CN109158286A - A kind of house refuse screening improved movable rotary screen - Google Patents
A kind of house refuse screening improved movable rotary screen Download PDFInfo
- Publication number
- CN109158286A CN109158286A CN201811149883.7A CN201811149883A CN109158286A CN 109158286 A CN109158286 A CN 109158286A CN 201811149883 A CN201811149883 A CN 201811149883A CN 109158286 A CN109158286 A CN 109158286A
- Authority
- CN
- China
- Prior art keywords
- rotary screen
- scraping ring
- outer cylinder
- house refuse
- fixedly installed
- 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.)
- Withdrawn
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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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
- B07B1/24—Revolving drums with fixed or moving interior agitators
-
- 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
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- 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
-
- 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
- B07B1/50—Cleaning
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/526—Cleaning with brushes or scrapers with scrapers
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of house refuse screening improved movable rotary screens, it is related to technical field of domestic garbage treatment, house refuse screening improved movable rotary screen, including pedestal, the top center of the pedestal is fixedly installed with collecting box, the top two sides of the pedestal are fixedly installed with lifter, loading plate is installed at the top of the lifter, the loading plate is set as two, the top of two loading plates is fixedly connected with the first limit base and the second limit base respectively, and the right hand top of second limit base is fixedly installed with driving motor.House refuse screening improved movable rotary screen, solve the problems, such as soft rubbish material adherency accumulation and blocking sieve pore, first scraping ring can strike off the rubbish of sieve pore blockade, and second scraping ring can to outer tube inner wall accumulate rubbish strike off, solid self-cleaning function, labor intensity is alleviated, maintenance cost is reduced.
Description
Technical field
The present invention relates to technical field of domestic garbage treatment, specially a kind of house refuse screening is rolled with improved movable
Shaft screen.
Background technique
With the quickening of the fast-developing urbanization process of Chinese society economy and the rapid raising of living standards of the people,
City production is also consequently increased rapidly with the junk generated in life process, and house refuse land occupation pollutes environment
Situation and influence to health of people are also all the more obvious, and the substantial increase of domestic waste keeps garbage disposal more and more tired
The problems such as difficulty, resultant environmental pollution, gradually has aroused widespread concern in all circles of society, and China will realize domestic waste
Industrialization, recycling, minimizing and innoxious, just must be low in face of mixed collection, the content of recyclable materials and calorific value, rubbish
Rubbish moisture content and the high house refuse of biodegradable organic content, currently, house refuse preliminary screening all uses roller
It being sieved, existing rotary screen does not have self-cleaning function, it is be easy to cause soft rubbish blocking sieve pore and accumulation inner wall,
It screens precision and screening quality is lower, increase labor intensity, dependable with function is lower.
Currently, existing rotary screen, inconvenient for use, it is unfavorable for promoting the use of.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of house refuse screening improved movable rotary screens, solve
Existing rotary screen does not have self-cleaning function, be easy to cause soft rubbish blocking sieve pore and accumulation inner wall, screens precision
It is lower with screening quality, increase labor intensity, the lower problem of dependable with function.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of house refuse screening improved movable rotary screen, including pedestal, the top center of the pedestal are fixedly mounted
There is collecting box, the top two sides of the pedestal are fixedly installed with lifter, and loading plate, institute are equipped at the top of the lifter
It states loading plate and is set as two, the top of two loading plates is fixedly connected with the first limit base and the second limit base respectively,
The right hand top of second limit base is fixedly installed with driving motor；
Outer cylinder is provided with above the collecting box, the internal activity of the outer cylinder is equipped with shaft, the both ends point of the shaft
Be not flexibly connected with the first limit base and the second limit base, the outer cylinder is internally provided with rotary screen, the rotary screen with turn
Axis is flexibly connected, and the two sides of the bottom of the rotary screen are fixedly connected to discharge hose, and the outer surface of the shaft is fixedly mounted
There is the driving gear being arranged symmetrically；
Screw rod is installed, the both ends of the screw rod are flexibly connected with the inner wall of outer cylinder, the screw rod above the rotary screen
The equal fixing sleeve in two sides be connected to linked gear, the inner roof wall of the outer cylinder offers guide groove, and the outer surface of the rotary screen is sliding
It is dynamic that cleaning assemblies is installed；
The cleaning assemblies is made of the first scraping ring, the second scraping ring and sleeve, and the two sides up and down of the sleeve are fixedly installed with
Connecting rod, the left and right sides is fixedly connected to stiffening plate between first scraping ring and the second scraping ring, second scraping ring it is outer
Surface crown is fixedly connected with guide protrusions, and the guide protrusions and guide groove are slidably connected, and the middle part of the shaft is fixed to be connected
It is connected to multiple stirring rods.
Optionally, the two sides of the bottom of the pedestal are fixedly installed with wheel；
The inside of the collecting box is fixedly installed with the partition being arranged symmetrically；
The bottom of the loading plate is fixedly connected with the top of lifter.
Optionally, the shaft runs through the inside of outer cylinder, and the right end of the shaft is through the second limit base and electric with driving
Machine is fixedly connected；
Outlet valve is fixedly installed among the bottom of the outer cylinder；
The outer surface of the rotary screen offers the sieve pore being evenly arranged.
Optionally, the discharge hose is fixedly connected through outer cylinder and with collecting box；
The driving gear is between outer cylinder and rotary screen；
The linked gear and driving gear engagement connection.
Optionally, sleeve top, first scraping ring and second between the first scraping ring and the second scraping ring is scraped
Ring is fixedly connected with connecting rod；
The guide protrusions and guide groove are equipped with.
Optionally, the inner diameter values of first scraping ring are equal to the outer diameter value of rotary screen；
The outer diameter value of second scraping ring is equal to the inner diameter values of outer cylinder；
Multiple stirring rods equally arrange that the stirring rod is located at the inside of rotary screen.
(3) beneficial effect
The present invention provides a kind of house refuse screening improved movable rotary screen, have it is following the utility model has the advantages that
(1), house refuse screening improved movable rotary screen can be by collecting box point on the one hand by setting partition
At different garbage collection areas, being conducive to screen the later period carries out house refuse to separate and collect arrangement, enhances reliability and reality
Screening dead angle is avoided, the uniformity and completeness of screening is improved, improves on the other hand by setting lifter with property
Screen precision and screening quality.
(2), house refuse screening improved movable rotary screen solves soft rubbish by the way that cleaning assemblies is arranged
The problem of accumulation of rubbish material sticks and blocking sieve pore, the first scraping ring can strike off the rubbish of sieve pore blockade, and second scrapes
The rubbish that ring can accumulate outer tube inner wall strike off, and solid self-cleaning function alleviates labor intensity, reduces dimension
Cost is protected, service life is extended.
Detailed description of the invention
Fig. 1 is improved movable rotary screen schematic diagram of the invention；
Fig. 2 is collecting box schematic cross-sectional view of the invention；
Fig. 3 is outer cylinder schematic cross-sectional view of the invention；
Fig. 4 is cleaning assemblies schematic side view of the invention；
Fig. 5 is rotary screen schematic cross-sectional view of the invention；
Fig. 6 is stirring rod schematic side view of the invention.
In figure: pedestal 1, wheel 2, collecting box 3, partition 4, lifter 5, loading plate 6, the first limit base 7, the second limit base
8, driving motor 9, outer cylinder 10, shaft 11, outlet valve 12, rotary screen 13, sieve pore 14, discharge hose 15, driving gear 16, screw rod
17, linked gear 18, guide groove 19, cleaning assemblies 20, the first scraping ring 21, the second scraping ring 22, sleeve 23, connecting rod 24, guiding are convex
Play 25, stiffening plate 26, stirring rod 27.
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.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " setting ", " installation ", " connected ", " connection ",
Terms such as " fixations " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection；It can be mechanical connect
It connects；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
Fig. 1-6 is please referred to, the present invention provides a kind of technical solution:
A kind of house refuse screening improved movable rotary screen, including pedestal 1, the top center of pedestal 1 are fixedly installed with
Collecting box 3, the top two sides of pedestal 1 are fixedly installed with lifter 5, and the top of lifter 5 is equipped with loading plate 6, loading plate 6
Two are set as, the top of two loading plates 6 is fixedly connected with the first limit base 7 and the second limit base 8, the second limit base respectively
8 right hand top is fixedly installed with driving motor 9；
The top of collecting box 3 is provided with outer cylinder 10, and the internal activity of outer cylinder 10 is equipped with shaft 11, the both ends of shaft 11 respectively with
First limit base 7 and the second limit base 8 are flexibly connected, and outer cylinder 10 is internally provided with rotary screen 13, rotary screen 13 and shaft 11
It is flexibly connected, the two sides of the bottom of rotary screen 13 are fixedly connected to discharge hose 15, and the outer surface of shaft 11 is fixedly installed with pair
Claim the driving gear 16 of arrangement；
The top of rotary screen 13 is equipped with screw rod 17, and the both ends of screw rod 17 are flexibly connected with the inner wall of outer cylinder 10, screw rod 17
The equal fixing sleeve in two sides is connected to linked gear 18, and the inner roof wall of outer cylinder 10 offers guide groove 19, the outer surface sliding of rotary screen 13
Cleaning assemblies 20 is installed；
Cleaning assemblies 20 is made of the first scraping ring 21, the second scraping ring 22 and sleeve 23, by the way that cleaning assemblies 20 is arranged, is solved soft
The problem of matter rubbish material adherency accumulation and blocking sieve pore 14, the rubbish that the first scraping ring 21 can block sieve pore 14 is scraped
It removes, and the rubbish that the second scraping ring 22 can accumulate 10 inner wall of outer cylinder strike off, solid self-cleaning function alleviates labor
Fatigue resistance reduces maintenance cost, extends service life, and the two sides up and down of sleeve 23 are fixedly installed with connecting rod 24, and first
The left and right sides is fixedly connected to stiffening plate 26 between scraping ring 21 and the second scraping ring 22, and the external surface top of the second scraping ring 22 is solid
Surely guide protrusions 25 are connected with, guide protrusions 25 and guide groove 19 are slidably connected, and the middle part of shaft 11 is fixedly connected with multiple stir
Mix bar 27.
As a kind of optional technical solution of the invention:
The two sides of the bottom of pedestal 1 are fixedly installed with wheel 2, and the space facilitated is mobile, improve convenience；
The inside of collecting box 3 is fixedly installed with the partition 4 being arranged symmetrically, and by the way that partition 4 is arranged, collecting box 3 can be divided into not
With garbage collection area, be conducive to screen the later period house refuse is carried out to separate and collect arrangement, enhance dependable with function；
The bottom of loading plate 6 is fixedly connected with the top of lifter 5, by the way that lifter 5 is arranged, is avoided screening dead angle, is improved
The uniformity and completeness of screening improve screening precision and screening quality.
As a kind of optional technical solution of the invention:
Shaft 11 runs through the inside of outer cylinder 10, and the right end of shaft 11 is fixedly connected through the second limit base 8 and with driving motor 9；
Outlet valve 12 is fixedly installed among the bottom of outer cylinder 10；
The outer surface of rotary screen 13 offers the sieve pore 14 being evenly arranged.
As a kind of optional technical solution of the invention:
Discharge hose 15 is fixedly connected through outer cylinder 10 and with collecting box 3；
Drive gear 16 between outer cylinder 10 and rotary screen 13；
Linked gear 18 and the driving engagement connection of gear 16.
As a kind of optional technical solution of the invention:
The top between the first scraping ring 21 and the second scraping ring 22 of sleeve 23, the first scraping ring 21 and the second scraping ring 22 are and connecting rod
24 are fixedly connected；
Guide protrusions 25 and guide groove 19 are equipped with.
