CN207928915U - A kind of wooden dust depression dust-removing system - Google Patents
A kind of wooden dust depression dust-removing system Download PDFInfo
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- CN207928915U CN207928915U CN201721409486.XU CN201721409486U CN207928915U CN 207928915 U CN207928915 U CN 207928915U CN 201721409486 U CN201721409486 U CN 201721409486U CN 207928915 U CN207928915 U CN 207928915U
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Abstract
The utility model discloses a kind of wooden dust depression dust-removing systems, including exhaust chamber, the lower surface of the exhaust chamber is fixedly connected with exhaust tube, the rear end surface of the exhaust chamber is fixedly connected with spark catcher by pipeline, the rear end surface of the spark catcher is fixedly connected on extinguishing device by pipeline, the rear end surface of the extinguishing device is fixedly connected with flame proof valve by pipeline, the rear end surface of the flame proof valve is fixedly connected with dust-extraction unit by pipeline, and the upper end face of the dust-extraction unit is fixedly connected with blower fan apparatus by pipeline.The wooden dust depression dust-removing system forms negative pressure by blower fan apparatus to pipeline exhausting, dust can be adsorbed, and pass through sparker and extinguishing device, there is the dedusting being exactly combined by cartridge filter and water spray to place again, ensure the high efficiency and convenience of dedusting, the convenience used and safety can be greatly improved in this way, improves dust removing effects, ensure working efficiency.
Description
Technical field
The utility model is related to dust pelletizing system technical field, specially a kind of wooden dust depression dust-removing system.
Background technology
During the processing and manufacturing of the products such as timber, metal, grain or intermediate material, inevitably it will produce a large amount of
Dust causes working environment severe, and when dust concentration is larger, is easy to happen explosion accident, and in order to ensure working environment
Safety and worker health, need to be dusted processing to processing workshop, but existing dust pelletizing system is mostly letter
Single carry out dust-filtering, not only dust removing effects are bad, if it cannot be guaranteed that control dust concentration, the safety of processing site
It cannot be guaranteed, and can not work continuously, need periodically to be cleared up after long-time use, and filtered dust pile
Product be easy to cause dust surge in demolition and maintenance and forms secondary pollution, and effect is undesirable, and dust is in extraction process
It is easy to generate spark because of rubbing action, once generating spark, then may more explode, cause bigger safety
Hidden danger.
Utility model content
The purpose of this utility model is to provide a kind of wooden dust depression dust-removing systems, reach dedusting by subnormal ambient
Purpose, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions：A kind of wooden dust depression dust-removing system, packet
Exhaust chamber is included, the lower surface of the exhaust chamber is fixedly connected with exhaust tube, and the rear end surface of the exhaust chamber is fixed by pipeline
It is connected with spark catcher, the rear end surface of the spark catcher is fixedly connected on extinguishing device, the fire extinguishing by pipeline
The rear end surface of device is fixedly connected with flame proof valve by pipeline, and the rear end surface of the flame proof valve is fixedly connected with by pipeline
The upper end face of dust-extraction unit, the dust-extraction unit is fixedly connected with blower fan apparatus by pipeline.
Preferably, the spark catcher includes catch and flue-dust retainer, and the upper surface of the flue-dust retainer is fixedly connected on
The both side surface of the lower surface of catch, the catch is respectively equipped with air inlet and gas outlet, the private side of the catch
Face is fixedly connected with braced frame, and the upper surface of the braced frame, which replaces, is fixedly connected with louvre blade, under the flue-dust retainer
Ash hole is equipped at centre of surface, the lower surface both sides of the flue-dust retainer are equipped with guide rod.
Preferably, the internal slide of the ash hole is connected with seal head, and the upper surface of the seal head is fixedly connected
The outer surface sliding sleeve of connecting rod, the connecting rod has Packing spring, and the upper surface of the connecting rod is fixedly connected with isolation
The upper surface of plate, the isolation board is equipped with taper surface.
