CN112808137A - Preparation method of polyurethane coating - Google Patents

Preparation method of polyurethane coating Download PDF

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Publication number
CN112808137A
CN112808137A CN202110012282.7A CN202110012282A CN112808137A CN 112808137 A CN112808137 A CN 112808137A CN 202110012282 A CN202110012282 A CN 202110012282A CN 112808137 A CN112808137 A CN 112808137A
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China
Prior art keywords
plate
cylindrical
polyurethane
uniformly
grinding
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CN202110012282.7A
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Chinese (zh)
Inventor
李腾飞
罗细池
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Individual
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Individual
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Priority to CN202110012282.7A priority Critical patent/CN112808137A/en
Publication of CN112808137A publication Critical patent/CN112808137A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/83Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B01F33/8305Devices with one shaft, provided with mixing and milling tools, e.g. using balls or rollers as working tools; Devices with two or more tools rotating about the same axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50Mixing liquids with solids
    • B01F23/53Mixing liquids with solids using driven stirrers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/836Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83613Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10Maintenance of mixers
    • B01F35/12Maintenance of mixers using mechanical means
    • B01F35/123Maintenance of mixers using mechanical means using scrapers for cleaning mixers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/181Preventing generation of dust or dirt; Sieves; Filters
    • B01F35/188Preventing generation of dust or dirt; Sieves; Filters using sieves in mixers for purposes other than mixing, e.g. eliminating dust during venting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90Heating or cooling systems
    • B01F35/92Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90Heating or cooling systems
    • B01F2035/99Heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/30Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

The invention relates to a preparation method of polyurethane coating, which comprises a workbench, a preparation device and a heating device, wherein the upper end of the workbench is fixedly provided with the preparation device, the left end of the preparation device is fixedly provided with the heating device, the preparation device comprises a heat insulation plate, a cylinder plate, a feeding pipe, a first motor, a rotating column, a grinding frame, a screening plate, a stirring frame, a screening circular plate, a conical cylinder and a discharging pipe, the pigment is ground by the preparation device, the pigment, the mixed emulsion of the polyurethane and an auxiliary agent are stirred and mixed at the same time, the mixed emulsion is screened to prevent the pigment from being accumulated, the polyurethane and the auxiliary agent are heated by the heating device, the heated mixture is screened to prevent solid polyurethane from entering the preparation device along with liquid polyurethane, affecting the production quality.

Description

Preparation method of polyurethane coating
Technical Field
The invention relates to the field of paint preparation, in particular to a preparation method of a polyurethane paint.
Background
The polyurethane coating generally consists of polyisocyanate prepolymer, active hydrogen-containing compound and resin, catalyst and other auxiliary agents, is generally called as a curing agent component and a main agent component, has wide application range, generally has good mechanical properties, higher solid content and better performances in all aspects, is a coating variety with development prospect, is mainly applied to woodenware coating, automobile repair coating, anticorrosive coating, floor paint, electronic coating, special coating, polyurethane waterproof coating and the like, and has the defects of complex construction process, high requirement on construction environment and easy generation of defects of a paint film.
In the preparation of polyurethane coatings, due to the structural limitations of polyurethane, there are the following problems in the practical operation:
(1) when traditional polyurethane coating preparation equipment is processed polyurethane, directly carry out heat treatment to it simultaneously to lead to having solid polyurethane granule in the liquid polyurethane, thereby influence subsequent production and processing.
(2) When the traditional polyurethane coating preparation equipment is used for processing polyurethane, the pigment, the polyurethane and the mixed emulsion of the auxiliary agent need to be mixed, so that the pigment is easily accumulated into a group, and the production quality of the equipment is reduced.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides a preparation method of a polyurethane coating.
