CN105066609A - Double-screw drying machine - Google Patents
Double-screw drying machine Download PDFInfo
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- CN105066609A CN105066609A CN201510511866.3A CN201510511866A CN105066609A CN 105066609 A CN105066609 A CN 105066609A CN 201510511866 A CN201510511866 A CN 201510511866A CN 105066609 A CN105066609 A CN 105066609A
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- screw
- twin
- machine barrel
- machine
- drying
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- 238000001035 drying Methods 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000000284 extract Substances 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 abstract description 10
- 238000006297 dehydration reaction Methods 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 239000011345 viscous material Substances 0.000 description 16
- 239000002699 waste material Substances 0.000 description 13
- 239000004033 plastic Substances 0.000 description 12
- 229920003023 plastic Polymers 0.000 description 12
- 239000002893 slag Substances 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 6
- 239000003973 paint Substances 0.000 description 5
- 238000010422 painting Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a double-screw drying machine. The double-screw drying machine comprises a feeding system, a transmission system and a material drying system. The material drying system comprises a machine barrel. The feeding system is arranged at one end of the machine barrel. Double screws are contained in the machine barrel and driven by the transmission system. A material falling machine head is arranged at the other end of the machine barrel and used for discharging dried materials. A heating device is arranged on the outer side of the machine barrel and used for heating materials in the machine barrel. Gas exhaust ports are further arranged in the machine barrel at intervals and used for exhausting gas generated due to devolatilization of the materials in the machine barrel. The double-screw drying machine is high in dehydration capability, efficient and safe and has good economic benefits and social benefits.
Description
Technical field
The invention belongs to drying machine field, relate in particular to the twin-screw drying machine of deep dehydration decrement being applicable to all viscous materials, waste residue.By twin-screw extruder, vacuum and heating acting in conjunction, the solid-liquid depth drying painting slag class viscosity waste residue, mud class waste residue etc. can be realized.
Background technology
In the production process of the manufacturings such as automobile, chemical industry, furniture, every day all can produce a large amount of discarded objects, such as paint line can produce a large amount of waste paint slag and paint mud, and paint slag and paint mud classify as danger wastes, requires all very strict to the management of danger wastes and disposing.Domestic to painting slag employing suspension system separation or manually fishing at present, the mode of pack natural subsidence carries out dehydration decrement; Some producer adopts belt vacuum dewaterer, but the dehydrating effect of this system is limited, can only reach about 55%, is difficult to the deep dehydration realizing viscous material.
Because the viscosity painting slag is extremely strong, also rarely has effective dewatering type at present.Pack natural sedimentation needs the longer time, takies inventory resource, and cause transhipment and treatment effeciency greatly to reduce, expense rolls up; The Purely mechanical such as band drier and plate and frame filter press dewatering has limitation, moisture content can only be reduced to about 55%.
Summary of the invention
The present invention is in order to solve existing drying system field Problems existing, adopt twin-screw extruder, vacuum draw and add the mode of thermal, make full use of twin-screw and can realize self-cleaning feature to viscous material, realize depth drying and the significantly decrement treatment of viscous material, the moisture content of viscous material can be reduced to less than 15% even lower.
Specifically, present invention employs following technical scheme:
A kind of twin-screw drying machine, comprise feed system, transmission system and material drying system, it is characterized in that, described material drying system comprises machine barrel, feed system is arranged at one end of machine barrel, twin-screw is held in machine barrel, twin-screw is by transmission system drives, at the other end of machine barrel, blanking head is set for exporting dried material, machine barrel arranged outside heater heats the material in machine barrel, the gas that machine barrel is also provided with exhaust outlet produces for the material devolatilization of discharging in machine barrel every one section.
Preferably, two screw rod engagements close to each other of described twin-screw.
Preferably, the rotating speed of described twin-screw is 0-50RPM, is more preferably 10-20RPM.
In another preferred embodiment of the present, the ratio between the pitch of screw rod and thread height is 2-3.
In addition, the quantity of exhaust outlet machine barrel arranged is 4-5.
As another feature, heater makes the temperature of material in machine barrel remain on 100-150 DEG C.
