CN107676880A - A kind of air cleaning unit for building and its method of work - Google Patents
A kind of air cleaning unit for building and its method of work Download PDFInfo
- Publication number
- CN107676880A CN107676880A CN201710837664.7A CN201710837664A CN107676880A CN 107676880 A CN107676880 A CN 107676880A CN 201710837664 A CN201710837664 A CN 201710837664A CN 107676880 A CN107676880 A CN 107676880A
- Authority
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- China
- Prior art keywords
- box
- upper box
- guard
- filter
- cleaning module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/158—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using active carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to technical field of air purification, more particularly to a kind of air cleaning unit for building and its method of work, including：Upper cleaning module, lower cleaning module, blower fan；The guard is located at the top of upper box, and guard is connected with upper box by embedded mode；The ultraviolet lamp is arranged on the top of upper box by mosaic mode；The upper cleaning module is located at the inside of upper box, and upper cleaning module is connected with upper box by embedded mode；The clasp is located at the both sides of upper box；The both sides for snapping through the mode of being fixedly connected and being arranged on lower box；The upper box, lower box are connected by clasp with buckle with manner, and the junction of upper box and lower box is provided with seal washer.The present invention has purification efficiency high by the improvement in structure, and clean-up effect is obvious, the advantages of reducing pollution of the building dust to atmospheric environment, so as to effectively solve problem and shortage present in the existing apparatus proposed in background technology.
Description
Technical field
The present invention relates to technical field of air purification, more particularly to a kind of air cleaning unit for building and its work side
Method.
Background technology
With the rapid development of China's economy, building trade development is also very fast, in city and rural area, everywhere may be used
See construction site, and construction site can produce substantial amounts of dust in work progress, be directly discharged in environment, pollute air
Environment.
In building construction process, general removed by the way of watering and lowering dust produces dust in work progress, but should
Dedusting method is less efficient, can not remove the dust in gas totally, still also substantial amounts of dust emissions are right into air
Air is polluted, and the health of workmen is impacted, while watering and lowering dust can also waste substantial amounts of water, not enough section
Can environmental protection.
The content of the invention
It is an object of the invention to provide a kind of air cleaning unit for building and its method of work, to solve background technology
Middle proposition removed by the way of watering and lowering dust in work progress produce dust dedusting method it is less efficient, can not be by gas
Dust remove clean, still also substantial amounts of dust emissions pollute, to the body of workmen into air to air
Health impacts, while watering and lowering dust can also waste substantial amounts of water, the problem of inadequate energy-conserving and environment-protective and deficiency.
The purpose of the present invention and effect, reached by technical scheme in detail below：
A kind of air cleaning unit for building, including：Guard, ultraviolet lamp, upper box, upper cleaning module, clasp, sealing gasket
Circle, buckle, lower cleaning module, lower box, blower fan, control box, locking device, castor, photocatalyst filtering net, primarily efficient filter bag, height
Imitate filter, metal filter screen, collecting plate, ionizing radiation, composite gas filter, anion generator；The guard is positioned at upper
The top of casing, and guard is connected with upper box by embedded mode；The ultraviolet lamp is arranged on by mosaic mode
The top of casing；The upper cleaning module is located at the inside of upper box, and upper cleaning module passes through embedded mode phase with upper box
Connection；The clasp is located at the both sides of upper box；The both sides for snapping through the mode of being fixedly connected and being arranged on lower box；It is described
Upper box, lower box are connected by clasp with buckle with manner, and the junction of upper box and lower box be provided with it is close
Seal washer；The lower cleaning module is located at the inside of lower box, and lower cleaning module is connected with lower box by embedded mode；
The blower fan is located at the bottom of lower box, and blower fan is connected with lower box by mosaic mode；The control box is arranged on down
On the outer wall of casing, and the bottom of lower box is provided with castor；The castor is internally provided with locking device；It is described just to imitate
Filter bag is located at the lower section of photocatalyst filtering net, and is provided with high efficiency particulate air filter and metal filter screen below primarily efficient filter bag；It is described
Collecting plate is located at the both sides of ionizing radiation, and composite gas filter and anion generator are provided with below ionizing radiation.
Preferably, the guard is cylindrical mesh structure, and the top layer of guard is provided with multigroup passage.
Preferably, it is provided with many places stopper slot on the inwall of the upper box and lower box.
Preferably, the material of the primarily efficient filter bag is effect pre-filtering cotton at the beginning of F levels.
Preferably, filled media is glass fibre inside the high efficiency particulate air filter, and the internal structure of high efficiency particulate air filter is in V
Shape.
Preferably, the inside filled media of the composite gas filter is activated carbon, molecular sieve and oxidant.
