CN204149359U - Screw feeder and containing its double-screw extruding pelletizing system - Google Patents
Screw feeder and containing its double-screw extruding pelletizing system Download PDFInfo
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- CN204149359U CN204149359U CN201420475017.8U CN201420475017U CN204149359U CN 204149359 U CN204149359 U CN 204149359U CN 201420475017 U CN201420475017 U CN 201420475017U CN 204149359 U CN204149359 U CN 204149359U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a kind of screw feeder and containing its double-screw extruding pelletizing system, this screw feeder comprises device for transporting objects, screw feed device and blanking tube, near left side place on the bottom surface that this blanking tube is arranged at delivery section; This screw feed device comprises screw rod and frequency control motor; This screw rod comprises bar portion and spiral and is arranged at spire on the outer wall in this bar portion, this spire comprises spacing section, discharging section and pusher section, the pitch of this discharging section is greater than the pitch of this pusher section, and the outer wall in this bar portion is also provided with an additional discharging section arranged with this discharging section parallel interval, and this additional discharging section be positioned at this blanking tube open-topped directly over.This double-screw extruding pelletizing system comprises screw feeder as above.The utility model ensure that the uniformity of blanking flow, reduces the current fluctuation of motor in double screw extruder, effectively extends the service life of double screw extruder motor.
Description
Technical field
The utility model relates to a kind of screw feeder and the double-screw extruding pelletizing system containing it.
Background technology
At present, twin-screw extrusion produces ripe production technology in the extensive use of each engineering plastics industry.Extruder also to reach its maturity and perfect in the mode of production of blanking, the structure of screw element, the precision of processing and electrical control etc.Double screw extruder can be produced various material modified and alloy material by the difference of the change of screw combinations form, the mode of production, and the quality of materials of each producer also has a continued development.
Current double screw extruder mainly uses the mode of helical feed to carry out feeding, auger conveyor is that level advances to mass transport, when material adds in fixing feed bin, due to material gravity and and feed bin between frictional force effect, the material being deposited in feed bin bottom does not rotate with helical element, and only move forward under the helical blade rotated promotes, do translational motion, to reach the object of convey materials along the screw rod rotated as non-rotary nut.Arrive feed opening and have a gravity blanking process; in this process; because material is powder/particle mixture material; stocking angle is less; partial material in same pitch is caved in; form the fluctuation of feeding flow, double screw extruder motor load is fluctuated, cause the larger fluctuation of twin-screw extrusion machine host electric current.
The main frame current fluctuation that phenomenon causes thus is approximately more than 40A, higher at feed flow, and when load on host computers is larger, the crest of feeding flowed fluctuation can cause load on host computers comparatively large, easily causes main frame overcurrent to report to the police and stops.
Utility model content
The technical problems to be solved in the utility model is that the fluctuation in order to overcome feeding flow in screw feeder in traditional double-screw extruding pelletizing system of the prior art is large, the current fluctuation of twin-screw extrusion machine host greatly, easily causes the defects such as main frame overcurrent warning parking, a kind of screw feeder and the double-screw extruding pelletizing system containing it are provided, its blanking velocity is even, flowed fluctuation when using screw rod to carry out mass transport can be reduced, guarantee the production safety of blanking stability of flow and equipment, thus reduce main frame overcurrent warning stop frequency.
The utility model solves above-mentioned technical problem by following technical proposals:
A kind of screw feeder, comprise device for transporting objects, screw feed device and blanking tube, its feature is, this device for transporting objects comprises bracing frame and is fixed on the magazine on this bracing frame, this magazine comprise vertically set gradually from top to bottom feed bin portion, framework and the delivery section that is connected with this feed bin portion, the end face that this framework is fixed on this delivery section is arranged on the bottom surface in this feed bin portion;
Near left side place on the bottom surface that this blanking tube is arranged at this delivery section, and the open top of this blanking tube is connected with the inner cavity chamber of this delivery section;
This screw feed device comprises screw rod and the frequency control motor for driving this screw rod to rotate, this frequency control motor is fixed on a sidewall of this delivery section, the output shaft of this screw rod and this frequency control motor is for being in transmission connection, and this screw rod is arranged in this delivery section;
This screw rod comprises bar portion and spiral and is arranged at spire on the outer wall in this bar portion, this spire axis comprised along this bar portion set gradually from left to right spacing section, discharging section and pusher section, this right-hand member of spacing section is near the open-topped left side of this blanking tube, the left end of this discharging section be positioned at this blanking tube open-topped directly over, the pitch of this discharging section is greater than the pitch of this pusher section, and the outer wall in this bar portion is also provided with an additional discharging section arranged with this discharging section parallel interval, and this additional discharging section be positioned at this blanking tube open-topped directly over.
