CN110886048A - Method and device for manufacturing chopped strand mat by using waste glass fibers - Google Patents
Method and device for manufacturing chopped strand mat by using waste glass fibers Download PDFInfo
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- CN110886048A CN110886048A CN201911106910.7A CN201911106910A CN110886048A CN 110886048 A CN110886048 A CN 110886048A CN 201911106910 A CN201911106910 A CN 201911106910A CN 110886048 A CN110886048 A CN 110886048A
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 64
- 239000002699 waste material Substances 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 51
- 239000000839 emulsion Substances 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 229920002689 polyvinyl acetate Polymers 0.000 claims abstract description 8
- 239000011118 polyvinyl acetate Substances 0.000 claims abstract description 8
- 238000004513 sizing Methods 0.000 claims abstract description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 7
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 62
- 238000005507 spraying Methods 0.000 claims description 60
- 238000003825 pressing Methods 0.000 claims description 33
- 238000004062 sedimentation Methods 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000000835 fiber Substances 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 18
- 238000010009 beating Methods 0.000 claims description 13
- 239000003595 mist Substances 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000004816 latex Substances 0.000 claims description 6
- 229920000126 latex Polymers 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000000265 homogenisation Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims 7
- 239000006185 dispersion Substances 0.000 abstract description 15
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000010410 dusting Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- -1 vibration Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
- D04H1/655—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging fibres
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a method and a device for manufacturing chopped strand mats by waste glass fibers, wherein the method for manufacturing the chopped strand mats by the waste glass fibers comprises the following steps: 1) cutting waste glass fibers into 5 +/-2 cm; 2) forming a net of the material obtained in the step 1) by using a net forming machine, and then settling and forming; 3) sizing and drying the material obtained in the step 2); the glue used for gluing is powder and/or emulsion, the powder is polyvinyl alcohol powder, and the emulsion is polyvinyl acetate emulsion; the drying adopts a hot air circulation heating mode, the drying temperature is 180-230 ℃, and the drying time is 70-140 seconds; 4) cold press molding, longitudinally cutting, transversely cutting and rolling the material obtained in the step 3) to obtain the chopped strand mat, wherein the cold press molding pressure is 3-4 kilograms of force/m2The temperature is 10-25 DEG C. The invention effectively solves the problems of difficult dispersion, poor uniformity and the like of the waste glass fiber, effectively utilizes the waste glass fiber, changes waste into valuable, has good uniformity of the obtained chopped strand mat, improves the economic benefit, and thoroughly solves the environmental protection problem of waste silk treatment which always troubles the glass fiber industry.
Description
Technical Field
The invention relates to a method and a device for manufacturing a chopped strand mat by using waste glass fibers, belonging to the field of waste glass fiber utilization.
Background
The waste glass fiber is an inevitable industrial tailing generated in the production of the glass fiber, and the normal production amount of the solid waste accounts for 10 to 15 percent of the total production amount of the glass fiber.
In the prior art, because the waste glass fibers are easy to agglomerate, difficult to disperse and poor in uniformity, a deep land burying treatment mode is adopted all the time, but the deep land burying treatment mode can cause serious pollution to land and cause great waste of land resources. In the present day when environmental protection is increasingly regarded as important, deep burying of the way is obviously no longer feasible.
Disclosure of Invention
The invention provides a method and a device for manufacturing a chopped strand mat by waste glass fibers, which effectively solve the problems of difficult dispersion, poor uniformity and the like of the waste glass fibers, effectively utilize the waste glass fibers, have good uniformity of the obtained chopped strand mat, greatly save the raw material cost of the chopped strand mat, have good economic benefit, thoroughly solve the problem of environmental protection of waste silk treatment which always troubles the glass fiber industry, have excellent social benefit and really realize 'changing waste into valuable'.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for manufacturing chopped strand mats by using waste glass fibers comprises the following steps:
1) cutting waste glass fibers into 5 +/-2 cm;
2) forming a net of the material obtained in the step 1) by using a net forming machine, and then settling and forming;
3) sizing and drying the material obtained in the step 2); the glue used for gluing is powder and/or emulsion, the powder is polyvinyl alcohol powder, and the emulsion is polyvinyl acetate emulsion; the drying adopts a hot air circulation heating mode, the drying temperature is 180-230 ℃, and the drying time is 70-140 seconds;
4) cold press molding, longitudinally cutting, transversely cutting and rolling the material obtained in the step 3) to obtain the chopped strand mat, wherein the cold press molding pressure is 3-4 kilograms of force/m2The temperature is 10-25 ℃.
In the step 2), the chopped fibers can be uniformly distributed in an unoriented crossed manner by settling and molding; in the step 3), the drying temperature and time are selected, so that the uniformity of glue permeation and the smoothness of the obtained product are ensured, and the structural strength of the obtained product is also ensured; the setting of the cold press forming pressure and temperature in the step 4) is also very critical, and the structural stability of the product is directly determined. The chopped strand mat obtained by the method has good uniformity, does not have layering and filament dropping phenomena, changes waste into valuable, and well ensures the quality of the obtained product.
