CN205112339U - Extruder - Google Patents
Extruder Download PDFInfo
- Publication number
- CN205112339U CN205112339U CN201520899353.XU CN201520899353U CN205112339U CN 205112339 U CN205112339 U CN 205112339U CN 201520899353 U CN201520899353 U CN 201520899353U CN 205112339 U CN205112339 U CN 205112339U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- extruder
- external screw
- hole
- drive unit
- 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.)
- Active
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides an extruder, extruder includes: interior screw rod is for single screw rod of rotation in a circumferential direction while reciprocating axially, outer screw rod, for the rotation in a circumferential direction but single screw rod of axial fixity and outer screw rod is cavity, outer screw rod cover is established outside the interior screw rod, the annular space is located outer screw rod with between the interior screw rod and outer screw rod between rather than the barrel, the through -hole sets up and the intercommunication on the outer screw rod the annular space. The utility model discloses a novel extruder has higher distribution ability of mixing and the dispersion ability of mixing simultaneously.
Description
Technical field
The utility model relates to a kind of extruder.
Background technology
Extruder is applied very extensive in plastic processing, and the quality of mixing behavior to plastic products of extruder plays a key effect.Existing have two kinds of extruders, is reciprocating single-bolt extruder and single screw extrusion machine respectively.Under identical size and operating condition, the distributive mixing performance of reciprocating single-bolt extruder is higher than single screw extrusion machine, level of shear in single screw extrusion machine is higher than reciprocating single-bolt extruder, namely the distributive mixing performance of reciprocating singe screw pin extruder is good, and the dispersive property of single screw extrusion machine is good.But, at present, distributive mixing performance and all good extruder of dispersive property but can not be obtained.
In sum, there is following problem in prior art: existing extruder cannot meet distributive mixing performance and dispersive property simultaneously.
Utility model content
The utility model provides a kind of extruder, to solve the problem that existing extruder cannot meet distributive mixing performance and dispersive property simultaneously.
For this reason, the utility model proposes a kind of extruder, described extruder comprises:
Inner screw, the singe screw of axially reciprocating while of for rotating in a circumferential direction;
External screw rod, for rotating in a circumferential direction but the singe screw of axial restraint and described external screw rod is hollow, described external screw rod is set in outside described inner screw;
Machine barrel, is arranged on outside described external screw rod;
Interior annular space, between described external screw rod and described inner screw;
Annular space, between described external screw rod and machine barrel;
Through hole, to be arranged on described external screw rod and to be communicated with described interior annular space and annular space.
Further, the top of described machine barrel is provided with charging aperture, and the bottom of described machine barrel is provided with discharging opening.
Further, described through hole be arranged on described external screw rod outer wall on and the number of described through hole is multiple.
Further, described through hole is arranged in the screw channel of described external screw rod.
Further, described through hole is the perforate of line mode helically, and the length of described through hole is 1/1 to three/4th of described external screw rod circumference.
Further, the inwall of described external screw rod is provided with pin, and inner screw is provided with spiral shell rib.
Further, described inner screw is driven by the first drive unit, and described external screw rod is driven by the second drive unit, described first drive unit and described second drive unit separate.
Further, pin is fixed on external screw rod inwall, is located in the screw channel of described inner screw simultaneously.
Further, the number of described pin is multiple.
Further, described first drive unit and described second drive unit lay respectively at the two ends of described machine barrel.When material enters extruder, first material enters the screw channel interior (i.e. external screw rod) of the singe screw in outside, owing to external screw rod having the through hole communicated with fro inside formula singe screw (i.e. inner screw), partial material is entered in the screw channel of inner reciprocating singe screw (i.e. inner screw) by through hole.Two parts material moves respectively in the screw channel that two screw rods are corresponding, the material being positioned at singe screw screw channel (i.e. external screw rod) first experiences larger shear stress field, and first the material being positioned at reciprocating singe screw (i.e. inner screw) screw channel experiences the good flow field of distributive mixing performance.Move after a period of time in respective flow field, by the through hole at rear, material in two screw channels exchanges, make most of material can experience two kinds of flow fields in process, high shear field can be experienced, the flow field that distributive mixing performance is good can also be experienced, thus improve the quality of fabricated product.
In process, material can experience distributed rendering and the good flow field of dispersion mixing simultaneously, improves the mixing behavior of extruder.Because two screw rods control separately, the combination of two screw rods can obtain multiple complex wake, and the controlled range of extruder is increased, and is applicable to the plastic products that processing different process requires.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the extruder of the utility model embodiment;
Fig. 2 is the structural representation of the through hole of the extruder of the utility model embodiment;
Fig. 3 is the pin of the extruder of the utility model embodiment and the structural representation of spiral shell rib;
Fig. 4 is the overall structure schematic diagram of the extruder of the utility model embodiment.
Drawing reference numeral illustrates:
1 inner screw 3 external screw rod 4 machine barrel
11 pin 13 spiral shell ribs
21 interior annular space 23 annular space
31 through hole 32 screw channels
15 first drive unit 35 second drive units
41 charging aperture 42 discharging openings
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and the utility model is described.
