CN204036802U - The single-screw extruder of threaded machine barrel - Google Patents

The single-screw extruder of threaded machine barrel Download PDF

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Publication number
CN204036802U
CN204036802U CN201420532565.XU CN201420532565U CN204036802U CN 204036802 U CN204036802 U CN 204036802U CN 201420532565 U CN201420532565 U CN 201420532565U CN 204036802 U CN204036802 U CN 204036802U
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CN
China
Prior art keywords
district
machine barrel
pitch
iith
screw rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420532565.XU
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Chinese (zh)
Inventor
王利刚
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Individual
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Individual
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Publication date
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Priority to CN201420532565.XU priority Critical patent/CN204036802U/en
Application granted granted Critical
Publication of CN204036802U publication Critical patent/CN204036802U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The single-screw extruder of threaded machine barrel of the present utility model, relate to a kind of plastic extruder, by machine barrel, screw rod and decelerator are formed, the screw rod be connected with decelerator is equipped with in described machine barrel inside, screw rod is divided into three districts, Ith district is feeding and plasticizing zone, IIth district is mixing district, IIIth district is homogenizing and anallobar, be provided with between Ith district and IIth district without threaded area, Ith district, the spiral shell in IIth district and IIIth district is deeply equal, the pitch in Ith district is greater than the pitch in IIth district, the pitch in IIth district is greater than the pitch in IIIth district, the inwall of machine barrel is provided with helicla flute, the outer wall of machine barrel is provided with heating jacket, machine barrel is equipped with hopper.The utility model sets up helicla flute at machine tube inner wall, material is heated up more even, be conducive to the plasticizing of plastics, make mixing more even, the airfoil structure of its uniqueness, when forefront pressure is too high, also can ensure that the adverse current of stream is very little, its screw rod set up without threaded area, facilitate the discharge of molten plastic internal gas, make mixing more fully, evenly.

Description

The single-screw extruder of threaded machine barrel
Technical field
The utility model relates to plastic extruder, particularly relates to a kind of single-screw extruder of threaded machine barrel.
Background technology
At present, single-screw extruder, with its advantage such as low cost of manufacture, long service life, is widely used in plastics-production field.But existing single-screw extruder, often occur being vented the problems such as incomplete in uneven, mixing insufficient, the material of heating material, in order to address these problems, people can only lengthen the length of machine barrel, increase heating material and mixing time, and then produce qualified product, but once lengthen machine barrel, the production time will extend, equipment cost increases, and then substantially increase production cost, bring certain economic loss to enterprise.
Summary of the invention
The utility model, for above-mentioned the deficiencies in the prior art, provides a kind of single-screw extruder of threaded machine barrel.
The single-screw extruder of threaded machine barrel of the present utility model, be made up of machine barrel, screw rod and decelerator, the screw rod be connected with decelerator is equipped with in described machine barrel inside, screw rod is divided into three districts, Ith district is feeding and plasticizing zone, IIth district is mixing district, IIIth district is homogenizing and anallobar, be provided with between Ith district and IIth district without threaded area, the spiral shell in Ith district, IIth district and IIIth district is deeply equal, the pitch that the pitch in Ith district is greater than the pitch in IIth district, the pitch in IIth district is greater than IIIth district, and the inwall of machine barrel is provided with helicla flute, the outer wall of machine barrel is provided with heating jacket, and machine barrel is equipped with hopper.
As further improvement of the utility model, the machine barrel between described I district and IIth district is provided with steam vent.
As further improvement of the utility model, its cross section of spiral wall of described helicla flute both sides is aerofoil profile.
As further improvement of the utility model, the pitch in described screw rod II district is the pitch in 2/3rds, III district of I district's pitch is 2/3rds of II district's pitch.
The single-screw extruder of threaded machine barrel of the present utility model, helicla flute is set up at the inwall of machine barrel, add the heating surface (area) (HS of material, material is heated up more even, and extend the time of staying of plastics in screw rod, be conducive to the plasticizing of plastics, add the shearing force suffered by plastics under molten condition simultaneously, make mixing more even, the airfoil structure of its uniqueness, when forefront pressure is too high, also can ensure that the adverse current of stream is very little, its screw rod set up without threaded area, facilitate the discharge of molten plastic internal gas, make mixing more fully, evenly.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is aerofoil profile spiral wall sectional view of the present utility model.
Detailed description of the invention
As shown in Figure 1, the single-screw extruder of threaded machine barrel of the present utility model, be made up of machine barrel 1, screw rod 2 and decelerator 3, the screw rod 2 be connected with decelerator 3 is equipped with in described machine barrel 1 inside, and machine barrel 1 other end has installed mould.Decelerator 3 passes through belt drive by motor, and then drive screw rod 2 to rotate, screw rod 2 is divided into three districts, Ith district is feeding and plasticizing zone, IIth district is mixing district, IIIth district is homogenizing and anallobar, be provided with between Ith district and IIth district without threaded area 4, the discharge of gas in material is more conducive to without threaded area 4, machine barrel 1 between Ith district and IIth district is provided with steam vent 8, described is corresponding with the position of steam vent 8 without threaded area 4, Ith district, the spiral shell in IIth district and IIIth district is deeply equal, wherein the pitch in screw rod 2 II district is 2/3rds of I district's pitch, the pitch in IIIth district is 2/3rds of II district's pitch, screw rod 2 is mainly plastified material fully by the change of pitch, mixing and supercharging, the inwall of machine barrel 1 is provided with the helicla flute 5 matched with screw rod 2, its cross section of spiral wall 9 of helicla flute 5 both sides is aerofoil profile (as Fig. 2), the aerofoil profile helicla flute 5 set up can extend the time of staying of plastics in screw rod, be conducive to the plasticizing of plastics, add the shearing force suffered by plastics under molten condition simultaneously, make mixing more even, even forefront pressure is too high, also can ensure that the adverse current of stream is very little, the outer wall of machine barrel 1 is provided with heating jacket 6, more be conducive to the melting of material and mixing, the hopper 7 that machine barrel 1 is installed is charging aperture.

Claims (4)

1. the single-screw extruder of threaded machine barrel, by machine barrel (1), screw rod (2) and decelerator (3) are formed, it is characterized in that the screw rod (2) be connected with decelerator (3) is equipped with in described machine barrel (1) inside, screw rod (2) is divided into three districts, Ith district is feeding and plasticizing zone, IIth district is mixing district, IIIth district is homogenizing and anallobar, be provided with without threaded area (4) between Ith district and IIth district, Ith district, the spiral shell in IIth district and IIIth district is deeply equal, the pitch in Ith district is greater than the pitch in IIth district, the pitch in IIth district is greater than the pitch in IIIth district, the inwall of machine barrel (1) is provided with helicla flute (5), the outer wall of machine barrel (1) is provided with heating jacket (6), hopper (7) machine barrel (1) is equipped with.
2. the single-screw extruder of threaded machine barrel as claimed in claim 1, is characterized in that the machine barrel (1) between Ith district and IIth district is provided with steam vent (8).
3. the single-screw extruder of threaded machine barrel as claimed in claim 1, is characterized in that spiral wall (9) its cross section of helicla flute (5) both sides is aerofoil profile.
4. the single-screw extruder of threaded machine barrel as claimed in claim 1, is characterized in that the pitch in screw rod (2) II district be the pitch in 2/3rds, III district of I district's pitch is 2/3rds of II district's pitch.
CN201420532565.XU 2014-09-17 2014-09-17 The single-screw extruder of threaded machine barrel Expired - Fee Related CN204036802U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420532565.XU CN204036802U (en) 2014-09-17 2014-09-17 The single-screw extruder of threaded machine barrel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420532565.XU CN204036802U (en) 2014-09-17 2014-09-17 The single-screw extruder of threaded machine barrel

Publications (1)

Publication Number Publication Date
CN204036802U true CN204036802U (en) 2014-12-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420532565.XU Expired - Fee Related CN204036802U (en) 2014-09-17 2014-09-17 The single-screw extruder of threaded machine barrel

Country Status (1)

Country Link
CN (1) CN204036802U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110901018A (en) * 2019-12-10 2020-03-24 湖南工业大学 Double-end electric vacuum pumping device for mixing extrusion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110901018A (en) * 2019-12-10 2020-03-24 湖南工业大学 Double-end electric vacuum pumping device for mixing extrusion

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141224

Termination date: 20150917

EXPY Termination of patent right or utility model