CN108015099A - Kitchen waste preprocessing technology and system based on two-stage extrusion technique - Google Patents
Kitchen waste preprocessing technology and system based on two-stage extrusion technique Download PDFInfo
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- CN108015099A CN108015099A CN201810022780.8A CN201810022780A CN108015099A CN 108015099 A CN108015099 A CN 108015099A CN 201810022780 A CN201810022780 A CN 201810022780A CN 108015099 A CN108015099 A CN 108015099A
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- 238000001125 extrusion Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 239000010806 kitchen waste Substances 0.000 title claims abstract description 7
- 238000007781 pre-processing Methods 0.000 title claims abstract description 7
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 58
- 239000012535 impurity Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000013049 sediment Substances 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 7
- 238000011026 diafiltration Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 5
- 230000000717 retained effect Effects 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000005119 centrifugation Methods 0.000 claims 1
- 238000000703 high-speed centrifugation Methods 0.000 claims 1
- 230000003340 mental effect Effects 0.000 claims 1
- 239000005416 organic matter Substances 0.000 abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000251131 Sphyrna Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000010782 bulky waste Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006063 cullet Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 235000006694 eating habits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
Abstract
The present invention provides a kind of kitchen waste preprocessing technology and system based on two-stage extrusion technique, comprise the following steps：The first separating step of solid-liquid；First pressing steps；High-pressure extrusion separating step；Buffer pool sediment outflow step；Removal step；Screened stock material puies forward oily step；Impurities removal step.Beneficial effects of the present invention are：Compared with conventional pretreating process, the pretreating process based on two-stage high-pressure extrusion has the advantage that：（1）Primary extruding and the extruding of high-pressure extrusion two-stage are realized to rubbish, is conducive to provide the disposal ability of sliver；（2）Two-stage extruding Energy dissipation is reasonable, and ton garbage disposal energy consumption is greatly reduced；（3）Organic matter quality is good, and inorganic impurity content is low；（4）Organic matter loss is few, and obtained dry material moisture content is low.
Description
Technical field
The invention belongs to field of solid waste disposal, is pre-processed more particularly to a kind of kitchen garbage based on high-pressure extrusion technology
Technique and system.
Background technology
Since the eating habit in China and garbage classification, resource reclaim consciousness are weaker, impurity is more in kitchen garbage.Mix
There are substantial amounts of plastics, disposable packaging, tableware, or even some house refuses, building waste can also mix wherein.Meal at present
Kitchen rubbish needs to carry out separation of solid and liquid pretreatment before comprehensive utilization of resources, and its purpose is to greatest extent by kitchen
Inorganic impurity is removed and oil is carried after separation of solid and liquid, ensures that the organic matter in kitchen is separated into follow-up fermentation ring as far as possible
Section.
The kitchen garbage pretreatment core process of China's mainstream is by kitchen garbage by big part screening installation at present
Bulky Waste sieves away, carries out cracking and sorting by one or more levels cracking and sorting machine afterwards, subsequently passes through desanding again and removes
Heterocycle section, it is final that qualified slurry is made, so that follow-up boiling is carried needed for oil.There are problems with for this pretreating process
（1）Pretreatment line long flow path, complex procedures.Whole production line equipment is more, and the pipeline between equipment is increasingly complex, causes
Equipment fault point is more, Operation and Maintenance inconvenience, the problems such as taking up a large area.Also increase production line energy consumption and construction investment at the same time；
（2）Cracking and sorting equipment energy consumption is big, high failure rate.Due to having infiltrated substantial amounts of house refuse in kitchen garbage, and preceding
End processing links cannot be removed preferably, therefore the abrasion to grinder hammerhead is bigger, and strong impact also causes crusher
Main shaft service life reduction, its cracking hammer head and main shaft high frequency of replacement, seriously affect normal operation.Meanwhile broken is a kind of non-
The technique often to consume energy, causes the increase of processing cost；
（3）It is inorganic be mingled with it is more.The separation of organic matter is wrapped in the containers such as polybag, box and bottle mainly by crushing
Organic kitchen is separated under the fragmentation of hammer leaf.But during broken, glass, ceramics and brick and tile in kitchen etc.
Also it is broken, generates substantial amounts of block and particulate inorganic impurity, such as sand, cullet, broken ceramics, this is just to follow-up place
Reason link, which is brought, to be seriously affected, in order to remove these impurity, it has to add desanding device.
（4）Organic matter loss is larger.The acquisition of organic matter is but a part of organic during broken mainly by broken
Matter can be lost in；Big part sorting link before breaking can also lose part organic matter；For desanding and fiber-like impurity, increase
Screw extruder, removal effect is preferable, but organic matter largely loses.
