CN210022837U - Centrifugal air particulate matter grade screening device based on particle size - Google Patents
Centrifugal air particulate matter grade screening device based on particle size Download PDFInfo
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- CN210022837U CN210022837U CN201822126624.4U CN201822126624U CN210022837U CN 210022837 U CN210022837 U CN 210022837U CN 201822126624 U CN201822126624 U CN 201822126624U CN 210022837 U CN210022837 U CN 210022837U
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- rotating shaft
- cover plate
- centrifugal
- annular collecting
- upper cover
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Abstract
A centrifugal air particulate matter grade screening device based on particle size comprises an upper rotating shaft, a lower rotating shaft, an upper cover plate and a lower cover plate, wherein hollow holes are formed in the upper rotating shaft and the lower rotating shaft respectively, the hollow holes in the lower rotating shaft are air inlet holes, the hollow holes in the upper rotating shaft are air outlet holes, the upper rotating shaft is rotatably arranged in the middle of the upper cover plate through a bearing, the lower rotating shaft is rotatably arranged in the middle of the lower cover plate through a bearing, the upper rotating shaft and the lower rotating shaft are fixedly connected through a plurality of centrifugal blades, and the centrifugal blades are uniformly distributed at equal intervals in the circumferential direction; the lower cover plate is provided with a plurality of annular collecting grooves in the radial direction on one surface opposite to the upper cover plate, the inner diameter of the annular collecting groove with the minimum inner diameter is larger than the outer diameter of the centrifugal blade, a tubular particle sieve plate is fixedly arranged on each annular collecting groove between the lower cover plate and the upper cover plate, and the aperture of each particle sieve plate is sequentially increased from outside to inside. The utility model discloses can carry out the grade division of different particle diameters to the particulate matter fast.
Description
Technical Field
The utility model relates to a centrifugal air particulate matter grade sieving mechanism based on particle diameter.
Background
Haze, which is a combination word of fog and haze. Haze is common in cities. In China, the fog is merged into the haze to be used as a disaster weather phenomenon for early warning and forecasting, and the phenomenon is called as haze weather. Haze is the result of specific climatic conditions interacting with human activity. Economic and social activities of high-density population inevitably discharge a large amount of fine particulate matters (PM 2.5), once the discharge exceeds the atmospheric circulation capacity and the bearing capacity, the concentration of the fine particulate matters is continuously accumulated, and at the moment, if the influence of calm weather and the like is caused, the haze in a large range is extremely easy to appear. In recent years, haze weather is continuously aggravated due to the reasons of accelerated industrialization process, poor environmental protection and the like in China, and main pollutants of haze are fine particulate matters such as PM2.5 and the like. And how to accurately know the mass concentration, the number concentration and the specific gravity of the particulate matters with the particle sizes in the air is necessary for analyzing and treating haze pollution.
The existing method for measuring the mass concentration of particulate matters is a filter membrane weighing method, which is a basic method for measuring the mass concentration of the particulate matters, samples at a specified flow rate, traps the particulate matters in the air on a high-performance filter membrane, weighs the mass of the filter membrane before and after sampling, and obtains the mass of trapped dust according to the mass difference, wherein the mass ratio of the trapped dust to the mass of sampled air is very the mass concentration of dust.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's shortcoming with not enough, provide a centrifugal air particulate matter grade sieving mechanism based on particle diameter, through combining the sieve of different specifications, can be quick accurate carry out the grade division of different particle diameters to the particulate matter in dusty gases such as air to can collect the corresponding collecting vat in, the analytical study after being convenient for.
In order to achieve the above object, the utility model adopts the following technical scheme:
a centrifugal air particulate matter grade screening device based on particle size comprises an upper rotating shaft, a lower rotating shaft, an upper cover plate and a lower cover plate, wherein hollow holes are formed in the upper rotating shaft and the lower rotating shaft respectively, the hollow holes in the lower rotating shaft are air inlet holes, the hollow holes in the upper rotating shaft are air outlet holes, the upper rotating shaft is rotatably arranged in the middle of the upper cover plate through a bearing, the lower rotating shaft is rotatably arranged in the middle of the lower cover plate through a bearing, the upper rotating shaft and the lower rotating shaft are fixedly connected through a plurality of centrifugal blades, and the centrifugal blades are uniformly distributed at equal intervals in the circumferential direction; the apron is equipped with a plurality of annular collecting vat on the one side relative to the upper cover plate in radial direction down, the internal diameter of the annular collecting vat that the internal diameter is minimum is big than centrifugal blade's external diameter, all be fixed on every annular collecting vat between apron and the upper cover plate down and be equipped with pipy granule sieve, the aperture that is located the granule sieve on a plurality of annular collecting vat respectively increases by outer to interior in proper order.
From the above, the utility model discloses the theory of operation as follows: use clean air earlier to clear up the device, guarantee that there is not the dirt particle inside, later with the output shaft transmission of last axis of rotation or lower axis of rotation and motor be connected, then let in a quantitative dirty gas that awaits measuring from the air inlet, let in clean air from the air inlet again and supply the air supply for centrifugal fan, the dirty gas mesoparticle that awaits measuring is centrifugal motion and follows the departure of centrifugal blade clearance under centrifugal blade wind-force drives, behind the granule sieve is touch to the granule sieve of departure, be screened by a plurality of granule sieve in different apertures, fall into on different annular collecting vatches after the granule sieve screening of different particle diameters, alright weigh or count the particulate matter in each annular collecting vat after operation a period.
To sum up, the utility model discloses a combine the sieve of different specifications, can be quick accurate carry out the grade division of different particle diameters to particulate matter in dusty gases such as air to can collect in the corresponding collecting vat, the later analytical research of being convenient for.
As an improvement of the utility model, annular collecting vat quantity is 5, and 5 annular collecting vats distribute along radial direction in proper order by outer to interior, correspondingly, pipy granule sieve quantity is 5, and the aperture specification of 5 granule sieves is 0.1 ~ 0.3 mu m, 0.3 ~ 1 mu m, 1 ~ 2.5 mu m, 2.5 ~ 10 mu m and is greater than 10 mu m by outer to interior in proper order.
As an improvement of the utility model, the upper cover plate is the circular slab with lower apron, the center department of upper cover plate and lower apron is equipped with the centre bore, and the last axis of rotation passes through the bearing and rotationally establishes the centre bore department at the upper cover plate, and the centre bore department at lower apron is rotationally established through the bearing to the lower axis of rotation.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model discloses a combine the sieve of different specifications, can be quick accurate carry out the grade division of different particle diameters to particulate matter in dusty gases such as air to can collect the collecting vat that corresponds, the analytical study after being convenient for.
Drawings
FIG. 1 is a perspective view of a centrifugal air particulate grade screening device based on particle size according to the present invention;
fig. 2 is an exploded view of fig. 1.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.
Examples
Referring to fig. 1 and 2, a centrifugal air particulate grade screening device based on particle size includes an upper rotating shaft 20, a lower rotating shaft 10, an upper cover plate 40 and a lower cover plate 30;
the upper rotating shaft 20 and the lower rotating shaft 10 are respectively provided with a hollow hole 50, the hollow hole of the lower rotating shaft 10 is an air inlet, the hollow hole of the upper rotating shaft 20 is an air outlet, the upper rotating shaft 20 is rotatably arranged in the middle of the upper cover plate 40 through a bearing, the lower rotating shaft 10 is rotatably arranged in the middle of the lower cover plate 30 through a bearing, the upper rotating shaft 20 and the lower rotating shaft 10 are fixedly connected through a plurality of centrifugal blades 60, and the centrifugal blades 60 are uniformly distributed at equal intervals along a circumferential direction;
the lower cover plate 30 is provided with a plurality of annular collecting grooves 31 on the surface opposite to the upper cover plate 40 in the radial direction, the inner diameter of the annular collecting groove 31 with the smallest inner diameter is larger than the outer diameter of the centrifugal blade 60, tubular particle sieve plates 70 are fixedly arranged on each annular collecting groove 31 between the lower cover plate 30 and the upper cover plate 40, and the aperture of the particle sieve plates 70 respectively positioned on the plurality of annular collecting grooves is sequentially increased from outside to inside.
From the above, the utility model discloses the theory of operation as follows: use clean air earlier to clear up the device, guarantee that there is not the dirt particle inside, later with the output shaft transmission of last axis of rotation or lower axis of rotation and motor be connected, then let in a quantitative dirty gas that awaits measuring from the air inlet, let in clean air from the air inlet again and supply the air supply for centrifugal fan, the dirty gas mesoparticle that awaits measuring is centrifugal motion and follows the departure of centrifugal blade clearance under centrifugal blade wind-force drives, behind the granule sieve is touch to the granule sieve of departure, be screened by a plurality of granule sieve in different apertures, fall into on different annular collecting vatches after the granule sieve screening of different particle diameters, alright weigh or count the particulate matter in each annular collecting vat after operation a period.
To sum up, the utility model discloses a combine the sieve of different specifications, can be quick accurate carry out the grade division of different particle diameters to particulate matter in dusty gases such as air to can collect in the corresponding collecting vat, the later analytical research of being convenient for.
In this embodiment, the number of the annular collecting grooves 31 is 5, the 5 annular collecting grooves 31 are sequentially distributed along the radial direction from outside to inside, correspondingly, the number of the tubular particle sieve plates 70 is 5, and the pore size of the 5 particle sieve plates 70 is sequentially 0.1 to 0.3 μm, 0.3 to 1 μm, 1 to 2.5 μm, 2.5 to 10 μm and greater than 10 μm from outside to inside.
In this embodiment, the upper and lower cover plates 40 and 30 are circular plates, a center hole 80 is formed at the center of the upper and lower cover plates 40 and 30, the upper rotating shaft 20 is rotatably provided at the center hole of the upper cover plate 40 by a bearing, and the lower rotating shaft 10 is rotatably provided at the center hole of the lower cover plate 30 by a bearing.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (3)
1. The utility model provides a centrifugal air particulate matter grade sieving mechanism based on particle diameter which characterized in that: the centrifugal fan comprises an upper rotating shaft, a lower rotating shaft, an upper cover plate and a lower cover plate, wherein hollow holes are respectively formed in the upper rotating shaft and the lower rotating shaft, the hollow hole of the lower rotating shaft is an air inlet, the hollow hole of the upper rotating shaft is an air outlet, the upper rotating shaft is rotatably arranged in the middle of the upper cover plate through a bearing, the lower rotating shaft is rotatably arranged in the middle of the lower cover plate through a bearing, the upper rotating shaft and the lower rotating shaft are fixedly connected through a plurality of centrifugal blades, and the centrifugal blades are uniformly distributed at equal intervals along a circumferential direction; the lower cover plate is provided with a plurality of annular collecting grooves in the radial direction on one surface opposite to the upper cover plate, the inner diameter is minimum the inner diameter of each annular collecting groove is larger than the outer diameter of each centrifugal blade, tubular particle sieve plates are fixedly arranged on each annular collecting groove between the lower cover plate and the upper cover plate, and the pore diameters of the particle sieve plates respectively positioned on the plurality of annular collecting grooves are sequentially increased from outside to inside.
2. A centrifugal particle size-based air particulate grade screen apparatus according to claim 1, wherein: the number of the annular collecting grooves is 5, the 5 annular collecting grooves are distributed along the radial direction from outside to inside in sequence, correspondingly, the number of the tubular particle sieve plates is 5, and the aperture specifications of the 5 particle sieve plates are 0.1-0.3 mu m, 0.3-1 mu m, 1-2.5 mu m, 2.5-10 mu m and larger than 10 mu m from outside to inside in sequence.
3. A centrifugal particle size-based air particulate grade screen apparatus according to claim 1, wherein: the upper cover plate and the lower cover plate are circular plates, center holes are formed in the centers of the upper cover plate and the lower cover plate, the upper rotating shaft is rotatably arranged at the center hole of the upper cover plate through a bearing, and the lower rotating shaft is rotatably arranged at the center hole of the lower cover plate through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822126624.4U CN210022837U (en) | 2018-12-18 | 2018-12-18 | Centrifugal air particulate matter grade screening device based on particle size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822126624.4U CN210022837U (en) | 2018-12-18 | 2018-12-18 | Centrifugal air particulate matter grade screening device based on particle size |
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| Publication Number | Publication Date |
|---|---|
| CN210022837U true CN210022837U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822126624.4U Expired - Fee Related CN210022837U (en) | 2018-12-18 | 2018-12-18 | Centrifugal air particulate matter grade screening device based on particle size |
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| CN (1) | CN210022837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112560A (en) * | 2021-12-14 | 2022-03-01 | 海南昊霖环保科技有限公司 | Hierarchical sampling method and device for air monitoring |
-
2018
- 2018-12-18 CN CN201822126624.4U patent/CN210022837U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112560A (en) * | 2021-12-14 | 2022-03-01 | 海南昊霖环保科技有限公司 | Hierarchical sampling method and device for air monitoring |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20211218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |