CN113546724B

CN113546724B - High-performance paint grinding device and process

Info

Publication number: CN113546724B
Application number: CN202110851160.7A
Authority: CN
Inventors: 李莉; 陈志越
Original assignee: Guangdong Caigle Technology Co ltd
Current assignee: Guangdong Caigle Technology Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-08-26
Anticipated expiration: 2041-07-27
Also published as: CN113546724A

Abstract

The invention discloses a high-performance paint grinding device and a process, wherein a grinding roller is positioned in a groove of an arc-shaped grinding groove, a material collecting hopper is positioned at one side of the arc-shaped grinding groove, and the top of one side of an accelerating tube is communicated with a material port at the bottom of the material collecting hopper; the inner ring is fixed in the middle part of cylindric box, and on the grit collided the board was fixed in the inner ring, the grit collided the board and was the downward sloping form and set up in the exit near the accelerating tube, and the quantity of annular filter screen was two and was located the inner ring both sides respectively, and the driven shaft rotates to be connected in cylindric box and be fixed in the center department of carousel, and the carousel is located annular filter screen inner circle, and one side of annular filter screen is equipped with return air mechanism, and return air mechanism is connected with the secondary and grinds the mechanism. The grinding method of the high-performance coating grinding device is matched with the high-performance coating grinding device for use, so that the grinding of raw materials is more comprehensive, the grinding efficiency is greatly improved, the grinding is more uniform, and the coating quality can be effectively improved.

Description

High-performance paint grinding device and process

Technical Field

The invention relates to the technical field of paint grinding, in particular to a high-performance paint grinding device and a grinding process of the high-performance paint grinding device.

Background

The powder coating is a solid powder synthetic resin coating composed of solid resin, pigment, filler, auxiliary agent and the like. Unlike conventional solvent-based coatings and water-based coatings, the dispersion medium is not a solvent and water, but air. It has the characteristics of no solvent pollution, 100 percent film forming and low energy consumption. The powder coating is in a completely different form from a general coating, and exists in a state of fine powder. Since no solvent is used, it is called a powder coating. The powder coating is mainly characterized in that: has the characteristics of harmlessness, high efficiency, resource saving and environmental protection.

Powder coating need grind into the fine particle to the granule raw materials that adds in process of production to guarantee the high-quality of coating, current traditional grinding equipment relies on the abrasive disc to grind more simply, because its grinding area is limited, leads to the grinding inefficiency, and its grinding effect is inhomogeneous, influences the coating quality, for this reason, provides a high performance coating grinder and technology.

Disclosure of Invention

The invention aims to provide a high-performance paint grinding device and a high-performance paint grinding process, and aims to solve the problems that the traditional grinding equipment provided by the background art mostly simply depends on a grinding disc for grinding, the grinding efficiency is low due to limited grinding area, the grinding effect is uneven, and the quality of paint is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a high performance paint grinder assembly, comprising:

the device comprises an acceleration mechanism, a grinding mechanism and a grinding mechanism, wherein the acceleration mechanism comprises an acceleration box body, an arc-shaped grinding groove, a grinding roller, a material collecting hopper and an acceleration pipe, the arc-shaped grinding groove is positioned at the upper part of an inner cavity of the acceleration box body, the grinding roller is positioned in the arc-shaped grinding groove, the material collecting hopper is positioned at one side of the arc-shaped grinding groove, and the top of one side of the acceleration pipe is communicated with a material port at the bottom of the material collecting hopper;

collision mechanism, collision mechanism includes cylindric box, inner ring, ring filter, grit collision board, driven shaft and carousel, the inner ring is fixed in the middle part of cylindric box, the grit collision board is fixed in on the inner ring, the grit collision board is downward slope form and sets up in the exit near the accelerating tube, the quantity of ring filter is two and is located the inner ring both sides respectively, the driven shaft rotates and connects in the cylindric box and be fixed in the center department of carousel, the carousel is located the ring filter inner circle, one side of ring filter is equipped with return air mechanism, return air mechanism is connected with the secondary grinding mechanism.

As a further preferred aspect of the present invention: the circular filter box is characterized in that filter material cavities are respectively arranged on two sides of an inner ring in the circular filter box, two circular filter screens are respectively arranged in the filter material cavities, a second discharge port communicated with the two filter material cavities is fixed at the bottom of the circular filter box, one end of a driven shaft extends to the outer side of the circular filter box and is fixedly connected with a first belt pulley, protruding blades are uniformly fixed on the outer side of a rotary disc in a ring shape, a first brush is uniformly fixed on the lateral side of the rotary disc, an arc-shaped guide pipe communicated with the inner cavity of the circular filter screen is fixed on one side of the circular filter screen, the inner cavity of the arc-shaped guide pipe is rotatably connected with a driving shaft through a bearing, plate-shaped blades are uniformly arranged on the outer side of the driving shaft, one end of the driving shaft extends to the outer side of the arc-shaped guide pipe and is fixed with a second belt pulley, and the second belt pulley is connected with the first belt pulley through a belt;

a first motor is fixed on the outer side of the acceleration box body, and an output shaft of the first motor is fixedly connected with one end of the grinding roller;

an air pump is fixed in the acceleration box body, an air outlet end of the air pump is communicated with an air nozzle fixedly inserted into the acceleration tube, and an air inlet end of the air pump is communicated with an air return pipe;

a first sand and stone grinding layer is fixed on the inner wall of the accelerating tube, and a guide plate is fixed at the discharge port of the collecting hopper in the accelerating tube;

the air return mechanism includes buffer tank, dust screen and deep bead, a port of arc passage feeds through in one side top of buffer tank, the top opposite side and the return air pipe of buffer tank are linked together, the dust screen sets up in the mouth of pipe department that the return air pipe inserted in the buffer tank inner chamber, the deep bead sets up under the ejection of compact mouth of pipe of arc passage, the buffer tank bottom is equipped with the third bin outlet, the bottom of buffer tank is fixed with third screw conveyer, one side of third screw conveyer is fixed with fourth screw conveyer, third screw conveyer's feed inlet and third bin outlet are linked together, third screw conveyer's discharge gate and fourth screw conveyer's feed inlet are linked together, fourth screw conveyer's discharge gate and feeder hopper are linked together.

As a further preferred aspect of the present invention: the secondary grinding mechanism comprises a grinding mechanism A, the grinding mechanism A comprises a grinding box, a support and a feeding pipe, the support is fixed at the top of the grinding box, a second motor is fixed at the top of the support, a first gear is fixed on an output shaft of the second motor, a support column inserted into an inner cavity of the grinding box is fixed at the bottom of the support, a first grinding disc is fixed at the bottom end of the support column, the top of the grinding box is rotatably connected with a rotary drum movably sleeved outside the support column through a bearing, a first outer gear meshed and connected with the first gear is fixed at the upper part of the rotary drum, first grinding plates are uniformly fixed on the peripheral wall of the outer side of the rotary drum, a feeding hole is formed in the top of each first grinding plate, an outer sleeve sleeved outside the first grinding disc is fixed at the outer side end of each first grinding plate, and the feeding pipe is communicated with a third discharging hole, and a gate valve is arranged on the feeding pipe.