As a kind of optional technical solution of the invention:
The inner diameter values of first scraping ring 21 are equal to the outer diameter value of rotary screen 13；
The outer diameter value of second scraping ring 22 is equal to the inner diameter values of outer cylinder 10；
Multiple stirring rods 27 equally arrange that stirring rod 27 is located at the inside of rotary screen 13.
The electric elements occurred in this article are electrically connected with extraneous main controller and 220V alternating current, and main controller can be meter
Calculation machine etc. plays the conventionally known equipment of control.
In conclusion house refuse screening improved movable rotary screen, in a situation of use where, driving motor 9
Periodic rotary clockwise and anticlockwise drives screw rod 17 to rotate, and then reaches cleaning assemblies 20 or so by driving gear 16
The purpose of reciprocating motion, by the way that wheel 2 is arranged, the space facilitated is mobile, improves convenience, on the one hand passes through setting partition
4, collecting box 3 can be divided into different garbage collection areas, be conducive to screen the later period house refuse is carried out to separate and collect arrangement,
Dependable with function is enhanced, on the other hand by setting lifter 5, screening dead angle is avoided, improves the uniform of screening
Property and completeness, improve screening precision and screening quality, secondly by setting cleaning assemblies 20, solve soft rubbish material
The problem of adherency accumulation and blocking sieve pore 14, the rubbish that the first scraping ring 21 can block sieve pore 14 strikes off, and second scrapes
The rubbish that ring 22 can accumulate 10 inner wall of outer cylinder strike off, and solid self-cleaning function alleviates labor intensity, reduce
Maintenance cost, extends service life, screen complete in the case where, the house refuse of rotary screen 13 passes through discharge hose 15
Into collecting box 3, the house refuse in outer cylinder 10 enters collecting box 3 by outlet valve 12.
It should be noted that in the present invention unless specifically defined or limited otherwise, fisrt feature is in second feature
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact "up" or "down".
Moreover, fisrt feature can be above the second feature " above ", " above " and " above " fisrt feature right above second feature or tiltedly
Top, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature second feature " under ", " lower section " and
" following " can be fisrt feature and be directly under or diagonally below the second feature, or be merely representative of first feature horizontal height less than
Two features.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of house refuse screening improved movable rotary screen, including pedestal (1), it is characterised in that:
The top center of the pedestal (1) is fixedly installed with collecting box (3), and the top two sides of the pedestal (1) are fixedly mounted
Have lifter (5), be equipped with loading plate (6) at the top of the lifter (5), the loading plate (6) is set as two, two institutes
The top for stating loading plate (6) is fixedly connected with the first limit base (7) and the second limit base (8), second limit base (8) respectively
Right hand top be fixedly installed with driving motor (9)；
It is provided with outer cylinder (10) above the collecting box (3), the internal activity of the outer cylinder (10) is equipped with shaft (11), institute
The both ends for stating shaft (11) are flexibly connected with the first limit base (7) and the second limit base (8) respectively, the inside of the outer cylinder (10)
It is provided with rotary screen (13), the rotary screen (13) is flexibly connected with shaft (11), and the two sides of the bottom of the rotary screen (13) are equal
It is fixedly connected with discharge hose (15), the outer surface of the shaft (11) is fixedly installed with the driving gear (16) being arranged symmetrically；
It is equipped with screw rod (17) above the rotary screen (13), the both ends of the screw rod (17) are living with the inner wall of outer cylinder (10)
Dynamic connection, the equal fixing sleeve in two sides of the screw rod (17) are connected to linked gear (18), and the inner roof wall of the outer cylinder (10) offers
The outer surface of guide groove (19), the rotary screen (13) is slidably fitted with cleaning assemblies (20)；
The cleaning assemblies (20) is made of the first scraping ring (21), the second scraping ring (22) and sleeve (23), the sleeve (23)
Upper and lower two sides are fixedly installed with connecting rod (24), and the left and right sides is solid between first scraping ring (21) and the second scraping ring (22)
Surely it is connected with stiffening plate (26), the external surface top of second scraping ring (22) is fixedly connected with guide protrusions (25), described to lead
It is slidably connected to raised (25) and guide groove (19), is fixedly connected with multiple stirring rods (27) in the middle part of the shaft (11).
2. a kind of house refuse screening improved movable rotary screen according to claim 1, it is characterised in that:
The two sides of the bottom of the pedestal (1) are fixedly installed with wheel (2)；
The inside of the collecting box (3) is fixedly installed with the partition (4) being arranged symmetrically；
The bottom of the loading plate (6) is fixedly connected with the top of lifter (5).
3. a kind of house refuse screening improved movable rotary screen according to claim 1, it is characterised in that:
The shaft (11) runs through the inside of outer cylinder (10), the right end of the shaft (11) through the second limit base (8) and with drive
Dynamic motor (9) are fixedly connected；
Outlet valve (12) are fixedly installed among the bottom of the outer cylinder (10)；
The outer surface of the rotary screen (13) offers the sieve pore (14) being evenly arranged.
4. a kind of house refuse screening improved movable rotary screen according to claim 1, it is characterised in that:
The discharge hose (15) is fixedly connected through outer cylinder (10) and with collecting box (3)；
The driving gear (16) is located between outer cylinder (10) and rotary screen (13)；
The linked gear (18) and driving gear (16) engagement connection.
5. a kind of house refuse screening improved movable rotary screen according to claim 1, it is characterised in that:
The sleeve (23) top between the first scraping ring (21) and the second scraping ring (22), first scraping ring (21) and the
Two scraping rings (22) are fixedly connected with connecting rod (24)；
The guide protrusions (25) and guide groove (19) are equipped with.
6. a kind of house refuse screening improved movable rotary screen according to claim 1, it is characterised in that:
The inner diameter values of first scraping ring (21) are equal to the outer diameter value of rotary screen (13)；
The outer diameter value of second scraping ring (22) is equal to the inner diameter values of outer cylinder (10)；
Multiple stirring rods (27) equally arrange that the stirring rod (27) is located at the inside of rotary screen (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149883.7A CN109158286A (en) | 2018-09-29 | 2018-09-29 | A kind of house refuse screening improved movable rotary screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149883.7A CN109158286A (en) | 2018-09-29 | 2018-09-29 | A kind of house refuse screening improved movable rotary screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109158286A true CN109158286A (en) | 2019-01-08 |
Family
ID=64892982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811149883.7A Withdrawn CN109158286A (en) | 2018-09-29 | 2018-09-29 | A kind of house refuse screening improved movable rotary screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109158286A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899303A (en) * | 2019-12-13 | 2020-03-24 | 屈妍希 | System for utilize heisui river horsefly to carry out kitchen garbage resourceful treatment |
| CN110980189A (en) * | 2019-12-30 | 2020-04-10 | 天津中科环境科技发展有限公司 | Vertical domestic waste screw conveyer |
| CN111113718A (en) * | 2019-12-26 | 2020-05-08 | 安徽嘉阳新材料科技有限公司 | Raw material drying device for PVC floor printing film preparation |
| WO2021237636A1 (en) * | 2020-05-29 | 2021-12-02 | 南京溧水高新创业投资管理有限公司 | Simple gravel screening device for building construction |
-
2018
- 2018-09-29 CN CN201811149883.7A patent/CN109158286A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899303A (en) * | 2019-12-13 | 2020-03-24 | 屈妍希 | System for utilize heisui river horsefly to carry out kitchen garbage resourceful treatment |
| CN111113718A (en) * | 2019-12-26 | 2020-05-08 | 安徽嘉阳新材料科技有限公司 | Raw material drying device for PVC floor printing film preparation |
| CN110980189A (en) * | 2019-12-30 | 2020-04-10 | 天津中科环境科技发展有限公司 | Vertical domestic waste screw conveyer |
| WO2021237636A1 (en) * | 2020-05-29 | 2021-12-02 | 南京溧水高新创业投资管理有限公司 | Simple gravel screening device for building construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190108 |
|
| WW01 | Invention patent application withdrawn after publication |