CN110201465A - A kind of self-cleaning effect testboard of self-cleaning air filter - Google Patents
A kind of self-cleaning effect testboard of self-cleaning air filter Download PDFInfo
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- CN110201465A CN110201465A CN201910492578.6A CN201910492578A CN110201465A CN 110201465 A CN110201465 A CN 110201465A CN 201910492578 A CN201910492578 A CN 201910492578A CN 110201465 A CN110201465 A CN 110201465A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 56
- 230000000694 effects Effects 0.000 title claims abstract description 34
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims abstract description 4
- 238000000889 atomisation Methods 0.000 claims description 13
- 238000009692 water atomization Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 14
- 239000000428 dust Substances 0.000 abstract description 12
- 238000011056 performance test Methods 0.000 abstract description 2
- 230000035485 pulse pressure Effects 0.000 abstract description 2
- 239000003570 air Substances 0.000 description 60
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- BPKGOZPBGXJDEP-UHFFFAOYSA-N [C].[Zn] Chemical compound [C].[Zn] BPKGOZPBGXJDEP-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of self-cleaning effect testboards of self-cleaning air filter: wind pipe component, and including the filter chamber for placing filter, upstream connects mixing chamber, and downstream is given a dinner for a visitor from afar machine through ventilation duct；Dirt component is sent out, including connecing the powder producer in mixing chamber by infusing dirt pipe；Blowback component, the blowback nozzle including being set to the filter of face in ventilation duct, compressor are blowback nozzle gas supply by the air main pipe with blowback solenoid valve；Monitoring assembly, including the pressure transmitter in the differential pressure transmitter being mounted between filter chamber upstream and downstream by probe tube and air main pipe；Control device is according to the start and stop of the feedback control compressor of pressure transmitter, according to the opening and closing of the feedback control blowback solenoid valve of differential pressure transmitter.By the testboard, air filter can be tested under atmospheric dust and test self-cleaning effect under dirt, examine air filter in the applicability of application places, determine optimal air pulse pressure, width and amplitude, low performance test intensity under high humidity environment.
Description
Technical field
The present invention relates to a kind of self-cleaning effect testboards, and in particular to a kind of self-cleaning effect survey of self-cleaning air filter
Test stand belongs to air filter performance detection technical field.
Background technique
When surrounding air dustiness is larger, is frequently replaced in order to avoid air filter and cause downstream machine is unplanned to stop
Fortune, it will usually select the self-cleaning strainer that dust containing capacity is big, such filter is inverse by means of one when differential pressure reaches setting value
Online self-cleaning to the realization of pulse backblowing air-flow, self-cleaning after-filter is reusable.
But for different filter materials under different application environment, self-cleaning effect difference is big；Therefore, it is necessary under application environment,
Verification experimental verification is carried out to the self-cleaning effect of filter, to select the filter being adapted for use under environment.
Chinese patent CN203606156U discloses a kind of air filter blowback measure of merit platform, which is based on examination
It tests dirt and test is compared to the blowback effect that different components combine, it is intended to verify the Selection and Design of blowback component.But it is empty
Contaminant particle and humidity in gas were changed with region, season, were not constant between, and were difficult with specific test dirt
Examine blowback effect of the self-cleaning strainer under actual application environment.In addition, the size of separating force caused by air pulse
It is related to stream pressure, pulse width and amplitude.
Therefore, based under atmospheric dust and test dirt, carry out the experimental study of filter self-cleaning effect, with the suitable mistake of determination
Filter and optimal pulse, width and amplitude are very important.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide a kind of self-cleaning effects of self-cleaning air filter
Fruit testboard.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of self-cleaning effect testboard of self-cleaning air filter, including wind pipe component, hair dirt component, blowback component, monitoring
Component；
The wind pipe component, including the filter chamber for placing filter, upstream connects mixing chamber, and downstream is given a dinner for a visitor from afar through ventilation duct
Machine；
The hair dirt component, including connecing the powder producer in mixing chamber by infusing dirt pipe；
The blowback component, the blowback nozzle including being set to the filter of face in ventilation duct, compressor pass through band blowback electromagnetism
The air main pipe of valve is blowback nozzle gas supply；
The monitoring assembly, including in the differential pressure transmitter being mounted between filter chamber upstream and downstream by probe tube and air main pipe
Pressure transmitter；
Control device is according to the start and stop of the feedback control compressor of pressure transmitter, according to the feedback control blowback of differential pressure transmitter
The opening and closing of solenoid valve.
Current equalizer is equipped between above-mentioned filter chamber and mixing chamber.
Above-mentioned blowback arrangement of nozzles is on the central axes of ventilation duct.
Above-mentioned monitoring assembly further includes the air flow sensor in ventilation duct,
Control device drives blower by converter plant according to the feedback of air flow sensor.
