CN207388253U - A kind of double screw extruder - Google Patents
A kind of double screw extruder Download PDFInfo
- Publication number
- CN207388253U CN207388253U CN201721418894.1U CN201721418894U CN207388253U CN 207388253 U CN207388253 U CN 207388253U CN 201721418894 U CN201721418894 U CN 201721418894U CN 207388253 U CN207388253 U CN 207388253U
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- China
- Prior art keywords
- cylinder
- screw extruder
- double screw
- pellet
- surge tank
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of double screw extruders, belong to technical field of chemical production equipment, and including cylinder, drawing-in device and vacuum line anti-block apparatus, drawing-in device includes pellet cylinder, powder cylinder and doses control system.The pellet of variable grain degree and powder are launched by pellet cylinder and powder cylinder into double screw extruder respectively, weight sensor, which is respectively provided with, in the cylinder bottom of pellet cylinder and powder cylinder obtains the proportioning of main and supplementary materials to weigh the weight of material in cylinder in real time, control valve is opened and closed control in controller, so as to carry out and adjust to the proportioning of main and supplementary materials.Greatly reduce hand labor intensity.A vacuum line is connected on the cylinder of double screw extruder for removing the air that may be carried in material, simultaneously by a surge tank by the garbage collection carried in vacuum line and cleaning, stop that waste material enters next pipeline using filter screen, under vibrating motor is set on filter screen simultaneously for the waste material on filter screen to be trembled, to prevent filter screen is blocked.
Description
Technical field
The utility model is related to technical field of chemical production equipment, specifically, are related to a kind of double screw extruder.
Background technology
Modified plastics refers on the basis of general-purpose plastics and engineering plastics, through filling, be blended, enhance the methods of add
Work improves the plastic products of the performance of anti-flammability, intensity, impact resistance, toughness etc..
At present in plastics-production, granulating formula is made of plurality of raw materials, filler material and auxiliary agent, in actual production process
In, the feed way of generally use to extrusion forming feeds, and the feed way of extrusion forming can be divided into gravity charging and strong
System charging.Gravity charging is to be added to by the neutrality of itself in barrel, and simple in structure, cost is relatively low, but it is uneven to feed
It is even.It is to fill out material pressure in barrel by external force to force charging, overcomes " bridge formation " phenomenon.
Existing common pressure feeding device is double screw extruder, and double screw extruder is mainly in " ∞ " font
In cylinder, material is to be fed forward by being non-fully full of in a manner of screw channel in double screw extruder, has and material is forced to push forward
Effect, meanwhile, double screw extruder also has material in the engagement place of two screw rods preferable dispersion mixing to act on.Material is with spiral shell
Bar rotary motion gradually becomes linear motion, is elapsed to heading, and is engaged with fuselage, and compression heat generation, softening stirring mix
Close material.
The auxiliary material addition of traditional double screw extruder is direct according to existing proportioning using the main and supplementary materials of variable grain degree
It is added in material cylinder, the main and supplementary materials of each component is uniformly mixed by churned mechanically form, are then added to double screw extruder
Entrance.Main and supplementary materials proportioning is certain in material cylinder, but since the granularity of various main and supplementary materials is different, only leads in operation
The main and supplementary materials of variable grain degree can not be mixed thoroughly by crossing mechanical agitation so that main and supplementary materials of the material cylinder at different depth are matched somebody with somebody
Than differing.The proportioning of modified plastics is unstable, and product quality can not be protected.
Meanwhile in traditional handicraft, in order to which discharging is made to have the phenomenon that better shape, reduction hollow material, often using vacuum
The mode of air-breathing removes the air that may be carried in material.This means is reaching its purpose of usage simultaneously as vacuum
Gettering ability is powerful, and part powder or glass or material while air-breathing is caused to be entrained into vacuum line.Part is in vacuum tube
Being detained in road causes pipeline blockage, partly into the service life in vacuum pump, reducing vacuum pump.This causes production stabilization
It seriously affects, simultaneously because pipeline is longer, cleaning is got up relatively difficult.
Utility model content
The purpose of this utility model is to provide a kind of double screw extruder, and the main and supplementary materials of variable grain degree are separately launched,
Make main and supplementary materials mixing evenly, meanwhile, it can effectively prevent the obstruction of vacuum line, and extend the service life of vacuum pump, beneficial to waste material
Cleaning.
To achieve these goals, double screw extruder provided by the utility model includes cylinder, drawing-in device and true
Empty pipeline block-proof device, drawing-in device include pellet cylinder, powder cylinder and doses control system；The cylinder bottom of pellet cylinder and powder cylinder is set
There is discharge port, discharge port sets charge door on the twin screw extruder by feed pipe connection；The bottom of pellet cylinder is equipped with
One offers different size of through hole, each through hole tool on cylinder bottom central rotation and the turntable identical with cylinder bottom size, the turntable
Have corresponding with discharge port so that the correspondence position of pellet output；Doses control system includes being separately positioned on pellet cylinder and powder cylinder
The weight sensor of cylinder bottom, be arranged on each feed pipe inlet control valve and with each control valve communication connection control
Device；The vacuum pump that vacuum line anti-block apparatus includes the vacuum line of an entrance connector drum and is arranged on vacuum line,
One is additionally provided on vacuum line for collecting the surge tank of waste material, the outlet of vacuum line is connected with a cyclic water tank；Surge tank
One is inside equipped with for stopping the filter screen of waste material, a vibrating motor is fixed on the filter screen.
In above-mentioned technical proposal, the pellet of variable grain degree and powder are launched by pellet cylinder and powder cylinder to double respectively
In screw extruder, it is respectively provided with weight sensor in the cylinder bottom of pellet cylinder and powder cylinder and is obtained with weighing the weight of material in cylinder in real time
To the proportioning of main and supplementary materials, control valve is opened and closed control in controller, so as to carry out and adjust to the proportioning of main and supplementary materials.It drops significantly
Low hand labor intensity.Since the particle size of different pellets can be variant, when grain size differs greatly, same size is used
Discharge port will appear from large-sized pellet bayonet, the phenomenon that pellet blanking of two small particles is too fast, therefore, at the bottom of pellet cylinder
Portion's installation one is around the turntable of cylinder bottom central rotation, and different size of through hole can be alignd by rotary turnplate with discharge port on turntable,
So as to achieve the purpose that change reason discharge port size.It, can be by the large through-hole of turntable and discharge port pair when the grain size of pellet is larger
Together, when the grain size of pellet is smaller, small through hole can be alignd with discharge port.Preferably, the shape of discharge port and all through holes
It is circle.A vacuum line is connected on the cylinder of double screw extruder for removing the air that may be carried in material, together
When by a surge tank by the waste material carried in vacuum line (such as material, powder, glass) collect and clear up, utilize filter screen
Stop waste material into next pipeline, while on filter screen vibrating motor is set to be used under the waste material on filter screen is trembled, to prevent
Filter screen is blocked.It is not collected in addition, the outlet of vacuum line is passed through in cyclic water tank can further to collect by surge tank
Small powder, to prevent being polluted to air.Device input is small, and return is high, and easy to clean is suitably applied Chemical Manufacture
In.
Specific scheme includes 11 section cylinders for double screw extruder.
More specific scheme is equipped with charge door, pellet cylinder connection first segment cylinder for first segment cylinder and Section of five cylinder
On charge door, powder cylinder connect Section of five cylinder on charge door；Section three, it is provided with vacuum on cylinder and Section of eight cylinder
Anti-block apparatus.
Since the intergranular gap of pellet is big compared with powder, first plus pellet adds the benefit of powder to be that can make pellet with powder again
Material can be mixed more fully.Positive air defence block apparatus is disposed on behind powder cylinder and pellet cylinder, is stood after blanking
The air in material is removed, is conducive to improve product quality.
Another specific scheme is equipped with a tumbler for the periphery of turntable.It can be controlled and turned by the tumbler
The bottom centre for coiling pellet cylinder rotates.
More specific scheme includes the threaded hole being arranged on the periphery of turntable for tumbler and removably screws
Handwheel in the threaded hole.The thread matching structure can at any time disassemble handwheel from turntable, when turntable is adjusted to
During designated position, handwheel is unloaded, can prevent from encountering handwheel in blanking process and rotating turntable, influence blanking.
Another specific scheme is equipped with mark corresponding with the position of discharge port, turntable for the bottom periphery of pellet cylinder
Periphery be equipped with graduation mark corresponding with the position of through hole and scale marker.Pass through the graduation mark alignment pellet cylinder on turntable
Mark on the periphery of bottom can confirm whether turntable turns to definite position, and scale marker is used to identify hole size at this.
Another specific scheme includes the entrance for the cylinder and surge tank for connecting double screw extruder for vacuum line
3rd pipe of the first pipeline, the second pipeline of the outlet for connecting surge tank and vacuum pump and connection vacuum pump and cyclic water tank
Road.
During installation, the entrance for separate second pipeline that the outlet of the first pipeline should be tried one's best, the outlet of the first pipeline is less than
The entrance of second pipeline.
Surge tank is separated into upper and lower part by more specific scheme for filter screen, and the outlet of the first pipeline is located at surge tank
Lower part, the entrance of the second pipeline is located at the top of surge tank.
For another more specific scheme to be equipped with the partition plate of vertical direction in surge tank, filter screen is arranged on the bottom of partition plate
Between the inner wall of surge tank；The outlet of first pipeline and the entrance of the second pipeline are located at what is obstructed by partition plate and filter screen respectively
In two spaces.
Preferred scheme offers a clean-up port for clear away waste for the bottom of surge tank, is covered at the clean-up port
One lid；The top of surge tank is equipped with a windowpane.
Clean-up port conveniently periodically can carry out cleaning maintenance to equipment, can be monitored at any time in surge tank by windowpane
Waste material situation, when waste material is more, clean-up port is opened, and from clean-up port by pipe waste material take out cleaning, whole process
It is simple easily operated.
Compared with prior art, the beneficial effects of the utility model are：
The double screw extruder of the utility model is easy to operate, and the main and supplementary materials mixing for solving variable grain degree is non-uniform
Problem, ensures the stability of product quality, while reduces labor intensity.In addition, vacuum line anti-block apparatus is easy to operate, it can
It effectively prevents the obstruction of vacuum line, and extends the service life of vacuum pump, beneficial to the cleaning of waste material.The normal use of all devices is all
It does not impact.It can simplify task difficulty again while stable vacuum is ensured.
Description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment；
Fig. 2 is the structure diagram of the pellet cylinder of the utility model embodiment；
Fig. 3 is the top view of the pellet cylinder of the utility model embodiment；
Fig. 4 is the top view of the turntable of the utility model embodiment；
Fig. 5 is the sectional view of the surge tank of the utility model embodiment 1；
Fig. 6 is the sectional view of the surge tank of the utility model embodiment 2.
Wherein, 001, double screw extruder；01 cylinder；1st, charge door；2nd, charge door；3rd, pellet cylinder；31st, identify；4th, powder
Material cylinder；5th, discharge port；6th, turntable；61st, first through hole；62nd, the second through hole；63rd, third through-hole；64th, graduation mark；65th, threaded hole；
7th, handwheel；8th, feed pipe；9th, the first pipeline；10th, the second pipeline；11st, the 3rd pipeline；12nd, vacuum pump；13rd, surge tank；131st, go out
Gas portion；132nd, air inlet portion；14th, filter screen；15th, vibrating motor；16th, waste material clean-up port；17th, partition plate；18th, cyclic water tank.
Specific embodiment
With reference to embodiments and its attached drawing the utility model is described in further detail.
Embodiment 1
Referring to Fig. 1 to Fig. 4, the double screw extruder 01 of the present embodiment includes 11 section cylinders, is opened up in first segment cylinder
There is charge door 1, charge door 2 is offered on Section of five cylinder, mounting vacuum tube road is provided on Section of three cylinder and Section of eight cylinder
Through hole.
Drawing-in device includes pellet cylinder 3, powder cylinder 4 and doses control system.The cylinder bottom of pellet cylinder 3 and powder cylinder 4 is set
There is discharge port 5, discharge port 5 connects the charge door 1 and charge door 2 that are separately positioned on double screw extruder 01 by feed pipe 8.
Doses control system includes weight sensor, control valve and controller.Weight sensor is arranged on 3 He of pellet cylinder
The cylinder bottom of powder cylinder 4, control valve are mounted on the inlet of each feed pipe, and control valve is communicated to connect with controller.
The bottom of the pellet cylinder 3 of the present embodiment is equipped with the turntable 6 around cylinder bottom central rotation, and the diameter of turntable 6 is with cylinder bottom
Diameter is identical, meanwhile, diameter is offered on turntable 6 and is respectively less than the first through hole 61 of discharge port 5, the second through hole 62 and third through-hole
63, it when the grain size difference of pellet, can align by adjusting suitable through hole with discharge port 5, so as to reach better blanking effect
Fruit.
For the ease of adjustment, graduation mark 64 corresponding with the position of each through hole and graduated scale are equipped on the periphery of turntable 6
Know.The bottom periphery of pellet cylinder 3 is equipped with mark 31 corresponding with the position of discharge port 5.Rotating turntable 6 corresponds to respective through hole
Graduation mark 64 align with the mark 31 of grain bottom of the cylinder and represent that corresponding through hole aligns with discharge port 5.For the ease of turntable 6
Rotation, a threaded hole 65 is offered on the periphery of turntable 6, is combined with a dismountable handwheel 7 in threaded hole 65, rotates and turns
Handwheel 7 need to only be manually operated during disk 6 easily to be realized.When turntable 6 has been pivoted into definite position, handwheel 7 can be dismantled
Get off, rotate turntable to prevent encountering handwheel in blanking process, influence blanking.Two chargings are set on the twin screw extruder
Mouthful, respectively positioned at the first segment of extruder and Section five, the main and supplementary materials of variable grain degree are separately fed in double screw extruder.
Pellet is fed in spout in first segment, the spout in Section five feeds powder.Two charge doors by doses control system,
According to a certain percentage in the feeding host of substantially uniformity.Mixing uniformity is improved, ensures the stability of quality.Main and supplementary materials simultaneously
Proportioning do not needing manual weighing, it is only necessary to by quantitative feed system, control feeding capacity is the proportioning of controllable main and supplementary materials.
And then substantially reduce staff labor intensity.
The vacuum line anti-block apparatus of the present embodiment includes vacuum line and the buffering being successively set on vacuum line
Tank 13, vacuum pump 12 and cyclic water tank 18.Vacuum line includes the first pipeline 9, the second pipeline 10 and the 3rd pipeline 11, wherein,
The cylinder 01 of first pipeline 9 connection double screw extruder and the entrance of surge tank 13, the second pipeline 10 connection surge tank 13 go out
Mouth and vacuum pump 12, the 3rd pipeline 11 connection vacuum pump 12 and cyclic water tank 18, and the outlet of the 3rd pipeline 11 is passed through recirculated water
In water in case 18.
Referring to Fig. 5, surge tank 13 is resistance to be equipped with a filter screen 14, and a vibrating motor 15 is fixed on filter screen 14.It crosses
Strainer is mounted on the middle part of surge tank 13, and space in tank is separated into air inlet portion 132 and outlet portion 131, the outlet of the first pipeline 9
In air inlet portion 132, the entrance of the second pipeline 10 is located in outlet portion 131.Meanwhile in the air inlet portion 132 of surge tank 13
Bottom is equipped with a waste material clean-up port 16, facilitates the cleaning of waste material, is equipped with windowpane at the top of surge tank 13, is given up with monitoring in tank
Material situation.
Embodiment 2
Referring to Fig. 6, the double screw extruder of the present embodiment is except the mounting means of vacuum line anti-block apparatus filtering net
Difference, other are identical with the structure of embodiment 1, and details are not described herein again.
The partition plate 17 of a vertical direction is equipped in the surge tank 13 of the present embodiment, filter screen 14 is arranged on the bottom of partition plate 17
Between the inner wall of surge tank 13, the space in surge tank 13 is separated into air inlet portion 132 and outlet portion by partition plate 17 with filter screen 14
131, the outlet of the first pipeline 9 is located in air inlet portion 132, and the entrance of the second pipeline 10 is located in outlet portion 131.Meanwhile slow
The bottom for rushing the air inlet portion 132 of tank 13 is equipped with a waste material clean-up port 16, facilitates the cleaning of waste material, is equipped at the top of surge tank 13
Windowpane, to monitor waste material situation in tank.
Claims (10)
1. a kind of double screw extruder, it is characterised in that：
Including cylinder, drawing-in device and vacuum line anti-block apparatus, drawing-in device includes pellet cylinder, powder cylinder and doses control
System；
The cylinder bottom of the pellet cylinder and powder cylinder is equipped with discharge port, and discharge port is arranged on double screw extruder by feed pipe connection
On charge door；
The bottom of the pellet cylinder is equipped with one and is opened up on cylinder bottom central rotation and the turntable identical with cylinder bottom size, the turntable
There is different size of through hole, each through hole has corresponding with the discharge port so that the correspondence position of pellet output；
The doses control system includes being separately positioned on the weight sensor of the cylinder bottom of the pellet cylinder and powder cylinder, be arranged on
The control valve of the inlet of each feed pipe and the controller with the communication connection of each control valve；
The vacuum line anti-block apparatus includes an entrance and connects the vacuum line of the cylinder and be arranged on the vacuum tube
The vacuum pump of road is additionally provided with one on the vacuum line for collecting the surge tank of waste material, and the outlet of vacuum line is connected with
One cyclic water tank；One is equipped in the surge tank for stopping the filter screen of waste material, a vibrating motor is fixed on the filter screen.
2. feeding device for double screw extruder according to claim 1, it is characterised in that：
The double screw extruder includes 11 section cylinders.
3. feeding device for double screw extruder according to claim 2, it is characterised in that：
First segment cylinder and Section of five cylinder are equipped with charge door, and the pellet cylinder connects the charge door on first segment cylinder,
The powder cylinder connects the charge door on Section of five cylinder；
Section three, it is provided with vacuum anti-block apparatus on cylinder and Section of eight cylinder.
4. feeding device for double screw extruder according to claim 1, it is characterised in that：
The periphery of the turntable is equipped with a tumbler.
5. feeding device for double screw extruder according to claim 4, it is characterised in that：
The tumbler includes the threaded hole being arranged on the periphery of the turntable and is removably screwed in the screw thread
Handwheel in hole.
6. feeding device for double screw extruder according to claim 1, it is characterised in that：
The bottom periphery of the pellet cylinder is equipped with mark corresponding with the position of the discharge port, the periphery of the turntable
It is equipped with graduation mark corresponding with the position of the through hole and scale marker.
7. feeding device for double screw extruder according to claim 1, it is characterised in that：
First pipeline of the entrance of cylinder and the surge tank of the vacuum line including the connection double screw extruder,
It connects the outlet of the surge tank and the second pipeline of the vacuum pump and is connected the vacuum pump and the cyclic water tank
3rd pipeline.
8. feeding device for double screw extruder according to claim 7, it is characterised in that：
The surge tank is separated into upper and lower part by the filter screen, and the outlet of first pipeline is located at surge tank
Lower part, the entrance of second pipeline is located at the top of surge tank.
9. feeding device for double screw extruder according to claim 7, it is characterised in that：
Be equipped with the partition plate of vertical direction in the surge tank, the filter screen be arranged on partition plate bottom and surge tank it is interior
Between wall；
The outlet of first pipeline and the entrance of the second pipeline are located at two spaces by partition plate and filter screen barrier respectively
It is interior.
10. feeding device for double screw extruder according to claim 8 or claim 9, it is characterised in that：
The bottom of the surge tank offers a clean-up port for clear away waste, and a lid is covered at the clean-up port；
The top of the surge tank is equipped with a windowpane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721418894.1U CN207388253U (en) | 2017-10-30 | 2017-10-30 | A kind of double screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721418894.1U CN207388253U (en) | 2017-10-30 | 2017-10-30 | A kind of double screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207388253U true CN207388253U (en) | 2018-05-22 |
Family
ID=62327311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721418894.1U Expired - Fee Related CN207388253U (en) | 2017-10-30 | 2017-10-30 | A kind of double screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207388253U (en) |
-
2017
- 2017-10-30 CN CN201721418894.1U patent/CN207388253U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180522 Termination date: 20191030 |