CN105599166B - Molding multiscrew extrusion device and method of refining are refined for regnerated rubber powder - Google Patents
Molding multiscrew extrusion device and method of refining are refined for regnerated rubber powder Download PDFInfo
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- CN105599166B CN105599166B CN201510988796.0A CN201510988796A CN105599166B CN 105599166 B CN105599166 B CN 105599166B CN 201510988796 A CN201510988796 A CN 201510988796A CN 105599166 B CN105599166 B CN 105599166B
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- Prior art keywords
- screwing element
- shearing
- conveying
- rubber powder
- pitch
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
- B29C48/402—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 the screws having intermeshing parts
-
- 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
-
- 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
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
Abstract
The present invention relates to molding multiscrew extrusion device and regeneration method is refined for regnerated rubber powder, the arrangement of structure, product word structure or cylindrical structure in the same direction/anisotropic parallel is carried out using special screw rod.It by the decomposition acted on traditional handicraft, realizes that ground rubber is closed, continuous refining is molded using various forms of screwing elements, effectively prevents that traditional open production technology is seriously polluted, efficiency low-intensity is big and the disadvantages such as the degree of automation is low.
Description
Technical field
The present invention relates to one kind refining molding multiscrew extrusion device and method of refining for regnerated rubber powder, belongs to useless
Rubber recycling field.
Background technology
With the high speed development of world economy, China has become maximum rubber-consumer state in the world, while being also generation
Maximum waste old generates state in boundary, and China's crude rubber resource is very short, and 2014 are only natural rubber with regard to import 4,200,000
Ton, rubber supply balances the demand contradiction.And effective supplement of the reclaimed rubber as rubber raw materials, have become indispensable the third-largest
Rubber raw materials system, therefore, recycling for waste old have very important significance to the development of China's rubber industry.
With the implementation of national environmental protection policy, production equipment, the technique of traditional low-side backwardness, which have been in, eliminates present situation.Mesh
The refining pugging mullering processing of ground rubber mostly uses greatly the essence of traditional " three machines, one line " or " four machines, one line " in preceding reclaimed rubber industry
Sheet mode is produced, the reclaimed rubber of processing performance and excellent in mechanical performance is obtained；But this intermittent mode of production automation
Degree is low, labor intensity is big, low production efficiency, open production flue gas emission Yan Chong Alto, technology low side and there are serious peaces
Full hidden danger.Thus it is guaranteed that ground rubber is closed, the molding of the refining pugging mullering of continuous and automatic, the performance of reclaimed rubber can be improved, together
Shi Tigao production efficiencys ensure production environment and safety of workers, are the key technology and research emphasis that waste old recycles.
Invention content
In order to solve the disadvantage that it is above-mentioned occur in the prior art, first purpose of the invention is to provide a kind of for regenerating rubber
The screw rod of rubber powder refining, including squeeze transportation section, shearind section and shearing transportation section；It includes the first conveying spiral shell to squeeze transportation section successively
Texel part, the second conveying screwing element, third convey screwing element, and the screw pitch relationship of three kinds of conveying screwing elements is as follows：First
It conveys 1 ＞ second of screwing element pitch P and conveys 2 ＞ thirds conveying screwing element pitch P 3 of screwing element pitch P, conveying screw thread member
At least one first shearing screwing element is set between part；Wherein first conveying screwing element is steep-pitch thread element, is conducive to
Powdery ground rubber delivers into inside screw extruder, by the first shearing a degree of shearing of screwing element, then into
The the second conveying screwing element for entering fine pitch, squeezes powdery bulk material, then use the first shearing elements, smaller successively
The third of screw pitch conveys screwing element, and reciprocating makes powdery ground rubber squeeze accurate, is conducive to the strength of lower road shearind section
Shearing；P2：P1=1/5-1/2, P3：P2=1/5-1/2.The screw pitch of conveying screwing element often saves gradual with the degree of 1/5-1/2
Reduce, addition shearing elements in centre are more advantageous to crushing failure at high speed powdery ground rubber.Shearind section includes at least one second shearing
Screwing element and the 4th conveying screwing element, also optional and reverse-flight elements, mixing screwing element, strong shear screw thread
Element carries out arbitrary combination, the 4th 4≤P3 of conveying screwing element pitch P；Reverse-flight elements have for conveying screwing element will
Partial material applies reversed active force, so that material is returned in anterior member and is acted on simultaneously with subsequent material, is played mixed
The effect of conjunction is conducive to the uniformity of material mixing and shearing in this way；While mixing screwing element can keep certain shearing force,
Increase mixing immixture, improves shearind section mixing, shear action；Strong shear screwing element is multiple strong shear element strings
Connection forms (90 °/60 °/45 °), Z can be continuously maintained the shearing to material, ensures that screw rod acts on the refining of regeneration feed, pugging mullering,
Material Mooney viscosity is effectively reduced, plasticity and processability are increased.Reverse thread, the combination of mixing screw thread can effectively improve sizing material and exist
It is acted on mixing, mixing in extruder, is uniformly mixed, improves sizing material tack, be conducive to height of the strong shear screw thread to sizing material
Effect shearing, the effect of pugging mullering, and due to having efficient mixed function, make sizing material that uniform and stable shearing, quality can be obtained
More preferably stablize, such triplicity is better.It shears transportation section and screwing element and the 5th conveying is sheared by least one third
Screwing element is alternate to be composed in series, the 5th 5≤P4 of conveying screwing element pitch P；Shear supplement of the screw thread realization to front end material
Shearing, continuously decreases Mooney viscosity, improves the plasticity of sizing material, and continually and steadily material is conveyed to hypomere from conveying screw thread, reciprocal more
It is secondary, it realizes that the measurement of head material is evenly supplied, makes formed product dimensionally stable, reliable in quality.Second shearing screwing element, third
It shears screwing element and the first shearing screwing element is identical or different.
Second object of the present invention be to provide it is a kind of regnerated rubber powder is carried out to refine molding multiscrew extrusion device,
The arrangement of structure, product word structure or cylindrical structure in the same direction/anisotropic parallel is carried out using above-mentioned screw rod.By acting on traditional handicraft
Decomposition, realize that ground rubber is closed, continuous refining is molded using various forms of screwing elements, effectively prevent conventional open
Formula production technology is seriously polluted, efficiency low-intensity is big and the disadvantages such as the degree of automation is low.Multiscrew and single, double screw rod ratio
Compared with, production capacity big advantage more with region of engagement.Multiscrew region of engagement is more, often increases a screw rod region of engagement and can be obtained more than 1
The effect of, to realize the three-dimensional shearing of sizing material strength, greatly improved in the case of identical draw ratio screw rod to the shearing of sizing material,
Pugging mullering effect improves production efficiency, reduces equipment manufacturing cost and workshop investment.
Third object of the present invention is to provide a kind of systems refined to regnerated rubber powder, including metering feeding system
System, cutting system, cooling system and refrigeration system；The cutting system squeezes out dress using multiscrew as claimed in claim 4
It sets；The adjuvants metering feeding system is cone double-screw feeding device.Preferably：The refrigeration system is cooling-water machine.Preferably：
The cooling system is located at outside multi-screw extruder machine barrel.
Fourth object of the present invention is to provide the method refined to regnerated rubber powder using above system, including walks as follows
Suddenly：
1) 0-80 DEG C of ground rubber is weighed by adjuvants metering feeding system by feeding frequency and feeding current control
The feeding of material；
2) material prepares granular reclaimed rubber by multi-screw extruder refining, molding；
3) each area's temperature is maintained at 0-100 DEG C by cooling system and refrigeration system.
The beneficial effects of the invention are as follows：
1) ground rubber is refined using closed extruder replacement open conche, pugging mullering machine-shaping, is carried
High output bas line scientific and technological level, effectively avoids the pollution problem of open processing, while reducing staff and labor intensity；
2) it the effect of multiscrew structure good using effect is engaged, generation 1+1 >=2, realizes to ground rubber triplex strong
Shearing, under the conditions of same draw ratio compared with single twin-screw, is greatly improved production efficiency, while product quality；
3) using conveying screwing element, shearing screwing element, reverse-flight elements, mixing screwing element and strong shear spiral shell
Texel part is combined, and is optimal arrangement, effectively avoids sizing material shearing is uneven quality fluctuation, shearing is caused not enough to cause door
Buddhist nun's viscosity is excessively high, shearing excessively causes sizing material backbone breaking seriously to reduce performance etc., to realize the best essence to ground rubber
Refining, pugging mullering processing, improve the processing performance of reclaimed rubber.
Description of the drawings
Fig. 1 squeezes the simple schematic diagram in transportation section
Fig. 2 shearing elements schematic diagrames
Fig. 3 shearings, conveying screwing element schematic diagram
Fig. 4 reverse-flight elements schematic diagrames
Fig. 5 mixing screwing element schematic diagrames
Fig. 6 strong shear screwing element schematic diagrames
A kind of screw form schematic diagram of Fig. 7 present invention
Fig. 8 single screw rods, twin-screw engage contrast schematic diagram with multiscrew
Wherein, 1,1 ', 1 " is conveying screwing element, and 2,2 ', 2 " be shearing screwing element, and 3 be reverse-flight elements, and 4 are
Mixing screwing element, 5 be strong shear screwing element, and 6 be region of engagement
Specific implementation mode
A kind of screw rod for regnerated rubber powder refining, including squeeze transportation section, shearind section and shearing transportation section；
It includes that the first conveying screwing element 1, second conveys screwing element 1 ', third conveying screw thread member to squeeze transportation section successively
The screw pitch relationship of part 1 ", three kinds of conveying screwing elements is as follows：First 1 pitch P of conveying screwing element, 1 ＞ second conveys screwing element
1 ' pitch P, 2 ＞ thirds convey 1 " pitch P 3 of screwing element, and at least one first shearing screw thread member is arranged between conveying screwing element
Part 2；
Shearind section include it is at least one second shearing screwing element 2 ' and the 4th convey screwing element, it is also optional with it is anti-
Arbitrary combination, the 4th conveying screwing element screw pitch are carried out to screwing element 3, mixing screwing element 4, strong shear screwing element 5
P4≤P3；
Shearing transportation section is conveyed that screwing element is alternate is composed in series by least one third shearing screwing element 2 " with the 5th,
5th 5≤P4 of conveying screwing element pitch P；
Second shearing screwing element 2 ', third shearing screwing element 2 " and the first shearing screwing element 2 are identical or different.
P2：P1=1/5-1/2, P3：P2=1/5-1/2.
Forced shears segment is the arbitrary combination of 90 °/60 °/45 ° shearing screwing elements.
It is a kind of that regnerated rubber powder is carried out to refine molding multiscrew extrusion device, it is carried out using above-mentioned screw rod in the same direction/different
To parallel construction, the arrangement of product word structure or cylindrical structure.
It is a kind of that regenerated system, including adjuvants metering feeding system, cutting system, cooling system and system are carried out to regnerated rubber powder
Cooling system；The cutting system uses above-mentioned multiscrew extrusion device；The adjuvants metering feeding system is cone double-screw feeding device.
The refrigeration system is cooling-water machine.
The cooling system is located at outside multi-screw extruder machine barrel.
The method refined to regnerated rubber powder using above system, is included the following steps：
1) 0-80 DEG C of ground rubber is weighed by adjuvants metering feeding system by feeding frequency and feeding current control
The feeding of material；
2) material prepares granular reclaimed rubber by multi-screw extruder refining, molding；
3) each area's temperature is maintained at 0-100 DEG C by cooling system and refrigeration system.
In addition to the above embodiments, the present invention can also have other embodiment, all using same replacement or equivalent
The technical solution formed is converted, is within the scope of the present invention.
Claims (3)
1. a kind of method to regnerated rubber powder refining, it is characterised in that：Using the system refined to regnerated rubber powder,
The system refined to regnerated rubber powder includes adjuvants metering feeding system, cutting system, cooling system and refrigeration system
System；The cutting system uses multiscrew extrusion device；The adjuvants metering feeding system is cone double-screw feeding device,
The multiscrew extrusion device is used for the screw rod progress structure in the same direction/anisotropic parallel of regnerated rubber powder refining, product word
The arrangement of structure or cylindrical structure,
The screw rod, including squeeze transportation section, shearind section and shearing transportation section；
Squeeze transportation section successively include first conveying screwing element, second conveying screwing element, third convey screwing element, three kinds
The screw pitch relationship for conveying screwing element is as follows：First conveying screwing element pitch P, 1 ＞ second conveys 2 ＞ of screwing element pitch P the
Three convey screwing element pitch Ps 3, and at least one first shearing screwing element is arranged between conveying screwing element；
Shearind section includes at least one second shearing screwing element and the 4th conveying screwing element, with reverse-flight elements, mixing
Screwing element, strong shear screwing element are combined, the 4th 4≤P3 of conveying screwing element pitch P；
Shearing transportation section is conveyed that screwing element is alternate is composed in series by least one third shearing screwing element with the 5th, and the 5th is defeated
Send screwing element pitch P 5≤P4；
Second shearing screwing element, third shearing screwing element are different from the first shearing screwing element；
P2：P1=1/5-1/2, P3：P2=1/5-1/2；
The strong shear screwing element is that 90 °/60 °/45 ° strong shear elements are connected in series；
Specifically comprise the following steps：
1) 0-80 DEG C of ground rubber carries out measurement material by adjuvants metering feeding system by feeding frequency and feeding current control
Feeding；
2) material prepares granular reclaimed rubber by multi-screw extruder refining, molding；
3) each area's temperature is maintained at 0-100 DEG C by cooling system and refrigeration system.
2. a kind of method to regnerated rubber powder refining according to claim 1, it is characterised in that：The refrigeration system is
Cooling-water machine.
3. a kind of method to regnerated rubber powder refining according to claim 1, it is characterised in that：The cooling system position
Outside multi-screw extruder machine barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988796.0A CN105599166B (en) | 2015-12-28 | 2015-12-28 | Molding multiscrew extrusion device and method of refining are refined for regnerated rubber powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988796.0A CN105599166B (en) | 2015-12-28 | 2015-12-28 | Molding multiscrew extrusion device and method of refining are refined for regnerated rubber powder |
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| Publication Number | Publication Date |
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| CN105599166A CN105599166A (en) | 2016-05-25 |
| CN105599166B true CN105599166B (en) | 2018-08-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111286202A (en) * | 2018-12-10 | 2020-06-16 | 中蓝晨光化工研究设计院有限公司 | Continuous preparation process of nano silicon dioxide-polysiloxane composite material |
| CN111300795A (en) * | 2020-02-18 | 2020-06-19 | 山东水发再生资源有限公司 | Preparation of reclaimed rubber is with high-efficient many screws post-processing mechanism |
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| CN102250381A (en) * | 2011-07-22 | 2011-11-23 | 常州大学 | Twin-screw device and method for rubber desulfurization |
| CN202318878U (en) * | 2011-11-10 | 2012-07-11 | 上海金昌工程塑料有限公司 | Screw rod assembly of double-screw extruder |
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| CN104129057A (en) * | 2014-07-17 | 2014-11-05 | 青岛科技大学 | Decrosslinking plasticator for continuous regeneration of rubber waste and processing method thereof |
| CN104690844A (en) * | 2015-03-21 | 2015-06-10 | 南京绿金人橡塑高科有限公司 | Method for preparing granular rubber by adopting three screw rods to continuously extrude devulcanized rubber powder |
| CN204687317U (en) * | 2015-04-21 | 2015-10-07 | 房小明 | A kind of screw rod of intermeshing extruder in the same way processing soft thermoplastic elastomer (TPE) |
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2015
- 2015-12-28 CN CN201510988796.0A patent/CN105599166B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173004A (en) * | 2011-01-25 | 2011-09-07 | 青岛科技大学 | Dual-rotor structure for continuous plastication of block-shaped rubbers and plastication device adopting rotors |
| CN102250381A (en) * | 2011-07-22 | 2011-11-23 | 常州大学 | Twin-screw device and method for rubber desulfurization |
| CN202318878U (en) * | 2011-11-10 | 2012-07-11 | 上海金昌工程塑料有限公司 | Screw rod assembly of double-screw extruder |
| CN203254529U (en) * | 2013-04-26 | 2013-10-30 | 天津东榛橡胶有限公司 | Regenerated rubber refiner |
| CN104129057A (en) * | 2014-07-17 | 2014-11-05 | 青岛科技大学 | Decrosslinking plasticator for continuous regeneration of rubber waste and processing method thereof |
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| CN105599166A (en) | 2016-05-25 |
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