As a further preferred aspect of the present invention: a conical filter screen is fixed on the inner wall of the grinding box below the first grinding disc, a bearing seat is fixed at the bottom of the outer sleeve, the bearing seat is rotatably connected with a roller brush through a bearing, a conical gear is fixed at one end of the roller brush, a conical gear ring in meshed connection with the conical gear is fixed on the inner wall of the grinding box, and a filter material outlet is formed in the bottom of the conical filter screen;

grind incasement wall and be located taper filter screen below and be fixed with toper guide cover, toper guide cover top is equipped with the cover mouth that the cover was established in the filter material export outside, the outside of cover mouth is fixed with annular spout, annular spout' S outside sliding connection has annular slide rail, annular slide rail is fixed with the activity and alternates the S type bracing piece in cover mouth and filter material export crack space, the top ball of S type bracing piece connects there is the spin, one side activity of spin inserts in the tip axle center department of roller brush, the outside of S type bracing piece is fixed with the scraper blade of contradicting in the toper guide cover outside, one side of grinding case is located the scraper blade top and is equipped with the bin outlet.

As a further preferred aspect of the present invention: the outer sleeve inner wall is located first abrasive disc below and is fixed with a supporting beam, a supporting beam's central part is fixed with the pivot, toper guide cover bottom is fixed with bottom confined barrel, be equipped with a plurality of second abrasive disc down in proper order from last in the barrel, the avris of second abrasive disc is equipped with the bracing piece that is fixed in the barrel inner wall, the pivot is inserted in the barrel and is moved about in proper order and run through in the center department of second abrasive disc, the top conflict of second abrasive disc is connected with and is fixed in the epaxial second grinding sheet piece of commentaries on classics, the barrel inner wall evenly is fixed with the funnel that lies in second abrasive disc below respectively, the bottom of barrel is equipped with the fourth bin outlet.

As further preferable in the present technical solution: fourth bin outlet below is equipped with first screw conveyer, one side of first screw conveyer is fixed with second screw conveyer, first screw conveyer's feed inlet and fourth bin outlet are linked together, first screw conveyer's discharge gate and second screw conveyer's feed inlet are linked together, second screw conveyer's discharge gate and feeder hopper are linked together.

As further preferable in the present technical solution: the secondary grinds mechanism is including grinding mechanism B, it includes both ends confined tube-shape outer container and both ends confined tube-shape inner box to grind mechanism B, the tube-shape inner box rotates the inner chamber of connecting in the tube-shape outer container through the mode that the activity was embedded into in the annular channel of setting at tube-shape outer container inner wall, the fixed intercommunication in top of tube-shape outer container has the pan feeding interface, the bottom of tube-shape outer container is equipped with fifth bin outlet, be equipped with the arc filter screen in the fifth bin outlet, the outside of tube-shape inner box evenly is fixed with the second brush, the top of tube-shape outer container is fixed with the third motor, the output shaft of third motor is fixed with the second gear, the outside of tube-shape inner box is fixed with the second outer gear ring of being connected with the second gear meshing.

As further preferable in the present technical solution: the incasement is fixed with netted inner tube in the tube-shape, the avris of case is netted setting in the tube-shape, spherical chamber has evenly been seted up in the netted inner tube, oval-shaped ball mill has been placed in the activity of spherical chamber, the inner wall in spherical chamber is equipped with second grit grinding layer, the through-hole that is linked together with spherical chamber is evenly seted up to the inside wall of netted inner tube.

As further preferable in the present technical solution: an interlayer cavity is arranged between the net-shaped inner cylinder and the cylindrical inner box, and grinding balls are movably placed in the interlayer cavity.

In addition, the invention also provides a process of the high-performance paint grinding device, which comprises the following steps:

s1, putting the powdery paint raw materials into a feed hopper, then starting a first motor to drive a grinding roller to rotate, enabling the raw materials in the feed hopper to enter an arc-shaped grinding groove through a first discharge port, grinding the raw materials by the grinding roller, enabling the ground raw materials to enter an accelerating tube, accelerating the raw materials entering the accelerating tube by high-pressure gas sprayed by an air pump and then spraying the raw materials outwards, enabling the sprayed raw materials to collide on a sandstone collision plate, enabling the raw materials to be more finely ground by vibration and friction force generated by collision, then filtering the raw materials by an annular filter screen, and discharging the filtered qualified raw materials from a second discharge port; unqualified raw material particles are conveyed into the buffer tank through the arc material guide pipe, and the gas flows back to the gas pump through the air return pipe to perform circular blowing;

s2, the raw material entering the buffer tank flows back to the feed hopper again through the third screw conveyor and the fourth screw conveyor, and the grinding step in the S1 is circulated;

s3, when secondary grinding is needed, stopping the third screw conveyor and the fourth screw conveyor, and selecting one of the grinding mechanism A or the grinding mechanism B to be connected with the third discharge port;

s4, when the grinding mechanism A is selected, the feeding pipe is connected with the third discharge port to be conducted, raw materials fall onto the first grinding disc, the first grinding plate is driven by the second motor to rotate and grind, the ground raw materials fall onto the conical filter screen to be screened, unqualified raw material particles screened out fall onto the second grinding disc to be ground again, and the ground raw materials are discharged through the fourth discharge port; re-conveying the material discharged from the fourth discharge port into the feed hopper through the first screw conveyor and the second screw conveyor, and circulating the grinding steps of S1, S2 and S3;

when the grinding mechanism B is selected, the feeding interface is in butt joint with the third discharge port to be conducted, the third motor is started to drive the cylindrical inner box to rotate, raw materials enter the cylindrical outer box through the feeding interface and then fall into the spherical cavity from surface holes of the cylindrical inner box and the mesh inner cylinder, the elliptical grinding balls are driven to overturn along with the rotation of the cylindrical inner box to grind the raw materials in the spherical cavity, and the ground raw materials are filtered by the arc-shaped filter screen and then discharged from the fifth discharge port; and re-conveying the material discharged from the fifth discharge opening into the feed hopper through the first screw conveyor and the second screw conveyor, and circulating the grinding steps S1, S2 and S3.

