CN115382617B - Preparation method and preparation equipment of thermosetting fluorine modified powder coating - Google Patents
Preparation method and preparation equipment of thermosetting fluorine modified powder coating Download PDFInfo
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- CN115382617B CN115382617B CN202211149986.XA CN202211149986A CN115382617B CN 115382617 B CN115382617 B CN 115382617B CN 202211149986 A CN202211149986 A CN 202211149986A CN 115382617 B CN115382617 B CN 115382617B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crushing And Grinding (AREA)
Abstract
The application discloses a preparation method and preparation equipment of thermosetting fluorine modified powder coating, which relate to the technical field of powder coating preparation and comprise a double-roller multistage crushing mechanism, wherein the double-roller multistage crushing mechanism comprises: a frame; the two rotating rollers are arranged on the frame in a mutually reverse rotation way, each rotating roller comprises a crushing section and a crushing section which are connected, crushing teeth on the two crushing sections are meshed with each other to form a crushing unit, and crushing teeth on the two crushing sections are meshed with each other to form a crushing unit; the screen cylinder is rotatably arranged on the frame, the screen cylinder is sleeved on the outer sides of the two crushing sections, a plurality of arc plates distributed in an annular array are arranged on the inner peripheral side of the screen cylinder, the first helical blades are fixedly connected to the outer peripheral side of the screen cylinder, one end of the screen cylinder is rotatably connected with a first end plate, and the two rotating rollers movably penetrate through the first end plate. The preparation equipment provided by the application realizes multistage crushing through the double rollers, and has the advantages of compact structure and good crushing effect.
Description
Technical Field
The application relates to the technical field of powder coating preparation, in particular to a preparation method and preparation equipment of thermosetting fluorine modified powder coating.
Background
The powder coating contains no solvent, and has good pigment dispersibility and good storage stability. The flexibility, hardness, adhesive force and other properties of the coating can be balanced, and the acid rain resistance, ozone resistance, ultraviolet resistance and chemical property of the coating are very good. The thermosetting powder coating has good powder distribution property, good adhesive force to metal substrates such as aluminum profiles, galvanized steel sheets, stainless steel sheets and the like, and can be prepared into modified powder coatings with different weather resistance and coating film performance requirements with other weather-resistant resins.
The powder coating is formed into a sheet-shaped coating after being pressed and cooled, and the sheet-shaped coating is required to be crushed. The patent with publication number CN210022259U, named "a device for pulverizing powder coating after hot melting", comprises a frame; two swinging plates are hinged on the frame in parallel, and a cleaning roller and a crushing roller are arranged between the two swinging plates in parallel; the peripheral wall of the cleaning roller is provided with brushes, and crushing teeth are uniformly distributed on the peripheral wall of the crushing roller; the cleaning roller is equipped with linkage part between the crushing roller, and the end that the frame is close to the crushing roller is the feed end, is equipped with the backup pad that is used for supporting the raw materials in the feed end, the backup pad is located the below of crushing roller, and be equipped with crushing clearance between the crushing roller, the swing section of two swing boards is equipped with jointly and is used for adjusting crushing clearance size adjustment mechanism.
In the prior art such as the one described in the above patent, the size of the crushing teeth on the pair of crushing rollers is uniform and uniformly distributed, and it is generally only possible to crush the sheet-like paint once, and the paint is insufficiently crushed.
Disclosure of Invention
The application aims to provide a preparation method and preparation equipment of a thermosetting fluorine modified powder coating, which are used for solving the defects in the prior art.
In order to achieve the above object, the present application provides the following technical solutions: the preparation equipment of thermosetting fluorine modified powder coating includes two roller multistage crushing mechanisms, two roller multistage crushing mechanisms include: a frame; the two rotating rollers are arranged on the frame in a mutually reverse rotation way, each rotating roller comprises a crushing section and a crushing section which are connected, crushing teeth on the two crushing sections are meshed with each other to form a crushing unit, and crushing teeth on the two crushing sections are meshed with each other to form a crushing unit; the screening cylinder is rotatably arranged on the frame, the screening cylinder is sleeved outside the two crushing sections, a plurality of arc plates distributed in an annular array are arranged on the inner peripheral side of the screening cylinder, the outer peripheral side of the screening cylinder is fixedly connected with a first helical blade, one end of the screening cylinder is rotatably connected with a first end plate, and the two rotating rollers movably penetrate through the first end plate; the first cylinder is fixedly arranged on the frame, the first cylinder is sleeved outside the screen cylinder, and the outer sides of the first spiral blades are movably attached to the inner wall of the first cylinder; the annular plate is fixedly connected to the end face of the screen cylinder, the inner peripheral side of the annular plate is rotationally connected with a partition plate, the two rotating rollers movably penetrate through the partition plate, and the partition plate is positioned at the junction of the crushing section and the crushing section of the rotating rollers; the second cylinder is rotationally arranged on the first cylinder, a plurality of spiral plates distributed in an annular array are fixedly connected to the inner wall of the second cylinder, a plurality of parallel convex edges are arranged on each spiral plate, and one side, away from the second cylinder, of each spiral plate is fixedly connected with the screen cylinder; the third cylinder is fixedly connected to the frame, is rotationally connected with the second cylinder, one end of the third cylinder is rotationally connected with the annular plate, the top of the cylinder body of the third cylinder is provided with a blanking port, the blanking port is positioned above the space between the two crushing sections, one end of the third cylinder, which is far away from the annular plate, is fixedly connected with a second end plate, and the bottom of the second end plate is provided with a blanking port; one end of the second spiral blade is fixedly connected to the annular plate, and the outer side of the second spiral blade is movably attached to the inner wall of the third cylinder; and the feeding assembly is used for guiding the materials to be crushed to the upper part between the two crushing sections.
Further, the double-roller multistage crushing mechanism further comprises a first driving assembly, wherein the first driving assembly is used for driving the two rotating rollers to rotate in opposite directions and driving the screen drum to rotate.
Further, the first driving assembly includes: the two first gears are coaxially and fixedly connected with the central shaft of one rotating roller respectively, and are meshed with each other; the servo motor is fixedly arranged on the frame, and a power output shaft of the servo motor is coaxially and fixedly connected with any central shaft; the second gear is rotatably arranged on the frame and meshed with any one of the first gears; the first annular gear is coaxially and fixedly connected to the end face of the screen cylinder and meshed with the second gear.
Further, each arc is an arc screen, each arc is internally provided with a screen assisting component, and each screen assisting component comprises: the shaft lever is rotationally connected to the annular plate, and a plurality of poking plates are fixedly connected to the shaft lever; the third gear is coaxially and fixedly connected to one end of the shaft rod penetrating through the annular plate; and the second annular gear is coaxially and fixedly connected to the third cylinder and meshed with the third gear.
Further, the material loading subassembly includes: the feeding groove is fixedly arranged on the first end plate, a feeding opening is formed in the upper portion of the first end plate, one end of the feeding groove is provided with a limiting plate, and the other end of the feeding groove is communicated with the inside of the screen cylinder through the feeding opening; the pushing plate is arranged in the feeding groove in a sliding way, and a first station attached to the limiting plate and a second station positioned at the feeding opening are arranged on the sliding stroke of the pushing plate; the connecting rod is fixedly connected with the bottom of the stacking plate; the end part of the material supporting plate is rotationally connected with one end of the connecting rod, which is far away from the material stacking plate, and when the material pushing plate is at the first station, the material supporting plate is horizontally attached to the bottom of the material feeding groove, and a space is reserved between the supporting plate and the material pushing plate; the guide rail is fixedly connected to the partition plate and comprises a straight section and an inclined guide section; and the sliding column is fixedly connected to the material supporting plate, and the sliding column slides up the straight section through the guide section in the process that the material pushing plate slides to the second station so as to enable the material supporting plate to rotate and incline.
Further, the feeding assembly further comprises a second driving assembly, and the second driving assembly is used for driving the pushing plate to slide.
Further, the second driving assembly comprises a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixedly arranged on the frame, and the open end of a hydraulic rod of the hydraulic cylinder is fixedly connected with the pushing plate through a connecting rod.
Further, two first coamings are arranged between the first end plate and the partition plate and are respectively positioned above one rotating roller.
A method for preparing a thermosetting fluorine modified powder coating comprising the preparation device, which comprises the following steps: s1: introducing the raw materials of the thermosetting fluorine modified powder coating into a bucket overturning type automatic mixer for mixing and dissolving to form a mixed material; s2: the mixed material is extruded by a reciprocating damping type single screw extruder to obtain a further uniformly dispersed molten coating, the temperature of the front section of the mixed material in the reciprocating damping type single screw extruder is 100+/-5 ℃, the temperature of the middle section of the mixed material in the reciprocating damping type single screw extruder is 105+/-5 ℃, and the temperature of the tail section of the mixed material in the reciprocating damping type single screw extruder is 110+/-5 ℃; s3: the molten coating is flaked and cooled to obtain flakes; s4: crushing the flaky paint by a double-roller multistage crushing mechanism to obtain coarse material; s5: grinding the coarse material by a double-separation ACM mill, wherein the main mill is 48-50HZ, and the auxiliary mill is 23-25HZ to obtain a thermosetting fluorine modified powder coating; s6: the thermosetting fluorine modified powder coating in S5 was tested using a dry powder particle size distribution meter test.
Further, the thermosetting fluorine modified powder coating comprises the following raw materials in parts by weight: 50% -52% of SJ4ET outdoor polyester, 8% -10% of F750H fluororesin, 4% -5% of curing agent, 1.5% -2.5% of auxiliary agent, 19.5% -23% of weather-resistant pigment and 8% -11% of filler.
In the technical scheme, the preparation equipment of the thermosetting fluorine modified powder coating provided by the application comprises the crushing sections and the crushing sections which are connected, wherein the crushing teeth on the two crushing sections are meshed with each other to form the crushing unit, the crushing unit can crush the flaky coating, the rotating screen cylinder is matched with the arc plate to screen the crushed coating, the defective coating with large granularity is conveyed to the crushing unit by the screen cylinder and the arc plate to be crushed again, the qualified coating with small granularity falls into the first cylinder, the rotating screen cylinder is matched with the first spiral blade to convey the qualified coating in the first cylinder into the second cylinder, the rotating second cylinder is matched with the spiral plate to convey the coating in the second cylinder to the crushing unit to be crushed, the spiral plate and the convex rib can enable the coating to be uniformly distributed in the length direction, the crushed coating is fully crushed, and then the crushed coating is conveyed to the discharging port by the rotating second spiral blade.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIGS. 1-2 are schematic views of an overall structure according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a first driving assembly according to an embodiment of the present application;
FIGS. 4-5 are schematic views of a partial structure of an interior according to an embodiment of the present application;
FIG. 6 is an enlarged view of the structure at C in FIG. 6 according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of two rotating rollers according to an embodiment of the present application;
FIG. 8 is a side view of a structure provided by an embodiment of the present application;
FIG. 9 is a plan cross-sectional view taken along line A-A of FIG. 8, provided by an embodiment of the present application;
FIG. 10 is an enlarged view of the structure at D in FIG. 9 provided by an embodiment of the present application;
FIG. 11 is a perspective cross-sectional view taken along line A-A in FIG. 8, in accordance with an embodiment of the present application;
FIG. 12 is a plan cross-sectional view taken along line B-B in FIG. 8, in accordance with an embodiment of the present application;
FIG. 13 is a perspective cross-sectional view taken along line B-B in FIG. 8, in accordance with an embodiment of the present application;
FIG. 14 is a schematic view of the overall structure of the second station according to the embodiment of the present application;
FIG. 15 is a plan cross-sectional view taken along line A-A of FIG. 8 at a second station provided in accordance with an embodiment of the present application;
fig. 16 is a perspective cross-sectional view taken along line A-A in fig. 8 at a second station provided in accordance with an embodiment of the present application.
Reference numerals illustrate:
1. a frame; 2. a rotating roller; 2.1, crushing section; 2.2, crushing section; 3. a screen drum; 4. an arc-shaped plate; 5. a first helical blade; 6. a first end plate; 7. a first cylinder; 8. an annular plate; 9. a partition plate; 10. a second cylinder; 11. a spiral plate; 11.1, convex edges; 12. a third cylinder; 12.1, a blanking port; 13. a second end plate; 13.1, a feed opening; 14. a second helical blade; 15. a feeding assembly; 15.1, feeding groove; 15.2, a feeding hole; 15.3, limiting plates; 15.4, a pushing plate; 15.5, connecting rods; 15.6, a material supporting plate; 15.7, guide rails; 15.71, straight sections; 15.72, a guide section; 15.8, a strut; 16. a first drive assembly; 16.1, a first gear; 16.2, a servo motor; 16.3, a second gear; 16.4, a first annular gear; 17. a screening aid assembly; 17.1, shaft lever; 17.2, a poking plate; 17.3, a third gear; 17.4, a second annular gear; 18. a second drive assembly; 18.1, a connecting rod; 19. a first coaming; 20. and a second coaming.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1-16, the preparation device for thermosetting fluorine modified powder coating provided by the embodiment of the application comprises a double-roller multi-stage crushing mechanism, wherein the double-roller multi-stage crushing mechanism comprises a frame 1, two rotating rollers 2, a screen cylinder 3, a first cylinder 7, an annular plate 8, a second cylinder 10, a third cylinder 12, a second helical blade 14 and a feeding component 15, wherein the two rotating rollers 2 are arranged on the frame 1 in a mutually reverse rotation manner, each rotating roller 2 comprises a crushing section 2.1 and a crushing section 2.2 which are connected, crushing teeth on the two crushing sections 2.1 are mutually meshed to form a crushing unit, the crushing teeth on the two crushing sections 2.2 are mutually meshed to form a crushing unit, the screen cylinder 3 is rotatably arranged on the frame 1, the screen cylinder 3 is sleeved outside the two crushing sections 2.1, a plurality of annular plates 4 distributed in an annular array are arranged on the inner circumference side of the screen cylinder 3, the outer circumference side of the screen cylinder 3 is fixedly connected with a first spiral blade 5, one end of the screen cylinder 3 is rotationally connected with a first end plate 6, two rotating rollers 2 movably penetrate through the first end plate 6, the first cylinder 7 is fixedly arranged on the frame 1, the first cylinder 7 is sleeved outside the screen cylinder 3, the outer side of the first spiral blade 5 is movably attached to the inner wall of the first cylinder 7, an annular plate 8 is fixedly connected with the end face of the screen cylinder 3, the inner circumference