Sieving device for insulating powder coating

Abstract

The screening device for the insulating powder coating comprises an obliquely-arranged supporting frame, the bottom of the supporting frame is rotationally connected with a base, the top of the supporting frame is connected with the base through an elastic mechanism, and a vibration device is further arranged at the top of the supporting frame; a plurality of layers of screening mechanisms inclined in the same direction as the supporting frame are arranged on the top of the supporting frame, the tops of the impeller feeders are arranged below the material containing device, and powder coating contained in the material containing device is conveyed into the screening mechanisms through the impeller feeders through all the material falling pipes to be screened. When the powder coating screening device is used, the arranged impeller feeding machine can evenly convey powder coating downwards in a quantitative mode, the discharging amount of powder is matched with the screening amount of all the screens, a large amount of powder coating is prevented from falling down at the same time, the powder flow is prevented from exceeding the screening limit of the screens, the screens are always in the optimal screening state, and the screening efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration screening, and particularly to a sieving device for insulating powder coatings. Background Art

[0002] Insulating powder coatings are powder coatings specifically used for electrical insulation and have excellent electrical insulation properties. They are usually composed of resins, curing agents, pigments, fillers, and additives, etc., are made by the melt extrusion mixing method, and are coated by methods such as fluidized bed dipping. When producing powder coatings, it is necessary to sieve the powder. Sieving can remove too large or too small particles, ensure the uniformity and consistency of the coating particle size, thereby achieving good coating dispersibility and coating tightness. Because only particles with appropriate particle sizes can be evenly distributed in the coating to form a stable structural form, thereby ensuring the adhesion and durability of the coating. And sieving can remove impurities and materials of different colors in the particles, reduce the color difference and hanging rate of the coating, and improve the quality and stability of the entire coating.

[0003] Existing powder screening mechanisms cannot control the powder flow rate entering the sieve during screening. When the powder flow rate exceeds the limit that the sieve can screen, the sieve cannot perform effective screening. Moreover, the current screening devices are inefficient because most of the sieves in the screening devices are only one layer. For this reason, we propose a sieving device for insulating powder coatings. Summary of the Invention

[0004] The present invention provides a sieving device for insulating powder coatings, which has the advantages of avoiding sieve blockage and high screening efficiency, and solves the problems raised in the above background art.

[0005] The technical solution of the present invention is realized as follows: A sieving device for insulating powder coatings includes a support frame arranged obliquely. The bottom of the support frame is rotatably connected to a base, and an elastic mechanism is connected between the top of the support frame and the base. A vibration device is also provided at the top of the support frame; Multiple layers of screening mechanisms inclined in the same direction as the support frame are provided at the top of the support frame; The tops of the screening mechanisms are arranged in a stepped manner, and elastic bellows are respectively installed at the tops of each screening mechanism. The top of the elastic bellows is connected to a blanking pipe, and the tops of the blanking pipes are respectively connected to the bottom of an impeller feeder; The top of the impeller feeder is arranged below a material storage device, and the powder coating stored in the material storage device is transported to the screening mechanism through each blanking pipe by the impeller feeder for screening.

[0006] Preferably, the elastic mechanism includes a plurality of support springs symmetrically installed below the top of the support frame. The bottom of the support springs is respectively arranged on supports, and the supports are fixed to the base.

[0007] Preferably, the vibration device includes a mounting platform installed on the top of the support frame, and at least one vibration motor is installed on the mounting platform.

[0008] Preferably, the material storage device includes a material storage box arranged above the top of the screening mechanism. Both sides of the material storage box are connected to the base through brackets respectively. A conical hopper is provided at the bottom of the material storage box, and the top of the impeller feeder is connected to the lower end of the conical hopper.

[0009] Preferably, each screening mechanism includes a strip-shaped support frame inclined in the same direction as the support frame. An inlet hood is installed on the top of each strip-shaped support frame, and elastic bellows are respectively installed on the top of the inlet hoods; a filter screen is provided in each strip-shaped support frame. The side of the inlet hood facing the filter screen is open. An aggregate channel is provided at the bottom of each strip-shaped support frame. A sealing cover is installed on the strip-shaped support frame between the aggregate channel and the inlet hood. Both ends of the sealing cover are respectively communicated with the aggregate channel and the inlet hood; a conical equalizing bin is provided at the bottom of each strip-shaped support frame. An equalizing chute inclined downward is provided at the bottom of the conical equalizing bin. An outlet is provided at the bottom of the equalizing chute; both sides of the multi-layer strip-shaped support frames are connected through at least two fixing frames respectively, and the bottoms of the fixing frames are connected to the support frame respectively.

[0010] Preferably, each outlet is connected to the first conveying pipeline, and a first outlet is provided at the bottom of the first conveying pipeline.

[0011] Preferably, the bottom of each aggregate channel is connected to the second conveying pipeline, and a second outlet is provided at the bottom of the second conveying pipeline.

[0012] Preferably, both ends of the elastic bellows are detachably connected to the inlet hood and the bottom of the blanking pipe through flanges respectively.

[0013] Compared with the prior art, when the present invention is in use, the provided impeller feeder can evenly and quantitatively convey the powder coating downward. The powder discharge amount matches the screening amount of each sieve mesh, avoiding the simultaneous falling of a large amount of powder coating, preventing the powder flow from exceeding the screening limit of the sieve mesh, and always keeping the sieve mesh in the best screening state. Moreover, the sieve meshes of each layer can screen the powder coating falling from the blanking pipe. The powder particles remaining on the sieve mesh all fall into the aggregate channel and flow into the second conveying pipeline to fall centrally, while the screened powder coating will all be concentrated in the first conveying pipeline to fall, which is convenient for collection and has high screening efficiency. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 Structural schematic of the present invention Figure 1 。

[0016] Figure 2 Structural schematic of the present invention Figure 2 。

[0017] Figure 3 Structural schematic of the present invention Figure 3 。

[0018] Figure 4 Front view of the present invention.

[0019] In the figure: 1, base; 2, first outlet; 3, support frame; 4, first conveying pipeline; 5, support; 6, second outlet; 7, second conveying pipeline; 8, aggregate channel; 9, sealing cover; 10, feed hood; 11, equalizing trough; 12, conical hopper; 13, material storage box; 14, support; 15, impeller feeder; 16, blanking pipe; 17, discharge port; 18, elastic corrugated pipe; 19, strip-shaped support frame; 20, fixing frame; 21, conical equalizing bin; 22, vibration motor; 23, installation platform; 24, support spring. Detailed implementation manners

[0020] The following will clearly and completely describe the technical solutions of the present invention in combination with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] Referring to Figures 1 to 4 , the present invention provides a technical solution: a sieving device for insulating powder coatings, which is actually a vibrating screen, specifically including a support frame 3 arranged obliquely, and the inclination angle of the support frame 3 is about 30°. The bottom of the support frame 3 is rotatably connected to the base 1. Specifically, at least two hinge seats are installed at the bottom of the support frame 3 (such as Figure 1 the position indicated by arrow A in

[0022] During use, the top of the support frame 3 also needs to be supported, that is, the top of the support frame 3 is connected to the base 1 through an elastic mechanism. The elastic mechanism includes a plurality of support springs 24 symmetrically installed below the top of the support frame 3. The bottom parts of the support springs 24 are respectively arranged on the supports 5, and the supports 5 are fixed to the base 1. During the actual installation process, both ends of the support spring 24 are respectively arranged within spring supports (such as Figure 2 the position indicated by arrow B in

[0023] ). The upper spring support is arranged below the top of the support frame 3, while the lower spring support is arranged on the top of the support 5. Through the fixation of the spring supports, the support spring 24 can be kept stable all the time;

[0024] Next, a vibration device is also provided on the top of the support frame 3. The vibration device includes a mounting platform 23 installed on the top of the support frame 3, and at least one vibration motor 22 is installed on the mounting platform 23. When there are two vibration motors 22, they need to be symmetrically installed on the mounting platform 23 so that the vibration motors can provide symmetric vibration forces to the top of the support frame 3 during operation;

[0025] Therefore, when the vibrating screen proposed in this application is working, when the vibration motor 22 starts, it will generate vibration. The vibration motor 22 drives the top of the support frame 3 to vibrate, while the bottom of the support frame 3 realizes a slight rotation through a rotating structure, so that the entire support frame 3 generates a vibration effect.