In a further preferred embodiment, described twin-screw drying machine is also provided with vacuum pick-up system and extracts devolatilization gas for suction out from exhaust outlet.
Further, the feeding style of described feed system is feeding by force, and namely this feed system is feed system by force.
As mentioned above, because the viscosity painting slag is extremely strong, effective dewatering type is also rarely had at present.Treatment technology domestic is at present natural subsidence or pure mechanical dehydration mode substantially, compared with traditional disposal technology, has following technological merit:
1. viscosity waste residue deep dehydration ability: the deep dehydration that can realize viscous material, is reduced to less than 15% by moisture content;
2. highly effective and safe: heat utilization rate is high, adopts screw extruding, vacuum, heating three kinds of modes low in conjunction with dehydration energy;
3. intelligent automatic control: whole system can Automatic Control, minimized manual operation;
4. solution flexibly: can according to user's material and field condition design and layout, wide adaptability;
5. significantly improve field management quality: traditional approach is high owing to painting slag moisture content, smell weight, field management is filthy often, after adopting the solution of the present invention to realize deep dehydration, residue is drying solid, basic odorlessness, can greatly improve field management and transport, reduce the pollution risk to environment;
6. economic results in society: waste residue by loss on drying, realizes significantly decrement, for enterprise saves disposal costs, no matter subsequent treatment adopt landfill or burning, landfill land used or the discharge of decreasing pollution thing can both be saved.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of twin-screw drying machine of the present invention;
Fig. 2 is machine barrel viewgraph of cross-section;
Fig. 3 is the partial enlarged drawing of the twin-screw in machine barrel.
In the drawings: 1, feed system; 2, mair motor; 3, reductor; 4, vacuum pick-up system; 5, heater; 6, blanking head; 7, exhaust outlet; 8, screw rod; 9, machine barrel.
Detailed description of the invention
The present invention is in order to solve existing drying system Problems existing in the depth drying of viscous material, make full use of twin-screw and can realize self-cleaning feature to viscous material, adopt twin-screw extruder, vacuum draw and add the mode of thermal, realize depth drying and the significantly decrement treatment of viscous material, the moisture content of viscous material can be reduced to less than 15% even lower.
Twin-screw extruder principle uses in a large number in the extrusion molding of plastic industry, and we find, this principle also can be used for reference in the dry run of viscous material.For the feature that shaping plastic raw materials has some identical with viscosity waste material, such as, there is viscosity, volatile ingredient discharge etc. can be produced in extrusion.Therefore we have used for reference the twin (double) screw extruder used in plastic shaping, devise twin-screw drying machine of the present invention.
Traditional screw extruder is widely used in the extrusion molding of plastic industry, due in extrusion to plastic grain thermoplastic, have solvent and the monomer resin volatilization of trace, so extruder is all furnished with corresponding devolatilization system, our technical characterstic required by dry materials, a large amount of improvement and design is done to screw extruder, has made it the deep dehydration requirement meeting viscous material.
Main improvement and design have following some:
1. Design of Rotation: the major function of extruder is extrusion molding, and rotating speed is between 10-300, and our major function is devolatilization, needs enough time of staying, therefore design speed is 0-50, and working speed is between 10-20RPM;
2. screw design: the screw speed of plastic extruder is fast, requirement of strength is high, mainly extrude function, and our drying system mainly conveying function, in order to increase disposal ability, the pitch of screw rod lengthened, wherein the ratio of pitch and thread height is 2-3, or also screw channel is deepened, farthest to increase production capacity;
3. exhaust ports design: the devolatilization amount of plastic extruder is little, generally only establishes 1-2 exhaust outlet, and the devolatilization amount that our drying equipment needs is large, exhaust outlet is increased to 4-5;
4. temperature control design: plastic extruder is in order to ensure technological temperature and shaping, heating and cooling are equipped with to carry out accurate control temperature, and our drying equipment is in order at utmost improve efficiency of utilization, eliminate cooling system, increase isothermal holding simultaneously, make machine barrel inner drying material remain on 100-150 DEG C;
5. Die Design: the head of plastic extruder needs plastics cooling forming, due to the material that discharging is dry in our drying system, cancels Die Design, and directly open blanking, is designed to blanking head in other words;
6. charging system design: plastic extrusion machinery feed in raw material as grain plastic, freely can be fallen by funnel and enter main frame, and drying system is the viscous material that water content is higher, we design screw rod transmission and by force charging solve this problem.
The present invention will be described in detail below further combined with accompanying drawing.
See Fig. 1, twin-screw drying machine of the present invention can be divided into following components, i.e. feed system 1, drying system, transmission system and vacuum pick-up system 4, and wherein transmission system comprises mair motor 2 and reductor 3, with drive screw 8; Drying system comprises machine barrel 9, is provided with heater 5 outside machine barrel 9, and machine barrel 9 is also provided with exhaust outlet 7 every one section, holds twin-screw 8 in machine barrel.
Again see Fig. 2 and Fig. 3, although two screw rods 8 itself in machine barrel have squeezing action to the viscous material in machine barrel simultaneously, but preferably these two screw rods are engagements close to each other, to be more conducive to the extruding of twin-screw, and realize the automatic cleaning action of twin-screw, make viscous material can be dry smoothly.Should be appreciated that, although the cross section of the thread shown in Fig. 3 is trapezoidal, in actual applications, the cross section of thread is not limited thereto, the cross section of such as thread is taper, that is thread end face width is 0, or thread cross section is rectangle, and the trapezoid cross section thread shown in Fig. 3 is actually the change between these two kinds of extreme cases, namely when trapezoidal end face length is 0, thread cross section just becomes taper, and when trapezoidal end face is equal with sole length or suitable, just becomes rectangle.
Time dry, moisture waste residue enters feed system 1 along funnel, and feed system 1 is preferably feed system by force, such as, adopt screw rod charging by force.Waste residue enters main frame machine barrel entrance by the screw rod transmission of feed system 1.Meanwhile, under the effect of mair motor 2, drive two screw rods 8 by reductor 3, waste residue is sent to the heat drying district of machine barrel 9.Dry section is a closed chamber, adopt twin-screw extruder and heater 5 to heat, realize the depth drying of viscous material, extracted out the gas of devolatilization generation by vacuum pick-up system 4 from exhaust outlet 7, dried waste residue is exported by blanking head 6, obtains dried solid.The control of whole system can adopt PLC system centralized Control.
By reference to the accompanying drawings embodiments of the present invention are described in detail above, but the invention is not restricted to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, can also make a variety of changes under the prerequisite not departing from present inventive concept.
Claims (9)
1. a twin-screw drying machine, comprise feed system, transmission system and material drying system, it is characterized in that, described material drying system comprises machine barrel, feed system is arranged at one end of machine barrel, twin-screw is held in machine barrel, twin-screw is by transmission system drives, at the other end of machine barrel, blanking head is set for exporting dried material, machine barrel arranged outside heater heats the material in machine barrel, the gas that machine barrel is also provided with exhaust outlet produces for the material devolatilization of discharging in machine barrel every one section.
2. twin-screw drying machine as claimed in claim 1, is characterized in that, two screw rod engagements close to each other of described twin-screw.
3. twin-screw drying machine as claimed in claim 1, it is characterized in that, the rotating speed of described twin-screw is 0-50RPM.
4. twin-screw drying machine as claimed in claim 3, it is characterized in that, the rotating speed of described twin-screw is 10-20RPM.
5. twin-screw drying machine as claimed in claim 1, it is characterized in that, the pitch of screw rod and the ratio of thread height are 2-3.
6. twin-screw drying machine as claimed in claim 1, is characterized in that, the quantity of the exhaust outlet that machine barrel is arranged is 4-5.
7. twin-screw drying machine as claimed in claim 1, it is characterized in that, heater makes the temperature of material in machine barrel remain on 100-150 DEG C.
8. twin-screw drying machine as claimed in claim 1, is characterized in that, described twin-screw drying machine is also provided with vacuum pick-up system and extracts devolatilization gas for suction out from exhaust outlet.
9. twin-screw drying machine as claimed in claim 1, it is characterized in that, the feeding style of described feed system is feeding by force, and namely this feed system is feed system by force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511866.3A CN105066609A (en) | 2015-08-20 | 2015-08-20 | Double-screw drying machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510511866.3A CN105066609A (en) | 2015-08-20 | 2015-08-20 | Double-screw drying machine |
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| CN105066609A true CN105066609A (en) | 2015-11-18 |
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| CN201510511866.3A Pending CN105066609A (en) | 2015-08-20 | 2015-08-20 | Double-screw drying machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518965A (en) * | 2018-05-03 | 2018-09-11 | 青岛科技大学 | A kind of high-efficiency dehydration drying device for during waste plastics continuous cracking |
| CN109237918A (en) * | 2018-09-19 | 2019-01-18 | 江苏贝尔机械有限公司 | A kind of DDGS feed drying equipment and DDGS feed drying process |
| CN120551162A (en) * | 2025-07-30 | 2025-08-29 | 温兄控股集团股份有限公司 | A continuous processing method for extracting medicinal residues from traditional Chinese medicine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2141761Y (en) * | 1992-11-27 | 1993-09-08 | 王泽新 | Double-screw polyester melt extruder |
| CN2204231Y (en) * | 1994-02-01 | 1995-08-02 | 南京天环实业公司 | Combined reaction double-screw extruder |
| CN2925844Y (en) * | 2006-05-19 | 2007-07-25 | 林军 | Reinforced-fibre thermoplastic double-screw extruder |
| CN101138882A (en) * | 2007-06-16 | 2008-03-12 | 宝鸡秦川未来塑料机械有限责任公司 | Conical double screw extruder special for wood plastic composite material |
| CN102059017A (en) * | 2010-12-10 | 2011-05-18 | 北京化工大学 | Double screw dehydrating equipment capable of realizing dehydrating, drying and puffing processes |
| CN202727317U (en) * | 2012-06-25 | 2013-02-13 | 江苏宏益生化科技有限公司 | Degradable plastic double-screw extruder |
| CN204902480U (en) * | 2015-08-20 | 2015-12-23 | 无锡龙派机械科技有限公司 | Twin -screw desiccator |
-
2015
- 2015-08-20 CN CN201510511866.3A patent/CN105066609A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2141761Y (en) * | 1992-11-27 | 1993-09-08 | 王泽新 | Double-screw polyester melt extruder |
| CN2204231Y (en) * | 1994-02-01 | 1995-08-02 | 南京天环实业公司 | Combined reaction double-screw extruder |
| CN2925844Y (en) * | 2006-05-19 | 2007-07-25 | 林军 | Reinforced-fibre thermoplastic double-screw extruder |
| CN101138882A (en) * | 2007-06-16 | 2008-03-12 | 宝鸡秦川未来塑料机械有限责任公司 | Conical double screw extruder special for wood plastic composite material |
| CN102059017A (en) * | 2010-12-10 | 2011-05-18 | 北京化工大学 | Double screw dehydrating equipment capable of realizing dehydrating, drying and puffing processes |
| CN202727317U (en) * | 2012-06-25 | 2013-02-13 | 江苏宏益生化科技有限公司 | Degradable plastic double-screw extruder |
| CN204902480U (en) * | 2015-08-20 | 2015-12-23 | 无锡龙派机械科技有限公司 | Twin -screw desiccator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518965A (en) * | 2018-05-03 | 2018-09-11 | 青岛科技大学 | A kind of high-efficiency dehydration drying device for during waste plastics continuous cracking |
| CN108518965B (en) * | 2018-05-03 | 2024-01-12 | 青岛科技大学 | An efficient dehydration and drying device used in the continuous cracking process of waste plastics |
| CN109237918A (en) * | 2018-09-19 | 2019-01-18 | 江苏贝尔机械有限公司 | A kind of DDGS feed drying equipment and DDGS feed drying process |
| CN120551162A (en) * | 2025-07-30 | 2025-08-29 | 温兄控股集团股份有限公司 | A continuous processing method for extracting medicinal residues from traditional Chinese medicine |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151118 |
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| RJ01 | Rejection of invention patent application after publication |