side of the annular plate 8 is rotationally connected with a partition plate 9, two rotating rollers 2 movably penetrate through the partition plate 9, the partition plate 9 is positioned at the junction of a crushing section 2.1 and a crushing section 2.2 of the rotating rollers 2, a plurality of spiral plates 11 distributed in an annular array are rotationally arranged on the inner wall of the second cylinder 10, one side of each spiral plate 11 far away from the second cylinder 10 is fixedly connected with the screen cylinder 3, a plurality of parallel convex edges 11.1 are arranged on each spiral plate 11, the third cylinder 12 is fixedly connected to the frame 1, the third cylinder 12 is rotationally connected with the second cylinder 10, one end of the third cylinder 12 is rotationally connected with the annular plate 8, preferably, an auxiliary structure for assisting the rotation of the third cylinder 12 is arranged on the frame 1, a blanking port 12.1 is formed in the top of the cylinder body of the third cylinder 12, the blanking port 12.1 is located above the two crushing sections 2.2, one end of the third cylinder 12, far away from the annular plate 8, is fixedly connected with a second end plate 13, a blanking port 13.1 is formed in the bottom of the second end plate 13, one end of a second spiral blade 14 is fixedly connected to the annular plate 8, the outer side of the second spiral blade 14 is movably attached to the inner wall of the third cylinder 12, and a feeding assembly 15 is used for guiding materials to be crushed to the upper side between the two crushing sections 2.1.
In the technical scheme, materials (sheet-shaped paint, also called sheet materials) are guided between two crushing sections 2.1 through a feeding component 15, the crushing units can crush the sheet materials, paint particles subjected to crushing treatment fall into a screen cylinder 3 below, the rotating screen cylinder 3 is matched with an arc plate 4 to drive the paint particles to rotate, the paint particles roll relatively along the inner wall of the screen cylinder 3 under the action of gravity so as to effectively screen, the unqualified paint with large granularity is conveyed to the upper part of the crushing units by the screen cylinder 3 and the arc plate 4 and falls between the crushing units to be crushed again, the qualified paint with small granularity falls into a first cylinder 7 through the screen cylinder 3, the rotating screen cylinder 3 drives a first helical blade 5 to rotate so as to push the qualified paint in the first cylinder 7 into a second cylinder 10, and the unqualified paint is accumulated at the bottom of the second cylinder 10 and is close to the annular plate 8, the screen cylinder 3 rotates and drives the annular plate 8 to rotate, the annular plate 8 drives each spiral plate 11 to rotate, each spiral plate 11 drives the second cylinder 10 to rotate, the rotating second cylinder 10 is matched with the spiral plates 11 to convey the paint in the second cylinder 10 to the position above the crushing unit and fall between the two crushing sections 2.2, so that crushing treatment is carried out, the spiral plates 11 and the convex edges 11.1 can uniformly distribute the paint in the length direction, namely, in the process that the second cylinder 10 and the spiral plates 11 drive the paint particles accumulated at the bottom in the second cylinder 10 and close to the position of the annular plate 8 to rotate and rise, the accumulated paint particles are higher than the convex edges 11.1 and roll down along the length direction of the spiral plates 11, so that the paint particles are far away from the annular plate 8, the paint particles are uniformly distributed on the spiral plates 11, and then when the paint particles on the spiral plates 11 rise to the position above the crushing unit, the coating material can uniformly fall between two crushing sections 2.2 in the axial direction of the crushing unit, the crushed coating material is fully crushed and then is conveyed to the discharging opening 13.1 by the rotating second helical blade 14 for discharging. In fig. 9, 11-12, the spiral plate 11, the first spiral blade 5 and the stacked spiral blade are left-handed in the right-to-left view, and the screen cylinder 3, the first spiral blade 5, the annular plate 8, the spiral plate 11, the second cylinder 10 and the second spiral blade 14 are all rotated counterclockwise.
As a preferred technical solution of this embodiment, two first coamings 19 are disposed between the first end plate 6 and the partition 9, the two first coamings 19 are located above the crushing sections 2.1 of the rotating roller 2, the two first coamings 19 form an inverted "eight" shape, the sheet material to be crushed is gathered between the two crushing sections 2.1, two second coamings 20 are disposed between the second end plate 13 and the partition 9, the two second coamings 20 are located above the crushing sections 2.2 of the rotating roller 2, the two second coamings 20 form an inverted "eight" shape, and the coating particles to be crushed are gathered between the two crushing sections 2.2. Optionally, the dual-roller multistage crushing mechanism further comprises a first driving assembly 16, and the first driving assembly 16 is used for driving the two rotating rollers 2 to rotate in opposite directions and driving the screen drum 3 to rotate. Specifically, the first driving assembly 16 includes a first driving unit and a second driving unit, where the first driving unit drives the two rotating rollers 2 to rotate in opposite directions, the second driving unit drives the screen drum 3 to rotate, and the first driving unit and the second driving unit are both motors.
In another embodiment provided by the present application, the first drive assembly 16 comprises: the device comprises a servo motor 16.2, a second gear 16.3, a first annular gear 16.4 and two first gears 16.1, wherein the two first gears 16.1 are respectively and fixedly connected with the central shaft of one rotating roller 2 in a coaxial mode, the two first gears 16.1 are meshed with each other, the servo motor 16.2 is fixedly arranged on a frame 1, a power output shaft of the servo motor 16.2 is fixedly connected with any central shaft in a coaxial mode, further, the power output shaft of the servo motor 16.2 drives the central shaft through a speed reducer, the second gear 16.3 is rotatably arranged on the frame 1, the second gear 16.3 is meshed with any first gear 16.1, and the first annular gear 16.4 is fixedly connected to the end face of a screen drum 3 in a coaxial mode and meshed with the second gear 16.3. The servo motor 16.2 drives one of the first gears 16.1 to rotate, the first gear 16.1 drives the other first gear 16.1 to reversely rotate, so that the two rotating rollers 2 reversely rotate, the meshed crushing teeth and the meshed crushing teeth can crush and crush materials, the second gear 16.3 is driven by the first gear 16.1 meshed with the second gear 16.3 to rotate, then the second gear 16.3 drives the first annular gear 16.4 to rotate, and the first annular gear drives the screen drum 3 to rotate.
In order to avoid insufficient screening of the paint particles in the rotating screen drum 3 in the embodiment during the lifting process, in still another embodiment provided by the application, each arc-shaped plate 4 is an arc-shaped screen, each arc-shaped plate 4 is respectively provided with a screening aid assembly 17, each screening aid assembly 17 comprises a shaft rod 17.1, a third gear 17.3 and a second annular gear 17.4, wherein the shaft rod 17.1 is rotatably connected to the annular plate 8, a plurality of shifting plates 17.2 are fixedly connected to the shaft rod 17.1, the third gear 17.3 is coaxially and fixedly connected to one end of the shaft rod 17.1 penetrating through the annular plate 8, the second annular gear 17.4 is coaxially and fixedly connected to the third cylinder 12, and the second annular gear 17.4 is meshed with the third gear 17.3. So, when the screen drum 3 rotates, the paint particles are driven to rise through the arc screen mesh, the paint particles roll down to the inside of the arc screen mesh along the inner wall of the screen drum 3, during which, the paint particles are partially screened out, the annular plate 8 rotates to drive the shaft rod 17.1, each shifting plate 17.2 and the second gear 16.3 of the auxiliary screen assembly 17 to synchronously move, the second gear 16.3 is meshed with the fixed second annular gear 17.4, so that the second gear 16.3, the shaft rod 17.1 and each shifting plate 17.2 rotate, each shifting plate 17.2 shifts the paint particles in the arc screen mesh, so that the paint particles are secondarily screened out, one part of qualified paint with small granularity in the secondarily screened paint particles is directly screened out from the screen drum 3 above the corresponding arc screen mesh, the other part of the qualified paint particles falls down to the inner wall of the screen drum 3 below the arc screen mesh, the rest part of the qualified paint particles directly passes through the inner wall of the screen drum 3 and falls into the first drum 7 along the inner wall of the corresponding to the screen drum 3, and the rest part of the paint particles fall into the drum 7, and the secondary screening effect is fully screened out.
Because the screen drum 3 and the first cylinder 7 are arranged, the application can not feed materials from the right upper part of the crushing unit like a traditional crusher, so as to be a preferable technical scheme of the application, the feeding component 15 can feed materials from the side surface above the crushing unit, in particular, the feeding component 15 comprises a feeding groove 15.1, a pushing plate 15.4, a connecting rod 15.5, a supporting plate 15.6, a guide rail 15.7 and a sliding column 15.8, wherein the feeding groove 15.1 is fixedly arranged on the first end plate 6, the feeding groove 15.1 comprises a horizontal bottom plate, two sides of the bottom plate are respectively provided with side plates, the two side plates are vertical or inclined in an inverted-eight shape, the cross section of the feeding groove 15.1 is approximately U-shaped, the upper part of the first end plate 6 is provided with a feeding opening 15.2, the shape of the feeding opening 15.2 is matched with the cross section of the feeding groove 15.1, the feeding groove 15.1 can enter the feeding opening 15.2, one end of the feeding groove 15.1 is provided with a limiting plate 15.3, the other end is communicated with the inside of the screen cylinder 3 through a feeding hole 15.2, a pushing plate 15.4 is arranged in a feeding groove 15.1 in a sliding way, the sliding direction is parallel to the axial direction of the crushing section 2.1, a first station which is jointed with a limiting plate 15.3 is arranged on the sliding stroke of the pushing plate 15.4, a second station which is positioned at the feeding hole 15.2, one end of a connecting rod 15.5 is fixedly connected with the bottom of the stacking plate, one end of a supporting plate 15.6 which is far away from the pushing plate 15.4 is rotatably connected with one end of the connecting rod 15.5 which is far away from the pushing plate 15.4, when the supporting plate 15.6 rotates to the horizontal direction, a limiting structure which limits the continuous downward rotation of the supporting plate 15.6 is arranged between the supporting plate 15.6 and the connecting rod 15.5, the limiting structure is a limiting block or a crosspiece, when the pushing plate 15.4 is positioned at the first station, the supporting plate 15.6 is horizontally jointed at the bottom of the feeding groove 15.1, at the moment, a space and a gap are arranged between the supporting plate 15.6 and the pushing plate 15.4, a guide rail is fixedly connected on the 9, the guide rail 15.7 comprises a straight section 15.71 and an inclined guide section 15.72, the sliding column 15.8 is fixedly connected or rotatably connected on the material supporting plate 15.6, and in the process that the material pushing plate 15.4 slides to the second station, the sliding column 15.8 slides up the straight section 15.71 through the guide section 15.72 so as to enable the material supporting plate 15.6 to rotate and incline. The feeding assembly 15 further comprises a second driving assembly 18, the second driving assembly 18 is used for driving the pushing plate 15.4 to slide, preferably, the second driving assembly 18 comprises a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixedly arranged on the frame 1, and an open end of a hydraulic rod of the hydraulic cylinder is fixedly connected with the pushing plate 15.4 through a connecting rod 18.1.
In the technical scheme, firstly, the material pushing plate 15.4 is positioned at the first station through the second driving component 18, at the moment, the material supporting plate 15.6 is horizontally arranged at the bottom of the material feeding groove 15.1, the material supporting plate 15.6 is positioned at a section of the material feeding groove 15.1, which is close to the material feeding opening 15.2, a gap is reserved between the material supporting plate 15.6 and the material pushing plate 15.4, sheets to be crushed are conveyed into the material feeding groove 15.1, the sheets are accumulated on the material supporting plate 15.6 and on the gap of the material feeding groove 15.1, then the material pushing plate 15.4 is driven to slide towards the material feeding opening 15.2 through the second driving component 18, the material supporting plate 15.4 drives the material supporting plate 15.6 to synchronously slide through the connecting rod 15.5, the sheets on the material supporting plate 15.6 are driven to move towards the inside of the screen drum 3, the sheets in the gap on the material supporting plate 15.1 are pushed to move towards the inside of the screen drum 3, the sheets in the gap fall into the section of the screen drum 3, the section of the screen 2.1, which is close to the material feeding opening 15.2 and the sheet is simultaneously driven into the crushing unit 15.6 through the material supporting plate 15.4, the slide column 15.8 on the material supporting plate 15.6 contacts the inclined surface of the guiding section 15.72 and slides up the straight section 15.71, so that the material supporting plate 15.6 rotates and inclines, one end of the material supporting plate 15.6 close to the material loading opening 15.2 is lifted, the sheet material on the material supporting plate 15.6 gradually slides onto one section of the crushing unit far away from the material loading opening 15.2 and is crushed by the crushing unit, the sheet material on the inclined material supporting plate 15.6 also gradually slides onto the position of the crushing unit which is more and more far away from the material loading opening 15.2 along with the sliding of the material supporting plate 15.6, the interval between the material loading grooves 15.1 and the sheet material on the material supporting plate 15.6 uniformly fall between the two crushing sections 2.1 along the length direction of the crushing sections 2.1, the material loading is uniform, the material loading is beneficial to improving the crushing effect until the material pushing plate 15.4 slides to the second station, the sheet material on the inclined material supporting plate 15.6 is completely slid to the position of the second driving component 18, the sheet material pushing plate 15.4 is pushed back to the first station, the slide column 15.8 is separated from the guide rail 15.7, and the material supporting plate 15.6 is rotated and reset to a horizontal state. The feeding component 15 in the technical scheme realizes that the sheet material uniformly falls onto the crushing unit under the condition of feeding from the side surface above the crushing unit, and the feeding is uniform, thereby being beneficial to improving the crushing effect.