A kind of self-cleaning effect testboard of above-mentioned self-cleaning air filter, further includes water atomization component: including being set to
Atomizer in mixing chamber connects air main pipe by being atomized intake valve, by being atomized inlet valve water receiving source.
Further, above-mentioned monitoring assembly further includes being set in filter chamber to be equipped with humidity sensor,
Control device opens and closes atomization intake valve and atomization inlet valve according to the feedback of humidity sensor.
The outside of above-mentioned mixing chamber is equipped with rain cover.
Above-mentioned air main pipe is powder producer gas supply by hair dirt intake valve.
Above-mentioned filter chamber, at least side are transparent panel.
A kind of self-cleaning effect testboard of above-mentioned self-cleaning air filter, further include respectively with monitoring assembly, control
The wireless PLC that device is electrically connected；
Remote control terminal is connect by network with wireless PLC, and feedback, the operating control device of monitoring assembly are received.
The invention has the beneficial effects that:
A kind of self-cleaning effect testboard of self-cleaning air filter of the invention can be utilized respectively atmospheric dust and test dirt, mould
Quasi- high humidity environment, determines optimal air pulse pressure, width and amplitude under high humidity environment；Filter is verified at test site
Self-cleaning effect, for reasonably select air filter, determine blowback pressure, impulse amplitude and width provide reliably according to
According to；Testboard is mounted in integral box, can as needed be surveyed the using area that testboard is moved to air filter
Examination.
Test data of the invention can be transmitted on server by network, by game server real time monitoring and under
Data are carried, realize unattended, reduction performance test intensity, with very strong practicability and wide applicability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of self-cleaning effect testboard of the invention.
Fig. 2 is the flow chart of self-cleaning effect testboard of the invention.
Fig. 3 is the structural schematic diagram that self-cleaning effect testboard of the invention is placed in container.
Fig. 4 is wind speed closed loop controlling structure figure of the invention.
Fig. 5 is the transmission topological diagram of remote control terminal of the invention.
Fig. 6 is the structural schematic diagram of current equalizer of the invention.
Attached meaning marked in the figure is as follows: 1, rain cover, 2, mixing chamber, 3, current equalizer, 4, filter chamber, 5, ventilation duct,
6, apparatus for measuring air quantity, 7, blower, 8, blowback nozzle, 9, blowback solenoid valve, 10, note dirt pipe, 11, powder producer, 12, hair dirt air inlet
Valve, 13, atomizer, 14, atomization intake valve, 15, atomization inlet valve, 16, air main pipe, 17, compressor, 18, air accumulator,
19, humidity sensor, 20, differential pressure transmitter, 21, pressure transmitter, 22, air flow sensor, 23, filter, 24, wireless PLC,
25, power control cabinet, 26, container.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
A kind of self-cleaning effect testboard of self-cleaning air filter, by wind pipe component, hair dirt component, blowback component, water
Atomizing component, monitoring assembly, control device (power control cabinet), wireless PLC and remote control terminal composition.
Wind pipe component is made of mixing chamber 2, filter chamber 4, the ventilation duct 5 being sequentially connected in series；The end of ventilation duct 5 is given a dinner for a visitor from afar machine 7.
Mixing chamber 2 and filter chamber 4 are directly provided with the current equalizer 3 of the regulation production by EN779, keep dust and water mist evenly dispersed；It is excellent
Choosing, mixing chamber 2, filter chamber 4 are in rectangle, and ventilation duct 5 is rounded.
Sending out dirt component is the powder producer 11 with note dirt pipe 10；Note 10 port of dirt pipe connects in mixing chamber, and powder producer 11 passes through hair
Dirt intake valve 12 connects air main pipe 16.
Water atomization component is to connect air main pipe 16 set on indoor atomizer 13 is filtered by being atomized intake valve 14, lead to
Cross 15 water receiving source of atomization inlet valve.
Blowback component be arranged on the central axes of ventilation duct 5, the blowback nozzle 8 of face filter 23, pass through blowback electricity
Magnet valve 9 connects air main pipe 16.
Air compressor 17 equipped with air accumulator 18 is that air main pipe 16 provides gas source.
Monitoring assembly is formed by detecting instrument, wireless PLC 24 and control device on the spot；Detection instrument includes: installation on the spot
Humidity sensor 19 between filter 23 and current equalizer 3, is mounted on the differential pressure between filter chamber upstream and downstream by probe tube
Transmitter 20 installs the pressure transmitter 21 in air main pipe, installs the apparatus for measuring air quantity 6 in ventilation duct, the air measuring
The both ends of device 6 are respectively equipped with air flow sensor 22；Control device is opened according to the feedback control compressor of pressure transmitter 21
Stop；According to the opening and closing of the feedback control blowback solenoid valve of differential pressure transmitter 20；According to the feedback of air flow sensor 22, pass through frequency conversion
Device drives blower 7；According to the feedback of humidity sensor 19, opening and closing atomization intake valve 14 and atomization inlet valve 15.
Wireless PLC24 is electrically connected with monitoring assembly, control device respectively；Remote control terminal is by network and wirelessly
PLC24 connection receives feedback, the operating control device of monitoring assembly.
Optimization, the outside of mixing chamber 2 is equipped with rain cover 1, and the two sides of filter chamber 4 are glass transparent plate, above-mentioned air hose
Component, blowback component, hair dirt component, water atomization component, monitor component, power control cabinet 25 are installed in 26 in container, convenient for turning
Fortune.
The principle of the present invention is:
Using atmospheric dust or test dirt as load dirt, dust flows into filter with air, on the filter along with dust
It gradually accumulates, the resistance of filter constantly increases, and when filter pressure difference reaches setting value, starting blowback assembly solenoid is imported
One pulse high-speed flow, inducing peripheral air form jet stream air-flow, and jet stream air-flow is along the central axes of filter from clean side-blown
To dirty side, most of kinetic energy is changed into pressure energy in filter bag, forms radial blowback air-flow, blowback air-flow is penetrating filtrate
When with dust layer, transient-upset separating force is generated, when the separating force that air pulse generates is greater than the adhesive force of dust, was gathered
The dust of filter surface of filter medium loosens, falls off；At this point, the pressure difference such as filter is reduced to acceptable value, then it is assumed that reach
Self-cleaning effect, it is possible thereby to judge that filter is suitable for using in the region；If pressure difference is not lowered to defined value or even does not have
It changes, then self-cleaning effect is poor, then illustrates that filter is not suitable for using in test region.
In the process, the pulse width and impulse amplitude of air pulse can switch time by blowback solenoid valve and storages
The pressure of gas tank (air compressor machine) adjusts；In addition, filter ambient humidity can be adjusted to 80% or more by means of water atomization component,
Examine the self-cleaning effect of filter under high humidity environment.
Embodiment:
According to the nominal air delivery of existing filter, blower nominal air delivery, total pressure are respectively 6000Nm3/ h, 3000Pa, mating electricity
Machine is variable-frequency motor.
According to the type selecting of blower and the size of filter, the size of mixing chamber is the square tube of 610x610, and material is plating
Zinc carbon steel, thickness 5mm；Ventilation duct is DN500.
Blowback nozzle 8 is arranged on the central axes of ventilation duct 5, and the axial spacing of blowback nozzle 8 and filter 23 can be with
Adjustment, adjustment is according to being the optimum results for spraying simulation and analysis of flow field, and when Optimality Criteria is blowback nozzle flow minimum, jet stream is lured
It is uniform to lead maximum flow, filter inner wall pressure, spacing at this time is best spacing.
Dirt component is sent out to make by the regulation of EN779.
Atomizer 13 is ultrasonic wave air atomizer spray nozzle, and water mist atomizing particle size is between 1-10mm.
When detection:
The analog signals that wireless PLC 24 receives detection are transferred to Cloud Server, while air quantity after digital operation
Sensor analog quantity believes the expanded rear feedback signal as converter plant in power control cabinet 25；
The analog signals that pressure transmitter 21, differential pressure transmitter 20 detect are converted to switching value, respectively as compressor 17, instead
The power supply for blowing solenoid valve 9 switches on or off signal.
Wireless PLC 24 is connected by internet, Cloud Server with remote control terminal, remote control terminal is capable of displaying live view,
Downloading data, setting correlation set data, realize that test site is unattended.
Maintain air quantity constant as shown in figure 4, the air quantity of wind pipe component is adjusted using closed loop.Target air volume is set, target is worked as
When the measured value (feedback air quantity) of air quantity and current air volume sensor 22 has differences, the converter plant in power control cabinet 25 adjusts feedback
Electric frequency changes the revolving speed of blower, until actual measurement air quantity is consistent with setting air quantity.During the test, with the testing time
It lengthens, the dust containing capacity of air filter will increase, and resistance also increases, and can maintain the constant of air quantity by closed loop adjusting.
Humid control before filter 23 is carried out using control model on the spot, when ambient air relative humidity is less than 70%,
It such as needs to carry out high humility blowback, can successively open atomization intake valve 14 and atomization inlet valve 15, adjust atomization inlet valve 15
Aperture, making humidity sensor 19, show value reaches required value on the spot.
Compressed air pressure control is realized by pressure transmitter 21, wireless PLC 24, power control cabinet 25.Work as pressure transmitter
When 21 measuring signals reach pressure set points (lower and upper limit), wireless PLC 24 exports switching value on-off signal, directly controls
The start and stop of compressor 17 processed.Low pressure limit and the upper limit can distant place settings.
Similarly, when the analog signals that differential pressure transmitter 20 detects reach setting value (upper and lower bound value), wireless PLC
The switching value on-off signal of 24 outputs, switches on or off the power supply of blowback solenoid valve 9,9 conduction time of blowback solenoid valve is simultaneously
By the control for remaining up timer.Differential pressure upper and lower bound value is determined according to filter nominal value.
Blowback control can be divided to it is automatic, two kinds of manual mode.
Under automatic mode, blowback solenoid valve 9 will export differential pressure switch amount signal and be remained up according to wireless PLC 24
The turn-on time of timer setting switches on or off the power supply triggering blowback of blowback solenoid valve 9.Blowback pulse width is maintained at
100-200ms range, if differential pressure is not up to lower limit value, after delay a period of time and when blowback air pressure reaches upper limit value, then
Secondary triggering blowback pulse until the differential pressure of filter 23 reaches lower limit value, and cuts off the power supply of blowback solenoid valve, stops blowback.
In a manual mode, blowback solenoid valve 9 can be manually started, until the differential pressure of filter 23 reaches lower limit value.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (10)
1. a kind of self-cleaning effect testboard of self-cleaning air filter, which is characterized in that including wind pipe component, hair dirt component,
Blowback component, monitoring assembly；
The wind pipe component, including the filter chamber for placing filter, upstream connects mixing chamber, and downstream is given a dinner for a visitor from afar through ventilation duct
Machine；
The hair dirt component, including connecing the powder producer in mixing chamber by infusing dirt pipe；
The blowback component, the blowback nozzle including being set to the filter of face in ventilation duct, compressor pass through band blowback electromagnetism
The air main pipe of valve is blowback nozzle gas supply；
The monitoring assembly, including in the differential pressure transmitter being mounted between filter chamber upstream and downstream by probe tube and air main pipe
Pressure transmitter；
Control device is according to the start and stop of the feedback control compressor of pressure transmitter, according to the feedback control blowback of differential pressure transmitter
The opening and closing of solenoid valve.
2. a kind of self-cleaning effect testboard of self-cleaning air filter according to claim 1, which is characterized in that described
Current equalizer is equipped between filter chamber and mixing chamber.
3. a kind of self-cleaning effect testboard of self-cleaning air filter according to claim 1, which is characterized in that described
Blowback arrangement of nozzles is on the central axes of ventilation duct.
4. a kind of self-cleaning effect testboard of self-cleaning air filter according to claim 1, which is characterized in that described
Monitoring assembly further includes the air flow sensor in ventilation duct,
Control device drives blower by converter plant according to the feedback of air flow sensor.
5. a kind of self-cleaning effect testboard of self-cleaning air filter according to claim 1, which is characterized in that also wrap
It includes water atomization component: including the atomizer being set in mixing chamber, connecing air main pipe by being atomized intake valve, intake by atomization
Valve water receiving source.
6. a kind of self-cleaning effect testboard of self-cleaning air filter according to claim 5, which is characterized in that described
Monitoring assembly further includes being set in filter chamber to be equipped with humidity sensor,
Control device opens and closes atomization intake valve and atomization inlet valve according to the feedback of humidity sensor.
7. a kind of self-cleaning effect testboard of self-cleaning air filter according to claim 1, which is characterized in that described
The outside of mixing chamber is equipped with rain cover.
8. a kind of self-cleaning effect testboard of self-cleaning air filter according to claim 1, which is characterized in that described
Air main pipe is powder producer gas supply by hair dirt intake valve.
9. a kind of self-cleaning effect testboard of self-cleaning air filter according to claim 1, which is characterized in that described
Filter chamber, at least side are transparent panel.
10. a kind of self-cleaning effect testboard of -9 any self-cleaning air filters, feature exist according to claim 1
In, further include respectively with monitoring assembly, control device be electrically connected wireless PLC；
Remote control terminal is connect by network with wireless PLC, and feedback, the operating control device of monitoring assembly are received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910492578.6A CN110201465A (en) | 2019-06-06 | 2019-06-06 | A kind of self-cleaning effect testboard of self-cleaning air filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910492578.6A CN110201465A (en) | 2019-06-06 | 2019-06-06 | A kind of self-cleaning effect testboard of self-cleaning air filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987758A (en) * | 2019-12-10 | 2020-04-10 | 上海电气燃气轮机有限公司 | Filter core test system |
| CN113777004A (en) * | 2021-08-20 | 2021-12-10 | 东风华神汽车有限公司 | Automatic maintenance verification device and method for air filter |
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