CN204136392U - A kind of double screw extruder - Google Patents
A kind of double screw extruder Download PDFInfo
- Publication number
- CN204136392U CN204136392U CN201420355339.9U CN201420355339U CN204136392U CN 204136392 U CN204136392 U CN 204136392U CN 201420355339 U CN201420355339 U CN 201420355339U CN 204136392 U CN204136392 U CN 204136392U
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- extruding pipe
- extruding
- motor
- extrusion
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Abstract
The utility model is a kind of double screw extruder, comprises extruding pipe, motor, twin-screw device, extrusion device, feeding bin, preheating device and cooling device; One end of extruding pipe is provided with motor, and the other end is provided with extrusion device; Twin-screw device is installed in extruding pipe; Feeding bin is fixed by spout and extruding pipe, is provided with agitator in feeding bin, and agitator is fixed with sieve plate above spout, is fixed with horizontal taper wheel in the below of spout; Preheating device comprises motor backing and thermal insulation layer; Motor backing is evenly fixed on the outer surface of extruding pipe; Thermal insulation layer by extruding pipe parcel therein; Cooling device is installed on the below of extruding pipe; Extrusion device comprises flowmeter, reversal valve, driving machine and extruder head.The utility model operating cost is low, reduces the production cost of enterprise; Extrusion efficiency is high, quality good; Be convenient to clean and maintenance.
Description
Technical field
The invention belongs to extrusion equipment field, be specifically related to a kind of double screw extruder.
Background technology
Double screw extruder is widely used in the filling of the macromolecular materials such as general-purpose plastics, engineering plastics, thermoplastic elastomer, enhancing, the blending and modifying such as toughness reinforcing, and the manufacture field such as special fibre, special adhesive.Not only transmission power is relatively low for the double screw extruder of current use, and all needs more mold exchange before extruding at every turn, causes the extrusion efficiency of double screw extruder lower.
Therefore, developing a kind of double screw extruder with high extrusion efficiency is the required difficult problems solved of those skilled in the art.
Summary of the invention
For solving the problem, the invention discloses a kind of double screw extruder.
In order to achieve the above object, the invention provides following technical scheme:
A kind of double screw extruder, comprises extruding pipe, motor, twin-screw device, extrusion device, feeding bin, preheating device and cooling device; One end of extruding pipe is provided with motor, and the other end is provided with extrusion device; Twin-screw device is installed in extruding pipe, comprises fixed disk, the first gear, the second gear, the first screw rod and the second screw rod; The inwall of fixed disk and extruding pipe fixes, the power transmission shaft of motor is fixed with drive through fixed head, fixed disk is rotatably connected to the first gear, the second gear and vertical taper cone pulley, wherein the first gear is meshed with drive, the second gear and drive from; Vertical taper cone pulley is meshed with the first gear, and with drive and the second gear from; First gear is connected by chain with the second gear; First screw rod and the first gear fix, and the second screw rod and the second gear fix; Feeding bin is fixed by spout and extruding pipe, is provided with agitator in feeding bin, and agitator is fixed with sieve plate above spout, is fixed with horizontal taper wheel in the below of spout; Horizontal taper wheel is meshed with vertical taper cone pulley; Preheating device comprises motor backing and thermal insulation layer; Motor backing is evenly fixed on the outer surface of extruding pipe; Thermal insulation layer by extruding pipe parcel therein; Cooling device is installed on the below of extruding pipe; Extrusion device comprises flowmeter, reversal valve, driving machine and extruder head; Reversal valve and extruding pipe fix, and are connected with flowmeter and extruder head; Driving machine is connected with flowmeter and reversal valve.
The present invention is a kind of double screw extruder, is made up of extruding pipe, motor, twin-screw device, extrusion device, feeding bin, preheating device and cooling device.The two ends of extruding pipe are separately installed with motor and extrusion device, and twin-screw device is installed on the inside of extruding pipe; Feeding bin is installed on the one end near motor on extruding pipe, and preheating device is installed on the surface of extruding pipe, and cooling device is installed on the below of extruding pipe.After electric motor starting, drive the twin-screw device in extruding pipe to rotate, and carry out feeding from feeding bin, under the rotation of twin-screw, the continuous driven forward of the material in extruding pipe, arrives extrusion device and extrudes.Preheating device can heat extruding pipe, maintains the fluid state of material in extruding pipe; And when the material higher to temperature accuracy is extruded, cooling device can also be started and carry out temperature control.
