CN214622215U - Filter material detection device with diluter - Google Patents
Filter material detection device with diluter Download PDFInfo
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- CN214622215U CN214622215U CN202022636058.9U CN202022636058U CN214622215U CN 214622215 U CN214622215 U CN 214622215U CN 202022636058 U CN202022636058 U CN 202022636058U CN 214622215 U CN214622215 U CN 214622215U
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Abstract
A filter material detection device with diluters comprises a plurality of diluters which are serially arranged on a sampling pipeline, and a particle counter/photometer which is serially arranged on the sampling pipeline; a valve is arranged on the sampling pipeline; the diluter is a fixed ratio diluter or an adjustable ratio diluter. The utility model discloses in, increase a plurality of diluters on the sampling pipe of upstream to adapt to the aerosol of different concentrations, make the aerosol concentration that gets into measuring device keep in the safety range of device. A plurality of diluters are added on a downstream sampling pipeline to adapt to filter materials with different filter effects, so that the concentration of aerosol entering a measuring device is kept within the safety range of the device.
Description
Technical Field
The utility model relates to a filter media detection area especially relates to a take filter media check out test set of diluter.
Background
At present, two particle counters or photometers are generally adopted in a filter medium detection device to respectively sample and measure the particle number (corresponding to the particle counter) or the concentration (corresponding to the photometer) of the aerosol at the upstream and the downstream, and the filtering efficiency of the filter medium is obtained through the measured particle number (or concentration) ratio of the aerosol at the upstream and the downstream.
Because the particle counter and the photometer are both optical measuring instruments, the measuring cavity is easily polluted by aerosol, and the concentration and the usable measuring time of the aerosol have corresponding requirements, such as the following:
for particle counters, only low concentrations of aerosol can be tested, otherwise the measurement range may be exceeded; the long service life can pollute the optical components, block the pump body and cause failure;
in the case of photometers, the concentration range that can be measured is wider, but aerosol with excessive concentration or measurement for a long time still causes pollution of optical components, blockage of a pump body and damage.
In the detection, a mode of adding a diluter (fixed dilution ratio) in front of an upstream particle counter (or photometer) is adopted, so that the sampling concentration is reduced, the pollution of optical components is reduced, and the service time is increased.
But aiming at the filter materials with different filtering effect grades, in order to ensure the measuring precision, the concentration of the aerosol can be adjusted to be larger or smaller according to the requirement. Because the dilution ratio of the diluter is fixed, the measurement data volume is small and the precision is poor when the measurement concentration is small; if the concentration is too high, the concentration at the outlet of the diluter may exceed the measurement range of the instrument.
Therefore, the above problems need to be solved.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
For solving the technical problem who exists among the background art, the utility model provides a take filter media check out test set of diluter.
(II) technical scheme
In order to solve the problems, the utility model provides a filter material detection device with diluter, which comprises a plurality of diluters which are serially connected and arranged on a sampling pipeline, and a particle counter/photometer which is serially connected and arranged on the sampling pipeline;
a valve is arranged on the sampling pipeline;
the diluter is a fixed ratio diluter or an adjustable ratio diluter.
Preferably, the sampling pipe is an upstream sampling pipe or a downstream sampling pipe.
Preferably, the adjustable ratio diluter comprises a capillary tube, a filter, a mixing chamber and a gas flow control valve;
the capillary tube and the air inlet end of the filter are connected with a sampling pipeline; gas flow control valves are arranged at the gas inlet ends of the capillary tube and the filter;
the capillary tube is connected with the air outlet end of the filter and the mixing chamber.
The utility model discloses in, increase a plurality of dilutors on the sampling pipeline of upstream or low reaches, through the valve of switching dilutor (fixed dilution ratio) and sampling pipeline, realize getting into the aerosol concentration of measuring device variable to adapt to the correct measurement under the different concentration aerosol condition.
The utility model discloses in, increase a plurality of diluters on the sampling pipe of upstream to adapt to the aerosol of different concentrations, make the aerosol concentration that gets into measuring device keep in the safety range of device. A plurality of diluters are added on a downstream sampling pipeline to adapt to filter materials with different filter effects, so that the concentration of aerosol entering a measuring device is kept within the safety range of the device.