As shown in Figure 1, comprise according to the extruder of the utility model embodiment:
Inner screw 1, for rotating axially reciprocating singe screw simultaneously;
External screw rod 3, for rotating but the singe screw of axial restraint and described external screw rod is hollow, described external screw rod 3 is set in outside described inner screw 1; External screw rod and described inner screw rotate simultaneously;
Machine barrel 4, is arranged on outside described external screw rod;
Interior annular space 21, between described external screw rod and described inner screw, annular space 23, between above-mentioned singe screw and machine barrel (between external screw rod and machine barrel);
Through hole 31, to be arranged on described external screw rod 3 and to be communicated with described interior annular space 21 and annular space 23.
Owing to external screw rod having the through hole 31 communicated with fro inside formula singe screw (i.e. inner screw), partial material is made to enter in the screw channel of inner reciprocating singe screw (i.e. inner screw), namely in interior annular space 21 by through hole 31.Two parts material moves respectively in two machine barrels, and first the material being positioned at singe screw machine barrel experiences larger shear stress field, and first the material being positioned at reciprocating singe screw (i.e. inner screw) machine barrel experiences the good flow field of distributive mixing performance.Move in respective flow field after a period of time, by the through hole at its rear, the material in two machine barrels exchanges, and makes most of material can experience two kinds of flow fields in process, can experience high shear field, can also experience the flow field that distributive mixing performance is good.
Further, as shown in Figure 2, described through hole 31 be arranged on described external screw rod 3 outer wall on and the number of described through hole is multiple.Like this, the material in two machine barrels can repeatedly exchange, and makes most of material can experience high shear field and the good flow field of distributive mixing performance in process, and can carry out repeatedly alternately mixing.
Further, as shown in Figure 2, described through hole 31 is arranged on the screw channel 32 of described external screw rod 3.Like this, be on the one hand convenient to have enough width to arrange through hole, on the other hand, screw channel is the flowing of material or mobilely provides guiding.Multiple described through hole interval is even, and such as, two helicla flutes of being often separated by just are provided with a through hole, like this, can increase the frequency of material repeatedly alternately mixing in two flow fields, improve the quality of fabricated product.
Further, as shown in Figure 2, the helically line mode perforate of described through hole 31, in other words, through hole 31 is streamlined or spirality, is conducive to material repeatedly alternately mixing in two flow fields.The projection of through hole 31 on Fig. 2 or external screw rod circumferentially be projected as rectangle.Like this, be convenient to make.The length of described through hole is 1/1 to three/4th of described external screw rod circumference, there to be rational length to hold the turnover of material, controls the flow of material turnover.
Further, as shown in Figure 3, the inwall of described external screw rod 3 is provided with pin 11, inner screw 1 has spiral shell rib (scroll) 13.Spiral shell rib (scroll) 13, for being interrupted spiral shell rib, is along the circumferential direction discontinuous setting.Repeatedly shunt to obtain, improve distributed rendering effect.
Further, described pin 11 is located in the screw channel of described inner screw 1.Interaction between spiral shell rib and pin, generation be high frequency mild method field.Further, the number of described pin is multiple, and spiral shell rib is also multiple for being interrupted spiral shell rib quantity, thus has multiple high frequency mild method field.
Further, as shown in Figure 4, described inner screw 1 is driven by the first drive unit 15, and described external screw rod 3 is driven by the second drive unit 35, described first drive unit and described second drive unit separate.First drive unit and described second drive unit are such as respectively motor.External screw rod and described inner screw are coaxially arranged, and two drive units are arranged on the two ends of screw rod or machine barrel respectively, and the charging aperture 41 of extruder is positioned at the top of machine barrel 4, and the lower position that discharging opening 42 is positioned at machine barrel 4 can be accomplished not interfere with each other like this.The rotating speed of external screw rod and described inner screw controls separately, can identical also can be different.The combination of two screw rods can obtain multiple complex wake, and the controlled range of extruder is increased, and is applicable to the plastic products that processing different process requires.