[0025] Furthermore, based on the vibration effect of the above-mentioned support frame, a multi-layer screening mechanism that is inclined in the same direction as the support frame 3 is provided on the top of the support frame 3. As Figure 1 and Figure 3 shown, each screening mechanism includes a strip-shaped support frame 19 that is inclined in the same direction as the support frame 3. The strip-shaped support frame 19 can be parallel to the support frame 3 or can be set to be inclined by about 30°. A feed hood 10 is installed on the top of each strip-shaped support frame 19;

[0026] As Figure 1 and Figure 3 shown, it is necessary to fix the strip-shaped support frames 19 of each layer to the support frame 3. Therefore, both sides of the multi-layer strip-shaped support frames 19 are connected by at least two fixing frames 20 respectively. The bottom parts of the fixing frames 20 are respectively connected to the support frame 3. In this way, the strip-shaped support frame 19 can be stably located above the support frame 3 through the support of the fixing frames 20, so that the strip-shaped support frame 19 can vibrate along with the vibration of the support frame 3;

[0027] As Figure 3As shown, filters are provided in each strip-shaped support frame 19, and the side of the feed hood 10 facing the filter is open. Aggregate channels 8 are respectively provided at the bottom of each strip-shaped support frame 19. A sealing cover 9 is installed on the strip-shaped support frame 19 between the aggregate channel 8 and the feed hood 10. Both ends of the sealing cover 9 communicate with the aggregate channel 8 and the feed hood 10 respectively. In this way, a sealed housing is formed at the top of the support frame 3, which can ensure that no dust leakage occurs when the powder passes through the sieve mesh;

[0028] Conical equalizing bins 21 are respectively provided at the bottom of each strip-shaped support frame 19. Inclined downward equalizing troughs 11 are respectively provided at the bottoms of the conical equalizing bins 21, and discharge ports 17 are provided at the bottoms of the equalizing troughs 11. In order to more conveniently collect the screened powder coatings, each discharge port 17 is connected to the first conveying pipe 4, and a first outlet 2 is provided at the bottom of the first conveying pipe 4. In order to more conveniently collect the particles remaining on the sieve surface, each aggregate channel 8 is connected to the second conveying pipe 7 at the bottom, and a second outlet 6 is provided at the bottom of the second conveying pipe 7.

[0029] As Figure 2 shown, the tops of the screening mechanisms are arranged in a stepped manner, and elastic bellows 18 are respectively installed on the tops of the screening mechanisms. Specifically, the elastic bellows 18 are installed on the top of the feed hood 10, and the top of the elastic bellows 18 is connected to the blanking pipe 16, and the tops of the blanking pipes 16 are respectively connected to the bottom of the impeller feeder 15;

[0030] The top of the impeller feeder 15 is arranged below the material storage device. The material storage device includes a material storage box 13 arranged above the top of the screening mechanism. Both sides of the material storage box 13 are respectively connected to the base 1 through brackets 14. A conical hopper 12 is provided at the bottom of the material storage box 13, and the top of the impeller feeder 15 is connected to the lower end of the conical hopper 12.

[0031] During actual use, the powder material is lifted into the material storage device by a hoist for storage. The powder coatings stored in the material storage device are conveyed into the screening mechanism through the impeller feeder 15 via the respective blanking pipes 16. The provided impeller feeder 15 can evenly and quantitatively convey the powder coatings downward, and the powder discharge amount matches the screening amount of each sieve mesh, avoiding the simultaneous falling of a large amount of powder coatings and preventing the powder flow from exceeding the screening limit of the sieve mesh;

[0032] When the powder coatings fall into the feed hood 10, the powder coatings in the feed hood 10 will fall onto the sieve meshes in the strip-shaped support frames 19. The strip-shaped support frames 19 vibrate together with the support frame 3, so each layer of sieve mesh can screen the powder coatings falling from the blanking pipe 16;

[0033] Subsequently, all the powder particles remaining on the sieve mesh fall into the aggregate channel 8 and flow into the second conveying pipeline 7 for centralized falling, while the screened powder coating will all be concentrated in the first conveying pipeline 4 for falling, which is convenient for collection and has high screening efficiency.

