CN110394966A - A kind of devolatilization screw rod and devolatilization extruder - Google Patents
A kind of devolatilization screw rod and devolatilization extruder Download PDFInfo
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- CN110394966A CN110394966A CN201910650218.4A CN201910650218A CN110394966A CN 110394966 A CN110394966 A CN 110394966A CN 201910650218 A CN201910650218 A CN 201910650218A CN 110394966 A CN110394966 A CN 110394966A
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- Prior art keywords
- devolatilization
- threaded portion
- screw rod
- threaded
- material channel
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- 239000000463 material Substances 0.000 claims abstract description 103
- 238000010079 rubber tapping Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 8
- 239000012855 volatile organic compound Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000001141 propulsive effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Classifications
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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
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
-
- 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
- B29C48/55—Screws having reverse-feeding 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
- B29C48/50—Details of extruders
- B29C48/76—Venting, drying means; Degassing means
- B29C48/763—Vent constructions, e.g. venting means avoiding melt escape
-
- 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
- B29C48/76—Venting, drying means; Degassing means
- B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
- B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
- B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of devolatilization screw rod and devolatilization extruders, including shaft, the shaft has the delivery section for conveying material forward and at least one section of threaded elements, the threaded elements include the first threaded portion for conveying material forward and the second threaded portion for connecting with the first threaded portion, the screw thread of first threaded portion and the thread rotary orientation of the second threaded portion are opposite, thread rotary orientation opposite the first threaded portion and the second threaded portion, squeeze material, realize orientation conveying；Devolatilization extruder, including cylinder, devolatilizer, reclaiming plate and devolatilization screw rod, there is material channel in devolatilizer, the entrance of material channel is connected to delivery area or the first threaded portion, the outlet of material channel is connected to the first threaded portion of delivery section or/and next threaded elements, reclaiming plate is equipped with multiple discharge holes, realizes devolatilization after forming the shapes such as continuous, continual film, line, item under the action of material channel and reclaiming plate, material continues through the rotation of devolatilization screw rod and squeezes out.
Description
Technical field
The present invention relates to being used to one of polymer melt volatile ingredient research field device, more particularly to one
Kind devolatilization screw rod, further relates to a kind of devolatilization extruder.
Background technique
It is one in plastic material industrial production common that polymer melt, which deviates from volatile ingredient to improve polymer quality,
Process.In this process, additive needed for volatile component such as monomer, oligomer, polymerization and the polymer quality is damaged
Undesirable by-product be removed.
Existing devolatilization technology:
1, devolatilization is heated at high temperature using baking oven, there are following several disadvantages:
1), material is granulated by twin-screw, need to be put into baking oven, and heating carries out devolatilization；
2), the devolatilization time is long, cumbersome；
3), material reheating easily causes material aging, performance decline.
2, using devolatilization is vacuumized in twin-screw granulation process, there are following several disadvantages:
1) material of twin-screw plasticizing cannot leave twin-screw, and material cannot abundant devolatilization in vacuum port；
2) regardless of company standard is all not achieved in multiple vacuum ports abjection VOCs and smell.
Summary of the invention
The purpose of the present invention is to provide a kind of devolatilization screw rod, by the way that the first opposite threaded portion of thread rotary orientation is arranged
With the second threaded portion, material is squeezed, realizes orientation conveying.
A kind of devolatilization extruder is also provided, material is oriented by the material being delivered in devolatilizer by setting devolatilization screw rod
Channel, it is interior under the action of material channel and reclaiming plate to realize continuous devolatilization.
The solution that the present invention solves its technical problem is: a kind of devolatilization screw rod, including shaft, and the shaft has will
The delivery section and at least one section of threaded elements that material conveys forward, the threaded elements include the first spiral shell for conveying material forward
Line portion and the second threaded portion being connect with the first threaded portion, the screw thread of first threaded portion and the thread rotary orientation of the second threaded portion
On the contrary.
As a further improvement of the above technical scheme, in the same threaded elements, the screw pitch edge of first threaded portion
Gradually become smaller close to the direction of the second threaded portion.
As a further improvement of the above technical scheme, the shaft is spliced by a more point bars.
As a further improvement of the above technical scheme, the quantity of threaded elements is two sections or more, two adjacent screw threads
In unit, the second threaded portion of a upper threaded elements is equipped with the junction of the first threaded portion of next threaded elements and is used for
The shoulder of bearing shell is installed.
A kind of devolatilization extruder, including cylinder, at least one devolatilizer and at least one devolatilization screw rod above-mentioned, devolatilization
Screw rod passes through devolatilizer, and the first threaded portion of the same threaded elements and the junction of the second threaded portion are formed defeated in devolatilization screw rod
Area is sent, there is material channel in the devolatilizer, the entrance of the material channel is connected to delivery area or the first threaded portion, material
The outlet in channel is connected to the first threaded portion of delivery section or/and next threaded elements, and being equipped in the material channel can tear open
The reclaiming plate of dress, the reclaiming plate are equipped with multiple discharge holes close to the outlet of material channel, the reclaiming plate.
As a further improvement of the above technical scheme, the outlet of material channel is divided into far from devolatilization spiral shell by the reclaiming plate
The second space in the first space of bar and close devolatilization screw rod, discharge hole are connected to the first space and second space, the discharge hole
In close to the first space internal diameter be greater than discharge hole in close to second space internal diameter.
As a further improvement of the above technical scheme, the discharge hole is strip-shaped hole or circular hole.
As a further improvement of the above technical scheme, exhaust passage is equipped in the devolatilizer, the exhaust passage will
Second space is connected to the gas vent of cylinder.
As a further improvement of the above technical scheme, the material channel includes feeding-passage and tapping channel, described
The side wall of feeding-passage and/or tapping channel is equipped with the sealing plate that can be opened, and the side wall of the tapping channel, which is equipped with, to be used for
The mounting hole of reclaiming plate is installed.
It as a further improvement of the above technical scheme, further include the pressure sensor that material channel entrance is set.
The beneficial effects of the present invention are: the first threaded portion and the second screw thread that the present invention is opposite by setting thread rotary orientation
Portion squeezes material, realizes orientation conveying.And by after the installation of devolatilizer, devolatilization screw rod and cylinder, devolatilization screw rod will be plasticized
Material orient the material channel that is delivered in devolatilizer, formed under the action of material channel and reclaiming plate continuous, uninterrupted
The shapes such as film, line, item after realize devolatilization, material continues through the rotation of devolatilization screw rod and squeezes out, then not will cause fracture phenomenon, real
Successive production is showed, has guaranteed that production is normally carried out.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the structural schematic diagram of devolatilization screw rod in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of devolatilization extruder in the embodiment of the present invention；
Fig. 3 is the partial enlarged view that circle institute's frame selects part in Fig. 2；
Fig. 4 is the top view of reclaiming plate in the embodiment of the present invention；
Fig. 5 is the side view of Fig. 4；
Fig. 6 is the top view of reclaiming plate in the embodiment of the present invention；
Fig. 7 is the cross-sectional view of Fig. 6.
Specific embodiment
This part will be described in specific embodiments of the present invention, and the preferred embodiments of the invention is shown in the accompanying drawings, attached
The effect of figure be with figure remark additionally book word segment description, enable a person to intuitively, visually understand of the invention
Each technical characteristic and overall technical architecture, but it should not be understood as limiting the scope of the invention.
In the description of the present invention, it is to be understood that, be related to orientation description, for example, above and below, front, rear, left and right etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.
In the description of the present invention, several to be meant that one or more, it is multiple to be meant that two or more, be greater than,
Be less than, more than etc. be interpreted as not including this number, it is above, following, within etc. be interpreted as including this number.If there is being described to first,
Second is only intended to for the purpose of distinguishing technical characteristic, is not understood to indicate or imply relative importance or implicitly indicates institute
The quantity of the technical characteristic of instruction or the precedence relationship for implicitly indicating indicated technical characteristic.
In description of the invention, unless otherwise restricted clearly, the words such as setting, installation, connection be shall be understood in a broad sense, institute
Above-mentioned word in the present invention specific can rationally be determined with the particular content of combination technology scheme by belonging to technical field technical staff
Meaning.
Referring to Fig.1, a kind of devolatilization screw rod, including shaft, the shaft have 13 He of delivery section for conveying material forward
At least one section of threaded elements, the threaded elements include the first threaded portion 11 for conveying material forward and with the first threaded portion 11
The thread rotary orientation of second threaded portion 12 of connection, the screw thread of first threaded portion 11 and the second threaded portion 12 is opposite.By devolatilization
After screw rod is installed on extruder, delivery section 13 send the material of plasticizing to the first threaded portion 11, material and along the first screw thread
Portion 11 is sent to the junction of the first threaded portion 11 and the second threaded portion 12, and material receives thrust P1 and propulsive thrust P2 here, pushes away
Power P1 is the power that the rotation of the first threaded portion 11 is applied to material, and thrust P2 is that the rotation of the second threaded portion 12 is applied to material to material
Power, P1 and P2's is contrary, then material is by the material channel 28 entered in devolatilizer 20 after thrust P1 and propulsive thrust P2
In.
Delivery section 13 can send material to the first threaded portion 11, and delivery section 13 can also receive the object come out from devolatilizer 20
Material, and material is conveyed forward.
In the same threaded elements, the screw pitch of first threaded portion 11 along the direction close to the second threaded portion 12 gradually
Become smaller.The screw pitch of first threaded portion 11 gradually becomes smaller, and 11 pressing materials of the first threaded portion squeeze, and the screw pitch of the second threaded portion 12
It is identical as the screw pitch at 11 beginning of the first threaded portion, so that | P1 | > | P2 |.| P1 | refer to the absolute value of thrust P1.| P2 | refer to
It is the absolute value of thrust P2.
The quantity of the threaded elements is two sections or more, in two adjacent threaded elements, the of a upper threaded elements
Two threaded portions 12 are connect with the first threaded portion 11 of next threaded elements.Multiple threaded elements are set, in order in extruder
The upper multiple devolatilizers 20 of setting.Delivery section 13 send material to the first threaded portion 11 of a threaded elements, via the first screw thread
The material channel 28 and reclaiming plate for entering devolatilizer 20 behind portion 11, realize devolatilization, fall into the first screw thread of next threaded elements
Portion 11 enters back into the material channel 28 and reclaiming plate of next devolatilizer 20, realizes multiple devolatilization.
The quantity of threaded elements is two sections or more, in two adjacent threaded elements, the second spiral shell of a upper threaded elements
The junction of line portion 12 and the first threaded portion 11 of next threaded elements is equipped with the shoulder for installing bearing shell 14.Shaft is corresponding
Position also is provided with the shoulder for installing bearing shell 14.Bearing shell 14 is mounted on shoulder, and devolatilization screw rod is installed in cylinder, in order to
Devolatilization screw rod smooth rotation.
For the devolatilization screw rod that size can be realized in machining, which is monolithic construction.It is too long for size
Devolatilization screw rod, can be realized by way of splicing assembling, the shaft is spliced by a more point bars.
A kind of devolatilization extruder, including cylinder 15, at least one devolatilizer 20 and at least one devolatilization screw rod above-mentioned,
Devolatilization screw rod passes through devolatilizer 20, the first threaded portion 11 of the same threaded elements and the company of the second threaded portion 12 in devolatilization screw rod
The place of connecing forms delivery area, has material channel 28 in the devolatilizer 20, the entrance of material channel 28 can directly with the first spiral shell
Line portion 11 is connected to, alternatively, delivery area of the entrance of material channel 28 against 12 junction of the first threaded portion 11 and the second threaded portion,
The outlet of material channel 28 is connected to the first threaded portion 11 of delivery section 13 or/and next threaded elements, the material channel
The reclaiming plate 21 that can be removably mounted is equipped in 28, the reclaiming plate 21 is equipped with more close to the outlet of material channel 28, the reclaiming plate 21
A discharge hole 26.Thread rotary orientation opposite the first threaded portion 11 and the second threaded portion 12 are set, material can be prevented via second
Threaded portion 12 enters the first threaded portion 11 of delivery section 13 or next threaded elements.Cylinder 15 is equipped with multiple gas vents 25.
As with the embodiments shown in figures 2 and 3, the quantity of devolatilization screw rod is two.Under vacuum condition, two devolatilization screw rods
The material of plasticizing can two devolatilization screw rods away from keyboard, into devolatilizer devolatilization after enter two devolatilization screw rods again.Delivery section 13
The material of plasticizing is sent to the first threaded portion 11, material and is sent along the first threaded portion 11 to the first threaded portion 11 and the second screw thread
The junction in portion 12, material receive thrust P1 and propulsive thrust P2 here, and thrust P1 is that the rotation of the first threaded portion 11 is applied to object
The power of material, thrust P2 are that the rotation of the second threaded portion 12 is applied to the power of material to material, and P1 and P2's is contrary, then material by
Enter in the material channel 28 in devolatilizer 20 after to thrust P1 and propulsive thrust P2, material is squeezed along the discharge hole 26 of reclaiming plate 21
Out.Extrudate has bigger surface area compared with through the material before reclaiming plate 21.The bigger surface area of variation allows
VOCs is overflowed along the gas vent 25 of material channel 28, devolatilization screw rod and cylinder 15.Material passes through devolatilization, and VOCs and smell are taken out
Out, reach the national standard of formulation.Meanwhile the present invention solves the technology that secondary devolatilization is carried out by baking oven, saves
Manually, the expenses such as the electricity charge, equipment loss consumption.VOCs is volatile organic matter.In figure 2 and figure 3, between two devolatilization screw rods
Arrow in arrow and devolatilizer 20 is the direction that material squeezes out.
As with the embodiments shown in figures 2 and 3, the quantity of devolatilizer 20 is two.Material be introduced into a devolatilizer 20 into
After row devolatilization, the material of extrusion enters the first threaded portion 11, enters back into the material channel 28 of next devolatilizer 20, by going out
After flitch 21, second of devolatilization is carried out, material falls into delivery section, is moved along under the action of delivery section.
The outlet of material channel 28 is divided into the first space 22 and close devolatilization far from devolatilization screw rod by the reclaiming plate 21
The second space 23 of screw rod, discharge hole 26 are connected to the first space 22 and second space 23, and close first is empty in the discharge hole 26
Between 22 internal diameter be greater than discharge hole in close to second space 23 internal diameter.Internal diameter can be diameter of a circle, and internal diameter may be phase
Pair the distance between two sides.After material enters reclaiming plate 21 along the first space 22, go out by what internal diameter gradually deformed
Material hole 26 forms rear realization devolatilization, the materials such as continuous continuous, continual film, line, item and enters second space 23.
Embodiment as shown in Figure 4 and Figure 5, the discharge hole 26 are circular hole.Discharge hole 26 is distributed in matrix, discharge hole 26
Top connected with the lower part of discharge hole 26 by bellmouth it is in a strip shape or linear so that material is after discharge hole 26.
Embodiment as shown in Figure 6 and Figure 7, the discharge hole 26 are strip-shaped hole.Discharge hole 26 is arranged in parallel in reclaiming plate
On 21.After the internal diameter of the lower part on the top and discharge hole 26 of discharge hole 26 gradually becomes smaller, so that material is in after discharge hole 26
It is membranaceous.
It is equipped with exhaust passage 24 in the devolatilizer 20, the exhaust passage 24 is by the exhaust of second space 23 and cylinder 15
Hole 25 is connected to.After VOCs is detached from from the material of extrusion, part VOCs enters the exhaust of cylinder 15 via 23 diameter of second space
Hole 25 is discharged, and remaining VOCs is discharged via the gas vent 25 for entering cylinder 15 after the first threaded portion 11 or delivery section 13.
It further include the pressure sensor that 28 entrance of material channel is set.Pressure sensor is attached for 28 entrance of material channel
The pressure that nearly material is subject to.Resistance P3 of the material by reclaiming plate 21 is set, as long as then | P1 | > | P2 | > | P3 | when, material energy
It is normal to squeeze out.| P3 | for the absolute value of the resistance P3 of reclaiming plate 21.When pressure sensor detects | P3 |=| P2 | when, illustrated
Devolatilizer 20 has adsorbed a large amount of impurity, increases the resistance of material, and effect is deteriorated, then needs to carry out cleaning reclaiming plate in time
21, prevent second threaded portion 12 of the material in devolatilizer 20 from escaping to the first screw thread of output section or next threaded elements
Portion 11.
The material channel 28 includes feeding-passage 27 and tapping channel, the feeding-passage 27 and/or tapping channel
Side wall is equipped with the sealing plate that can be opened, and the side wall of the tapping channel is equipped with the mounting hole for installing reclaiming plate 21.It beats
Sealing plate is opened, material channel 28 is cleared up convenient for staff and increases the material of plasticizing so that material is able to achieve continuous extrusion
Surface area, the VOCs and smell be conducive in material preferably, are fully released.
It is to be illustrated to better embodiment of the invention, but the invention is not limited to the reality above
Example is applied, those skilled in the art can also make various equivalent modifications on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of devolatilization screw rod, it is characterised in that: including shaft, the shaft is with the delivery section for conveying material forward and extremely
Few one section of threaded elements, the threaded elements include the first threaded portion for conveying material forward and connect with the first threaded portion
Second threaded portion, the screw thread of first threaded portion and the thread rotary orientation of the second threaded portion are opposite.
2. devolatilization screw rod according to claim 1, it is characterised in that: in the same threaded elements, first threaded portion
Screw pitch gradually become smaller along close to the direction of the second threaded portion.
3. devolatilization screw rod according to claim 1, it is characterised in that: the quantity of the threaded elements is two sections or more, phase
In two adjacent threaded elements, the second threaded portion of a upper threaded elements and the first threaded portion of next threaded elements connect
It connects.
4. devolatilization screw rod according to claim 1, it is characterised in that: the shaft is spliced by a more point bars.
5. a kind of devolatilization extruder, it is characterised in that: including cylinder, at least one devolatilizer and at least one such as claim
1~4 described in any item devolatilization screw rods, devolatilization screw rod pass through devolatilizer, the first spiral shell of the same threaded elements in devolatilization screw rod
The junction of line portion and the second threaded portion forms delivery area, has material channel in the devolatilizer, the material channel enters
Mouth is connected to delivery area or the first threaded portion, the first spiral shell of the outlet of material channel and delivery section or/and next threaded elements
The connection of line portion, is equipped with the reclaiming plate that can be removably mounted in the material channel, the reclaiming plate close to the outlet of material channel, it is described go out
Flitch is equipped with multiple discharge holes.
6. devolatilization extruder according to claim 5, it is characterised in that: the outlet of material channel is divided by the reclaiming plate
The first space far from devolatilization screw rod and the second space close to devolatilization screw rod, discharge hole are connected to the first space and second space,
Internal diameter in the discharge hole close to the first space is greater than the internal diameter in discharge hole close to second space.
7. devolatilization extruder according to claim 6, it is characterised in that: the discharge hole is strip-shaped hole or circular hole.
8. devolatilization extruder according to claim 6 or 7, it is characterised in that: be equipped with exhaust passage, institute in the devolatilizer
It states exhaust passage and is connected to second space with the gas vent of cylinder.
9. devolatilization extruder according to claim 6 or 7, it is characterised in that: the material channel include feeding-passage and
The side wall of tapping channel, the feeding-passage and/or tapping channel is equipped with the sealing plate that can be opened, the side of the tapping channel
Wall is equipped with the mounting hole for installing reclaiming plate.
10. according to devolatilization extruder described in claim 5 or 6 or 7, it is characterised in that: further include that setting enters in material channel
The pressure sensor of mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910650218.4A CN110394966A (en) | 2019-07-18 | 2019-07-18 | A kind of devolatilization screw rod and devolatilization extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910650218.4A CN110394966A (en) | 2019-07-18 | 2019-07-18 | A kind of devolatilization screw rod and devolatilization extruder |
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| Publication Number | Publication Date |
|---|---|
| CN110394966A true CN110394966A (en) | 2019-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910650218.4A Pending CN110394966A (en) | 2019-07-18 | 2019-07-18 | A kind of devolatilization screw rod and devolatilization extruder |
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| CN (1) | CN110394966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220324146A1 (en) * | 2021-04-07 | 2022-10-13 | Engel Austria Gmbh | Apparatus and method for degassing a plasticized material |
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