CN202033243U - Air dilution device and dust particle counting device comprising same - Google Patents
Air dilution device and dust particle counting device comprising same Download PDFInfo
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- CN202033243U CN202033243U CN2011201092727U CN201120109272U CN202033243U CN 202033243 U CN202033243 U CN 202033243U CN 2011201092727 U CN2011201092727 U CN 2011201092727U CN 201120109272 U CN201120109272 U CN 201120109272U CN 202033243 U CN202033243 U CN 202033243U
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Abstract
The utility model relates to an air dilution device and a dust particle counting device comprising the air dilution device. The air dilution device comprises an air inlet part, a mixing part and an air outlet part, which are arranged in sequence in the flowing direction of the air, wherein the air inlet part comprises an air sample inlet through which an air sample is guided in, an air inlet nozzle communicated with the air sample inlet, an air sample port through which the clean air is guided in, and an air chamber communicated with the air sample port; the mixing part comprises a mixing chamber with an air inlet and an air outlet, the air inlet end of the air inlet nozzle extends into the air inlet of the mixing chamber, the air chamber is communicated with the air inlet, and the air inlet is flared such that the diameter of the air inlet is gradually increased from outside to inside; the air outlet part comprises an air outlet channel communicated with the air outlet of the mixing chamber. The air dilution device can ensure good uniformity in dilution ratio of particles with different grain sizes in the air containing high concentration dust particles, has no impact on the flow rate of a sampling device, and prevents the backflow of air.
Description
Technical field
The utility model relates to a kind of be suitable for dust particle device that high concentration dust ion is detected and a kind of being used for the logical air diluter that purifies air and dilute of gas to be detected.
Background technology
Airborne particle counter is used for measuring dust particle size and the number in the clean environment unit volume air, and it is widely used in departments such as electronics, optics, chemistry, food, cosmetics, medical and health, biological products, Aero-Space.Existing airborne particle counter mainly is made up of sampling apparatus and measurement mechanism, wherein, sampling apparatus comprises air pump and filtrator etc., it is used for gathering gaseous sample to be measured and produces sampling flow (sampling flow is generally between 2.83L/min～28.3L/min), and data are analyzed and obtained to measurement mechanism to the sample of sampling apparatus collection.When adopting existing airborne particle counter to carry out the detection of high concentration dust particle, need dilute the high concentration dust particle in advance, and control tested gas sampling flow and the airborne particle counter sampling flow can reach certain dilution ratio.The general little gases at high pressure that use through the atmosphere gas or the process purified treatment of purified treatment of dilution.Yet, dilute when operation actual, be difficult to make that the particle dilution ratio of different-grain diameter obtains reasonable consistance, and dilution can influence the sampling flow of part airborne particle counter, occur the refluence phenomenon easily when using little high pressure clean gas, finally influenced the accuracy of airborne particle counter measurement result.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, a kind of air diluter that high concentration dust ionized gas is diluted that is exclusively used in is provided, its dilution ratio to the particle of different-grain diameter has consistance preferably, and avoids diluting the influence to the airborne particle counter sampling flow.
The utility model also will provide a kind of high concentration dust ion dust particle device simultaneously, and it is suitable for the detection of high concentration dust ion, the accuracy height.
For solving the problems of the technologies described above, a kind of technical scheme that the utility model is taked is:
A kind of air diluter, it is divided into induction part, mixing portion and outlet gas part successively according to the gas flow direction, wherein:
Described induction part comprises the sample gas air intake opening, the admission piece that is communicated with the sample gas air intake opening that are used to feed sample gas, is used to feed the air injection port of pure air, the air chamber that is communicated with the air injection port;
Described mixing portion comprises the hybrid chamber with gas access and gas vent, and the gas access of described hybrid chamber is stretched in the air inlet end of described admission piece, and air chamber is connected with the gas access, and the gas access is diameter from outer to inner and becomes big tubaeform gradually;
Described outlet gas part comprises the outlet passageway that is communicated with the gas vent of hybrid chamber.
According to further embodiment of the present utility model: described outlet gas part also comprises the outlet port that is used to discharge unnecessary gas that is arranged on the outlet passageway top.
According to a concrete aspect of the present utility model, separate by the buffering clamping plate between described hybrid chamber and the air chamber, described gas access is opened on the buffering clamping plate, and particularly the gas access is positioned at the center of buffering clamping plate.
The another technical scheme that the utility model is taked is: a kind of dust particle device, it is except comprising sampling apparatus and measurement mechanism, also comprised above-mentioned air diluter, the outlet side of the outlet passageway of air diluter is communicated with the thief hatch of sampling apparatus.
Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage:
The ratio of the diameter of air intake that the utility model air diluter can be by the control hybrid chamber and the internal diameter of admission piece is regulated dilution ratio, gas flow is unobstructed in the hybrid chamber, gas mixes full and uniform, seldom there is particle in cavity, to deposit, makes that the dilution ratio of different-grain diameter particle has consistance preferably in the high concentration dust particle gas; In addition, the air diluter of this structure forms negative pressure at the admission piece front end, effectively prevents the phenomenon that gas flows backwards by admission piece.
Dust particle device of the present utility model, before the thief hatch of sampling apparatus, set up air diluter of the present utility model, before sampling, gaseous sample to be measured is mixed fully with clean gas and dilute, this air diluter can guarantee that the dilution ratio of different-grain diameter particle in the high concentration dust particle gas has consistance preferably, and can not impact sampling flow, therefore, the utility model airborne particle counter gained measurement result is more accurate.
Description of drawings
The utility model is described in more detail below in conjunction with specific embodiment.
Fig. 1 is the structural representation according to air diluter of the present utility model;
Wherein: 1, induction part; 2, mixing portion; 3, outlet gas part; 4, buffering clamping plate; 10, sample gas air intake opening; 11, admission piece; 110, air inlet end; 12, air injection port; 13, air chamber; 20, hybrid chamber; 200, gas access; 201, gas vent; 30, outlet passageway; 31, outlet port.
Embodiment
The dust particle device generally comprises sampling apparatus and measurement mechanism, and these are prior art.The improvement that the utility model is done is, increases an air diluter that can dilute sample gas at the front end of the thief hatch of sampling apparatus.
As shown in Figure 1, the air diluter mainly is made of induction part 1, mixing portion 2 and outlet gas part 3, wherein:
Induction part 1 comprises the sample gas air intake opening 10, the admission piece 11 that is communicated with sample gas air intake opening 10 that are used to feed sample gas, is used to feed the air injection port 12 of pure air, the air chamber 13 that is communicated with air injection port 12, and described sample gas is dust particle gas to be detected; Pure air can be the little gases at high pressure through the atmosphere gas of purified treatment or process purified treatment.
Mixing portion 2 comprises the hybrid chamber 20 with gas access 200 and gas vent 201.Separate by buffering clamping plate 4 between hybrid chamber 20 and the air chamber 13, gas access 200 promptly is positioned at the center of buffering clamping plate 4, and buffering clamping plate 4 are tubaeform, makes gas access 200 be diameter from outer to inner and becomes big tubaeform gradually.The gas access 201 of described hybrid chamber 20 is stretched in the air inlet end 110 of admission piece 11, thereby directly sample gas is passed in the hybrid chamber 20, air chamber 13 is connected with gas access 200, the pure air that feeds from air injection port 12 is through air chamber 13,200 enter into hybrid chamber 20 from the gas access, the ratio that changes the internal diameter of the diameter of gas access 200 and admission piece 11 can regulate to sample gas dilution ratio.
Outlet gas part 3 comprises the outlet passageway 30 that is communicated with the gas vent 201 of hybrid chamber 20 and is positioned at the outlet port 31 that outlet passageway 30 tops are used to discharge unnecessary gas.The outlet end of outlet passageway 30 is communicated with the thief hatch of the sampling apparatus of dust particle device.
Compared with prior art, the utility model can keep consistance preferably to the dilution ratio of different-grain diameter particle in the high concentration dust particle gas, can the sampling flow of sampling apparatus not impacted, prevented gas refluence phenomenon, the accuracy of dust particle device that includes the utility model air diluter is also just higher.