In order to further improve the dispersion uniformity of the chopped strand mat, the total pressure during the sedimentation molding in the step 2) is 1800 Pa.
In the step 3), the polyvinyl alcohol powder is preferably Shanghai Yingjia polyvinyl alcohol powder PVA 1799. The polyvinyl acetate emulsion is preferably Huaqian 730-polyvinyl acetate emulsion.
In order to further improve the structural strength of the chopped strand mat, in the step 3), the sizing comprises the following steps which are connected in sequence: spraying powder, vibrating, spraying water and spraying emulsion, wherein the mass consumption of the powder is 4-5% of the mass of the waste glass fiber, the mass consumption of the water spraying is 8-10% of the mass of the waste glass fiber, and the mass consumption of the emulsion is 5-8% of the mass of the waste glass fiber. The sprinkling is for better adhesion of the powder. Spraying water and spraying emulsion are sprayed in a water mist mode.
An apparatus for making chopped strand mat from waste glass fiber, comprising in succession: a fiber chopping machine, a web former, a sedimentation homogenization section, a glue applying section, a drying section, a cold-pressing solidification section and a rolling section;
the sedimentation homogenizing section comprises a first circulating conveying net, a conveying pipe, a pressure equalizing chamber and a sedimentation fan; one end of the conveying pipe is equal to the first circulating conveying net in width and is connected with the bottom of the first circulating conveying net, and the other end of the conveying pipe is communicated with one end of the pressure equalizing chamber; the sedimentation fan is communicated with the other end of the pressure equalizing chamber; can guarantee that each hole of first circulation transport net all has even amount of wind to pass through, guarantee fibrous evenly distributed on the whole width of felt, subside the fan, preferred parameter: flow 14350M3H, full pressure 1800Pa, rotation speed 1450 rpm;
the glue applying section comprises a second circulating conveying net, and a powder scattering device, an aqueous agent spraying device and an emulsion spraying device which are sequentially arranged above the second circulating conveying net; a powder recovery device, a water agent recovery device and a latex recovery device are sequentially arranged below the second circulating conveying net, the powder recovery device is arranged opposite to the powder scattering device, the water agent recovery device is arranged opposite to the water agent spraying device, and the latex recovery device is arranged opposite to the emulsion spraying device; an electric vibrator is arranged on a second circulating conveying net between the powder scattering device and the water agent spraying device;
the drying section comprises a drying chamber and a third circulating conveying net, a feeding hole and a discharging hole are respectively formed in two ends of the drying chamber, the starting end of the third circulating conveying net is located at the feeding hole of the drying chamber, and the terminal end of the third circulating conveying net is located at the discharging hole of the drying chamber;
the cold pressing solidification section comprises a supporting surface and circulating water type cold pressing rollers, the number of the circulating water type cold pressing rollers is three, and the two circulating water type cold pressing rollers of each pair of circulating water type cold pressing rollers are oppositely arranged on the upper side and the lower side of the supporting surface; the first circulating conveying net, the second circulating conveying net, the third circulating conveying net and the supporting surface are connected in sequence.
The circulating conveying net can drive materials on the circulating conveying net to flow forwards by the circulating rolling of the closed conveying net. The arrangement of the supports for the arrangement of the segments can be carried out using the prior art.
In order to further improve the uniformity of material distribution, the web former has two webs which have the same structure and are connected in front and back. This further improves the uniformity of the distribution of the glass fibers.
In order to further improve the dispersion uniformity of the waste glass fibers, the web forming machine comprises a web forming chamber, wherein a first conveying curtain, a first angle nail curtain, a second angle nail curtain and a second conveying curtain which are connected in sequence are arranged in the web forming chamber, and the tail end of the second conveying curtain is positioned outside the web forming chamber; the first angle nail curtain is of an obliquely upward structure, the second angle nail curtain is of an obliquely downward structure, the included angle between the working surface of the first angle nail curtain and the horizontal plane is 125-135 degrees, and the included angle between the working surface of the second angle nail curtain and the horizontal plane is 40-50 degrees; the two web forming machines are respectively a first web forming machine and a second web forming machine, the fiber chopping machine is connected with a first conveying curtain of the first web forming machine, a second conveying curtain of the first web forming machine is connected with a first conveying curtain of the second web forming machine, and a second conveying curtain of the second web forming machine is connected with the first circulating conveying net.
In order to further improve the dispersion uniformity of the waste glass fibers, more than two rows of angle nails are arranged on the first angle nail curtain and the second angle nail curtain along the length direction, and the two adjacent rows of angle nails are arranged in a staggered mode.
Preferably, the distance between two adjacent rows of angle nails on the first angle nail curtain and the second angle nail curtain is 35-45mm, the angle nails on the first angle nail curtain are arranged obliquely upwards, and the included angle between the angle nails and the plane where the first angle nail curtain is located is 40-50 degrees; the angle nails on the second angle nail curtain are arranged downwards in an inclined way, and the included angle between the angle nails and the plane where the second angle nail curtain is arranged is 50-60 degrees
In order to better ensure the uniformity of the dispersion of the waste glass fibers, the distance between the pins in the same row on the first pin curtain and the second pin curtain is 25-35 mm; the length of the brad nail on the first brad nail curtain and the second brad nail curtain is 25-35 mm. The angle nail is a steel nail with an upward pointed end. The web former has good stability and good dispersion uniformity.
In order to further improve the dispersion uniformity of the waste glass fibers, a first pressing roller and a material homogenizing roller are sequentially arranged above the first corner nail curtain from the upstream to the downstream, and four rows of material homogenizing nails are uniformly distributed on the surface of the material homogenizing roller along the circumferential direction; and a material beating roller is arranged above the second angle nail curtain, and four rows of beating nails are uniformly distributed on the surface of the material beating roller along the circumferential direction. Waste glass fibers on the first corner nail curtain are homogenized by the first pressing roller, further homogenized by the homogenizing roller, and finally flow to the second corner nail curtain, and the waste glass fibers are beaten down by the beating roller and uniformly fall to the second conveying curtain.
In order to reduce material loss and environmental pollution, the tail end of the second angle nail curtain is higher than the second conveying curtain, and a first blanking channel is arranged between the second angle nail curtain and the second conveying curtain.
Glass fiber is fed into the first conveying curtain, is taken away by the first angle nail curtain, sequentially passes through the pressing roller and the material homogenizing roller, enters the second angle nail curtain, is peeled off by the material beating roller, and falls onto the second conveying curtain after passing through the first blanking channel.
In order to further improve the dispersion uniformity of the waste glass fibers, the tail end of a second conveying curtain of the second web forming machine is higher than the first circulating conveying net, a second blanking channel is arranged between the tail end of the second conveying curtain and the first circulating conveying net, and one end, connected with the bottom of the first circulating conveying net, of the conveying pipe is located right below the second blanking channel. And the waste glass fibers at the tail end of the second conveying curtain fall on the first circulating conveying net through the second blanking channel, are subjected to pressure equalization through the pressure equalizing chamber and are conveyed to the bottom of the first circulating conveying net through the conveying pipe for settlement equalization.
In order to further improve the dispersion uniformity of the waste glass fibers, a second pressing roller is arranged above the second conveying curtain, and the surface of the second pressing roller is provided with reticulate knurls. The second press roll is adjustable in height, so that fed fibers are in a holding state, the uniformity of a formed web is improved, and the surface of the second press roll is knurled, so that the friction force is improved, and the fibers are not stained. The second press roller and the second conveying curtain are synchronously driven.
In order to save space, the corner nail curtain is in a closed ring shape, and is driven by the first roller wheel, the second roller wheel and the third roller wheel which are arranged in a triangular shape to realize circulating transmission, the corner nail curtain between the first roller wheel and the second roller wheel forms a first corner nail curtain, and the corner nail curtain between the second roller wheel and the third roller wheel forms a second corner nail curtain. The installation of the rollers and the like can be carried out by the existing method as long as the structure particularly emphasized in the present application can be realized.
The short cut fibers can be uniformly distributed by using the web former.
In order to improve the stability of sedimentation molding and ensure the uniformity of waste glass fiber dispersion, the pressure equalizing chamber comprises a square box body, an air inlet and an air outlet are respectively arranged at two ends of the box body, the air inlet of the box body is communicated with the conveying pipe, the air outlet of the box body is communicated with the sedimentation fan, a first baffle, a second baffle, a third baffle and a fourth baffle are sequentially arranged in the direction from the air outlet to the air inlet inside the box body, the first baffle and the third baffle are arranged at the top of the inner side of the box body, the third baffle and the fourth baffle are arranged at the bottom of the inner side of the box body, and the sum of the heights of the first baffle and the second baffle is 40-50mm greater than the. The sum of the heights of the third baffle and the fourth baffle is 40-50mm greater than the height of the inner side of the box body, the filter screen is a galvanized steel wire mesh, and the filtering holes in the filter screen are square holes of 6mm multiplied by 6 mm. The structure can well ensure the stability of the sedimentation forming air pressure and the air quantity, and further better ensure the dispersion uniformity of the waste glass fiber.
In order to further improve the uniformity of the dispersion of the waste glass fibers, as a preferred implementation scheme, the powder scattering device comprises a scattering funnel and a scattering roller arranged below the scattering funnel, a filter screen is arranged at the bottom of the scattering funnel, and the scattering funnel and the scattering roller are both arranged on supports on two sides of the second circulating conveying net in the width direction; the water agent spraying device comprises a water spraying pipe, the length direction of the water spraying pipe is consistent with the width direction of the second circulating conveying net, 6-8 first water mist spray heads with downward spraying directions are uniformly distributed on the water spraying pipe along the length direction, and the water spraying pipe is arranged on the supports on two sides of the second circulating conveying net in the width direction; the emulsion spraying device comprises an emulsion pipe, the length direction of the emulsion pipe is consistent with the width direction of the second circulating conveying net, 6-8 second water mist spray nozzles with downward spraying directions are uniformly distributed on the emulsion pipe along the length direction, and the emulsion is arranged on the supports on two sides of the second circulating conveying net in the width direction.