The application also provides a preparation method of the thermosetting fluorine modified powder coating, which comprises the following steps: s1: introducing the raw materials of the thermosetting fluorine modified powder coating into a bucket overturning type automatic mixer for mixing and dissolving to form a mixed material; s2: extruding the mixed material through a reciprocating damping type single screw extruder to obtain a further uniformly dispersed molten coating, wherein the temperature of the front section of the mixed material in the reciprocating damping type single screw extruder is 100+/-5 ℃, the temperature of the middle section of the mixed material in the reciprocating damping type single screw extruder is 105+/-5 ℃, and the temperature of the tail section of the mixed material in the reciprocating damping type single screw extruder is 110+/-5 ℃; s3: the molten coating is flaked and cooled to obtain flakes; s4: crushing the flaky paint by a double-roller multistage crushing mechanism to obtain coarse material; s5: grinding the coarse material by a double-separation ACM mill, wherein the main mill is 48-50HZ, and the auxiliary mill is 23-25HZ to obtain the thermosetting fluorine modified powder coating; s6: the thermosetting fluorine modified powder coating in S5 was tested using a dry powder particle size distribution meter test.
As a preferred technical scheme of the embodiment, the thermosetting fluorine modified powder coating comprises the following raw materials in parts by weight: 50% -52% of SJ4ET outdoor polyester, 8% -10% of F750H fluororesin, 4% -5% of curing agent, 1.5% -2.5% of auxiliary agent, 19.5% -23% of weather-resistant pigment and 8% -11% of filler.
As a further preferable technical scheme of the embodiment, 52 parts by weight of SJ4ET outdoor polyester; F750H fluororesin 10 parts by weight; 5 parts by weight of a curing agent, wherein the curing agent comprises 3.8 parts by weight of a TGIC curing agent and 1.2 parts by weight of a B1530 curing agent; 2.2 parts of auxiliary agent, wherein the auxiliary agent comprises 1 part by weight of 588 leveling agent, 0.4 part by weight of degasifying agent, 0.2 part by weight of hardening wax and 0.6 part by weight of defoaming agent; 20.3 parts of weather-resistant pigment, wherein the weather-resistant pigment comprises 20 parts of super weather-resistant titanium dioxide and 0.3 part of organic pigment, and the temperature resistance reaches more than 220 ℃; 10.5 parts of filler, wherein the filler is microencapsulated wollastonite.
The thermosetting fluorine modified powder coating prepared by the application has balanced properties of flexibility, hardness, adhesive force and the like, has very good acid rain resistance, ozone resistance, ultraviolet light resistance and chemical property, has good adhesive force to metal substrates, good powder distribution property and strong pollution resistance, has outdoor weather resistance up to 15-20 years, and is particularly suitable for coastal areas and areas with severe high-altitude weather.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (9)
1. The preparation equipment of thermosetting fluorine modified powder coating is characterized by comprising a double-roller multistage crushing mechanism, wherein the double-roller multistage crushing mechanism comprises:
a frame;
the two rotating rollers are arranged on the frame in a mutually reverse rotation way, each rotating roller comprises a crushing section and a crushing section which are connected, crushing teeth on the two crushing sections are meshed with each other to form a crushing unit, and crushing teeth on the two crushing sections are meshed with each other to form a crushing unit;
the screening cylinder is rotatably arranged on the frame, the screening cylinder is sleeved outside the two crushing sections, a plurality of arc plates distributed in an annular array are arranged on the inner peripheral side of the screening cylinder, the outer peripheral side of the screening cylinder is fixedly connected with a first helical blade, one end of the screening cylinder is rotatably connected with a first end plate, and the two rotating rollers movably penetrate through the first end plate;
the first cylinder is fixedly arranged on the frame, the first cylinder is sleeved outside the screen cylinder, and the outer sides of the first spiral blades are movably attached to the inner wall of the first cylinder;
the annular plate is fixedly connected to the end face of the screen cylinder, the inner peripheral side of the annular plate is rotationally connected with a partition plate, the two rotating rollers movably penetrate through the partition plate, and the partition plate is positioned at the junction of the crushing section and the crushing section of the rotating rollers;
the second cylinder is rotationally arranged on the first cylinder, a plurality of spiral plates distributed in an annular array are fixedly connected to the inner wall of the second cylinder, one side, away from the second cylinder, of each spiral plate is fixedly connected with the screen cylinder, and a plurality of parallel ribs are arranged on each spiral plate;
the third cylinder is fixedly connected to the frame, is rotationally connected with the second cylinder, one end of the third cylinder is rotationally connected with the annular plate, the top of the cylinder body of the third cylinder is provided with a blanking port, the blanking port is positioned above the space between the two crushing sections, one end of the third cylinder, which is far away from the annular plate, is fixedly connected with a second end plate, and the bottom of the second end plate is provided with a blanking port;
one end of the second spiral blade is fixedly connected to the annular plate, and the outer side of the second spiral blade is movably attached to the inner wall of the third cylinder;
and the feeding assembly is used for guiding the materials to be crushed to the upper part between the two crushing sections.
