CN212340782U

CN212340782U - Portable aerosol sampler

Info

Publication number: CN212340782U
Application number: CN202021821498.5U
Authority: CN
Inventors: 黄婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-01-12
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a portable aerosol sample thief, by enrichment head, electric quantity display screen, starting switch, handle, lithium cell, fan, host computer switch, circuit control panel, level sensor, negative pressure pipeline, casing, sampling pipe, hold chamber, annular collection hole, spiral trapezoid flabellum, blast pipe, exhaust hole and air inlet and constitute, the handle is arranged in on the casing lateral surface, casing inside has put and has held the chamber. The utility model has the advantages that the spiral trapezoidal fan blades in the ring-shaped collecting hole of the collecting head of the sampler can enhance the cyclone stability, improve the aerosol separation efficiency, reduce the formation of bottom vortex, prevent the secondary aerosol of the sampling liquid from escaping, and improve the aerosol collecting efficiency by the liquid phase capturing technology; the sample liquid can be intelligently monitored, and the sample liquid sampled for a long time is prevented from evaporating; the structure is simple, the operation is convenient, the sample pollution part is easy to replace in the sampling process, and the rapid and repeated sampling on site is facilitated; remote control sampling can be carried out, and the safety of workers in high-risk fields is fully ensured.

Description

Portable aerosol sampler

Technical Field

The utility model relates to a pollution detection field, in particular to environmental aerosol pollution detection specifically is a portable aerosol sample thief.

Background

The existing liquid phase sampler and large-flow liquid biological aerosol sampler adopt a brand-new cyclone type sampling technology to collect biological samples in air, and the samples are dissolved in liquid, so that the liquid phase sampler and the large-flow liquid biological aerosol sampler are suitable for various types of experimental analysis.

The problems of the existing cyclone liquid-phase aerosol sampler are as follows: 1. the aerosol collection efficiency is low, so that the concentration of the sample liquid is not high, false negative is easy to appear when the aerosol is directly used for detection, and the sample liquid is usually required to be concentrated and then detected; 2. the liquid loss of the sampler is fast, which is not beneficial to long-time continuous sampling; 3. the sampling pollution part is not easy to replace, so that the on-site secondary sampling cross pollution is caused; 4. the structure operation is complicated, which is not beneficial to the on-site rapid sampling and disinfection.

SUMMERY OF THE UTILITY MODEL

The technique that exists is not enough to the aforesaid, the utility model aims at providing a portable aerosol sample thief, its collection hole embeds has the trapezoidal flabellum of spiral, and whirlwind stability is better, and collection efficiency is high, and can sample in succession for a long time, and the sampling pollution parts is also easily changed.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a portable aerosol sampler is characterized by comprising an enrichment head, an electric quantity display screen, a starting switch, a handle, a lithium battery, a fan, a host switch, a circuit control panel, a liquid level sensor, a negative pressure pipeline, a casing, a sampling pipe, a containing cavity, an annular collecting hole, spiral trapezoidal fan blades, an exhaust pipe, an exhaust hole and an air inlet, wherein the handle is arranged on the outer side surface of the casing, the containing cavity is arranged in the casing, the sampling pipe is arranged in the containing cavity, the liquid level sensor is arranged at a position close to the bottom of the cavity wall of the containing cavity, the circuit control panel is arranged in the casing and below the containing cavity, the circuit control panel is electrically connected with the liquid level sensor, the enrichment head is connected with the top end of the sampling pipe, the exhaust pipe is arranged at the bottom of the enrichment head, the upper section of the exhaust pipe is of a conical structure, the spiral trapezoidal, the lower section of the exhaust pipe is a straight pipe, the lower end of the exhaust pipe extends downwards and is inserted into the sampling pipe, the bottom of the enrichment head is provided with an annular acquisition hole and is positioned outside the upper section of the exhaust pipe, the annular acquisition hole is connected with the sampling pipe, the outer side surface of the enrichment head is provided with an air inlet, the annular acquisition hole is communicated with the air inlet and the sampling pipe, an exhaust channel is arranged inside the enrichment head, the bottom of the enrichment head is provided with an exhaust hole, the exhaust channel is communicated with the exhaust hole and the exhaust pipe, a negative pressure pipeline is arranged in the casing, an inlet at the top end of the negative pressure pipeline is correspondingly connected with the exhaust hole, the fan is arranged in the casing, an inlet of the fan is correspondingly communicated with an outlet of the negative pressure pipeline, an outlet of the fan is communicated with the outside of the casing, the, the lithium battery power supply device is characterized in that an electric quantity display screen for displaying the residual electric quantity of the lithium battery is arranged at the top of the casing, a starting switch for controlling power on and power off is arranged at the top of the casing, and a host switch for controlling the work of the fan is arranged on the outer side surface of the casing, which is close to the bottom.