[0034] Finally, it should be emphasized that the elastic bellows 18 provided will undergo slight up-and-down telescoping for a long time, so the elastic bellows 18 can be said to be a vulnerable part. Here, the elastic bellows 18 needs to be convenient to replace. During installation, the two ends of the elastic bellows 18 are respectively detachably connected to the feeding cover body 10 and the bottom of the blanking pipe 16 through flanges.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A screening device for insulating powder coating, characterized in that: It comprises an inclined support frame (3), the bottom of the support frame (3) is rotatably connected to the base (1), the top of the support frame (3) is connected to the base (1) via an elastic mechanism, and a vibration device is also provided on the top of the support frame (3); A multi-layer screening mechanism is provided on the top of the supporting frame (3) and is inclined in the same direction as the supporting frame (3); The tops of the screening mechanisms are arranged in steps, and an elastic bellows (18) is installed on the top of each screening mechanism, the top of the elastic bellows (18) is connected to the drop pipe (16), and the top of the drop pipe (16) is connected to the bottom of the impeller feeder (15). The top of the impeller feeder (15) is arranged below the material containing device, and the powder coating contained in the material containing device is transported by the impeller feeder (15) through various drop pipes (16) to the screening mechanism for screening.

2. The sieving device for insulating powder coating according to claim 1, characterized in that: The elastic mechanism comprises a plurality of support springs (24) symmetrically mounted below the top of the support frame (3); the bottoms of the support springs (24) are respectively arranged on supports (5); and the supports (5) are fixed to the base (1).

3. The sieving device for insulating powder coating according to claim 2, characterized in that: The vibration device comprises a mounting platform (23) mounted on the top of a supporting frame (3), and at least one vibration motor (22) is mounted on the mounting platform (23).

4. The sieving device for insulating powder coating according to claim 1, characterized in that: The material holding device comprises a material holding box (13) arranged above the top of the screening mechanism, the two sides of the material holding box (13) are respectively connected to the base (1) through brackets (14), a conical bucket (12) is arranged at the bottom of the material holding box (13), and the top of the impeller feeder (15) is connected to the lower end of the conical bucket (12).

5. The sieving device for insulating powder coating according to claim 1, characterized in that: Each screening mechanism comprises a strip support frame (19) inclined in the same direction as the support frame (3), a feed cover (10) is installed on the top of each strip support frame (19), and an elastic bellows (18) is installed on the top of the feed cover (10); A filter screen is provided in each strip support frame (19); the side of the feed cover (10) facing the filter screen is open; a material collection channel (8) is provided at the bottom of each strip support frame (19); a sealing cover (9) is installed on the strip support frame (19) between the material collection channel (8) and the feed cover (10); and two ends of the sealing cover (9) are respectively connected to the material collection channel (8) and the feed cover (10); A conical material storage bin (21) is provided at the bottom of each strip-shaped support frame (19), a downwardly inclined material storage trough (11) is provided at the bottom of each conical material storage bin (21), and a material discharge port (17) is provided at the bottom of each material storage trough (11); Both sides of the multi-layer strip-shaped support frame (19) are connected via at least two fixing frames (20), and the bottoms of the fixing frames (20) are connected to the support frame (3).

6. The sieving device for insulating powder coating according to claim 5, characterized in that: Each discharge port (17) is connected to the first conveying pipeline (4), and a first outlet (2) is provided at the bottom of the first conveying pipeline (4).

7. The sieving device for insulating powder coating according to claim 6, characterized in that: The bottom of each material collecting channel (8) is connected to the second conveying pipeline (7), and the bottom of the second conveying pipeline (7) is provided with a second outlet (6).

8. The sieving device for insulating powder coating according to claim 5, characterized in that: The two ends of the elastic bellows (18) are detachably connected to the feed cover (10) and the bottom of the drop pipe (16) through flanges.

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