2. The apparatus of claim 1, wherein the dual roll multi stage crushing mechanism further comprises a first drive assembly for driving the two rotating rolls in counter-rotation with each other and for driving the screen drum in rotation.
3. The manufacturing apparatus of claim 2, wherein the first drive assembly comprises:
the two first gears are coaxially and fixedly connected with the central shaft of one rotating roller respectively, and are meshed with each other;
the servo motor is fixedly arranged on the frame, and a power output shaft of the servo motor is coaxially and fixedly connected with any central shaft;
the second gear is rotatably arranged on the frame and meshed with any one of the first gears;
the first annular gear is coaxially and fixedly connected to the end face of the screen cylinder and meshed with the second gear.
4. The apparatus of claim 1 wherein each arcuate panel is an arcuate screen, each arcuate panel having a screen assist assembly disposed therein, each screen assist assembly comprising:
the shaft lever is rotationally connected to the annular plate, and a plurality of poking plates are fixedly connected to the shaft lever;
the third gear is coaxially and fixedly connected to one end of the shaft rod penetrating through the annular plate;
and the second annular gear is coaxially and fixedly connected to the third cylinder and meshed with the third gear.
5. The manufacturing apparatus of claim 1, wherein the loading assembly comprises:
the feeding groove is fixedly arranged on the first end plate, a feeding opening is formed in the upper portion of the first end plate, one end of the feeding groove is provided with a limiting plate, and the other end of the feeding groove is communicated with the inside of the screen cylinder through the feeding opening;
the pushing plate is arranged in the feeding groove in a sliding way, and a first station attached to the limiting plate and a second station positioned at the feeding opening are arranged on the sliding stroke of the pushing plate;
the connecting rod is fixedly connected with the bottom of the stacking plate;
the end part of the material supporting plate is rotationally connected with one end of the connecting rod, which is far away from the material stacking plate, and when the material pushing plate is at the first station, the material supporting plate is horizontally attached to the bottom of the material feeding groove, and a space is reserved between the supporting plate and the material pushing plate;
the guide rail is fixedly connected to the partition plate and comprises a straight section and an inclined guide section;
and the sliding column is fixedly connected to the material supporting plate, and the sliding column slides up the straight section through the guide section in the process that the material pushing plate slides to the second station so as to enable the material supporting plate to rotate and incline.
6. The apparatus of claim 5, wherein the loading assembly further comprises a second drive assembly, the second drive assembly configured to drive the pusher plate to slide.
7. The apparatus of claim 6, wherein the second driving assembly comprises a hydraulic cylinder, a cylinder body of the hydraulic cylinder is fixedly mounted on the frame, and an open end of a hydraulic rod of the hydraulic cylinder is fixedly connected with the pushing plate through a connecting rod.
8. The manufacturing apparatus according to claim 1, wherein two first coamings are provided between the first end plate and the partition plate, each of the two first coamings being located above one of the rotating rollers.
9. A method for preparing a thermosetting fluorine-modified powder coating, characterized in that the preparation method is carried out on the basis of a preparation device according to any one of claims 1 to 8, the preparation method comprising the following steps:
s1: introducing the raw materials of the thermosetting fluorine modified powder coating into a bucket overturning type automatic mixer for mixing and dissolving to form a mixed material;
s2: the mixed material is extruded by a reciprocating damping type single screw extruder to obtain a further uniformly dispersed molten coating, the temperature of the front section of the mixed material in the reciprocating damping type single screw extruder is 100+/-5 ℃, the temperature of the middle section of the mixed material in the reciprocating damping type single screw extruder is 105+/-5 ℃, and the temperature of the tail section of the mixed material in the reciprocating damping type single screw extruder is 110+/-5 ℃;
s3: the molten coating is flaked and cooled to obtain flaky coating;
s4: crushing the flaky paint by a double-roller multistage crushing mechanism to obtain coarse material;
s5: grinding the coarse material by a double-separation ACM mill, wherein the main mill is 48-50HZ, and the auxiliary mill is 23-25HZ to obtain a thermosetting fluorine modified powder coating;
s6: the thermosetting fluorine modified powder coating in S5 was tested using a dry powder particle size distribution meter test.
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| CN117427719B (en) * | 2023-10-24 | 2024-04-16 | 浙江恒合瑞建设工程有限公司 | Efficient production device for asphalt waste powder for municipal road and application method |
| CN117380332B (en) * | 2023-12-13 | 2024-02-02 | 榆林天盛缘玻璃纤维科技有限公司 | Kaolin crushing device for glass fiber production |
| CN117816338B (en) * | 2024-03-06 | 2024-05-10 | 蒲城毅力金属铸造材料有限公司 | Particle size-controllable spheroidizer crushing device and method |
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