The technical scheme adopted by the invention to solve the technical problem is as follows: a preparation method of polyurethane coating uses a polyurethane coating preparation device, the polyurethane coating preparation device comprises a workbench, a preparation device and a heating device, and the concrete method when the polyurethane coating preparation device is adopted to prepare the polyurethane coating is as follows:
s1, introducing raw materials: introducing polyurethane and an auxiliary agent into the cylindrical barrel through the feeding hopper for heating;
s2, transportation raw materials: transporting the completely heated raw materials to the right, and introducing the raw materials into a cylindrical plate;
s3, introducing a pigment: introducing the pigment into the cylindrical plate through the feeding pipe, driving the grinding frame to grind the pigment through the first motor, and screening the pigment;
s4, stirring and sieving: uniformly stirring the screened pigment powder, the completely melted polyurethane and the auxiliary agent through a stirring frame, and screening the stirred polyurethane coating;
s5, outputting a coating: outputting the screened polyurethane coating to equipment;
the upper end of the workbench is fixedly provided with a preparation device, and the left end of the preparation device is fixedly provided with a heating device;
the preparation device comprises a heat insulation plate, a cylindrical plate, a feeding pipe, a first motor, a rotating column, a grinding frame, a screening plate, a stirring frame, a screening circular plate, a conical cylinder and a discharging pipe, wherein the heat insulation plate is fixedly arranged at the upper end of a workbench, the cylindrical plate is fixedly arranged at the inner end of the heat insulation plate, the feeding pipe is fixedly arranged at the upper end of the left side of the cylindrical plate, the first motor is fixedly arranged at the middle part of the upper end of the heat insulation plate through a motor base, the rotating column is fixedly arranged at an output shaft of the first motor through a coupler, the grinding frame is fixedly arranged at the upper side of the rotating column, the screening plate is fixedly arranged at the inner end of the cylindrical plate, which is positioned at the lower side of the grinding frame, the stirring frame is uniformly and fixedly arranged at; fix the drum board through the heated board, fix the inlet pipe through the drum board, it rotates to rotate the post to drive through the motor, drive through rotating the post and grind frame and the rotation of agitator frame, thereby grind pigment, stir pigment powder and polyurethane emulsion after grinding simultaneously, through sieving the board to sieving the pigment after grinding, through sieving the plectane to sieving the mixture after even stirring mixes, prevent that the great pigment of volume in the mixing process from combining the piece that becomes with the emulsion and passing through discharging pipe discharge apparatus and being collected, thereby influence the quality of coating.
The heating device comprises a cylindrical barrel, a heating barrel, a heat preservation barrel, a second motor, a spiral rod, a spiral belt, a scraping column, a material leaking circular plate and a feeding hopper, wherein the cylindrical barrel is fixedly installed at the left end of the lower side of the screening plate of the cylindrical plate, the heating barrel is fixedly installed at the outer end of the cylindrical barrel, the lower end of the heating barrel is fixedly connected with the workbench through a support plate, the heat preservation barrel is fixedly installed at the outer end of the heating barrel, the second motor is fixedly installed at the left end of the heat preservation barrel through a motor base, the spiral rod is fixedly installed at the output shaft of the second motor through a coupler, the spiral belt is fixedly installed at the outer end of the spiral rod, the scraping column is uniformly and circumferentially and fixedly installed at the outer end surface of the spiral belt through a pin shaft, arc long grooves are uniformly formed in the outer end; fix the cartridge heater through a cylinder section of thick bamboo, fix a heat preservation section of thick bamboo through the cartridge heater, heat through the cartridge heater in to the cylinder section of thick bamboo keeps warm, fix motor two through a heat preservation section of thick bamboo simultaneously, it rotates to drive the hob through motor two, thereby it rotates to drive the spiral shell area, thereby transport the polyurethane after melting, fix a position scraping the material post through the spiral shell area, strike off the adnexed polyurethane of cylinder section of thick bamboo inner wall through scraping the material post, thereby improve equipment's machining efficiency, filter polyurethane through leaking the material plectane, thereby make the polyurethane after melting transport right through leaking the material plectane, so as to prevent that the polyurethane granule of not complete melting gets into preparation facilities along with liquid polyurethane, let in a cylinder section of thick bamboo with the raw materials through feed hopper.
As a preferred technical scheme of the invention, the inner end surface of the cylindrical plate is positioned outside the grinding frame and is uniformly and fixedly provided with an annular plate matched with the grinding frame, and the inner end surface of the annular plate is rough; the pigment is ground by matching the annular plate with the rough inner end surface with the grinding frame.