The content of the invention
Based on the problems of above-mentioned prior art, the present invention provides a kind of kitchen garbage based on two-stage extrusion technique
Pretreating process and system, can realize all multiple targets such as flow is short, energy consumption is low, organic matter loss is few.
In order to solve the above technical problems, the present invention provides
A kind of kitchen garbage pretreatment system based on two-stage extrusion technique, including：Receiving hopper, screw conveyor one, percolate
Pond, centrifugal pump one, screw extruder, high-pressure extrusion machine, screw conveyor two, screw conveyor three, screw conveyor four, buffering
Pond, centrifugal pump two and de-burring machine；Wherein, receiving hopper bottom sets screw conveyor one；The discharge port and spiral shell of screw conveyor one
Rotation extruding machine inlet is connected, and the percolate outlet of screw conveyor one is connected with diafiltration liquid pool, is percolated outlet and the institute of liquid pool
One feeding mouth of centrifugal pump is stated to be connected；Screw extruder goes out half-dried garbage mouth and is connected with high-pressure extrusion machine feeding mouth, goes out wet refuse mouth
It is connected with four feeding mouth of screw conveyor；High-pressure extrusion machine goes out dry garbage mouth and is connected with two feeding mouth of screw conveyor, spiral transferring
The discharge port of machine two is sent to be connected with the feeding mouth of screw conveyor three；
Four feeding mouth of screw conveyor is connected with the wet refuse mouth that goes out of high-pressure extrusion machine, and screw conveyor four discharges with centrifugal pump one
Mouth is connected, and screw conveyor discharge port is connected with buffer pool feed inlet, and buffer pool discharge port is connected with two feed inlet of centrifugal pump；
De-burring machine feeding mouth is connected with centrifugal pump discharge port, and de-burring machine goes out fiber impurity material mouth and three feeding mouth phase of screw conveyor
Even, de-burring machine goes out screened stock material mouth and is connected with putting forward oily process in next step；Buffer pool bottom sets sand removing device.
Further, above-mentioned screw extruder uses the screw extruder of varying pitch, and extruding force is 1~5MPa.
Further, above-mentioned high-pressure extrusion machine is ram extrusion, and squeeze pressure is 16~20MPa, its wet refuse from
Circular hole on extrusion chamber is extruded, and 4~10mm of Circularhole diameter on extrusion chamber, dry rubbish is retained in extrusion chamber then by extrusion head
Release.
Further, above-mentioned de-burring machine is a kind of horizontal high-speed centrifugal rotation equipment, and scraping wings, rotation speed are carried on main shaft
1000~1500rpm is spent, cylinder is sieve, 4~8mm of sieve diameter；Its slurry is separated by centrifugal force from sieve aperture, fiber impurity
Discharged by scraping wings.
A kind of kitchen waste preprocessing technology based on two-stage extrusion technique, it is characterised in that include the following steps：
A. the first separating step of solid-liquid；
The solid-liquid just separate be by kitchen garbage by be arranged at the screw conveyor one of feed hopper bottom isolate just sub-material and
Percolate；
B. first pressing steps：
Primary extruding is rubbish will to be transported to screw extruder after first sub-material in a steps to carry out primary extruding；
C. high-pressure extrusion separating step；
The high-pressure extrusion separation refers to that high-pressure extrusion machine extrudes separation again to the primary extruding in b step, and separates wet refuse
With dry rubbish；
D. buffer pool sediment outflow step；
The buffer pool sediment outflow is that a steps are separated the wet refuse of percolate and step c by relying on helical-blade in screw conveyor
The agitation of piece, buffer pool is delivered in mixing, and in buffer pool sediment outflow；
E. removal step；
The removal of impurities is that mixed liquor after Step d is pumped to de-burring machine to isolate screened stock material and fiber impurity；
F. screened stock material puies forward oily step；The screened stock material carries oil for boiling；
H. impurities removal step；The impurities removal is by the dry rubbish of step c and the discharge of the impurity of step e.
Further, the above-mentioned screw extruder stated screw extruder and use varying pitch, extruding force is 1~5MPa.
Further, above-mentioned high-pressure extrusion machine extrudes for plunger type, and 16~20MPa is up to the squeeze pressure of rubbish, wet
Rubbish is from the circular hole extrusion on extrusion chamber, 4~10mm of Circularhole diameter on extrusion chamber, dry rubbish be retained in extrusion chamber then by
Extrusion head is released.
Further, above-mentioned de-burring machine is horizontal high-speed centrifugal rotation equipment, and scraping wings, rotary speed are carried on main shaft
1000-1500rpm, cylinder are sieve, sieve diameter 4-8mm；Slurry is separated by centrifugal force from sieve aperture, and fiber impurity is by pushing away
Flitch is discharged.
Further, percolate is separated in a steps in above-mentioned Step d to further include before screw conveyor is entered into infiltrating
Liquid pool step.
Beneficial effects of the present invention are：Compared with conventional pretreating process, the pretreating process based on two-stage extruding have with
Lower advantage：
（1）Primary extruding and the extruding of high-pressure extrusion two-stage are realized to rubbish, is conducive to provide the disposal ability of sliver；
（2）Two-stage extruding Energy dissipation is reasonable, and ton garbage disposal energy consumption is greatly reduced；
（3）Organic matter quality is good.Extrude the organic matter that separated principle determines that the wet refuse obtained by extruding is fluidised form, nothing
Machine impurity content is extremely low, therefore the quality of the organic ink far superior to obtained by cracking and sorting；
（4）Organic matter loss is few.The dry material moisture content obtained by second level high-pressure extrusion is low, and remnant organic matter content is low,
The organic matter of the overwhelming majority is transferred in wet refuse.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the kitchen waste preprocessing technology flow signal provided in an embodiment of the present invention based on two-stage extrusion technique
Figure；
In figure：01- kitchen garbages；10- receiving hoppers；20- screw conveyors one；21- is percolated liquid pool；22- centrifugal pumps one；30- spiral shells
Revolve extruder；31- high-pressure extrusion machines；32- screw conveyors two；33- screw conveyors three；34- impurity material；40- helical feeds
Machine four；50- buffer pools；60- centrifugal pumps two；70- de-burring machines；71- screened stock material.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing：
The technical solution in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment is only
It is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work, belong to protection scope of the present invention.
The embodiment of the present invention provides a kind of kitchen waste preprocessing technology based on two-stage extrusion technique, referring to Fig. 1, including
Following steps：
Kitchen garbage 01 is discharged into receiving hopper 10, and 10 bottom of receiving hopper sets screw conveyor 1 with holes, is leached part and is oozed
Rubbish is transported to screw extruder 30 after filtrate and carries out primary extruding, obtained half-dried rubbish again by high-pressure extrusion machine 31 into
Horizontal high voltage extrudes to obtain dry rubbish, and the wet refuse extruded twice and the percolate that leaches above are in screw conveyor 4 40
By the agitation of helical blade, buffer pool 50 is delivered in mixing, it is miscellaneous to remove masses of fibres to be pumped to de-burring machine 70 afterwards
Matter, finally obtaining qualified screened stock material, oily use, the dry rubbish extruded and the bulk that de-burring machine 70 removes are fine so that boiling carries
Impurity is tieed up by screw conveyor 2 32 and the outer row of the conveying of screw conveyor 3 33.
Screw extruder 30 realizes extruding by the way of varying pitch, relatively low to the extruding force of rubbish, about 1-5MPa, can be with
Primary extrusion dehydration is carried out to rubbish；
High-pressure extrusion machine 31 is extruded using plunger type, and 16~20MPa is up to the squeeze pressure of rubbish, rubbish can be carried out strong
Strong separating dry space from moist space, wet refuse is entered from the circular hole extrusion on extrusion chamber by screw conveyor 4 40 to be sent to buffer pool 50, is done
Rubbish is retained in extrusion chamber and is then released by extrusion head；Dry rubbish is conveyed through screw conveyor 2 32, screw conveyor 3 33
Outer row.
De-burring machine 70 is a kind of horizontal high-speed centrifugal rotation equipment, carries scraping wings on main shaft, rotary speed 1000~
1500rpm, cylinder are sieve, 4~8mm of sieve diameter.Slurry is separated by centrifugal force from sieve aperture, and fiber impurity is by scraping wings
Discharge, impurity material convey outer row by screw conveyor 3 33.
As shown in Figure 1, the embodiment of the present invention also provides a kind of kitchen garbage pretreatment system based on two-stage extrusion technique, it is used for
Realize above-mentioned technique, including：
Receiving hopper 10, screw conveyor 1, diafiltration liquid pool 21, centrifugal pump 1, screw extruder 30, high-pressure extrusion machine 31,
Screw conveyor 2 32, screw conveyor 3 33, screw conveyor 4 40, buffer pool 50, centrifugal pump 60 and de-burring machine 70；
Wherein, 10 bottom of receiving hopper sets screw conveyor one（20）, screw conveyor housing bottom is provided with the circular hole of φ 5mm；
One 20 discharge port of screw conveyor is connected with 30 feed inlet of screw extruder, and one 20 percolate of screw conveyor is exported with oozing
Reservoir 21 is connected, and the outlet of diafiltration liquid pool is connected with one 22 feeding mouth of centrifugal pump；
Screw extruder 30 goes out half-dried garbage mouth and is connected with 31 feeding mouth of high-pressure extrusion machine, goes out wet refuse mouth and screw conveyor 40
Feeding mouth is connected；
High-pressure extrusion machine 31 goes out dry garbage mouth and is connected with 2 32 feeding mouth of screw conveyor, 2 32 discharge port of screw conveyor and spiral shell
Rotation 3 33 feeding mouth of conveyer is connected；
4 40 feeding mouth of screw conveyor goes out wet refuse mouth with high-pressure extrusion machine 31 and is connected, and is connected with one 22 discharge port of centrifugal pump,
4 40 discharge port of screw conveyor is connected with 50 feed inlet of buffer pool, 50 discharge port of buffer pool and 2 60 feed inlet phase of centrifugal pump
Even；
70 feeding mouth of de-burring machine is connected with 2 60 discharge port of centrifugal pump, and de-burring machine 70 goes out fiber impurity material mouth and screw conveyor three
33 feeding mouths are connected, and de-burring machine 70 goes out screened stock material mouth and is connected with putting forward oily process in next step.
50 bottom of buffer pool sets sand removing device, regular sediment outflow；
Referring to the system of Fig. 1, which includes：Kitchen garbage is discharged into receiving hopper, and receiving hopper bottom sets spiral transferring with holes
Machine is sent, rubbish is transported to screw extruder after bleeding part percolate carries out primary extruding, and obtained half-dried rubbish passes through again
High-pressure extrusion machine carries out high-pressure extrusion and obtains dry rubbish, and the wet refuse extruded twice is with the percolate that leaches above spiral
The agitation of helical blade is relied in conveyer, buffer pool is delivered in mixing, is pumped to de-burring machine afterwards to remove bulk fibre
Tie up impurity, finally obtain the screened stock material of qualification so that boiling carries oily use, the bulk that the dry rubbish extruded and de-burring machine remove
Fiber impurity conveys outer row by screw conveyor.
By above-mentioned processing, realize that primary extruding and high-pressure extrusion two-stage are extruded to rubbish, be conducive to provide sliver
Disposal ability；Two-stage extruding Energy dissipation is reasonable, and ton garbage disposal energy consumption is greatly reduced；Extrude separated principle and determine and pass through
The organic matter that obtained wet refuse is fluidised form is extruded, inorganic impurity content is extremely low, therefore is far superior to obtained by cracking and sorting
Organic ink quality；The dry material moisture content obtained by second level high-pressure extrusion is low, and organic matter loss is few.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, it is any
Those familiar with the art is in the technical scope of present disclosure, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the protection domain of claims as
It is accurate.
Claims (9)
- A kind of 1. kitchen garbage pretreatment system based on two-stage extrusion technique, it is characterised in that including：Receiving hopper (10), screw conveyor one (20), diafiltration liquid pool (21), centrifugal pump one (22), screw extruder (30), high pressure Extruder (31), screw conveyor two (32), screw conveyor three (33), screw conveyor four (40), buffer pool (50), centrifugation Pump two (60) and de-burring machine (70)；Wherein,Receiving hopper (10) bottom sets screw conveyor one (20)；The discharge port of the screw conveyor one (20) is connected with screw extruder (30) feed inlet,The percolate outlet of the screw conveyor one (20) is connected with diafiltration liquid pool (21), the outlet of the diafiltration liquid pool and institute Centrifugal pump (22) feeding mouth is stated to be connected；The screw extruder (30) goes out half-dried garbage mouth and is connected with high-pressure extrusion machine (31) feeding mouth, go out wet refuse mouth with it is spiral Conveyer four (40) feeding mouth is connected；The high-pressure extrusion machine (31) goes out dry garbage mouth and is connected with screw conveyor two (32) feeding mouth, the screw conveyor two (32) discharge port is connected with screw conveyor three (33) and feeding mouth；Described four (40) feeding mouth of screw conveyor is connected with the wet refuse mouth that goes out of high-pressure extrusion machine (31), the screw conveyor Four (40) feeding mouths are connected with described one (22) discharge port of centrifugal pump, described four (40) discharge port of screw conveyor and the buffering Pond (50) feed inlet is connected, and buffer pool (50) discharge port is connected with centrifugal pump two (60) feed inlet；De-burring machine (70) feeding mouth is connected with centrifugal pump (60) discharge port, de-burring machine (70) go out fiber impurity material mouth with it is spiral Conveyer three (33) feeding mouth is connected, and de-burring machine (70) goes out screened stock material mouth and is connected with putting forward oily process in next step；Buffer pool (50) bottom sets sand removing device.
- 2. kitchen garbage pretreatment system as claimed in claim 1, it is characterised in that the screw extruder uses varying pitch Screw extruder, extruding force is 1~5MPa.
- 3. kitchen garbage pretreatment system as claimed in claim 1 or 2, it is characterised in that the high-pressure extrusion machine is plunger Formula extruder, squeeze pressure are 16~20MPa, its wet refuse is extruded from the circular hole on extrusion chamber, the Circularhole diameter 4 on extrusion chamber ~10mm, dry rubbish is retained in extrusion chamber then to be released by extrusion head.
- 4. kitchen garbage pretreatment system as claimed in claim 1 or 2, it is characterised in that the de-burring machine is a kind of horizontal High speed centrifugation slewing, carries scraping wings, 1000~1500rpm of rotary speed on main shaft, and cylinder is sieve, sieve diameter 4 ~8mm；Its slurry is separated by centrifugal force from sieve aperture, and fiber impurity is discharged by scraping wings.
- 5. a kind of kitchen waste preprocessing technology based on two-stage extrusion technique, it is characterised in that include the following steps：A. the first separating step of solid-liquid；The solid-liquid just separate be by kitchen garbage by be arranged at the screw conveyor one of feed hopper bottom isolate just sub-material and Percolate；B. first pressing steps：Primary extruding is rubbish will to be transported to screw extruder after first sub-material in a steps to carry out primary extruding；C. high-pressure extrusion separating step；The high-pressure extrusion separation refers to that high-pressure extrusion machine extrudes separation again to the primary extruding in b step, and separates wet refuse With dry rubbish；D. buffer pool sediment outflow step；The buffer pool sediment outflow is that a steps are separated the wet refuse of percolate and step c by relying on helical-blade in screw conveyor The agitation of piece, buffer pool is delivered in mixing, and in buffer pool sediment outflow；E. removal step；The removal of impurities is that mixed liquor after Step d is pumped to de-burring machine to isolate screened stock material and fiber impurity；F. screened stock material puies forward oily step；The screened stock material carries oil for boiling；H. impurities removal step；The impurities removal is by the dry rubbish of step c and the discharge of the impurity of step e.
- 6. pretreating process as claimed in claim 1, it is characterised in that the screw extruder is squeezed using the spiral of varying pitch Press, extruding force are 1~5MPa.
- 7. pretreating process as claimed in claim 1, it is characterised in that the high-pressure extrusion machine extrudes for plunger type, to rubbish The squeeze pressure of rubbish is up to 16~20MPa, and wet refuse is extruded from the circular hole on extrusion chamber, and the Circularhole diameter 4 on extrusion chamber~ 10mm, dry rubbish is retained in extrusion chamber then to be released by extrusion head.
- 8. pretreating process as claimed in claim 1, it is characterised in that the de-burring machine sets for horizontal high-speed centrifugal rotation It is standby, carry scraping wings, rotary speed 1000-1500rpm on main shaft, cylinder is sieve, sieve diameter 4-8mm；Slurry rely on from Mental and physical efforts are separated from sieve aperture, and fiber impurity is discharged by scraping wings.
- 9. pretreating process as claimed in claim 1, it is characterised in that a steps in the Step d separate percolate into Further included before entering screw conveyor into sepage pond step.
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| CN201810022780.8A CN108015099A (en) | 2018-01-10 | 2018-01-10 | Kitchen waste preprocessing technology and system based on two-stage extrusion technique |
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| CN201810022780.8A CN108015099A (en) | 2018-01-10 | 2018-01-10 | Kitchen waste preprocessing technology and system based on two-stage extrusion technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057038A1 (en) * | 2018-09-17 | 2020-03-26 | 北京环境工程技术有限公司 | Extrusion separation and purification device |
| CN115401057A (en) * | 2022-08-22 | 2022-11-29 | 吉林省佳园再生科技有限公司 | Kitchen waste treatment device |
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| WO2020057038A1 (en) * | 2018-09-17 | 2020-03-26 | 北京环境工程技术有限公司 | Extrusion separation and purification device |
| CN115401057A (en) * | 2022-08-22 | 2022-11-29 | 吉林省佳园再生科技有限公司 | Kitchen waste treatment device |
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