CN201702872U - Plasticization and granulation equipment for polyolefin wood-plastic composite material filled with high-share plant fiber - Google Patents
Plasticization and granulation equipment for polyolefin wood-plastic composite material filled with high-share plant fiber Download PDFInfo
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- CN201702872U CN201702872U CN2010201785891U CN201020178589U CN201702872U CN 201702872 U CN201702872 U CN 201702872U CN 2010201785891 U CN2010201785891 U CN 2010201785891U CN 201020178589 U CN201020178589 U CN 201020178589U CN 201702872 U CN201702872 U CN 201702872U
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- plastic composite
- head
- slicing device
- screw
- screw extruder
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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
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
-
- 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
Abstract
The utility model discloses plasticization and granulation equipment for a polyolefin wood-plastic composite material filled with high-share plant fiber. The equipment comprises a parallel double-screw extruder, a slicing device, an induced draught system and a cyclone separation system, wherein the slicing device is open and arranged on a handpiece of the parallel double-screw extruder; the head part of a screw of the parallel double-screw extruder is directly communicated with the atmosphere; the air inlet of the inducted draught system of the equipment is positioned right above the slicing device; and the feed port of the cyclone separation system is positioned under the slicing device. The utility model provides the plasticization and granulation equipment which can be suitable for the polyolefin wood-plastic composite material filled with the high share plant fiber well. The equipment does not cause degradation or carbonization when used for plastifying and granulating the wood-plastic composite material with high plant fiber content.
Description
Technical field
The utility model relates to the plasticizing Granulation Equipments that can prepare the very high wood plastic composite of string content.
Background technology
Wood plastic composite (WPC) is a class environmental protection new material of rising in recent years.The kind of wood plastic composite is more, and wherein polyolefin wood-plastic composite is the wood plastic composite kind of current worldwide production maximum, also is the wood plastic composite kind that has environment protection significance most.Because producing the primary raw material of polyolefin wood-plastic composite is agriculture and forestry organic waste material (as plant fiber powders such as wood powder, bamboo powder, chaff powder, powder of straw) and waste or used plastics (as polyolefin such as polyethylene, polypropylene), its product mainly is used as the substitute of timber, therefore, the exploitation polyolefin wood-plastic composite all has great importance for the comprehensive utilization of agriculture and forestry organic waste material and plastic refuse, pressure and the minimizing deforestation that alleviation is becoming tight natural timber day.
Wood plastic composite has that water absorption rate is low, corrosion resistance by force, do not damage by worms, not easy to crack, series of advantages such as secondary workability is good, its purposes is very extensive, decorates material, building materials, packaging material, automotive trim sheet material etc. as alternative timber as indoor and outdoor.The exploitation of wood plastic composite and development in recent years obtained global extensive attention.
The main method of preparation wood plastic composite is an extrusion moulding, the general process that extrusion moulding prepares wood plastic composite is: earlier raw materials such as string, plastics, additive are mixed, add then and carry out " plasticizing granulation " in the double screw extruder, make plasticizing material (bulk goods or broken material); To plastify material again and add extrusion molding in the twin screw or single screw extruder, make wood plastic composite.In described extrusion moulding, can make string content height, production cost is low, the outward appearance woodiness touch is strong polyolefin wood-plastic composite, " plasticizing granulation " is a vital processing step.
The existing double screw extruder that is used for wood plastic composite plasticizing granulation is generally parallel double-screw extruder or conical double screw extruder, for the plasticizing granulation of polyolefin wood-plastic composite, be good with the plasticizing granulation effect of cocurrent and parallel double screw extruder.In order to make to such an extent that the needed wood plastic composite of extrusion molding plastifies pellet, prior art requires at the head place of double screw extruder pellet device to be housed, and its pellet device is generally " tie rod pellet device " or " flour milling earnestly installs ".
Above-mentioned plasticizing prilling process can only be adapted to the plasticizing granulation of the not too big wood plastic composite of string content usually, and when the string loading is very high in the wood plastic composite (as 60%～90%), this plasticizing prilling process is just inapplicable.Because existing plasticizing Granulation Equipments all need be equipped with the pellet device that a cover seals up head fully on head, as " tie rod pellet device ", " flour milling earnestly installs " etc., when the string loading is very high in the wood plastic composite, owing to the mobile property extreme difference of fused materials is difficult to flow through the existing aperture that seals up the pellet device of head, the result easily makes head pressure bigger than normal and make material cause serious friction and a large amount of adverse currents between barrel and screw rod, and the result easily causes serious variable color, degraded and charing.String content is high more, and this problem is serious more, and therefore, prior art is difficult to make the very high polyolefin wood-plastic composite of string content.
In addition, moisture content that contains in the string and organic volatile are difficult to remove fully in the leading portion operation, therefore need further remove (abbreviation devolatilization) in the plasticizing granulation process, otherwise will influence extrusion molding and product quality.Because moisture content and organic volatile mainly come from string, so the string loading is high more in the wood plastic composite, the content of moisture content and organic volatile is also just many more.And existing plasticizing Granulation Equipments is not ideal for the devolatilization effect of high-share plant fibers filled polyolefin wood plastic composite, because existing plasticizing Granulation Equipments material when pelletizing has been compacted to a certain extent and has cooled off, so that the devolatilization difficulty.This is another difficulty that existing extrusion molding law technology prepares the polyolefin wood-plastic composite of high-share plant fibers filling.
Summary of the invention
For the plasticizing Granulation Equipments that overcomes existing wood plastic composite can not adapt to the very high wood plastic composite plasticizing granulation of string content, and the deficiency that the devolatilization effect is relatively poor, the utility model provide a kind of can be well suited in the plasticizing Granulation Equipments of high-share plant fibers filled polyolefin wood plastic composite, non-degradable, the charing when high-share plant fibers radwood plasticizing granulation of this equipment, and the respond well plasticizing Granulation Equipments of devolatilization.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of plasticizing Granulation Equipments that is used for high-share plant fibers filled polyolefin wood plastic composite comprises parallel double-screw extruder, slicing device, induced draught system and cyclone separation system; Wherein slicing device is positioned at the head discharging opening place of parallel double-screw extruder, the air inlet of induced draught system be positioned at slicing device directly over, the charging aperture of cyclone separation system be positioned at the section shape put under.
Further, the twin-screw head of described parallel double-screw extruder directly communicates with atmosphere, and the described slicing device that is installed on the head is open, therefore, on head without any the device that the twin-screw head seal is lived.
Further again, the barrel head and the twin-screw head at the head discharging opening place of described parallel double-screw extruder all are designed to plane, and barrel header planes and twin-screw header planes are in the same plane, this structure helps the slicing device discharge, rather than screw head is designed to taper shape or torpedo shape as parallel double-screw extruder of the prior art.
Further, described slicing device is made up of polylith blade and a plurality of tool rest, the quantity of described blade and tool rest equates, the number of blade and tool rest is respectively 2 to 10, the tool rest of this slicing device evenly distributes and is fixed on the plane of parallel double-screw extruder head discharging opening place barrel head, the blade root is fixed on the tool rest, and the head of blade extends the plane of twin-screw head, and with this plane contact.
The angle of described blade and twin-screw header planes is 30 ° to 60 °.
Technical conceive of the present utility model is: the wood plastic composite raw material (mainly containing string, plastics and additive) that mixes is added in the parallel double-screw extruder of the present utility model, carry out extrusion plasticizing by screw acting, plasticizing radwood well is extruded from the head discharging opening of parallel double-screw extruder.Because the twin-screw head design of parallel double-screw extruder of the present utility model becomes directly to communicate with atmosphere, on head, do not design any pellet device that the twin-screw head seal is lived (as tie rod pellet device, the fervent device of flour milling etc.), therefore, the pressure of twin-screw head is zero (gauge pressure).
The good radwood of above-mentioned plasticizing can produce rotation when the head discharging opening of parallel double-screw extruder is extruded, thereby the slicing device of the present utility model that is installed in the head place is cut into irregular, loose strip plasticizing material.
Above-mentioned when being cut into loose strip by slicing device of the present utility model, the plasticizing material is in the condition of high temperature, can produce a large amount of water vapour and organic volatile gas, these gaseous volatilization things enter the air inlet of the induced draught system directly over the slicing device and are taken away by induced draught system and to discharge outdoorly, reach the effect of devolatilization for the first time.
The above-mentioned charging aperture that falls under gravity into cyclone separation system through the plasticizing of the strip after the devolatilization for the first time material, deliver to cyclone separator in the air blast effect leeward of cyclone separation system then, in this process, the plasticizing material carries out the devolatilization second time, be cooled simultaneously, separate, thereby make devolatilization and the good plasticizing material (irregular granular or strip material) of plasticizing.This plasticizing material can be used for follow-up conical double screw extruder and prepares the very high wood plastic composite of string content by extrusion moulding.
The beneficial effects of the utility model mainly show:
1, the parallel double-screw extruder (or conical double screw extruder) used of existing wood plastic composite plasticizing granulation is for pelletizing successfully, all " pellet device " that screw head is sealed up fully is housed, earnestly installs as tie rod pellet device, flour milling etc. at its head section.As mentioned above, this plasticizing Granulation Equipments can only be used for the not too high wood plastic composite preparation of string content, when the string content in the wood plastic composite is very high (as 60%～90%), owing to the mobile very poor aperture that is difficult to flow through these pellet devices of plasticizing material, serious variable color, degraded and charing can take place in the result.
And the twin-screw head design of parallel double-screw extruder of the present utility model becomes directly to communicate with atmosphere, on head, do not design any " pellet device " that the twin-screw head seal is lived, but designed special open " slicing device " of a cover, slicing device does not seal screw head, the pressure of twin-screw head is zero (promptly not having head pressure), therefore the less and time of staying narrowly distributing of frictional force that is subjected to of material, material is difficult for degraded, charing, therefore go for the wood plastic composite plasticizing granulation of string content very high (60%～90%), solved the variable color that exists when prior art plastifies granulation to high-share plant fibers filled polyolefin radwood, degraded, charing, a series of problems such as screw rod serious wear, thus make that preparing the very high polyolefin wood-plastic composite of string with extrusion moulding becomes possibility;
2, screw head is not sealed owing to slicing device of the present utility model, therefore the plasticizing material that is extruded from parallel double-screw extruder head discharging opening does not have the process through overcompaction and cooling, so be in high temperature rarefaction (on chip), therefore than prior art make the easier devolatilization of closely knit granular plasticizing material; The air inlet of the induced draught system that is provided with above the utility model slicing device can be absorbed moisture and the organic volatile in the high temperature plasticizing material in a large number; The charging aperture that the utility model slicing device below is provided with will plastify material and deliver to cyclone separator with fluidisation attitude wind under the air blast effect of cyclone separation system, separate, cool off, and further remove moisture and organic volatile.Therefore, plasticizing Granulation Equipments of the present utility model can remove moisture content and organic volatile in the radwood better than existing equipment.
3, because slicing device of the present utility model does not seal screw head, and the twin-screw head directly communicates with atmosphere, therefore do not have the adverse current that head pressure causes, thereby extrusion capacity is big, the production efficiency height;
4, screw head is not sealed owing to slicing device of the present utility model, the twin-screw head directly communicates with atmosphere, therefore do not have material that head pressure causes and the huge friction between screw rod and the barrel, the frictional resistance that screw rod and barrel are subjected to is little, so service life of equipment is long.
Description of drawings
Fig. 1 is the structural representation that is used for the plasticizing Granulation Equipments complete unit of high-share plant fibers filled polyolefin wood plastic composite.
Fig. 2 is the structural representation of screw rod integral body.
Fig. 3 is the structural representation of screw head.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the vertical view of Fig. 3.
Fig. 6 is the schematic diagram of two blade type slicing devices.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the vertical view of Fig. 6.
Fig. 9 is the schematic diagram of four blade chip slicing device.
Figure 10 is the left view of Fig. 9.
Figure 11 is the vertical view of Fig. 9.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
A kind of plasticizing Granulation Equipments that is used for high-share plant fibers filled polyolefin wood plastic composite comprises parallel double-screw extruder, slicing device, induced draught system and cyclone separation system; Wherein slicing device is positioned at the head discharging opening place of parallel double-screw extruder, the air inlet of induced draught system be positioned at slicing device directly over, the charging aperture of cyclone separation system be positioned at the section shape put under.
In the present embodiment, a kind of plasticizing Granulation Equipments (with reference to Fig. 1) that is used for high-share plant fibers filled polyolefin wood plastic composite comprises main motor 1, feeding mechanism 2, hopper 3, extruder charging aperture 4, barrel 5, slicing device 6, induced draught system air inlet, air-introduced machine 8, cyclone separator charging aperture 9, air blast 10, conveying pipeline 11, cyclone separator 12.Screw rod is installed in the barrel 5, and slicing device 6 is designed to open, and therefore, screw head directly communicates with atmosphere, and the pressure of screw head is zero (gauge pressure).
In the present embodiment, the overall structure of screw rod and external member is seen Fig. 2.For the ease of section be cut into the easy blanking of radwood of sheet and be difficult for bondingly mutually, screw head is designed to tack (with reference to Fig. 3～5).Screw head has a flat nut 13 that the screw rod external member is fixed on the screw rod, and the tack plane and the screw head plane of nut 13 are in the same plane.
In the present embodiment, slicing device (comprise blade 14 and tool rest 15 with reference to Fig. 6～Figure 11), determine according to the size of equipment, if equipment is less, can be designed to 2, if equipment is bigger, can be designed to 4,6 or more by the number of blade.Present embodiment is designed to 2 or 4 blades (with reference to Fig. 6～Figure 11).The tool rest 15 of slicing device is installed on the plane 16 of head place barrel head, blade 14 is fixed on the tool rest 15, the blade head stretches to screw head and contacts with the screw head plane, the angle between blade and the screw head plane be 45 ° (with reference to Fig. 6～Figure 11).
In the present embodiment, the air inlet 7 of induced draught system (with reference to Fig. 1) be positioned at slicing device directly over, the air inlet 7 of induced draught system links to each other with air-introduced machine 8 by induced duct.The charging aperture 9 of cyclone separation system (with reference to Fig. 1) be positioned at slicing device under, the charging aperture 9 of cyclone separation system communicates with air blast 10, links to each other with cyclone separator 12 by conveying pipeline 11 again.According to the needs of different devolatilizations, cyclone separator can adopt 1 to 3 grade of formula, and present embodiment adopts two-stage type.
The course of work of present embodiment is:
With reference to Fig. 1, raw material (the wood powder content 70% of the wood plastic composite that will mix through high-speed mixer, plastic content 27%, processing aid content 3%), add in the material bin 3 (volume of hopper is 0.3 cubic metre), under feed system 2 effects, raw material is quantitatively added in the parallel double-screw extruder through charging aperture 4, carry out extrusion plasticizing by screw acting.Screw diameter is 36 millimeters, and draw ratio is 44, and the temperature of the barrel 5 of extruder is controlled to be 180 ℃, and the rotating speed of screw rod is controlled to be 300r/min, and the rotating speed of feeding machine is 200r/min in the feed system 2;
The good material of plasticizing is when the head discharging opening of extruder is extruded, and radwood can rotate, thereby the blade that is installed in the slicing device 6 at head place is cut into irregular, loose strip plasticizing material.Loose strip plasticizing material is in the condition of high temperature, volatile matters such as a large amount of water vapour that it produced and organic volatile gas be installed in the induced draught system air inlet 7 of slicing device top and air-introduced machine 8 take away discharge outdoor, thereby reached devolatilization effect preferably;
Above-mentioned strip radwood is under the gravity effect, fall into the charging aperture 9 of cyclone separation system, under air blast 10 effects, be inhaled into conveying pipeline 11 then, and be sent to cyclone separator 12, in this process, radwood is cooled simultaneously, separates further by devolatilization, thereby makes devolatilization and the good plasticizing material (irregular granular or strip material) of plasticizing.Induced draught system air inlet 7 lower ends are long * widely also be 500 * 200 millimeters, charging aperture 9 upper ends of cyclone separation system are long * wide be 500 * 200 millimeters, the power of air blast 10 is 1000W.
Claims (5)
1. a plasticizing granulation that is used for high-share plant fibers filled polyolefin wood plastic composite is established, and it is characterized in that: comprise parallel double-screw extruder, slicing device, induced draught system and cyclone separation system; Wherein, slicing device is positioned at the head discharging opening place of parallel double-screw extruder, the air inlet of induced draught system be positioned at slicing device directly over, the charging aperture of cyclone separation system be positioned at the section shape put under.
2. the plasticizing Granulation Equipments that is used for high-share plant fibers filled polyolefin wood plastic composite as claimed in claim 1, it is characterized in that: the twin-screw head of described parallel double-screw extruder directly communicates with atmosphere, and described slicing device is Open architecture.
3. the plasticizing Granulation Equipments that is used for high-share plant fibers filled polyolefin wood plastic composite as claimed in claim 1 or 2, it is characterized in that: the barrel head at the head discharging opening place of described parallel double-screw extruder and twin-screw head are plane, and barrel header planes and twin-screw header planes are in the same plane.
4. the plasticizing Granulation Equipments that is used for high-share plant fibers filled polyolefin wood plastic composite as claimed in claim 1 or 2, it is characterized in that: described slicing device is made up of polylith blade and a plurality of tool rest, the quantity of described tool rest and blade equates, the number of blade and tool rest is respectively 2 to 10, the tool rest of this slicing device evenly distributes and is fixed on the plane of parallel double-screw extruder head discharging opening place barrel head, the blade root is fixed on the tool rest, the head of blade extend the twin-screw head the plane and with this plane contact.
5. the plasticizing Granulation Equipments that is used for high-share plant fibers filled polyolefin wood plastic composite as claimed in claim 4 is characterized in that: the angle of described blade and twin-screw header planes is 30 ° to 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201785891U CN201702872U (en) | 2010-05-05 | 2010-05-05 | Plasticization and granulation equipment for polyolefin wood-plastic composite material filled with high-share plant fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201785891U CN201702872U (en) | 2010-05-05 | 2010-05-05 | Plasticization and granulation equipment for polyolefin wood-plastic composite material filled with high-share plant fiber |
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| Publication Number | Publication Date |
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| CN201702872U true CN201702872U (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201785891U Expired - Fee Related CN201702872U (en) | 2010-05-05 | 2010-05-05 | Plasticization and granulation equipment for polyolefin wood-plastic composite material filled with high-share plant fiber |
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| CN (1) | CN201702872U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823298A (en) * | 2010-05-05 | 2010-09-08 | 杭州师范大学 | Plasticization and granulation equipment for filling polyolefin plastic composite material with high-share plant fibers |
| CN109555285A (en) * | 2018-10-15 | 2019-04-02 | 格林美（武汉）城市矿产循环产业园开发有限公司 | A kind of elasticity plastic-wood floor and preparation method thereof |
-
2010
- 2010-05-05 CN CN2010201785891U patent/CN201702872U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823298A (en) * | 2010-05-05 | 2010-09-08 | 杭州师范大学 | Plasticization and granulation equipment for filling polyolefin plastic composite material with high-share plant fibers |
| CN101823298B (en) * | 2010-05-05 | 2013-06-05 | 杭州师范大学 | Plasticization and granulation equipment for filling polyolefin plastic composite material with high-share plant fibers |
| CN109555285A (en) * | 2018-10-15 | 2019-04-02 | 格林美（武汉）城市矿产循环产业园开发有限公司 | A kind of elasticity plastic-wood floor and preparation method thereof |
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| Date | Code | Title | Description |
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| 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: 20110112 Termination date: 20160505 |