A kind of portable dust collecting device and analytical approach thereofTechnical field
The invention belongs to dust collection, environmental protection technical field, be specifically related to a kind of portable dust collecting device and analytical approach thereof.
Background technology
Current China urban haze weather frequently occurs, environmental protection pressure increases day by day.The haze weather normally multiple pollution source immixture such as vehicle exhaust, industrial discharge, building airborne dust, waste incineration is formed.The formation of haze has three key elements: one is the physical base source generating graininess airborne dust; Two is that differences in motion causes airborne dust; Three is that airborne dust Ji Yuan and differences in motion process are collected within the scope of certain space, and the final and hydrone tuberculosis of particle is agglomerated into haze.
Airborne dust is because ground dust flies upward in wind-force, artificial drive and other drives and enters the open pollution source of air, is the important component part of overall suspended pellet in surrounding air.It has become the principal element that serious restriction China quality of air environment improves.Dust pollution has not only had a strong impact on Urban Ecology Landscape, and more causes condition of serious stress of soil to health.In order to control airborne dust better, except taking to carry out, except real-time surveillance and control measure, more should taking positive preventive measure, preventing trouble before it happens to it.
Summary of the invention
The object of the invention is for solving the preventive measure that exist in above-mentioned prior art problem not in place, and provide one can reach prevention object, thus take the necessary measures, effectively avoid the portable dust collecting device of the generation of airborne dust.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of portable dust collecting device, comprises the electric power system be made up of accumulator and electric wire, to be united by blower fan, housing, system air intake airduct, 2 the root systems wind power system that air-out airducts form, the dust collecting system be made up of 2 groups of dust arrester installations, dust settling pocket and supports; Described blower fan is made up of blower motor, blower housing, air inlet and fan outlet; Described accumulator is connected with the blower motor be arranged on blower housing by electric wire, described air inlet is connected with housing by flange, described fan outlet is connected by the first flange and 2 root systems air-out airduct of uniting, the end installation dust settling pocket of system air-out airduct; Described system air-out airduct is arranged on support, and described support is positioned at front end and the end of system air-out airduct; 2 groups of described dust arrester installations are connected by the second flange air-out airduct of uniting with 2 root systems respectively, and between support and support; Described system air intake airduct is evenly arranged in housing surrounding.
Further preferred version, the quantity that described system air intake airduct is arranged is not less than 10, and system air intake airduct air inlet distance ground is not less than 3cm, and extends to enclosure interior.
Further preferred version, described housing is right cylinder, and the ratio of base diameter and top diameter is not less than 1.35, and it is directly placed in ground.
Use a method for described portable dust collecting device collection and analysis laying dust, wherein: comprise the following steps:
A, measurement housing bottom area, and be designated as S, unit is m2; Utilize electronic balance to weigh dust collecting system, and quality is designated as m0, unit is g;
B, portable dust collecting device is placed on tested region;
C, adjustment blower motor, start blower fan, make the wind speed of housing bottom reach 1 ~ 40m/s;
D, air enter into housing bottom from system air intake airduct, the laying dust of bottom is purged, the laying dust that purging gets up is along with intrasystem wind is by after air inlet, system air-out airduct is entered through fan outlet, after enter in air through dust settling pocket, under gravity, laying dust fall, enter in dust arrester installation, so far laying dust is all collected into;
E, close fan power, utilize electronic balance to weigh the dust collecting system after gathering dust, quality is designated as m;
Laying dust within the scope of f, laying dust concentration and different grain size calculates by formula 1 respectively:
Formula 1
In formula, JC-laying dust concentration, unit is g/m2.
Compared with prior art, tool of the present invention has the following advantages:
First, this practical new equipment is directly placed in ground, and adopt accumulator to be electric power system, do not need to connect AC power, the laying dust acquisition problems that express highway pavement, urban road surfaces and other road surface, building ground etc. can generate the physical base source of graininess flue dust can be solved.
The second, apparatus of the present invention by regulating blower motor rotating speed, can regulate wind speed, the wind-force of simulation different brackets, and carry out the collection of laying dust, thus judge under different wind conditions, the airborne dust problem that may occur, and take preventive measures targetedly, the generation of prevention airborne dust.
3rd, laying dust can all be collected by apparatus of the present invention, can not cause airborne dust, avoids bringing pollution to environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of portable dust collecting device of the present embodiment, comprises the electric power system be made up of accumulator 1 and electric wire 2, to be united by blower fan, housing 8, system air intake airduct 9,2 the root system wind power system that air-out airduct 10 forms, the dust collecting system be made up of 2 groups of dust arrester installations 13, dust settling pocket 14 and support 11; Described blower fan is made up of blower motor 3, blower housing 4, air inlet 5 and fan outlet 7; Described accumulator 1 is connected with the blower motor 3 be arranged on blower housing 4 by electric wire 2, described air inlet 5 is connected with housing 8 by flange, described fan outlet 7 is connected by the first flange 6 and 2 root systems air-out airduct 10 of uniting, and the end of system air-out airduct 10 installs dust settling pocket 14; Described system air-out airduct 10 is arranged on support 11, and described support is positioned at front end and the end of system air-out airduct; 2 groups of described dust arrester installations 13 are connected by the second flange 12 air-out airduct 10 of uniting with 2 root systems respectively, and between support and support; Described system air intake airduct 9 is evenly arranged in housing 8 surrounding.The quantity that described system air intake airduct is arranged is not less than 30, and system air intake airduct 9 air inlet distance ground is not less than 3cm, and extends to enclosure interior.Described housing 8 is in right cylinder, and the ratio of base diameter and top diameter is not less than 1.35, and it is directly placed in ground.
Use a method for described portable dust collecting device collection and analysis laying dust, wherein: comprise the following steps:
A, measurement housing 8 bottom area, and be designated as S, unit is m2; Utilize electronic balance to weigh dust collecting system, and quality is designated as m0, unit is g;
B, portable dust collecting device is placed on tested region;
C, adjustment blower motor 3, start blower fan, make the wind speed bottom housing 8 reach 1 ~ 40m/s;
D, air enter into bottom housing 8 from system air intake airduct 9, the laying dust of bottom is purged, the laying dust that purging gets up is along with intrasystem wind is by after air inlet 5, system air-out airduct 10 is entered through fan outlet 7, after enter in air through dust settling pocket 14, under gravity, laying dust fall, enter in dust arrester installation 13, so far laying dust is all collected into;
E, close fan power, utilize electronic balance to weigh the dust collecting system after gathering dust, quality is designated as m;
Laying dust within the scope of f, laying dust concentration and different grain size calculates by formula 1 respectively:
Formula 1
In formula, JC-laying dust concentration, unit is g/m2.
When the present invention uses, accumulator, housing, support are placed in respectively on ground, keep stable, accumulator is connected with blower motor; Start blower fan, wind enters in housing from outside by system air intake airduct, and purge housing bottom laying dust, negative pressure state is in system, the laying dust that purging gets up is along with intrasystem wind is by after air inlet, enter in system air-out airduct and system air-out airduct through fan outlet, after enter in air through dust settling pocket, due to the effect of gravity, laying dust falls, and enters in 2 groups of dust arrester installations respectively, fine particle in laying dust, especially PM2.5, not easily falls, but all can be trapped by dust settling pocket in 2 root system system air-out airducts.
By changing the rotating speed of blower motor, can wind speed be regulated, and then change the purging ability to housing bottom laying dust.Due to system the laying dust that purges out can be trapped completely, under therefore can simulating different wind conditions, the production of airborne dust, and then can take preventive measures targetedly, the generation of prevention airborne dust.