CN202869866U - Cutter for multilevel atmospheric particulates - Google Patents

Abstract

The utility model discloses a cutter for multilevel atmospheric particulates. The cutter comprises a primary nozzle, a primary impacting chamber, a secondary nozzle, a secondary impacting chamber and an escape pipe, which are hermetically connected in series in sequence, wherein the primary nozzle is tightly inserted into an air inlet of the primary impacting chamber; at least one breather pipe, extending upwards, is arranged at the bottom of the primary impacting chamber; an air inlet of the breather pipe is communicated with an air outlet of the primary impacting chamber; the air outlet of the primary impacting chamber is connected with an air inlet of the secondary nozzle; an air outlet of the secondary nozzle is connected with the air inlet of the secondary impacting chamber; a filter membrane is arranged on the air outlet of the secondary nozzle; an air port communicated with the air outlet of the secondary impacting chamber is arranged above the secondary impacting chamber; and the air outlet of the secondary impacting chamber is connected with the escape pipe. The cutter for multilevel atmospheric particulates is simple in structure, low in manufacturing process requirement, has no special processing and device requirements, is easy to popularize and use and convenient to maintain, and has good economic benefit and social benefit.

Description

Multistage Atmospheric particulates cutter

Technical field

The utility model relates to a kind of environment supervision instrument, relates in particular to a kind of multistage Atmospheric particulates cutter for air automatic monitoring instrument or sampling thief.

Background technology

Swift and violent increase along with socioeconomic fast development and vehicle guaranteeding organic quantity, marked change has occured in the feature of China's environmental air pollution, regional atmosphere polluting problem is on the rise, developed regions atmosphere PM2.5 pollutes and is on the rise, become the following trend of polluting development, not only cause visibility to reduce, also cause resident's circulation system and respiratory system M ﹠ M to rise, health is produced harm.For improving ambient air quality, protection health and ecologic environment, adapt to the needs of new period air quality management, Chinese Ministry of Environmental Protection has revised " ambient air quality " (GB3095-2012), lists PM2.5 in Air pollutant fundamental surveillance project.

External Andersen Corp., BGI company and URG company etc., begin development and the PM2.5 sampling thief that puts into production from the nineties in last century, but the deficiency of these PM2.5 sampling thiefs is that body volume is large, complex structure, technological requirement are high, expensive, operation and transportation inconvenience, easy care difficulty are large, be difficult to promote.And at present, the sampling thief that domestic production is used mostly is the sampling thief of measuring total air suspended particulates (TSP) or PM10, and the PM2.5 sampling thief is not widely used.

The utility model content

The purpose of this utility model is as overcoming the defective of prior art, and provides a kind of simple in structure, and manufacture craft requires low multistage Atmospheric particulates cutter.For achieving the above object, the utility model is by the following technical solutions:

A kind of multistage Atmospheric particulates cutter comprises successively a primary nozzle, a primary, impact chamber of sealing serial connection, level nozzle, level impulse chamber and an escape pipe; Described primary nozzle is closely inserted the air intake opening of described primary, impact chamber, and the bottom of described primary, impact chamber is provided with at least one upwardly extending snorkel, and the air intake opening of this snorkel is communicated with the gas outlet of primary, impact chamber; The gas outlet of described primary, impact chamber is connected with the air intake opening of secondary nozzle; The gas outlet of described secondary nozzle is connected with the air intake opening of secondary impulse chamber, and the place, gas outlet of this secondary nozzle is provided with a filter membrane; The top of described secondary impulse chamber is provided with the blow vent that is communicated with secondary impulse chamber gas outlet; The gas outlet of described secondary impulse chamber is connected with escape pipe.

Furtherly, described secondary impulse chamber comprise at the bottom of one barrel to around the staving and the circumferential butt that extend, described circumferential butt lid is located at the opening of staving, the extension at the described bucket end is provided with at least one pore.

Furtherly, described primary, impact chamber comprises top, primary, impact chamber, bottom, primary, impact chamber and the interface of giving vent to anger that is threaded connection successively.

Specifically, the distance of the gas outlet of described primary nozzle and primary, impact chamber bottom is 15 millimeters; The distance of the gas outlet of described secondary nozzle and secondary impulse chamber bottom is 13.2 millimeters.

Furtherly, the bottom of described primary, impact chamber is provided with a dry hole that is connected with outside drying bottle by joint.

Furtherly, the top of described primary, impact chamber and a bottom are the bottom riveted joint of obconic cylindrical drum, and the top cover of described cylindrical drum is provided with a top cover.

Furtherly, described top cover comprises upper outer cover, cylindrical fly net and the lower outer cover that sequentially is fixedly connected with from the top down by screw.

Specifically, the surfaceness of described primary nozzle is 1.6 microns.

Specifically, described filter membrane is the glass fiber filter that is coated with silicone oil.

Specifically, described staving closely is connected by the O RunddichtringO with circumferential butt.

Compared with prior art, the beneficial effects of the utility model are: of the present utility model simple in structure, manufacture craft requires lower, material therefor is aluminium alloy, without special processing and matching requirements, is easy to apply, easy to maintenance, good economic benefit and social benefit are arranged.

Description of drawings

Fig. 1 is the structural representation of the utility model preferred embodiment;

Fig. 2 is the primary nozzle diagrammatic cross-section of the utility model preferred embodiment;

Fig. 3 is bottom, the primary, impact chamber diagrammatic cross-section of the utility model preferred embodiment;

Fig. 4 is the primary, impact chamber lower cross section schematic diagram of the utility model preferred embodiment;

Fig. 5 is the secondary nozzle diagrammatic cross-section of the utility model preferred embodiment;

Fig. 6 is the circumferential butt diagrammatic cross-section of the utility model preferred embodiment;

Fig. 7 is the circumferential butt cross sectional representation of the utility model preferred embodiment;

Fig. 8 is the staving diagrammatic cross-section of the utility model preferred embodiment;

Fig. 9 is the staving cross sectional representation of the utility model preferred embodiment;

Figure 10 is the cutting curve of the primary separation of the utility model preferred embodiment;

Figure 11 is the cutting curve of the utility model preferred embodiment.

Embodiment

In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment the technical solution of the utility model is further introduced and explanation.

Embodiment

Extremely shown in Figure 9 such as Fig. 1.Fig. 1 is the structural representation of the utility model preferred embodiment, the present embodiment is the multistage Atmospheric particulates cutter of a kind of PM10 for low discharge (16.67L/min) and PM2.5, the use aluminum alloy materials is made, and comprises for separating of greater than the primary separation device of 10 micron particles things with for separating of the secondary tripping device of 10～2.5 micron particles things.The top cover of the multistage Atmospheric particulates cutter of the present embodiment is by forming with Cross Recess Head Screw 1, small washer, spring washer and nut sequentially fixing upper cover 2, cylindrical fly net 5 and lower cover cap 3, and be covered on the top of primary separation device, have rainproof, insect protected, prevent the effect of bulky grain thing.The top of primary separation device is that a bottom is obconic cylindrical drum 6, its turbination bottom and 8 riveted joints of top, primary, impact chamber, and to be provided with an internal diameter between the two be 67 millimeters, wire diameter is 2.65 millimeters O RunddichtringO.Top, primary, impact chamber 8 is provided with the externally threaded connector in a M64 * 8 and is threaded with bottom, primary, impact chamber 9.

Fig. 2 is the primary nozzle 7 of the present embodiment, cylindrical, it highly is 47 ± 0.05 millimeters, air intake opening 21 internal diameters of primary nozzle 7 are 18.5 millimeters, external diameter is the 20+0.015 millimeter, gas outlet 22 internal diameters of primary nozzle 7 are 12.8 ± 0.015 millimeters, and external diameter is 16 millimeters, and the surfaceness of primary nozzle 7 is 1.6 microns.The gas outlet 22 of primary nozzle 7 is closely inserted in the air intake opening on top, primary, impact chamber 8, and made to primary nozzle 7 and the distance of impulse chamber bottom 9 is 15 millimeters.

Fig. 3 is the bottom, primary, impact chamber 9 of the present embodiment, cylindrical, it highly is 133 millimeters, external diameter is 70 millimeters, internal diameter is 62 millimeters, and it is 20 millimeters that the place, gas outlet of bottom, primary, impact chamber is provided with a height, the internal thread of M64 * 8, it is 10 millimeters that bottom, primary, impact chamber 9 also is provided with a height that is used for connection top, primary, impact chamber 8, the internal thread of M64 * 8.This bottom, primary, impact chamber 9 is provided with and raises up and equally distributed three snorkels 10, its bottom sides also is provided with one with the dry hole 23 of G1/2 internal thread, dry hole logical 23 is crossed a joint 11 that cooperates with it and is connected with adapter 12, adapter 12 is connected with dehumidifying bottle 13 with the R1/4 internal thread interface again, and dehumidifying bottle 13 interior filling gels play desiccation.The gas outlet of bottom, primary, impact chamber 9 and the interface 14 of giving vent to anger are provided with the external thread of M64 * 8 and threaded one end that external diameter is 70 millimeters is connected, the height of this interface 14 of giving vent to anger is 75 millimeters, the internal diameter of its other end is 32 millimeters, and be embedded with O type circle, be used for connecting secondary tripping device, also can connecting external diameter be 32 millimeters sampling pipe, directly make the PM10 cutter.

Secondary tripping device is comprised of secondary nozzle 16, secondary impulse chamber and escape pipe 19.The height of secondary nozzle 16 is 100 millimeters, and the external diameter of its air intake opening 25 is 32 millimeters, can be connected with the interface 14 of giving vent to anger, and its gas outlet 26 internal diameters are 3.9 ± 0.01 millimeters.The lower end 24 of secondary nozzle is provided with the internal thread that specification is M68, is used for being provided with externally threaded threaded one end with escape pipe 19 and is connected, and be provided with one 60 millimeters O RunddichtringO between the two.

Secondary impulse chamber comprises 20 staving 18 and circumferential butts 17 to extension all around at the bottom of a barrel, and the internal diameter of staving 18 is 38 millimeters, highly is 15.7 millimeters; The diameter at the bucket end 20 is 63.5 millimeters, thickness is 3.8 millimeters, 20 extension is provided with equally distributed three pores 30 at the bottom of bucket, and the bucket end 20 is intercalated in the interface of secondary nozzle 16 and escape pipe 19, and making the gas outlet 26 of secondary nozzle 16 and the distance of bucket at the end 20 is 13.2 millimeters; The height of circumferential butt 17 is 11.5 millimeters, and external diameter is 46 millimeters, and internal diameter is 27.5 millimeters, and is the opening part that 37.5 millimeters O RunddichtringO is fixed in circumferential butt 17 cylindrical shell 18 by internal diameter.Below circumferential butt 17, be provided with a glass fiber filter 31 that is coated with silicone oil.

Under the working point of cutter flow (16.67L/min), adopt single disperse phase fluorescein ammonium spheroidal particle (C ₂₀H ₁₅O ₅N) the particle trapping efficient of primary separation device detected, produce single disperse phase spheroidal particle of 7 kinds of different-grain diameters in 5～17 micrometer ranges, the following table is to utilize the arresting efficiency data of the product test gained of the present embodiment: (with reference to Figure 10)

Aerodynamic size d a(micron)	5	7	9	10	12	14	17
								Average arresting efficiency (%)	91.9	85.1	58.1	49.8	38.6	23.3	9.3

The regression equation of arresting efficiency is:

$\mathrm{\η}=111.8+0.586d_a-1.017d_a^2+0.037d_a^3$

Regression result: d _A50=10.3 μ m, $\frac{d_{a16}}{d_{a50}}=1.5,$ $\frac{d_{a50}}{d_{a84}}=1.6$

Under the working point of cutter flow (16.67L/min), adopt single disperse phase fluorescein ammonium spheroidal particle (C ₂₀H ₁₅O ₅N) the particle trapping efficient of multistage Atmospheric particulates cutter detected, produce single disperse phase spheroidal particle of 6 kinds of different-grain diameters in 1.7～3.0 micrometer ranges, the following table is the arresting efficiency data of test gained: (with reference to Figure 11)

Aerodynamic size d a(micron)	1.7	2.0	2.3	2.5	2.7	3.0
							Average arresting efficiency (%)	87.6	71.8	61.2	47.3	32.5	21.2

The regression equation of arresting efficiency is:

$\mathrm{\η}=-56.65+250.8d_a-127.8d_a^2+17.58d_a^3$

Regression result: d _A50=2.4 μ m, $\frac{d_{a16}}{d_{a50}}=\frac{d_{a50}}{d_{a84}}=1.3$

More than be that the multistage Atmospheric particulates cutter of the utility model is set forth; be used for helping to understand the utility model; but embodiment of the present utility model is not restricted to the described embodiments; anyly do not deviate from the change done under the utility model principle, modification, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.

Claims (10)

1. multistage Atmospheric particulates cutter is characterized in that: comprise a primary nozzle (7), a primary, impact chamber, a level nozzle (16) of successively sealing serial connection, level impulse chamber and an escape pipe (19); Described primary nozzle (7) is closely inserted the air intake opening of described primary, impact chamber, and the bottom (9) of described primary, impact chamber is provided with at least one upwardly extending snorkel (10), and the air intake opening of this snorkel (10) is communicated with the gas outlet of primary, impact chamber; The gas outlet of described primary, impact chamber is connected with the air intake opening (25) of secondary nozzle (16); The gas outlet (26) of described secondary nozzle (16) is connected with the air intake opening of secondary impulse chamber, and a filter membrane (31) is located to be provided with in the gas outlet (26) of this secondary nozzle (16); The top of described secondary impulse chamber is provided with the blow vent that is communicated with secondary impulse chamber gas outlet; The gas outlet of described secondary impulse chamber is connected with escape pipe (19).

2. described multistage Atmospheric particulates cutter according to claim 1, it is characterized in that: described secondary impulse chamber comprises that (20) are to the staving (18) and the circumferential butt (17) that extend at the bottom of one barrel all around, described circumferential butt (17) lid is located at the opening of staving (18), and the extension of the described bucket end (20) is provided with at least one pore (30).

3. described multistage Atmospheric particulates cutter according to claim 1, it is characterized in that: described primary, impact chamber comprises top, primary, impact chamber (8), bottom, primary, impact chamber and the interface of giving vent to anger (14) that is threaded connection successively.

4. described multistage Atmospheric particulates cutter according to claim 1, it is characterized in that: the gas outlet (22) of described primary nozzle (7) is 15 millimeters with the distance of bottom, primary, impact chamber (9); The gas outlet (26) of described secondary nozzle (16) is 13.2 millimeters with the distance of secondary impulse chamber bottom.

5. described multistage Atmospheric particulates cutter according to claim 1 is characterized in that: the bottom (9) of described primary, impact chamber is provided with a dry hole (23) that is connected with outside drying bottle by joint (11).

6. described multistage Atmospheric particulates cutter according to claim 1, it is characterized in that: the top of described primary, impact chamber and a bottom are the bottom riveted joint of obconic cylindrical drum (6), and the top cover of described cylindrical drum (6) is provided with a top cover.

7. described multistage Atmospheric particulates cutter according to claim 6 is characterized in that: described top cover comprises by the screw upper outer cover (2), cylindrical fly net (5) and the lower outer cover (3) that are fixedly connected with of order from the top down.

8. described multistage Atmospheric particulates cutter according to claim 1, it is characterized in that: the surfaceness of described primary nozzle is 1.6 microns.

9. described multistage Atmospheric particulates cutter according to claim 1, it is characterized in that: described filter membrane (31) is for being coated with the glass fiber filter of silicone oil.

10. described multistage Atmospheric particulates cutter according to claim 2, it is characterized in that: described staving (18) closely is connected by the O RunddichtringO with circumferential butt (17).

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