In order to improve the conveying stability of the device, the first circulating conveying net and the second circulating conveying net adopt friction transmission; the third circulating conveying net adopts a chain traction mode. Solves the problems that the mesh belt is easy to deviate and is unstable in operation.
In order to improve the drying effect, the drying chamber is provided with four sections which are connected in sequence, and the drying chamber is heated by hot air circulation; from the upstream to the downstream, the drying temperature of the four-section drying chamber is sequentially 180-. The sectional drying device can better ensure the drying uniformity and stability, is easy to control, can ensure the reasonable and uniform distribution of hot air on the surface of the felt, and avoids the problems of brittleness, hardness and slow soaking speed of the dried felt; the good drying effect of the product is ensured.
The upper and lower, left and right sides, top, bottom of this application equidimensional words all indicate the relative position of device normal use, and the direction of low reaches is gone upstream to this application, also during the preparation, the flow direction of material.
The prior art is referred to in the art for techniques not mentioned in the present invention.
The method for manufacturing the chopped strand mat by using the waste glass fibers effectively solves the problems of difficult dispersion, poor uniformity and the like of the waste glass fibers, effectively utilizes the waste glass fibers, has good uniformity of the obtained chopped strand mat, greatly saves the raw material cost of the chopped strand mat, has good economic benefit, thoroughly solves the problem of waste wire treatment environmental protection which always troubles the glass fiber industry, has excellent social benefit, and really realizes 'changing waste into valuable'.
Drawings
FIG. 1 is a schematic view showing the construction of an apparatus for producing a chopped strand mat from waste glass fibers according to the present invention;
FIG. 2 is a schematic structural diagram of a web former of the present invention;
FIG. 3 is a schematic view of a pressure equalizing chamber according to the present invention;
FIG. 4 is a schematic structural view of a powdering device according to the present invention;
in the figure, 1 is a fiber chopping machine, 2 is a first web forming machine, 201 is a web forming chamber, 202 is a first conveying curtain, 203 is a first corner nail curtain, 204 is a second corner nail curtain, 205 is a second conveying curtain, 206 is a first press roll, 207 is a homogenizing roll, 208 is a beating roll, 209 is a first blanking channel, 210 is a second press roll, 3 is a second web forming machine, 4 is a sedimentation homogenizing section, 401 is a first circulating conveying net, 402 is a conveying pipe, 403 is a homogenizing chamber, 4031 is a box body, 4032 is an air inlet, 4033 is an air outlet, 4034 is a first baffle, 4035 is a second baffle, 4036 is a filter screen, 4037 is a third baffle, 4038 is a fourth baffle, 404 is a sedimentation fan, 405 is a second channel, 5 is a sizing section, 502501 is a second circulating conveying net, 5011 is brackets on both sides of the width direction of the second circulating conveying net, 502 is a dusting device, 502 is a scattering funnel, 2 is a scattering roller, 5023 is a bracket, 5024 is a material scattering roller, 503 is a water agent spraying device, 504 is an emulsion spraying device, 6 is a drying section, 601 is a third circulating conveying net, 602 is a drying chamber, 7 is a cold pressing and solidifying section, 701 is a supporting surface, 702 is a circulating water type cold pressing roller, and 8 is a rolling section.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
The method for preparing the chopped strand mat by using the waste glass fiber, which is derived from industrial tailings generated in the production of the glass fiber, comprises the following steps:
1) cutting the waste glass fiber into 5cm in length;
2) after the material obtained in the step 1) is formed into a net by a net forming machine, the material is settled and formed, so that the chopped fibers can be uniformly distributed in an unoriented crossed manner;
3) gluing and drying the material obtained in the step 2), wherein a hot air circulation heating mode is adopted for drying; spraying powder, vibrating, spraying water and spraying emulsion, wherein the mass consumption of the powder is 4.5 percent of the mass of the waste glass fiber, the mass consumption of the water spraying is 9 percent of the mass of the waste glass fiber, the mass consumption of the emulsion is 6 percent of the mass of the waste glass fiber, the powder is PVA1799 powder of Shanghai Yijia brand, and the emulsion is Huaqiao 730-polyvinyl acetate emulsion; spraying water and emulsion in water mist mode;
4) cold press molding, longitudinally cutting, transversely cutting and rolling the material obtained in the step 3) to obtain the chopped strand mat, wherein the cold press molding pressure is 3.5 kilograms of force/m2The temperature is 10-15 ℃.
As shown in FIG. 1, the device used in the method comprises the following components in sequence: a fiber chopping machine, a web former, a sedimentation homogenization section, a glue applying section, a drying section, a cold-pressing solidification section and a rolling section;
the sedimentation homogenizing section comprises a first circulating conveying net, a conveying pipe, a pressure equalizing chamber and a sedimentation fan; one end of the conveying pipe is equal to the first circulating conveying net in width and is connected with the bottom of the first circulating conveying net, and the other end of the conveying pipe is communicated with one end of the pressure equalizing chamber; the sedimentation fan is communicated with the other end of the pressure equalizing chamber; can ensure that each hole of the first circulating conveying net has uniform air quantity, ensures the uniform distribution of fibers on the whole width of the felt, and ensures the sedimentation fan with the flow of 14350M3H, full pressure 1800Pa, rotation speed 1450 rpm;
the glue applying section comprises a second circulating conveying net, and a powder scattering device, an aqueous agent spraying device and an emulsion spraying device which are sequentially arranged above the second circulating conveying net; a powder recovery device, a water agent recovery device and a latex recovery device are sequentially arranged below the second circulating conveying net, the powder recovery device is arranged opposite to the powder scattering device, the water agent recovery device is arranged opposite to the water agent spraying device, and the latex recovery device is arranged opposite to the emulsion spraying device; an electric vibrator is arranged on a second circulating conveying net between the powder scattering device and the water agent spraying device and is used for further homogenizing the scattered powder;
the drying section comprises a drying chamber and a third circulating conveying net, a feeding hole and a discharging hole are respectively formed in two ends of the drying chamber, the starting end of the third circulating conveying net is located at the feeding hole of the drying chamber, and the terminal end of the third circulating conveying net is located at the discharging hole of the drying chamber;
the cold pressing solidification section comprises a supporting surface and circulating water type cold pressing rollers, the number of the circulating water type cold pressing rollers is three, and the two circulating water type cold pressing rollers of each pair of circulating water type cold pressing rollers are oppositely arranged on the upper side and the lower side of the supporting surface; the first circulating conveying net, the second circulating conveying net, the third circulating conveying net and the supporting surface are connected in sequence.
As shown in fig. 2, the web former comprises a web forming chamber, a first conveying curtain, a first brad nail curtain, a second brad nail curtain and a second conveying curtain which are connected in sequence are arranged in the web forming chamber, wherein the tail end of the second conveying curtain is positioned outside the web forming chamber; the first angle nail curtain is of an obliquely upward structure, the second angle nail curtain is of an obliquely downward structure, the included angle between the working surface of the first angle nail curtain and the horizontal plane is 130 degrees, and the included angle between the working surface of the second angle nail curtain and the horizontal plane is 45 degrees; the web forming machine has two web forming machines which are the same in structure and connected in front and back, the two web forming machines are respectively a first web forming machine and a second web forming machine, the fiber chopping machine is connected with a first conveying curtain of the first web forming machine, a second conveying curtain of the first web forming machine is connected with a first conveying curtain of the second web forming machine, and a second conveying curtain of the second web forming machine is connected with a first circulating conveying web.
The first angle nail curtain and the second angle nail curtain are respectively provided with more than two rows of angle nails along the length direction, and the adjacent two rows of angle nails are arranged in a staggered manner; the distance between two adjacent rows of angle nails on the first angle nail curtain and the second angle nail curtain is 40mm, the angle nails on the first angle nail curtain are arranged obliquely upwards, and the included angle between the angle nails and the plane where the first angle nail curtain is located is 45 degrees; the angle nails on the second angle nail curtain are obliquely arranged downwards, and the included angle between the angle nails and the plane where the second angle nail curtain is located is 55 degrees; the distance between the brads in the same row on the first brad curtain and the second brad curtain is 30 mm; the length of the corner nails on the first corner nail curtain and the second corner nail curtain is 30 mm. The angle nail is a steel nail with an upward pointed end.
A first compression roller and a material homogenizing roller are sequentially arranged above the first corner nail curtain from the upstream to the downstream, and four rows of material homogenizing nails are uniformly distributed on the surface of the material homogenizing roller along the circumferential direction; and a material beating roller is arranged above the second angle nail curtain, and four rows of beating nails are uniformly distributed on the surface of the material beating roller along the circumferential direction.
The tail end of the second angle nail curtain is higher than the second conveying curtain, and a first blanking channel is arranged between the second angle nail curtain and the second conveying curtain. Glass fiber is fed into the first conveying curtain, then is taken away by the first angle nail curtain, sequentially passes through the pressing roller and the material homogenizing roller, enters the second angle nail curtain, is peeled off by the material beating roller, and falls onto the second conveying curtain after passing through the blanking channel. In order to further improve the dispersion uniformity of the waste glass fibers, the tail end of a second conveying curtain of the second web forming machine is higher than the first circulating conveying net, a second blanking channel is arranged between the tail end of the second conveying curtain and the first circulating conveying net, and one end, connected with the bottom of the first circulating conveying net, of the conveying pipe is located right below the second blanking channel. And the waste glass fibers at the tail end of the second conveying curtain fall on the first circulating conveying net through the second blanking channel, are subjected to pressure equalization through the pressure equalizing chamber and are conveyed to the bottom of the first circulating conveying net through the conveying pipe for settlement equalization.
And a second pressing roller is arranged above the second conveying curtain, and a reticulate pattern knurl is arranged on the surface of the second pressing roller. The second press roll is adjustable in height, so that fed fibers are in a holding state, the uniformity of a formed web is improved, and the surface of the second press roll is knurled, so that the friction force is improved, and the fibers are not stained. The second press roller and the second conveying curtain are synchronously driven.
The angle nail curtain is in a closed ring shape, and is driven by the first roller, the second roller and the third roller which are arranged in a triangular shape to perform circular transmission, the angle nail curtain between the first roller and the second roller forms a first angle nail curtain, and the angle nail curtain between the second roller and the third roller forms a second angle nail curtain.
As shown in fig. 3, the pressure equalizing chamber includes a square box body, an air inlet and an air outlet are respectively arranged at two ends of the box body, the air inlet of the box body is communicated with the conveying pipe, the air outlet of the box body is communicated with the sedimentation fan, a first baffle, a second baffle, a third baffle and a fourth baffle are sequentially arranged in the direction from the air outlet to the air inlet inside the box body, the first baffle and the third baffle are arranged at the top of the inner side of the box body, the third baffle and the fourth baffle are arranged at the bottom of the inner side of the box body, and the sum of the heights of the first baffle and the second baffle is 40-50mm greater than the height of. The sum of the heights of the third baffle and the fourth baffle is 40-50mm greater than the height of the inner side of the box body, the filter screen is a galvanized steel wire mesh, and the filtering holes in the filter screen are square holes of 6mm multiplied by 6 mm.
As shown in fig. 4, the dusting device comprises a dusting funnel and a dusting roller arranged below the dusting funnel, a filter screen is arranged at the bottom of the dusting funnel, and the dusting funnel and the dusting roller are both arranged on the brackets at two sides of the second circulating conveying net in the width direction; the water agent spraying device comprises a water spraying pipe, the length direction of the water spraying pipe is consistent with the width direction of the second circulating conveying net, 8 first water mist spray heads with downward spraying directions are uniformly distributed on the water spraying pipe along the length direction, and the water spraying pipe is arranged on the supports on two sides of the second circulating conveying net in the width direction; the emulsion spraying device comprises an emulsion pipe, the length direction of the emulsion pipe is consistent with the width direction of the second circulating conveying net, 8 second water mist spray heads with downward spraying directions are uniformly distributed on the emulsion pipe along the length direction, and the emulsion is installed on the supports on two sides of the second circulating conveying net in the width direction.
The first circulating conveying net and the second circulating conveying net adopt friction transmission; the third circulating conveying net adopts a chain traction mode, and solves the problems that the net belt is easy to deviate and is unstable in operation.
The drying chamber has four sections, and the drying chamber is heated by hot air circulation; from the upstream to the downstream, the drying temperature of the four-section drying chamber is sequentially 180-.
Waste glass fiber warpThe fiber chopping machine cuts the fiber into 5cm in length, the fiber enters a first conveying curtain of a first net forming machine, is homogenized by a first angle nail curtain and a second angle nail curtain, falls into a second conveying curtain, then enters a first conveying curtain of a second net forming machine, flows into a first circulating conveying net for sedimentation forming after the homogenization procedure the same as that of the first net forming machine, ensures that the chopped fiber is not directionally crossed and uniformly distributed, and then flows into a second circulating conveying net for sizing (the sizing comprises spraying powder, vibration, water spraying and emulsion spraying which are sequentially connected, the mass of the powder is 4.5 percent of the mass of the waste glass fiber, the mass of the water spraying is 9 percent of the mass of the waste glass fiber, the mass of the emulsion is 6 percent of the mass of the waste glass fiber, the powder is PVA powder 1799 of Shanghai Yingjia brand polyvinyl acetate emulsion, the emulsion is Huaqiao 730-polyvinyl acetate emulsion, and the water spraying emulsion is sprayed by a water mist mode), then flows into a third circulating conveying net for drying operation, and finally flows into a supporting surface for cold pressing and solidification molding (the cold pressing molding pressure of each pair of circulating water type cold pressing rollers is 3.5 kilograms of force/m2The temperature is 10-15 ℃), then the steel wire is wound in a winding section, and when the steel wire reaches a set length, the steel wire is cut off. Under the rolling traction and the pushing of each circulating conveying net, the chopped strand mat is continuously produced, and a continuous production process is formed.
Capacity of the above apparatus: 3000 tons/year; (at 300 g/m)2) (ii) a The product width is as follows: 2100 mm; the product specification is as follows: 100. 120, 150, 200, 225, 250, 300, 380, 450, 550 or 600g/m2(ii) a Product uniformity: the deviation of the average gram weight values of different specifications is less than 1 percent, and the product has uniform and flat surface, no layering and no filament falling.