As a preferred technical scheme of the invention, the grinding frame comprises a circular table plate, a toothed ring, a grinding column and grinding balls, wherein the circular table plate is fixedly installed on the upper side of a rotating column, the toothed ring is uniformly and fixedly installed on the outer end surface of the circular table plate, the grinding column is uniformly and fixedly installed on the outer end surface of the toothed ring along the circumferential direction through a pin shaft, and the grinding balls are uniformly connected on the outer end surface of the grinding column along the circumferential direction in a sliding fit manner; the toothed ring is fixed through the circular table plate, the grinding column is positioned through the toothed ring, the grinding ball is positioned through the grinding column, and the grinding column is matched with the grinding ball, so that the friction force applied to the toothed ring is uniform, and the service life of the toothed ring is prolonged.
According to a preferred technical scheme, the screening plate comprises a fixed cylinder, a circular ring plate, a cylindrical spring and a circular ring leakage plate, wherein the inner end of the circular ring plate is positioned at the lower side of the grinding frame and is fixedly provided with the fixed cylinder, the tail end of the fixed cylinder is fixedly provided with the circular ring plate, the upper end of the fixed cylinder is uniformly and fixedly provided with the cylindrical spring along the circumferential direction, the upper end of the cylindrical spring is fixedly provided with the circular ring leakage plate, and the outer side of the circular ring leakage plate is uniformly provided with small circular ring through holes along the circumferential direction; fix the ring board through the fixation cylinder, fix fixation cylinder through the ring board, fix cylindrical spring through fixation cylinder, fix the ring bushing through cylindrical spring, ring bushing and cylindrical spring through seting up little cylinder through-hole cooperate, when pigment powder drops to the ring bushing on, the ring bushing receives pigment powder's impact force downstream with cylindrical spring, when pigment powder drops on the ring bushing completely, cylindrical spring produces a reverse effort to the ring bushing, thereby make ring bushing up-motion, in order to reach the mesh of carrying out vibration screening to pigment powder, thereby make qualified pigment powder drop smoothly.
As a preferred technical scheme of the invention, the stirring frame comprises an inclined rod, a stirring rod and an arc-shaped scraper, the outer end surface of the lower side of the rotating column is uniformly and fixedly provided with the inclined rod along the circumferential direction, the outer end surface of the inclined rod is uniformly and fixedly provided with the stirring rod along the circumferential direction, the tail end of the inclined rod is fixedly provided with the arc-shaped scraper, and the outer end surface of the arc-shaped scraper is uniformly provided with large arc-shaped grooves along the circumferential direction; fix puddler and arc scraper blade through the tilting lever, cooperate through tilting lever and puddler and stir polyurethane emulsion and pigment powder, strike off drum inboard wall adnexed polyurethane emulsion and pigment powder through the arc scraper blade of seting up big arc recess.
According to a preferred technical scheme, the screening circular plate comprises a plate body, a hemispherical block, a stop block, a connecting long rod, a control plate and a control rod, wherein the plate body is fixedly arranged at the lower side of the stirring frame at the inner end of the cylindrical plate, cylindrical through holes are uniformly formed in the plate body along the circumferential direction, the hemispherical block is fixedly arranged in each cylindrical through hole through a rotating shaft, the stop block is fixedly arranged at the right end of the inner side of each cylindrical through hole, the connecting long rod is fixedly arranged at the rear end of the rotating shaft through a pin shaft, the control plate is fixedly arranged at the right end of the connecting; the hemisphere blocks are positioned through the plate body, the opening and closing of the cylindrical through holes in the hemisphere block control plate body are realized, the hemisphere blocks are controlled to rotate through the long connecting rod, and the hemisphere blocks are controlled to rotate through the control plate and the control rod.
As a preferred technical scheme of the invention, the outer end of the screw rod is uniformly and fixedly provided with an extrusion spring along the circumferential direction, and the tail end of the extrusion spring is fixedly provided with an extrusion block; the extrusion block is fixed through the extrusion spring, and the polyurethane particles are extruded through the matching of the extrusion spring and the extrusion block, so that the polyurethane particles are in close contact with the cylindrical barrel.
As a preferred technical scheme of the invention, the material leakage circular plate is uniformly connected with rolling beads in a sliding fit manner along the circumferential direction; the liquid and solid polyurethane is sieved by rolling beads.
Compared with the prior art, the invention has the following advantages:
1. according to the preparation method of the polyurethane coating, provided by the invention, the pigment is ground by the preparation device, the pigment, the mixed emulsion of the polyurethane and the auxiliary agent are stirred and mixed, and are screened to prevent the pigment from being accumulated, the polyurethane and the auxiliary agent are heated by the heating device, and the heated mixture is screened to prevent the solid polyurethane from entering the preparation device along with the liquid polyurethane, so that the production quality is prevented from being influenced.
2. According to the invention, through the arranged preparation device, the toothed ring is fixed through the circular table plate, the grinding column is positioned through the toothed ring, the grinding ball is positioned through the grinding column, and the grinding column is matched with the grinding ball, so that the friction force applied to the toothed ring is uniform, and the service life of the toothed ring is prolonged.
3. According to the invention, through the arranged preparation device, the circular ring bushing plate provided with the small cylindrical through hole is matched with the cylindrical spring, when pigment powder falls onto the circular ring bushing plate, the circular ring bushing plate and the cylindrical spring move downwards under the impact force of the pigment powder, and when the pigment powder completely falls onto the circular ring bushing plate, the cylindrical spring generates a reverse acting force on the circular ring bushing plate, so that the circular ring bushing plate moves upwards, the aim of vibrating and screening the pigment powder is fulfilled, and the qualified pigment powder can smoothly fall.
4. According to the invention, through the arranged preparation device, the polyurethane emulsion and the pigment powder are stirred through the matching of the inclined rod and the stirring rod, the polyurethane emulsion and the pigment powder attached to the inner wall of the cylindrical plate are scraped through the arc-shaped scraper provided with the large arc-shaped groove, the opening and closing of the cylindrical through hole on the plate body are controlled through the hemispherical block, the rotation of the hemispherical block is controlled through the long connecting rod, and the rotation of the hemispherical block is controlled through the matching of the control plate and the control rod.
5. The extrusion block is fixed through the extrusion spring through the arranged heating device, polyurethane particles are extruded through the matching of the extrusion spring and the extrusion block, so that the polyurethane particles are in close contact with the cylindrical barrel, and liquid and solid polyurethane is screened through the rolling balls.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic workflow diagram of the present invention;
FIG. 2 is a schematic plan view of the present invention in front elevation;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 of the present invention;
FIG. 4 is an enlarged view of a portion of the present invention at N of FIG. 2;
FIG. 5 is an enlarged fragmentary view of the invention at M of FIG. 2;
FIG. 6 is an enlarged fragmentary view of the invention at E of FIG. 2;
FIG. 7 is an enlarged fragmentary view of the invention at F of FIG. 2;
fig. 8 is a partial enlarged view of the present invention at H of fig. 3.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained with reference to fig. 1 to 8.