Compared with the prior art, the invention has the beneficial effects that:

1. the high-performance paint grinding device is used for carrying out primary grinding through a grinding roller, then, raw materials are led into an accelerating tube to be accelerated and then are sprayed out from the orifice of the accelerating tube and collide on a sand stone collision plate, the raw materials are ground into fine particles under the influence of friction and vibration force when colliding, blown air flow blows a protruding blade to drive a rotary table to rotate, a first brush arranged on the side of the rotary table brushes and sweeps powdery raw materials, so that an annular filter screen can rapidly filter the materials without being blocked, meanwhile, the filtered raw materials with larger particles are swept into an arc-shaped material guide tube, and are conveyed to a feed hopper again through a third spiral conveyor and a fourth spiral conveyor to be thrown again for grinding, and circular grinding is formed until the particle size meets the requirement;

2. the high-performance coating grinding device can be freely combined and matched for use, the grinding mechanism A and the grinding mechanism B can be conveniently selected to be butted with the air return mechanism according to product requirements, or the grinding mechanism A and the grinding mechanism B are not adopted to be used independently, so that the device is wide in applicability;

3. when the grinding mechanism A is selected, the high-performance paint grinding device carries out multi-stage grinding by the first grinding disc and the second grinding disc, improves the grinding efficiency, and can keep the high filtering material performance of the cone-shaped filter screen through the self-rotating roller brush;

4. when the grinding mechanism B is selected, the rotating cylindrical inner box drives the elliptical grinding balls to roll in the spherical cavity, so that raw materials in the spherical cavity can be repeatedly ground, and the grinding balls are arranged for auxiliary grinding, so that the grinding effect is better, and the grinding efficiency is improved;

5. the method of the high-performance coating grinding device is matched with the high-performance coating grinding device for use, so that the grinding of raw materials is more comprehensive, the grinding efficiency is greatly improved, the grinding is more uniform, and the coating quality can be effectively improved.

Drawings

FIG. 1 is a schematic diagram of a high performance paint grinder of the present invention;

FIG. 2 is a schematic cross-sectional view of the high performance paint grinder of the present invention;

FIG. 3 is a schematic view of the structure of an acceleration box of the high-performance paint grinder of the present invention;

FIG. 4 is a schematic view of the collision mechanism of the high performance paint grinder of the present invention;

FIG. 5 is a side cross-sectional structural view of the impact mechanism of the high performance paint grinder assembly of the present invention;

FIG. 6 is a schematic structural diagram of a grinding mechanism A of the high performance paint grinding apparatus of the present invention;

FIG. 7 is a schematic view of a first polishing pad configuration of the high performance paint polishing apparatus of the present invention;

FIG. 8 is a schematic view of the barrel structure of the high performance paint grinder of the present invention;

FIG. 9 is an enlarged view of the area A of FIG. 6 illustrating the high-performance paint polishing apparatus according to the present invention;

FIG. 10 is an enlarged view of the high performance paint grinder of the present invention, shown in FIG. 6 and designated by the reference numeral C;

FIG. 11 is a side cross-sectional structural view of a grinding mechanism B of the high performance paint grinding apparatus of the present invention;

FIG. 12 is a schematic cross-sectional front view of a grinding mechanism B of the high performance paint grinder of the present invention;

fig. 13 is an enlarged schematic view of a region B in fig. 12 of the high performance paint grinder of the present invention.

In the figure:

1. a feed hopper; 101. a first discharge port;

2. an acceleration mechanism; 201. an acceleration box body; 202. an arc-shaped grinding groove; 203. a grinding roller; 204. a collection hopper; 205. an accelerating tube; 206. an air pump; 207. an air nozzle; 208. a return air duct; 209. a baffle; 210. a first sand-stone grinding layer; 211. a first motor;

3. a collision mechanism; 301. a cylindrical box body; 302. an inner ring; 303. an annular filter screen; 304. a sandstone impact plate; 305. a driven shaft; 306. a turntable; 307. a raised blade; 308. an arc-shaped material guide pipe; 309. a second discharge opening; 310. a drive shaft; 311. a plate-shaped blade; 312. a filter material cavity; 313. a first brush; 314. a first pulley; 315. a second pulley;

4. an air return mechanism; 401. a buffer tank; 402. a dust screen; 403. a wind deflector; 404. a third discharge outlet;

5. a grinding mechanism A; 501. grinding a box; 502. a support; 503. a feeding pipe; 504. a gate valve; 505. a support pillar; 506. a first abrasive disk; 507. a rotating drum; 508. a first external gear; 509. a second motor; 510. a first gear; 511. a first abrasive sheet; 512. an outer sleeve; 513. a cone-shaped filter screen; 514. roller brushing; 515. a conical toothed ring; 516. a bearing seat; 517. a feeding hole; 518. a bevel gear; 519. a filter material outlet; 520. a conical material guide cover; 521. sleeving a nozzle; 522. an annular chute; 523. an annular slide rail; 524. an S-shaped support rod; 525. rolling a ball; 526. a squeegee; 527. a discharge outlet; 528. a support beam; 529. a rotating shaft; 530. a barrel; 531. a support bar; 532. a second abrasive disk; 533. a second abrasive sheet; 534. a funnel; 535. a fourth discharge outlet;

6. a grinding mechanism B; 601. a cylindrical outer case; 602. a cylindrical inner case; 603. a second brush; 604. a mesh inner cylinder; 605. a feeding port; 606. a second outer gear ring; 607. a third motor; 608. a second gear; 609. an interlayer cavity; 610. grinding balls; 611. an arc-shaped filter screen; 612. a fifth discharge outlet; 613. a spherical cavity; 614. a second sand-stone grinding layer; 615. an elliptical grinding ball; 616. a through hole;

7. a first screw conveyor;

8. a second screw conveyor;

9. a third screw conveyor;

10. a fourth screw conveyor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a technical solution: a high performance paint grinder assembly, comprising: an accelerating mechanism 2 for accelerating the paint raw material and a collision mechanism 3 for colliding the raw material;

the accelerating mechanism 2 comprises an accelerating box body 201, an arc-shaped grinding groove 202, a grinding roller 203, a material collecting hopper 204 and an accelerating tube 205, the material collecting hopper 1 is fixed at the top of one side of the accelerating box body 201, the outlet of a first material discharging port 101 of the material collecting hopper is arranged at one side of the notch of the arc-shaped grinding groove 202, the arc-shaped grinding groove 202 is positioned at the upper part of the inner cavity of the accelerating box body 201, a heat-conducting hollow copper plate used for supporting the arc-shaped grinding groove 202 is arranged at the bottom of the arc-shaped grinding groove 202, flowing cold water is injected into the inner cavity of the heat-conducting hollow copper plate and used for cooling the arc-shaped grinding groove 202, and the phenomenon that the temperature is too high during long-time use is avoided; the grinding roller 203 is positioned in the groove of the arc-shaped grinding groove 202, the collecting hopper 204 is positioned at one side of the arc-shaped grinding groove 202, when the grinding roller 203 rotates at a high speed, the ground raw materials are thrown outwards, the thrown raw materials fall into the collecting hopper 204, and the collecting hopper 204 is used for guiding the raw materials into the accelerating tube 205; the top of one side of the accelerating tube 205 is communicated with a bottom material port of the aggregate bin 204;

the collision mechanism 3 comprises a cylindrical box body 301, an inner ring 302, an annular filter screen 303, a sand collision plate 304, a driven shaft 305 and a rotary disc 306, wherein the inner ring 302 is fixed in the middle of the cylindrical box body 301, the sand collision plate 304 is fixed on the inner ring 302, the sand collision plate 304 is arranged at an outlet close to the accelerating tube 205 in a downward inclined manner, the number of the annular filter screens 303 is two and is respectively positioned at two sides of the inner ring 302, the driven shaft 305 is rotatably connected in the cylindrical box body 301 and is fixed at the center of the rotary disc 306, the rotary disc 306 is positioned in the inner ring of the annular filter screen 303, and one side of the annular filter screen 303 is provided with a return air mechanism 4.

Two sides of the inner ring 302 in the cylindrical box 301 are respectively provided with a filter material cavity 312, two annular filter screens 303 are respectively located in the filter material cavity 312, the bottom of the cylindrical box 301 is fixed with a second discharge port 309 communicated with the two filter material cavities 312, one end of the driven shaft 305 extends to the outer side of the cylindrical box 301 and is fixedly connected with a first belt pulley 314, the outer side of the turntable 306 is uniformly fixed with convex blades 307 in an annular shape, the edge side of the turntable 306 is uniformly fixed with a first brush 313, one side of the annular filter screens 303 is fixed with an arc-shaped material guide pipe 308 communicated with the inner cavity thereof, the inner cavity of the arc-shaped material guide pipe 308 is rotatably connected with a driving shaft 310 through a bearing, the outer side of the driving shaft 310 is uniformly provided with plate-shaped blades 311, one end of the driving shaft 310 extends to the outer side of the arc-shaped material guide pipe 308 and is fixed with a second belt pulley 315, and the second belt pulley 315 is connected with the first belt pulley 314 through a belt;

a first motor 211 is fixed on the outer side of the acceleration box 201, and an output shaft of the first motor 211 is fixedly connected with one end of the grinding roller 203;

an air pump 206 is fixed in the acceleration box body 201, an air outlet end of the air pump 206 is communicated with an air nozzle 207 fixedly inserted into the acceleration tube 205, and an air inlet end of the air pump 206 is communicated with an air return tube 208;

a first sand grinding layer 210 is fixed on the inner wall of the accelerating tube 205, and a guide plate 209 is fixed at the discharge port of the aggregate bin 204 in the accelerating tube 205; the guide plate 209 is used for guiding the air flow and forming a certain slow flow region, so that the raw materials can smoothly enter the accelerating tube 205, and the phenomenon that the raw materials flow backwards is avoided. The first sand polishing layer 210 can be freely configured, and after the first sand polishing layer 210 is used, the material will rub against the first sand polishing layer 210 during the acceleration process of the material injection, so as to achieve a certain polishing effect.

The air return mechanism 4 comprises a buffer tank 401, a dust screen 402 and a wind shield 403, a port of the arc-shaped guide pipe 308 is communicated with the top of one side of the buffer tank 401, the other side of the top of the buffer tank 401 is communicated with the wind return pipe 208, the dust screen 402 is arranged at the pipe orifice of the wind return pipe 208 inserted into the inner cavity of the buffer tank 401, the wind shield 403 is arranged under the discharge pipe orifice of the arc-shaped guide pipe 308, the bottom of the buffer tank 401 is provided with a third discharge port 404, the bottom of the buffer tank 401 is fixed with a third screw conveyor 9, one side of the third screw conveyor 9 is fixed with a fourth screw conveyor 10, the feed port of the third screw conveyor 9 is communicated with the third discharge port 404, the discharge port of the third screw conveyor 9 is communicated with the feed port of the fourth screw conveyor 10, and the discharge port of the fourth screw conveyor 10 is communicated with the feed hopper 1.

By adopting the scheme, the principle is as follows: feeding the material into the arc-shaped grinding groove 202 from a feed hopper 1, and grinding the material by matching a rotating grinding roller 203 with the arc-shaped grinding groove 202; when the first motor 211 drives the grinding roller 203 to rotate at a high speed, the ground raw material is thrown outward, the thrown raw material falls into the collection hopper 204, and the collection hopper 204 guides the raw material into the acceleration tube 205. High-pressure gas jetted by the air pump 206 is jetted into the accelerating tube 205 through the air nozzle 207, raw materials falling into the accelerating tube 205 from the collecting hopper 204 are accelerated by the high-pressure gas and then are jetted out from the orifice of the accelerating tube 205 and collide on the sand collision plate 304, the raw materials are ground into fine particles under the influence of friction and vibration force during collision, the sand collision plate 304 is arranged in a V shape, the sand collision plate 304 in a downward inclined state plays a role in guiding, so that the airflow blows the convex blades 307 to drive the turntable 306 to rotate, the first brush 313 arranged at the side of the turntable 306 brushes the powdery raw materials, the annular filter screen 303 can be quickly unblocked, meanwhile, the raw materials with larger particles filtered out are swept into the arc-shaped material guide tube 308 and then fall into the buffer tank 401; the gaseous derivation from arc guide tube 308 of getting into cylindric box 301, its in-process drive plate-shaped blade 311 drives drive shaft 310 rotatory, drive shaft 310 drives second belt pulley 315 rotatory through belt transmission, second belt pulley 315 drives carousel 306 rotatory, make carousel 306 rotational speed faster, play the effect of slowing down the air current impact force simultaneously, cooperation deep bead 403 keeps out the wind the effect, make the raw materials can fall smoothly and the gathering bottom buffer tank 401. The air flows back to the air pump 206 through the return air pipe 208 to be blown circularly. The raw materials falling into the buffer tank 401 enter the third screw conveyor 9 from the third discharge port 404, and are respectively re-conveyed to the feed hopper 1 through the third screw conveyor 9 and the fourth screw conveyor 10 to be re-fed and ground, so that circular grinding is formed until the particle size meets the requirement. A valve is arranged between the third screw conveyor 9 and the third discharge opening 404 for facilitating closing of the discharge opening into the third screw conveyor 9.

Example 2

Wherein the same or corresponding components as those in embodiment 1 are given the same reference numerals as those in embodiment 1, and only the points different from embodiment 1 will be described below for the sake of convenience. This example 2 differs from example 1 in that:

referring to fig. 1, 2, 4, 6, 7, 8, 9 and 10, the air returning mechanism 4 is connected to a secondary grinding mechanism.

Specifically, the secondary grinding mechanism includes a grinding mechanism a5, the grinding mechanism a5 includes a grinding box 501, a support 502 and a feeding pipe 503, the support 502 is fixed on the top of the grinding box 501, a second motor 509 is fixed on the top of the support 502, a first gear 510 is fixed on an output shaft of the second motor 509, a support column 505 inserted into an inner cavity of the grinding box 501 is fixed on the bottom of the support 502, a first grinding disc 506 is fixed on the bottom end of the support column 505, a rotating drum 507 movably sleeved on the outer side of the support column 505 is rotatably connected on the top of the grinding box 501 through a bearing, a first outer gear 508 engaged with the first gear 510 is fixed on the upper portion of the rotating drum 507, a first grinding plate 511 is uniformly fixed on the outer peripheral wall of the rotating drum 507, a feeding hole 517 is formed on the top of the first grinding plate 511, an outer sleeve 512 sleeved on the outer side of the first grinding plate 511 is fixed on the outer side end of the first grinding plate 511, the feeding pipe 503 is communicated with a third discharging hole 404, a gate valve 504 is provided on the feeding pipe 503.

By adopting the scheme, the principle is as follows: the second motor 509 drives the first gear 510 to rotate to drive the first outer gear 508 to rotate, the first outer gear 508 drives the rotating drum 507 to rotate, so as to drive the first grinding plate 511 to rotate, the first grinding plate 511 is provided with a plurality of pieces, raw materials falling from the buffer tank 401 enter the grinding box 501 through the feeding pipe 503 and then fall onto the first grinding disc 506, the raw materials are ground between the first grinding plate 511 and the first grinding disc 506, and the ground raw materials fall from the edge of the first grinding disc 506. The gate valve 504 is convenient for controlling the on-off of the feeding pipe 503.

Specifically, a conical filter screen 513 is fixed on the inner wall of the grinding box 501 below the first grinding disc 506, a bearing seat 516 is fixed at the bottom of the outer sleeve 512, the bearing seat 516 is rotatably connected with a roller brush 514 through a bearing, a conical gear 518 is fixed at one end of the roller brush 514, a conical toothed ring 515 meshed with the conical gear 518 is fixed on the inner wall of the grinding box 501, and a filter material outlet 519 is arranged at the bottom of the conical filter screen 513;

by adopting the scheme, the principle is as follows: when outer sleeve 512 is rotatory, promote bearing frame 516 and drive roller brush 514 motion, set up on toper ring gear 515 by conical gear 518 walking for roller brush 514 takes place the rotation during the motion, thereby brushes the raw materials of sweeping on the toper filter screen 513, makes the raw materials can divide the sieve fast, and difficult jam, and the great granule raw materials that filter out are discharged from filter material export 519.

Specifically, a conical material guide cover 520 is fixed on the inner wall of the grinding box 501 below the conical filter screen 513, and a sleeve nozzle 521 sleeved outside the filter material outlet 519 is arranged at the top of the conical material guide cover 520, so that the raw material discharged from the filter material outlet 519 is not easy to fall into the top of the conical material guide cover 520; an annular sliding chute 522 is fixed on the outer side of the sleeve nozzle 521, an annular sliding rail 523 is connected on the outer side of the annular sliding chute 522 in a sliding mode, an S-shaped supporting rod 524 movably inserted into a gap between the sleeve nozzle 521 and the filter material outlet 519 is fixed on the annular sliding rail 523, a rolling ball 525 is connected to the top of the S-shaped supporting rod 524 in a ball joint mode, one side of the rolling ball 525 is movably inserted into the axis of the end portion of the roller brush 514, a scraping plate 526 abutting against the outer side of the conical material guide cover 520 is fixed on the outer side of the S-shaped supporting rod 524, and a material outlet 527 is formed in the position, above the scraping plate 526, of one side of the grinding box 501.

By adopting the scheme, the principle is as follows: when the roller brush 514 moves, the roller brush 514 pushes the S-shaped supporting rod 524 to move through the rolling balls 525, the S-shaped supporting rod 524 rotates around the conical material guiding cover 520 under the matching guiding action of the annular sliding groove 522 and the annular sliding rail 523, so that the scraper 526 can scrape and sweep around the surface of the conical material guiding cover 520, and qualified raw material particles filtered out by the conical filter screen 513 can be pushed to the discharge port 527 to be discharged outwards.

Specifically, a supporting beam 528 is fixed on the inner wall of the outer sleeve 512 below the first grinding disk 506, a rotating shaft 529 is fixed on the central portion of the supporting beam 528, a cylinder 530 with a closed bottom is fixed on the bottom of the conical material guiding cover 520, a plurality of second grinding disks 532 are sequentially arranged in the cylinder 530 from top to bottom, a supporting rod 531 fixed on the inner wall of the cylinder 530 is arranged on the lateral side of the second grinding disks 532, the rotating shaft 529 is inserted in the cylinder 530 and sequentially and movably penetrates through the center of the second grinding disks 532, the top of the second grinding disks 532 is connected with second grinding plate sheets 533 fixed on the rotating shaft 529 in a butting manner, funnels 534 respectively located below the second grinding disks 532 are uniformly fixed on the inner wall of the cylinder 530, and a fourth discharge outlet 535 is arranged at the bottom of the cylinder 530.

By adopting the scheme, the principle is as follows: when the outer sleeve 512 rotates, it drives the supporting beam 528 and the rotating shaft 529 to rotate together, so that the raw material falling from the filter material outlet 519 can fall onto the second grinding disk 532, the rotating shaft 529 drives the second grinding plate 533 provided with multiple pieces to rotate, and the second grinding plate 533 and the second grinding disk 532 grind together, the ground raw material falls onto the funnel 534 from the side of the second grinding disk 532 and rolls onto the other second grinding disk 532 below to be ground, and the raw material after multi-stage grinding is discharged from the fourth discharge outlet 535.

Specifically, a first screw conveyor 7 is arranged below the fourth discharge opening 535, a second screw conveyor 8 is fixed on one side of the first screw conveyor 7, a feed inlet of the first screw conveyor 7 is communicated with the fourth discharge opening 535, a discharge outlet of the first screw conveyor 7 is communicated with a feed inlet of the second screw conveyor 8, and a discharge outlet of the second screw conveyor 8 is communicated with the feed hopper 1.

By adopting the scheme, the principle is as follows: the raw material discharged from the fourth discharge opening 535 is re-conveyed into the feed hopper 1 by the first screw conveyor 7 and the second screw conveyor 8, and is circularly ground.

Example 3

Wherein the same or corresponding components as those in embodiment 1 are given the same reference numerals as those in embodiment 1, and only the points different from embodiment 1 will be described below for the sake of convenience. This example 3 differs from example 1 in that:

referring to fig. 12 and 13, the air returning mechanism 4 is connected to a secondary grinding mechanism.

