CN208943719U - A kind of air box impulse soot cleaning system for micropore film dust-remover - Google Patents
A kind of air box impulse soot cleaning system for micropore film dust-remover Download PDFInfo
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- CN208943719U CN208943719U CN201821541987.8U CN201821541987U CN208943719U CN 208943719 U CN208943719 U CN 208943719U CN 201821541987 U CN201821541987 U CN 201821541987U CN 208943719 U CN208943719 U CN 208943719U
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- 238000004140 cleaning Methods 0.000 title claims abstract description 24
- 239000004071 soot Substances 0.000 title claims description 14
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 238000007664 blowing Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000004888 barrier function Effects 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 239000012982 microporous membrane Substances 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 239000000706 filtrate Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000010926 purge Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005453 pelletization Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
本实用新型公开了一种用于微孔膜除尘器的气箱脉冲清灰系统，包括滤料室，滤料室的顶部设置有净气室，底部设置有灰斗，滤料室和净气室之间通过花板隔离，并且花板的表面开有若干气孔，花板底面位于气孔处安装固定有板式微孔膜滤料，净气室的一侧设置有脉冲喷吹机构，另一侧设有出气管道，灰斗的上端侧壁设有进气管道。本实用新型采用气箱脉冲清灰方式，增强了微孔膜滤料的清灰强度，使得清灰管路在整个微孔膜滤料中的作用力较均匀，清灰效果好，消除了粉尘的二次吸附，降低了滤料的过滤负荷，有利于除尘器的稳定运行。
The utility model discloses an air box pulse ash cleaning system for a microporous membrane dust collector. The chambers are separated by a flower plate, and the surface of the flower plate is provided with a number of air holes. The bottom surface of the flower plate is located at the air hole and fixed with a plate-type microporous membrane filter material. One side of the clean air chamber is provided with a pulse blowing mechanism, and the other side An air outlet pipe is provided, and an air inlet pipe is arranged on the upper end side wall of the ash hopper. The utility model adopts the air box pulse cleaning method to enhance the cleaning strength of the microporous membrane filter material, so that the action force of the cleaning pipeline in the whole microporous membrane filter material is relatively uniform, the cleaning effect is good, and the dust is eliminated. The secondary adsorption reduces the filtration load of the filter material, which is beneficial to the stable operation of the dust collector.
Description
Technical field
The utility model belongs to industrial dedusting apparatus field, is related to a kind of air box impulse deashing for micropore film dust-remover
System.
Background technique
In recent years, as industrialization aggravates, vehicle guaranteeding organic quantity increases, the quickening of urban construction paces, and urban air is dirty
Dye problem rapidly becomes the focus of people.China is increasingly stringenter the emission request of pollutant at present, such as ecological, environmental protective portion
In May, 2018 requires all production works of iron and steel enterprise in " iron and steel enterprise's minimum discharge retrofit work scheme (exposure draft) "
Sequence (iron content ore mining choosing, stock yard, sintering, pelletizing, coking, ironmaking, steel-making, steel rolling etc. and bulk material Product transport) should all
Reach 10mg/m3Minimum discharge it is horizontal.And can the quality of deashing be directly related to deduster and well run, it is therefore desirable to
Dust pelletizing system deashing property is created and is transformed, to meet national requirements.
The filter bag of conventional bag deduster is using weaving filter cloth or non-woven felt, and shape is divided into flat bag or round bag
Filter bag filtrate is using cotton fiber, wool fibre, synthetic fibers and glass fibre etc., although the filter bag of traditional sack cleaner can
With guarantee it is granular material discharged reach standard, but because of mine particulate matter water content height, commonly there is moisture condensation, viscous in filter bag in use
Bag, phenomena such as deashing is difficult, cause that life of bag filter is short, live dust sucting point is difficult to ensure dust suction requirement.In order to cause the device to
Meet high humidity environment dust removal requirement, filtrate is improved, the core filtering material using microporous barrier as equipment, micropore
Film filtering material hydrophobicity is good, porosity is high, intensity is big, long service life and installation and replacement are very convenient.Based on this, mine system
Using advanced microporous barrier dust-extraction unit.
Currently, mine system using microporous barrier dust-extraction unit purge mode or mechanical vibrator by the way of, work as micropore
Film surface dust accumulation is fallen off, high frequency vibration dust-cleaning is endless to certain thickness by the time-controlled high frequency electric motor of shaker rapping of PLC
It is apt to and is damaged to a certain extent filtrate influence its service life, deashing is not thorough, is insufficient for high wet dust, according to mesh
Before " iron and steel enterprise's minimum discharge retrofit work scheme (exposure draft) " standard, it is difficult to meet the horizontal 10mg/ of minimum discharge
m3Emission request.In addition, if run under the premise of so that it is met high-efficiency low-resistance, and broader industrial circle is adapted to,
Also need deeper into research, and other purge mode has reverse gas cleaning mode, and this purge mode uses woven cloth mostly
The viscous class filtrate of filtering can also be used for the dust for being easier to fall clearly in filtrate such as 729 filter clothes.Reverse gas cleaning mode is more clear than vibrating
Grey mode wants small to the damaging action of filter cloth, but the effect of its deashing is weaker；For pulse jetting deashing mode, in its deashing
In a flash, when high speed jet-stream wind passes through filter bag top, it can induce the air times over injection tolerance, blow to filtrate together
Inside forms air wave, and filtrate is made to generate expansion and impact vibration sharply from top to bottom, generates the work of very strong clear powder falling dirt
With.Pulse period is adjustable, and generally 1 minute to a few minutes.Pulse dust cleaning effect is stronger, and ash-removal effect is preferable, can be improved
Filtration velocity.Its intensity and frequency be all it is adjustable, can equally obtain good deashing using preferable blowing device
Effect.For the design feature of excellent micropore film filtering material itself, the filtrate of production is mostly framework, the blowing of action of low-voltage pulse nozzle
The method of deashing is not appropriate for, and air box impulse ash removal method is relatively suitble to this structure.Air-tank type pulse dust collector deashing device
Injection tube and injector are not set, structure is simple, convenient for changing bag；Pulse valve quantity is few, and maintenance load is small.
The utility model patent of Chinese Patent Application No. 201720022989.5 discloses a kind of applied to efficiently damp proof super
The soot cleaning system of net deduster, the utility model rinse filter by three kinds of deashing device action of low-voltage pulse blowings, mechanical vibrator and water
The combination of film carries out deashing, realizes the purge mode for being suitable for efficient damp proof ultra-purifying dust collector, solves mine dedusting
Problem.Structure is complicated for the deduster, and operating process is cumbersome and to expend capital larger, although can be good at solving the problems, such as,
But the problem for causing cost too big does not account for.
The utility model patent of Chinese Patent Application No. 201510752861.X discloses a kind of for the micro- of high humidity environment
Composite filtering film is covered on board-like filter element by the filtrate component constituted by hole film dust-remover, the utility model patent
On, have filter area big, occupied area is saved, the characteristics of high dust collection efficiency；Composite filtering film water repellency is good, realizes and removes
Requirement of the dirt device in high humidity dust pelletizing system environment.The deduster uses mechanical rapping cleaning dust, causes deashing halfway
Problem, for a long time in this way, causing ash-removal effect poor, efficiency of dust collection is low, is difficult to meet national relevant particles object discharge standard.
Chinese Patent Application No. is that the utility model patent of 201410082161.X discloses plate and frame PTFE film deduster,
The utility model patent is by being applied to plate and frame module for PTFE microporous membrane material, and with high dust collection efficiency, deashing is easy,
The advantages that corrosion-resistant, high temperature resistant, the cycle of operation is long, and filter area is big and treating capacity is big.But the utility model patent only mentions
Go out plate and frame PTFE film to apply in deduster, is not discussed in detail the method for operation for introducing removing dust and clearing ash system, it is right
Guidance is not played the role of in the research of the soot cleaning system of micropore film dust-remover, proposes one kind based on this utility model patent
Air box impulse soot cleaning system for micropore film dust-remover.
Utility model content
The purpose of this utility model is to provide a kind of air box impulse soot cleaning systems for micropore film dust-remover, can be most
The ash-removal effect and its efficiency of dust collection that micropore film dust-remover is improved in big degree, can achieve the service life of micropore film filtering material 2 years
More than, the purge mode for solving existing micropore film dust-remover mechanical vibrator causes deashing not perfect, and efficiency of dust collection is low and right
The problem of service life of filtrate is damaged to a certain extent.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of air box impulse soot cleaning system for micropore film dust-remover, including filter media room are provided at the top of filter media room
Air-purifying chamber, bottom are provided with ash bucket, are isolated between filter media room and air-purifying chamber by card, and if the surface of card be provided with dry gas
Hole, card bottom surface, which is located at stomata, is mounted with board-like micropore film filtering material, and the side of air-purifying chamber is provided with pulse jet mechanism,
The other side is equipped with outlet pipe, and the upper end side wall of ash bucket is equipped with admission line；
Pulse jet mechanism includes pulse blowing pipe, and one end of pulse blowing pipe is equipped with blowing mouth, and blowing mouth is located at net gas
In room, the other end is equipped with electromagnetic impulse valve, and electromagnetic impulse valve connects compressed air by flanged joint pulse gas bag, pulse gas bag
System, compressed air system connect pulse control instrument.
Further, every group of board-like micropore film filtering material is made of 5-40 microporous barrier monolithic filter plate, and microporous barrier is PTFE film,
By polyester and non-woven fabric compounded preparation.
Further, the side wall of filter media room is mounted with A-frame, and pulse gas bag is mounted on A-frame.
Further, it is mounted on static pressure rings in admission line and outlet pipe, while admission line and outlet pipe
Side wall is equipped with parameter measurement mouth, can be in air box impulse micropore film dust-remover admission line and escape pipe by parameter measurement mouth
Road carries out pressure difference sampling.
The utility model has the beneficial effects that
The utility model uses air box impulse purge mode, the deashing intensity of micropore film filtering material is enhanced, so that deashing pipe
Active force of the road in entire micropore film filtering material is more uniform, and ash-removal effect is good, eliminates the second adsorption of dust.Reduce filtrate
Filtering load, be conducive to the stable operation of deduster.
The utility model has better advantage on ash-removal effect, can improve micropore film dust-remover to the full extent
Ash-removal effect improves efficiency of dust collection, solves the problems, such as that the clear mode of high frequency machinery rapping influences life-span of filtering material, can make micropore membrane filtration
The service life of material can achieve 2 years or more.
The utility model proposes air box impulse purge mode for existing deduster, and to its deashing
Parameter is set, and not only meets national dust emission standard, but also realize deduster in high humidity dust pelletizing system environment
The engineering field of requirement, application is broader.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the utility model air box impulse soot cleaning system structural schematic diagram；
Fig. 2 is the utility model impulse radiation schematic diagram.