A preparation method of polyurethane paint uses polyurethane paint preparation equipment which comprises a workbench 1, a preparation device 2 and a heating device 3, and the concrete method for preparing the polyurethane paint by adopting the polyurethane paint preparation equipment is as follows:
s1, introducing raw materials: introducing polyurethane and an auxiliary agent into the cylindrical barrel 31 through the feeding hopper 39 for heating;
s2, transportation raw materials: transporting the completely heated raw material to the right, thereby introducing the cylindrical plate 21;
s3, introducing a pigment: pigment is introduced into the cylindrical plate 21 through a feeding pipe 22, and is ground and sieved by a grinding frame 25 driven by a first motor 23;
s4, stirring and sieving: uniformly stirring the screened pigment powder, the completely melted polyurethane and the auxiliary agent through a stirring frame 27, and screening the stirred polyurethane coating;
s5, outputting a coating: outputting the screened polyurethane coating to equipment;
the upper end of the workbench 1 is fixedly provided with a preparation device 2, and the left end of the preparation device 2 is fixedly provided with a heating device 3;
the preparation device 2 comprises a heat insulation plate 20, a cylindrical plate 21, a feeding pipe 22, a first motor 23, a rotating column 24, a grinding frame 25, a screening plate 26, a stirring frame 27, a screening circular plate 28, a conical cylinder 29 and a discharging pipe 30, the heat insulation plate 20 is fixedly installed at the upper end of the workbench 1, and the cylindrical plate 21 is fixedly installed at the inner end of the heat insulation plate 20; the inner end face of the cylindrical plate 21 is positioned outside the grinding rack 25 and is uniformly and fixedly provided with an annular plate matched with the grinding rack 25, and the inner end face of the annular plate is rough; the upper end of the left side of the cylindrical plate 21 is fixedly provided with a feeding pipe 22, the middle part of the upper end of the heat insulation plate 20 is fixedly provided with a motor I23 through a motor base, an output shaft of the motor I23 is fixedly provided with a rotating column 24 through a coupler, and the upper side of the rotating column 24 is fixedly provided with a grinding frame 25; the grinding frame 25 comprises a circular table plate 251, a toothed ring 252, grinding columns 253 and grinding balls 254, the circular table plate 251 is fixedly installed on the upper side of the rotating column 24, the toothed ring 252 is uniformly and fixedly installed on the outer end face of the circular table plate 251, the grinding columns 253 are uniformly and fixedly installed on the outer end face of the toothed ring 252 along the circumferential direction through pin shafts, and the grinding balls 254 are uniformly connected on the outer end face of the grinding columns 253 along the circumferential direction in a sliding fit manner; a screening plate 26 is fixedly arranged at the inner end of the cylindrical plate 21 and positioned at the lower side of the grinding frame 25, and a stirring frame 27 is uniformly and fixedly arranged on the outer end surface of the lower side of the rotating column 24 along the circumferential direction; the stirring frame 27 comprises an inclined rod 271, a stirring rod 272 and an arc-shaped scraping plate 273, the inclined rod 271 is uniformly and fixedly installed on the outer end surface of the lower side of the rotating column 24 along the circumferential direction, the stirring rod 272 is uniformly and fixedly installed on the outer end surface of the inclined rod 271 along the circumferential direction, the arc-shaped scraping plate 273 is fixedly installed at the tail end of the inclined rod 271, and large arc-shaped grooves are uniformly formed on the outer end surface of the arc-shaped scraping plate 273 along the circumferential; a screening circular plate 28 is fixedly arranged at the inner end of the cylindrical plate 21 and positioned at the lower side of the stirring frame 27; the screening circular plate 28 comprises a plate body 281, hemispherical blocks 282, stop blocks 283, a connecting long rod 284, a control plate 285 and a control rod 286, the inner end of the cylindrical plate 21 is positioned at the lower side of the stirring frame 27 and is fixedly provided with the plate body 281, cylindrical through holes are uniformly formed in the plate body 281 along the circumferential direction, the hemispherical blocks 282 are fixedly arranged in the cylindrical through holes through rotating shafts, the stop blocks 283 are fixedly arranged at the right end of the inner side of each cylindrical through hole, the connecting long rod 284 is fixedly arranged at the rear end of each rotating shaft through a pin shaft, the control plate 285 is fixedly arranged at the right end of each connecting long rod; the lower end of the screening circular plate 28 is fixedly provided with a conical barrel 29, and the lower end of the middle part of the conical barrel 29 is fixedly provided with a discharge pipe 30; the cylindrical plate 21 is fixed through the heat insulation plate 20, and the feeding pipe 22 is fixed through the cylindrical plate 21; the pigment is ground by matching the annular plate with the rough inner end surface with the grinding frame 25; the rotating column 24 is driven to rotate through the first motor 23, the grinding frame 25 and the stirring frame 27 are driven to rotate through the rotating column 24, so that the pigment is ground, and ground pigment powder and polyurethane emulsion are stirred at the same time; the toothed ring 252 is fixed through the circular platen 251, the grinding column 253 is positioned through the toothed ring 252, the grinding ball 254 is positioned through the grinding column 253, and the grinding column 253 is matched with the grinding ball 254, so that the friction force applied to the toothed ring 252 is uniform, and the service life of the toothed ring 252 is prolonged; the milled pigment is screened through a screening plate 26; the stirring rod 272 and the arc-shaped scraping plate 273 are fixed through the inclined rod 271, the polyurethane emulsion and the pigment powder are stirred through the cooperation of the inclined rod 271 and the stirring rod 272, and the polyurethane emulsion and the pigment powder attached to the inner wall of the cylindrical plate 21 are scraped through the arc-shaped scraping plate 273 provided with the large arc-shaped groove; the uniformly stirred and mixed mixture is sieved by a sieving circular plate 28, so that a block formed by combining pigment with large volume and emulsion in the mixing process is prevented from being discharged out of the equipment through a discharge pipe 30 and collected, and the quality of the coating is prevented from being influenced; the hemisphere block 282 is positioned through the plate body 281, the control plate 285 of the hemisphere block 282 is opened and closed through a cylindrical through hole in the plate body 281, the hemisphere block 282 is controlled to rotate through the connecting long rod 284, and the control plate 285 is matched with the control rod 286 to control the rotation of the hemisphere block 282.