Claims (10)
1. A method for manufacturing chopped strand mats by using waste glass fibers is characterized by comprising the following steps: the method comprises the following steps:
1) cutting waste glass fibers into 5 +/-2 cm;
2) forming a net of the material obtained in the step 1) by using a net forming machine, and then settling and forming;
3) sizing and drying the material obtained in the step 2); the glue used for gluing is powder and/or emulsion, the powder is polyvinyl alcohol powder, and the emulsion is polyvinyl acetate emulsion; the drying adopts a hot air circulation heating mode, the drying temperature is 180-230 ℃, and the drying time is 70-140 seconds;
4) cold press molding, longitudinally cutting, transversely cutting and rolling the material obtained in the step 3) to obtain the chopped strand mat, wherein the cold press molding pressure is 3-4 kilograms of force/m2The temperature is 10-25 ℃.
2. The method of manufacturing chopped strand mat from waste glass fiber according to claim 1, wherein: in the step 2), the total pressure is 1800Pa during sedimentation molding; in the step 3), the sizing comprises the following steps which are connected in sequence: sprinkling powder, vibrating, spraying water and spraying emulsion, wherein the mass consumption of the powder is 4-5% of the mass of the waste glass fiber, the mass consumption of the spraying water is 8-10% of the mass of the waste glass fiber, and the mass consumption of the emulsion is 5-8% of the mass of the waste glass fiber.
3. The utility model provides a device of short felt with useless glass fiber preparation which characterized in that: comprises the following steps: a fiber chopping machine, a web former, a sedimentation homogenization section, a glue applying section, a drying section, a cold-pressing solidification section and a rolling section;
the sedimentation homogenizing section comprises a first circulating conveying net, a conveying pipe, a pressure equalizing chamber and a sedimentation fan; one end of the conveying pipe is equal to the first circulating conveying net in width and is connected with the bottom of the first circulating conveying net, and the other end of the conveying pipe is communicated with one end of the pressure equalizing chamber; the sedimentation fan is communicated with the other end of the pressure equalizing chamber;
the glue applying section comprises a second circulating conveying net, and a powder scattering device, an aqueous agent spraying device and an emulsion spraying device which are sequentially arranged above the second circulating conveying net; a powder recovery device, a water agent recovery device and a latex recovery device are sequentially arranged below the second circulating conveying net, the powder recovery device is arranged opposite to the powder scattering device, the water agent recovery device is arranged opposite to the water agent spraying device, and the latex recovery device is arranged opposite to the emulsion spraying device; an electric vibrator is arranged on a second circulating conveying net between the powder scattering device and the water agent spraying device;
the drying section comprises a drying chamber and a third circulating conveying net, a feeding hole and a discharging hole are respectively formed in two ends of the drying chamber, the starting end of the third circulating conveying net is located at the feeding hole of the drying chamber, and the terminal end of the third circulating conveying net is located at the discharging hole of the drying chamber;
the cold pressing solidification section comprises a supporting surface and circulating water type cold pressing rollers, the number of the circulating water type cold pressing rollers is three, and the two circulating water type cold pressing rollers of each pair of circulating water type cold pressing rollers are oppositely arranged on the upper side and the lower side of the supporting surface; the first circulating conveying net, the second circulating conveying net, the third circulating conveying net and the supporting surface are connected in sequence.
4. The apparatus for manufacturing chopped strand mats according to claim 3, wherein: the web former has two web formers which have the same structure and are connected in front and back.
5. The apparatus for manufacturing chopped strand mat from waste glass fiber according to claim 4, wherein: the web former comprises a web forming chamber, wherein a first conveying curtain, a first angle nail curtain, a second angle nail curtain and a second conveying curtain which are connected in sequence are arranged in the web forming chamber, and the tail end of the second conveying curtain is positioned outside the web forming chamber; the first angle nail curtain is of an obliquely upward structure, the second angle nail curtain is of an obliquely downward structure, the included angle between the working surface of the first angle nail curtain and the horizontal plane is 125-135 degrees, and the included angle between the working surface of the second angle nail curtain and the horizontal plane is 40-50 degrees; the two web forming machines are respectively a first web forming machine and a second web forming machine, the fiber chopping machine is connected with a first conveying curtain of the first web forming machine, a second conveying curtain of the first web forming machine is connected with a first conveying curtain of the second web forming machine, and a second conveying curtain of the second web forming machine is connected with the first circulating conveying net.