Specific embodiment
A kind of air box impulse soot cleaning system for micropore film dust-remover, as depicted in figs. 1 and 2, including filter media room 1, filter
The top of material room 1 is provided with air-purifying chamber 2, and bottom is provided with ash bucket 3, and filter media room 1 is mounted on bottom platform 9, filter media room 1 and net gas
It is isolated between room 2 by card 4, and the surface of card 4 is provided with several stomatas 41,4 bottom surface of card, which is located at stomata 41, installs
It is fixed with board-like micropore film filtering material 5, every group of board-like micropore film filtering material 5 is made of 5-40 microporous barrier monolithic filter plate, each micropore
The size of film monolithic filter plate is rectangular according to specific size production, and microporous barrier is the PTFE film being suitably applied in high humidity environment,
By polyester and non-woven fabric compounded, the side of air-purifying chamber 2 is provided with pulse jet mechanism 6, and the other side is equipped with outlet pipe 21, ash bucket
3 upper end side wall is equipped with admission line 31；Gas to be filtered enters in filter media room 1 by admission line 31, then by board-like
Micropore film filtering material 5 enters inside board-like micropore film filtering material 5 after filtering, and obtains clean gas, and clean gas is from 4 bottom surface of card
Stomata 41 at enter in air-purifying chamber 2, then by outlet pipe 21 be discharged；
Pulse jet mechanism 6 includes pulse blowing pipe 61, and one end of pulse blowing pipe 61 is equipped with blowing mouth 62, is blown mouth 62
In air-purifying chamber 2, the other end is equipped with electromagnetic impulse valve 63, and electromagnetic impulse valve 63 passes through flanged joint pulse gas bag 64, pulse
Gas bag 64 connects compressed air system 65, and compressed air system 65 connects pulse control instrument 66, wherein the side wall installation of filter media room 1
It is fixed with A-frame 11, pulse gas bag 64 is mounted on A-frame 11；When deashing is run, electromagnetic impulse valve 63 is opened, pressure
Compressed air is sent in pulse gas bag 64 by contracting air system 65, sprays high pressure gas by blowing mouth 62 through pulse blowing pipe 61
Body, high pressure gas expand in air-purifying chamber 2, then enter in board-like micropore film filtering material 5 through air passing hole 41, in board-like micropore membrane filtration
Back draught is formed in material 5, the dust layer being attached on filtrate is removed, realizes the purpose of efficient deashing；
Static pressure rings 7 are mounted in admission line 31 and outlet pipe 21, static pressure everywhere can be balanced by static pressure rings 7
Power makes in pipeline stress more evenly, while the side wall of admission line 31 and outlet pipe 21 is equipped with parameter measurement mouth 8, passes through
Parameter measurement mouth 8 can carry out pressure difference sampling in air box impulse micropore film dust-remover admission line 31 and outlet pipe 21, when micro-
(being usually set to 1500pa) starts deashing when the resistance of hole film dust-remover reaches upper limit value.
The specific work process of the air box impulse soot cleaning system is as follows:
The first step, gas tank filter gas: gas to be filtered enters in filter media room 1 by admission line 31, then passes through plate
Type micro-hole film filtering material 5 enters inside board-like micropore film filtering material 5 after filtering, and obtains clean gas, and clean gas is from 4 bottom of card
Enter in air-purifying chamber 2 at the stomata 41 in face, is then discharged by outlet pipe 21；
Second step, gas tank deashing: can be in 31 He of air box impulse micropore film dust-remover admission line by parameter measurement mouth 8
Outlet pipe 21 carries out pressure difference sampling, and when the resistance of micropore film dust-remover reaches upper limit value, (being usually set to 1500pa) starts
Deashing, electromagnetic impulse valve 63 is opened at this time, and compressed air is sent in pulse gas bag 64, sprays through pulse by compressed air system 65
Blowpipe 61 sprays high pressure gas by blowing mouth 62, and high pressure gas expands in air-purifying chamber 2, then enters through air passing hole 41 board-like micro-
In hole film filtering material 5, back draught is formed in board-like micropore film filtering material 5, the dust layer being attached on filtrate is removed, reaches clear
The purpose of ash.
In the present invention, in order to reach good ash-removal effect, the gas flow Q of jet flow section will with pass through micropore
The gas flow Q' of film filtering material is equal, wherein jet flow section gas flow Q:
Q'=n × (a+b) × 2 × h × u (2)
C in formula: turbulence factor, c=0.076；d0: spout aperture；S: the distance of spout to jet flow section；Q0: the stream of spout
Amount；N: filter bag number；A: filter bag is long；B: filter bag is wide；H: filter bag is high；U: blowback wind speed.The flow Q of spout0Calculation formula are as follows:
In formula: ξ is the discharge coefficient of spout section, d0For nozzle diameter
Can to sum up obtain spout to jet flow section distance s and nozzle diameter d0Relational expression be
Nozzle diameter d0It can be obtained according to the size of filter area by type selecting, in nozzle diameter d0Basis in known situation
It is above-mentioned it is various obtain spout to jet flow section distance s, in the case where the distance s of spout to jet area is certain, Ke Yigen
The equivalent diameter D of jet flow section is obtained according to formula (5), to design the size of air-purifying chamber.
D=d0+cs (5)
In above-mentioned expression formula (1), (2), (3), (4), each parameter is specific corresponding as shown in Figure 2 in (5).
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (4)
1. a kind of air box impulse soot cleaning system for micropore film dust-remover, which is characterized in that including filter media room (1), filter media room
(1) it is provided at the top of air-purifying chamber (2), bottom is provided with ash bucket (3), passes through card between filter media room (1) and air-purifying chamber (2)
(4) it is isolated, and the surface of card (4) is provided with several stomatas (41), card (4) bottom surface, which is located at stomata (41), to be mounted with
Board-like micropore film filtering material (5), the side of air-purifying chamber (2) are provided with pulse jet mechanism (6), and the other side is equipped with outlet pipe
(21), the upper end side wall of ash bucket (3) is equipped with admission line (31)；
Pulse jet mechanism (6) includes pulse blowing pipe (61), and one end of pulse blowing pipe (61) is equipped with blowing mouth (62), blowing
Mouth (62) is located in air-purifying chamber (2), and the other end is equipped with electromagnetic impulse valve (63), and electromagnetic impulse valve (63) passes through flanged joint pulse
Gas bag (64), pulse gas bag (64) connect compressed air system (65), and compressed air system (65) connects pulse control instrument (66).
2. a kind of air box impulse soot cleaning system for micropore film dust-remover according to claim 1, which is characterized in that every
The board-like micropore film filtering material (5) of group is made of 5-40 microporous barrier monolithic filter plate, and microporous barrier is PTFE film, the PTFE film by polyester with
Non-woven fabric compounded preparation.
3. a kind of air box impulse soot cleaning system for micropore film dust-remover according to claim 1, which is characterized in that filter
The side wall of material room (1) is mounted with A-frame (11), and pulse gas bag (64) is mounted on A-frame (11).
4. a kind of air box impulse soot cleaning system for micropore film dust-remover according to claim 1, which is characterized in that into
It is mounted on static pressure rings (7) in feed channel (31) and outlet pipe (21), while admission line (31) and outlet pipe (21)
Side wall is equipped with parameter measurement mouth (8), by parameter measurement mouth (8) in air box impulse micropore film dust-remover admission line (31) and
Outlet pipe (21) carries out pressure difference sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821541987.8U CN208943719U (en) | 2018-09-20 | 2018-09-20 | A kind of air box impulse soot cleaning system for micropore film dust-remover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821541987.8U CN208943719U (en) | 2018-09-20 | 2018-09-20 | A kind of air box impulse soot cleaning system for micropore film dust-remover |
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| CN208943719U true CN208943719U (en) | 2019-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108993057A (en) * | 2018-09-20 | 2018-12-14 | 安徽欣创节能环保科技股份有限公司 | A kind of air box impulse soot cleaning system for micropore film dust-remover |
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2018
- 2018-09-20 CN CN201821541987.8U patent/CN208943719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108993057A (en) * | 2018-09-20 | 2018-12-14 | 安徽欣创节能环保科技股份有限公司 | A kind of air box impulse soot cleaning system for micropore film dust-remover |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Jia Inventor after: Chen Lumin Inventor after: Xia Yongjun Inventor after: Qian Fuping Inventor after: Lu Jinli Inventor after: Xia Xiaohu Inventor after: Zhang Yueheng Inventor after: Yang Hong Inventor after: Li Feng Inventor before: Hu Jia Inventor before: Chen Lumin Inventor before: Xia Yongjun Inventor before: Qian Fuping Inventor before: Lu Jinli Inventor before: Xia Xiaohu Inventor before: Zhang Yueheng Inventor before: Yang Hong Inventor before: Li Feng |
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| CB03 | Change of inventor or designer information |