Specifically, the secondary grinding mechanism comprises a grinding mechanism B6, the grinding mechanism B6 comprises a cylindrical outer box 601 with two closed ends and a cylindrical inner box 602 with two closed ends, the cylindrical inner box 602 is rotatably connected to the inner cavity of the cylindrical outer box 601 in a manner of being movably embedded into an annular channel arranged on the inner wall of the cylindrical outer box 601, the annular channel is fixedly arranged on two inner side walls in the cylindrical outer box 601, and protrusions movably embedded into the annular channel are fixedly arranged on two end parts of the cylindrical inner box 602, so that the cylindrical inner box 602 can freely rotate; the top of the cylindrical outer box 601 is fixedly communicated with a feeding port 605, the bottom of the cylindrical outer box 601 is provided with a fifth discharge port 612, an arc-shaped filter screen 611 is arranged in the fifth discharge port 612, second brushes 603 are uniformly fixed on the outer side of the cylindrical inner box 602, the top of the cylindrical outer box 601 is fixed with a third motor 607, an output shaft of the third motor 607 is fixed with a second gear 608, and the outer side of the cylindrical inner box 602 is fixed with a second outer gear ring 606 which is meshed with the second gear 608. The inside of the cylindrical inner box 602 is fixed with a mesh inner tube 604, the side of the cylindrical inner box 602 is in mesh arrangement, a spherical cavity 613 is uniformly arranged in the mesh inner tube 604, an elliptical grinding ball 615 is movably arranged in the spherical cavity 613, a second sand grinding layer 614 is arranged on the inner wall of the spherical cavity 613, and a through hole 616 communicated with the spherical cavity 613 is uniformly arranged on the inner side wall of the mesh inner tube 604. An interlayer cavity 609 is arranged between the reticular inner cylinder 604 and the cylindrical inner box 602, grinding balls 610 are movably placed in the interlayer cavity 609, and the grinding balls 610 are arranged in a spherical shape, so that the phenomenon of clamping is not easy to occur.

By adopting the scheme, the principle is as follows: the third motor 607 drives the second gear 608 to rotate, the second gear 608 drives the second external gear ring 606 to rotate, and the second external gear ring 606 drives the cylindrical inner box 602 to rotate; the feeding port 605 is connected with the third discharging port 404 in a communicating state, so that the raw material in the buffer tank 401 enters the cylindrical outer tank 601 from the feeding port 605, the raw material enters the interlayer cavity 609 and the inner cavity of the mesh inner cylinder 604 from the surface holes of the cylindrical inner tank 602 and the mesh inner cylinder 604, the raw material enters the spherical cavity 613 from the through hole 616, under the influence of the rotation of the mesh inner cylinder 604, the elliptical grinding balls 615 roll, a grinding effect on the raw material is formed between the raw material and the second sand grinding layer 614 during the rolling process, when the opening of the through hole 616 is downward along with the change of the position of the spherical cavity 613, the raw material is discharged from the through hole 616, the size of the elliptical grinding balls 615 is larger than that of the through hole 616, so that the elliptical grinding balls 615 cannot be separated from the spherical cavity 613, the ground raw material is discharged into the cylindrical outer tank 601 again through the surface holes of the cylindrical inner tank 602 and the mesh inner cylinder 604, and the raw material can be thrown out again through the cylindrical inner tank 602 and the mesh inner cylinder 604 by the second brush 603, and then passes through the cylindrical inner tank 602 and the inner cylinder 604 The surface voids of (a) are re-entered into the interlayer cavity 609 and the mesh inner cylinder 604 to form a circular flow effect. The raw material entering the interlayer cavity 609 is ground by the mutual collision and friction of a plurality of grinding balls 610. The ground raw material is screened by the arc-shaped screen 611, and the screened qualified granular raw material is discharged outwards through the fifth discharge port 612. The fifth discharge opening 612 may be connected to the first screw conveyor 7 and the second screw conveyor 8 so that the raw material can be re-conveyed to the feed hopper 1 for circulating grinding and screening.

The electrical device hereinbefore: the air pump 206, the first motor 211, the second motor 509, the third motor 607, the first screw conveyor 7, the second screw conveyor 8, the third screw conveyor 9, and the fourth screw conveyor 10 are all conventional electric appliances, and are configured with power control switches, which belong to the prior art and are not described herein again.

s1, putting powdery paint raw materials into a feed hopper 1, starting a first motor 211 to drive a grinding roller 203 to rotate, enabling the raw materials in the feed hopper 1 to enter an arc-shaped grinding groove 202 through a first discharge port 101, grinding the raw materials by the grinding roller 203, enabling the ground raw materials to enter an accelerating tube 205, enabling high-pressure gas sprayed by an air pump 206 to accelerate the raw materials entering the accelerating tube 205 and then spray the raw materials outwards, enabling the sprayed raw materials to collide against a sand collision plate 304, enabling the raw materials to be ground more finely by vibration and friction force generated by the collision, filtering the ground raw materials by an annular filter screen 303, and discharging the filtered qualified raw materials from a second discharge port 309; the unqualified raw material particles are conveyed into the buffer tank 401 through the arc-shaped material guide pipe 308, and the gas flows back to the gas pump 206 through the air return pipe 208 to be circularly blown;

s2, the raw material entering the buffer tank 401 flows back to the feed hopper 1 again through the third screw conveyor 9 and the fourth screw conveyor 10, and the grinding step in the circulation S1 is carried out;

s3, when secondary grinding is needed, stopping the third screw conveyor 9 and the fourth screw conveyor 10, and selecting one of the grinding mechanism A5 or the grinding mechanism B6 to be connected with the third discharge port 404;

s4, when the grinding mechanism A5 is selected, the feeding pipe 503 is connected with the third discharge port 404 to be conducted, raw materials fall on the first grinding disc 506, the first grinding plate 511 is driven by the second motor 509 to rotate and grind, the ground raw materials fall on the conical filter screen 513 to be screened, unqualified raw material particles screened out fall on the second grinding disc 532 to be ground again, and the ground raw materials are discharged through the fourth discharge port 535; re-conveying the material discharged from the fourth discharge opening 535 to the feed hopper 1 through the first screw conveyor 7 and the second screw conveyor 8, and circulating the grinding steps of S1, S2 and S3;

when the grinding mechanism B6 is selected, the material inlet port 605 and the third material outlet port 404 are connected in a butt joint manner to be conducted, the third motor 607 is started to drive the cylindrical inner box 602 to rotate, the raw material enters the cylindrical outer box 601 through the material inlet port 605 and then falls into the spherical cavity 613 from the surface holes of the cylindrical inner box 602 and the mesh inner cylinder 604, the elliptical grinding balls 615 are driven to turn over along with the rotation of the cylindrical inner box 602 to grind the raw material in the spherical cavity 613, and the ground raw material is filtered by the arc-shaped filter screen 611 and then discharged from the fifth material outlet port 612; the material discharged from the fifth discharge opening 612 is re-conveyed into the feed hopper 1 by the first and

second screw conveyors

7 and 8, and the grinding steps of S1, S2, and S3 are circulated.

By the method, the grinding of the raw materials is more comprehensive by matching with a high-performance paint grinding device, the grinding efficiency is greatly improved, and the grinding is more uniform, so that the paint quality can be effectively improved.