Twin-screw device in the present invention comprises fixed disk, the first gear, the second gear, the first screw rod and the second screw rod; The inwall of fixed disk and extruding pipe fixes, the power transmission shaft of motor is fixed with drive through fixed head, fixed disk is rotatably connected to the first gear, the second gear and vertical taper cone pulley, wherein the first gear is meshed with drive, the second gear and drive from; Vertical taper cone pulley is meshed with the first gear, and with drive and the second gear from; First gear is connected by chain with the second gear; First screw rod and the first gear fix, and the second screw rod and the second gear fix.The present invention is fixed with drive by the power transmission shaft of motor, drive is driven to rotate when motor rotates, the first gear be now meshed with drive rotates simultaneously, chain is used to be connected with the first gear, and with drive from the second gear and the first gear rotating Vortex, and drive the vertical taper cone pulley that is meshed with the first gear to rotate.Take turns because the agitator in feeding bin is fixed with the horizontal taper be meshed with vertical taper cone pulley, therefore when vertical taper cone pulley rotates, horizontal taper wheel also rotates thereupon, drives agitator to carry out Stirring.The present invention has just used a motor just to drive the rotation of twin-screw and agitator, then by controlling gear ratio, both can control the velocity of rotation of each parts, also can reach the object of high-efficiency rotating, for enterprise saves production cost simultaneously.
Preheating device in the present invention comprises motor backing and thermal insulation layer, and motor backing evenly fixes the outer surface with extruding pipe, can carry out homogeneous heating to extruding pipe, maintains the fluid state of material in extruding pipe; And use thermal insulation layer to be wrapped up by extruding pipe, effectively can preserve the heat in extruding pipe, make motor backing can carry out intermittence heating, saved the energy, reduced production cost.The present invention is also provided with cooling device in the below of extruding pipe in addition, and when needing the material higher to temperature accuracy to some to extrude, can control temperature by opening cooling device, that can improve material extrudes quality.
Extrusion device in the present invention comprises flowmeter, reversal valve, driving machine and extruder head; Reversal valve and extruding pipe fix, and are connected with flowmeter and extruder head; Driving machine is connected with flowmeter and reversal valve.The present invention monitors the fluid foods arriving reversal valve by arranging flowmeter, reaches certain numerical value, the driving machine be connected with flowmeter and reversal valve once the fluid foods arriving reversal valve, controls reversal valve and commutates.Therefore the present invention is when extruding material, only needs to prepare multiple extrusion die simultaneously, just can carry out material to multiple mould successively and extrude, can significantly improve the extrusion efficiency of material.
As preferably, between extruding pipe and extrusion device, fluid pressure balance device is also installed; Fluid pressure balance device comprises extruded tube, ram pot and slide bar; Extruded tube is cylindric, and its radial direction is provided with charging aperture, is axially arranged with extrusion, and is provided with columned slide bar cavity; Ram pot is connected with extruded tube, and its inside is installed on hydraulic cylinder; Slide bar is cylindric, is slidably mounted in ram pot, and its diameter is less than the diameter of slide bar cavity, and is connected with hydraulic cylinder; Charging aperture is connected by feed pipe with extruding pipe, and the outer surface of feed pipe is evenly provided with four La Erka, and extruding pipe is provided with a circle groove near one end of feed pipe; La Erka and fit depressions; Outlet is connected with reversal valve.
The present invention is also provided with fluid pressure balance device between extruding pipe and extrusion device, extruding pipe inside can be made can to fill by tragedy fluid foods all the time, avoid owing to producing air and impact the quality of extruded material.And the present invention is evenly provided with four La Erka at the outer surface of feed pipe, extruding pipe is provided with a circle groove near one end of feed pipe, the feed pipe with La Erka is made to form female joint, and form male joint with the extruding pipe of a circle groove, both are common forms Earrings type snap joint, dismounting is more prone to, is convenient to clean extruding pipe inside and safeguard.
As preferably, the sidewall of ram pot offers latasuture; One end that slide bar is positioned at ram pot is connected with pointer by latasuture; Pointer is connected with displacement sensor; Displacement sensor is connected with motor.