In this programme, the pitch of discharging section is greater than the pitch of pusher section, the material being positioned at pusher section is made to be subject to larger thrust, ensure that the stationarity of material in feeding process, simultaneously, make the feeding speed of discharging section very fast, avoid solid accumulation in the position near blanking tube, ensure that the uniformity of blanking flow, grain powder mixture in delivery section can with evenly speed enter in double screw extruder, reduce the current fluctuation of motor in double screw extruder, effectively extend the service life of double screw extruder motor, effectively reduce the number of times that the warning of double screw extruder motor overcurrent is stopped simultaneously.
In addition, the outer wall in bar portion is also provided with the additional discharging section arranged with this discharging section parallel interval, and additional discharging section be positioned at blanking tube open-topped directly over, avoid the partial material screw rod that is positioned at above blanking tube being positioned at same pitch to cave in, further improve the uniformity of blanking flow, reduce the fluctuation of feeding flow.In addition, the setting of spacing section defines material and continues to advance left in course of conveying.
Preferably, be formed with an angle between the leading flank in this feed bin portion and trailing flank, this angle is 30 °-50 °, and the leading flank in this feed bin portion is equal with the length of trailing flank on this bar portion axis direction, and the left surface in this feed bin portion is parallel with right flank.
In this programme, adopt said structure form effectively can prevent bridging of powder, and discharge screw shape of fitting.
Preferably, align with the right flank in the vertical direction in this feed bin portion and arrange in the right side of this delivery section, and this delivery section and this feed bin portion length on the axis direction in this bar portion is than being 4:5.
Preferably, this discharging section and this pusher section length ratio on the axis direction in this bar portion is 25:9, and the pitch of this discharging section is 1.3 times of the pitch of this pusher section.
In this programme, adopting said structure form, the accumulation shape of material of can fitting preferably, maintaining good blanking velocity when ensureing thrust.
Preferably, the pitch of this additional discharging section is equal with the pitch of this discharging section, and the length of this additional discharging section on the axial direction in this bar portion is equal with the pitch of this additional discharging section.
Preferably, this additional discharging section and the distance of this discharging section be disposed adjacent on the axis direction in this bar portion are 1/2 times of the pitch of this discharging section.
Preferably, the top of this delivery section is also provided with one and is positioned at blanking observation window directly over this blanking tube.
In this programme, the blanking state of checking screw feeder is convenient in the setting of blanking observation window.
The utility model additionally provides a kind of double-screw extruding pelletizing system, comprise double screw extruder, bosh, pellet device and dehydration blower fan, this double screw extruder is connected with this pellet device by this bosh and this dehydration blower fan successively, this double screw extruder is provided with a rewinding cylinder, its feature is, this double-screw extruding pelletizing system also comprises screw feeder as above and a control device, this control device is for controlling the start and stop of this frequency control motor, the material extrusion speed of the speed of service and this double screw extruder, and this control device respectively with this frequency control motor, twin-screw extrusion mechatronics,
The blanking tube of this screw feeder is connected with the rewinding cylinder of this double screw extruder by a tremie pipe, and the angle between the center line of this tremie pipe and horizontal plane is more than or equal to 60 ° and is less than 90 °.
In this programme, the blanking tube of screw feeder is connected with the rewinding cylinder of this double screw extruder by a tremie pipe, and the angle between the center line of this tremie pipe and horizontal plane is more than or equal to 60 ° and is less than 90 °, make the blanking tube of screw feeder be positioned at the oblique upper of the rewinding cylinder of double screw extruder, material can slip into the rewinding cylinder of double screw extruder with relatively uniform speed along the tube wall of tremie pipe.