In the utility model, hopper connects the machine barrel of external screw rod, when material enters extruder from the hopper of charging aperture, first material in hopper enters the screw channel interior (i.e. external screw rod) of outside singe screw, owing to external screw rod having the through hole communicated with fro inside formula singe screw screw channel, partial material is entered in the machine barrel of inner reciprocating singe screw by the first through hole.Two parts material moves respectively in two machine barrels, and first the material being positioned at singe screw machine barrel experiences larger shear stress field, and the material being positioned at reciprocating singe screw machine barrel (i.e. external screw rod) first experiences the good flow field of distributive mixing performance.Move in respective flow field after a period of time, by the second through hole, the material in two machine barrels exchanges.Along extruding direction, singe screw has multiple through hole, the material in two machine barrels can repeatedly exchange, make most of material can experience two kinds of flow fields in process, can high shear field be experienced, the flow field that distributive mixing performance is good can also be experienced, thus improve the quality of fabricated product.Pin will be avoided in the position of through hole, and through hole is opened in the screw channel of external screw rod, helically line mode the same as screw channel perforate, and the size of through hole is 1/1 to three/4th circumferential size.Novel extrusion machine of the present utility model has higher distributed rendering ability and dispersive mixing capability simultaneously.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.For each part of the present utility model can mutually combine under the condition of not conflicting; any those skilled in the art; equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (10)
1. an extruder, is characterized in that, described extruder comprises:
Inner screw, the singe screw of axially reciprocating while of for rotating in a circumferential direction;
External screw rod, for rotating in a circumferential direction but the singe screw of axial restraint and described external screw rod is hollow, described external screw rod is set in outside described inner screw;
Machine barrel, is arranged on outside described external screw rod;
Interior annular space, between described external screw rod and described inner screw;
Annular space, between described external screw rod and machine barrel;
Through hole, to be arranged on described external screw rod and to be communicated with described interior annular space and annular space.
2. extruder as claimed in claim 1, it is characterized in that, the top of described machine barrel is provided with charging aperture, and the bottom of described machine barrel is provided with discharging opening.
3. extruder as claimed in claim 1, is characterized in that, on the outer wall that described through hole is arranged on described external screw rod and the number of described through hole is multiple.
4. extruder as claimed in claim 1, it is characterized in that, the inwall of described external screw rod is provided with pin, and inner screw is provided with spiral shell rib.
5. extruder as claimed in claim 1, it is characterized in that, described through hole is the perforate of line mode helically, and the length of described through hole is 1/1 to three/4th of described external screw rod circumference.
6. extruder as claimed in claim 4, it is characterized in that, described pin is fixed on external screw rod inwall, is located in the screw channel of described inner screw simultaneously.
7. extruder as claimed in claim 1, it is characterized in that, described inner screw is driven by the first drive unit, and described external screw rod is driven by the second drive unit, described first drive unit and described second drive unit separate.
8. extruder as claimed in claim 4, it is characterized in that, described pin is located in the screw channel of described inner screw.
9. extruder as claimed in claim 4, it is characterized in that, the number of described pin is multiple.
10. extruder as claimed in claim 7, it is characterized in that, described first drive unit and described second drive unit lay respectively at the two ends of described machine barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520899353.XU CN205112339U (en) | 2015-11-12 | 2015-11-12 | Extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520899353.XU CN205112339U (en) | 2015-11-12 | 2015-11-12 | Extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205112339U true CN205112339U (en) | 2016-03-30 |
Family
ID=55567981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520899353.XU Active CN205112339U (en) | 2015-11-12 | 2015-11-12 | Extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205112339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105235186A (en) * | 2015-11-12 | 2016-01-13 | 北京石油化工工程有限公司 | Extruder |
-
2015
- 2015-11-12 CN CN201520899353.XU patent/CN205112339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105235186A (en) * | 2015-11-12 | 2016-01-13 | 北京石油化工工程有限公司 | Extruder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105235186A (en) | Extruder | |
| CN204749212U (en) | Mixing extruding machine of coaxial twin -screw of inside and outside screw channel in opposite directions | |
| CN104494103B (en) | A kind of three-screw extruder | |
| CN204749210U (en) | Take hollow screw's extruder | |
| CN104309095A (en) | Double-screw extruder | |
| CN101875233A (en) | Straight conical three-screw extruder | |
| CN205112339U (en) | Extruder | |
| CN102490339A (en) | Screws used in twin-screw foaming extruder | |
| CN105313304A (en) | Hollow single screw extruder with spiral grooves in double sides | |
| CN102225317A (en) | Double-conical-rotor continuous mixing unit | |
| CN101700692A (en) | Special section type double-cone screw extrusion molding device | |
| CN207388264U (en) | Ultra high molecular polyethylene screw barrel | |
| CN102814968B (en) | Plasticizing apparatus for plastics | |
| CN102228818A (en) | Continuous mixing unit with three tapered rotors in triangular arrangement | |
| CN202212120U (en) | Conical tri-rotor continuous mixing unit with triangularly arranged rotors | |
| CN204123647U (en) | Double screw extruder | |
| CN201633185U (en) | Linear cone-shaped three-screw extruder | |
| CN202357423U (en) | Screw used in double-screw foam extruder | |
| CN205705214U (en) | The hollow single screw extrusion machine of inner screw channel formula | |
| CN205219682U (en) | Hollow single screw extruder who has two -sided screw channel | |
| CN205219681U (en) | Hollow single screw extruder of toper | |
| CN201841655U (en) | Triangularly arranged tapered three-screw extruder | |
| CN205969874U (en) | Automatic add look female extruder | |
| CN206561573U (en) | Colour mixture mixing refining head and the mixing colour mixture screw rod using the colour mixture mixing refining head | |
| CN206066913U (en) | Multi-screw extruder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |