CN103623656A - Blowback control method for air filter - Google Patents
Blowback control method for air filter Download PDFInfo
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- CN103623656A CN103623656A CN201310592451.4A CN201310592451A CN103623656A CN 103623656 A CN103623656 A CN 103623656A CN 201310592451 A CN201310592451 A CN 201310592451A CN 103623656 A CN103623656 A CN 103623656A
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- blowback
- filter cartridge
- cartridge filter
- differential pressure
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Abstract
The invention discloses a blowback control method for an air filter. When difference deltaP between the internal pressure and the external pressure of a filter cartridge reaches a preset value Ps1, a blowback device is started to blow back the filter cartridge so as to reduce the difference between the internal pressure and the external pressure of the filter cartridge; when the difference deltaP between the internal pressure and the external pressure of the filter cartridge rises once again to Ps2 along with the time, the blowback device is re-started; when the blowback device is started at the i-th time, the preset value of the difference between the internal pressure and the external pressure of the filter cartridge is Psi; the steps are repeatedly carried out in sequence until deltaP reaches final resistance Pt, and the filter cartridge is replaced, wherein for Pt,..., Psi,..., Ps2 and Ps1, the former is greater than the latter. According to the blowback control method for the air filter, the filter cartridge is blown back and self-cleaned in an early stage, so that the service life of the filter cartridge is prolonged, and the environmental pollution caused by blowback aerodynamic noises is greatly reduced.
Description
Technical field
The invention belongs to air cleaner control method, relate in particular to the control method of back-blowing device.
Background technology
Take in the vane rotary plant equipment that air is medium; conventionally before entrance, configure air cleaner; airborne various impurity, dust-filtering are fallen; with protection rotating vane, avoid infringement, impact; maintain steady, the high-efficiency operation of equipment, for example: the air cleaner before gas turbine inlet air system, blower inlet.In addition, air cleaner is also widely used in the equipment such as air compression station, factory building.Air cleaner in use, due to the accumulation gradually of dust and various impurity, rises to the resistance of Air Flow gradually, while acquiring a certain degree, and the filter core that must more renew.The blowback of self-cleaning air filter employing compressed air, can cross the dust that accumulates in cartridge surface, impurity are blown off, thereby has effectively extended the service life of filter core, therefore in air cleaner design, is used widely.
In the self-cleaning control of traditional blowback, set a fixing Ps value, when before and after filter cylinder, pressure reduction reaches Ps value, PLC program starts blowback.Such blowback operation is continued until that the pressure drop of filter cylinder reaches resistance Pt eventually,
when pressure reduction is greater than Ps, blowback is carried out always.Although in blowback, the dust of filter cylinder also can constantly accumulate always, pressure reduction progressively increases, and final, Ps can meet or exceed Pt.
Summary of the invention
Goal of the invention: for the problem and shortage of above-mentioned existing existence, the object of this invention is to provide a kind of air filtration back blowing control method.
Technical scheme: for achieving the above object, the present invention by the following technical solutions: a kind of air filtration back blowing control method, cartridge filter inside and outside differential pressure reaches Δ P and reaches preset value Ps
1time, start back-blowing device cartridge filter is carried out blowback and reduces cartridge filter inside and outside differential pressure; Cartridge filter inside and outside differential pressure will raise in time again, and now cartridge filter inside and outside differential pressure Δ P is Ps
2shi Zaici starts back-blowing device; When starting back-blowing device the i time, the preset value of cartridge filter inside and outside differential pressure is Ps
i; Repeatedly until Δ P reaches while hindering Pt eventually, cartridge filter is changed successively; Pt > wherein ... Ps
i> Ps
2> Ps
1.
As preferably, described Psi meets formula (1):
Ps
i=Ps
1+P （1）
In formula, Ps
iit is the preset value of cartridge filter inside and outside differential pressure while starting back-blowing device the i time; Ps
1it is the preset value of cartridge filter inside and outside differential pressure while starting back-blowing device the 1st time; P P=150～300Pa.
Beneficial effect: compared with prior art, the present invention has the following advantages: the Ps value that the trigger value of the blowback for the first time Ps-1 of new settings sets than tradition is little, that is to say, self-cleaning to filter cylinder blowback more in early days, has extended the service life of filter cylinder; The blowback cumulative time that the accumulative total blowback time of new settings is set than tradition significantly reduces, and has reduced the fault rate of the blowback system components and parts such as compressed air consumption, minimizing solenoid diaphragm valve, reduces energy consumption and operation cost; Compressed air during to filter cylinder blowback, produces strong aerodynamic noise.New establishing method has significantly reduced the blowback cumulative time, means and significantly reduces the pollution of blowback air moving noise to environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of air filtration back-blowing device of the present invention.
Wherein, cartridge filter 1, pressure transmitter 2, solenoid diaphragm valve 3, anti-blowpipe spout 4, PLC5.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
As shown in Figure 1, the basic functional principle of self-cleaning strainer: pressure transmitter is sent to PLC 10 by the pressure differential Δ P signal before and after blowback filter cylinder.When Δ P reaches a setting value P1, PLC starts blowback and controls, and solenoid diaphragm valve is opened, and compressed air is from the ejection of anti-blowpipe spout, and blowback air enters filter cylinder inner chamber.Due to the violent disturbance of blowback air at filter cylinder inner chamber, the dust, the impurity that accumulate in filter cylinder outer surface are shaken off, and like this, the front and back pressure differential deltap P of filter cylinder reduces.
The blowback of cartridge filter is self-cleaning, can only blow off and accumulate in the impurity such as dust of filter cylinder outer surface.At air, when the filter core filter paper, part dust impurity has entered and has remained in the microscopic fibers space of filter paper, and these dust impurity can not gone out by blowback is self-cleaning, accumulate over a long period, and filter cylinder will be increasing to the resistance of circulation of air.In the self-cleaning control of traditional blowback, set a fixing Ps value, when before and after filter cylinder, pressure reduction reaches Ps value, PLC program starts blowback.Such blowback operation is continued until that the pressure drop of filter cylinder reaches when resistance Pt(filter cylinder reaches resistance eventually eventually, need renew).
In the new self-cleaning control of blowback of the present invention, blowback startup value is no longer a fixed value.Before and after cartridge filter, pressure reduction reaches Ps
1during value, PLC program starts blowback.After operation a period of time, after blowback, filter cylinder front and back pressure drop is still higher than Ps
1value, will be adjusted to Ps in blowback startup value
2, the rest may be inferred, until the pressure drop of filter cylinder reaches while hindering Pt eventually, changes filter cylinder.
Some technical descriptioons of the new method that blowback system of the present invention is set: when new blowback filter cylinder is installed and used, front and back pressure reduction is defined as just resistance P0.The setting value of blowback for the first time under new settings is Ps-1=P0
+(150～300 Pa); PLC controls the blowback operation of blowback system.In PLC programming, blowback trigger value is designed to opening, and scope is limited in 200-1000Pa, Ps-1/ Ps-2/ Ps-3 ... setting Deng blowback trigger value can be carried out on the guidance panel of PLC.
Claims (2)
1. an air filtration back blowing control method, is characterized in that: cartridge filter inside and outside differential pressure reaches Δ P and reaches preset value Ps
1time, start back-blowing device cartridge filter is carried out blowback and reduces cartridge filter inside and outside differential pressure; Cartridge filter inside and outside differential pressure will raise in time again, and now cartridge filter inside and outside differential pressure Δ P is Ps
2shi Zaici starts back-blowing device; When starting back-blowing device the i time, the preset value of cartridge filter inside and outside differential pressure is Ps
i; Repeatedly until Δ P reaches while hindering Pt eventually, cartridge filter is changed successively; Pt > wherein ... Ps
i> Ps
2> Ps
1.
2. air filtration back blowing control method according to claim 1, is characterized in that: described Psi meets formula (1):
Ps
i=Ps
1+P （1）
In formula, Ps
iit is the preset value of cartridge filter inside and outside differential pressure while starting back-blowing device the i time; Ps
1it is the preset value of cartridge filter inside and outside differential pressure while starting back-blowing device the 1st time; P=150～300Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310592451.4A CN103623656A (en) | 2013-11-22 | 2013-11-22 | Blowback control method for air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310592451.4A CN103623656A (en) | 2013-11-22 | 2013-11-22 | Blowback control method for air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103623656A true CN103623656A (en) | 2014-03-12 |
Family
ID=50205325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310592451.4A Pending CN103623656A (en) | 2013-11-22 | 2013-11-22 | Blowback control method for air filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103623656A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457946A (en) * | 2014-09-11 | 2016-04-06 | 无锡一净净化设备有限公司 | Air shower chamber and control method |
| CN106925067A (en) * | 2016-01-08 | 2017-07-07 | 周午贤 | A kind of air cleaning method |
| CN111946463A (en) * | 2020-08-12 | 2020-11-17 | 中石油西北联合管道有限责任公司 | Gas turbine intake blowback control method, system and computer readable medium |
| CN112060579A (en) * | 2020-09-29 | 2020-12-11 | 湖南华曙高科技有限责任公司 | Circulation filtering device for manufacturing three-dimensional object and filtering method thereof |
| CN113230757A (en) * | 2021-05-11 | 2021-08-10 | 昆山劲捷环保科技有限公司 | Self-cleaning method and system for filter element of dust collector by adopting self-adaptive fuzzy control |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1119432A (en) * | 1997-07-04 | 1999-01-26 | Mochida Shoko Kk | Filter for air conditioning |
| CN1843561A (en) * | 2006-03-14 | 2006-10-11 | 镇江华强电力设备厂 | Pulse self-cleaning type air filter |
-
2013
- 2013-11-22 CN CN201310592451.4A patent/CN103623656A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1119432A (en) * | 1997-07-04 | 1999-01-26 | Mochida Shoko Kk | Filter for air conditioning |
| CN1843561A (en) * | 2006-03-14 | 2006-10-11 | 镇江华强电力设备厂 | Pulse self-cleaning type air filter |
Non-Patent Citations (1)
| Title |
|---|
| 匡卓贤等: "乙烯装置中甲烷气的过滤净化", 《石油炼制与化工》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105457946A (en) * | 2014-09-11 | 2016-04-06 | 无锡一净净化设备有限公司 | Air shower chamber and control method |
| CN106925067A (en) * | 2016-01-08 | 2017-07-07 | 周午贤 | A kind of air cleaning method |
| CN111946463A (en) * | 2020-08-12 | 2020-11-17 | 中石油西北联合管道有限责任公司 | Gas turbine intake blowback control method, system and computer readable medium |
| CN112060579A (en) * | 2020-09-29 | 2020-12-11 | 湖南华曙高科技有限责任公司 | Circulation filtering device for manufacturing three-dimensional object and filtering method thereof |
| CN112060579B (en) * | 2020-09-29 | 2022-08-16 | 湖南华曙高科技股份有限公司 | Circulating filter device for manufacturing three-dimensional object and filtering method thereof |
| CN113230757A (en) * | 2021-05-11 | 2021-08-10 | 昆山劲捷环保科技有限公司 | Self-cleaning method and system for filter element of dust collector by adopting self-adaptive fuzzy control |
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Application publication date: 20140312 |