CN215196861U - Standard PSL aerosol particle generating device - Google Patents

Abstract

The utility model discloses a standard PSL aerosol particle generating device, including fog branch road, dry branch road and blending machine, fog branch road is equipped with fog generator and electrostatic eliminator in proper order on, and dry branch road is equipped with the heating pipe, is equipped with aerosol entry, aerosol export and hot-blast entry on the blending machine, and electrostatic eliminator and aerosol entry linkage, heating pipe and hot-blast entry linkage, fog branch road and dry branch road are external compressed gas respectively. The device can produce no static, no adsorptivity, dry standard PSL aerosol particle, improves subsequent calibration accuracy.

Description

Standard PSL aerosol particle generating device

Technical Field

The utility model relates to an air cleaning and filtration technology field especially relate to a standard PSL aerosol particle generating device.

Background

When the cutting efficiency of a particle size cutter for sampling environmental particles is measured and a particle counter adopting the light scattering principle is calibrated, standard PSL (polystyrene) pellets with known particle sizes are commonly used as standard particles. However, standard PSL beads need to be in an aerosol state when in use, and in this case, a standard PSL aerosol particle generating device needs to be used. Common aerosol particle generating device does not possess the link of heating and eliminating static to the particle in the existing market, causes the standard particle size distribution after the generation comparatively dispersed easily, influences the precision of calibration, and can cause the pipe wall adsorption loss of standard particle owing to the existence of static.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

To the problem pointed out in the background art, the utility model provides a standard PSL aerosol particle generating device, it can produce no static, no adsorptivity, dry standard PSL aerosol particle, improves subsequent calibration accuracy.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

the utility model provides a standard PSL aerosol particle generating device, include:

the atomizing branch is sequentially provided with an atomizer and a static eliminator;

a drying branch, on which a heating pipe is arranged;

the blending device is provided with an aerosol inlet, an aerosol outlet and a hot air inlet, the static eliminator is connected with the aerosol inlet, and the heating pipe is connected with the hot air inlet;

wherein, the fogging branch and the drying branch are respectively externally connected with compressed air.

In some embodiments of the present application, the electrostatic eliminator further comprises an electric control unit, and the heating pipe and the electrostatic eliminator are respectively connected to the electric control unit.

In some embodiments of this application, still be equipped with humidity measurement interface on the blending machine, humidity measurement interface with humidity transducer on the electrical unit is connected.

In some embodiments of the present application, the mixer is further provided with an exhaust port.

In some embodiments of the present application, still be equipped with air-vent valve and manometer on the fog branch road, the manometer is used for showing the pressure value that the air-vent valve was measured.

In some embodiments of the present application, a flow meter is further disposed on the drying branch.

In some embodiments of this application, still include ooff valve and three way connection who connects gradually, the external compressed gas of ooff valve, one of them joint of three way connection with it connects to send out the fog branch road, another joint of three way connection with dry branch road connects.

In some embodiments of the present application, the compressed gas is clean and dry compressed gas.

Compared with the prior art, the utility model discloses an advantage is with positive effect: one path of compressed air enters a fogging branch, atomized standard particle size aerosol is formed by a fogging device, then the aerosol flows into a static eliminator to form a charge neutral state, the electrostatic adsorption loss in a subsequent pipeline is reduced, and charge neutral aerosol particles enter a mixer through an aerosol inlet to be dried and uniformly mixed; during another way compressed gas flowed into drying branch, by further drying and heating under the effect of heating pipe, form high-temperature hot-blast, flow into the blending machine through hot-blast entry and carry out the drying to the aerosol particle, detach the steam of adhesion on the PSL standard particle to from aerosol export output no static, no adsorptivity, dry standard PSL aerosol particle, improve subsequent calibration precision, avoid steam to the influence of follow-up optical instrument calibration.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a standard PSL aerosol particle generating device according to an embodiment.

Reference numerals:

10-a fogging branch, 11-a fogging device, 12-a static eliminator, 13-a pressure regulating valve and 14-a pressure gauge;

20-a drying branch, 21-a heating pipe and 22-a flowmeter;

30-a mixer, 31-an aerosol inlet, 32-an aerosol outlet, 33-a hot air inlet, 34-a humidity measuring interface and 35-an exhaust port;

40-an electronic control unit;

51-switch valve, 52-three-way joint.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, the standard PSL aerosol particle generating device disclosed in this embodiment mainly includes a fogging branch 10, a drying branch 20, and a mixer 30.

Wherein, the atomizing branch 10 is sequentially provided with an atomizing device 11 and an electrostatic eliminator 12, the drying branch 20 is provided with a heating pipe 21, and the blending device 30 is provided with an aerosol inlet 31, an aerosol outlet 32 and a hot air inlet 33. The static eliminator 12 is connected with the aerosol inlet 31, and the heating pipe 21 is connected with the hot air inlet 33. The atomizing branch 10 and the drying branch 20 are respectively externally connected with compressed air.

The atomizer 11 adopts the venturi principle, mixes the PSL pellet and the deionized water to form the turbid liquid and pours into the liquid storage bottle of the atomizer 11 when using, and one way of compressed gas gets into the nozzle of the atomizer 11, utilizes the venturi principle to suck the turbid liquid into the nozzle and spout to form the vaporific standard particle size aerosol, and then the aerosol flows into the static eliminator 12 to form the charge neutral state, has reduced the electrostatic adsorption loss in the follow-up pipeline, and the charge neutral aerosol particle gets into the blending machine 30 through the aerosol entry 31 and waits to dry the mixing.

The other path of compressed air flows into the drying branch 20, is further dried and heated under the action of the heating pipe 21 to form high-temperature hot air, flows into the blending device 30 through the hot air inlet 33 to dry the aerosol particles, and removes the water vapor adhered to the PSL standard particles, so that the standard PSL aerosol particles without static electricity, adsorbability and dryness are output from the aerosol outlet, the subsequent calibration precision is improved, and the influence of the water vapor on the subsequent calibration of an optical instrument is avoided.

In some embodiments of the present application, the standard PSL aerosol particle generating device further includes an electronic control unit 40, and the static eliminator 12 and the heating pipe 21 are respectively connected to the electronic control unit 40, so as to realize automatic control of the static eliminator 12 and the heating pipe 21.

The blending machine 30 is further provided with a humidity measuring interface 34, and the humidity measuring interface 34 is connected with a humidity sensor on the electronic control unit 40.

The humidity sensor arranged on the electronic control unit 40 measures the relative humidity value of the aerosol in the blending machine 30 through the humidity measuring interface 34, and adjusts the power of the heating pipe 21 in real time to keep the relative humidity in the blending machine 30 at a proper value.

The mixer 30 is also provided with an exhaust port 35 for discharging excess aerosol. The reason is that the flow of dilution gas plus fogging tends to be greater than the flow collected at the back end, and in order to prevent the collection end from overshooting, a portion of the aerosol needs to be discharged to the outside.

In some embodiments of the present application, the mist generating branch 10 is further provided with a pressure regulating valve 13 and a pressure gauge 14, the pressure gauge 14 is configured to display a pressure value measured by the pressure regulating valve 13, and the pressure regulating valve 13 is disposed upstream of the mist generator 11.

The compressed air flowing into the atomizing branch 10 is stabilized at a suitable atomizing pressure by the regulating action of the pressure regulating valve 13, so as to improve the effect of generating aerosol particles by the atomizer 11.

In some embodiments of the present application, a flow meter 22 is further disposed on the drying branch 20, the flow meter 22 is disposed upstream of the heating pipe 21, and the flow meter 22 is used for measuring and displaying the gas flow in the drying branch 20 in real time.

In some embodiments of the present application, the standard PSL aerosol particle generating device further includes a switch valve 51 and a three-way joint 52, which are sequentially connected, the switch valve 51 is externally connected with compressed air, one of the joints of the three-way joint 52 is connected with the fogging branch 10 through a PU pipe, and the other joint of the three-way joint 52 is connected with the drying branch 20 through a PU pipe. Compressed air is connected from the outside through a main pipeline, and then is divided into two paths through the three-way joint 52, and the two paths respectively flow into the fogging branch 10 and the drying branch 20, so that the structure is simple and compact.

The compressed gas is preferably clean and dry compressed gas so as to reduce the adverse effect of the external gas on the device as much as possible.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (8)

1. A standard PSL aerosol particle generating device, comprising:

the atomizing branch is sequentially provided with an atomizer and a static eliminator;

a drying branch, on which a heating pipe is arranged;

the blending device is provided with an aerosol inlet, an aerosol outlet and a hot air inlet, the static eliminator is connected with the aerosol inlet, and the heating pipe is connected with the hot air inlet;

wherein, the fogging branch and the drying branch are respectively externally connected with compressed air.

2. A standard PSL aerosol particle generating device according to claim 1,

the electrostatic eliminator and the heating pipe are respectively connected with the electric control unit.

3. A standard PSL aerosol particle generating device according to claim 2,

and a humidity measuring interface is also arranged on the blending machine and connected with a humidity sensor on the electric control unit.

4. A standard PSL aerosol particle generating device according to claim 1,

the mixer is also provided with an exhaust port.

5. A standard PSL aerosol particle generating device according to claim 1,

the fog generating branch is further provided with a pressure regulating valve and a pressure gauge, and the pressure gauge is used for displaying the pressure value measured by the pressure regulating valve.

6. A standard PSL aerosol particle generating device according to claim 1,

and a flowmeter is also arranged on the drying branch.

7. A standard PSL aerosol particle generating device according to claim 1,

still including the ooff valve and the three way connection who connect gradually, the external compressed gas of ooff valve, one of them joint of three way connection with it connects to send out the fog branch road, another joint of three way connection with dry branch road is connected.

8. A standard PSL aerosol particle generating device according to claim 1,

the compressed gas is clean and dry compressed gas.

Images