CN204718913U - The sampling apparatus of No clean particle concentration and sample devices - Google Patents
The sampling apparatus of No clean particle concentration and sample devices Download PDFInfo
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- CN204718913U CN204718913U CN201520498554.9U CN201520498554U CN204718913U CN 204718913 U CN204718913 U CN 204718913U CN 201520498554 U CN201520498554 U CN 201520498554U CN 204718913 U CN204718913 U CN 204718913U
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Abstract
The utility model relates to particle sampling technical field in kitchen fumes class waste gas, especially relates to a kind of sampling apparatus of No clean particle concentration, and relates to a kind of sample devices of No clean particle concentration.The utility model, by dismountable sampling apparatus, detects the concentration of particle based on weight method; Described sampling apparatus comprises the first half shells, the second half shell and fume filtering elements; Described fume filtering element is positioned at the cavity that described the first half shells become with described the second half hull shapes; Described fume filtering element comprises the first membrane structure and the second membrane structure.Described sample devices comprises described sampling apparatus.The utility model solves the particle concentration that existing method of testing is not suitable for kitchen fumes class and detects, and work on hand amount is large and chemical reagent such as sampling apparatus manual cleaning is difficult, a large amount of use phenixin and test the problems such as inaccurate.
Description
Technical field
The utility model relates to particle sampling technical field in kitchen fumes class waste gas, especially relates to a kind of sampling apparatus of No clean particle concentration, and relates to a kind of sample devices of No clean particle concentration.
Background technology
Kitchen fumes refers to grease, organic matter and the heat resolve thereof or pyrolysis product that volatilize in food cooking, process.Kitchen fumes is a kind of mixture be made up of gaseous state, liquid and solid-state 3 kinds of form particles and air, and wherein most of particle is the high viscosity particle of mist of oil, water smoke formation, and fraction is solid particulate matter; Main organic principle in kitchen fumes is aldehyde, ketone, hydrocarbon, fatty acid, alcohol, aromatics, lactone, heterogeneous ring compound etc.The general < of particle diameter 10 μm of liquid, solid phase particles thing; Gaseous parts then discharges as volatile organic matter (VOCs), detectable VOCs300 many kinds.Kitchen fumes belongs to low-altitude discharged more, more to the contribution of the Atmospheric particulates such as PM2.5, and oil smoke can be formed directly in PM2.5 after discharging on the one hand, and complicated photochemical reaction can occur the VOCs of discharge on the other hand in atmosphere, also can form PM2.5 and O
3pollute.
Along with the raising of socioeconomic development and the income of residents, in each city, large cafeteria is in full flourish, and while facilitating people's life, fume pollution also brings new problem to urban environment.At present in Surveying of Urban Air Pollution Sources, kitchen fumes pollutes and industrial pollution and automobile exhaust pollution become main pollution source in the lump.In The Surroundings in Cities pollution complaint, food and beverage sevice every trade industry fume pollution is complained and is accounted for about 50% of total complaint amount." surrounding air fine particle pollution prevention technique policy " (exposure draft) that Chinese Ministry of Environmental Protection announces a few days ago also proposes, and will pollute to reduce PM2.5 discharge by controlling food and drink.
Current China continues to use " cooking fume emission standard " (GB18483-2001) of calendar year 2001 issue always, and the highest permission concentration of emission defining catering trade unit oil smoke in standard is 2.0mg/m
3but, the not emission limit of regulation particle and VOCs; And define the analytical approach adopting metal filter cylinders absorption and Infrared Spectralcolorimetry Detect Oil smoke density in a standard.The method adopts the gas in isokinetic sampling's method extraction oil smoke aiutage, is adsorbed on by oil smoke in oil fume metal filter cylinders; The collection filter core that have collected oil smoke is placed in polytetrafluoroethylene sleeve with cover, after going back to laboratory, carries out ultrasonic cleaning with phenixin as solvent, move into constant volume in color comparison tube, with the content of Infrared Spectralcolorimetry Detect Oil cigarette.This standard sample and analytical approach have following technical disadvantages: the metal filter cylinders used during (1) oil smoke detects all needs cleaning after testing at every turn, and its cleaning operation is complicated and consume the chemical reagent such as a large amount of phenixin; (2) sampling time is high with sampling working condition requirement, and some small-sized food and drink are difficult to meet this requirement; (3) infrared spectrophotometer measures CH, CH
2, CH
3based on the absorbance at key band place, tested object is not comprehensive, representative poor; (4) test operation is complicated, and workload is large.
Adjusted in some areas catering trade emission standard also adds the emission limit of particle and VOCs, but existing " in Concentration in Fixed Pollutants Source particle measure with the gaseous contaminant method of sampling " (GB/T16157-1996) the detection of the particle concentration of inapplicable kitchen fumes class, main cause is as follows: (1) this method of testing is only applicable to particle mass concentration higher than 50mg/m
3, measure lower than 50mg/m
3particle time error larger; (2) this method of testing adopts glass fiber filter cylinder filtration of particulate matters, and glass fiber filter cylinder lipophilicity is poor, and oil smoke class organic particulate matter bearing capacity ability is low, easily penetrates; (3) glass fiber filter cylinder complex contour, need the cleaning operation parts such as sampling mouth, front bend pipe, sampling pipe main body being carried out to complexity, difficulty, and cleaning needs to consume the chemical reagent such as acetone, phenixin after each sampling; (4) make its humidity comparatively large because food-steaming etc. operates in kitchen fumes, and glass fiber filter cylinder affects by oil smoke high humility, its intensity reduces obviously, when using tweezers gripping filter cylinder after sampling, easily cause filter cylinder broken, cause test error, high to operating personnel's technical requirement.
To sum up, existing particle concentration detection means is not suitable for the detection of kitchen fumes class high viscosity, particle concentration based on organism, its sampling apparatus manual cleaning difficulty, uses chemical reagent and tests the problems such as inaccurate in a large number.
Therefore, be badly in need of for the problems referred to above sampling apparatus and sample devices that a kind of new No clean particle concentration is provided.
Utility model content
The purpose of this utility model is, provides a kind of sampling apparatus of No clean particle concentration, advantages such as having No clean, easily use, be easy and simple to handle, and to the sampling of the particle concentration of oil smoke class, test more science and accurately.
The purpose of this utility model is also, provides a kind of sample devices of No clean particle concentration, advantages such as having No clean, easily use, be easy and simple to handle, and to the sampling of the particle concentration of oil smoke class, test more science and accurately.
Based on above-mentioned first object, the utility model provides a kind of sampling apparatus of No clean particle concentration, and described sampling apparatus comprises the first half shells, the second half shell and fume filtering elements; Described fume filtering element is positioned at the cavity that described the first half shells become with described the second half hull shapes;
Described fume filtering element comprises the first membrane structure and the second membrane structure;
The entrance of described sampling apparatus is arranged on described the first half shells, and its outlet is arranged on described the second half shells; Described the first half shells, described first membrane structure, described second membrane structure and described the second half shells are followed successively by along described entrance to the direction of described outlet;
Described first membrane structure comprises mekralon filter membrane or poly tetrafluoroethylene; Described second membrane structure comprises glass fiber filter.
Further, described sampling apparatus also comprises oil smoke protective film; Described oil smoke protective film is arranged at the periphery of described the first half shells.
Further, described fume filtering element comprises sampling pipe and filter core cover, and described sampling pipe is connected with described filter core cover, the inner chamber of described sampling pipe and the inner space of described filter core cover;
It is inner that described first membrane structure and described second membrane structure lay respectively at described filter core cover; Described first membrane structure relative to described second membrane structure, near described sampling pipe;
Described sampling pipe stretches out described the first half shells.
Further, described first membrane structure also comprises isolation supporting network; Relative to described mekralon filter membrane or described poly tetrafluoroethylene, described isolation supporting network is near described second membrane structure.
Further, described second membrane structure also comprises filter membrane protecting wire net; Relative to described glass fiber filter, described filter membrane protecting wire net is away from described first membrane structure.
Further, described the first half shells comprise gland and the first housing;
Described first housing is between described gland and described the second half shells, and described first housing becomes described cavity with described the second half hull shapes;
Described gland and described the second half shells removably connect.
Further, the first O-ring seal is provided with between described gland and described first housing; The second O-ring seal is provided with between described filter core cover and described the second half shells.
Further, described first outside is provided with pillar, and described pillar stretches out described gland, and the shape of described pillar and the shape of described sampling pipe adapt;
Described sampling pipe inserts and stretches out described pillar, and the outer wall of described sampling pipe contacts with the inner wall sealing of described pillar.
Based on above-mentioned second object, the utility model provides a kind of sample devices of No clean particle concentration, comprises the sampling apparatus of described No clean particle concentration;
Also comprise sampling gun, the sampling gun interface of described sampling gun connects the outlet of described sampling apparatus.
Further, described sampling gun comprises temperature sensor, and described temperature sensor is for responding to the temperature of described sampling arrangement samples gas;
Described sampling gun also comprises pitot tube anemometer, and described pitot tube anemometer is for measuring the flow velocity of described sampling arrangement samples gas;
Described sampling gun also comprises controller, and described controller is electrically connected with described temperature sensor, described pitot tube anemometer, for receiving information and being presented at the display screen of described controller.
In sum, the sampling apparatus of the No clean particle concentration that the utility model provides, carries out the sampling of particle by dismountable sampling apparatus; Described sampling apparatus adopts described the first half shells and described the second half shells to protect described fume filtering element, decreases the flow velocity of oil smoke to the impact of described fume filtering element testing result; Described sampling apparatus adopts double membrane structure to achieve effective detection of kitchen fumes class high viscosity, particle concentration based on organism, and its test structure accurately and reliably; Specifically, described first membrane structure comprises mekralon filter membrane or poly tetrafluoroethylene, for filtering, absorbing the liquid oils in oil smoke, utilize the ultra-fine fiber construction of the filter membrane of described first membrane structure and good hydrophobic oleophilic oil, oil mass can be absorbed fast, weight 6-20 oil mass doubly own can be reached; Described second membrane structure comprises glass fiber filter, has good hydrophobicity, for filtering other particles in oil smoke; Described first membrane structure and described second membrane structure greatly reduce the interference of the water in the particle of kitchen fumes on Material selec-tion; Described first membrane structure and described second membrane structure lay respectively in described fume filtering element, by changing disposable described fume filtering element, avoid the problem of described sampling apparatus manual cleaning difficulty, it also avoid the problem that need use toxic reagent because of cleaning, it be simple to operation, cost is low, testing procedure and process simple; Particle is successively through described first membrane structure, described second membrane structure, on the filter membrane adopting duplicature filter type the particle of oil smoke class in food and drink waste gas to be collected described first membrane structure and on the filter membrane of described second membrane structure, the weight before and after described fume filtering element detection particle is measured by overall weight method, according to the concentration of weight difference count particles thing, both laboratory had been decreased to the measuring fixed amount of cleaning fluid, drying and weighing operation, also save a large amount of analytical work amounts, particle concentration is tested simple, substantially increase work efficiency.
The sample devices of the No clean particle concentration that the utility model provides, there is the advantage of the sampling apparatus of No clean particle concentration, described sample devices adopts disposable fume filtering element, features such as making to have No clean when detecting the particle concentration of oil smoke class, easily using, easy and simple to handle, test result is more accurate.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the sampling apparatus of the No clean particle concentration that Fig. 1 provides for the utility model embodiment two;
The STRUCTURE DECOMPOSITION figure of the sampling apparatus of the No clean particle concentration that Fig. 2 provides for the utility model embodiment two;
The structural representation of the sample devices of the No clean particle concentration that Fig. 3 provides for the utility model embodiment three;
Fig. 4 is the partial enlarged drawing of the sample devices of the No clean particle concentration shown in Fig. 3;
Reference numeral:
1-the first half shell; 11-gland; 12-first housing;
121-pillar; 2-the second half shell;
3-fume filtering element; 31-first membrane structure; 311-isolates supporting network;
32-second membrane structure; 321-filter membrane protecting wire net; 33-sampling pipe;
34-filter core cover; 4-entrance; 5-exports;
6-oil smoke protective film; 7-first O-ring seal; 8-second O-ring seal;
9-sampling gun; 91-sampling apparatus; 92-temperature sensor;
93-pitot tube anemometer; 94-controller.
Embodiment
Be clearly and completely described the technical solution of the utility model below in conjunction with accompanying drawing, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Embodiment one
Present embodiments provide a kind of detection method of No clean particle concentration, the method, by dismountable sampling apparatus, detects the concentration of particle based on weight method;
Described sampling apparatus comprises the first half shells, the second half shell and fume filtering elements; Described fume filtering element is positioned at the cavity that described the first half shells become with described the second half hull shapes; The first half shells, the second half shells may be, but is not limited to and adopt stainless steel or polytetrafluoroethylmaterial material;
Described fume filtering element comprises the first membrane structure and the second membrane structure;
The entrance of described sampling apparatus is arranged on described the first half shells, and its outlet is arranged on described the second half shells; Described the first half shells, described first membrane structure, described second membrane structure and described the second half shells are followed successively by along described entrance to the direction of described outlet; Preferably, the entrance of described sampling apparatus is precut taper sampling mouth, can select suitable precut cross section according to the flow velocity of sample gas;
Described first membrane structure comprises the hydrophobic membrane filtration such as mekralon filter membrane or poly tetrafluoroethylene; Described second membrane structure comprises glass fiber filter.Described first membrane structure, described second membrane structure adopt above-mentioned material, greatly reduce the weight of described fume filtering element, can make Weight control within 15g; Wherein, described mekralon filter membrane, be applicable to detected temperatures not higher than the particle of 100 DEG C of oil smoke classes, its intensity is good, can not be out of shape, and does not have medium to come off, and improves accuracy and the precision of particle concentration test; Described poly tetrafluoroethylene, is applicable to detected temperatures not higher than the particle of 260 DEG C of oil smoke classes; Described glass fibre membrane, is applicable to detected temperatures not higher than the particle of 260 DEG C of oil smoke classes.