In conclusion, the invention has the following advantages:

1. the high-performance paint grinding device carries out primary grinding through the grinding roller 203, then the raw materials are led into the accelerating tube 205, accelerated and sprayed out from the tube opening of the accelerating tube 205 and collide on the sand-stone collision plate 304, the raw materials are ground into fine particles under the influence of friction and vibration force when colliding, blown air flow blows the raised blades 307 to drive the rotary table 306 to rotate, the first brushes 313 arranged at the side of the rotary table 306 brush and sweep powdery raw materials, so that the annular filter screen 303 can rapidly filter the materials without being blocked, meanwhile, the filtered raw materials with larger particles are swept into the arc-shaped material guide tube 308, and are conveyed to the feed hopper 1 again through the third screw conveyor 9 and the fourth screw conveyor 10 to carry out re-feeding grinding, and circular grinding is formed until the particle size meets the requirements;

2. the high-performance paint grinding device can be matched and used in a free combination mode, the grinding mechanism A5 and the grinding mechanism B6 are conveniently selected to be in butt joint with the air return mechanism 4 according to product requirements, or the grinding mechanism A5 and the grinding mechanism B6 are not adopted to be used independently, so that the device is wide in applicability;

3. when the grinding mechanism A5 is selected, the high-performance paint grinding device carries out multi-stage grinding by the first grinding disc 506 and the second grinding disc 532, so that the grinding efficiency is improved, and the high filtering material performance of the conical filter screen 513 can be kept by the self-rotating roller brush 514;

4. when the grinding mechanism B6 is selected, the rotating cylindrical inner box 602 drives the elliptical grinding balls 615 to roll in the spherical cavity 613, so that raw materials in the spherical cavity 613 can be repeatedly ground, and the grinding balls 610 are used for assisting grinding, so that the grinding effect is better, and the grinding efficiency is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high performance paint grinder assembly, comprising:

the device comprises an accelerating mechanism (2), wherein the accelerating mechanism (2) comprises an accelerating box body (201), an arc-shaped grinding groove (202), grinding rollers (203), a material collecting hopper (204) and an accelerating tube (205), the arc-shaped grinding groove (202) is positioned at the upper part of the inner cavity of the accelerating box body (201), the grinding rollers (203) are positioned in the groove of the arc-shaped grinding groove (202), the material collecting hopper (204) is positioned at one side of the arc-shaped grinding groove (202), and the top of one side of the accelerating tube (205) is communicated with a material port at the bottom of the material collecting hopper (204);

a collision mechanism (3), wherein the collision mechanism (3) comprises a cylindrical box body (301), an inner ring (302), an annular filter screen (303), a sand collision plate (304), a driven shaft (305) and a rotary disc (306), the inner ring (302) is fixed in the middle of the cylindrical box body (301), the sand impact plate (304) is fixed on the inner ring (302), the sand impact plate (304) is arranged at the outlet close to the accelerating pipe (205) in a downward inclined shape, the number of the ring-shaped filter screens (303) is two and the ring-shaped filter screens are respectively positioned at two sides of the inner ring (302), the driven shaft (305) is rotatably connected in the cylindrical box body (301) and fixed at the center of the turntable (306), the rotary disc (306) is positioned in the inner ring of the annular filter screen (303), one side of the annular filter screen (303) is provided with an air return mechanism (4), and the air return mechanism (4) is connected with a secondary grinding mechanism;

the two sides of the inner ring (302) in the cylindrical box body (301) are respectively provided with a filter material cavity (312), two annular filter screens (303) are respectively positioned in the filter material cavities (312), the bottom of the cylindrical box body (301) is fixed with a second discharge hole (309) communicated with the two filter material cavities (312), one end of a driven shaft (305) extends to the outer side of the cylindrical box body (301) and is fixedly connected with a first belt pulley (314), the outer side of the rotary disc (306) is annularly and uniformly fixed with raised blades (307), the lateral side of the rotary disc (306) is uniformly fixed with a first brush (313), one side of the annular filter screen (303) is fixed with an arc guide pipe (308) communicated with the inner cavity of the annular filter screen, the inner cavity of the arc guide pipe (308) is rotatably connected with a driving shaft (310) through a bearing, the outer side of the driving shaft (310) is uniformly provided with plate-shaped blades (311), one end of the driving shaft (310) extends to the outer side of the arc-shaped material guide pipe (308) and is fixedly provided with a second belt pulley (315), and the second belt pulley (315) is connected with the first belt pulley (314) through a belt;

a first motor (211) is fixed on the outer side of the acceleration box body (201), and an output shaft of the first motor (211) is fixedly connected with one end of the grinding roller (203);

an air pump (206) is fixed in the acceleration box body (201), an air outlet end of the air pump (206) is communicated with an air nozzle (207) fixedly inserted into the acceleration tube (205), and an air inlet end of the air pump (206) is communicated with an air return tube (208);

a first sand grinding layer (210) is fixed on the inner wall of the accelerating tube (205), and a guide plate (209) is fixed at the discharge port of the aggregate bin (204) in the accelerating tube (205);

the air return mechanism (4) comprises a buffer tank (401), a dust screen (402) and a wind shield (403), one end opening of the arc-shaped guide pipe (308) is communicated with the top of one side of the buffer tank (401), the other side of the top of the buffer tank (401) is communicated with the air return pipe (208), the dust screen (402) is arranged at the pipe opening of the air return pipe (208) inserted into the inner cavity of the buffer tank (401), the wind shield (403) is arranged under the discharge pipe opening of the arc-shaped guide pipe (308), the bottom of the buffer tank (401) is provided with a third discharge opening (404), the bottom of the buffer tank (401) is fixed with a third screw conveyor (9), one side of the third screw conveyor (9) is fixed with a fourth screw conveyor (10), the feed inlet of the third screw conveyor (9) is communicated with the third discharge opening (404), the discharge outlet of the third screw conveyor (9) is communicated with the feed inlet of the fourth screw conveyor (10), a discharge hole of the fourth screw conveyor (10) is communicated with the feed hopper (1);

the secondary grinding mechanism comprises a grinding mechanism A (5), the grinding mechanism A (5) comprises a grinding box (501), a support (502) and a feeding pipe (503), the support (502) is fixed at the top of the grinding box (501), a second motor (509) is fixed at the top of the support (502), a first gear (510) is fixed at an output shaft of the second motor (509), a support pillar (505) inserted into an inner cavity of the grinding box (501) is fixed at the bottom of the support (502), a first grinding disc (506) is fixed at the bottom end of the support pillar (505), a rotating drum (507) movably sleeved outside the support pillar (505) is rotatably connected at the top of the grinding box (501) through a bearing, a first outer gear (508) meshed and connected with the first gear (510) is fixed at the upper part of the rotating drum (507), and first grinding plates (511) are uniformly fixed on the peripheral wall of the outer side of the rotating drum (507), a feeding hole (517) is formed in the top of the first grinding plate sheet (511), an outer sleeve (512) sleeved outside the first grinding disc (506) is fixed to the outer side end of the first grinding plate sheet (511), the feeding pipe (503) is communicated with the third discharging port (404), and a gate valve (504) is arranged on the feeding pipe (503);

a conical filter screen (513) is fixed on the inner wall of the grinding box (501) below the first grinding disc (506), a bearing seat (516) is fixed at the bottom of the outer sleeve (512), the bearing seat (516) is rotatably connected with a roller brush (514) through a bearing, a conical gear (518) is fixed at one end of the roller brush (514), a conical gear ring (515) meshed and connected with the conical gear (518) is fixed on the inner wall of the grinding box (501), and a filter material outlet (519) is formed in the bottom of the conical filter screen (513);

a conical material guide cover (520) is fixed on the inner wall of the grinding box (501) below the conical filter screen (513), the top of the conical material guide cover (520) is provided with a sleeve nozzle (521) sleeved outside the filter material outlet (519), an annular sliding chute (522) is fixed on the outer side of the sleeve nozzle (521), an annular sliding rail (523) is connected on the outer side of the annular sliding chute (522) in a sliding manner, an S-shaped support rod (524) movably inserted in a gap between the sleeve nozzle (521) and the filter material outlet (519) is fixed on the annular slide rail (523), the top of the S-shaped support rod (524) is ball-jointed with a rolling ball (525), one side of the rolling ball (525) is movably inserted into the axle center of the end part of the roller brush (514), a scraper plate (526) which is abutted against the outer side of the conical material guide cover (520) is fixed on the outer side of the S-shaped support rod (524), a discharge port (527) is formed in one side of the grinding box (501) above the scraper (526);

a support beam (528) is fixed on the inner wall of the outer sleeve (512) below the first grinding disc (506), a rotating shaft (529) is fixed at the center of the supporting beam (528), a cylinder body (530) with a closed bottom is fixed at the bottom of the conical material guiding cover (520), a plurality of second grinding discs (532) are sequentially arranged in the cylinder body (530) from top to bottom, a supporting rod (531) fixed on the inner wall of the cylinder body (530) is arranged at the side of the second grinding disc (532), the rotating shaft (529) is inserted into the cylinder (530) and sequentially and movably penetrates through the center of the second grinding disc (532), the top of the second grinding disk (532) is connected with a second grinding plate sheet (533) fixed on the rotating shaft (529) in an abutting mode, funnels (534) respectively positioned below the second grinding discs (532) are uniformly fixed on the inner wall of the cylinder body (530), and a fourth discharge opening (535) is formed in the bottom of the cylinder body (530);

a first spiral conveyor (7) is arranged below the fourth discharge opening (535), a second spiral conveyor (8) is fixed on one side of the first spiral conveyor (7), a feed inlet of the first spiral conveyor (7) is communicated with the fourth discharge opening (535), a discharge outlet of the first spiral conveyor (7) is communicated with a feed inlet of the second spiral conveyor (8), and a discharge outlet of the second spiral conveyor (8) is communicated with the feed hopper (1);

the secondary grinding mechanism further comprises a grinding mechanism B (6), the grinding mechanism B (6) comprises a cylindrical outer box (601) with two closed ends and a cylindrical inner box (602) with two closed ends, the cylindrical inner box (602) is connected with an inner cavity of the cylindrical outer box (601) in a rotating mode in an annular channel arranged on the inner wall of the cylindrical outer box (601) through movable embedding, the top of the cylindrical outer box (601) is fixedly communicated with a feeding port (605), the bottom of the cylindrical outer box (601) is provided with a fifth discharge port (612), an arc-shaped filter screen (611) is arranged in the fifth discharge port (612), a second brush (603) is uniformly fixed on the outer side of the cylindrical inner box (602), a third motor (607) is fixed on the top of the cylindrical outer box (601), a second gear (608) is fixed on an output shaft of the third motor (607), and a second outer gear ring (606) connected with the second gear (608) in a meshing mode is fixed on the outer side of the cylindrical inner box (602) (ii) a

A reticular inner barrel (604) is fixed in the cylindrical inner box (602), the sides of the cylindrical inner box (602) are arranged in a reticular manner, spherical cavities (613) are uniformly formed in the reticular inner barrel (604), elliptical grinding balls (615) are movably placed in the spherical cavities (613), a second sand grinding layer (614) is arranged on the inner wall of each spherical cavity (613), and through holes (616) communicated with the spherical cavities (613) are uniformly formed in the inner side wall of the reticular inner barrel (604);

an interlayer cavity (609) is arranged between the reticular inner cylinder (604) and the cylindrical inner box (602), and grinding balls (610) are movably placed in the interlayer cavity (609).

2. A process of a high performance paint grinder assembly as set forth in claim 1, wherein: the method comprises the following steps:

s1, putting powdery paint raw materials into a feed hopper (1), then starting a first motor (211) to drive a grinding roller (203) to rotate, enabling the raw materials in the feed hopper (1) to enter an arc-shaped grinding groove (202) through a first discharge port (101), grinding the raw materials by the grinding roller (203), enabling the ground raw materials to enter an accelerating tube (205), accelerating the raw materials entering the accelerating tube (205) by high-pressure gas sprayed by an air pump (206) and then spraying the accelerated raw materials outwards, enabling the sprayed raw materials to collide against a sand collision plate (304), enabling the raw materials to be more finely ground by vibration and friction force generated by collision, then filtering the ground raw materials through an annular filter screen (303), and discharging the filtered qualified raw materials from a second discharge port (309); unqualified raw material particles are conveyed into the buffer tank (401) through the arc-shaped material guide pipe (308), and the gas flows back to the air pump (206) through the air return pipe (208) to be circularly blown;

s2, the raw material entering the buffer tank (401) flows back to the feed hopper (1) again through the third screw conveyor (9) and the fourth screw conveyor (10), and the grinding step in the circulation S1 is carried out;

s3, when secondary grinding is needed, stopping the third screw conveyor (9) and the fourth screw conveyor (10) from working, and selecting one of the grinding mechanism A (5) or the grinding mechanism B (6) to be connected with the third discharge port (404);

s4, when the grinding mechanism A (5) is selected, a feeding pipe (503) is connected with a third discharge port (404) to be conducted, raw materials fall onto a first grinding disc (506), a second motor (509) drives a first grinding plate sheet (511) to rotate and grind, the ground raw materials fall onto a conical filter screen (513) to be screened, unqualified raw material particles which are screened out fall onto a second grinding disc (532) to be ground again, and the ground raw materials are discharged through a fourth discharge port (535); re-conveying the material discharged from the fourth discharge opening (535) into the feed hopper (1) through the first screw conveyor (7) and the second screw conveyor (8), and circulating the grinding steps of S1, S2 and S3;

when the grinding mechanism B (6) is selected, the feeding interface (605) is in butt joint with the third discharge port (404) to be conducted, the third motor (607) is started to drive the cylindrical inner box (602) to rotate, raw materials enter the cylindrical outer box (601) through the feeding interface (605) and then fall into the spherical cavity (613) from surface holes of the cylindrical inner box (602) and the mesh-shaped inner cylinder (604), the elliptical grinding balls (615) are driven to overturn along with the rotation of the cylindrical inner box (602) to grind the raw materials in the spherical cavity (613), and the ground raw materials are filtered by the arc-shaped filter screen (611) and then discharged from the fifth discharge port (612); the material discharged from the fifth discharge opening (612) is re-conveyed into the feed hopper (1) by the first screw conveyor (7) and the second screw conveyor (8), and the grinding steps of S1, S2 and S3 are circulated.