When the fluid foods in extruding pipe is less, the pressure in extruding pipe is lower, and the fluid foods in slide bar cavity, to extrusion, supplements and carries out, in system, making pressure temporarily reach balance by Hydraulic Cylinder slide bar; The pointer be simultaneously connected with slide bar drives displacement sensor to move, and displacement sensor, to motor signal transmission, improves rotating speed, improves the input quantity of extruding pipe inner fluid material, and the pressure in extruding pipe gos up, and makes slide bar return equilbrium position.
Otherwise, when the fluid foods in extruding pipe is more, cause the pressure in extruding pipe higher; Slide bar will slide to the direction contrary with extrusion, and unnecessary fluid foods is buffered in slide bar cavity, temporarily keeps the constant pressure of extruding pipe inner fluid material; The pointer be simultaneously connected with slide bar drives displacement sensor to move, and displacement sensor, to motor signal transmission, reduces rotating speed, reduces the input quantity of fluid foods, reduces the pressure of extruding pipe inner fluid material, makes slide bar return equilbrium position.
As preferably, the first screw rod is identical with the second screw rod, includes feeding section and extruding zone; Feeding section is positioned at the below of spout, and its length is the 30-40% of spiro rod length; The pitch of extruding zone is 2:1-1.5:1 with the ratio of the pitch of feeding section.
The feeding section that screw rod is divided into screw thread closeer by the present invention and the extruding zone that screw thread is comparatively dredged, the closeer feeding section of screw thread had both been less likely to occur anti-glue and expect with gambling, simultaneously or obtaining feeding becomes easy; And the Design of Screw Thread on extruding zone is obtained comparatively loose, make the space of extruding zone larger relative to the space of feeding section, the extruding zone that fluid foods can be larger to space is flowed, reduces the stress produced when feeding section rotates, improve the anti-break performance of feeding section.
As preferably, cooling device is soft water cooling device.
The present invention uses soft water cooling device to cool extruding pipe, because when extruding pipe cools, a large amount of water can be evaporated, ion concentration in water can rise by straight line, a large amount of foulant can be produced in the inside of cooling device, cause heat transfer effect sharply to worsen, easily produce all kinds of corrosion, therefore use soft water cooling device to cool in the present invention.
As preferably, reversal valve is solenoid directional control valve.
Solenoid directional control valve selected by reversal valve in the present invention, makes it possible to when commutating, more rapidly with efficient.
As preferably, the gear ratio that vertical taper cone pulley and horizontal taper are taken turns is 1-2.
The gear ratio that vertical taper cone pulley and horizontal taper are taken turns controls between 1 to 2 by the present invention, the speed of agitator in feeding bin can be controlled, fluid foods in feeding bin can either be stirred, also can prevent from causing because mixing speed is too fast the immanent structure of the fluid foods in feeding bin be destroyed and sputter feeding bin.
The present invention, compared with existing double screw extruder, by being meshed and chain connection between gear, only needs a motor just can drive the rotation of twin-screw and agitator; And the present invention is provided with the fluid pressure balance device for maintaining fluid mechanics state and fluid pressure, can ensure the quality that fluid foods is extruded.Therefore effective effect of the present invention is: (1) equipment operating cost is low, reduces the production cost of enterprise; (2) extrusion efficiency is high, quality good; (3) clean and maintenance is convenient to.
Accompanying drawing explanation
Fig. 1, structural representation of the present invention;
The structural representation of fixed disk in Fig. 2, the present invention;
The structural representation of fluid pressure balance device in Fig. 3, the present invention.
Reference numerals list: extruding pipe 1, motor 2, feeding bin 3, fixed disk 4, first gear 5, second gear 6, first screw rod 7, second screw rod 8, drive 9, vertical taper cone pulley 10, agitator 11, sieve plate 12, horizontal taper wheel 13, motor backing 14, thermal insulation layer 15, flowmeter 16, reversal valve 17, driving machine 18, extruder head 19, extruded tube 20, ram pot 21, slide bar 22, charging aperture 23, extrusion 24, slide bar cavity 25, hydraulic cylinder 26, feed pipe 27, pointer 28, displacement sensor 29, soft water cooling device 30.
Detailed description of the invention
Below with reference to specific embodiment, technical scheme provided by the invention is described in detail, following detailed description of the invention should be understood and be only not used in for illustration of the present invention and limit the scope of the invention.
Be illustrated in figure 1 structural representation of the present invention, the present invention is a kind of double screw extruder, comprises extruding pipe 1, motor 2, twin-screw device, extrusion device, feeding bin 3, preheating device and soft water cooling device 30.
One end of extruding pipe 1 is provided with motor 2, and the other end is provided with extrusion device; Twin-screw device is installed in extruding pipe 1, as shown in Figure 2, comprises fixed disk 4, first gear 5, second gear 6, first screw rod 7 and the second screw rod 8; First screw rod 7 is identical with the second screw rod 8, includes feeding section and extruding zone; Feeding section is positioned at the below of spout, and its length is the 30-40% of spiro rod length; The pitch of extruding zone is 2:1 with the ratio of the pitch of feeding section.
Fixed disk 4 fixes with the inwall of extruding pipe 1, the power transmission shaft of motor 2 is fixed with drive 9 through fixed disk 4, fixed disk 4 is rotatably connected to the first gear 5, second gear 6 and vertical taper cone pulley 10, wherein the first gear 5 is meshed with drive 9, the second gear 6 and drive 9 from; Vertical taper cone pulley 10 is meshed with the first gear 5, and with drive 9 and the second gear 6 from; Shown first gear 5 is connected by chain with the second gear 6; First screw rod 7 and the first gear 5 fix, and the second screw rod 8 and the second gear 6 fix; Feeding bin 3 is fixed by spout and extruding pipe 1, is provided with agitator 11 in feeding bin 3, and agitator 11 is fixed with sieve plate 12 above spout, is fixed with horizontal taper wheel 13 in the below of spout; Horizontal taper wheel 13 is meshed with vertical taper cone pulley 10, and the gear ratio that vertical taper cone pulley 10 and horizontal taper take turns 13 is 1-2.
Preheating device comprises motor backing 14 and thermal insulation layer 15; Motor backing 14 is evenly fixed on the outer surface of extruding pipe 1; Extruding pipe 1 wraps up therein by thermal insulation layer 15.
Soft water cooling device 30 is installed on the below of extruding pipe 1.
Extrusion device comprises flowmeter 16, reversal valve 17, driving machine 18 and extruder head 19; Reversal valve 17 and extruding pipe 1 fix, and are connected with flowmeter 16 and extruder head 19; Driving machine 18 is connected with flowmeter 16 and reversal valve 17, and wherein, reversal valve 17 is solenoid directional control valve.
Between extruding pipe 1 and extrusion device, fluid pressure balance device is also installed; As shown in Figure 3, fluid pressure balance device comprises extruded tube 20, ram pot 21 and slide bar 22; Extruded tube 20 is cylindric, and its radial direction is provided with charging aperture 23, is axially arranged with extrusion 24, and is provided with columned slide bar cavity 25; Ram pot 21 is connected with extruded tube 20, and its inside is provided with hydraulic cylinder 26; Slide bar 22 is cylindric, and be slidably mounted in ram pot 21, its diameter is less than the diameter of slide bar cavity 25, and is connected with hydraulic cylinder 26; The sidewall of ram pot 21 offers latasuture; One end that slide bar 22 is positioned at ram pot 21 is connected with pointer 28 by latasuture; Pointer 28 is connected with displacement sensor 29; Displacement sensor 29 is connected with motor 2; Charging aperture 23 is connected by feed pipe 27 with extruding pipe 1, and the outer surface of feed pipe 27 is evenly provided with four La Erka, and extruding pipe 1 is provided with a circle groove near one end of feed pipe 27; La Erka and fit depressions; Extrusion 24 is connected with reversal valve 17; Flowmeter 16 is between extrusion 24 and reversal valve 17.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and non-limiting technical scheme, those of ordinary skill in the art is to be understood that, those are modified to technical scheme of the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.
Claims (7)
1. a double screw extruder, is characterized in that: comprise extruding pipe (1), motor (2), twin-screw device, extrusion device, feeding bin (3), preheating device and cooling device; One end of described extruding pipe (1) is provided with motor (2), and the other end is provided with extrusion device; Described twin-screw device is installed in extruding pipe (1), comprises fixed disk (4), the first gear (5), the second gear (6), the first screw rod (7) and the second screw rod (8); Described fixed disk (4) fixes with the inwall of extruding pipe (1), the power transmission shaft of motor (2) is fixed with drive (9) through fixed disk (4), fixed disk (4) is rotatably connected to the first gear (5), the second gear (6) and vertical taper cone pulley (10), wherein the first gear (5) is meshed with drive (9), the second gear (6) and drive (9) from; Vertical taper cone pulley (10) is meshed with the first gear (5), and with drive (9) and the second gear (6) from; Shown first gear (5) is connected by chain with the second gear (6); Described first screw rod (7) and the first gear (5) fix, and the second screw rod (8) and the second gear (6) fix; Described feeding bin (3) is fixed by spout and extruding pipe (1), agitator (11) is installed in feeding bin (3), and agitator (11) is fixed with sieve plate (12) above spout, be fixed with horizontal taper wheel (13) in the below of spout; Described horizontal taper wheel (13) is meshed with vertical taper cone pulley (10); Described preheating device comprises motor backing (14) and thermal insulation layer (15); Described motor backing (14) is evenly fixed on the outer surface of extruding pipe (1); Described thermal insulation layer (15) by extruding pipe (1) parcel therein; Described cooling device is installed on the below of extruding pipe (1); Described extrusion device comprises flowmeter (16), reversal valve (17), driving machine (18) and extruder head (19); Described reversal valve (17) and extruding pipe (1) fix, and are connected with flowmeter (16) and extruder head (19); Described driving machine (18) is connected with flowmeter (16) and reversal valve (17).
2. a kind of double screw extruder according to claim 1, is characterized in that: be also provided with fluid pressure balance device between described extruding pipe (1) and extrusion device; Described fluid pressure balance device comprises extruded tube (20), ram pot (21) and slide bar (22); Described extruded tube (20) is for cylindric, and its radial direction is provided with charging aperture (23), is axially arranged with extrusion (24), and is provided with columned slide bar cavity (25); Described ram pot (21) is connected with extruded tube (20), and its inside is provided with hydraulic cylinder (26); Described slide bar (22) is for cylindric, and be slidably mounted in ram pot (21), its diameter is less than the diameter of slide bar cavity (25), and is connected with hydraulic cylinder (26); Described charging aperture (23) is connected by feed pipe (27) with extruding pipe (1), and the outer surface of feed pipe (27) is evenly provided with four La Erka, and extruding pipe (1) is provided with a circle groove near one end of feed pipe (27); Described La Erka and fit depressions; Described extrusion (24) is connected with reversal valve (17); Flowmeter (16) is positioned between extrusion (24) and reversal valve (17).
3. a kind of double screw extruder according to claim 2, is characterized in that: the sidewall of described ram pot (21) offers latasuture; One end that described slide bar (22) is positioned at ram pot (21) is connected with pointer (28) by latasuture; Described pointer (28) is connected with displacement sensor (29); Described displacement sensor (29) is connected with motor (2).
4. a kind of double screw extruder according to claim 1, is characterized in that: described first screw rod (7) is identical with the second screw rod (8), includes feeding section and extruding zone; Described feeding section is positioned at the below of spout, and its length is the 30-40% of spiro rod length; The pitch of described extruding zone is 2:1-1.5:1 with the ratio of the pitch of feeding section.
5. a kind of double screw extruder according to claim 1, is characterized in that: described cooling device is soft water cooling device (30).
6. a kind of double screw extruder according to claim 1 and 2, is characterized in that: described reversal valve (17) is solenoid directional control valve.
7. a kind of double screw extruder according to claim 1, is characterized in that: the gear ratio that described vertical taper cone pulley (10) and horizontal taper take turns (13) is 1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420355339.9U CN204136392U (en) | 2014-10-09 | 2014-10-09 | A kind of double screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420355339.9U CN204136392U (en) | 2014-10-09 | 2014-10-09 | A kind of double screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204136392U true CN204136392U (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420355339.9U Expired - Fee Related CN204136392U (en) | 2014-10-09 | 2014-10-09 | A kind of double screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204136392U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191587A (en) * | 2014-10-09 | 2014-12-10 | 苏州博云塑业有限公司 | Double-screw extruder |
| CN105216275A (en) * | 2015-10-26 | 2016-01-06 | 重庆久通技术有限公司 | Double screw extruder |
-
2014
- 2014-10-09 CN CN201420355339.9U patent/CN204136392U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191587A (en) * | 2014-10-09 | 2014-12-10 | 苏州博云塑业有限公司 | Double-screw extruder |
| CN105216275A (en) * | 2015-10-26 | 2016-01-06 | 重庆久通技术有限公司 | Double screw extruder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20161009 |