The screening plate 26 comprises a fixed cylinder 261, an annular plate 262, a cylindrical spring 263 and an annular leakage plate 264, the fixed cylinder 261 is fixedly installed at the inner end of the cylindrical plate 21 and positioned at the lower side of the grinding frame 25, the annular plate 262 is fixedly installed at the tail end of the fixed cylinder 261, the cylindrical spring 263 is uniformly and fixedly installed at the upper end of the fixed cylinder 261 along the circumferential direction, the annular leakage plate 264 is fixedly installed at the upper end of the cylindrical spring 263, and small cylindrical through holes are uniformly formed in the outer side of the annular leakage plate 264 along the circumferential direction; fix ring plate 262 through fixed cylinder 261, fix fixed cylinder 261 through ring plate 262, fix cylindrical spring 263 through fixed cylinder 261, fix ring bushing 264 through cylindrical spring 263, ring bushing 264 and cylindrical spring 263 through seting up little cylindrical through-hole cooperate, when pigment powder drops to ring bushing 264 on, ring bushing 264 and cylindrical spring 263 receive the impact force of pigment powder and thus the downstream, when pigment powder drops completely on ring bushing 264, cylindrical spring 263 produces a reverse effort to ring bushing 264, thereby make ring bushing 264 the upstream, in order to reach the purpose of carrying out vibration screening to pigment powder, thereby make qualified pigment powder drop smoothly.
The heating device 3 comprises a cylindrical barrel 31, a heating barrel 32, a heat preservation barrel 33, a second motor 34, a screw rod 35, a spiral belt 36, a scraping column 37, a material leakage circular plate 38 and a feeding hopper 39, the cylindrical barrel 31 is fixedly installed at the left end of the lower side of the screening plate 26 of the cylindrical plate 21, the heating barrel 32 is fixedly installed at the outer end of the cylindrical barrel 31, the lower end of the heating barrel 32 is fixedly connected with the workbench 1 through a support plate, the heat preservation barrel 33 is fixedly installed at the outer end of the heating barrel 32, the second motor 34 is fixedly installed at the left end of the heat preservation barrel 33 through a motor base, and the screw rod 35 is fixedly installed at an output shaft of the second; extrusion springs are uniformly and fixedly installed at the outer end of the screw rod 35 along the circumferential direction, and extrusion blocks are fixedly installed at the tail ends of the extrusion springs; the outer end of the screw rod 35 is fixedly provided with a screw band 36, the outer end surface of the screw band 36 is uniformly and fixedly provided with a scraping column 37 through a pin shaft along the circumferential direction, the outer end surface of the scraping column 37 is uniformly provided with an arc-shaped long groove along the circumferential direction, and the outer end of the screw rod 35 is uniformly and fixedly provided with a material leakage circular plate 38; the material leakage circular plate 38 is uniformly connected with rolling beads in a sliding fit manner along the circumferential direction; a feeding hopper 39 is fixedly arranged at the upper end of the left side of the cylindrical barrel 31; the heating cylinder 32 is fixed through the cylindrical cylinder 31, the heat-insulating cylinder 33 is fixed through the heating cylinder 32, heat in the cylindrical cylinder 31 is insulated through the heat-insulating cylinder 33, the second motor 34 is fixed through the heat-insulating cylinder 33, the second motor 34 drives the screw rod 35 to rotate, the screw belt 36 is driven to rotate, and the melted polyurethane is transported; the extrusion block is fixed through the extrusion spring, and the polyurethane particles are extruded through the matching of the extrusion spring and the extrusion block, so that the polyurethane particles are tightly contacted with the cylindrical barrel 31; the material scraping column 37 is positioned through the spiral belt 36, polyurethane attached to the inner wall of the cylindrical barrel 31 is scraped through the material scraping column 37, so that the processing efficiency of equipment is improved, the polyurethane is filtered through the material leaking circular plate 38, so that the melted polyurethane is transported rightwards through the material leaking circular plate 38, and polyurethane particles which are not completely melted are prevented from entering the preparation device 2 along with liquid polyurethane; screening liquid polyurethane and solid polyurethane by rolling beads; the feedstock is passed into the cylindrical drum 31 through a feed hopper 39.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A preparation method of polyurethane paint uses a preparation device of polyurethane paint, which comprises a workbench (1), a preparation device (2) and a heating device (3), and is characterized in that: the concrete method for preparing the polyurethane coating by adopting the polyurethane coating preparation equipment comprises the following steps:
s1, introducing raw materials: introducing polyurethane and an auxiliary agent into the cylindrical barrel (31) through a feeding hopper (39) for heating;
s2, transportation raw materials: transporting the completely heated raw material to the right, thereby introducing a cylindrical plate (21);
s3, introducing a pigment: pigment is introduced into the cylindrical plate (21) through a feeding pipe (22), and a grinding frame (25) is driven by a motor I (23) to grind the pigment and sieve the pigment;
s4, stirring and sieving: uniformly stirring the screened pigment powder, the completely melted polyurethane and the auxiliary agent through a stirring frame (27), and screening the stirred polyurethane coating;
s5, outputting a coating: outputting the screened polyurethane coating to equipment;
the upper end of the workbench (1) is fixedly provided with a preparation device (2), and the left end of the preparation device (2) is fixedly provided with a heating device (3);
the preparation device (2) comprises a heat insulation board (20), a cylindrical plate (21), a feeding pipe (22), a first motor (23), a rotating column (24), a grinding frame (25), a screening plate (26), a stirring frame (27), a screening circular plate (28), a conical cylinder (29) and a discharging pipe (30), wherein the heat insulation board (20) is fixedly installed at the upper end of the workbench (1), the cylindrical plate (21) is fixedly installed at the inner end of the heat insulation board (20), the feeding pipe (22) is fixedly installed at the upper end of the left side of the cylindrical plate (21), the first motor (23) is fixedly installed in the middle of the upper end of the heat insulation board (20) through a motor base, the rotating column (24) is fixedly installed on an output shaft of the first motor (23) through a coupler, the grinding frame (25) is fixedly installed at the upper side of the rotating column (24), the screening plate (26) is fixedly installed at the inner end of the cylindrical plate, a screening circular plate (28) is fixedly arranged at the inner end of the cylindrical plate (21) and positioned on the lower side of the stirring frame (27), a conical cylinder (29) is fixedly arranged at the lower end of the screening circular plate (28), and a discharge pipe (30) is fixedly arranged at the lower end of the middle part of the conical cylinder (29);
the heating device (3) comprises a cylindrical barrel (31), a heating barrel (32), a heat-insulating barrel (33), a second motor (34), a screw rod (35), a ribbon (36), a scraping column (37), a material leaking circular plate (38) and a feeding hopper (39), the cylindrical plate (21) is fixedly arranged at the left end of the lower side of the screening plate (26) and is fixedly provided with the cylindrical barrel (31), the outer end of the cylindrical barrel (31) is fixedly provided with the heating barrel (32), the lower end of the heating barrel (32) is fixedly connected with the workbench (1) through a support plate, the outer end of the heating barrel (32) is fixedly provided with the heat-insulating barrel (33), the left end of the heat-insulating barrel (33) is fixedly provided with the second motor (34) through a motor base, an output shaft of the second motor (34) is fixedly provided with the screw rod (35) through a coupler, the outer end of the screw rod (35) is fixedly provided with the ribbon (36), arc-shaped long grooves are uniformly formed in the outer end face of the scraping column (37) along the circumferential direction, a material leakage circular plate (38) is uniformly and fixedly mounted at the outer end of the screw rod (35), and a feeding hopper (39) is fixedly mounted at the upper end of the left side of the cylindrical barrel (31).