Preferably, the angle between the center line of this tremie pipe and horizontal plane is 60 °.
On the basis meeting this area general knowledge, above-mentioned each optimum condition, can be combined, and obtains each preferred embodiments of the utility model.
Positive progressive effect of the present utility model is:
The utility model structure is simple, production cost is low, production efficiency is high, ensure that the uniformity of blanking flow, grain powder mixture in delivery section can with evenly speed enter in double screw extruder, reduce the current fluctuation of motor in double screw extruder, effectively extend the service life of double screw extruder motor, effectively reduce the number of times that the warning of double screw extruder motor overcurrent is stopped simultaneously, environmental protection and energy saving, and improve product quality, be suitable for industrial-scale production, large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is the structural representation of the screw feeder of the utility model preferred embodiment.
Fig. 2 is the right view corresponding with Fig. 1.
Fig. 3 is the structural representation of screw rod in Fig. 1.
Fig. 4 is the structural representation of the double-screw extruding pelletizing system of the utility model preferred embodiment.
Description of reference numerals:
Device for transporting objects: 1 bracing frame: 11 feed bin portions: 12
Accommodating cavity: 121 frameworks: 13 delivery section: 14
Inner cavity chamber: 141 level detectors: 15
Screw feed device: 2 frequency control motors: 21 screw rods: 22
Bar portion: 221 spacing sections: 222 discharging sections: 223
Pusher section: 224 additional discharging sections: 225 blanking observation windows: 23
Blanking tube: 3
Double screw extruder: 4 rewinding cylinders: 41 tremie pipes: 42
Control device: 5
Detailed description of the invention
Lift preferred embodiment below, and come by reference to the accompanying drawings clearlyer intactly the utility model to be described.
In description of the present utility model, it will be appreciated that, term " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
As shown in Figure 1-2, the utility model screw feeder comprises device for transporting objects 1, screw feed device 2 and blanking tube 3.Wherein, this device for transporting objects 1 comprises bracing frame 11 and the magazine be fixed on bracing frame 11.This magazine comprise vertically set gradually from top to bottom feed bin portion 12, framework 13 and the delivery section 14 that is connected with this feed bin portion, the end face that this framework 13 is fixed on delivery section 14 is arranged on the bottom surface in feed bin portion 12.Wherein, this framework 13 offers an opening, the inner chamber in this feed bin portion passes through the intracavity inter-connection of this opening and this delivery section.
And the sidewall in this feed bin portion 12 is also provided with a level detector 15.Level detector 15 plays the effect detecting material surplus in feed bin, and when in feed bin, material surplus is very few, level detector produces low level signals, reminds the personnel that feed intake to feed in raw material; When in feed bin, material surplus is too much, level detector produces high charge level signal, reminds the personnel of feeding intake to stop feeding in raw material.In the present embodiment, the bottom of bracing frame 11 is provided with mobile device, and this mobile device is used for moving integrally this screw feeder.
Please understood according to Fig. 2, being formed with one in feed bin portion 12 for placing the accommodating cavity 121 of material, in delivery section 14, being formed with an inner cavity chamber 141 be connected with accommodating cavity 121.Meanwhile, near left side place on the bottom surface that blanking tube 3 is arranged on delivery section 14, and the open top of blanking tube 3 is connected with the inner cavity chamber 141 of delivery section 14.Wherein, feed bin portion 12 can be the shape of any appropriate.
Refer to shown in Fig. 1-2, in specific embodiment of the utility model, an angle is formed between the leading flank in this feed bin portion 12 and trailing flank, this angle is 30 °-50 °, and the leading flank in feed bin portion 12 is equal with the length of trailing flank on this bar portion 221 axis direction, the left surface in feed bin portion 12 is parallel with right flank.Effectively can prevent bridging of powder like this, and discharge screw shape of fitting.In the present embodiment, this angle is preferably 40 °.
In addition, delivery section 14 is be applicable to the cylinder of spiral blanking, and the top open part making material can be pushed into blanking tube 3 by spiral vertically falls because of Action of Gravity Field.Preferably, align with the right flank in the vertical direction in this feed bin portion 12 and arrange in the right side of this delivery section 14, and this delivery section 14 and this feed bin portion 12 length on the axis direction in this bar portion 221 is than being 4:5.
Please understood according to Fig. 2, the frequency control motor 21 that this screw feed device 2 comprises screw rod 22 and rotates for drive screw 22.Wherein, this frequency control motor 21 is fixed on a sidewall of this delivery section 14, and the output shaft of screw rod 22 and frequency control motor 21 is for being in transmission connection, and screw rod 22 is arranged in delivery section 14.
Please understood according to Fig. 3, this screw rod 22 comprises bar portion 221 and spiral and is arranged at spire on the outer wall in bar portion 221.This spire axis comprised along bar portion 221 set gradually from left to right spacing section 222, discharging section 223 and pusher section 224, this right-hand member of spacing section 222 near the open-topped left side of blanking tube 3, the left end of this discharging section 223 be positioned at this blanking tube 3 open-topped directly over.Wherein, the pitch of discharging section 223 is greater than the pitch of pusher section 224.
It can thus be appreciated that screw rod 22 is varying pitch in screw feeder as above, pitch designs according to the shape of solid accumulation.When material adds in delivery section 14, due to material gravity and with delivery section 14 bottom frictional force effect, be deposited in material bottom delivery section 14 and do not rotate with spire, and only move forward under the blade of the spire rotated promotes.In specific embodiment of the utility model, shown in Figure 3, the solid accumulation near frequency control motor 21 side is more, therefore pitch is less, and conveying dynamics is more sufficient; Less near blanking tube 3 side solid accumulation, therefore pitch is longer, transporting velocity is very fast.And the discharging section 223 of screw rod 22 in the end increases by one section of flight within the scope of one section of pitch in screw feeder, shown in Figure 3, set up as double helix sheet by single-screw sheet, make blanking flow more uniform and stable.
In addition, the flight of screw feeder screw rod 22 used above blanking tube 3 cuts, shown in Figure 2, make actual thread shape lower than normal screw thread form, make last pitch with certain tapering, play the effect stoping material to be built bridge, make blanking flow more uniform and stable.
In the present embodiment, the pitch of discharging section 223 is greater than the pitch of pusher section 224, the material being positioned at pusher section 224 is made to be subject to larger thrust, ensure that the stationarity of material in feeding process, simultaneously, make the feeding speed of discharging section 223 very fast, avoid solid accumulation in the position near blanking tube 3, ensure that the uniformity of blanking flow, grain powder mixture in delivery section 14 can with evenly speed enter in double screw extruder 4, reduce the current fluctuation of motor in double screw extruder 4, effectively extend the service life of double screw extruder 4 motor, effectively reduce the number of times that the warning of double screw extruder 4 motor overcurrent is stopped simultaneously.
In addition, the outer wall in bar portion 221 is also provided with the additional discharging section 225 arranged with this discharging section 223 parallel interval, and additional discharging section 225 be positioned at blanking tube 3 open-topped directly over.This avoid the partial material screw rod that is positioned at above blanking tube 3 being positioned at same pitch to cave in, further improve the uniformity of blanking flow, reduce the fluctuation of feeding flow.In addition, the setting of spacing section 222 defines material and continues to advance left in course of conveying.
Please understood according to Fig. 3, this discharging section 223 and this pusher section 224 length ratio on the axis direction in this bar portion 221 is 25:9, and the pitch of this discharging section 223 is 1.3 times of the pitch of this pusher section 224.In the present embodiment, the pitch of pusher section 224 is 90mm, and the length of pusher section 224 on the axis direction in this bar portion 221 is 450mm, and the pitch of discharging section 223 is 120mm, and the length of discharging section 223 on the axis direction in this bar portion 221 is 1250mm.
Further, the pitch of this additional discharging section 225 is equal with the pitch of discharging section, and the additional length of discharging section 225 on the axial direction in this bar portion 221 is equal with the pitch of additional discharging section 225.Meanwhile, additional discharging section 225 and the distance of the discharging section 223 be disposed adjacent on the axis direction in bar portion 221 are 1/2 times of the pitch of discharging section 223.
Further, the top of this delivery section 14 is also provided with one and is positioned at blanking observation window 23 directly over this blanking tube 3.Shown in Figure 1, be convenient to the blanking state of checking screw feeder by blanking observation window 23.
Please understood according to Fig. 4, the utility model additionally provides a kind of double-screw extruding pelletizing system, and it comprises double screw extruder 4, bosh (not shown), pellet device (not shown) and dehydration blower fan (not shown).Wherein, this double screw extruder 4 is connected with this pellet device by this bosh and this dehydration blower fan successively, and this double screw extruder 4 is provided with a rewinding cylinder 41.
In addition, this double-screw extruding pelletizing system also comprises screw feeder as above and a control device 5.This control device 5 is for controlling the material extrusion speed of the start and stop of this frequency control motor 21, the speed of service and this double screw extruder 4, and this control device 5 is electrically connected with this frequency control motor 21, double screw extruder 4 respectively.
As shown in Figure 4, the blanking start-stop of screw feeder can by the switch control rule in the control device 5 of double screw extruder 4.The blanking velocity of described screw feeder can by the Frequency Converter Control in the control device 5 of double screw extruder 4, in specific embodiment of the utility model, with a set of frequency converter in the control device 5 of double screw extruder 4, export the Current Control frequency control motor 21 of CF.
In addition, the blanking tube 3 of this screw feeder is connected with the rewinding cylinder 41 of this double screw extruder 4 by a tremie pipe 42, and the angle between the center line of this tremie pipe 42 and horizontal plane can be the arbitrary inclination being greater than 60 ° and being less than between 90 °.Make the blanking tube 3 of screw feeder be positioned at the oblique upper of the rewinding cylinder 41 of double screw extruder 4 like this, material can slip into the rewinding cylinder 41 of double screw extruder 4 with relatively uniform speed along the tube wall of tremie pipe 42.Shown in Figure 4, in specific embodiment of the utility model, described tremie pipe 42 is approximately 60 ° with horizontal plane angle, ensures that material out of plumb falls into extruder receiving opening and causes larger current fluctuation.In the present embodiment, the material of this tremie pipe 42 is PE film.
In order to embody the effect of screw feeder of the present utility model, adopt the double-screw extruding pelletizing system of above-mentioned use screw feeder of the present utility model, and use the double-screw extruding pelletizing system of common screw feeder, carry out following test.
Polypropylene material and additive are mixed, 1 minute-3 minutes are mixed in high-speed mixer, use common screw feeder and screw feeder of the present utility model, both are carried out blanking by setting simultaneously, ensure that talcous content is 30%, 40% and 50%, is produced by double-screw extruding pelletizing system, resin temperature controls at 250 degrees centigrade, under test same amount, the current fluctuation situation of double screw extruder 4 motor in 3 minutes.
Table 1
As can be seen from upper table table 1, when other device is all identical, relative to common screw feeder, use the twin-screw extrusion machine host electric current of screw feeder of the present utility model more stable.
To sum up, the design of the utility model screw feeder is ingenious, charger can be reduced to feed in raw material the fluctuation of flow, reduce the current fluctuation of double screw extruder, improve the quality of products, guarantee the production efficiency of client, environmental protection and energy saving, structure is simple, and cost is low, is suitable for industrial-scale production, large-scale promotion application.
Although the foregoing describe detailed description of the invention of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these embodiments, but these change and amendment all falls into protection domain of the present utility model.
Claims (9)
1. a screw feeder, comprise device for transporting objects, screw feed device and blanking tube, it is characterized in that, this device for transporting objects comprises bracing frame and is fixed on the magazine on this bracing frame, this magazine comprise vertically set gradually from top to bottom feed bin portion, framework and the delivery section that is connected with this feed bin portion, the end face that this framework is fixed on this delivery section is arranged on the bottom surface in this feed bin portion;
Near left side place on the bottom surface that this blanking tube is arranged at this delivery section, and the open top of this blanking tube is connected with the inner cavity chamber of this delivery section;
This screw feed device comprises screw rod and the frequency control motor for driving this screw rod to rotate, this frequency control motor is fixed on a sidewall of this delivery section, the output shaft of this screw rod and this frequency control motor is for being in transmission connection, and this screw rod is arranged in this delivery section;
This screw rod comprises bar portion and spiral and is arranged at spire on the outer wall in this bar portion, this spire axis comprised along this bar portion set gradually from left to right spacing section, discharging section and pusher section, this right-hand member of spacing section is near the open-topped left side of this blanking tube, the left end of this discharging section be positioned at this blanking tube open-topped directly over, the pitch of this discharging section is greater than the pitch of this pusher section, and the outer wall in this bar portion is also provided with an additional discharging section arranged with this discharging section parallel interval, and this additional discharging section be positioned at this blanking tube open-topped directly over.
2. screw feeder as claimed in claim 1, it is characterized in that, an angle is formed between the leading flank in this feed bin portion and trailing flank, this angle is 30 °-50 °, and the leading flank in this feed bin portion is equal with the length of trailing flank on this bar portion axis direction, the left surface in this feed bin portion is parallel with right flank.
3. screw feeder as claimed in claim 2, it is characterized in that, align with the right flank in the vertical direction in this feed bin portion and arrange in the right side of this delivery section, and this delivery section and this feed bin portion length on the axis direction in this bar portion is than being 4:5.
4. screw feeder as claimed in claim 3, is characterized in that, this discharging section and this pusher section length ratio on the axis direction in this bar portion is 25:9, and the pitch of this discharging section is 1.3 times of the pitch of this pusher section.
5. screw feeder as claimed in claim 1, it is characterized in that, the pitch of this additional discharging section is equal with the pitch of this discharging section, and the length of this additional discharging section on the axial direction in this bar portion is equal with the pitch of this additional discharging section.
6. screw feeder as claimed in claim 5, it is characterized in that, this additional discharging section and the distance of this discharging section be disposed adjacent on the axis direction in this bar portion are 1/2 times of the pitch of this discharging section.
7. as the screw feeder in claim 1-6 as described in any one, it is characterized in that, the top of this delivery section is also provided with one and is positioned at blanking observation window directly over this blanking tube.
8. a double-screw extruding pelletizing system, comprise double screw extruder, bosh, pellet device and dehydration blower fan, this double screw extruder is connected with this pellet device by this bosh and this dehydration blower fan successively, this double screw extruder is provided with a rewinding cylinder, it is characterized in that, this double-screw extruding pelletizing system also comprises screw feeder as claimed in claim 1 and a control device, this control device is for controlling the start and stop of this frequency control motor, the material extrusion speed of the speed of service and this double screw extruder, and this control device respectively with this frequency control motor, twin-screw extrusion mechatronics,
The blanking tube of this screw feeder is connected with the rewinding cylinder of this double screw extruder by a tremie pipe, and the angle between the center line of this tremie pipe and horizontal plane is more than or equal to 60 ° and is less than 90 °.
9. double-screw extruding pelletizing system as claimed in claim 8, it is characterized in that, the angle between the center line of this tremie pipe and horizontal plane is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475017.8U CN204149359U (en) | 2014-08-21 | 2014-08-21 | Screw feeder and containing its double-screw extruding pelletizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475017.8U CN204149359U (en) | 2014-08-21 | 2014-08-21 | Screw feeder and containing its double-screw extruding pelletizing system |
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| CN204149359U true CN204149359U (en) | 2015-02-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107296551A (en) * | 2016-12-23 | 2017-10-27 | 佛山市顺德区美的电热电器制造有限公司 | Rice bin component and cooking apparatus |
| CN114889092A (en) * | 2022-05-30 | 2022-08-12 | 张瑞洋 | Co-rotating conical double-screw extruder for polyolefin extrusion foaming processing |
-
2014
- 2014-08-21 CN CN201420475017.8U patent/CN204149359U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107296551A (en) * | 2016-12-23 | 2017-10-27 | 佛山市顺德区美的电热电器制造有限公司 | Rice bin component and cooking apparatus |
| CN114889092A (en) * | 2022-05-30 | 2022-08-12 | 张瑞洋 | Co-rotating conical double-screw extruder for polyolefin extrusion foaming processing |
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