The method of work of above-mentioned air cleaning unit for building：Job location is moved to by castor, opened by control box
Dynamic blower fan simultaneously adjusts wind-force size, and particle suspensions enter upper box by guard in the air such as dust caused by construction site
Inside, guard can completely cut off such as leaf, bulk plastic skin and other lightweights but bulky sheet or floccule, photocatalyst filtering net
Being reacted under ultraviolet lamp irradiation, produce clean-up effect, primarily efficient filter bag and high efficiency particulate air filter are physical cleaning formula device,
The suspension of big dust particle can be stopped and collected, the gas after preliminary filtering enters lower box, and dusty gas is by ionization
It is electrically isolated during line, grit is with after negative electricity in anion junction belt, tending to collecting plate surface-discharge and depositing, take away in air
The material such as particle suspensions, the activated carbon in composite gas filter has stronger adsorption capacity, and there is certain taste removal to imitate
Fruit.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art：
1st, the material of primarily efficient filter bag of the present invention is the setting of effect pre-filtering cotton at the beginning of F levels, is advantageous to the practicality of intensifier, mistake
Filter pulp can adsorb larger soot dust granule to avoid main filter layer from being blocked too early, and the design of bag shaped structure increases appearance dirt
Amount, extend the service life of equipment.
2nd, filled media is glass fibre inside high efficiency particulate air filter of the present invention, and the internal structure of high efficiency particulate air filter is V-shaped
The setting of shape, be advantageous to the clean-up effect of intensifier, V-arrangement design increases contact area, and windage is smaller, and dust containing capacity becomes
Greatly.
3rd, the inside filled media of composite gas filter of the present invention is the setting of activated carbon, molecular sieve and oxidant,
Be advantageous to the stability of intensifier, activated carbon has stronger adsorption capacity, further enhances the clean-up effect of equipment.
4th, the present invention has purification efficiency high, clean-up effect is obvious, reduces building dust to big by the improvement in structure
The advantages of pollution in compression ring border, so as to effectively solve problem present in the existing apparatus proposed in above-mentioned background technology and
Deficiency.
Brief description of the drawings
Fig. 1 is the decomposition texture schematic diagram of the present invention.
Fig. 2 is the upper cleaning module structural representation of the present invention.
Fig. 3 is the lower cleaning module structural representation of the present invention.
In figure：Guard 1, ultraviolet lamp 2, upper box 3, upper cleaning module 4, clasp 5, seal washer 6, buckle 7, lower purification
Module 8, lower box 9, blower fan 10, control box 11, locking device 12, castor 13, photocatalyst filtering net 401, primarily efficient filter bag 402,
High efficiency particulate air filter 403, metal filter screen 404, collecting plate 801, ionizing radiation 802, composite gas filter 803, anion occur
Device 804.
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.
Fig. 1 to Fig. 3 is referred to, the present invention provides a kind of technical scheme：
A kind of air cleaning unit for building, including：It is guard 1, ultraviolet lamp 2, upper box 3, upper cleaning module 4, clasp 5, close
Seal washer 6, buckle 7, lower cleaning module 8, lower box 9, blower fan 10, control box 11, locking device 12, castor 13, photocatalyst filter
Net 401, primarily efficient filter bag 402, high efficiency particulate air filter 403, metal filter screen 404, collecting plate 801, ionizing radiation 802, composite gas
Filter 803, anion generator 804；Characterized in that, guard 1 is located at the top of upper box 3, and guard 1 and upper box 3
It is connected by embedded mode；Ultraviolet lamp 2 is arranged on the top of upper box 3 by mosaic mode；Upper cleaning module 4 is positioned at upper
The inside of casing 3, and upper cleaning module 4 is connected with upper box 3 by embedded mode；Clasp 5 is located at the both sides of upper box 3；
Buckle 7 is arranged on the both sides of lower box 9 by being fixedly connected with mode；Upper box 3, lower box 9 are by clasp 5 with buckle 7 to buckle
Conjunction mode is connected, and the junction of upper box 3 and lower box 9 is provided with seal washer 6；Lower cleaning module 8 is located at lower box 9
Inside, and lower cleaning module 8 is connected with lower box 9 by embedded mode；Blower fan 10 is located at the bottom of lower box 9, and wind
Machine 10 is connected with lower box 9 by mosaic mode；Control box 11 is arranged on the outer wall of lower box 9, and the bottom of lower box 9
It is provided with castor 13；Castor 13 is internally provided with locking device 12；Primarily efficient filter bag 402 is located under photocatalyst filtering net 401
Side, and the lower section of primarily efficient filter bag 402 is provided with high efficiency particulate air filter 403 and metal filter screen 404；Collecting plate 801 is positioned at ionization
The both sides of line 802, and the lower section of ionizing radiation 802 is provided with composite gas filter 803 and anion generator 804；Guard 1 is
Cylindrical mesh structure, and the top layer of guard 1 is provided with multigroup passage, can completely cut off as leaf, bulk plastic skin and its
Its lightweight but bulky sheet or floccule, ensure the normal operation of equipment；Upper box 3 on the inwall of lower box 9 with setting
There is many places stopper slot, make that the connection between each module is more close, and fastness is stronger；The material of primarily efficient filter bag 402 is F7 levels
Just effect pre-filtering cotton, enhances the practicality of device, and filter cotton can adsorb larger soot dust granule to avoid main filter layer mistake
Early to be blocked, the design of bag shaped structure increases dust containing capacity, extends the service life of equipment；Filled out inside high efficiency particulate air filter 403
Filling medium is glass fibre, and the internal structure of high efficiency particulate air filter 403 is V-shaped, enhances the clean-up effect of device, and V-arrangement is set
Meter increases contact area, and windage is smaller, and dust containing capacity becomes big；The inside filled media of composite gas filter 803 is activity
Charcoal, molecular sieve and oxidant, enhance the stability of device, and activated carbon has stronger adsorption capacity, makes the purification of equipment
Effect further enhances.
