CN110064638A - One kind being used for Masterbatch dust-extraction unit - Google Patents
One kind being used for Masterbatch dust-extraction unit Download PDFInfo
- Publication number
- CN110064638A CN110064638A CN201910264655.2A CN201910264655A CN110064638A CN 110064638 A CN110064638 A CN 110064638A CN 201910264655 A CN201910264655 A CN 201910264655A CN 110064638 A CN110064638 A CN 110064638A
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- CN
- China
- Prior art keywords
- dust
- cleaning case
- drying box
- dust cleaning
- masterbatch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
- F26B23/06—Heating arrangements using electric heating resistance heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Biomedical Technology (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses one kind to be used for Masterbatch dust-extraction unit, including drying box and dust cleaning case, it is attached between the drying box and dust cleaning case by exhaust column, the drying box and dust cleaning case are closed cylindrical-shaped structure, the side wall of the drying box is double-layer structure, and heater strip is internally provided in the double-layer structure of drying box, the inside of the drying box is additionally provided with agitating device and hot-blast conveying appliance, the inside of the dust cleaning case is fixedly installed pulsed dust-removing device, and is filled with aqueous solution in dust cleaning case cavity bottom；Air cleaning unit is provided at the top of dust cleaning case; by the drying of Masterbatch and dedusting step-by-step processing; so that the drying of Masterbatch is more thorough; the dedusting of Masterbatch is more efficient; the gas after dedusting is further processed by setting air cleaning unit; the gas that dust cleaning case is discharged is purer, the effective protection respiratory health of operator.
Description
Technical field
It is specifically a kind of to be used for Masterbatch dust-extraction unit the present invention relates to a kind of Masterbatch processing technique field.
Background technique
Masterbatch is by a high proportion of pigment or additive and thermoplastic resin, through coloring plastic made of fine dispersion
Agent, selected by resin to colorant have good wet and peptizaiton, and with by coloured material have good phase
Capacitive.
Masterbatch needs that Masterbatch is dried during processing at present, and Masterbatch is in dry process
In, the pigment powder on Masterbatch can be flowed into air, and certain pollution, operator's inhalation of dust meeting can be caused to air
The diseases such as respiratory tract infection are caused, existing master-batch drying device cannot clear up these powder well, to just reduce
The practicability of master-batch drying device affects the processing quality of Masterbatch.
Summary of the invention
The purpose of the present invention is to provide one kind to be used for Masterbatch dust-extraction unit, to Masterbatch progress rapid draing and effectively
The health of operator is protected in dedusting, improves the processing quality of Masterbatch, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme:
One kind being used for Masterbatch dust-extraction unit, including drying box and dust cleaning case, passes through between the drying box and dust cleaning case
Exhaust column is attached, and the drying box and dust cleaning case are closed cylindrical-shaped structure, and the side wall of the drying box is bilayer
Structure, and it is internally provided with heater strip in the double-layer structure of drying box, the inside of the drying box is additionally provided with agitating device and heat
Wind conveying device, the inside of the dust cleaning case is fixedly installed pulsed dust-removing device, and is filled with water in dust cleaning case cavity bottom
Solution；Air cleaning unit is provided at the top of dust cleaning case.
As a further solution of the present invention: the top center of the drying box is provided with by motor mount to be turned
Dynamic motor, the output end of the rotary electric machine are provided with agitating shaft by shaft coupling, and the agitating shaft is located at the inside of drying box,
And several groups paddle is provided on agitating shaft, the inner inclination of the drying box is provided with filtering table, the end the filtering table A
Drying box side on offer discharge port, the drying box bottom immediately below the filtering table is horn-like structure, and dry
The bottom of dry case is provided with dust sewage draining exit, and hot-blast conveying appliance is fixedly installed in the exterior lateral sides of the drying box, described
The output end of hot-blast conveying appliance is connected with hot air pipe, and the hot air pipe is horizontally set on the inside of drying box, the drying box
Top surface side offers feed inlet, and the drying box top surface other side is provided with exhaust fan, the exhaust fan input terminal connection
The inside of drying box is arranged in exhaust column, and the inside of dust cleaning case is arranged in the exhaust column of the exhaust fan output end connection.