2. The method for preparing a polyurethane coating according to claim 1, wherein: the inner end face of the cylindrical plate (21) is positioned on the outer side of the grinding frame (25) and is uniformly and fixedly provided with an annular plate matched with the grinding frame (25), and the inner end face of the annular plate is rough.
3. The method for preparing a polyurethane coating according to claim 1, wherein: the grinding frame (25) comprises a circular table plate (251), a tooth-shaped ring (252), a grinding column (253) and grinding balls (254), the circular table plate (251) is fixedly mounted on the upper side of the rotating column (24), the tooth-shaped ring (252) is uniformly and fixedly mounted on the outer end face of the circular table plate (251), the grinding column (253) is uniformly and fixedly mounted on the outer end face of the tooth-shaped ring (252) along the circumferential direction through a pin shaft, and the grinding balls (254) are uniformly connected on the outer end face of the grinding column (253) along the circumferential direction in a sliding fit mode.
4. The method for preparing a polyurethane coating according to claim 1, wherein: screening board (26) are including fixed cylinder (261), ring board (262), cylindrical spring (263) and ring bushing (264), it has fixed cylinder (261) to lie in grinding frame (25) downside fixed mounting in cylinder board (21) the inner, fixed cylinder (261) terminal fixed mounting has ring board (262), the even fixed mounting in circumference has cylindrical spring (263) in fixed cylinder (261) upper end, cylindrical spring (263) upper end fixed mounting has ring bushing (264), small circle post through-hole has evenly been seted up along circumference in the ring bushing (264) outside.
5. The method for preparing a polyurethane coating according to claim 1, wherein: the stirring frame (27) comprises an inclined rod (271), a stirring rod (272) and an arc-shaped scraper (273), the inclined rod (271) is uniformly and fixedly mounted on the outer end face of the lower side of the rotating column (24) along the circumferential direction, the stirring rod (272) is uniformly and fixedly mounted on the outer end face of the inclined rod (271) along the circumferential direction, the arc-shaped scraper (273) is fixedly mounted at the tail end of the inclined rod (271), and a large arc-shaped groove is uniformly formed in the outer end face of the arc-shaped scraper (273) along the circumferential.
6. The method for preparing a polyurethane coating according to claim 1, wherein: screening plectane (28) is including plate body (281), hemisphere piece (282), dog (283), connect stock (284), control panel (285) and control lever (286), drum board (21) the inner is located stirring frame (27) downside fixed mounting has plate body (281), the cylinder through-hole has evenly been seted up along circumference on plate body (281), there is hemisphere piece (282) through axis of rotation fixed mounting in the cylinder through-hole, the inboard right-hand member fixed mounting of cylinder through-hole has dog (283), the axis of rotation rear end has connection stock (284) through round pin axle fixed mounting, connect stock (284) right-hand member fixed mounting has control panel (285), control panel (285) right-hand member middle part fixed mounting has control lever (286).
7. The method for preparing a polyurethane coating according to claim 1, wherein: the outer end of the screw rod (35) is uniformly and fixedly provided with an extrusion spring along the circumferential direction, and the tail end of the extrusion spring is fixedly provided with an extrusion block.
8. The method for preparing a polyurethane coating according to claim 1, wherein: the material leakage circular plate (38) is uniformly connected with rolling beads in a sliding fit manner along the circumferential direction.
CN202110012282.7A 2021-01-06 2021-01-06 Preparation method of polyurethane coating Withdrawn CN112808137A (en)

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Application publication date: 20210518