CN201784158U - High efficiency conical double-screw - Google Patents
High efficiency conical double-screw Download PDFInfo
- Publication number
- CN201784158U CN201784158U CN2010205335954U CN201020533595U CN201784158U CN 201784158 U CN201784158 U CN 201784158U CN 2010205335954 U CN2010205335954 U CN 2010205335954U CN 201020533595 U CN201020533595 U CN 201020533595U CN 201784158 U CN201784158 U CN 201784158U
- Authority
- CN
- China
- Prior art keywords
- section
- screw
- transporting
- spiral shell
- shell rib
- 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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/64—Screws with two or more threads
- B29C48/655—Screws with two or more threads having three or more threads
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a high efficiency conical double-screw, having a charging section, an engagement transporting section, a shunting section, a compressing section, a throttling section and a plasticizing homogenizing section, characterized in that the charging section employs a large-lead single helix and wide flight structure for transporting; the engagement transporting section employs a double helix for dispersing and transporting materials from the charging section into the shunting section; the compressing section is provided with a backflow slot I; the plasticizing homogenizing section is a composite section integrating multi-helical slots and variable pitches of screw and having a length of 40%-55% of the total length of flight sections on the screw; a mixing region on the plasticizing homogenizing section is provided with a backflow slot II, reinforces the plasticization dispersion capability once more and simultaneously effectively makes materials uniformly enter into a booster transporting region. In the utility model, the transporting capability and the plasticization dispersion effect of the whole screw are significantly enhanced, the reasonable distribution of the functional zones is emphasized and the strength of the whole screw is increased.
Description
Technical field
The utility model relates to a kind of high-efficiency taper twin-screw that plastics powder body material extruding pelletization is produced that is used for.
Background technology
The plastics powder body material extruding pelletization of prior art adopts the conical double-screw extrusion efficiency not high, and plasticizing disperses unreasonable; And the configuration of parallel double-screw, regular maintenance cost are too high.The nominal specific power of two types processing is too high between (0.22 to 0.35Kw/ (kg/h)).Just be widely used at present the processing powder body material the conical double screw extruder screw rod structure as shown in Figure 1, comprise that screw rod body 1 is provided with six sections spiral shell ribs altogether on the screw rod body, be respectively feed zone 11, shunting section 12, compression section 13, choke section 14, exhaust section 15, plasticizing homogenizing zone 16, feed zone 11 is the identical spiral shell rib of bispin height, and the length of compression section 13 spiral shell ribs is no more than 15% of all spiral shell rib section total lengths.Use the taper extruder of above-mentioned screw rod mainly to exist production capacity not high, plasticizing disperses unreasonable, causes the Products Quality instability.
Summary of the invention
The utility model main purpose is: it is not high to solve the existing production capacity of prior art, and plasticizing disperses unreasonable, the deficiency of Products Quality, thus develop a kind of high-efficiency taper twin-screw.
The nominal specific power of processing is controlled between 0.05 to 0.12Kw/ (kg/h).
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of high-efficiency taper twin-screw, have feed zone, engagement transportation section, shunting section, compression section, chokes district, plasticizing homogenizing zone, it is characterized in that: described feed zone adopts big helical pitch single-screw, wide spiral shell rib structure to carry; Double helix is adopted in described engagement transportation section, and the material that is used to disperse to transport from feed zone enters shunting section, and the general structure of described shunting section, compression section, three sections type screw rods that maintain the standard of choke section reduces difficulty of processing, only does in detail to change.Described compression section has backflash one; Described plasticizing homogenizing zone for revolving the composite log that screw channel and multiple different pitch are combined into one more, accounting for screw rod has the 40%-55% of spiral shell rib section total length, and described plasticizing homogenizing zone is by realizing that the function difference is divided into exhaust delivery area, banburying district, the delivery area of boosting, homogenization zone, pressurize delivery area; Described banburying district has backflash two, and the enhancing plasticizing dispersibility as once more simultaneously makes material enter the delivery area of boosting equably effectively, and is coherent with the spiral shell rib in front and back district, has improved the intensity of whole screw rod effectively.
The technical solution of the utility model can also be further perfect:
As preferably, described feed zone helical pitch be a little diameter of screw rod 0.7-1.5 doubly, the spiral shell rib is 25% to 50% of a helical pitch.
As preferably, described feed zone single-screw is initial from the screw rod end to be finished to 5-10 circle spiral shell rib.
As preferably, described banburying district backflash two accounts for the 40%-55% that screw rod has spiral shell rib section total length.
