CN215004545U - Impact type particulate cutter - Google Patents
Impact type particulate cutter Download PDFInfo
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- CN215004545U CN215004545U CN202120699925.5U CN202120699925U CN215004545U CN 215004545 U CN215004545 U CN 215004545U CN 202120699925 U CN202120699925 U CN 202120699925U CN 215004545 U CN215004545 U CN 215004545U
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Abstract
The utility model provides an impact type particle cutter, which comprises an upper nozzle unit, a lower supporting unit and a filter membrane clamping unit, wherein the upper nozzle unit and the lower supporting unit are detachably connected through a shell to form a hollow cavity structure, the upper nozzle unit is provided with a plurality of air inlets and nozzles which are circularly arranged, the air inlets and the nozzles are connected and form air inlet channels in a one-to-one correspondence manner, the lower supporting unit comprises a baffle plate and an air pipe, the baffle plate is positioned on the upper surface of the lower supporting unit and positioned at the bottom of the cavity structure, the air pipe is positioned at the central part of the lower supporting unit and passes through the lower supporting unit, the upper end of the air pipe is positioned in the cavity structure, the filter membrane clamping unit is detachably arranged below the lower supporting unit, a filter membrane is arranged between the lower supporting unit and the filter membrane clamping unit, the structure is simple, can be suitable for collecting various particles.
Description
Technical Field
The utility model relates to a particulate matter field of gathering especially relates to an impact type particulate matter cutterbar.
Background
With the development of industry, the degree of particulate pollutants in the atmosphere is continuously increased, people pay more and more attention to the quality of air, especially to the degree of attention to PM2.5 and PM10, because the two types of particulate matters have longer residence time in the environment, and more adsorbed heavy metals and toxic and harmful substances can directly enter respiratory tracts and even enter human lungs, and diseases in the aspects of bronchitis, asthma, cardiovascular diseases and the like are caused. In order to find a source of pollution, improve air quality, and avoid causing physical discomfort or lesions, it is necessary to measure the concentration of these two types of particulate matter in the living environment. The small particulate matters (PM10) with the particle size smaller than 10um can enter human bodies more easily and are more harmful to the human bodies, and the small particulate matters are more difficult to collect, so the development of the small particulate matter collecting and separating device is very urgent. The existing PM2.5 and PM10 cutters mostly adopt EPA American standard, the structure is complex, the cutters adopt a multi-stage structure, the size is large, and the disassembly, assembly and maintenance are complex.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects of the prior art, the present invention provides an impact type particulate matter cutter, which comprises an upper nozzle unit 3, a lower supporting unit 7 and a filter membrane clamping unit 9, wherein the upper nozzle unit 3 and the lower supporting unit 7 are detachably connected through a housing 15 to form a hollow cavity structure 16;
the upper nozzle unit 3 is provided with an air inlet and a nozzle 5, the air inlet and the nozzle 5 are arranged in a circular shape, the air inlet and the nozzle 5 are connected and correspond to each other one by one to form an air inlet channel, the upper nozzle unit 3 is provided with an air inlet baffle 2 and is positioned above the air inlet, a circle of insect-proof net 11 is arranged between the air inlet baffle 2 and the upper nozzle unit 3, air flow enters the air inlet from the insect-proof net 11, the nozzle 5 is positioned in a cavity structure 16,
the lower supporting unit 7 comprises a baffle plate 13 and a vent pipe 12, the baffle plate 13 is positioned on the upper surface of the lower supporting unit 7 and is positioned at the bottom of the cavity structure 16, the vent pipe 12 is positioned at the central part of the lower supporting unit 7 and penetrates through the lower supporting unit 7, and the upper end of the vent pipe is positioned in the cavity structure 16;
a filter membrane clamping unit 9 is detachably arranged below the lower supporting unit 7, a filter membrane 17 is arranged between the lower supporting unit 7 and the filter membrane clamping unit 9, and the lower end of the vent pipe 12 is connected to the filter membrane clamping unit 9;
the air pump is communicated with the vent pipe 12 through the connecting filter membrane clamping unit 9 to pump air.
To prevent rain water from entering, the lower support unit 7 preferably further comprises a rain water collecting gutter 14, the rain water collecting gutter 14 being an annular groove arranged around the vent pipe 12.
Preferably, a water outlet is arranged at the bottom of the rainwater collecting tank 14, and a plug 15 is arranged outside the water outlet.
Preferably, the air inlets and the nozzles 5 are uniformly distributed in a circumferential shape.
Preferably, a rain cover 1 is arranged above the air inlet baffle 2, and the rain cover 1 is fixed on the upper nozzle unit 3 through a rain cover supporting tube 10.
Preferably, a first sealing O-ring 4 is arranged between the upper nozzle unit 3 and the housing 15, a second sealing O-ring 6 is arranged between the housing 15 and the lower support unit 7, and a third sealing O-ring 8 is arranged between the lower support unit 7 and the membrane clamping unit 9.
The utility model has the advantages that:
the device is simple in structure and mainly divided into four parts, each part is detachably connected, and the filter membrane can be directly collected to perform subsequent sample detection. When maintenance is needed, all parts can be easily disassembled and separated, and internal parts can be cleaned. In addition, the caliber and the number of the nozzles can be changed by replacing the equipment, and the device can be suitable for different particulate matter sampling equipment, such as a PM2.5 cutter and a PM10 cutter.
Drawings
Fig. 1 is a cross-sectional structural view of the present invention.
Fig. 2 is a cross-sectional view of the middle portion of the present invention.
Fig. 3 is a three-dimensional structure diagram of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
As shown in fig. 1-2, the present invention comprises: an impact type particle cutter comprises an upper nozzle unit 3, a lower supporting unit 7 and a filter membrane clamping unit 9, wherein the upper nozzle unit 3 and the lower supporting unit 7 are detachably connected through a shell 15 to form a hollow cavity structure 16;
the upper nozzle unit 3 is provided with an air inlet and a nozzle 5, the air inlet and the nozzle 5 are arranged in a circular shape, the air inlet and the nozzle 5 are connected and correspond to each other one by one to form an air inlet channel, the upper nozzle unit 3 is provided with an air inlet baffle 2 and is positioned above the air inlet, a circle of insect-proof net 11 is arranged between the air inlet baffle 2 and the upper nozzle unit 3, air flow enters the air inlet from the insect-proof net 11, the nozzle 5 is positioned in a cavity structure 16,
the lower supporting unit 7 comprises a baffle plate 13 and a vent pipe 12, the baffle plate 13 is positioned on the upper surface of the lower supporting unit 7 and is positioned at the bottom of the cavity structure 16, the vent pipe 12 is positioned at the central part of the lower supporting unit 7 and penetrates through the lower supporting unit 7, and the upper end of the vent pipe is positioned in the cavity structure 16;
a filter membrane clamping unit 9 is detachably arranged below the lower supporting unit 7, a filter membrane 17 is arranged between the lower supporting unit 7 and the filter membrane clamping unit 9, and the lower end of the vent pipe 12 is connected to the filter membrane clamping unit 9;
the air pump is communicated with the vent pipe 12 through the connecting filter membrane clamping unit 9 to pump air.
To prevent rain water from entering, it is preferred in this embodiment that the lower support unit 7 further comprises a rain water collecting gutter 14, the rain water collecting gutter 14 being an annular groove provided around the vent pipe 12.
In this embodiment, a drain opening is preferably provided at the bottom of the rainwater collection tank 14, and a plug 15 is provided outside the drain opening.
In this embodiment, the air inlets and the nozzles 5 are preferably uniformly distributed in a circumferential manner.
In this embodiment, preferably, a rain cover 1 is disposed above the air inlet baffle 2, and the rain cover 1 is fixed on the upper nozzle unit 3 through a rain cover support pipe 10.
In this embodiment, it is preferable that a first sealing O-ring 4 is provided between the upper nozzle unit 3 and the housing 15, a second sealing O-ring 6 is provided between the housing 15 and the lower support unit 7, and a third sealing O-ring 8 is provided between the lower support unit 7 and the filter membrane clamping unit 9.
The working principle is as follows: based on the principle of impingement, it mainly comprises three main parts, an upper nozzle unit 3, a housing 15 and a lower support unit 7. The rain cover 1 is fixed to the rain cover support pipe 10. Air is pumped by an air pump at the bottom of the vent pipe 12, ambient air enters through the insect-proof net 11 below the air inlet baffle 2 and is sprayed out after being evenly distributed by the plurality of nozzles 5 of 360 degrees, larger particles are captured by the baffle plate 13 due to the inertia effect, and smaller particles reach the filter membrane 17 through the vent pipe 12 due to the influence of air flow disturbance and are collected. Simultaneously for preventing the influence that gets into the rainwater, this particulate matter single-stage sampling device is furnished with rainwater collecting vat 14, regularly need loosen drainage end cap 15 and carry out the drainage.
The operating principle of the impact type particulate matter cutter is that ambient air containing PM2.5 or PM10 particulate matters flows through the air inlet at the flow rate of 2.3m3/h, after the particulate matters are ejected through the plurality of nozzles, the air flow turns, and all the particulate matters in the air flow keep linear motion in the original direction due to the inertia effect. The larger the particle diameter is, the larger the momentum thereof is, and therefore the larger the inertia is, the longer the forward stroke distance is, the particles with a particle size large to a certain degree will always impact on the baffle plate and be captured by the baffle plate, and the smaller particles can reach the sampling filter paper along with the air flow, be collected and be subsequently analyzed as a detection sample. The number and the jet caliber of the jet nozzles and the distance between the jet nozzles and the baffle plate need to be designed according to the aerodynamic principle and by combining the actual sampling flow and the collected object.
The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.
Claims (6)
1. An impact type particle cutter is characterized by comprising an upper nozzle unit (3), a lower supporting unit (7) and a filter membrane clamping unit (9), wherein the upper nozzle unit (3) and the lower supporting unit (7) are detachably connected through a shell (15) to form a hollow cavity structure (16);
the air inlet and the nozzle (5) are arranged on the upper nozzle unit (3), a plurality of air inlets and a plurality of nozzles (5) are circularly arranged, the air inlets are connected with the nozzles (5) and form air inlet channels in a one-to-one correspondence manner, an air inlet baffle (2) is arranged on the upper nozzle unit (3) and is positioned above the air inlets, a circle of insect-proof net (11) is arranged between the air inlet baffle (2) and the upper nozzle unit (3), air flow enters the air inlets from the insect-proof net (11), and the nozzles (5) are positioned in the cavity structure (16);
the lower supporting unit (7) comprises a baffle plate (13) and a vent pipe (12), the baffle plate (13) is positioned on the upper surface of the lower supporting unit (7) and is positioned at the bottom of the cavity structure (16), the vent pipe (12) is positioned in the central part of the lower supporting unit (7) and penetrates through the lower supporting unit (7), and the upper end of the vent pipe is positioned in the cavity structure (16);
a filter membrane clamping unit (9) is detachably arranged below the lower supporting unit (7), a filter membrane (17) is arranged between the lower supporting unit (7) and the filter membrane clamping unit (9), and the lower end of the vent pipe (12) is connected to the filter membrane clamping unit (9);
the air pump is communicated with the vent pipe (12) through the connecting filter membrane clamping unit (9) to pump air.
2. The impact pellet cutter of claim 1, wherein: the lower support unit (7) further comprises a rainwater collection trough (14), the rainwater collection trough (14) being an annular groove arranged around the vent pipe (12).
3. The impact pellet cutter of claim 2, wherein: a water outlet is formed in the bottom of the rainwater collecting tank (14), and a plug (15) is arranged outside the water outlet.
4. The impact pellet cutter of claim 3, wherein: the air inlets and the nozzles (5) are uniformly distributed in a circumferential shape.
5. The impact pellet cutter of claim 4, wherein: rain cover (1) is arranged above air inlet baffle (2), and rain cover (1) is fixed on upper nozzle unit (3) through rain cover supporting tube (10).
6. The impact pellet cutter of claim 5, wherein: a first sealing O-shaped ring (4) is arranged between the upper nozzle unit (3) and the shell (15), a second sealing O-shaped ring (6) is arranged between the shell (15) and the lower supporting unit (7), and a third sealing O-shaped ring (8) is arranged between the lower supporting unit (7) and the filter membrane clamping unit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120699925.5U CN215004545U (en) | 2021-04-07 | 2021-04-07 | Impact type particulate cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120699925.5U CN215004545U (en) | 2021-04-07 | 2021-04-07 | Impact type particulate cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215004545U true CN215004545U (en) | 2021-12-03 |
Family
ID=79096362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120699925.5U Active CN215004545U (en) | 2021-04-07 | 2021-04-07 | Impact type particulate cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215004545U (en) |
-
2021
- 2021-04-07 CN CN202120699925.5U patent/CN215004545U/en active Active
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