CN112108237B

CN112108237B - Powder coating particle control sieving equipment

Info

Publication number: CN112108237B
Application number: CN202010940534.8A
Authority: CN
Inventors: 夏连心; 方志望; 朱满子; 李时雨
Original assignee: Hunan Lianxin Technology Co Ltd
Current assignee: Hunan Lianxin Technology Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-12-21
Anticipated expiration: 2040-09-09
Also published as: CN112108237A

Abstract

The invention discloses sieving equipment for controlling powder coating particles, which belongs to the field of powder coating manufacturing, wherein a first cavity is arranged in a box body, a sieving mechanism for sieving powder coating is arranged in the first cavity, an impurity removing mechanism for removing the powder coating with fine particles is arranged at one discharging side of the sieving mechanism, and the impurity removing mechanism is connected with a dust removing mechanism; can carry out multistage screening and roll to coating and refine, reduce the condition of refining and screening many times, increase screening rate, set up the rotation of different speeds to the filter cylinder, make inside two-layer filter cylinder carry out the two-stage screening when quick rotation, both guarantee screening rate, can guarantee the screening quality again, blow the coating through the air pump that sets up and roll up the suspension with the sweeping piece that sets up, make coating can be more quick pass through filter cylinder and screen cloth, guarantee that coating has better effect when using.

Description

Powder coating particle control sieving equipment

Technical Field

The invention belongs to the field of powder coating manufacturing, and particularly relates to a sieving device for controlling powder coating particles.

Background

The particle size of the coating needs to be controlled during the manufacturing of the powder coating, and experiments show that when the particle size of the coating is 45 micrometers, the manufactured powder coating has good performance as a whole, meets the production and use requirements, and has good application prospects, so that when the powder coating is manufactured, the particle size of the coating needs to be controlled to be about 45 micrometers, and the coating with the too small particle size cannot obtain good effects when used, but influences the spraying.

At present, in order to control the size of the particle size, the coating needs to be screened and refined for many times, so that the coating is slow to manufacture, in the actual processing process, people only pay attention to the refining degree of the coating particles, and the coating with the excessively small particle size is usually ignored by people because the amount of the coating is small, so that the particle size control capability of the coating is small.

Disclosure of Invention

The invention aims to solve the problems and provide a sieving device for controlling powder coating particles, which can be used for synchronously carrying out particle refinement and multi-stage sieving on the coating and removing the coating particles with undersize particle sizes.

In order to realize the purpose, the invention adopts the technical scheme that: a sieving device for controlling powder coating particles comprises a box body, wherein a first cavity is arranged in the box body, a sieving mechanism for sieving the powder coating is arranged in the first cavity, an impurity removing mechanism for removing the powder coating with fine particles is arranged at one discharging side of the sieving mechanism, and the impurity removing mechanism is connected with a dust removing mechanism;

the screening mechanism comprises a plurality of layers of screening cylinders which are rotatably sleeved together, a first pipeline is arranged in the outermost screening cylinder, the first pipeline is connected with an air source and blows air into the screening cylinders, the rotating speed of the outermost screening cylinder is slower than that of the inner screening cylinder, the inner screening cylinders are eccentrically arranged, a fixed grinding block and a scraper blade are arranged in the innermost screening cylinder, and the grinding block grinds large-particle coatings finely when the innermost screening cylinder rotates;

the edulcoration mechanism include with the second cavity that first cavity is linked together, set up the screen cloth in the second cavity, the second cavity with the connector of filter screen section of thick bamboo department sets up out the hopper, pass through the pipe connection air supply on the side of going out the hopper to blow the coating in the second cavity, lie in the second cavity one side that goes out the hopper sets up the piece of sweeping that can curl up the suspension with powder coating, and the tiny particle coating that the suspension got up passes through the screen cloth is got rid of.

Further, dust removal mechanism still include with the closing cap that the filter bowl is connected, be provided with on the closing cap to the feeder hopper of carrying the material in the filter bowl, it sets up sealed piece to slide in the first cavity, it sets up the hollow shaft to slide on the sealed piece, rotate on the hollow shaft and set up and rotate the cover, rotate the cover with fixed connection between the closing cap, just the hollow shaft with rotate set up on set up with the through-hole of first pipeline intercommunication, the hollow shaft stretches into in the filter bowl, and with the center pivot axle of filter bowl rotates to be connected, grind the piece with the scraper blade is fixed to be set up on the hollow shaft.

Further, it sets up dwang and hand wheel to rotate on the sealed piece, the dwang with connect through the belt between the hand wheel, dwang internal thread connection threaded rod, the threaded rod with it is fixed mutually between the hollow shaft.