As further scheme of the invention: the inside of the dust cleaning case is filled with aqueous solution, and in dust cleaning case
Portion is provided with vehicle water installations, and the top half of the vehicle water installations is located above the water surface, and the lower half portion of vehicle water installations is located at water
Below face, be fixedly installed water injecting tank in the exterior lateral sides of the dust cleaning case, the side bottom and dust cleaning case of the water injecting tank it
Between offer port, and be provided with filter on port, gas bag, gas bag be fixedly installed in the exterior lateral sides of the dust cleaning case
Output end be connected with electromagnetic pulse pipe, the inside of the dust cleaning case is fixedly installed card, is provided with below the card
Bag dust filter, the air cleaning unit at the top of the dust cleaning case are made of purification device one and purification device two, the dust cleaning case
Top is provided with air outlet duct, and the inside of dust cleaning case, the air outlet slit is arranged in one end of the air outlet duct
The other end of pipeline is connected in turn on purification device one and purification device two.
As further scheme of the invention: the purification device one is closed case structure, and in purification device
Several bar shaped notches are offered on one top surface, the T-type plate is inserted into the inside of purification device one by bar shaped notch, described
The vertical plate of T-type plate is cavity network, and fills activated carbon adsorption stratum granulosum in the vertical plate cavity inside of T-type plate.
As further scheme of the invention: the purification device two is closed case structure, and in purification device
It is provided with exhaust pipe on two top surface, and is internally provided with quartz burner in purification device two.
As further scheme of the invention: equidistantly offering several on the circular arc side on the upside of the hot air pipe and go out
Air port, and protection net is provided on air outlet.
As further scheme of the invention: the heating sheet is made of PT thermistor, and PT thermistor and electricity
Source is electrically connected.
As further scheme of the invention: the bottom of the dust cleaning case is horn-like structure, and at the bottom of dust cleaning case
Portion is provided with sewage water discharge pipe.
As further scheme of the invention: being provided with control valve on the dust sewage draining exit and sewage water discharge pipe.
Compared with prior art, the beneficial effects of the present invention are:
1, by the drying of Masterbatch and dedusting step-by-step processing, so that the drying of Masterbatch is more thorough, the dedusting of Masterbatch
More efficiently；
2, heating sheet is provided with by the inner wall in drying box, the bottom of drying box is provided with heating tube, cooperation stirring dress
The stirring action set, making the drying efficiency of Masterbatch, faster the drying of Masterbatch is more uniform, improves the processing matter of Masterbatch
Amount；
3, the dust in drying box is pumped by dust cleaning case by exhaust fan, is dusted by pulse dust removal equipment, and lead to
The aqueous solution crossed in dust cleaning case and dust is adsorbed, keeps the dust removing effects of Masterbatch more preferable.
4, the gas after dedusting is further processed by setting air cleaning unit, the gas that dust cleaning case is discharged
It is purer, the effective protection respiratory health of operator.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for Masterbatch dust-extraction unit.
Fig. 2 is the structural schematic diagram for heating tube in Masterbatch dust-extraction unit.
Fig. 3 is the structural schematic diagram for paddle in Masterbatch dust-extraction unit.
Fig. 4 is the structural schematic diagram for purification device one in Masterbatch dust-extraction unit.
Fig. 5 is the structural schematic diagram for T-type plate in Masterbatch dust-extraction unit.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~5, in the embodiment of the present invention, one kind being used for Masterbatch dust-extraction unit, including drying box 1 and dedusting
Case 2 is attached between the drying box 1 and dust cleaning case 2 by exhaust column 6, and the drying box 1 and dust cleaning case 2 are closed
Cylindrical-shaped structure, the side wall of the drying box 1 is double-layer structure, and is internally provided with heating in the double-layer structure of drying box 1
Silk 9, the inside of the drying box 1 is additionally provided with agitating device and hot-blast conveying appliance, and the inside of the dust cleaning case 2 is fixedly installed
Pulsed dust-removing device, and aqueous solution is filled in 2 cavity bottom of dust cleaning case；The top of dust cleaning case 2 is provided with air cleaning unit,
By the drying of Masterbatch and dedusting step-by-step processing, so that the drying of Masterbatch is more thorough, the dedusting of Masterbatch is more efficient.
The top center of the drying box 1 is provided with rotary electric machine 4, the rotary electric machine 4 by motor mount
Output end agitating shaft 11 is provided with by shaft coupling, the agitating shaft 11 is located at the inside of drying box 1, and on agitating shaft 11
It is provided with several groups paddle 10, the inner inclination of the drying box 1 is provided with filtering table 13, and the end the filtering table 13A is done
Discharge port 12 is offered on the side of dry case 1,1 bottom of drying box immediately below the filtering table 15 is horn-like structure, and
The bottom of drying box 1 is provided with dust sewage draining exit 14, is fixedly installed hot-blast conveying appliance in the exterior lateral sides of the drying box 1
7, the output end of the hot-blast conveying appliance 7 is connected with hot air pipe 8, and the hot air pipe 8 is horizontally set on the inside of drying box 1,
The 1 top surface side of drying box offers feed inlet 3, and the 1 top surface other side of drying box is provided with exhaust fan 5, the exhausting
The inside of drying box 1 is arranged in the exhaust column 6 of 5 input terminal of machine connection, and the exhaust column 6 of 5 output end of the exhaust fan connection is arranged
In the inside of dust cleaning case 2, by being provided with heating sheet 9 in the inner wall of drying box 1, the bottom of drying box 1 is provided with heating tube 8,
The stirring action for cooperating agitating device, making the drying efficiency of Masterbatch, faster the drying of Masterbatch is more uniform, improves Masterbatch
Processing quality.
The inside of the dust cleaning case 2 is filled with aqueous solution, and is internally provided with vehicle water installations 24 in dust cleaning case 2, described
The top half of vehicle water installations 24 is located above the water surface, and the lower half portion of vehicle water installations 24 is located at below the water surface, is filled by vehicle water
Setting 24 makes aqueous solution utmostly incorporate the dust in dust cleaning case 2, is fixedly installed water filling in the exterior lateral sides of the dust cleaning case 2
Case 25 offers port between the side bottom and dust cleaning case 2 of the water injecting tank 25, and is provided with filter 26 on port,
It is fixedly installed in the exterior lateral sides of the dust cleaning case 2 by setting water injecting tank 25 convenient for the replacement of aqueous solution in dust cleaning case 2
Gas bag 22, the output end of gas bag 22 are connected with electromagnetic pulse pipe 21, and the inside of the dust cleaning case 2 is fixedly installed card 20, institute
The lower section for stating card 20 is provided with bag dust filter 23, and the air cleaning unit at 2 top of dust cleaning case is by purification device 1 and only
2 18 compositions are set in makeup, and the top of the dust cleaning case 2 is provided with air outlet duct 15, one end of the air outlet duct 15
The inside of dust cleaning case 2 is set, and the other end of the air outlet duct 15 is connected to purification device 1 and purification dress in turn
It sets on 2 18, the dust in drying box 1 is pumped by dust cleaning case 2 by exhaust fan 5, is dusted by pulse dust removal equipment, and
It is adsorbed by the aqueous solution in dust cleaning case 2 and to dust, keeps the dust removing effects of Masterbatch more preferable.
The purification device 1 is closed case structure, and offers several on the top surface of purification device 1
Bar shaped notch 30, the T-type plate 31 by bar shaped notch 30 be inserted into purification device 1 inside, the T-type plate 31 it is vertical
Plate is cavity network, and fills activated carbon adsorption stratum granulosum 32, the purification dress in the vertical plate cavity inside of T-type plate 31
2 18 are set as closed case structure, and is provided with exhaust pipe 17 on the top surface of purification device 2 18, and in purification device two
18 are internally provided with quartz burner 19, by setting purification device 1 and purification device 2 18 by gas after dedusting into
Row is further processed, and the gas that dust cleaning case 2 is discharged is purer, the effective protection respiratory health of operator
Several air outlets 29 are equidistantly offered on the circular arc side of 8 upside of hot air pipe, and are set on air outlet 29
It is equipped with protection net, prevents Masterbatch from entering air hose through air outlet 29.
The heating sheet 9 is made of PT thermistor, and PT thermistor is electrically connected with the power supply.
The bottom of the dust cleaning case 2 is horn-like structure, and the bottom of dust cleaning case 2 is provided with sewage water discharge pipe 28.
It is provided with control valve on the dust sewage draining exit 14 and sewage water discharge pipe 28, controls dust sewage draining exit 14 and sewage
The on-off of sewage pipe 28.
The working principle of the invention is: Masterbatch to be dried and dedusting being put into drying box 1, passes through 1 inner wall of drying box
In 1 bottom of heating sheet 9 and drying box on heating tube 8 Masterbatch inside drying box 1 is dried, and pass through agitating shaft
The stirring action of 11 pairs of Masterbatch makes drying efficiency of the Masterbatch in drying box 1 faster, and dry mass is more preferable, after dry
Drying box 1 is discharged through discharge port 12 in Masterbatch, and in drying process of the drying box 1 to Masterbatch, by the dust in drying box 1
Through exhaust fan 5 it is thick enter dust cleaning case 2 made in Masterbatch process by the aqueous solution and pulsed dust-removing device in dust cleaning case 2
Dust removing effects it is more preferable, and by setting purification device 1 and purification device 2 18, the gas after dedusting is carried out further
Processing, the gas that dust cleaning case 2 is discharged is purer, the effective protection respiratory health of operator.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (8)
1. one kind is used for Masterbatch dust-extraction unit, it is characterised in that: including drying box (1) and dust cleaning case (2), the drying box
(1) it is attached between dust cleaning case (2) by exhaust column (6), the drying box (1) and dust cleaning case (2) are closed circle
The side wall of column structure, the drying box (1) is double-layer structure, and is internally provided with heating in the double-layer structure of drying box (1)
Silk (9), the inside of the drying box (1) are additionally provided with agitating device and hot-blast conveying appliance, and the inside of the dust cleaning case (2) is fixed
It is provided with pulsed dust-removing device, and is filled with aqueous solution in dust cleaning case (2) cavity bottom；The top setting of dust cleaning case (2) is free
Air purifying apparatus；
The top center of the drying box (1) is provided with rotary electric machine (4), the rotary electric machine by motor mount
(4) output end is provided with agitating shaft (11) by shaft coupling, and the agitating shaft (11) is located at the inside of drying box (1), and
It is provided on agitating shaft (11) several groups paddle (10), the inner inclination of the drying box (1) is provided with filtering table (13), institute
It states and is offered discharge port (12) on the side of the drying box (1) at filtering table (13) end A, the drying immediately below the filtering table (15)
Case (1) bottom is horn-like structure, and is provided with dust sewage draining exit (14) in the bottom of drying box (1), the drying box (1)
It is fixedly installed in exterior lateral sides hot-blast conveying appliance (7), the output end of the hot-blast conveying appliance (7) is connected with hot air pipe
(8), the hot air pipe (8) is horizontally set on the inside of drying box (1), and drying box (1) the top surface side offers feed inlet
(3), it and in drying box (1) top surface other side is provided with exhaust fan (5), the exhaust column (6) of exhaust fan (5) the input terminal connection
Inside in drying box (1) is set, and the exhaust column (6) of exhaust fan (5) the output end connection is arranged in the interior of dust cleaning case (2)
Portion.
A kind of be used for Masterbatch dust-extraction unit 2. according to claim 1, which is characterized in that the dust cleaning case (2) it is interior
Portion is filled with aqueous solution, and being internally provided with vehicle water installations (24) in dust cleaning case (2), the upper half of the vehicle water installations (24)
Above the water surface, the lower half portion of vehicle water installations (24) is located at below the water surface quartile, solid in the exterior lateral sides of the dust cleaning case (2)
Surely it is provided with water injecting tank (25), offers port between the side bottom and dust cleaning case (2) of the water injecting tank (25), and in port
On be provided with filter (26), be fixedly installed gas bag (22) in the exterior lateral sides of the dust cleaning case (2), the output of gas bag (22)
End is connected with electromagnetic pulse pipe (21), and the inside of the dust cleaning case (2) is fixedly installed card (20), under the card (20)
Side is provided with bag dust filter (23), and the air cleaning unit at the top of the dust cleaning case (2) is by purification device one (16) and purification device
Two (18) form, and are provided with air outlet duct (15) at the top of the dust cleaning case (2), the one of the air outlet duct (15)
End is arranged in the inside of dust cleaning case (2), and the other end of the air outlet duct (15) is connected to purification device one (16) in turn
On purification device two (18).
3. according to claim 2 a kind of for Masterbatch dust-extraction unit, which is characterized in that the purification device one (16)
For closed case structure, and several bar shaped notches (30), the T-type plate are offered on the top surface of purification device one (16)
(31) by the inside of bar shaped notch (30) insertion purification device one (16), the vertical plate of the T-type plate (31) is cavity grid
Structure, and activated carbon adsorption stratum granulosum (32) are filled in the vertical plate cavity inside of T-type plate (31).
4. according to claim 2 a kind of for Masterbatch dust-extraction unit, which is characterized in that the purification device two (18)
For closed case structure, and exhaust pipe (17) are provided on the top surface of purification device two (18), and in purification device two
(18) be internally provided with quartz burner (19).
5. according to claim 1 a kind of for Masterbatch dust-extraction unit, which is characterized in that on the upside of the hot air pipe (8)
Circular arc side on equidistantly offer several air outlets (29), and be provided with protection net on air outlet (29).
6. according to claim 1 a kind of for Masterbatch dust-extraction unit, which is characterized in that the heating sheet (9) is PT
Thermistor is made, and PT thermistor is electrically connected with the power supply.
7. according to claim 1 a kind of for Masterbatch dust-extraction unit, which is characterized in that the bottom of the dust cleaning case (2)
Portion is horn-like structure, and the bottom of dust cleaning case (2) is provided with sewage water discharge pipe (28).
8. according to claim 1 a kind of for Masterbatch dust-extraction unit, which is characterized in that the dust sewage draining exit (14)
Control valve is provided with on sewage water discharge pipe (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910264655.2A CN110064638A (en) | 2019-04-03 | 2019-04-03 | One kind being used for Masterbatch dust-extraction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910264655.2A CN110064638A (en) | 2019-04-03 | 2019-04-03 | One kind being used for Masterbatch dust-extraction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110064638A true CN110064638A (en) | 2019-07-30 |
Family
ID=67367021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910264655.2A Withdrawn CN110064638A (en) | 2019-04-03 | 2019-04-03 | One kind being used for Masterbatch dust-extraction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110064638A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953858A (en) * | 2019-10-24 | 2020-04-03 | 太湖县木子峰农业发展有限公司 | Agricultural and forestry waste treatment device |
| CN111069041A (en) * | 2019-12-26 | 2020-04-28 | 兴化市荣宝油脂有限公司 | Corn automatic weighing and bagging device |
-
2019
- 2019-04-03 CN CN201910264655.2A patent/CN110064638A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953858A (en) * | 2019-10-24 | 2020-04-03 | 太湖县木子峰农业发展有限公司 | Agricultural and forestry waste treatment device |
| CN111069041A (en) * | 2019-12-26 | 2020-04-28 | 兴化市荣宝油脂有限公司 | Corn automatic weighing and bagging device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190730 |
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| WW01 | Invention patent application withdrawn after publication |