The utility model discloses in, adjustable proportion diluter realizes that the dilution ratio of diluter is adjustable.
Drawings
Fig. 1 is a schematic view of an embodiment of a filter material detection device with a diluter according to the present invention.
Fig. 2 is a schematic view of another embodiment of the filter material detection device with a diluter according to the present invention.
FIG. 3 is a schematic diagram of the adjustable ratio diluter of FIG. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-3, the filter material detecting device with diluter of the present invention includes a plurality of diluters serially connected to the sampling pipe 1, and a particle counter/photometer 4 serially connected to the sampling pipe 1;
a valve is arranged on the sampling pipeline 1;
the diluter is a fixed ratio diluter 2 or an adjustable ratio diluter 3.
In an alternative embodiment, the sampling pipe 1 is an upstream sampling pipe or a downstream sampling pipe.
The utility model discloses in, increase a plurality of dilutors on sampling pipeline 1 of upstream or low reaches, through the valve of switching dilutor (fixed dilution ratio) and sampling pipeline 1, realize getting into the aerosol concentration of measuring device variable to adapt to the correct measurement under the different concentration aerosol condition.
The utility model discloses in, increase a plurality of diluters on the sampling pipe of upstream to adapt to the aerosol of different concentrations, make the aerosol concentration that gets into measuring device keep in the safety range of device. A plurality of diluters are added on the downstream sampling pipeline 1 to adapt to filter materials with different filter effects, so that the concentration of aerosol entering a measuring device is kept within the safety range of the device.
The utility model discloses in, adjustable ratio diluter 3 realizes that the dilution ratio of diluter is adjustable.
In an alternative embodiment, the adjustable proportional diluter 3 comprises a capillary tube 11, a filter 12, a mixing chamber 13 and a gas flow control valve 14;
the capillary tube 11 and the air inlet end of the filter 12 are connected with the sampling pipeline 1; gas flow control valves 14 are arranged at the gas inlet ends of the capillary tube 11 and the filter 12;
the capillary tube 11 is connected with the air outlet end of the filter 12 to the mixing chamber 13.
The gas flow rate control valve 14 is added to adjust the resistance of the corresponding installation line, thereby adjusting the flow rate ratio between the capillary tube 11 and the filter 12, and further changing the dilution ratio of the diluter.
Wherein a diluter having a lower dilution ratio than the original dilution ratio can be obtained by adjusting the gas flow control valve 14 mounted on the filter 12. By adjusting the gas flow control valve 14 installed on the capillary tube 2, a diluter having a higher dilution ratio than the original one can be obtained.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (3)
1. The filter material detection device with the diluter is characterized by comprising a plurality of diluters which are serially arranged on a sampling pipeline (1) and a particle counter/photometer (4) which is serially arranged on the sampling pipeline (1);
a valve is arranged on the sampling pipeline (1);
the diluter is a fixed proportion diluter (2) or an adjustable proportion diluter (3).
2. The filter detection device with a diluter as claimed in claim 1, wherein the sampling pipe (1) is an upstream sampling pipe or a downstream sampling pipe.
3. The filter detecting device with diluter as claimed in claim 1, wherein the adjustable ratio diluter (3) comprises a capillary tube (11), a filter (12), a mixing chamber (13) and a gas flow control valve (14);
the capillary tube (11) and the air inlet end of the filter (12) are connected with the sampling pipeline (1); gas flow control valves (14) are arranged at the gas inlet ends of the capillary tube (11) and the filter (12);
the capillary tube (11) and the air outlet end of the filter (12) are connected with a mixing chamber (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022636058.9U CN214622215U (en) | 2020-11-13 | 2020-11-13 | Filter material detection device with diluter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022636058.9U CN214622215U (en) | 2020-11-13 | 2020-11-13 | Filter material detection device with diluter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214622215U true CN214622215U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022636058.9U Active CN214622215U (en) | 2020-11-13 | 2020-11-13 | Filter material detection device with diluter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214622215U (en) |
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2020
- 2020-11-13 CN CN202022636058.9U patent/CN214622215U/en active Active
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