Preferably, the lower surface of the seal head is fixedly connected with baffle, and the two sides of the baffle are slided by vent disk
The dynamic outer surface for being connected to guide rod, the both ends outer surface of the baffle is fixedly connected with limit supporting plate.
Preferably, the extinguishing device includes fire extinction pipeline and blending bin, and the upper surface of the blending bin is fixedly connected on
The inner upper end of the lower surface of fire extinction pipeline, the fire extinction pipeline is fixedly connected with spark detection device, the fire extinction pipeline
Lower surface both sides are fixedly connected with exhaust pipe, and the lower surface of the exhaust pipe is threaded with plug, the upper table of the blending bin
Face is fixedly connected on the interior surface of fire extinction pipeline by gas tip, and the lower surface of the blending bin is fixed by solenoid valve to be connected
It is connected to air accumulator.
Preferably, the dust-extraction unit includes Rose Box and water tank, and the water tank is fixedly connected on the lower surface of Rose Box,
The front-end surface lower end of the Rose Box is equipped with filtered air inlet, is rotated and is connected by annular groove at the inside center of the Rose Box
It is connected to rotating box, the inside of the rotating box is fixedly connected with cartridge filter, and the upper surface of the cartridge filter is equipped with filtering gas outlet,
The lower surface of the cartridge filter is rotationally connected with the inner bottom surface of Rose Box, the lower surface both sides of the support plate by support plate
It is fixedly connected with scraper plate by corner rods, the scraper plate is slidably connected to the inner side of water tank.
Preferably, the front side surface of the water tank is equipped with filler pipe, and the inner bottom surface of the water tank is fixedly connected with blowdown
Pipe and overflow pipe, the rear side surface upper end of the water tank are fixedly connected on the inlet of water pump by drinking-water pipe, the water pump
Exit is fixedly connected on the inner upper end of Rose Box by sprinkler head.
Preferably, the blower fan apparatus includes shell and fire-proof motor, and the fire-proof motor is fixedly connected by mounting bracket
At the inside center of shell, the fire-proof motor is fixedly connected with blade by axis, and the front-end surface of the shell, which is equipped with, to be connected
Joint chair, the connecting seat are internally provided with ventilation opening, and the ventilation opening is internally provided with opening sliding slot, the interior of sliding slot that be open
Portion slidably connects screen pack, and the upper surface of the screen pack is fixedly connected on the upper surface of connecting seat by briquetting.
Compared with prior art, the utility model has the beneficial effects that：The wooden dust depression dust-removing system passes through wind turbine
Device forms negative pressure to pipeline exhausting, can be adsorbed to dust, and by sparker and extinguishing device, can be so as to
It avoids catching fire while clearing up spark dust, prevents the generation of explosion accident, improve safety, then it is exactly to pass through cartridge filter to have
It is placed with the dedusting that water spray is combined, ensures the high efficiency and convenience of dedusting, avoid secondary pollution, can greatly improve in this way
The convenience used and safety improve dust removing effects, ensure working efficiency.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the sparker structural schematic diagram of the utility model；
Fig. 3 is the seal head schematic cross-section of the utility model；
Fig. 4 is the extinguishing device structural schematic diagram of the utility model；
Fig. 5 is the dust-extraction unit structural schematic diagram of the utility model；
Fig. 6 is the blower fan apparatus structural schematic diagram of the utility model.
In figure：1 exhaust chamber, 11 exhaust tubes, 2 sparkers, 20 catch, 21 air inlets, 22 gas outlets, 23 support frames
Frame, 24 louvre blades, 25 flue-dust retainers, 26 ash holes, 27 guide rods, 30 seal heads, 31 connecting rods, 32 Packing springs, 33 isolation
Plate, 34 taper surfaces, 35 baffles, 36 vent disks, 37 limit supporting plates, 4 extinguishing devices, 40 fire extinction pipelines, 41 spark detection devices,
42 explosion-proof valves, 43 exhaust pipes, 44 plugs, 45 blending bins, 46 gas tips, 47 solenoid valves, 48 air accumulators, 5 dust-extraction units, 50
Rose Box, 51 filtered air inlets, 52 rotating box, 53 cartridge filters, 54 filtering gas outlets, 55 support plates, 56 corner rods, 57 scraper plates,
60 water tanks, 61 filler pipes, 62 blow-off pipes, 63 overflow pipes, 64 drinking-water pipes, 65 water pumps, 66 sprinkler heads, 7 blower fan apparatus, 70 shells,
71 fire-proof motors, 72 blades, 73 connecting seats, 74 ventilation openings, 75 opening sliding slots, 76 screen packs, 77 briquettings.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
- 6 are please referred to Fig.1, the utility model provides a kind of technical solution：A kind of wooden dust depression dust-removing system, including
The lower surface of exhaust chamber 1, exhaust chamber 1 is fixedly connected with exhaust tube 11, and the rear end surface of exhaust chamber 1 is fixedly connected with by pipeline
The rear end surface of spark catcher 2, spark catcher 2 is fixedly connected on extinguishing device 4, the rear end of extinguishing device 4 by pipeline
Surface is fixedly connected with flame proof valve 42 by pipeline, and the rear end surface of flame proof valve 42 is fixedly connected with dust-extraction unit 5 by pipeline,
The upper end face of dust-extraction unit 5 is fixedly connected with blower fan apparatus 7 by pipeline, and spark catcher 2 includes catch 20 sum aggregate ash
Bucket 25, the upper surface of flue-dust retainer 25 are fixedly connected on the lower surface of catch 20, the both side surface of catch 20 be respectively equipped with into
The inner side of gas port 21 and gas outlet 22, catch 20 is fixedly connected with braced frame 23, and the upper surface of braced frame 23 is handed over
For louvre blade 24 is fixedly connected with, spark can be formed and hit and extinguish while ventilative, avoid that subsequent pipeline is caused to rise
Fire ensures safety, and ash hole 26 is equipped at the lower surface center of flue-dust retainer 25, and the lower surface both sides of flue-dust retainer 25, which are equipped with, to be oriented to
The internal slide of bar 27, ash hole 26 is connected with seal head 30, and the upper surface of seal head 30 is fixedly connected with connecting rod 31, even
The outer surface sliding sleeve of extension bar 31 has Packing spring 32, and the upper surface of connecting rod 31 is fixedly connected with isolation board 33, isolation board
33 upper surface is equipped with taper surface 34, can keep closed while ash disposal, ensure the stability of dust pelletizing system, seal head 30
Lower surface be fixedly connected with baffle 35, the two sides of baffle 35 are slidably connected to the appearance of guide rod 27 by vent disk 36
The both ends outer surface in face, baffle 35 is fixedly connected with limit supporting plate 37, and extinguishing device 4 includes fire extinction pipeline 40 and blending bin 45,
The upper surface of blending bin 45 is fixedly connected on the lower surface of fire extinction pipeline 40, and the inner upper end of fire extinction pipeline 40 is fixedly connected with fire
Flower detection device 41, controller is connected in series to by circuit, and the lower surface both sides of fire extinction pipeline 40 are fixedly connected with exhaust pipe 43, row
The lower surface of tracheae 43 is threaded with plug 44, and the upper surface of blending bin 45 is fixedly connected on fire extinguishing tube by gas tip 46
The interior surface in road 40, the lower surface of blending bin 45 are fixedly connected with air accumulator 48 by solenoid valve 47, air accumulator 48 have it is multiple,
Storing carbon dioxide, heptafluoro-propane, the fire extinguishings gas such as nitrogen respectively, solenoid valve 47 are gate valve, and model KEYSTONE, and
And controller is connected in series to by circuit, dust-extraction unit 5 includes Rose Box 50 and water tank 60, and water tank 60 is fixedly connected on Rose Box 50
Lower surface, the front-end surface lower end of Rose Box 50 is equipped with filtered air inlet 51, passes through annular at the inside center of Rose Box 50
Slot is rotatably connected to rotating box 52, and the inside of rotating box 52 is fixedly connected with cartridge filter 53, and the upper surface of cartridge filter 53 was equipped with
Gas port 54 is filtered out, the lower surface of cartridge filter 53 is rotationally connected with the inner bottom surface of Rose Box 50, support plate 55 by support plate 55
Lower surface both sides be fixedly connected with scraper plate 57 by corner rods 56, scraper plate 57 is slidably connected to the inner side of water tank 60, water
The front side surface of case 60 is equipped with filler pipe 61, and the inner bottom surface of water tank 60 is fixedly connected with blow-off pipe 62 and overflow pipe 63, water
The rear side surface upper end of case 60 is fixedly connected on the inlet of water pump 65, the model of water pump 65 by drinking-water pipe 64
2.3PP200-WFB, and controller and working power are connected in series to by circuit, the exit of water pump 65 is fixed by sprinkler head 66
It is connected to the inner upper end of Rose Box 50, humidification collection on the one hand is carried out to dust, avoids secondary pollution, it on the other hand can be right
Cartridge filter 53 is rinsed, and improves filter effect and service life, blower fan apparatus 7 includes shell 70 and fire-proof motor 71, explosion-proof
The model DSB-IM3 of motor 71, and be connected in series on controller and working power by circuit, fire-proof motor 71 passes through installation
Frame is fixedly connected at the inside center of shell 70, and fire-proof motor 71 is fixedly connected with blade 72, the front end of shell 70 by axis
Surface is equipped with connecting seat 73, and connecting seat 73 is internally provided with ventilation opening 74, and ventilation opening 74 is internally provided with opening sliding slot 75, opening
The internal slide of sliding slot 75 is connected with screen pack 76, and the upper surface of screen pack 76 is fixedly connected on connecting seat by briquetting 77
73 upper surface is conveniently replaceable screen pack 76, improves the convenience used and stability.
The utility model is in the specific implementation：Exhaust tube 11 is fixedly installed to inside processing workshop when use, is started anti-
Quick-fried motor 71 is rotated with blade 72, can be carried out exhausting, can also be formed negative pressure, such processing cart inside cleaning shaft
The interior air for being mixed with dust is extracted exhaust chamber 1, then enters catch 20 through piping, and air can penetrate blinds
The gap of piece 24, since gap is inconsistent with wind direction, spark will be hit and extinguish and drop into inside flue-dust retainer 25, when
It when dust aggregation is excessive, can will be pulled under 35 line of baffle, seal head 30 is detached from ash hole 26, and vent disk 36 is detached from guide rod 31
, isolation board 33 agrees with tapered slope, can be sealed on dust top, then flap shutter 35, can will limit supporting plate
37 are stuck in 27 lower section of guide rod, fall be collected from ash hole 26 convenient for dust in this way, more convenient stabilization, and air continues
It is entered inside fire extinction pipeline 40 by pipeline, after spark detection device 41 detects spark, closes flame proof valve 42, solenoid valve 47
It opens, multiple gases are entered inside blending bin 45 and mixed, then enter in fire extinction pipeline 40 and go out from gas tip 46
Fire, efficient, extinguishing property is stablized, and when normal dedusting, the air with dust enters Rose Box from filtered air inlet 51
Inside 50, filtered from 53 outside of cartridge filter into inside, pure air is discharged from filtering gas outlet 54, and dust stays in filtering
Inside case 53, it at this moment can start water pump 65 and draw water, be rinsed from water spray of sprinkler head 66 etc., dust can be collected into water tank
Inside 60, while cartridge filter 53 is rotated by rotating box 52, cartridge filter 53 can be rinsed, while being stirred by scraper plate 57
Dust avoids depositing, and convenient for being discharged from blow-off pipe 62, avoids air secondary from polluting, while the screen pack by being slidably connected
76, secondary filter is on the one hand carried out, dust is avoided to damage fire-proof motor 71, is on the other hand convenient for replacing in time, improve
The convenience used and safety.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (8)
1. a kind of wooden dust depression dust-removing system, including exhaust chamber (1), it is characterised in that：The lower surface of the exhaust chamber (1)
It is fixedly connected with exhaust tube (11), the rear end surface of the exhaust chamber (1) is fixedly connected with spark catcher (2) by pipeline,
The rear end surface of the spark catcher (2) is fixedly connected on extinguishing device (4) by pipeline, after the extinguishing device (4)
End surfaces are fixedly connected with flame proof valve (42) by pipeline, and the rear end surface of the flame proof valve (42) is fixedly connected with by pipeline
The upper end face of dust-extraction unit (5), the dust-extraction unit (5) is fixedly connected with blower fan apparatus (7) by pipeline.
2. a kind of wooden dust depression dust-removing system according to claim 1, it is characterised in that：The spark catcher
(2) include catch (20) and flue-dust retainer (25), the upper surface of the flue-dust retainer (25) is fixedly connected under catch (20)
The both side surface on surface, the catch (20) is respectively equipped with air inlet (21) and gas outlet (22), the catch (20)
Inner side is fixedly connected with braced frame (23), and the upper surface of the braced frame (23) is alternately fixedly connected with louvre blade
(24), ash hole (26) is equipped at the lower surface center of the flue-dust retainer (25), the lower surface both sides of the flue-dust retainer (25) are set
There is guide rod (27).
3. a kind of wooden dust depression dust-removing system according to claim 2, it is characterised in that：The ash hole (26)
Internal slide is connected with seal head (30), and the upper surface of the seal head (30) is fixedly connected with connecting rod (31), the connection
The outer surface sliding sleeve of bar (31) has Packing spring (32), and the upper surface of the connecting rod (31) is fixedly connected with isolation board
(33), the upper surface of the isolation board (33) is equipped with taper surface (34).
4. a kind of wooden dust depression dust-removing system according to claim 3, it is characterised in that：The seal head (30)
Lower surface is fixedly connected with baffle (35), and the two sides of the baffle (35) are slidably connected to guide rod by vent disk (36)
(27) the both ends outer surface of outer surface, the baffle (35) is fixedly connected with limit supporting plate (37).
5. a kind of wooden dust depression dust-removing system according to claim 1, it is characterised in that：The extinguishing device (4)
Including fire extinction pipeline (40) and blending bin (45), the upper surface of the blending bin (45) is fixedly connected under fire extinction pipeline (40)
The inner upper end on surface, the fire extinction pipeline (40) is fixedly connected with spark detection device (41), the fire extinction pipeline (40)
Lower surface both sides are fixedly connected with exhaust pipe (43), and the lower surface of the exhaust pipe (43) is threaded with plug (44), described
The upper surface of blending bin (45) is fixedly connected on the interior surface of fire extinction pipeline (40), the blending bin by gas tip (46)
(45) lower surface is fixedly connected with air accumulator (48) by solenoid valve (47).
6. a kind of wooden dust depression dust-removing system according to claim 1, it is characterised in that：The dust-extraction unit (5)
Including Rose Box (50) and water tank (60), the water tank (60) is fixedly connected on the lower surface of Rose Box (50), the Rose Box
(50) front-end surface lower end is equipped with filtered air inlet (51), is rotated by annular groove at the inside center of the Rose Box (50)
Be connected with rotating box (52), the inside of the rotating box (52) is fixedly connected with cartridge filter (53), the cartridge filter (53) it is upper
Surface is equipped with filtering gas outlet (54), and the lower surface of the cartridge filter (53) is rotationally connected with Rose Box by support plate (55)
(50) the lower surface both sides of inner bottom surface, the support plate (55) are fixedly connected with scraper plate (57), institute by corner rods (56)
State the inner side that scraper plate (57) is slidably connected to water tank (60).
7. a kind of wooden dust depression dust-removing system according to claim 6, it is characterised in that：Before the water tank (60)
Side surface is equipped with filler pipe (61), and the inner bottom surface of the water tank (60) is fixedly connected with blow-off pipe (62) and overflow pipe (63),
The rear side surface upper end of the water tank (60) is fixedly connected on the inlet of water pump (65), the water pump by drinking-water pipe (64)
(65) exit is fixedly connected on the inner upper end of Rose Box (50) by sprinkler head (66).
8. a kind of wooden dust depression dust-removing system according to claim 1, it is characterised in that：The blower fan apparatus (7)
Including shell (70) and fire-proof motor (71), the fire-proof motor (71) is fixedly connected on the inside of shell (70) by mounting bracket
At center, the fire-proof motor (71) is fixedly connected with blade (72) by axis, and the front-end surface of the shell (70), which is equipped with, to be connected
Joint chair (73), the connecting seat (73) are internally provided with ventilation opening (74), and the ventilation opening (74) is internally provided with opening sliding slot
(75), the internal slide of the opening sliding slot (75) is connected with screen pack (76), and the upper surface of the screen pack (76) is logical
Cross the upper surface that briquetting (77) is fixedly connected on connecting seat (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721409486.XU CN207928915U (en) | 2017-10-30 | 2017-10-30 | A kind of wooden dust depression dust-removing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721409486.XU CN207928915U (en) | 2017-10-30 | 2017-10-30 | A kind of wooden dust depression dust-removing system |
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| Publication Number | Publication Date |
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| CN207928915U true CN207928915U (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721409486.XU Active CN207928915U (en) | 2017-10-30 | 2017-10-30 | A kind of wooden dust depression dust-removing system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694258A (en) * | 2017-10-30 | 2018-02-16 | 安徽祥源科技股份有限公司 | A kind of wooden dust depression dust-removing system |
| CN112817393A (en) * | 2021-02-03 | 2021-05-18 | 东北石油大学 | Petroleum geology and geophysical figure processing device and using method thereof |
| CN113680793A (en) * | 2021-08-20 | 2021-11-23 | 邵宇 | Fish scale recycling and cleaning device |
| CN114522484A (en) * | 2022-04-22 | 2022-05-24 | 江苏鲁班环保科技有限公司 | Air adsorption and filtration device for road dust removal |
-
2017
- 2017-10-30 CN CN201721409486.XU patent/CN207928915U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694258A (en) * | 2017-10-30 | 2018-02-16 | 安徽祥源科技股份有限公司 | A kind of wooden dust depression dust-removing system |
| CN107694258B (en) * | 2017-10-30 | 2024-05-28 | 安徽祥源科技股份有限公司 | Wooden dust negative pressure dust pelletizing system |
| CN112817393A (en) * | 2021-02-03 | 2021-05-18 | 东北石油大学 | Petroleum geology and geophysical figure processing device and using method thereof |
| CN112817393B (en) * | 2021-02-03 | 2022-10-11 | 东北石油大学 | Petroleum geology and geophysical figure processing device and using method thereof |
| CN113680793A (en) * | 2021-08-20 | 2021-11-23 | 邵宇 | Fish scale recycling and cleaning device |
| CN114522484A (en) * | 2022-04-22 | 2022-05-24 | 江苏鲁班环保科技有限公司 | Air adsorption and filtration device for road dust removal |
| CN114522484B (en) * | 2022-04-22 | 2022-07-01 | 江苏鲁班环保科技有限公司 | Air adsorption and filtration device for road dust removal |
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| CB03 | Change of inventor or designer information |
Inventor after: Xu Xiaoguang Inventor after: Sun Jie Inventor after: Shu Subing Inventor after: Jiang Yanmin Inventor after: Ding Rui Inventor after: Zhang Wei Inventor after: Yao Baohui Inventor before: Xu Xiaoguang Inventor before: Sun Jie Inventor before: Shu Subing Inventor before: Jiang Yanmin Inventor before: Ding Rui Inventor before: Zhang Wei Inventor before: Yao Baohui |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Wei Inventor after: Xu Xiaoguang Inventor after: Sun Jie Inventor after: Shu Subing Inventor after: Jiang Yanmin Inventor after: Ding Rui Inventor after: Yao Baohui Inventor before: Xu Xiaoguang Inventor before: Sun Jie Inventor before: Shu Subing Inventor before: Jiang Yanmin Inventor before: Ding Rui Inventor before: Zhang Wei Inventor before: Yao Baohui |
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| CB03 | Change of inventor or designer information |