CN201808210U - High-efficiency conical double screw rod - Google Patents
High-efficiency conical double screw rod Download PDFInfo
- Publication number
- CN201808210U CN201808210U CN2010205335865U CN201020533586U CN201808210U CN 201808210 U CN201808210 U CN 201808210U CN 2010205335865 U CN2010205335865 U CN 2010205335865U CN 201020533586 U CN201020533586 U CN 201020533586U CN 201808210 U CN201808210 U CN 201808210U
- Authority
- CN
- China
- Prior art keywords
- section
- spiral shell
- screw
- screw rod
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a high-efficiency conical double screw rod which comprises a feeding section, a shunting section, a compression section and a plasticization and homogeneization section and is characterized in that the heights of two screw edge in a double spiral edge of the feeding section are unequal, the height of the screw edge II is lower than that of the screw edge I, and the screw edge I is a standard screw edge; the shunting section is a single spiral edge; the compression section is double helix which are integrally connected and have varied pitches, the compression rate is 1:1.2-2, a reflux groove is arranged at the front part of the compression section, and the length of the reflux groove is 10-20 percent of the total length of the screw rod; the plasticization and homogeneization section is an integrated compound section with a plurality of spiral grooves and various pitches, and the length of the plasticization and homogeneization section is 35-45 percent of the total length of a screw edge section; and a reflux groove is arranged in a mixing region of the plasticization and homogeneization section. In the utility model, both the conveying capability of the whole screw rod and the effect of plasticization dispersion are greatly enhanced, and reasonable distribution of function regions is emphasized, therefore, the intensity of the whole screw rod is strengthened.
Description
Technical field
The utility model relates to a kind of plastics powder body material extruding granulator, relates in particular to a kind of conical double-screw.
Background technology
The plastics powder body material extruding pelletization of prior art generally adopts conical double-screw, and its extrusion efficiency is 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, generally 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, on the screw rod body, be provided with six sections spiral shell ribs altogether, 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, shunting section, compression section, plasticizing homogenizing zone, it is characterized in that: the height of two spiral shell ribs does not wait in the described feed zone bispin spiral shell rib, wherein spiral shell rib two highly is lower than spiral shell rib one, and described spiral shell rib one is a standard spiral shell rib; Described shunting section is a single-screw spiral shell rib; Described compression section is the double helix that the whole pitch that links to each other changes, and compression ratio is 1:1.2-2, and the previous section of compression section has backflash; Described plasticizing homogenizing zone accounts for the 35%-45% that screw rod has spiral shell rib section total length for to revolve screw channel and the composite log that multiple different pitch are combined into one more; Described plasticizing homogenizing zone is divided into delivery area, banburying district, the delivery area of boosting, homogenization zone and pressurize delivery area in order, and described banburying district has backflash, and is coherent with the spiral shell rib in forward and backward district.
The technical solution of the utility model can also be further perfect:
As preferably, described feed zone spiral shell rib two from the screw rod end forward 2-8 circle spiral shell rib initial, finish to 4-12 circle spiral shell rib.
As preferably, described compression section accounts for the 15%-25% that screw rod has spiral shell rib section total length, and the 12%-20% that backflash length accounts for the screw rod total length is opened in described compression section.
As preferably, described plasticizing homogenizing zone accounts for the 35%-45% 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, 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 the screw-rod structure figure of prior art;
Accompanying drawing 2 is the utility model screw rod main body figure;
Accompanying drawing 3 is feed zone spiral shell rib structure charts of Fig. 2;
Accompanying drawing 4 is compression section cross section structure figure of Fig. 2;
Accompanying drawing 5 is banburying district cross section structure figure of 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.
To high-efficiency taper twin-screw shown in Figure 5, be divided into feed zone 21, shunting section 22, compression section 23, plasticizing homogenizing zone 24 as Fig. 2, and specifically act on the structural design of having segmented functional areas by functional areas.The spiral shell rib 2 212 of feed zone 21 bispin spiral shell ribs highly is lower than spiral shell rib one 211 height; The external diameter of spiral shell rib one is the conical double-screw standard size, and the section start of spiral shell rib two is that screw rod end 2-8 circle spiral shell rib forward begins to finish to 4-12 circle spiral shell rib.Shunting section 22 is a single-screw spiral shell rib, is mainly used in the material of shunting from feed zone, makes it enter compression section 23 smoothly.Compression section 23 compression ratios are 1:1.2-2, integrate compression section and choke section dual-use function; Length is the 15%-25% that whole screw rod has spiral shell rib section total length, improves the plasticizing divergent function; Compression section 23 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 23 has backflash 1, and the length that backflash one is arranged is the 12%-20% that spiral shell rib section total length is arranged, and effectively strengthens the plasticizing dispersibility; Plasticizing homogenizing zone 24 for revolving the composite log that screw channel and multiple different pitch are combined into one more; Plasticizing homogenizing zone 24 35%-45% of spiral shell rib section total length is arranged for whole screw rod; Plasticizing homogenizing zone 24 by realize that the function difference is divided into delivery area 241, banburying district 242, the delivery area 243 of boosting, homogenization zone 244, pressurize delivery area 245; Banburying district 242 wherein has backflash 2 2421, and the enhancing plasticizing dispersibility as once more simultaneously makes material enter the delivery area 243 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 (3)
1. high-efficiency taper twin-screw, have feed zone (21), shunting section (22), compression section (23), plasticizing homogenizing zone (24), it is characterized in that: the height of two spiral shell ribs does not wait in described feed zone (21) the bispin spiral shell rib, and wherein spiral shell rib two (212) highly is lower than spiral shell rib one (211); Described shunting section (22) is a single-screw spiral shell rib; Described compression section (23) is the double helix that the whole pitch that links to each other changes, and compression ratio is 1:1.2-2, and the previous section of compression section has backflash one (231), and the described length of driving backflash one accounts for the 12%-20% of screw rod total length; Described plasticizing homogenizing zone (24) for revolving the composite log that screw channel and multiple different pitch are combined into one more, accounting for screw rod has the 35%-45% of spiral shell rib section total length, described plasticizing homogenizing zone (24) includes banburying district (242), and described banburying district has backflash two (2421).
2. high-efficiency taper twin-screw according to claim 1 is characterized in that: described feed zone spiral shell rib two (212) from the screw rod end forward 2-8 circle spiral shell rib initial, finish to 4-12 circle spiral shell rib.
3. high-efficiency taper twin-screw according to claim 1 and 2 is characterized in that: described compression section (23) account for the 15%-25% that screw rod has spiral shell rib section total length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205335865U CN201808210U (en) | 2010-09-19 | 2010-09-19 | High-efficiency conical double screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205335865U CN201808210U (en) | 2010-09-19 | 2010-09-19 | High-efficiency conical double screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201808210U true CN201808210U (en) | 2011-04-27 |
Family
ID=43891154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205335865U Expired - Fee Related CN201808210U (en) | 2010-09-19 | 2010-09-19 | High-efficiency conical double screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201808210U (en) |
-
2010
- 2010-09-19 CN CN2010205335865U patent/CN201808210U/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: 20110427 Termination date: 20160919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |