Air sampler


G01N1/26 - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (separating components of materials in general B01D, B01J, B03, B07; apparatus fully provided for in a single other subclass, see the relevant subclass, e.g. B01L; measuring or testing processes other than immunoassay, involving enzymes or micro-organisms C12M, C12Q; investigation of foundation soil in situE02D0001000000; monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N0011000000; sensing humidity changes for compensating measurements of other variables or for compensating readings of instruments for variations in humidity, seeG01D; or the relevant subclass for the variable measuredtesting or determining the properties of structures G01M; measuring or investigating electric or magnetic properties of materials G01R; systems in general for determining distance, velocity or presence by use of propagation effects, e.g. Doppler effect, propagation time, of reflected or reradiated radio waves, analogous arrangements using other waves G01S; determining sensitivity, graininess, or density of photographic materials G03C0005020000; testing component parts of nuclear reactors G21C0017000000)
G01N1/22 - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (separating components of materials in general B01D, B01J, B03, B07; apparatus fully provided for in a single other subclass, see the relevant subclass, e.g. B01L; measuring or testing processes other than immunoassay, involving enzymes or micro-organisms C12M, C12Q; investigation of foundation soil in situE02D0001000000; monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N0011000000; sensing humidity changes for compensating measurements of other variables or for compensating readings of instruments for variations in humidity, seeG01D; or the relevant subclass for the variable measuredtesting or determining the properties of structures G01M; measuring or investigating electric or magnetic properties of materials G01R; systems in general for determining distance, velocity or presence by use of propagation effects, e.g. Doppler effect, propagation time, of reflected or reradiated radio waves, analogous arrangements using other waves G01S; determining sensitivity, graininess, or density of photographic materials G03C0005020000; testing component parts of nuclear reactors G21C0017000000)

 

The invention relates to the sampling of air, in particular, the ambient atmosphere for the detection and measurement of atmospheric pollution. The sampler contains a chamber for air flow, inlet and outlet for air, means for supplying liquid to the air passing through the camera to capture any particles present in the air stream. The sampler contains a means for accumulating the exciting fluid and any captured particles and their deposition in the accumulation tank. The sampler includes means for returning accumulated exciting fluid into the chamber for flow of air, means to detect the presence of bubbles in the return fluid, which ensures a fresh supply of the exciting fluid in the air passing through the chamber for air flow and means for accumulating the sample fluid and exciting any, contained particles that may be in storage capacity. The invention allows for the accumulation of cumulative samples from large volumes of air in a small volume of liquid. Samples may be stored refrigerated for storage and subsequent analysis. 10 C.p. f-crystals, 2 Il.

In addition, successive samples may be selected automatically. These samples can be stored refrigerated to store them for later analysis.

According to the present invention, air sampler contains a chamber for air flow with inlet for air and an outlet for air, means for supplying liquid to the air passing through the chamber so that it has captured any particles contained in the air stream, means for accumulating the exciting fluid and any trapped particles and their deposition in the accumulation tank, means for returning the accumulated exciting fluid into the chamber for flow of air, means to detect the presence of bubbles in the return fluid and to supply fresh exciting fluid in the air passing through the chamber for air flow, and means for accumulating samples of the exciting liquid, and any of the contained particles that may be present in storage capacity.

Further, for example only be described variant embodiment of the invention with reference to the accompanying drawings, in which: Fig. is ka air in Fig.1.

As shown in Fig.1, the sampler 1 air used for analysis of biological analyzed substances, contains a camera 2 for a flow of air having an inlet opening 3 for air discharge outlet 4 for air.

Tool 5 move air, preferably, the suction fan draws ambient air with a flow rate of 500-1000 l/min through the inlet opening 3 and then through the chamber 2 and releases it back into the atmosphere through the outlet 6.

Camera 2 for air flow contains a cyclone separator 7 for separating air from liquid, through which the forced air passes.

The tool containing the nozzle 8, provides a supply of fluid in the air passing through the inlet opening 3 for air. A cyclone separator 7 extracts the liquid and any captured her particles and releases it from the camera 2 to the air flow first through the channel 9 through which it passes to storage tank 12, one channel single-channel peristaltic pump 13 and channel 14. Accumulation tank 12 is located inside the cooled thermoelectric Peltier holder 15 to maintain the temperature of the tank contents within 2-8°With that, you need the AMI can be conducted such analyses, as polymerase chain reaction, the analysis of culture on agar plates or immunological research.

The holder 15 also contains a bulb 16, 17, 18 and 19 for samples.

Channel 9 has large pores (e.g. 25 μm) of the filter unit 25 for filtering large particles present in the collected air, which is not suitable for a particular analysis. For example, they may be soot from diesel fuel. However, the filter unit 25 provides the passage through it of soluble analyzed substances or decomposed substances in the form of fine particles, such as bacteria and viruses.

The sampler 1 also contains a tool that provides recycling, to return the accumulated exciting fluid from the reservoir 12 into the chamber 2 to the air stream, where it is released into the air flowing into the cyclone 7. These tools contain the suction line 30, the tool 31 detection of bubbles, the pinch valve 32 and the exhaust line 33 passing through the other of the three channels of the pump 13. The tool 31 detection of bubbles connected to an electronic circuit that includes a programmable timer 34 through line 35 to the transmission of electronic signals. The circuit comprises a control microprocessor.

The reservoir 36 sodera, such as Tween-20, and 10 mm HEPES buffer solution of N-2-hydroxyethylpiperazine-N1-2 econsultancy, with pH value of 7.5. Line 33 provides the direction of this fluid from the reservoir 36 through the pinch valve 32 and feed her through a tube needle gauge stainless steel, which forms the nozzle 8, the inlet 3 to the air with a flow rate of about 2.0 ml/min

Aerosol particles captured by the stream of the liquid out of the chamber 2 to flow of air (through a standard fitting Luera) and through the pump 13 and are deposited in the accumulation tank 12.

The accumulated liquid recycle from the container 12 back into the chamber 2 to flow of air through the line 30 through the tool 31 detection of bubbles, the pinch valve 32, the pump 13 and line 33. This continues until the liquid level in the tank 12 drops to the point where mainly the air but not liquid to be sucked into the line 30. When the captured air reaches tools 31 detection of bubbles on line 35 sends an electronic signal to the microprocessor of the electronic circuit that includes a programmable timer 34. Then, the microprocessor controls the pinch valve 32 so that during a predetermined period of time fresh addictive valve 32, the pump 13, line 33 and the nozzle 8.

After a predetermined period of time, the pinch valve is open so that the system returns to the operation in the recirculation mode, which continues until the liquid level in the tank 12 again will not fall and will again sucked the air.

The time delay programmed into the system so as to ensure the achievement of the fluid coming from the refilled tank 12, the means 31 detection of bubbles.

In addition, the timer 34 is entered the program run to ensure that the initial charging of the system.

As mentioned above, the pump 13 is a single-channel pump. The two channels of the pump used to pump fluid into the chamber 2 for air flow and suction. The remaining channel is used for the absorption of small volumes of liquid for release in the selected one or more of the tubes 16, 17, 18 and 19 for samples on line 39 and through three-way valves 40, 41 and 42 (see Fig.2).

In this example, the flow rate of the exciting liquid in the chamber 2 for air flow and the cyclone 7 is about 2.0 ml/min, and the sample for analysis can be discharged with a significantly lower flow rate, comprising about 50 μl/min using a tube of a smaller caliber. This allows Naka is allenna embodiment of the invention used four bulbs for samples (16-19) and thus, the possible current control with 8-hour work shifts or within 24 h a day without presence of the operator. In addition, programmable timer 34 provides for the deployment of equipment and then automatically bring it into action in advance, up to one week, at specific points in time. For the four samples required three-way valves (40-42) for directing streams of samples.

The accumulated samples are then analyzed in the usual way.

Claims

1. The sampler (1) air containing chamber (2) for flow of air having an inlet opening (3) for air and the outlet opening (4) for the air, means (8) for the supply of liquid in the air passing through the chamber (2) thus, in order to capture any particles present in the air stream, means (9) for accumulation of the exciting fluid and any trapped her particles and their deposition in the storage tank (12), means for returning the accumulated exciting fluid in the chamber (30, 32, 33) for air flow, means (31) for detecting the presence of bubbles in the return fluid, which ensures a fresh supply of the exciting fluid (37) in the air about what it contains particles, that may be in storage capacity.

2. The sampler (1) air under item 1, which includes a programmable timer (34) to obtain air samples at given points in time.

3. The sampler (1) air under item 2, which contains a microprocessor to control the sampler (1).

4. The sampler (1) air according to any one of paragraphs.1-3, which ensures the supply of fresh exciting fluid (37), when the level in the storage tank (12) falls to a level at which enjoys air through the return of the accumulated liquid is detected by means (31) for the detection of bubbles.

5. The sampler (1) air according to any one of paragraphs.1-4, which includes many flasks (17, 18, 19) for samples and means (39) for drainage to take her into the flask.

6. The sampler (1) air according to any one of paragraphs.1-5, which contains a three-channel pump (13) and a plurality of tubes (16, 17, 18, 19) for samples in which the two channels of the pump (13) is designed to pump liquid into the chamber (2) for air flow and pumping from it, and the third channel is for drawing liquid and delivering it to the selected flask samples.

7. The sampler (1) air on p. 6, in which the pump is a single channel slango air, which draws in ambient air with a flow rate of 500-1000 l/min through the inlet opening (3) for air.

9. The sampler (1) air on p. 6, in which the third channel is used for the absorption of small volumes of fluid to be released in selected more than one bulb.

10. The sampler (1) air on p. 6, in which the bulb (16, 17, 18, 19) sample has a volume of about 25 ml, and the sample has a volume of about 10 ml.

11. The sampler (1) air on p. 6, in which many flasks (16, 17, 18, 19) located inside a cooled holder (15) to maintain the temperature of their contents in the range of 2 to 8°C.



 

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FIELD: automatical aids for sampling liquids.

SUBSTANCE: system for sampling and delivering filtrate has filter submerged into tested medium and connected with collecting tank and vacuum pressure source which is connected with top hole of collecting tank by means of pneumatic pipe. System has sample receiving tank connected with collecting tank and control unit which has first output to be connected with vacuum pressure source. Collecting tank has two separated chambers - washing chamber and dispatching chamber. Lower hole of washing chamber has to be lower hole of collecting tank and side hole of dispatching chamber has to be side hole of collecting tank. Floating valve is installed inside washing chamber to shut off lower and top holes. Filter is connected with lower hole of collecting tank through sampling pipe. Side hole of collecting tank is connected with lower hole of tank for receiving samples through sampling pipe. Flow-type sensor and check valve are installed inside transportation pipe. Output of flow-type sensor is connected with input of control unit; second output of control unit is connected with control input of analyzer.

EFFECT: improved precision of measurement of sample ion composition; prolonged service life of filter.

1 cl, 1 dwg

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