More than the utility model has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to spirit of the present utility model change or modify, and all should be encompassed in the protection domain of the present utility model
Claims (8)
1. air diluter, it is characterized in that: described air diluter is divided into induction part (1), mixing portion (2) and outlet gas part (3) successively according to the gas flow direction, wherein:
Described induction part (1) comprises the sample gas air intake opening (10), the admission piece (11) that is communicated with described sample gas air intake opening (10) that are used to feed sample gas, is used to feed the air injection port (12) of pure air, the air chamber (13) that is communicated with described air injection port (12);
Described mixing portion (2) comprises the hybrid chamber (20) of have the gas access (200) and gas vent (201), the gas access (200) of described hybrid chamber (20) is stretched in the air inlet end (110) of described admission piece (11), described air chamber (13) is connected with described gas access (200), and described gas access (200) are diameter from outer to inner and become big tubaeform gradually;
Described outlet gas part (3) comprises the outlet passageway (30) that is communicated with the gas vent (201) of described hybrid chamber (20).
2. air diluter according to claim 1 is characterized in that: described outlet gas part (3) also comprises the outlet port that is used to discharge unnecessary gas (31) that is arranged on described outlet passageway (30) top.
3. air diluter according to claim 1 is characterized in that: separate by buffering clamping plate (4) between described hybrid chamber (20) and the described air chamber (13), described gas access () is opened on the described buffering clamping plate (4).
4. air diluter according to claim 3 is characterized in that: described gas access () is positioned at the center of described buffering clamping plate (4).
5. dust particle device, comprise sampling apparatus and measurement mechanism, it is characterized in that: described dust particle device also comprises the air diluter that testing sample gas is diluted, described air diluter is divided into induction part (1) successively according to the gas flow direction, mixing portion (2) and outlet gas part (3), wherein: described induction part (1) comprises the sample gas air intake opening (10) that is used to feed sample gas, the admission piece (11) that is communicated with described sample gas air intake opening (10), be used to feed the air injection port (12) of pure air, the air chamber (13) that is communicated with described air injection port (12); Described mixing portion (2) comprises the hybrid chamber (20) of have the gas access (200) and gas vent (201), the gas access (200) of described hybrid chamber (20) is stretched in the air inlet end (110) of described admission piece (11), described air chamber (13) is connected with described gas access (200), and described gas access (200) are diameter from outer to inner and become big tubaeform gradually; Described outlet gas part (3) comprises the outlet passageway (30) that is communicated with the gas vent (201) of described hybrid chamber (20), and described outlet passageway (30) is connected with the thief hatch of described sampling apparatus.
6. dust particle device according to claim 5 is characterized in that: described outlet gas part (3) also comprises the outlet port that is used to discharge unnecessary gas (31) that is arranged on described outlet passageway (30) top.
7. dust particle device according to claim 5 is characterized in that: separate by buffering clamping plate (4) between described hybrid chamber (20) and the described air chamber (13), described gas access (200) are opened on the described buffering clamping plate (4).
8. dust particle device according to claim 7 is characterized in that: described gas access (200) are positioned at the center of described buffering clamping plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201092727U CN202033243U (en) | 2011-04-14 | 2011-04-14 | Air dilution device and dust particle counting device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201092727U CN202033243U (en) | 2011-04-14 | 2011-04-14 | Air dilution device and dust particle counting device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033243U true CN202033243U (en) | 2011-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201092727U Expired - Lifetime CN202033243U (en) | 2011-04-14 | 2011-04-14 | Air dilution device and dust particle counting device comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252893A (en) * | 2011-04-14 | 2011-11-23 | 苏州苏净仪器自控设备有限公司 | Air diluter and dust particle counting device containing the same |
-
2011
- 2011-04-14 CN CN2011201092727U patent/CN202033243U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252893A (en) * | 2011-04-14 | 2011-11-23 | 苏州苏净仪器自控设备有限公司 | Air diluter and dust particle counting device containing the same |
| CN102252893B (en) * | 2011-04-14 | 2012-11-07 | 苏州苏净仪器自控设备有限公司 | Air diluter and dust particle counting device containing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111109 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |