CN203726796U - Long-short type twin-screw extruder - Google Patents
Long-short type twin-screw extruder Download PDFInfo
- Publication number
- CN203726796U CN203726796U CN201320850522.1U CN201320850522U CN203726796U CN 203726796 U CN203726796 U CN 203726796U CN 201320850522 U CN201320850522 U CN 201320850522U CN 203726796 U CN203726796 U CN 203726796U
- Authority
- CN
- China
- Prior art keywords
- screw
- short
- long
- long bolt
- screw extruder
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/42—Non-identical or non-mirrored screws
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses a long-short type twin-screw extruder. The long-short type twin-screw extruder comprises a barrel, a long screw, a short screw and a hopper, wherein the hopper is arranged at one end of the barrel. The long-short type twin-screw extruder is characterized in that a thread of the short screw and one part of a thread of the long screw are meshed with each other, the long screw and the short screw are aligned at a membrane opening section, one part of the long screw and the whole short screw are meshed with each other and are symmetrical or identical in structure, and the two screws are arranged in the barrel. The long-short type twin-screw extruder disclosed by the utility model has the advantages that the long screw and the short screw are arranged, so that a high molecular material can be subjected to primary plasticizing and then is deeply plasticized, the melting temperature of the whole machine can be reduced by the two methods, and the efficiency and the mixing capacity are improved.
Description
Technical field
The utility model belongs to synthetic fiber spinning field, relates in particular to a kind of length type double screw extruder.
Background technology
Screw extruder can join screw portion through charging aperture by solid materials such as macromolecule pellet or sheet stocks, is molten condition, with for subsequent use through comprehensive functions such as heating and the extruding forces of screw rod by high polymer material plasticizing.The function difference that on extruder screw, zones of different can realize, roughly be divided into film mouth section, homogenizing zone, transportation section, compression section, extruded segment and feeding section etc., double screw extruder is compared the plastifying fusion effect to raw material and quality with single screw extrusion machine and is all wanted better, in prior art, there is a kind of serial type extruder, the processed goods of first order extruder is transported to second level extruder through pipeline and follows degree of depth plastifying fusion, at present also there is no a kind of extruder settling at one go, raw material is carried out to degree of depth plastifying fusion.
Summary of the invention
In order to overcome this problem, the utility model provides a kind of length type double screw extruder of optimizing plastifying fusion condition.
The technical solution of the utility model is to provide a kind of length type double screw extruder, comprise: cylindrical shell, long bolt, short screw and hopper, described cylindrical shell one end is provided with hopper, it is characterized in that, a part of screw thread of the screw thread of described short screw and described long bolt is intermeshing, and described long bolt and short screw are in the alignment of film mouth section, and a part for described long bolt and described short screw are all intermeshing, and symmetrical configuration or identical, described two screw rods is arranged in cylindrical shell.
Preferably, described cylindrical shell is provided with monotubular part and bitubular part, a wherein parallel connection of described monotubular part and the bitubular, and described long bolt is put in the inner, and described short screw is placed in another cylinder of the described bitubular.
Preferably, described long bolt is not arranged in described monotubular with short screw mate, and the pitch of its spiral shell rib is greater than the pitch of mate.
Preferably, two cylinders between the described bitubular are interconnected.
Preferably, described hopper is arranged on described monotubular end.
Preferably, described long bolt and short screw are driven by drive unit.
Length type double screw extruder of the present utility model, arranges one is long and the other is short two screw rods, can tentatively plastify macromolecular material, then degree of depth plasticizing, this kind of two-step method can reduce complete machine melt temperature, raises the efficiency and mixing ability.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment;
In figure: 1. cylindrical shell, 2. long bolt, 3. short screw, 4. hopper, 5. drive unit, 6. monotubular part, 7. bitubular part.
Detailed description of the invention
Below detailed description of the invention of the present utility model is described in further detail.
As shown in Figure 1, a kind of embodiment of the present utility model, comprise: cylindrical shell 1, long bolt 2, short screw 3, hopper 4 and drive unit 5, cylindrical shell 1 comprises monotubular part 6 and bitubular part 7, monotubular part 6 and bitubular part 7 a parallel connection become an entirety, long bolt 2 is placed in this overall space, short screw 3 is placed in another cylinder of bitubular part 7, two screw rods in bitubular part 7 are intermeshing, two screw rods one end in bitubular part 7 is mutually concordant, be positioned at the two screw rods symmetrical configuration of the bitubular, in the same size, the pitch that long bolt 2 is positioned at its spiral shell rib of part of monotubular part 6 is greater than the spiral shell rib pitch of bitubular part 7.
Hopper 4 is arranged on described monotubular part 6 ends, close with long bolt 2 one end, between two of bitubular part (7), is interconnected, and long bolt 2 drives rotation with short screw by drive unit 5.
When the utility model work, solid macromolecule raw material adds extruder through hopper 4, fall into monotubular part 6, the coarse pitch part of long bolt 2 is carried out preparatory processing to raw material, raw material is interior through heating and melting in monotubular part 6, extruding, the preliminary plastifying fusion of quilt after mixing, long bolt 2 is transported in bitubular part 7, then carries out deep processing through the double-screw structure that long bolt 2 and short screw 3 form.
Adopt two step plasticizings to have following beneficial effect:
1) second stage plasticizing effect is better than a plasticizing effect;
2) the overall shearing force of twin-screw and less, and can avoid superheating phenomenon;
3) can reduce the melt temperature of complete machine, reduce energy consumption;
4) improve rotating speed and output and mixing ability.
Above embodiment is only the utility model a kind of embodiment wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (6)
1. length type double screw extruder, comprise: cylindrical shell, long bolt, short screw and hopper, described cylindrical shell one end is provided with hopper, it is characterized in that, a part of screw thread of the screw thread of described short screw and described long bolt is intermeshing, and described long bolt and short screw are in the alignment of film mouth section, and a part for described long bolt and described short screw are all intermeshing, and symmetrical configuration or identical, described two screw rods is arranged in cylindrical shell.
2. length type double screw extruder according to claim 1, it is characterized in that: described cylindrical shell is provided with monotubular part and bitubular part, a wherein parallel connection of described monotubular part and the bitubular, described long bolt is put in the inner, and described short screw is placed in another cylinder of the described bitubular.
3. length type double screw extruder according to claim 2, is characterized in that: described long bolt is not arranged in described monotubular with short screw mate, the pitch of its spiral shell rib is greater than the pitch of mate.
4. length type double screw extruder according to claim 3, is characterized in that: two cylinders between the described bitubular are interconnected.
5. length type double screw extruder according to claim 4, is characterized in that: described hopper is arranged on described monotubular end.
6. length type double screw extruder according to claim 5, is characterized in that: described long bolt and short screw are driven by drive unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850522.1U CN203726796U (en) | 2013-12-23 | 2013-12-23 | Long-short type twin-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850522.1U CN203726796U (en) | 2013-12-23 | 2013-12-23 | Long-short type twin-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203726796U true CN203726796U (en) | 2014-07-23 |
Family
ID=51196900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320850522.1U Expired - Fee Related CN203726796U (en) | 2013-12-23 | 2013-12-23 | Long-short type twin-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203726796U (en) |
-
2013
- 2013-12-23 CN CN201320850522.1U patent/CN203726796U/en not_active Expired - Fee Related
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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: 20140723 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |