CN201784162U - High efficiency conical double-screw - Google Patents
High efficiency conical double-screw Download PDFInfo
- Publication number
- CN201784162U CN201784162U CN2010205336321U CN201020533632U CN201784162U CN 201784162 U CN201784162 U CN 201784162U CN 2010205336321 U CN2010205336321 U CN 2010205336321U CN 201020533632 U CN201020533632 U CN 201020533632U CN 201784162 U CN201784162 U CN 201784162U
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- CN
- China
- Prior art keywords
- section
- screw
- spiral shell
- shell rib
- compression
- 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
-
- 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)
- Processing And Handling Of Plastics And Other Materials For Molding In General (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, and a plasticizing homogenizing section, characterized in that the charging section employs a large-lead single helix and wide flight structure; a double helix is employed in the engagement transportation for dispersing and transporting materials from the charging section into the shunting section; the compressing section is a wholly connected double helix, having variable pitches of screw and integrating double functions of the compressing section and a throttling section; a backflow slot I is provided on a front section of the compressing section; the length of the compression section on which the backflow slot I is provided is 12% - 20% of the total length of the flight sections on the whole screw; a compression ratio of the compression section is 1:1.2 - 2; the plasticizing homogenizing section is a composite section integrating multi-helical slots and variable pitches of screw; a mixing region disposed 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, plasticizing homogenizing zone, it is characterized in that: described feed zone adopts big helical pitch single-screw, wide spiral shell rib structure; Described engagement is carried and is adopted double helix, and the material that is used to disperse to transport from feed zone enters shunting section; Compression section and choke section dual-use function are integrated in described compression section, the double helix that the pitch that links to each other for integral body changes, and guaranteeing has increased thruput under compression and the plasticizing prerequisite; The previous section of compression section has backflash one, and the described length that has backflash one accounts for the 12%-20% that whole screw rod has spiral shell rib section total length, and the compression ratio of described compression section is 1:1.2-2; Described plasticizing homogenizing zone for revolving the composite log that screw channel and multiple different pitch are combined into one more; The plasticizing homogenizing zone is by realizing that the function difference is divided into delivery area, banburying district, the delivery area of boosting, homogenization zone, pressurize delivery area; The banburying district has backflash two in the section, and the enhancing plasticizing dispersibility as has once more simultaneously made 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, described spiral shell rib is wide to be 25% to 50% of helical pitch.
As preferably, described feed zone single-screw encloses till the spiral shell rib from the screw rod end to 5-10.
As preferably, described compression section accounts for the 15%-25% that whole screw rod has spiral shell rib section total length
As preferably, described plasticizing homogenizing zone is the 35%-45% that whole 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, and pays attention to the reasonable distribution of functional areas simultaneously, improves the intensity of whole screw rod.
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 charts 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 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 421, engagement transportation section 422, shunting section 423, compression section 424,425 5 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 421 adopts big helical pitch single-screw, spiral shell rib to widen is carried; Described big helical pitch is 0.7-1.5 times for 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 422, and the material that is used to disperse to transport from feed zone enters shunting section 423.Shunting section 423 is a single-screw spiral shell rib, is mainly used in shunting and makes it enter compression section 424 smoothly from the material of feed zone.Compression section 424 compression ratios are 1:1.2-2, integrate compression section and choke section dual-use function; Length is the whole 15%-25% that spiral shell rib section total length is arranged, and improves the plasticizing divergent function; Compression section 424 is the double helix that the whole pitch that links to each other changes, and guaranteeing has increased thruput under compression and the plasticizing prerequisite; The forward part of compression section 424 has backflash 1, and length is the 12%-20% that spiral shell rib section total length is arranged, and effectively strengthens the plasticizing dispersibility.Plasticizing homogenizing zone 425 for revolving the composite log that screw channel and multiple different pitch are combined into one more; Plasticizing homogenizing zone 425 is for there being the 35%-45% of spiral shell rib section total length; Plasticizing homogenizing zone 425 by realize that the function difference is divided into delivery area 4251, banburying district 4252, the delivery area 4253 of boosting, homogenization zone 4254, pressurize delivery area 4255; Banburying district 4252 wherein has backflash 2 42521, and the enhancing plasticizing dispersibility as once more simultaneously makes material enter the delivery area 4253 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.
Claims (5)
1. high-efficiency taper twin-screw, have feed zone (421), engagement transportation section (422), shunting section (423), compression section (424), plasticizing homogenizing zone (425), it is characterized in that: described feed zone (421) adopts the wide spiral shell rib of big helical pitch single-screw structure; Described compression section (424) is the double helix that the whole pitch that links to each other changes, the previous section of compression section has backflash one (4241), the described length that has backflash one accounts for the 12%-20% that whole screw rod has spiral shell rib section total length, and the compression ratio of described compression section is 1:1.2-2; Described plasticizing homogenizing zone (425) includes banburying district (4252) for revolving screw channel and the composite log that multiple different pitch are combined into one in the section more, and described banburying district has backflash two (42521).
2. high-efficiency taper twin-screw according to claim 1 is characterized in that: described feed zone (421) helical pitch is 0.7-1.5 a times of a little diameter of screw rod, and described spiral shell rib is wide to be 25% to 50% of helical pitch.
3. high-efficiency taper twin-screw according to claim 1 and 2 is characterized in that: described feed zone (421) single-screw encloses till the spiral shell rib from the screw rod end to 5-10.
4. high-efficiency taper twin-screw according to claim 1 and 2 is characterized in that: described compression section (424) account for the 15%-25% that whole screw rod has spiral shell rib section total length.
5. high-efficiency taper twin-screw according to claim 1 and 2 is characterized in that: described plasticizing homogenizing zone (425) has the 35%-45% of spiral shell rib section total length for whole screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205336321U CN201784162U (en) | 2010-09-19 | 2010-09-19 | High efficiency conical double-screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205336321U CN201784162U (en) | 2010-09-19 | 2010-09-19 | High efficiency conical double-screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201784162U true CN201784162U (en) | 2011-04-06 |
Family
ID=43816139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205336321U Expired - Fee Related CN201784162U (en) | 2010-09-19 | 2010-09-19 | High efficiency conical double-screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201784162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555306A (en) * | 2015-09-29 | 2017-04-05 | 青岛海尔智能技术研发有限公司 | A kind of powder automatic release device and washing machine |
-
2010
- 2010-09-19 CN CN2010205336321U patent/CN201784162U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555306A (en) * | 2015-09-29 | 2017-04-05 | 青岛海尔智能技术研发有限公司 | A kind of powder automatic release device and washing machine |
| CN106555306B (en) * | 2015-09-29 | 2020-06-02 | 青岛海尔智能技术研发有限公司 | Automatic powder feeding device and washing machine |
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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 |