CN107891591A - More feed openings cylinders - Google Patents

Abstract

More feed openings cylinders, at feed openings (2) place of feed openings cylinder (1), charging circular arc oblique angle (3) is expanded into above import to 8 word holes (4), two circular arc intersection self-assembling formation beveled tip angles (5), circular arc oblique angle (3) is the circular arc sideling expanded in two round openings in 8 word holes (4), during production, material falls into feed openings (2) place, partial material has just been entered in circular arc oblique angle (3), when the material in screw rod turning handle feed openings (2) is promoted in 8 word holes, also the material in circular arc oblique angle is seen in, reach raising yield, the angle at oblique angle is big and length is grown, the material material quickly entered is just more, angle of bevel is small and length is short, the material entered is just few.

Description

More feed openings cylinders

Technical field

This technology belongs to chemical equipment rubber and plastic industry double screw extruder field.

Technical background

Plastics and its plastic products extensive purposes, have been contemporary people, contemporary society's various aspects with its superior function Indispensable material, is the indispensable material of today's society, the material that can not be substituted, and dosage is increasing, possesses Measure more and more, application is also increasingly wider, and the yield of many national plastics alreadys exceed steel, turns into the first material of country Material, China has started to walk more late than developed country decades, but China is fast-growth, world forefront is come into, as production The mechanized equipment of plastics is equally quickly grown in China, and plastic apparatus constantly improve, and new varieties continuously emerge, and plastics also have one Individual feature, temperature are plastified in 200 degree or so cans, can be granulated after plasticizing, can be fabricated to the product of various needs, but It is, as the plastic article that plastic products use is scrapped later is also more and more, to also have substantial amounts of disposable plastics Product is abandoned after, including the various social waste plastics of every country are also more and more, is without putrefaction the characteristics of plastics, no Disappear, the accumulation of the plastics that do not disappear is more, just turns into pollution environment, and waste plastics this point is into an evil of society, every country All eliminating this phenomenon.Plastics can reclaim, heating again plasticizing manufacture regenerated plastics, the old process in plastics having it is good, very To new plastic can be replaced.

Waste or used plastics are reclaimed, new product is manufactured with waste or used plastics, turns waste into wealth, also eliminate plastic pollution, this has been each The project that government supports energetically, the enterprise of plastic industry recycling waste or used plastics is also more and more, and scale is also increasing, then because Low for the collection cost of waste or used plastics, as long as production technology is well-done, relative profit is high, so China's waste plastics utilization rate It is high.

Tianjin You Ge Hua Xinda groups, it is that technics of reclaim of plastic waste that country sets up an office, government investment recycles demonstration base Ground, 2,300,000,000 yuan are invested, technically the technician of the domestic most strong high polymer of recruitment, take up an area 750 mu of soils, an extension of group Board " national recycling economy education Demonstration Base ", " industrial place of interest ", group is when purchasing granulating extruder, as long as home-made machine, The extruder of 4 higher enterprises of domestic reputation is chosen, the double ranks of double screw extruder of 24 or 12*2 bars have been entered by each family Production line (2014), exactly each manufacturer are to say that the product of oneself is good, but take out convictive technology without one Scheme, so the collective purchasing extrusion machine production line of 4 enterprises, carries out production contrast.

The waste or used plastics of recovery first have to be granulated, and produce various particles, then with particle come manufacture plastic components, into Product.Not of uniform size because the kind of waste or used plastics differs, not of uniform size by the plastic grain of crushing, small powder is being extruded Fast melt in machine, big particle are the big of more than ten times of little particle, and the time of thawing is the time of short grained several times certainly It could melt, still, extruder is all universal at present, and the double screw extruder for waste or used plastics is actually simply to whole The individual other places of machine are adjusted.Also have to such crushed material, be granulated using single screw extrusion machine, particle is to allow easy manufacture Come, but the material stirring of Single screw extrusion is uneven, the particle mixing for extruding manufacture does not reach finished particle standard, and single screw rod is squeezed Go out the particle of machine manufacture, be only used for the plastic products of low grade, be currently the plasticizing that many producers make of single screw extrusion machine Material, then reforms to double screw extruder and is once granulated, or the plasticizing material that double screw extruder makes, then to single screw extrusion machine Reform and be once granulated.

For double screw extruder in the recycled plastic after production crushes, yield is unstable, and prominent is to yield poorly, main at present If the granular size of the plastics crushed differs, it is same configuration in double screw extruder, produces regular particulate material yield Normally, produce the plastics yield of crushing with regard to low, recycled plastic have to pass through crushing after reproduction, and crush after recycled plastic Graininess is poor, small to have one centimetre into powder, big diameter, is all much loose parabolic situation, and extruder seems in production Charging is more, and few once melting, the product material really produced is few, is much one forced feed machine of increase, i.e., in cylinder The entrance of body installs a helical blade bar, material is promoted cylinder with the blade of rotation, also other useful forcing methods enter Row feeding.