Described sampling apparatus also comprises oil smoke protective film; Described oil smoke protective film is arranged at the periphery of described the first half shells.Described oil smoke protective film surface area is not less than the external surface area of described the first half shells, and described oil smoke protective film can cover the periphery of described the first half shells except described entrance; The surface area of described oil smoke protective film can also be greater than the external surface area of described the first half shells, described oil smoke protective film can cover the periphery of described the first half shells except described entrance, and part covers the periphery of the periphery of described the second half shells or described the second half shells except described outlet.By adopting disposable described oil smoke protective film, to prevent oil smoke at the outside surface of described sampling apparatus, especially described the first half shells outside surface absorption and pollute; Avoid the outside surface of described sampling apparatus, the cleaning operation of the outside surface of especially described the first half shells.
It is polytetrafluoroethylene film, fire-retardant PP film, heat resistant rubber film or other resistance to thermal compound film etc. that the material of described oil smoke protective film may be, but is not limited to; Preferably, the thickness of described oil smoke protective film is no more than 0.8mm.
The detection method of the particle concentration of No clean described in the present embodiment carries out the sampling of particle by dismountable sampling apparatus; Described sampling apparatus adopts described the first half shells and described the second half shells to protect described fume filtering element, decreases the flow velocity of oil smoke to the impact of described fume filtering element testing result; Described sampling apparatus adopts double membrane structure to achieve effective detection of kitchen fumes class high viscosity, particle concentration based on organism, and its test structure accurately and reliably; Specifically, described first membrane structure comprises mekralon filter membrane or poly tetrafluoroethylene, for filtering, absorbing the liquid oils in oil smoke, utilize the ultra-fine fiber construction of the filter membrane of described first membrane structure and good hydrophobic oleophilic oil, oil mass can be absorbed fast, weight 6-20 oil mass doubly own can be reached; Described second membrane structure comprises glass fiber filter, has good hydrophobicity, for filtering other particles in oil smoke; Described first membrane structure and described second membrane structure greatly reduce the interference of the water in the particle of kitchen fumes on Material selec-tion; Described first membrane structure and described second membrane structure lay respectively in described fume filtering element, by changing disposable described fume filtering element, avoid the problem of described sampling apparatus manual cleaning difficulty, it also avoid the problem that need use toxic reagent because of cleaning, it is simple to operation, cost is low, testing procedure and process simple, and is easy to batch micro operations; Particle is successively through described first membrane structure, described second membrane structure, on the filter membrane adopting duplicature filter type the particle of oil smoke class in food and drink waste gas to be collected described first membrane structure and on the filter membrane of described second membrane structure, the weight before and after described fume filtering element detection particle is measured by overall weight method, according to the concentration of weight difference count particles thing, both laboratory had been decreased to the measuring fixed amount of cleaning fluid, drying and weighing operation, also save a large amount of analytical work amounts, particle concentration is tested simple, substantially increase work efficiency.
The detection method of the particle concentration of No clean described in the present embodiment comprises the steps:
Step 100, measure described fume filtering element net weight, its net weight value m1;
Step 200, assemble described sampling apparatus; Connect described sampling apparatus and sampling gun;
The entrance of step 300, described sampling apparatus puts into flue or chimney back to sampling air flow, sets sampling flow and the volume V of described sampling gun; Rotate described sampling gun, make the entrance of described sampling apparatus just sample to sampling air flow;
After step 400, sampling, described fume filtering element is removed moisture and weighs, and records this gravimetric value m2 that weighs;
Step 500, count particles substrate concentration, computing formula is: (m2-m1)/V.
Specifically, comprise the steps:
The first, before sampling, described fume filtering element prepares: should get out described fume filtering element before each test.Disposable described fume filtering element is assembled, then at least 1h is dried under described fume filtering element being put into the condition of inherent 100 ± 5 DEG C of baking oven (precision ± 5 DEG C), take out the bracing frame of described fume filtering element in exsiccator (silica-gel desiccant) cool at least 2h to room temperature, then analytical balance (resolution is 0.1mg/0.01mg) is used to weigh until constant weight m1 (change of weighing for twice is namely no more than 0.5mg), namely described fume filtering element net weight value m1; Then seal the entrance of described fume filtering element, and put into plastic sealing bag, load in protection box;
Need described fume filtering element to be numbered before weighing, each weighing component must keep uniqueness and trackability.The running time to be shortened when weighing as far as possible and eliminate the impact of electrostatic.Record described fume filtering element bare weight weighing result accurately to 0.5mg;
The second, assemble described sampling apparatus and airtight test: first taken out in plastic sealing bag by described fume filtering element, and put into the cavity that described the first half shells become with described the second half hull shapes, complete the assembling of described sampling apparatus; Again the outlet of described sampling apparatus is connected with sampling gun; Finally disposable described oil smoke protective film on described sampling apparatus outside surface cover, namely the outside surface of described the first half shells puts disposable described oil smoke protective film, seals the entrance of described sampling apparatus; Then open sampling gun, namely open the sampling pump in sampling gun, extraction system negative pressure is 6 ~ 8kPa, adopts discharge method to carry out airtight test, and quantity of gas leakage is not more than 400 ~ 600ml/2 minute or the decline of system negative pressure is no more than 0.2 ~ 0.4kPa in 30s;
Three, spot sampling: the entrance of the described sampling apparatus that breaks a seal, the entrance of the described sampling apparatus assembled is put into flue or chimney back to sampling air flow, according to correlation technique in GB/T16157-1996 specify select sampled point, described sampling apparatus sampling mouth sample, in described sampling gun, set sampling flow and volume V; Rotate described sampling gun, make the entrance of described sampling apparatus just sample to sampling air flow, the speed such as control are between 85% ~ 115%, and sampling volume V is not less than 0.8m
3;
Four, the weighing of described fume filtering element after sampling: taken off from described sampling apparatus by described fume filtering element, and seal the entrance of described fume filtering element, loads protection box, takes back lab analysis after putting into plastic sealing bag; For the impact of organic component volatilization on test result accuracy in the particle of oil smoke class in minimizing dry run, described fume filtering element drying employing two kinds of methods after sampling:
One is air drying method, be applicable to the described fume filtering element that sampling air flow humidity is lower, being taken out in sealing bag by described fume filtering element after sampling puts into the bracing frame of exsiccator, new rebirth silica gel drying agent (variable color rate is not more than 10%) is first put in exsiccator, normal temperature and pressure is no less than 24 hours lower drying time, then analytical balance (resolution is 0.1mg/0.01mg) is used to weigh until constant weight (change of weighing for twice is namely no more than 0.5mg), filter core weighing result m2 after record sampling;
Two is vacuum freeze-drying methods, be applicable to the described fume filtering element that sampling air flow humidity is larger, adopt gland type vacuum freeze drier dry, described fume filtering element is taken out in sealing bag and puts into pallet, drying program is: prefreezing process (middling speed is freezing is down to-20 DEG C ~-35 DEG C, keeps 2 ~ 4 hours) → lyophilization (is warming up to-5 DEG C ~ 5 DEG C, dry 1 ~ 2h afterwards,) → parsing-desiccation (temperature rise to 15 ~ 25 DEG C, dry 2 ~ 4h); Then put into exsiccator normal temperature and pressure and be no less than 24 hours lower drying time, then analytical balance (resolution is 0.1mg/0.01mg) is used to weigh until constant weight (change of weighing for twice is namely no more than 0.5mg), filter core weighing result m2 after record sampling;
Five, count particles substrate concentration: particle concentration=(m2-m1)/V.For ensureing the accuracy of test, on filter membrane, the particle weightening finish of oil smoke class should be no less than 3mg.
Preferably, the detection limit of the particle of the oil smoke class of this method is not more than 1mg/m
3.
Air drying method, vacuum freeze-drying method are selected according to the humidity condition of sampling air flow.
Embodiment two
In order to better implement the detection method of the described No clean particle concentration of the utility model embodiment one, the utility model additionally provides a kind of sampling apparatus for realizing No clean particle concentration of the present utility model, is described in further detail below in conjunction with the embodiment of accompanying drawing to the sampling apparatus of No clean particle concentration of the present utility model.
Shown in Fig. 1, Fig. 2, present embodiments provide a kind of sampling apparatus of No clean particle concentration; Fig. 1 is the structural representation of described sampling apparatus; Fig. 2 is the STRUCTURE DECOMPOSITION figure of described sampling apparatus; In order to display structure clearly, Figure 1 shows that the cut-open view of sampling apparatus, the fume filtering element shown in Fig. 2 is shown as cut-open view.
Shown in Fig. 1, Fig. 2, the sampling apparatus of the No clean particle concentration that the present embodiment provides, described sampling apparatus comprises the first half shells 1, the second half shell 2 and fume filtering elements 3; Described fume filtering element 3 is positioned at the cavity that described the first half shells 1 are formed with described the second half shells 2;
Described fume filtering element 3 comprises the first membrane structure 31 and the second membrane structure 32;
The entrance 4 of described sampling apparatus is arranged on described the first half shells 1, and its outlet 5 is arranged on described the second half shells 2; Described the first half shells 1, described first membrane structure 31, described second membrane structure 32 and described the second half shells 2 are followed successively by along described entrance 4 to the direction of described outlet 5;
Described first membrane structure 31 comprises mekralon filter membrane or poly tetrafluoroethylene; Described second membrane structure 32 comprises glass fiber filter.
Described sampling apparatus also comprises oil smoke protective film 6; Described oil smoke protective film 6 is arranged at the periphery of described the first half shells 1.
The sampling apparatus of the particle concentration of No clean described in the present embodiment, have the advantage of the detection method of No clean particle concentration described in embodiment one, the advantage of the detection method of the described No clean particle concentration disclosed in embodiment one is in this no longer repeated description.
First membrane structure 31 described in the present embodiment, described second membrane structure 32, described oil smoke protective film 6 have a detailed description in embodiment one, no longer repeat at this.
In the present embodiment possibility, described fume filtering element 3 comprises sampling pipe 33 and filter core cover 34, and described sampling pipe 33 is connected with described filter core cover 34, the inner chamber of described sampling pipe 33 and the inner space of described filter core cover 34;
It is inner that described first membrane structure 31 and described second membrane structure 32 lay respectively at described filter core cover 34; Described first membrane structure 31 relative to described second membrane structure 32, near described sampling pipe 33;
Described sampling pipe 33 stretches out described the first half shells 1.By described sampling pipe 33 so that particle enters described filter core cover 34, and then gather particle by described first membrane structure 31 and described second membrane structure 32; By described filter core cover 34 to protect described first membrane structure 31 and described second membrane structure 32, avoid destroying described first membrane structure 31 and described second membrane structure 32 when taking described fume filtering element 3.
Wherein, described sampling pipe 33 can be straight tube, also can be external bend pipe, specifically can set according to the direction of sampling air flow;
The material of described sampling pipe 33, filter core cover 34, isolation supporting network 311, filter membrane protecting wire net 321 can be not limited to copper, iron, stainless steel, aluminium, aluminium alloy, plastics, pottery etc. respectively; Preferably, the material of described sampling pipe 33, filter core cover 34, isolation supporting network 311, filter membrane protecting wire net 321 can be not limited to the light materials such as aluminium, aluminium alloy, plastics respectively; Preferably, described sampling pipe 33, filter core cover 34, isolation supporting network 311, filter membrane protecting wire net 321 material be plastics, described plastics be polypropylene, PVDF, PFTE one or more.
Described first membrane structure 31 also comprises isolation supporting network 311; Relative to described mekralon filter membrane or described poly tetrafluoroethylene, described isolation supporting network 311 is near described second membrane structure 32.Isolate the filter membrane of described first membrane structure 31 and the filter membrane of described second membrane structure 32 by described isolation supporting network 311, protect the filter membrane of the filter membrane of described first membrane structure 31 and described second membrane structure 32.
Described second membrane structure 32 also comprises filter membrane protecting wire net 321; Relative to described glass fiber filter, described filter membrane protecting wire net 321 is away from described first membrane structure 31.Protected the filter membrane of described second membrane structure 32 by described filter membrane protecting wire net 321, namely protect described glass fiber filter.
In the another possibility of the present embodiment, described the first half shells 1 comprise gland 11 and the first housing 12;
Described first housing 12 is between described gland 11 and described the second half shells 2, and described first housing 12 forms described cavity with described the second half shells 2;
Described gland 11 removably connects with described the second half shells 2.When fastening described sampling apparatus, described first housing 12 and described the second half shell 2 geo-stationary, only need turn or mobile described gland 11, protect the described fume filtering element 3 being positioned at the described cavity that described first housing 12 is formed with described the second half shells 2, reduce and cause the damage to described fume filtering element 3 structure because assembling described sampling apparatus; Protect described fume filtering element 3 by described gland 11, described first housing 12 and described the second half shells 2, decrease the flow velocity of oil smoke to the impact of described fume filtering element 3 testing result.
The connected mode of described gland 11 and described the second half shells 2 can for being threaded, buckle is connected, and also can be other connected modes; Preferably; Described gland 11 is threaded connection with described the second half shells 2.
The material of described gland, described first housing and described the second half shells is respectively copper, iron, stainless steel, aluminium, aluminium alloy, plastics, pottery etc.; Preferably, described gland, described first housing and described the second half shells adopt identical material, and its material is stainless steel.
Gathering the accuracy of particle in order to improve described fume filtering element 3, between described gland 11 and described first housing 12, being provided with the first O-ring seal 7; The second O-ring seal 8 is provided with between described filter core cover 34 and described the second half shells 2; Leak to prevent sample gas.
In order to protect described sampling pipe 33, at described first housing 12 outer setting pillar 121, described pillar 121 stretches out described gland 11, and the shape of described pillar 121 and the shape of described sampling pipe 33 adapt;
Described sampling pipe 33 inserts and stretches out described pillar 121, and the outer wall of described sampling pipe 33 contacts with the inner wall sealing of described pillar 121; The entrance of described sampling pipe 33 is precut taper sampling mouth, can select suitable precut cross section according to the flow velocity of sample gas.
That is, the entrance 4 of described sampling apparatus is the entrance of described sampling pipe 33; Described the second half shells 2 are arranged and the outlet connection be connected in described the second half shells 2, described outlet connection is the outlet 5 of described sampling apparatus.
Described the second half shells 2 also comprise netted or sieve plate shape filter membrane holder, and described filter membrane holder is connected with described outlet connection.
Embodiment three
Shown in Fig. 3, Fig. 4, this embodiment offers a kind of sample devices of No clean particle concentration, the sample devices of described No clean particle concentration comprises the sampling apparatus of the described No clean particle concentration of embodiment two; Technical scheme disclosed in embodiment two also belongs to this embodiment, the no longer repeated description of this embodiment.
The structural representation of the sample devices of the No clean particle concentration that Fig. 3 provides for the present embodiment, be shown as the state in the chamber of the rifle head insertion sample gas of sampling gun in figure, the direction of arrow shown in figure is the flow velocity direction of sample gas; Fig. 4 is the partial enlarged drawing of the sample devices of the No clean particle concentration shown in Fig. 3.
Shown in Fig. 3, Fig. 4, the sample devices of the No clean particle concentration that the present embodiment provides, comprises the sampling apparatus of described No clean particle concentration;
Also comprise sampling gun 9, the sampling gun interface of described sampling gun 9 connects the outlet of described sampling apparatus 91; To be realized the sampling of described sampling apparatus 91 about particle of embodiment two by described sampling gun 9.
Described sampling gun 9 comprises temperature sensor 92, and described temperature sensor 92 is for responding to the temperature of described sampling apparatus 91 sample gas;
Described sampling gun 9 also comprises pitot tube anemometer 93, and described pitot tube anemometer 93 is for measuring the flow velocity of described sampling apparatus 91 sample gas;
Described sampling gun 9 also comprises controller 94, and described controller 94 is electrically connected with described temperature sensor 92, described pitot tube anemometer 93, for receiving information and being presented at the display screen of described controller 94.By the flow velocity that the temperature of sample gas responded to by described temperature sensor 92, described pitot tube anemometer 93 measures sample gas, and be shown on described controller 94, make the particle concentration that people are measuring kitchen fumes class obtain more information, make particle concentration data have more comparability.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a sampling apparatus for No clean particle concentration, is characterized in that, described sampling apparatus comprises the first half shells, the second half shell and fume filtering elements; Described fume filtering element is positioned at the cavity that described the first half shells become with described the second half hull shapes;
Described fume filtering element comprises the first membrane structure and the second membrane structure;
The entrance of described sampling apparatus is arranged on described the first half shells, and its outlet is arranged on described the second half shells; Described the first half shells, described first membrane structure, described second membrane structure and described the second half shells are followed successively by along described entrance to the direction of described outlet;
Described first membrane structure comprises mekralon filter membrane or poly tetrafluoroethylene; Described second membrane structure comprises glass fiber filter.
2. the sampling apparatus of No clean particle concentration according to claim 1, is characterized in that, described sampling apparatus also comprises oil smoke protective film; Described oil smoke protective film is arranged at the periphery of described the first half shells.
3. the sampling apparatus of No clean particle concentration according to claim 1 and 2, it is characterized in that, described fume filtering element comprises sampling pipe and filter core cover, and described sampling pipe is connected with described filter core cover, the inner chamber of described sampling pipe and the inner space of described filter core cover;
It is inner that described first membrane structure and described second membrane structure lay respectively at described filter core cover; Described first membrane structure relative to described second membrane structure, near described sampling pipe;
Described sampling pipe stretches out described the first half shells.
4. the sampling apparatus of No clean particle concentration according to claim 3, is characterized in that, described first membrane structure also comprises isolation supporting network; Relative to described mekralon filter membrane or described poly tetrafluoroethylene, described isolation supporting network is near described second membrane structure.
5. the sampling apparatus of No clean particle concentration according to claim 3, is characterized in that, described second membrane structure also comprises filter membrane protecting wire net; Relative to described glass fiber filter, described filter membrane protecting wire net is away from described first membrane structure.
6. the sampling apparatus of No clean particle concentration according to claim 3, is characterized in that, described the first half shells comprise gland and the first housing;
Described first housing is between described gland and described the second half shells, and described first housing becomes described cavity with described the second half hull shapes;
Described gland and described the second half shells removably connect.
7. the sampling apparatus of No clean particle concentration according to claim 6, is characterized in that, is provided with the first O-ring seal between described gland and described first housing; The second O-ring seal is provided with between described filter core cover and described the second half shells.
8. the sampling apparatus of No clean particle concentration according to claim 7, is characterized in that, described first outside is provided with pillar, and described pillar stretches out described gland, and the shape of described pillar and the shape of described sampling pipe adapt;
Described sampling pipe inserts and stretches out described pillar, and the outer wall of described sampling pipe contacts with the inner wall sealing of described pillar.
9. a sample devices for No clean particle concentration, is characterized in that, comprises the sampling apparatus of No clean particle concentration as described in any one of claim 1-8;
Also comprise sampling gun, the sampling gun interface of described sampling gun connects the outlet of described sampling apparatus.
10. the sample devices of No clean particle concentration according to claim 9, is characterized in that, described sampling gun comprises temperature sensor, and described temperature sensor is for responding to the temperature of described sampling arrangement samples gas;
Described sampling gun also comprises pitot tube anemometer, and described pitot tube anemometer is for measuring the flow velocity of described sampling arrangement samples gas;
Described sampling gun also comprises controller, and described controller is electrically connected with described temperature sensor, described pitot tube anemometer, for receiving information and being presented at the display screen of described controller.
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| CN201520498554.9U CN204718913U (en) | 2015-07-10 | 2015-07-10 | The sampling apparatus of No clean particle concentration and sample devices |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520498554.9U CN204718913U (en) | 2015-07-10 | 2015-07-10 | The sampling apparatus of No clean particle concentration and sample devices |
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| CN204718913U true CN204718913U (en) | 2015-10-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104964891A (en) * | 2015-07-10 | 2015-10-07 | 北京市环境保护监测中心 | Detection method of no-clean particulate matter concentration as well as sampling apparatus and sampling device |
| CN106813952A (en) * | 2017-01-23 | 2017-06-09 | 浙江菲达环保科技股份有限公司 | A kind of integrated form PM2.5 sampling guns |
| CN107588994A (en) * | 2017-10-23 | 2018-01-16 | 武汉碧海云天科技股份有限公司 | A kind of road surface airborne dust trap, airborne dust detection means and detection method |
| CN113405867A (en) * | 2021-07-26 | 2021-09-17 | 天津环科环境规划科技发展有限公司 | Particulate matter sampling device and particulate matter detection device |
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2015
- 2015-07-10 CN CN201520498554.9U patent/CN204718913U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964891A (en) * | 2015-07-10 | 2015-10-07 | 北京市环境保护监测中心 | Detection method of no-clean particulate matter concentration as well as sampling apparatus and sampling device |
| CN108414386A (en) * | 2015-07-10 | 2018-08-17 | 北京市环境保护科学研究院 | The sample devices of particle concentration free of cleaning |
| CN108414386B (en) * | 2015-07-10 | 2020-04-07 | 北京市环境保护科学研究院 | Sampling equipment of no-clean particulate matter concentration |
| CN106813952A (en) * | 2017-01-23 | 2017-06-09 | 浙江菲达环保科技股份有限公司 | A kind of integrated form PM2.5 sampling guns |
| CN107588994A (en) * | 2017-10-23 | 2018-01-16 | 武汉碧海云天科技股份有限公司 | A kind of road surface airborne dust trap, airborne dust detection means and detection method |
| CN107588994B (en) * | 2017-10-23 | 2023-12-12 | 武汉碧海云天科技股份有限公司 | Pavement dust catcher, dust detection device and detection method |
| CN113405867A (en) * | 2021-07-26 | 2021-09-17 | 天津环科环境规划科技发展有限公司 | Particulate matter sampling device and particulate matter detection device |
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