The method of work of the present invention：During using the device, device is moved to job location by castor 13, passes through control
Box 11 starts blower fan 10 and adjusts wind-force size, and particle suspensions are entered by guard 1 in the air such as dust caused by construction site
Enter to inside upper box 3, guard 1 can completely cut off such as leaf, bulk plastic skin and other lightweights but bulky sheet or cotton-shaped
Thing, photocatalyst filtering net 401 react under the irradiation of ultraviolet lamp 2, produce clean-up effect, primarily efficient filter bag 402 and efficient mistake
Filter 403 is physical cleaning formula device, the suspension of big dust particle can be stopped and collected, and the gas after preliminary filtering enters
Lower box 9, dusty gas are electrically isolated when passing through ionizing radiation 802, and grit is with after negative electricity in anion junction belt, tending to collecting plate
801 surface-discharges and deposit, take away the particle suspensions in air, the material tool such as activated carbon in composite gas filter 803
There is stronger adsorption capacity, there is certain taste removal effect, the device is upper and lower fabricated structure, passes through 7 groups of clasp 5 and buckle
It is integrated, is easy to the internal structure of cleaning device, upper cleaning module 4 uses a variety of purification styles with lower cleaning module 8, significantly
Improve the air purification effect of device.
In summary：A kind of air cleaning unit for building and its method of work of the present invention, passes through primarily efficient filter bag
Material is the setting of effect pre-filtering cotton at the beginning of F7 levels, is advantageous to the practicality of intensifier, and filter cotton can adsorb larger flue dust
Particle avoids main filter layer from being blocked too early, and the design of bag shaped structure increases dust containing capacity, extend the service life of equipment；
It is glass fibre by filled media inside high efficiency particulate air filter, and the V-shaped setting of internal structure of high efficiency particulate air filter, favorably
In the clean-up effect of intensifier, V-arrangement design increases contact area, and windage is smaller, and dust containing capacity becomes big；Pass through composite gas
The inside filled media of filter is the setting of activated carbon, molecular sieve and oxidant, is advantageous to the stability of intensifier, living
Property charcoal has stronger adsorption capacity, further enhances the clean-up effect of equipment；By the improvement in structure, there is purification effect
The advantages of rate is high, and clean-up effect is obvious, and pollution of the dust to atmospheric environment is built in reduction, so as to effectively solve background technology
Problem and shortage present in the existing apparatus of middle proposition.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of air cleaning unit for building, including：Guard（1）, ultraviolet lamp（2）, upper box（3）, upper cleaning module
（4）, clasp（5）, seal washer（6）, buckle（7）, lower cleaning module（8）, lower box（9）, blower fan（10）, control box（11）、
Locking device（12）, castor（13）, photocatalyst filtering net（401）, primarily efficient filter bag（402）, high efficiency particulate air filter（403）, metal mistake
Filter screen（404）, collecting plate（801）, ionizing radiation（802）, composite gas filter（803）, anion generator（804）；It is special
Sign is, the guard（1）Positioned at upper box（3）Top, and guard（1）With upper box（3）It is connected by embedded mode；
The ultraviolet lamp（2）Upper box is arranged on by mosaic mode（3）Top；The upper cleaning module（4）Positioned at upper box
（3）Inside, and upper cleaning module（4）With upper box（3）It is connected by embedded mode；The clasp（5）Positioned at upper box
（3）Both sides；The buckle（7）Lower box is arranged on by being fixedly connected with mode（9）Both sides；The upper box（3）, nowel
Body（9）Pass through clasp（5）With buckle（7）It is connected with manner, and upper box（3）With lower box（9）Junction set
There is seal washer（6）；The lower cleaning module（8）Positioned at lower box（9）Inside, and lower cleaning module（8）With lower box（9）
It is connected by embedded mode；The blower fan（10）Positioned at lower box（9）Bottom, and blower fan（10）With lower box（9）Pass through
Mosaic mode is connected；The control box（11）It is arranged on lower box（9）Outer wall on, and lower box（9）Bottom be provided with
Castor（13）；The castor（13）Be internally provided with locking device（12）；The primarily efficient filter bag（402）Filtered positioned at photocatalyst
Net（401）Lower section, and primarily efficient filter bag（402）Lower section be provided with high efficiency particulate air filter（403）With metal filter screen（404）；
The collecting plate（801）Positioned at ionizing radiation（802）Both sides, and ionizing radiation（802）Lower section be provided with composite gas filter
（803）With anion generator（804）.