The one side of the propulsion spiral shell rib of the engagement thread bush fed in the market in double screw extruder, by circular arc spiral shell rib Straight spiral shell rib is changed to, In Nanjing producer is referred to as " SK " serial thread bush, promotes crushing plastics to enter cylinder using straight spiral shell rib more Body, it is that this section for improving actual swivel nut circular arc only eliminates a thirtieth, right angle is made into by fillet, for more chargings And unobvious, while this advanced features of twin-screw thread bush circular arc engagement are destroyed again.

The content of the invention

The present invention disclose a kind of 8 word holes, one circular arc oblique angle of expansion of cylinder charging aperture by double screw extruder, allows thing When material falls feed openings, partial material is entered in circular arc oblique angle, when the screw rod rotary feeding in the word hole of cylinder 8, also circular arc Material in oblique angle is brought into the word hole of cylinder 8, reaches the purpose of quick more chargings.

The present invention use as scheme, at feed openings (2) place of the feed openings cylinder (1) of double screw extruder, Charging circular arc oblique angle (3), two circular arc intersection self-assembling formation beveled tip angles are expanded into above import to 8 word holes (4) (5), circular arc oblique angle (3) are the circular arcs sideling expanded in two round openings in 8 word holes (4), and the angle at oblique angle is big and length Long, the material material quickly entered is just more, and angle of bevel is small and length is short, and the material entered is just few.

By such setting, sky is expanded in feedstock direction circular hole of the opening cylinder in 8 word holes of double screw extruder Between, when material drops into the opening of cylinder, a part of material drops into the charging oblique angle of expansion naturally, when screw rod rotate, naturally just This partial material is also brought into 8 word holes (4) of cylinder, is reached quick and is entered material more, the angle that oblique angle is set is big, what length was set Long, the material entered is more.

Brief description of the drawings

Accompanying drawing 1 is the sectional structure chart of more feed openings cylinders, and (1) is feed openings cylinder in figure, and (2) are entering for cylinder Material opening, (3) are circular arc charging oblique angles, and (4) are 8 word holes, and (5) are beveled tip angles.

Specific implementation method

More its cylinder of feed openings cylinder (1) used in quick more chargings of double screw extruder are in itself with common cylinder Equally make, after feed openings (2) completion, increase by a procedure, on two circular holes in 8 word holes (4), expand boring two Feed circular arc oblique angle (3), two circular arc oblique angles (3), which bore, comes, natural to form beveled tip angle (5) in two circular arc intersections, and this is together Process needs to make a frock, is easy to complete in boring machine or machining center, and the little recruitment of cost is few, but uses In plastics-production, output increased is a lot.It is big to feed the angle that circular arc oblique angle (3) are set, oblique angle length is grown, and enters in this angle Material it is just more, the material brought into of screw rod rotation is just more, it is on the contrary enter material just less, current plastics variety has as many as million kinds, Requirement of the various plastics in production is also different, is divided with production yields, just has numerous rank, for requiring yield height Plastics, particularly suitable this technology, and to increase charging rank refine, i.e., selection set circular arc oblique angle (3) angle Spend size and the length at oblique angle.

This technology is enlarged into a circular arc oblique angle, its work in the entrance of the cylinder of double screw extruder to 8 word holes Skill is simple, and increased workload is also few, but the effect reached is big, can reach original 3 times of charging effect, In Nanjing " SK " the serial thread bush made avoids the need for using.

Warp-wise high-speed double-screw stem extruder develops plastic industry, and production its purpose to virgin material is exactly to improve yield, this Technology is just applicable this kind of type so that this kind of high-speed double-screw stem extruder increase inlet amount is secure.Present recycled plastic reconstruction Grain, reprocessing is more and more, and recycled plastic is granulated again after having to pass through crushing, and the graininess of crushed material is poor, small into powder, Big diameter has one centimetre, and this technology can improve the inlet amount of this kind of crushed material, reaches production yields raising.More feed openings Cylinder has a wide range of application, and the production of all standing virgin material and reclaimed materials production, is attained by raising production yields.

Claims (1)

1. The cylinder of feed openings more than 1. it is characterized in that；At feed openings (2) place of feed openings cylinder (1), 8 word holes (4) are entered Charging circular arc oblique angle (3) is expanded into above mouthful, two circular arc intersection self-assembling formation beveled tip angles (5), circular arc oblique angle (3) are The circular arc sideling expanded in two round openings in 8 word holes (4), the angle at oblique angle is big and length is grown, the material material quickly entered Just more, angle of bevel is small and length is short, and the material entered is just few.