screen 4, which allows the powder coating falling from the distributor 3 onto the screen 4 to slide a longer distance and for a longer time on the screen, thus facilitating thorough sieving of the powder coating on the screen 4.

[0030] Of course, the embodiments described in this specific implementation are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A powder coating screening machine, comprising a machine body (1), wherein a hopper (2) is provided on the upper right side of the top of the machine body (1), and a feeder (3), a screen (4), a self-cleaning mechanism (5), a guide hopper (6), and a receiving box (7) are arranged sequentially from top to bottom inside the machine body (1), characterized in that: The self-cleaning mechanism (5) is located below the screen (4). The self-cleaning mechanism (5) includes a drive member (51), a rotating ring (52), and a rotating brush (53). The drive member (51) is located below the bottom end of the screen (4). The rotating ring (52) is embedded in the side of the drive member (51) near the middle of the screen (4). One end of the rotating brush (53) is rotatably connected to the rotating ring (52). The rotating brush (53) is arranged parallel to the screen (4).

2. The sieving machine for powder coatings according to claim 1, characterized in that: The center of the rotating brush (53) is a solid shaft, and several layers of brushes are evenly and symmetrically distributed along the axial direction of the solid shaft. Several brush bristles are evenly and symmetrically distributed at equal angles along the circumferential direction of the solid shaft on each layer of brushes. The brush bristles are in close contact with the screen (4).

3. A sieving machine for powder coatings according to claim 1, characterized in that: The screen (4) is inclined at an angle of 20-40° to the horizontal direction.

4. A sieving machine for powder coatings according to claim 1, characterized in that: The screening machine also includes a vibrating motor (8) located below the top of the screen (4).

5. A sieving machine for powder coatings according to claim 1, characterized in that: The feeder (3) is connected to the bottom of the hopper (2) and is positioned above the screen (4).

6. A sieving machine for powder coatings according to claim 1, characterized in that: A recycling discharge pipe (9) is provided on the outer wall of the machine body (1) at the intersection with the edge of the screen (4), and a recycling box (10) is provided directly below the recycling discharge pipe (9).

7. A sieving machine for powder coatings according to claim 2, characterized in that: The center of the fabric feeder (3) is located at a higher top position near the screen (4).

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