CN107350004A - Efficient pulverizing device is used in a kind of building waste recovery - Google Patents
Efficient pulverizing device is used in a kind of building waste recovery Download PDFInfo
- Publication number
- CN107350004A CN107350004A CN201710695284.4A CN201710695284A CN107350004A CN 107350004 A CN107350004 A CN 107350004A CN 201710695284 A CN201710695284 A CN 201710695284A CN 107350004 A CN107350004 A CN 107350004A
- Authority
- CN
- China
- Prior art keywords
- casing
- crushing
- pulverization roller
- building waste
- fixed
- 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- Withdrawn
Links
- 238000010298 pulverizing process Methods 0.000 title claims abstract description 55
- 239000002699 waste material Substances 0.000 title claims abstract description 38
- 238000011084 recovery Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 150000002739 metals Chemical class 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- -1 reinforcing bar Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/02—Jaw crushers or pulverisers
- B02C1/04—Jaw crushers or pulverisers with single-acting jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a kind of building waste recovery efficient pulverizing device,Including casing,The cabinets cavity top is provided with and is fixed with precrushing mechanism,Precrushing mechanism includes stationary crushing plate,Movable crushing shell,Disk,Hydraulic cylinder and motor,Deironing mechanism is provided with below precrushing mechanism,The first pulverization roller and the second pulverization roller are provided with below Deironing mechanism,The present invention is provided with precrushing mechanism,In the building waste dropping process of bulk,Progressively the building waste of bulk is crushed,The metal in rubbish is exposed,And be advantageous to subsequently crush,Improve crush efficiency,And the size of construction waste crushing particle can be adjusted,Adjust degree of crushing,Provided with the first pulverization roller and the second pulverization roller,Carry out two level crushing,What is crushed is more thorough,Fully,Good crushing effect,Efficiency high,Provided with Deironing mechanism,The metals such as the reinforcing bar in building waste are gone out,And it is collected,It is simple in construction,It is easy to operate.
Description
Technical field
The present invention relates to a kind of reducing mechanism, efficient pulverizing device is used in specifically a kind of building waste recovery.
Background technology
With the development of the social economy, China constantly deepens Urbanization Construction, plus the raising of the level of consumption, city is built
Building refuse is more and more, and most building wastes are just arbitrarily filled by unit in charge of construction, stacked without any processing, not only right
Environment impacts, while wastes regenerative resource, and currently, the building waste reducing mechanism that enterprise uses typically directly uses powder
Broken roller is crushed, and is directly crushed in building waste often containing metals such as reinforcing bar, steel bars using pulverization roller, easily makes powder
Broken roller damage, there is stuck phenomenon, has a strong impact on the service life of device in device, or even security incident occurs, Shortcomings.
The content of the invention
It is an object of the invention to provide a kind of building waste recovery efficient pulverizing device, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides following technical scheme:
A kind of building waste recovery efficient pulverizing device, including casing, precrushing mechanism, Deironing mechanism, the first crushing
Roller and the second pulverization roller, the casing top centre are provided with feed hopper, and feeding funnel bottom part connects with cabinets cavity, on cabinets cavity
Portion is provided with and is fixed with precrushing mechanism, and precrushing mechanism includes stationary crushing plate, movable crushing shell, disk, hydraulic cylinder and motor,
The stationary crushing plate is fixed among cabinets cavity top, and stationary crushing plate both sides are equipped with movable crushing shell, and activity is broken
Plate is obliquely installed, and movable crushing shell is gradually close to stationary crushing plate from top to bottom, and movable crushing shell bottom and hydraulic cylinder are stretched
Contracting bar is hinged, and hydraulic cylinder is connected with cabinet wall, and movable crushing shell top is connected with disk, and the first circle is fixed with disk
Pin, the first chute coordinated with the first straight pin is offered on movable crushing shell, disk is installed in rotary shaft, and rotary shaft is another
One end is through casing rear wall and extends to outside casing, and rotary shaft is rotatablely connected with casing rear wall, and rotary shaft is located at casing
The first belt pulley is installed on outside shaft part, the first belt pulley is connected by belt with the second belt pulley, the second belt pulley peace
On output shaft loaded on motor, Deironing mechanism is provided with below the precrushing mechanism, Deironing mechanism is arranged at metal collection inframe
Above chamber, the Deironing mechanism includes portable plate, electromagnet and electric pushrod, totally two pieces and with casing center line of the portable plate
It is symmetrical arranged for symmetry axis, portable plate is connected close to one end of casing center line with body pivot, the portable plate other end and metal
Collection frame top side wall contacts, and portable plate tilts down setting, and portable plate upper surface is provided with electromagnet, and portable plate lower surface is consolidated
Surely there is fixed block, fixed block is connected with cross bar both ends, and cross bar both ends are fixed with the second straight pin, the second straight pin and fixation
The second slide opened up on block coordinates, and the metal collection frame both sides are provided with passage, and the first pulverization roller is provided with below passage
With the second pulverization roller, the first pulverization roller and the second pulverization roller are arranged side by side, and baffle plate is fixed with the inside of the second pulverization roller, and first crushes
Refuse collection frame is provided with below roller and the second pulverization roller, refuse collection frame is fixed on bottom half.