The beneficial effects of the utility model: owing to adopt technique scheme, no matter be the conveying capacity of whole screw rod, still the effect of plasticizing dispersion all increases significantly, pay attention to the reasonable distribution of functional areas simultaneously, improve the intensity of whole screw rod, excellent its is the specific material processing request of striving plastics in synthetic.
Description of drawings
Accompanying drawing 1 is a kind of screw-rod structure figure of prior art;
Accompanying drawing 2 is a kind of main structure body figure of the present utility model;
Accompanying drawing 3 is the feed zone spiral shell rib structure charts among Fig. 2;
Accompanying drawing 4 is the compression section 524 backflash cross section structure figure among Fig. 2;
Accompanying drawing 5 is the banburying district cross section structure figure in the plasticizing homogenizing zone of Fig. 2.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is further described in detail.
As Fig. 2 to high-efficiency taper twin-screw shown in Figure 5, conical double-screw is integrated into feed zone 521, engagement transportation section 522, shunting section 523, compression section 524, chokes district 525,526 6 function sections of plasticizing homogenizing zone, and specifically acts on the structural design of having segmented functional areas by functional areas.The structure screw rod that feed zone 521 adopts big helical pitch single-screw, spiral shell rib to widen is carried; Described big helical pitch is 0.7-1.5 a times of a little diameter of screw rod; The described spiral shell rib of widening is 25% to 50% of a helical pitch; Described single-screw section start is that the end of 5-10 circle spiral shell rib is arrived in the end.Double helix is adopted in engagement transportation section 522, and the material that is used to disperse to transport from feed zone enters shunting section 523.It is 1:1.2-1.5 that shunting section 523, compression section 524 form compression ratio with choke section 525; Length is the whole 10%-15% that spiral shell rib section total length is arranged, control plasticizing divergent function; Compression section 524 has backflash 1; Exhaust and plasticizing homogenizing zone 526 for revolving the composite log that screw channel and multiple different pitch are combined into one more; Exhaust and plasticizing homogenizing zone 526 are for there being the 40%-55% of spiral shell rib section total length; Exhaust and plasticizing homogenizing zone 526 are by realizing different negative pressure transportation district 5261, banburying district 5262, the delivery area 5263 of boosting, homogenization zone 5264, the pressurize delivery areas 5265 of being divided into of function, banburying district 5262 wherein has backflash 2 52621 as strengthening the plasticizing dispersibility once more, simultaneously make material enter the delivery area 5263 of boosting equably effectively, link up with the spiral shell rib in front and back district, improved the intensity of whole screw rod effectively.
Claims (4)
1. high-efficiency taper twin-screw, have feed zone (521), engagement transportation section (522), shunting section (523), compression section (524), chokes district (525), plasticizing homogenizing zone (526), it is characterized in that: described feed zone (521) adopts the wide spiral shell rib of big helical pitch single-screw structure; Described compression section (524) has backflash one (5241); Described plasticizing homogenizing zone (526) for revolving the composite log that screw channel and multiple different pitch are combined into one more, accounting for screw rod has the 40%-55% of spiral shell rib section total length, described plasticizing homogenizing zone includes banburying district (5262), and described banburying district has backflash two (52621).
2. high-efficiency taper twin-screw according to claim 1 is characterized in that: described feed zone (521) helical pitch is 0.7-1.5 a times of a little diameter of screw rod, and the spiral shell rib is 25% to 50% of a helical pitch.
3. high-efficiency taper twin-screw according to claim 1 and 2 is characterized in that: described feed zone (521) single-screw is initial from the screw rod end to be finished to 5-10 circle spiral shell rib.
4. high-efficiency taper twin-screw according to claim 1 and 2 is characterized in that: described banburying district (5262) backflash two (52621) accounts for the 40%-55% that screw rod has spiral shell rib section total length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205335954U CN201784158U (en) | 2010-09-19 | 2010-09-19 | High efficiency conical double-screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205335954U CN201784158U (en) | 2010-09-19 | 2010-09-19 | High efficiency conical double-screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201784158U true CN201784158U (en) | 2011-04-06 |
Family
ID=43816135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205335954U Expired - Fee Related CN201784158U (en) | 2010-09-19 | 2010-09-19 | High efficiency conical double-screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201784158U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896760A (en) * | 2012-10-19 | 2013-01-30 | 无锡市百顺机械厂 | Extruder screw |
-
2010
- 2010-09-19 CN CN2010205335954U patent/CN201784158U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896760A (en) * | 2012-10-19 | 2013-01-30 | 无锡市百顺机械厂 | Extruder screw |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20160919 |