CN105710035A - Two-stage segmentation type variable-frequency sieving device for domestic wastes and sieving method - Google Patents
Two-stage segmentation type variable-frequency sieving device for domestic wastes and sieving method Download PDFInfo
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- CN105710035A CN105710035A CN201610156628.XA CN201610156628A CN105710035A CN 105710035 A CN105710035 A CN 105710035A CN 201610156628 A CN201610156628 A CN 201610156628A CN 105710035 A CN105710035 A CN 105710035A
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- rotary screen
- stage
- sieve
- gravity
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/08—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration the load-carrying surface being formed by a concave or tubular belt, e.g. a belt forming a trough
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/20—Means incorporated in, or attached to, framework or housings for guiding load-carriers, traction elements or loads supported on moving surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/10—Arrangements of rollers
- B65G39/12—Arrangements of rollers mounted on framework
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a two-stage segmentation type variable-frequency sieving device for domestic wastes. The two-stage segmentation type variable-frequency sieving device has the structure that an undersized compost outlet of a first-stage drum screen is formed corresponding to the feeding end of a material conveying machine; the discharge end of the material conveying machine is arranged above a gravity-resistance sorting material conveying machine; the upper end of the gravity-resistance sorting material conveying machine is arranged corresponding to the feeding hole of a second-stage drum screen; the lower end of the gravity-resistance sorting material conveying machine is arranged corresponding to the feeding hole of a coarse material collection tank; and an included angle between a material conveying belt of the gravity-resistance sorting material conveying machine and the ground plane is 35-45 degrees. The invention also discloses a method utilizing the device to sieve the domestic wastes.
Description
Technical field
The invention belongs to solid waste resource recovery field, more particularly to a kind of for house refuse
Two-stage stagewise frequency conversion screening plant.
The invention still further relates to utilize above-mentioned two-stage stagewise frequency conversion screening plant to carry out house refuse screening
Method.
Background technology
In recent years, along with the fast development of urbanization, the annual production of China's domestic waste is close to 1.5
Hundred million tons, China there are about the city of more than 65% and has been absorbed in the predicament that house refuse is encircled a city, due to China city
City garbage water content is high, composition is complicated, particle size differences is big, often contains thick rubbish and not
Compost compound matter.Traditional refuse classification relies primarily on rubbish source classification and manual sorting, the party
Method depends on the raising of social environment consciousness, and labor intensity is big, and production environment is severe, separating effect
Undesirable.Along with the progress of mechanization, house refuse mechanical sorting is increasingly subject to pay attention to.At present, rubbish
Rubbish mechanical sorting mode mainly has cylinder screening, pneumatic separating, waterpower sorting, metal magnetic separation etc..
Screening efficiency and screening effect are the important parameters of house refuse mechanical sorting, the product after screening
House refuse aerobic compost can be carried out and prepare fertile soil, make fertilizer, be one effectively life rubbish
Rubbish resource recycling approach.Existing screening plant often exists screening efficiency cannot with screening speed
The problem taken into account, if improving rotary screen aperture and inclination angle, then screening speed significantly improves, but screening
DeGrain, siftage still suffers from a large amount of difficult degradation big particle diameter heavy substance and exists；If reducing rolling
Shaft screen aperture and inclination angle, then screening speed is decreased obviously, the overall domestic rubbish disposal amount of impact, and then
Have influence on treatment plant's economic benefit.
Summary of the invention
It is an object of the invention to provide a kind of two-stage stagewise frequency conversion screening for house refuse screening
Device.
It is yet another object of the invention to provide one utilizes above-mentioned two-stage stagewise frequency conversion screening plant to enter
The screening technique of row house refuse.
For achieving the above object, the two-stage stagewise frequency conversion screening plant that the present invention provides, structure is:
The siftage outlet of one-level rotary screen is corresponding to the feed end of conveyer, and the discharge end of conveyer is put
In the top of gravity-resistance sorting conveyer, the upper end of gravity-resistance sorting conveyer is corresponding to two grades
The charging aperture of rotary screen, the lower end of gravity-resistance sorting conveyer is corresponding to the charging of coarse fodder collecting box
Mouthful, the conveying belt of gravity-resistance sorting conveyer is 35-45 ° with ground level angle.
In described two-stage stagewise frequency conversion screening plant, one-level rotary screen is inclining of rotating speed 5-7r/min
Angle rotary screen, the cylinder major axis of one-level rotary screen and ground level inclination angle are 5-7 °.
In described two-stage stagewise frequency conversion screening plant, the sieve diameter of one-level rotary screen is 4-7 li
Rice.
In described two-stage stagewise frequency conversion screening plant, two stage cylinder sieve is for rotating speed 10-15r/min's
Inclination angle rotary screen, the cylinder major axis of two stage cylinder sieve is 2-4 ° with ground level inclination angle.
In described two-stage stagewise frequency conversion screening plant, the sieve diameter of two stage cylinder sieve is 1-2 li
Rice.
The two-stage stagewise frequency conversion screening plant that utilizes that the present invention provides carries out the side of house refuse screening
Method:
House refuse sends into one-level rotary screen, defeated by conveyer through the siftage of one-level rotary screen sieve opening
Deliver to gravity-resistance sorting conveyer, after removing big particle diameter difficult degradation heavy substance coarse fodder, by one-level cylinder
Two stage cylinder sieve sent into by light materials fines in sieve siftage, two stage cylinder sieve sieve aperture sift out small particle
Material is discharged by two stage cylinder sieve siftage outlet；
The oversize of one-level rotary screen and two stage cylinder sieve is by one-level rotary screen oversize outlet and two
Level rotary screen oversize outlet merging treatment.
In described method, the big particle diameter difficult degradation heavy substance that gravity-resistance sorting conveyer sub-elects is thick
Material enters coarse fodder collecting box, reenters one-level rotary screen and again sorts.
Use assembly of the invention to process city, villages and small towns house refuse, can divide improving house refuse
While selecting speed, improve overall screen component efficiency, and significantly shorten the system of house refuse exquisiteness fertilizer
The standby time；Can be while taking into account house refuse sieving time through two grades of frequency conversion screenings, it is ensured that its
Siftage screening quality reaches exquisite organic standard humous, and does not interferes with two grades of frequency conversion screenings
The fertility effect of fertilizer prepared by rear oversize aerobe compost；Processing procedure is produced without dust
Raw, have broad application prospects.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the structural representation of conveyer in apparatus of the present invention.
Fig. 3 is the top view of Fig. 2.
Description of symbols in accompanying drawing:
1 one-level rotary screen sieve opening；2 one-level rotary screens；3 one-level rotary screen oversize outlets；4 one-level rollings
Shaft screen siftage exports；5 conveyers；The heavy coarse fodder of 6 one-level rotary screen siftage；7 coarse fodders are collected
Case；8 gravity-resistance sorting conveyer；The lightweight fines of 9 one-level rotary screen siftage；10 two stage cylinders
Sieve；11 two stage cylinder sieve sieve apertures；12 two stage cylinder sieve oversize outlets；13 two stage cylinder sieve siftage
Outlet；14 fertile soil；21 dust-proof housings；22 flanges；23 hourglass shape rollers；24 springs；25 belts
Support shaft；26 feed belts；27 belt support shafts fix Os Draconis；28 slag tap scraper plate；29 solid waste
Thing；30-dust removal brush.
Detailed description of the invention
The present invention is used for house refuse (solid waste) two-stage stagewise frequency conversion screening plant, mainly
Structure is:
One-level rotary screen, is gone out by rotary screen screen cloth, rotary screen shell, oversize discharging opening, siftage
Material mouth, power transmission shaft and power motor composition；The sieve diameter of screen cloth 4-7 centimetre, rotating speed 5-7r/min,
Cylinder major axis and ground level inclination angle are 5-7 °.
One-level rotary screen rotating speed 5-7r/min, cylinder major axis and ground level inclination angle are 5-7 °, it is ensured that
Life solid waste rapidly and efficiently separates, and processes life solid waste 100-150 ton, screening day
Efficiency reaches 30-45%, and (owing to living every day, solid waste constituent differs greatly, so affecting
Its screening efficiency fluctuation range is bigger.
The siftage discharging opening of one-level rotary screen is corresponding to one end of conveyer.
Conveyer is dustless conveyer, by closed guard, dedusting scraper plate, internal conveying belt, belt
Transmitting roller bearing, power motor composition, steel shell is coated on outside conveyer belt, and housing upper is detachable,
Connected by method hurdle；Dedusting scraper plate is positioned at bottom and conveying belt lower end, width and the closed guard of housing
Width is identical, is provided with slider roller bottom dedusting scraper plate, can extract out from housing side, will be from inside
The life solid waste in small, broken bits fallen down on conveying belt is struck off.
The other end of conveyer is corresponding to gravity-resistance sorting conveyer, gravity-resistance sorting conveyer
Conveying belt and ground level angle be 35-45 °, conveying belt is provided with resistance rib, resistance rib length
Identical with conveying belt width, resistance rib height is 1-2 centimetre, and width is 1-2 centimetre, two resistances
It is spaced apart 8-12 centimetre between power rib；The angle that conveyer and ground are formed can rely on the effect of gravity
Big particle diameter heavy coarse fodder is sorted out, falls into the siftage heavy coarse fodder collecting box of one-level rotary screen,
Periodically being re-poured into one-level rotary screen by staff, rescreening takes other 1-2 time afterwards
Mode processes；Conveying belt resistance rib can increase conveying belt resistance, improves two stage cylinder sieve organic
Lightweight fines enters cylinder amount；
Two stage cylinder sieves, rotary screen screen cloth, rotary screen shell, oversize discharging opening, siftage go out
Material mouth, power transmission shaft and power motor composition.
Sieve diameter 1-2 centimetre of two stage cylinder sieve, cylinder major axis and ground level inclination angle are 2-4 °.This
The two stage cylinder sieve of invention can effectively extend life solid waste time of staying in cylinder, cylinder
Sieve sieve diameter 1-2 centimetre can significantly reduce siftage organic matter fraction particle diameter, it is ensured that siftage is
Life solid waste aerobic compost processes disposal efficiency and component exquisiteness effect.
The rotating speed of two stage cylinder sieve is 10-15r/min, it is ensured that life solid waste is rapidly and efficiently
Separating, process life solid waste 100-150 ton day, screening efficiency reaches 10-15%.Two grades of rollings
The rotating speed of shaft screen is higher, can effectively increase sieve aperture in screening process and contact frequency with life solid waste
Rate, owing to sieve aperture is less, employing higher rotation speed can be in the limited life solid waste time of staying
In efficient sieve small particle organic matter fraction therein.Cylinder major axis and ground angle are 2-4 °, can
To prevent life, solid waste component is too fast in screening process passes through cylinder, it is ensured that screening efficiency with
Organic fertile soil yield.
Advantage of the present invention is as follows:
(1) invention significantly improves life solid waste nominal particle size organic matter fertile soil screening
Efficiency, processes the cycle short, processes life solid waste 100-150 ton day, can produce organic humic
Matter 5-7.5 ton, can become exquisite fertilizer through of short duration 1-2 days aerobic processes, compared with common screening
Substantially reduce composting treatment process, reduce the floor space needed for compost, improve organic humic autochthonal
Produce efficiency.
(2) present invention is few with flue dust generation amount in transmitting procedure at life solid waste screening process,
The totally-enclosed process of transmitting procedure, by gravity-resistance sorting conveyer can while conveying material,
By big for the heavy of difficult degradation particle diameter rubbish (such as structural glass slag, battery, bottle, crushed stone etc.) point
Elect, effectively reduce impurity content in fertilizer, improve Fertilizer application safety.
With embodiment, the present invention is illustrated in greater detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, be that the two-stage stagewise frequency conversion screening plant for house refuse of the present invention shows
Be intended to, include four major parts altogether: one-level rotary screen, dustless transmission, gravity-resistance sorting conveyer,
Prepared by two grades of frequency rotary screens, humus.
Specifically, the two-stage stagewise frequency conversion screening plant of the present invention is:
The one-level rotary screen siftage outlet 4 of one-level rotary screen 2 corresponds to the feed end of conveyer 5,
The discharge end of conveyer 5 is placed in the top of gravity-resistance sorting conveyer 8, and gravity-resistance sorting is defeated
The upper end of material machine 8 sorts conveyer 8 corresponding to the charging aperture of two stage cylinder sieve 10, gravity-resistance
Lower end is corresponding to the charging aperture of coarse fodder collecting box 7.
In actual applications, house refuse sends into one-level rotary screen 2 to said apparatus, through one-level cylinder
The siftage of sieve sieve aperture 1 is delivered to gravity-resistance sorting conveyer 8 by conveyer 5, removes bigger grain
After footpath difficult degradation heavy substance coarse fodder 6, the light materials fines 9 in one-level rotary screen siftage is sent into two
Level rotary screen 10, is sifted out small particle material (such as organic fertile soil 14) by two stage cylinder sieve sieve aperture 11
By two stage cylinder sieve siftage outlet 13 discharge.Gravity-resistance sorting conveyer 8 sub-elects relatively
Big particle diameter difficult degradation heavy substance coarse fodder enters coarse fodder collecting box 7, reenters one-level rotary screen 2 and divides
After choosing once, the oversize of one-level rotary screen 2 and two stage cylinder sieve 10 is sieved by one-level rotary screen
Thing outlet 3 and two stage cylinder sieve oversize outlet 12 merging carry out other and process.
In assembly of the invention, one-level rotary screen 2 is low speed high inclination-angle rotary screen, a concrete reality
Execute in example, a length of 9 meters of one-level rotary screen 2, a diameter of 4 meters, one-level rotary screen sieve opening 1
Diameter 5 centimetres, rotating speed 6r/min, the major axis of the cylinder of one-level rotary screen and ground level inclination angle are 6 °.
Two stage cylinder sieve 10 is high speed small inclination rotary screen, and two stage cylinder sieves a length of 14 meters, a diameter of 4
Rice, sieve diameter 1.5 centimetres, rotating speed 15r/min, cylinder major axis and ground level inclination angle are 3.
Referring to Fig. 2 and Fig. 3, the conveyer 5 of the present invention is made up of the dust-proof housing of some joints 21, anti-
The top of dirt housing 21 is the top cover that can freely dismantle, between the bottom of this top cover and dust-proof housing 21
Being bolted by flange 22, during use, dust-proof housing 21 is totally-enclosed shape.
Feed belt 26 is through often saving in dust-proof housing 21, in the internal position, both sides of dust-proof housing 21
Be provided with some belt support shafts 25 in the lower section of feed belt 26, belt support shaft 25 is symmetrical and hangs down
Straight in feed belt 26.One end of belt support shaft 25 connects dust-proof housing 21, belt support shaft 25
The other end be connected to belt support shaft and fix Os Draconis 27, belt support shaft 25 connects dust-proof housing 21
The height of one end connects belt support shaft higher than belt support shaft 25 and fixes one end of Os Draconis 27, and it is right to make
The two root bark band support shafts 25 claimed form V-type.The midpoint of roller bearing 25 is transmitted at two adjacent belts
Position is provided with eccentric abrasion prevention abreast and fixes jump ring, and it is also vertical that eccentric abrasion prevention fixes jump ring with feed belt 26
Straight setting.Eccentric abrasion prevention is fixed jump ring and is made up of with hourglass shape roller 23 spring 24, the one of spring 24
End is fixed on dust-proof housing 21, and the other end of spring 24 is connected with hourglass shape roller 23, spring
24 are 6-10 ° with the lift angle of hourglass shape roller 23.In a specific embodiment, spring 24 is permissible
Being provided with an outer shell, this outer shell is connected on dust-proof housing 21, spring 24 is placed in spring overcoat
In shell, being connected with hourglass shape roller 23, feed belt 26 is made for abrasive rubber, and rubber edges adds
Thick triangular in shape prominent, narrow point middle with hourglass shape roller 32 agrees with.The bottom of dust-proof housing 21 sets
Having scraper plate 28 of slagging tap, width is identical with the width of dust-proof housing 21, is provided with bottom scraper plate 28 of slagging tap
Slider roller, can extract out from the side of dust-proof housing 21, and the medial surface of dust-proof housing 21 is provided with dedusting
Brush 30, the life solid waste in small, broken bits that the solid waste 29 on feed belt 26 is fallen down
Thing strikes off.