As the further scheme of the present invention:The stationary crushing plate two side is respectively and fixedly provided with the first crushing teeth.
As the further scheme of the present invention:The movable crushing shell is fixed with second close to the side of stationary crushing plate and broken
Broken tooth.
As the further scheme of the present invention:The disk is arranged at movable crushing shell rear.
As the further scheme of the present invention:The motor is connected by mounting seat and casing.
As the further scheme of the present invention:Arc is provided with above first pulverization roller.
Compared with prior art, the beneficial effects of the invention are as follows:The present invention is provided with precrushing mechanism, and precrushing mechanism includes
Stationary crushing plate, movable crushing shell, disk, hydraulic cylinder and motor, the pulley rotation of motor driven second, the second belt pulley pass through
The pulley rotation of belt drive first, the first belt pulley drive rotary shaft to rotate, and rotary shaft is disc-rotated, and disk passes through the
The cooperation drive activity crushing shell of one straight pin and the first chute swings, and passes through matching somebody with somebody for movable crushing shell and stationary crushing plate
Close, in the building waste dropping process of bulk, progressively the building waste of bulk is crushed, exposes the metal in rubbish
Out, and be advantageous to subsequently crush, improve crush efficiency, can by controlling the expansion link of hydraulic cylinder to elongate or shorten, from
And the size of construction waste crushing particle is adjusted, degree of crushing is adjusted, provided with the first pulverization roller and the second pulverization roller, carries out two level
Crush, crushing more thoroughly, fully, good crushing effect, efficiency high, provided with Deironing mechanism, Deironing mechanism includes portable plate, electricity
Magnet and electric pushrod, after crushing terminates, the expansion link of electric pushrod is controlled to shorten, electric pushrod drives cross bar to move downward,
Cross bar drives portable plate to turn around close to one end of casing center line to inner side by the cooperation of the second straight pin and the second chute
Dynamic, after turning to correct position, control electromagnet power-off, metal falls into metal collection inframe, completes to collect, simple in construction, behaviour
Facilitate.
Brief description of the drawings
Fig. 1 is the structural representation of building waste recovery efficient pulverizing device.
Fig. 2 is the structural representation of precrushing mechanism in building waste recovery efficient pulverizing device.
Fig. 3 is the structural representation of Deironing mechanism in building waste recovery efficient pulverizing device.
In figure:1- casings, 2- refuse collections frame, the pulverization rollers of 3- first, the pulverization rollers of 4- second, 5- arcs, 6- passages, 7-
Metal collection frame, 8- Deironing mechanisms, 9- hydraulic cylinders, 10- motors, the belt pulleys of 11- second, 12- belts, the belt pulleys of 13- first,
14- disks, 15- activities crushing shell, 16- feed hoppers, 17- stationary crushing plates, 18- rotary shafts, the straight pins of 19- first, 20- first
Chute, 21- baffle plates, 22- electric pushrods, 23- portable plates, 24- electromagnet, the chutes of 25- second, the straight pins of 26- second, 27- are horizontal
Bar.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 1~3, in the embodiment of the present invention, a kind of building waste recovery efficient pulverizing device, including casing 1,
Precrushing mechanism, Deironing mechanism 8, the first pulverization roller 3 and the second pulverization roller 4, the crown center of casing 1 are provided with feed hopper 16,
The bottom of feed hopper 16 connects with the inner chamber of casing 1, and the inner chamber top of casing 1 is provided with and is fixed with precrushing mechanism, and precrushing mechanism includes
Stationary crushing plate 17, movable crushing shell 15, disk 14, the box motor 10 of hydraulic cylinder 9, the stationary crushing plate 17 are fixed on casing 1
Among the top of inner chamber, the two side of stationary crushing plate 17 is respectively and fixedly provided with the first crushing teeth, and the both sides of stationary crushing plate 17 are equipped with activity
Crushing shell 15, movable crushing shell 15 are fixed with the second crushing teeth close to the side of stationary crushing plate 17, and movable crushing shell 15 tilts
Set, movable crushing shell 15 is gradually close to stationary crushing plate 17 from top to bottom, and the movable bottom of crushing shell 15 is stretched with hydraulic cylinder 9
Contracting bar is hinged, and hydraulic cylinder 9 is connected with the inwall of casing 1, and the movable top of crushing shell 15 is connected with disk 14, and disk 14 is arranged at
The movable rear of crushing shell 15, the first straight pin 19 is fixed with disk 14, is offered on movable crushing shell 15 and the first straight pin
19 the first chutes 20 coordinated, disk 14 are installed in rotary shaft 18, and the other end of rotary shaft 18 is through the rear wall of casing 1 and extends
To casing 1, rotary shaft 18 is rotatablely connected with the rear wall of casing 1, and rotary shaft 18, which is located on the shaft part outside casing 1, to be provided with
First belt pulley 13, the first belt pulley 13 are connected by belt 12 with the second belt pulley 11, and the second belt pulley 11 is installed on motor
On 10 output shaft, motor 10 is connected by mounting seat and casing 1, starts motor 10, and motor 10 drives 11 turns of the second belt pulley
Dynamic, the second belt pulley 11 drives the first belt pulley 13 to rotate by belt 12, and the first belt pulley 13 drives rotary shaft 18 to rotate, and turns
Moving axis 18 drives disk 14 to rotate, and disk 14 passes through the first straight pin 19 and the cooperation drive activity crushing shell 15 of the first chute 20
Swing, by the cooperation of movable crushing shell 15 and stationary crushing plate 17, in the building waste dropping process of bulk, progressively
The building waste of bulk is crushed, the metal in rubbish is exposed, and is advantageous to subsequently crush, improves and crushes effect
Rate, it can be adjusted by controlling the expansion link of hydraulic cylinder 9 to elongate or shorten, so as to adjust the size of construction waste crushing particle
Degree of crushing, the precrushing mechanism lower section are provided with Deironing mechanism 8, and Deironing mechanism 8 is arranged above the inner chamber of metal collection frame 7,
Deironing mechanism 8 includes portable plate 23, electromagnet 24 and electric pushrod 22, totally two pieces and with the center line of casing 1 of the portable plate 23
It is symmetrical arranged for symmetry axis, portable plate 23 is rotatablely connected close to one end of the center line of casing 1 with casing 1, the other end of portable plate 23
Being contacted with the top side wall of metal collection frame 7, portable plate 23 tilts down setting, and the upper surface of portable plate 23 is provided with electromagnet 24,
The lower surface of portable plate 23 is fixed with fixed block, and fixed block is connected with the both ends of cross bar 27, and the both ends of cross bar 27 are fixed with the second circle
Pin 26, the second straight pin 26 are slidably matched with the second chute 25 opened up on fixed block, and the both sides of metal collection frame 7 are provided with
Passage 6, the lower section of passage 6 are provided with the first pulverization roller 3 and the second pulverization roller 4, and the first pulverization roller 3 and the second pulverization roller 4 are arranged side by side,
The top of first pulverization roller 4 is provided with arc 5, and the effect of arc 5 is building waste is slid to the first pulverization roller 3 and the second powder
Between broken roller 4, the inner side of the second pulverization roller 4 is fixed with baffle plate 21, and the first pulverization roller 3 and the lower section of the second pulverization roller 4 are provided with rubbish and received
Collect frame 2, refuse collection frame 2 is fixed on the bottom of casing 1.
The present invention operation principle be:In the use of the present invention, starting motor 10, motor 10 drives 11 turns of the second belt pulley
Dynamic, the second belt pulley 11 drives the first belt pulley 13 to rotate by belt 12, and the first belt pulley 13 drives rotary shaft 18 to rotate, and turns
Moving axis 18 drives disk 14 to rotate, and disk 14 passes through the first straight pin 19 and the cooperation drive activity crushing shell 15 of the first chute 20
Swing, by the cooperation of movable crushing shell 15 and stationary crushing plate 17, in the building waste dropping process of bulk, progressively
The building waste of bulk is crushed, and two pieces of movable crushing shells 15 are crushed simultaneously, broken speed is fast, efficiency high, makes
Metal in rubbish is exposed, and is advantageous to subsequently crush, and improves crush efficiency, can be by controlling stretching for hydraulic cylinder 9
Contracting bar elongates or shortens, and so as to adjust the size of construction waste crushing particle, adjusts degree of crushing, the building waste after crushing falls
Onto portable plate 23, electromagnet 24 is powered, the metal adsorption in building waste is lived, avoids metal from entering follow-up grinders
Sequence, cause equipment stuck or damage, influence the physical life of equipment, the building waste for removing metal falls into the first powder by passage 6
Between the broken pulverization roller 4 of roller 3 and second, two level crushing, more thorough, abundant, good crushing effect, the efficiency high of crushing, powder are carried out
Building waste after broken is fallen into refuse collection mad 2, and after crushing terminates, the expansion link of control electric pushrod 22 shortens, electronic to push away
Bar 22 drives cross bar 27 to move downward, cross bar 27 by the cooperation of the second straight pin 26 and the second chute 25 drive portable plate around
Turned to the inside close to one end of the center line of casing 1, after 4 turn to correct position, control electromagnet 24 powers off, and metal falls into gold
Belong in collection frame 7, complete to collect, it is simple in construction, it is easy to operate.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. efficient pulverizing device, including casing (1), precrushing mechanism, Deironing mechanism (8), first are used in a kind of building waste recovery
Pulverization roller (3) and the second pulverization roller (4), it is characterised in that casing (1) crown center is provided with feed hopper (16), feed hopper
(16) bottom connects with casing (1) inner chamber, and casing (1) inner chamber top is provided with and is fixed with precrushing mechanism, and precrushing mechanism includes
Stationary crushing plate (17), movable crushing shell (15), disk (14), hydraulic cylinder (9) and motor (10), the stationary crushing plate (17)
It is fixed among casing (1) inner chamber top, stationary crushing plate (17) both sides are equipped with movable crushing shell (15), movable crushing shell
(15) it is obliquely installed, movable crushing shell (15) is gradually close to stationary crushing plate (17) from top to bottom, movable crushing shell (15) bottom
The expansion link in portion and hydraulic cylinder (9) is hinged, and hydraulic cylinder (9) is connected with casing (1) inwall, and movable crushing shell (15) top, which coordinates, to be connected
Disk (14) is connected to, the first straight pin (19) is fixed with disk (14), is offered and the first cylinder on movable crushing shell (15)
The first chute (20) that (19) coordinate is sold, disk (14) is installed in rotary shaft (18), and rotary shaft (18) other end runs through casing
(1) rear wall and extend to that casing (1) is outside, and rotary shaft (18) is rotatablely connected with casing (1) rear wall, rotary shaft (18) is located at
The first belt pulley (13) is installed on the outside shaft part of casing (1), the first belt pulley (13) passes through belt (12) and the second belt
(11) connection is taken turns, the second belt pulley (11) is installed on the output shaft of motor (10), and iron removaling is provided with below the precrushing mechanism
Mechanism (8), the Deironing mechanism (8) include portable plate (23), electromagnet (24) and electric pushrod (22), the portable plate (23)
Totally two pieces and it is symmetrical arranged using casing (1) center line as symmetry axis, portable plate (23) is close to one end of casing (1) center line and case
Body (1) is rotatablely connected, and portable plate (23) other end contacts with metal collection frame (7) top side wall, and portable plate (23) tilts down
Set, portable plate (23) upper surface is provided with electromagnet (24), and portable plate (23) lower surface is fixed with fixed block, fixed block and horizontal stroke
Bar (27) both ends are connected, and cross bar (27) both ends are fixed with the second straight pin (26), the second straight pin (26) with fixed block
The second chute (25) opened up is slidably matched, and Deironing mechanism (8) is arranged above metal collection frame (7) inner chamber, and the metal is received
Collection frame (7) both sides are provided with passage (6), and the first pulverization roller (3) and the second pulverization roller (4), the first pulverization roller are provided with below passage (6)
(3) it is arranged side by side with the second pulverization roller (4), is fixed with baffle plate (21) on the inside of the second pulverization roller (4), the first pulverization roller (3) and the
Refuse collection frame (2) is provided with below two pulverization rollers (4), refuse collection frame (2) is fixed on casing (1) bottom.
2. efficient pulverizing device is used in building waste recovery according to claim 1, it is characterised in that the stationary crushing plate
(17) two side is respectively and fixedly provided with the first crushing teeth.
3. efficient pulverizing device is used in building waste recovery according to claim 1, it is characterised in that the movable crushing shell
(15) it is fixed with the second crushing teeth close to the side of stationary crushing plate (17).
4. efficient pulverizing device is used in building waste recovery according to claim 1, it is characterised in that the disk (14) sets
It is placed in movable crushing shell (15) rear.
5. efficient pulverizing device is used in building waste recovery according to claim 1, it is characterised in that the motor (10) is logical
Mounting seat is crossed to be connected with casing (1).
6. efficient pulverizing device is used in building waste recovery according to claim 1, it is characterised in that first pulverization roller
(4) top is provided with arc (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695284.4A CN107350004A (en) | 2017-08-15 | 2017-08-15 | Efficient pulverizing device is used in a kind of building waste recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710695284.4A CN107350004A (en) | 2017-08-15 | 2017-08-15 | Efficient pulverizing device is used in a kind of building waste recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107350004A true CN107350004A (en) | 2017-11-17 |
Family
ID=60287463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710695284.4A Withdrawn CN107350004A (en) | 2017-08-15 | 2017-08-15 | Efficient pulverizing device is used in a kind of building waste recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107350004A (en) |
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-
2017
- 2017-08-15 CN CN201710695284.4A patent/CN107350004A/en not_active Withdrawn
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Application publication date: 20171117 |