6. The apparatus for manufacturing chopped strand mats according to claim 5, wherein: the first angle nail curtain and the second angle nail curtain are respectively provided with more than two rows of angle nails along the length direction, and the adjacent two rows of angle nails are arranged in a staggered manner; the distance between two adjacent rows of angle nails on the first angle nail curtain and the second angle nail curtain is 35-45 mm; the distance between the brads in the same row on the first brad curtain and the second brad curtain is 25-35 mm; the angle nails on the first angle nail curtain are obliquely arranged upwards, and the included angle between the angle nails and the plane where the first angle nail curtain is located is 40-50 degrees; the angle nails on the second angle nail curtain are obliquely arranged downwards, and the included angle between the angle nails and the plane where the second angle nail curtain is located is 50-60 degrees; the length of the brad nail on the first brad nail curtain and the second brad nail curtain is 25-35 mm.
7. The apparatus for manufacturing chopped strand mats according to claim 5 or 6, wherein: a first compression roller and a material homogenizing roller are sequentially arranged above the first corner nail curtain from the upstream to the downstream, and four rows of material homogenizing nails are uniformly distributed on the surface of the material homogenizing roller along the circumferential direction; a material beating roller is arranged above the second angle nail curtain, and four rows of material beating nails are uniformly distributed on the surface of the material beating roller along the circumferential direction; and a second pressing roller is arranged above the second conveying curtain, and a reticulate pattern knurl is arranged on the surface of the second pressing roller.
8. The apparatus for manufacturing chopped strand mats according to claim 5 or 6, wherein: the tail end of the second angle nail curtain is higher than the second conveying curtain, and a first blanking channel is arranged between the second angle nail curtain and the second conveying curtain; the tail end of a second conveying curtain of the second web former is higher than the first circulating conveying net, a second blanking channel is arranged between the tail end of the second conveying curtain and the first circulating conveying net, and one end, connected with the bottom of the first circulating conveying net, of the conveying pipe is located right below the second blanking channel.
9. The apparatus for manufacturing chopped strand mats according to claim 3 or 4, wherein: the pressure equalizing chamber comprises a square box body, an air inlet and an air outlet are respectively arranged at two ends of the box body, the air inlet of the box body is communicated with the conveying pipe, the air outlet of the box body is communicated with the sedimentation fan, a first baffle, a second baffle, a filter screen, a third baffle and a fourth baffle are sequentially arranged on the inner side of the box body and in the direction from the air outlet to the air inlet, the first baffle and the third baffle are arranged on the top of the inner side of the box body, the third baffle and the fourth baffle are arranged on the bottom of the inner side of the box body, the sum of the heights of the first baffle and the second baffle is 40-50mm larger than the height of the inner side of the box body, the sum of the heights of the third baffle and the fourth baffle is 40-50mm larger than the height of the inner side of the box body;
the powder spreading device comprises a spreading funnel and a spreading roller arranged below the spreading funnel, a filter screen is arranged at the bottom of the spreading funnel, and the spreading funnel and the spreading roller are both arranged on the supports on the two sides of the second circulating conveying net in the width direction; the water agent spraying device comprises a water spraying pipe, the length direction of the water spraying pipe is consistent with the width direction of the second circulating conveying net, 6-8 first water mist spray heads with downward spraying directions are uniformly distributed on the water spraying pipe along the length direction, and the water spraying pipe is arranged on the supports on two sides of the second circulating conveying net in the width direction; the emulsion spraying device comprises an emulsion pipe, the length direction of the emulsion pipe is consistent with the width direction of the second circulating conveying net, 6-8 second water mist spray nozzles with downward spraying directions are uniformly distributed on the emulsion pipe along the length direction, and the emulsion is arranged on the supports on two sides of the second circulating conveying net in the width direction.
10. The apparatus for manufacturing chopped strand mats according to claim 3 or 4, wherein: the drying chamber is provided with four sections which are connected in sequence, and the drying chamber is heated by hot air circulation; from the upstream to the downstream, the drying temperature of the four-section drying chamber is sequentially 185 ℃, 200-.
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|---|---|---|---|
| CN201911106910.7A CN110886048A (en) | 2019-11-13 | 2019-11-13 | Method and device for manufacturing chopped strand mat by using waste glass fibers |
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|---|---|---|---|
| CN201911106910.7A CN110886048A (en) | 2019-11-13 | 2019-11-13 | Method and device for manufacturing chopped strand mat by using waste glass fibers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592284A (en) * | 2021-04-15 | 2022-06-07 | 江苏长海复合材料股份有限公司 | Preparation process and application of glass fiber continuous felt |
| CN116460111A (en) * | 2023-04-11 | 2023-07-21 | 泰安三英新材料股份有限公司 | System and method for recycling chopped strand mat rubber powder |
-
2019
- 2019-11-13 CN CN201911106910.7A patent/CN110886048A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592284A (en) * | 2021-04-15 | 2022-06-07 | 江苏长海复合材料股份有限公司 | Preparation process and application of glass fiber continuous felt |
| CN116460111A (en) * | 2023-04-11 | 2023-07-21 | 泰安三英新材料股份有限公司 | System and method for recycling chopped strand mat rubber powder |
| CN116460111B (en) * | 2023-04-11 | 2023-10-20 | 泰安三英新材料股份有限公司 | System and method for recycling chopped strand mat rubber powder |
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