CN207772384U - More feed openings cylinders - Google Patents

Abstract

More feed openings cylinders, at the feed openings (2) of feed openings cylinder (1), two chargings circular arc oblique angle (3) are expanded into the upper surface of the import in 8 word holes (4), two circular arc intersection self-assembling formation beveled tip angles (5), charging circular arc oblique angle (3) is the sideling widened circular arc in two round openings in 8 word holes (4), when production, material is fallen at feed openings (2), partial material is just interior into charging circular arc oblique angle (3), when the material in screw rod turning handle feed openings (2) promotes in 8 word holes, also the material in charging circular arc oblique angle (3) is seen in, reach raising yield, it feeds the angle of circular arc oblique angle (3) greatly and length is long, quickly into material just it is more, the angle for feeding circular arc oblique angle (3) is small short with length, into material it is just few.

Description

More feed openings cylinders

Technical field

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

Background technology

With its superior function, extensive purposes has been contemporary people, contemporary society's various aspects for plastics and its plastic products Indispensable substance, 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 range is also increasingly wider, and the yield of many country's plastics alreadys exceed steel, becomes 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 improves, and new varieties continuously emerge, and plastics also have one A feature, temperature can be plasticized at 200 degree or so, can be granulated after plasticizing, and the product of various needs can be fabricated to, but It is, as the plastic article that plastic products use is scrapped later is also more and more, also a large amount of disposable plastics The characteristics of product is abandoned after, including the waste plastic of the various societies of every country is also more and more, plastics is without putrefaction, no It disappears, the plastics accumulation not disappeared is more, just becomes pollution environment, waste plastics this point is at an evil of society, every country All eliminating this phenomenon.Plastics can recycle, heating again plasticizing manufacture regenerated plastics, the old process in plastics having it is good, very To new plastic can be replaced.

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

The waste plastic of recycling first has to be granulated, and produces various particles, then with particle come manufacture plastic components, at Product.Not of uniform size since the kind of waste plastic differs, not of uniform size by the plastic grain of crushing, small powder is squeezing out 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 plastic is actually only to whole A 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, finished particle standard is not achieved in the particle mixing for squeezing out manufacture, and single screw rod is squeezed The particle for going out machine manufacture is only used for low-grade plastic products, is currently the plasticizing that many producers make of single screw extrusion machine Expect, then reform the plasticizing material of primary granulation or double screw extruder making to double screw extruder, then arrives single screw extrusion machine Reform primary granulation.

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

Currently on the market in the one side of the propulsion spiral shell rib of the engagement thread bush of double screw extruder charging, by arc-shaped spiral shell rib It is changed to straight spiral shell rib, In Nanjing producer is referred to as " SK " serial thread bush, pushes crushing plastics into cylinder using straight spiral shell rib more Body, only this section for improving practical swivel nut circular arc only eliminate a thirtieth, right angle is made by fillet, for feeding more It is not obvious, while destroying this advanced features of twin-screw thread bush circular arc engagement again.

Invention content

The present invention discloses a kind of 8 word holes expansion, one charging circular arc oblique angle of the cylinder feed inlet by double screw extruder, When material being allowed to fall feed openings, partial material enters in charging circular arc oblique angle, when the screw rod rotary feeding in 8 word hole of cylinder, Also the material in charging circular arc oblique angle is brought into 8 word hole of cylinder, achievees the purpose that quickly more chargings.

The present invention uses such scheme, at the feed openings (2) of the feed openings cylinder (1) of double screw extruder, One charging circular arc oblique angle (3), two circular arc intersection self-assembling formation beveled tip angles are expanded into the upper surface of the import in 8 word holes (4) (5), charging circular arc oblique angle (3) is the sideling widened circular arc in two round openings in 8 word holes (4), the angle at oblique angle greatly and Length is long, quickly into material material it is just more, angle of bevel is small and length is short, into material just lack.

Setting in this way expands sky 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 is dropped into naturally in widened charging circular arc oblique angle, when screw rod rotation, certainly So just this partial material is also brought into 8 word holes (4) of cylinder, is reached quickly mostly into material, the angle of oblique angle setting is big, length The length of setting, into material it is more.

Description of the drawings

Attached drawing 1 is the side, sectional structure chart of more feed openings cylinders, and (1) is feed openings cylinder in figure, and (2) are cylinders Feed openings, (3) are charging circular arc oblique angles.

Attached drawing 2 is that topology view is cutd open in the front of more feed openings cylinders, and (4) are 8 word holes in figure, and (5) are beveled tip angles.

Specific implementation mode

Quick more feed openings cylinder (1) its cylinder itself fed used in double screw extruder are more with common cylinder It equally makes, after feed openings (2) completion, increases by a procedure, on two circular holes in 8 word holes (4), expand boring two It feeding circular arc oblique angle (3), two chargings circular arc oblique angle (3), which bore, comes, natural to form beveled tip angle (5) in two circular arc intersections, this One procedure needs to make a tooling, is easy to complete in boring machine or machining center, and the little recruitment of cost is few, but It is used in plastics-production, there are many output increased.The angle for feeding circular arc oblique angle (3) setting is big, and oblique angle length is long, this angle It is interior into material it is just more, the material brought into of screw rod rotation is just more, it is on the contrary into material just less, current plastics variety have million kinds it More, requirement of the various plastics in production is also different, is divided with production yields, just has numerous rank, for requiring to produce High plastics, particularly suitable this technology are measured, and the rank for increasing charging is refined, is i.e. selection setting charging circular arc oblique angle (3) length of angular dimension and oblique angle.

This technology is enlarged into a charging circular arc oblique angle in the entrance of the cylinder of double screw extruder to 8 word holes (3), simple for process, increased workload is also few, but the effect reached is big, can reach original 3 times of charging effect, There is no need to use for " SK " serial thread bush that In Nanjing makes.

Warp-wise high-speed double-screw stem extruder develops plastic industry, and to the production of virgin material, its purpose is exactly to improve yield, this Technology is just applicable in this kind of type so that it is secure that this kind of high-speed double-screw stem extruder increases inlet amount.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 at 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 are attained by raising production yields.

Claims (1)

1. Feed openings cylinder more than 1., it is characterized in that：At the feed openings (2) of feed openings cylinder (1), to 8 word holes (4) into The upper surface of mouth is expanded into two chargings circular arc oblique angle (3), two circular arc intersection self-assembling formation beveled tip angles (5), charging circular arc oblique angle (3) be the sideling widened circular arc in two round openings in 8 word holes (4), the angle at oblique angle is big and length is long, quickly into object Material is just more, and angle of bevel is small and length is short, into material just lack.