A kind of 2. air cleaning unit for building according to claim 1, it is characterised in that：The guard（1）For cylinder
Shape network structure, and guard（1）Top layer be provided with multigroup passage.
A kind of 3. air cleaning unit for building according to claim 1, it is characterised in that：The upper box（3）With under
Casing（9）Inwall on be provided with many places stopper slot.
A kind of 4. air cleaning unit for building according to claim 1, it is characterised in that：The primarily efficient filter bag
（402）Material be F7 levels at the beginning of imitate pre-filtering cotton.
A kind of 5. air cleaning unit for building according to claim 1, it is characterised in that：The high efficiency particulate air filter
（403）Internal filled media is glass fibre, and high efficiency particulate air filter（403）Internal structure it is V-shaped.
A kind of 6. air cleaning unit for building according to claim 1, it is characterised in that：The composite gas filter
（803）Inside filled media be activated carbon, molecular sieve and oxidant.
A kind of 7. method of work of air cleaning unit for building according to claim 1：Pass through castor（13）It is moved to and applies
Building site point, passes through control box（11）Start blower fan（10）And wind-force size is adjusted, in the air such as dust caused by construction site
Grain suspension passes through guard（1）Enter upper box（3）Inside, guard（1）It can completely cut off such as leaf, bulk plastic skin and other
Lightweight but bulky sheet or floccule, photocatalyst filtering net（401）In ultraviolet lamp（2）React, produce net under irradiation
Change effect, primarily efficient filter bag（402）With high efficiency particulate air filter（403）, can be by the suspension of big dust particle for physical cleaning formula device
Thing is stopped and collected, and the gas after preliminary filtering enters lower box（9）, dusty gas passes through ionizing radiation（802）When be electrically isolated,
Grit is with after negative electricity in anion junction belt, tending to collecting plate（801）Surface-discharge and deposit, take away particle in air and suspend
Thing, composite gas filter（803）The materials such as interior activated carbon have stronger adsorption capacity, have certain taste removal effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710837664.7A CN107676880A (en) | 2017-09-18 | 2017-09-18 | A kind of air cleaning unit for building and its method of work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710837664.7A CN107676880A (en) | 2017-09-18 | 2017-09-18 | A kind of air cleaning unit for building and its method of work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107676880A true CN107676880A (en) | 2018-02-09 |
Family
ID=61135935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710837664.7A Pending CN107676880A (en) | 2017-09-18 | 2017-09-18 | A kind of air cleaning unit for building and its method of work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676880A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520041A (en) * | 2018-11-21 | 2019-03-26 | 深圳丰威源自动化设备有限公司 | A kind of air purifier strainer with intelligent chip detection |
| CN110270406A (en) * | 2019-05-29 | 2019-09-24 | 冉阳 | A kind of cereal foods production equipment |
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| US7531141B2 (en) * | 2006-10-12 | 2009-05-12 | Airinspace B.V. | Mobile air decontamination and purification unit |
| JP2012105707A (en) * | 2010-11-15 | 2012-06-07 | Hiroo Takei | Deodorizer-smoke extinguisher |
| CN203385097U (en) * | 2013-07-26 | 2014-01-08 | 大成工业（张家港）机械有限公司 | Medical air purifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520041A (en) * | 2018-11-21 | 2019-03-26 | 深圳丰威源自动化设备有限公司 | A kind of air purifier strainer with intelligent chip detection |
| CN110270406A (en) * | 2019-05-29 | 2019-09-24 | 冉阳 | A kind of cereal foods production equipment |
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Application publication date: 20180209 |
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