The present invention can make organic fertile soil generation amount be highly improved, more common screening installation product system
Standby fertile soil yield increases 45-55%, while ensureing product quality, at life solid waste day
Reason amount improves 33%, and the notable shortening life solid waste processing technological flow time, once at charging
Reason duration 2 hours, runs continuously and can process life solid waste 150 tons day, generate organic humic
7.5 tons of soil.Apparatus of the present invention energy consumption is less, mobile convenient with installation and debugging.
Claims (8)
1., for a two-stage stagewise frequency conversion screening plant for house refuse, structure is:
The siftage outlet of one-level rotary screen is corresponding to the feed end of conveyer, and the discharge end of conveyer is put
In the top of gravity-resistance sorting conveyer, the upper end of gravity-resistance sorting conveyer is corresponding to two grades
The charging aperture of rotary screen, the lower end of gravity-resistance sorting conveyer is corresponding to the charging of coarse fodder collecting box
Mouthful, the conveying belt of gravity-resistance sorting conveyer is 35-45 ° with ground level angle.
Two-stage stagewise frequency conversion screening plant the most according to claim 1, wherein, one-level is rolled
Shaft screen is the inclination angle rotary screen of rotating speed 5-7r/min, the cylinder major axis of one-level rotary screen and ground level inclination angle
For 5-7 °.
Two-stage stagewise frequency conversion screening plant the most according to claim 1 and 2, wherein, one
The sieve diameter of level rotary screen is 4-7 centimetre.
Two-stage stagewise frequency conversion screening plant the most according to claim 1, wherein, two grades of rollings
Shaft screen is the inclination angle rotary screen of rotating speed 10-15r/min, and the cylinder major axis of two stage cylinder sieve inclines with ground level
Angle is 2-4 °.
5. according to the two-stage stagewise frequency conversion screening plant described in claim 1 or 4, wherein, two
The sieve diameter of level rotary screen is 1-2 centimetre.
Two-stage stagewise frequency conversion screening plant the most according to claim 1, wherein, gravity-resistance
The conveying belt of power sorting conveyer is provided with resistance rib, resistance rib length and conveying belt width phase
With.
7. utilize two-stage stagewise frequency conversion screening plant described in claim 1 to carry out house refuse screening
Method:
House refuse sends into one-level rotary screen, defeated by conveyer through the siftage of one-level rotary screen sieve opening
Deliver to gravity-resistance sorting conveyer, after removing coarse fodder, the fines in one-level rotary screen siftage is sent
Enter two stage cylinder sieve, two stage cylinder sieve sieve aperture sift out small particle material and sieve siftage by two stage cylinder
Outlet is discharged；The oversize of one-level rotary screen and two stage cylinder sieve is exported by one-level rotary screen oversize
With two stage cylinder sieve oversize outlet merging treatment.
Method the most according to claim 7, wherein, gravity-resistance sorting conveyer sub-elects
Coarse fodder enter coarse fodder collecting box, reenter one-level rotary screen and again sort.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156628.XA CN105710035A (en) | 2016-03-18 | 2016-03-18 | Two-stage segmentation type variable-frequency sieving device for domestic wastes and sieving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156628.XA CN105710035A (en) | 2016-03-18 | 2016-03-18 | Two-stage segmentation type variable-frequency sieving device for domestic wastes and sieving method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105710035A true CN105710035A (en) | 2016-06-29 |
Family
ID=56159070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610156628.XA Pending CN105710035A (en) | 2016-03-18 | 2016-03-18 | Two-stage segmentation type variable-frequency sieving device for domestic wastes and sieving method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105710035A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809142A (en) * | 2019-03-15 | 2019-05-28 | 太原科技大学 | A kind of anti-blocking explosion-proof pipe device for circular pipe belt type conveyer |
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| KR20030016439A (en) * | 2001-08-16 | 2003-03-03 | 주식회사 청석공영 | dry-typed sorting apparatus for construction wastes using a air blower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109809142A (en) * | 2019-03-15 | 2019-05-28 | 太原科技大学 | A kind of anti-blocking explosion-proof pipe device for circular pipe belt type conveyer |
| CN109809142B (en) * | 2019-03-15 | 2023-11-07 | 太原科技大学 | Anti-blocking and anti-explosion pipe device for circular pipe belt conveyor |
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Application publication date: 20160629 |