Preferably, the section of the annular collecting hole is trapezoidal, the width of the annular collecting hole is gradually narrowed from top to bottom, and an included angle between the inclined plane of the annular collecting hole and the vertical plane of the annular collecting hole is 0-50 degrees.

Preferably, a sealing ring is arranged between the top end of the negative pressure pipeline and the exhaust hole, the negative pressure pipeline is composed of a vertical pipe and a horizontal pipe, a plurality of sealing rings are arranged at the sleeve connection positions of the horizontal pipe and the vertical pipe, a groove is formed in the position, corresponding to the sealing ring, of the negative pressure pipeline, and the sealing rings are embedded in the groove.

Preferably, the bottom of the enrichment head is provided with an annular boss, the outer wall of the annular boss is provided with a groove or the inner wall of the annular boss is provided with a thread, and the groove is internally provided with a sealing ring.

Preferably, the fan is a turbine high-air-volume fan.

Preferably, a wireless communication module is arranged on the circuit control board.

Preferably, the sampling tube is a circular tube or a centrifugal tube;

preferably, an alarm is arranged on the casing and electrically connected with the circuit control board.

The beneficial effects of the utility model reside in that: spiral trapezoidal fan blades in the annular collecting hole of the enriching head enhance cyclone stability, improve aerosol separation efficiency, reduce formation of bottom eddy, prevent secondary aerosol of the sampling liquid from escaping, and improve aerosol collecting efficiency by a liquid phase capturing technology; the sample liquid can be intelligently monitored, and the sample liquid sampled for a long time is prevented from evaporating; the structure is simple, the operation is convenient, the sample pollution part is easy to replace in the sampling process, and the rapid and repeated sampling on site is facilitated; remote control sampling can be carried out, and the safety of workers in high-risk fields is fully ensured.

Drawings

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

Fig. 1 is a schematic structural view of a portable aerosol sampler of the present invention;

FIG. 2 is a perspective view of the portable aerosol sampler of the present invention;

FIG. 3 is a top view of a portable aerosol sampler of the present invention;

FIG. 4 is a schematic structural view of an enrichment head of a portable aerosol sampler according to the present invention;

FIG. 5 is a cross-sectional view of a spiral trapezoid fan blade of the portable aerosol sampler of the present invention;

FIG. 6 is a perspective view of the enriching head of the portable aerosol sampler of the present invention;

FIG. 7 is a perspective view of a spiral trapezoidal blade of the portable aerosol sampler of the present invention;

fig. 8 is a schematic structural view of a sampling tube of a portable aerosol sampler according to the present invention;

description of reference numerals:

enrichment head 1, recess 2, electric quantity display screen 3, starting switch 4, handle 5, lithium cell 6, fan 7, host switch 8, sealing washer 9, circuit control panel 10, level sensor 11, negative pressure pipeline 12, casing 13, sampling pipe 14, hold chamber 15, annular collection hole 16, spiral trapezoid flabellum 17, blast pipe 18, exhaust hole 19, air inlet 20, screw thread 21, sampling liquid 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-8, a portable aerosol sampler comprises an enrichment head 1, a power display screen 3, a start switch 4, a handle 5, a lithium battery 6, a blower 7, a host switch 8, a circuit control panel 10, a liquid level sensor 11, a negative pressure pipeline 12, a casing 13, a sampling tube 14, a containing cavity 15, an annular collecting hole 16, a spiral trapezoidal fan blade 17, an exhaust pipe 18, an exhaust hole 19 and an air inlet 20, wherein the handle 5 is arranged on the outer side surface of the casing 13, the containing cavity 15 is arranged in the casing 13, the sampling tube 14 is arranged in the containing cavity 15, the liquid level sensor 11 is arranged at a position close to the bottom of the containing cavity 15, the circuit control panel 10 is arranged in the casing 13 and below the containing cavity 15, the circuit control panel 10 is electrically connected with the liquid level sensor 11, the enrichment head 1 is connected with the top end of the sampling tube 14, the exhaust pipe 18 is arranged at the bottom of the enrichment, the upper section of the exhaust pipe 18 is of a conical structure, the conical surface of the upper section of the exhaust pipe 18 is provided with spiral trapezoidal fan blades 17, the lower section of the exhaust pipe 18 is a straight pipe, the lower end of the exhaust pipe extends downwards and is inserted into the sampling pipe 14, the bottom of the enrichment head 1 is provided with an annular collection hole 16 and is positioned outside the upper section of the exhaust pipe 18, the annular collection hole 16 is connected with the sampling pipe 14, the outer side surface of the enrichment head 1 is provided with an air inlet 20, the annular collection hole 16 is communicated with the air inlet 20 and the sampling pipe 14, an exhaust channel is arranged in the enrichment head 1, the bottom of the enrichment head 1 is provided with an exhaust hole 19, the exhaust channel is communicated with the exhaust hole 19 and the exhaust pipe 18, the shell 13 is internally provided with a negative pressure pipeline 12, the inlet at the top end of the negative pressure pipeline 12 is correspondingly connected with the exhaust hole 19, the fan 7 is, the outlet of the fan 7 is communicated with the outside of the casing 13, the fan 7 is electrically connected with the circuit control panel 10, the lithium battery 6 is arranged in the casing 13, the lithium battery 6 is electrically connected with the circuit control panel 10 and the fan 7, the top of the casing 13 is provided with the electric quantity display screen 3 for displaying the residual electric quantity of the lithium battery 6, the top of the casing 13 is provided with the starting switch 4 for controlling the power on and off, and the position, close to the bottom, of the outer side surface of the casing 13 is provided with the host switch 8 for controlling the work of the;

further, the section of the annular collecting hole 16 is trapezoidal, the width of the annular collecting hole gradually narrows from top to bottom, and an included angle between the inclined plane of the annular collecting hole 16 and the vertical plane of the annular collecting hole 16 is 0-50 degrees; the aerosol particles can be further accelerated, the separation inertia of the aerosol particles is enhanced, and the separation is facilitated;

furthermore, a sealing ring 9 is arranged between the top end of the negative pressure pipeline 12 and the exhaust hole 19, the negative pressure pipeline 12 is composed of a vertical pipe and a horizontal pipe, a plurality of sealing rings 9 are arranged at the sleeve joint positions of the horizontal pipe and the vertical pipe, a groove 2 is formed in the position, corresponding to the sealing ring 9, of the negative pressure pipeline 12, and the sealing ring 9 is embedded in the groove 2; the interface position is sealed, so that air leakage is avoided;

further, an annular boss is arranged at the bottom of the enrichment head 1, a groove 2 is formed in the outer wall of the annular boss or a thread 21 is arranged on the inner wall of the annular boss, and a sealing ring 9 is arranged in the groove 2; the enrichment head 1 is connected with the collection pipe in a sealing way by a thread 21 or a sealing ring 9;

further, the fan 7 is a turbine large air volume fan 7; the air exhaust effect is good;

further, a wireless communication module is arranged on the circuit control board 10; the wireless monitoring system can be connected with a mobile end upper computer through wireless signals, and further can realize remote wireless monitoring control;

furthermore, an alarm is arranged on the casing 13 and electrically connected with the circuit control board 10; can give an alarm when the liquid level is lower than the preset value.

When the sampling device is used, firstly, a sampling liquid 22 is added into a sampling pipe 14, the sampling liquid 22 can be distilled water, deionized water, virus buffer solution and other liquids, a liquid level sensor 11 detects the liquid level of the sampling liquid 22 in real time and transmits a detection signal to a circuit control board 10, and when the liquid level of the sampling liquid 22 is lower than a preset value, the circuit control board 10 controls an alarm to give an alarm;

when sampling is carried out, the fan 7 works, the fan 7 drives air to enter from an air inlet 20 of the enrichment head 1 and enter a sampling pipe 14 through an annular collection hole 16 of the enrichment head 1, spiral trapezoidal fan blades 17 are arranged in the annular collection hole 16 of the enrichment head 1 and are rectified by the spiral trapezoidal fan blades 17, the entered air forms a cyclone body, aerosol particles carried by air flow are separated from the air due to centrifugal force, the separated air is discharged into an exhaust channel in the enrichment head 1 through an exhaust pipe 18 in the center of the annular collection hole 16 of the enrichment head 1 and is discharged into a negative pressure pipeline 12 through an exhaust hole 19 of the enrichment head 1 and is discharged by the fan 7;

the bottom of the sampling pipe 14 is provided with sampling liquid 22, air carried particles entering the sampling pipe 14 are rectified by the spiral trapezoidal fan blades 17 of the enrichment head 1, the airflow is divided into a plurality of whirlwind flows, large-mass aerosol particles impact the side wall of the sampling pipe 14 due to centrifugal force and fall into the sampling liquid 22 to be captured, the plurality of whirlwind flows are beneficial to keeping the stability of the whirlwind in the sampling pipe 14, the vortex at the bottom is reduced, and the escape of secondary aerosol is reduced; the section of the annular collecting hole 16 of the enrichment head 1 is a trapezoidal pore channel with a wide upper part and a narrow lower part, aerosol particles are further accelerated in the pore channel, the separation inertia of the aerosol particles is enhanced, the separation is facilitated, because the sampling liquid 22 at the bottom is driven by cyclone in the sampling pipe 14 to do high-speed cyclone motion, the sampling liquid 22 is thrown to the side wall of the sampling pipe 14 by centrifugal force to form a liquid film, and the liquid film flows down along the side wall of the sampling pipe 14 again along the action of liquid accumulation and gravity to enter the sampling liquid 22 and circulates in sequence;

in the circulation process, the sampling liquid 22 in the sampling pipe 14 is humidified, collided, captured and separated with aerosol particles carried in the air flow; due to the protection of the sampling liquid 22, the damage of biological aerosol particles is reduced, and the aerosol collection efficiency is further improved; and the sample pollution part of the sampler is the sampling tube 14, and the replacement is simple and convenient.

The spiral trapezoidal fan blades 17 in the annular collecting hole 16 of the enrichment head 1 designed by the utility model can enhance the cyclone stability, improve the aerosol separation efficiency, reduce the formation of bottom vortex, prevent the escape of secondary aerosol of the sampling liquid 22, and improve the aerosol collection efficiency by the liquid phase capturing technology; the sample liquid can be intelligently monitored, and the sample liquid sampled for a long time is prevented from evaporating; the structure is simple, the operation is convenient, the sample pollution part is easy to replace in the sampling process, and the rapid and repeated sampling on site is facilitated; remote control sampling can be carried out, and the safety of workers in high-risk fields is fully ensured.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A portable aerosol sampler is characterized by comprising an enrichment head, an electric quantity display screen, a starting switch, a handle, a lithium battery, a fan, a host switch, a circuit control panel, a liquid level sensor, a negative pressure pipeline, a casing, a sampling pipe, a containing cavity, an annular collecting hole, spiral trapezoidal fan blades, an exhaust pipe, an exhaust hole and an air inlet, wherein the handle is arranged on the outer side surface of the casing, the containing cavity is arranged in the casing, the sampling pipe is arranged in the containing cavity, the liquid level sensor is arranged at a position close to the bottom of the cavity wall of the containing cavity, the circuit control panel is arranged in the casing and below the containing cavity, the circuit control panel is electrically connected with the liquid level sensor, the enrichment head is connected with the top end of the sampling pipe, the exhaust pipe is arranged at the bottom of the enrichment head, the upper section of the exhaust pipe is of a conical structure, the spiral trapezoidal, the lower section of the exhaust pipe is a straight pipe, the lower end of the exhaust pipe extends downwards and is inserted into the sampling pipe, the bottom of the enrichment head is provided with an annular acquisition hole and is positioned outside the upper section of the exhaust pipe, the annular acquisition hole is connected with the sampling pipe, the outer side surface of the enrichment head is provided with an air inlet, the annular acquisition hole is communicated with the air inlet and the sampling pipe, an exhaust channel is arranged inside the enrichment head, the bottom of the enrichment head is provided with an exhaust hole, the exhaust channel is communicated with the exhaust hole and the exhaust pipe, a negative pressure pipeline is arranged in the casing, an inlet at the top end of the negative pressure pipeline is correspondingly connected with the exhaust hole, the fan is arranged in the casing, an inlet of the fan is correspondingly communicated with an outlet of the negative pressure pipeline, an outlet of the fan is communicated with the outside of the casing, the, the lithium battery power supply device is characterized in that an electric quantity display screen for displaying the residual electric quantity of the lithium battery is arranged at the top of the casing, a starting switch for controlling power on and power off is arranged at the top of the casing, and a host switch for controlling the work of the fan is arranged on the outer side surface of the casing, which is close to the bottom.

2. The portable aerosol sampler according to claim 1, wherein the cross section of the annular collecting hole is trapezoidal, the width of the annular collecting hole gradually narrows from top to bottom, and the included angle between the inclined surface of the annular collecting hole and the vertical surface of the annular collecting hole is 0-50 degrees.

3. The portable aerosol sampler according to claim 1, wherein a sealing ring is disposed between the top end of the negative pressure pipe and the exhaust hole, the negative pressure pipe comprises a vertical pipe and a horizontal pipe, a plurality of sealing rings are disposed at the sleeved connection position of the horizontal pipe and the vertical pipe, a groove is formed in the negative pressure pipe corresponding to the sealing ring, and the sealing ring is embedded in the groove.

4. The portable aerosol sampler according to claim 1, wherein the enriching head has a ring-shaped boss at the bottom, the outer wall of the ring-shaped boss is provided with a groove or the inner wall of the ring-shaped boss is provided with a screw thread, and the groove is provided with a sealing ring.

5. The portable aerosol sampler of claim 1, wherein the fan is a turbine high-volume fan.

6. The portable aerosol sampler of claim 1, wherein the circuit control board has a wireless communication module disposed thereon.

7. The portable aerosol sampler of claim 1, wherein the sampling tube is a circular tube or a centrifuge tube.

8. The portable aerosol sampler of claim 1, wherein the housing has an alarm, the alarm being electrically connected to the circuit control board.