Furthermore, the rotating shafts of the screening cylinders on the outermost layer and the inner layer rotate mutually and are driven by a driving source arranged on the outer side surface of the box body through a gear transmission assembly respectively.

Further, edulcoration mechanism is including setting up the first flourishing magazine and the flourishing magazine of second cavity bottom, the fixed clearance board that sets up in the central axis of rotation of sweeping the piece, the clearance board with the surface contact of screen cloth, the central axis of rotation of sweeping the piece is gone up and is connected the driving source, set up the suction pump on the box, the entrance of suction pump with the screen cloth contacts, is located one side of the flourishing magazine of second the second cavity internal fixation sets up the attachment plate, the attachment plate with the export contact of suction pump.

Furthermore, the dust removal mechanism comprises a water tank arranged on the box body, a second pipeline communicated with the water tank is arranged in the second cavity, and a drying adsorption box is arranged on an exhaust pipeline of the water tank.

Furthermore, spiral protruding stripes are arranged inside the screening cylinder, and a cleaning brush is arranged on the surface, closest to the outermost layer, of the inner layer of the screening cylinder.

Further, a discharge opening is formed in the bottom wall of the first cavity.

The invention has the beneficial effects that: the invention provides a sieving device for controlling powder coating particles, which comprises a sieving device 1, wherein the sieving device can be used for carrying out multistage sieving and rolling refinement on a coating, more coatings with qualified particle sizes can be obtained during sieving, the conditions of repeated refining and sieving are reduced, the sieving speed is increased, different-speed rotation is arranged on sieving cylinders, so that two-stage sieving is carried out on the sieving cylinders with two inner layers during quick rotation, the sieving cylinder on the outermost side is easier to pass through the sieving cylinder with small meshes during slow rotation, the sieving speed is ensured, and the sieving quality can be ensured.

2. When screening coating, blow through the air pump that sets up and the piece that sweeps that sets up with coating curls up the suspension, makes coating can be faster through a screen cylinder and screen cloth, not only makes the coating granule of screening reach the particle diameter of needs, also can get rid of the coating granule of undersize, guarantees that coating has better effect when using.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic sectional view in the direction of a-a in fig. 1.

Fig. 3 is a partially enlarged structural diagram of a portion B in fig. 1.

The text labels in the figures are represented as: 10. a box body; 11. a first cavity; 12. a screening cylinder; 13. grinding blocks; 14. a squeegee; 15. a second cavity; 16. screening a screen; 17. a discharge hopper; 18. a sweeping sheet; 19. sealing the cover; 20. a feed hopper; 21. a sealing block; 22. a hollow shaft; 23. a first material containing box; 24. a second material containing box; 26. cleaning the plate; 27. a suction pump; 28. an attachment plate; 29. a water tank; 30. drying the adsorption box; 31. rotating the rod; 32. a hand wheel; 33. a threaded rod; 34. cleaning a brush; 35. a discharge outlet; a. a first conduit; b. a second conduit; c. raised stripes; d. a first gear; e. a second gear; f. a third gear; g. a fourth gear.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

As shown in fig. 1 to 3, the specific structure of the present invention is: a sieving device for controlling powder coating particles comprises a box body 10, wherein a first cavity 11 is arranged in the box body 10, a sieving mechanism for performing multi-stage sieving on the powder coating is arranged in the first cavity 11, an impurity removing mechanism for removing the powder coating with fine particles is arranged at one discharging side of the sieving mechanism, and the impurity removing mechanism is connected with a dust removing mechanism;

the screening mechanism comprises a plurality of layers of screening drums 12 which are mutually sleeved together and are rotatably arranged between the first cavity 11, specifically three layers, wherein a first pipeline a is arranged in the screening drum 12, the first pipeline a is connected with an air source, the air source is an air pump fixedly arranged at the top of the box body 10 and is communicated with the first pipeline a through a pipeline, the screening drum 12 and the inner layer are arranged on the outermost layer, a rotating speed difference exists between the screening drums 12, the two layers of the screening drums 12 are eccentrically arranged on the inner layer, a fixed grinding block 13 and a scraper 14 are arranged in the screening drum 12 on the innermost layer, the grinding block 13 and the scraper 14 can be in contact with the inner wall of the screening drum 12 on the innermost layer, when the screening drum 12 rotates, a gap between the grinding block 13 and the screening drum 12 thins large-particle coatings in the screening drum 12 when the gap is reduced, the scraper 14 scrapes off the paint adhered to the inner wall of the screening cylinder 12 when the screening cylinder rotates;

the impurity removing mechanism comprises a second cavity 15 communicated with the first cavity 11, the second cavity 15 is positioned at the lower side of the first cavity 11, a screen 16 is arranged in the second cavity 15, the aperture size of the screen 16 can pass through powder particles below 25 microns, a discharge hopper 17 is arranged at the connecting port of the second cavity 15 and the screen cylinder 12, the side edge of the discharge hopper 17 is connected with an air source through a pipeline, the air source connected with the discharge hopper is the same as the air source connected with the first pipeline a, a sweeping piece 18 is arranged at one side of the discharge hopper 17 in the second cavity 15, and the sweeping piece 18 can roll up the screened powder coating when rotating, so that the powder particles with smaller particle size are suspended in the air.

Preferably, as shown in fig. 1 and fig. 3 of the specification, the dust removing mechanism further includes a cover 19 connected to the screening cylinder 12, the cover 19 is slidable in the first cavity 11, wherein the outermost cover 19 is rotatably connected to the outermost screening cylinder 12, the two inner layers of covers 19 are slidably connected to the two inner layers of screening cylinders 12, the cover 19 can rotate with the two inner layers of screening cylinders 12 at the same speed, a feed hopper 20 for feeding the material into the screening cylinder 12 is disposed on the cover 19, a sealing block 21 is slidably disposed in the first cavity 11, a hollow shaft 22 is slidably disposed on the sealing block 21, the hollow shaft 22 is connected to an air pump disposed on the top of the box 10 through a pipeline, a rotating sleeve is rotatably disposed on the hollow shaft 22, the rotating sleeve is fixedly connected with the sealing cover 19, through holes communicated with the first pipeline a are arranged on the hollow shaft 22 and the rotating sleeve, an air pump at the top of the box body 10 enters the hollow shaft 22 through a pipeline, and is discharged from the first pipeline a through the through hole, the air generated by the air pump blows the coating in the screening cylinder 12 at the outermost side to roll up the coating, so that the coating can be conveniently leaked out through the screening cylinder 12 when the screening cylinder 12 rotates, so as to carry out screening, the hollow shaft 22 extends into the screening drum 12 and is rotatably connected with the central rotating shaft of the screening drum 12, the grinding block 13 and the scraper 14 are fixedly arranged on the hollow shaft 22, the grinding block 13 rolls the coating in the screening cylinder 12 when the screening cylinder 12 rotates, so that coating particles are refined, and the scraper 14 cleans the inner wall of the screening cylinder 12.

Preferably, as shown in the attached drawing 1 of the specification, the seal block 21 is rotated to set up the dwang 31 and the hand wheel 32, the dwang 31 with connect through the belt between the hand wheel 32, the threaded rod 33 of threaded connection in the dwang 31, the threaded rod 33 with reciprocal anchorage between the hollow shaft 22 can drive the dwang 31 to rotate through rotating the hand wheel 32, and the dwang 31 promotes the threaded rod 33 and moves when rotating to control the closing cap 19 and remove in first cavity 11, realize the action of sealing and opening the tip of a screen cylinder 12.

Preferably, as shown in fig. 1 of the specification, the rotation shafts of the outermost screening cylinder 12 and the inner screening cylinder 12 are mutually rotated and sleeved together, and are respectively driven by a driving source arranged on the outer side surface of the casing 10 through a gear transmission assembly, the driving source is a motor, the gear transmission assembly mainly comprises a first gear d and a second gear e fixedly arranged on the main shaft of the motor, a third gear f fixedly arranged on the rotation shaft of the outermost screening cylinder 12 and a fourth gear g fixedly arranged on the rotation shaft of the inner screening cylinder 12, wherein the second gear e is engaged with the fourth gear g, the first gear d is engaged with the third gear f, the diameter of the second gear e is twice the diameter of the fourth gear g, the diameter of the third gear f is twice the diameter of the first gear d, when the motor drives the first gear d, the second gear e, the third gear f and the fourth gear g to rotate, the rotation speed difference can be generated between the outermost screening cylinder 12 and the two-layer screening cylinder 12, the rotation speed of the two-layer screening cylinder 12 is high, the coating with large particles is quickly refined, the rotation speed of the screening cylinder 12 at the outer side is low, and the coating is convenient to pass through fine meshes.

Preferably, as shown in fig. 2 of the specification, the impurity removing mechanism includes a first material containing box 23 and a second material containing box 24 disposed at the bottom of the second cavity 15, the second material containing box 24 collects the paint with smaller particles passing through the screen 16, the first material containing box 23 collects the qualified paint, a cleaning plate 26 is fixedly disposed on the central rotating shaft of the sweeping blade 18, the cleaning plate 26 contacts with the surface of the screen 16, the cleaning plate 26 cleans the surface of the screen 16 during rotation to prevent the screen 16 from being easily blocked, a driving source is connected to the central rotating shaft of the sweeping blade 18, the driving source is a motor, a suction pump 27 is disposed on the box 10, an inlet of the suction pump 27 contacts with the screen 16, an attachment plate 28 is fixedly disposed in the second cavity 15 at one side of the second material containing box 24, the adhesion plate 28 is in contact with the outlet of the suction pump 27, and the suction pump 27 sucks the paint and causes the paint particles passing through the screen 16 to finally fall on the adhesion plate 28 to be settled and to fall into the second receiving box 24 to be collected when being started.

Preferably, as shown in fig. 1 of the specification, the dust removing mechanism includes a water tank 29 placed on the box body 10, a second pipeline b communicated with the water tank 29 is arranged in the second cavity 15, a drying and adsorbing box 30 is arranged on an exhaust pipeline of the water tank 29, and the air and the paint carried by the second pipeline b pass through a water bath in the water tank 29, so that the paint is settled in the water tank 29, and is dried, adsorbed and discharged into the air through the drying and adsorbing box 30.

Preferably, as shown in fig. 1 of the specification, a spiral convex stripe c is arranged inside the screen cylinder 12, the convex stripe c can ensure that the coating which cannot pass through the screen cylinder 12 is discharged when the screen cylinder 12 rotates, a cleaning brush 34 is arranged on the surface of the screen cylinder 12 in the middle, and the cleaning brush 34 rotates along with the screen cylinder 12 in the middle to clean the inner wall of the screen cylinder 12 at the outermost layer.

Preferably, as shown in fig. 1, a discharge opening 35 is formed in the bottom wall of the first cavity 11, and large particles of the coating material that cannot pass through the screen cylinder 12 are discharged through the discharge opening 35.

The specific use mode of the invention is as follows: firstly, paint is fed into a screening cylinder 12 through a feed hopper 20, a motor for driving the screening cylinder 12 to rotate is started, the motor has a speed difference between the outermost screening cylinder 12 and the two inner screening cylinders 12 through four gears of a first gear d, a second gear e, a third gear f and a fourth gear g, when the two inner screening cylinders 12 rotate rapidly, large-particle paint between the screening cylinders 12 and a grinding block 13 is ground and refined, when the screening cylinders 12 rotate, the inner walls of the screening cylinders 12 are scraped clean by a scraper 14, the first screening is carried out, the paint is screened for the second time through the middle screening cylinder 12, when the outermost screening cylinder 12 rotates slowly, the paint in the screening cylinder 12 can pass through the smaller screening cylinders 12, the third screening of the paint is realized, when a cleaning brush 34 rotates, the inner wall of the screen cylinder 12 at the outermost layer is cleaned,

starting an air pump fixedly arranged on the top surface of the box body 10, blowing air into the screening cylinders 12 by the air pump through the hollow shaft 22 and the first pipeline a to blow up the coating in the screening cylinder 12 at the outermost side, so that the coating cannot block the meshes of the screening cylinders 12, ensuring smoother screening,

the screened coating passes through the discharge hopper 17, the coating entering the discharge hopper 17 is blown up under the pushing of the air pump at the top of the box body 10, the motor connected on the sweeping piece 18 is started, the motor drives the sweeping piece 18 to rotate, the coating is rolled up and suspended in the air, the suction pump 27 is started, the suction pump 27 sucks the coating to be screened through the screen 16, the sucked coating is settled through the attachment plate 28 and falls into the second material containing box 24 to be collected, the qualified coating is collected in the first material containing box 23,

the gas sent into the second cavity 15 by the suction pump 27 enters the water tank 29 through the second pipeline b for water bath, so that the coating dust carried in the gas enters the water for sedimentation, the gas after the water bath is dried and adsorbed by the drying and adsorbing box 30 and then is discharged into the air,

after the coating in the screening cylinder 12 is screened, the hand wheel 32 is rotated, the hand wheel 32 drives the rotating rod 31 to rotate, the rotating rod 31 rotates to drive the threaded rod 33 to move, the hollow shaft 22 drives the sealing cover 19 to move and separate from the screening cylinder 12, the motor connected with the screening cylinder 12 is started reversely, the residual coating in the screening cylinder 12 is sent out and discharged from the discharge port 35,

after the material in the screen cylinder 12 is discharged, the handwheel 32 is rotated again, so that the hollow shaft 22 pushes the sealing cover 19 to match with the screen cylinder 12 for the next screening.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. A sieving device for controlling powder coating particles comprises a box body (10), wherein a first cavity (11) is formed in the box body (10), a sieving mechanism for sieving the powder coating is arranged in the first cavity (11), an impurity removing mechanism for removing the powder coating with fine particles is arranged on one discharging side of the sieving mechanism, and the impurity removing mechanism is connected with a dust removing mechanism;

the screening mechanism comprises a plurality of layers of screening cylinders (12) which are rotatably arranged and sleeved together, a first pipeline (a) is arranged in the outermost screening cylinder (12), the first pipeline (a) is connected with an air source and blows air into the screening cylinders (12), the rotating speed of the outermost screening cylinder (12) is slower than that of the inner screening cylinder (12), the screening cylinders (12) are eccentrically arranged, a fixed grinding block (13) and a scraper (14) are arranged in the innermost screening cylinder (12), and when the innermost screening cylinder (12) rotates, the grinding block (13) grinds large-particle coatings;

edulcoration mechanism include with second cavity (15) that first cavity (11) are linked together, set up screen cloth (16) in second cavity (15), second cavity (15) with the connector of screen cylinder (12) department sets up out hopper (17), pass through the pipe connection air supply on the side of going out hopper (17) to blow the coating in second cavity (15), lie in second cavity (15) one side of going out hopper (17) sets up sweeping piece (18) that can curl up the suspension with powder coating, and the tiny particle coating that the suspension got up passes through screen cloth (16) are got rid of.

2. A powder coating material granule controlled screening apparatus as claimed in claim 1, wherein: the dust removing mechanism also comprises a sealing cover (19) connected with the screening cylinder (12), a feed hopper (20) for conveying materials into the screening drum (12) is arranged on the sealing cover (19), a sealing block (21) is arranged in the first cavity (11) in a sliding manner, a hollow shaft (22) is arranged on the sealing block (21) in a sliding manner, a rotating sleeve is rotatably arranged on the hollow shaft (22) and is fixedly connected with the sealing cover (19), and the hollow shaft (22) and the rotating sleeve are provided with through holes communicated with the first pipeline (a), the gas conveyed by the gas source is sent out by the first pipeline (a) through the hollow shaft (22) and the rotating sleeve, the hollow shaft (22) extends into the screening cylinder (12), and is rotationally connected with a central rotating shaft of the screening cylinder (12), and the grinding block (13) and the scraping plate (14) are fixedly arranged on the hollow shaft (22).

3. A powder coating material granule controlled screening apparatus as claimed in claim 2, wherein: it sets up dwang (31) and hand wheel (32) to rotate on sealed piece (21), dwang (31) with through belt connection between hand wheel (32), dwang (31) female connection threaded rod (33), threaded rod (33) with it is fixed mutually between hollow shaft (22).

4. A powder coating material granule controlled screening apparatus as claimed in claim 1, wherein: the rotating shafts of the screening cylinder (12) on the outermost layer and the screening cylinder (12) on the inner layer rotate mutually and are driven by a driving source arranged on the outer side surface of the box body (10) through a gear transmission assembly respectively.

5. A powder coating material granule controlled screening apparatus as claimed in claim 1, wherein: impurity removal mechanism is including setting up first flourishing magazine (23) and second flourishing magazine (24) of second cavity (15) bottom, the fixed cleaning plate (26) that sets up in the center axis of rotation of sweeping piece (18), cleaning plate (26) with the surface contact of screen cloth (16), the drive source is connected in the center axis of rotation of sweeping piece (18), set up suction pump (27) on box (10), suction pump (27) the entrance with screen cloth (16) contact, are located one side of second flourishing magazine (24) the second cavity (15) internal fixation sets up attachment plate (28), attachment plate (28) with the export contact of suction pump (27).

6. A powder coating material granule controlled screening apparatus as claimed in claim 1, wherein: the dust removal mechanism comprises a water tank (29) placed on the box body (10), a second pipeline (b) communicated with the water tank (29) is arranged in the second cavity (15), and a drying adsorption box (30) is arranged on an exhaust pipeline of the water tank (29).

7. A powder coating material granule controlled screening apparatus as claimed in claim 1, wherein: spiral protruding stripes (c) are arranged inside the screening drum (12), when the screening drum (12) rotates, the coating is sent out by the protruding stripes (c), and a cleaning brush (34) is arranged on the surface, closest to the outermost layer, of the inner layer of the screening drum (12) and on the surface of the screening drum (12).

8. A powder coating material granule controlled screening apparatus as claimed in claim 1, wherein: a discharge opening (35) is arranged on the bottom wall of the first cavity (11).