CN213022494U - Portable air sampler - Google Patents
Portable air sampler Download PDFInfo
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- CN213022494U CN213022494U CN202020416437.4U CN202020416437U CN213022494U CN 213022494 U CN213022494 U CN 213022494U CN 202020416437 U CN202020416437 U CN 202020416437U CN 213022494 U CN213022494 U CN 213022494U
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a portable air sampler, include: the device comprises a host, a sampling head and a collecting pipe; the sampling head is provided with a sampling head air inlet and a sampling head air outlet, and an air outlet channel is arranged in the sampling head and is used for communicating the sampling pipe with the sampling head air outlet; the collecting pipe is of a tubular structure with one open end, and sampling liquid is arranged in the collecting pipe; one end of the sampling head is detachably butted and sealed with the open end of the collecting pipe, more than one sampling head air inlet is formed in the sampling head and is communicated with the collecting pipe through an air inlet channel, air doped with particles enters the collecting pipe from the sampling head air inlet and the air inlet channel, the particles are dissolved in a sampling solution, and the gas is separated from the particles; one end of the air outlet channel extending into the collecting pipe is an inlet end, the inlet end is lower than the lower end face of the air inlet channel and higher than the liquid level of the sampling liquid in the collecting pipe, and is detachably connected with the host through the air outlet of the sampling head, wherein the joint of the air outlet of the sampling head and the host is sealed; the main machine is used for pumping out the gas in the collecting pipe.
Description
Technical Field
The utility model relates to a particulate matter sampling technical field, concretely relates to portable air sampler.
Background
In recent years, the problem of environmental air pollution in China is aggravated, the health of residents is seriously harmed, and the problem of monitoring and treating the environmental air is not moderate. There are a large number of particulate matter in the ambient air, such as bioaerosol (bacteria, viruses, fungi, etc.) particles and PM2.5 particles, among others. Studies have shown that many health problems are associated with air pollutants, especially with exposure to bioaerosols. The generation, diffusion and transmission of bioaerosols are likely to cause outbreaks of large-scale infectious diseases such as SARS, H1N1, Ebola, African swine fever, etc. The method can efficiently and quickly collect the microbial particles in the air, and is an important link for researching bioaerosol. With the development of rapid detection technologies, such as PCR, nucleic acid loop-mediated isothermal amplification technology, and enzyme-linked immunosorbent assay, rapid sampling equipment is urgently needed to sample bioaerosol and identify bioaerosol by matching with rapid detection equipment.
At present, Bertin Coriolis samplers based on a cyclone centrifugal principle and biosampler (SKC) samplers based on a liquid impact principle have the problems of inconvenience in carrying, use, disassembly, cleaning and the like, are long in sampling time and large in sample liquid amount, can perform subsequent detection only by concentration treatment, and are poor in timeliness.
Disclosure of Invention
In view of this, the utility model provides a portable air sampler can effectively improve sample thief collection efficiency, improves sample liquid concentration, and sample thief portable can dismantle and change or wash, can avoid the cross contamination of adjacent twice sampling.
The technical scheme of the portable air sampler is as follows: a portable air sampler comprising: the device comprises a host, a sampling head and a collecting pipe;
the sampling head is provided with a sampling head air inlet and a sampling head air outlet, and an air outlet channel is arranged in the sampling head and is used for communicating the sampling pipe with the sampling head air outlet;
the collecting pipe is of a tubular structure with one open end, and sampling liquid is arranged in the collecting pipe;
the connection relation of the sampler is as follows: one end of the sampling head is detachably butted with the open end of the collecting pipe, the butted part of the sampling head and the collecting pipe is sealed, more than one sampling head air inlet is formed in the sampling head, the sampling head air inlet is communicated with the interior of the collecting pipe through an air inlet channel, air doped with particles enters the collecting pipe from the sampling head air inlet and the air inlet channel, the particles are dissolved in a sampling solution, and the gas and the particles are separated and escape from the sampling solution; one end of the air outlet channel extending into the collecting pipe is an inlet end, the inlet end is lower than the lower end face of the air inlet channel and higher than the liquid level of the sampling liquid in the collecting pipe, and is detachably connected with the host through the air outlet of the sampling head, wherein the joint of the air outlet of the sampling head and the host is sealed; the main machine is used for pumping out the gas in the collecting pipe.
Preferably, the host includes: the air pump is connected with the air outlet of the main machine;
the air inlet of the host machine is arranged on the wall surface of the shell, the air inlet of the host machine is detachably connected with the air outlet of the sampling head so as to realize the connection of the sampling head and the host machine, the air guide pipe is arranged in the cavity in the shell, two ends of the air guide pipe are respectively communicated with the air inlet of the host machine and the air outlet of the host machine, the pipeline of the air guide pipe is provided with an air pump, and the air pump sucks the air in the collection pipe from the air inlet of the host; the control component is connected with the air pump and used for controlling the starting or the closing of the air pump and setting the working time of the air pump.
Preferably, the control assembly comprises: the device comprises a power supply, a circuit control board and a touch screen; the touch screen is arranged on the wall surface of the shell, and the power supply and the circuit control board are arranged in the inner cavity of the shell; the circuit control board is provided with a control circuit, and the power supply is connected with the control circuit and used for supplying power to the control circuit; the control circuit links to each other with the air pump, and the control circuit includes: the starting control circuit and the closing control circuit are respectively used for controlling the starting and the closing of the air pump; the touch screen is connected with the control circuit, and is provided with a start key, a close key and a display screen, wherein the start key is connected with the start control circuit, the close key is connected with the close control circuit, when the start key is pressed, the start control circuit on the circuit control board controls the air pump to start, and when the close key is pressed, the close control circuit on the circuit control board controls the air pump to close; the display screen is used for displaying the working time of the air pump from starting to closing or is used for setting the working time of the air pump after starting so as to control the air pump to be automatically closed.
Preferably, the host further comprises: the handle, handle and shell integrated into one piece make things convenient for the use and the carrying of sample thief.
Preferably, the end of the sampling head connected with the collection tube is of a cylindrical structure, so that the sampling head can be conveniently connected with the collection tube.
Preferably, the air inlet of the sampling head is arc-shaped, and the air inlet channel is spiral.
Preferably, the sampling head is further provided with a handle, and the handle is arranged on the sampling head and serves as a handheld operation end of the sampling head.
Preferably, the host further comprises: the tripod connecting piece is arranged at the bottom of the main machine and is used for being connected with a tripod.
Preferably, the collection tube is a transparent tube body, and the host is provided with a collection window for observing the sample liquid collected by the collection liquid in the collection tube in real time.
Has the advantages that:
(1) the utility model discloses a portable air sampler can effectively improve sample thief collection efficiency, improves sample liquid concentration, and sample thief portable can dismantle change or wash, can avoid the cross contamination of adjacent twice sampling.
Drawings
Fig. 1 is a schematic diagram of the sampler of the present invention.
Fig. 2 is the structure schematic diagram of the sampling head and the collecting tube in the sampler of the present invention.
The device comprises a main machine air inlet, a main machine air guide pipe, a triangular frame connecting piece, an air pump, a main machine air outlet, a power supply, a circuit control board, a touch screen, a handle, a sampling head, a collecting pipe, a sealing ring, a sampling head air inlet, a handle, a sampling pipe, a sealing ring, a sampling head air inlet, a sampling head air outlet, a sampling head air inlet, a sampling.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
Example 1:
the embodiment provides a portable air sampler, can effectively improve sample thief collection efficiency, improves sample liquid concentration, and sample thief portable can dismantle change or wash, can avoid the cross contamination of adjacent twice sampling.
As shown in fig. 1 and 2, the sampler includes: the main machine comprises a main machine, a sampling head 10 and a collecting pipe 11;
the host computer includes: the device comprises a shell, a host air inlet 1, an air guide pipe 2, an air pump 4, a host air outlet 5, a power supply 6, a circuit control board 7, a touch screen 8 and a handle 9;
the sampling head 10 is provided with a sampling head air inlet 13, a handle 14 and a sampling head air outlet 16, and an air outlet channel 15 is arranged in the sampling head and is used for communicating the collecting pipe 11 with the sampling head air outlet 16;
the collection tube 11 is a tubular structure with an opening at one end, and sampling liquid is arranged in the collection tube.
The connection relation of the sampler is as follows: one end of the sampling head 10 is of a cylindrical structure, the other end of the sampling head is provided with a handle 14, and the handle 14 is used for providing a handheld operation end so as to facilitate the disassembly and assembly of the sampling head 10 and the collection tube 11; the end of the cylindrical structure of the sampling head 10 is detachably butted with the open end of the collecting pipe 11, a sealing ring 12 is arranged at the butt joint of the end and the open end to realize sealing, more than one arc-shaped sampling head air inlet 13 is arranged on the upper end surface of the cylindrical structure of the sampling head 10 along the circumferential direction, the sampling head air inlet 13 is communicated with the interior of the collecting pipe 11 through an air inlet channel (which is spiral), air doped with particles enters from the sampling head air inlet 13 and flows into the collecting pipe 11 through the air inlet channel, the particles are dissolved in the sampling liquid, and the gas and the particles are separated and escape from the sampling liquid; the gas outlet channel 15 is arranged along a central axis of the end where the cylindrical structure of the sampling head 10 is located, the inlet end (lower than the plane of the gas inlet 13 of the sampling head and higher than the liquid level of the sampling liquid in the collection tube 11, so that the sampling liquid in the collection tube 11 is prevented from being sucked out from the gas outlet channel 15 and gas is ensured to flow out from the gas outlet channel 15 during sampling) of the gas outlet channel 15 extends into the collection tube 11, the outlet end (higher than the plane of the gas inlet 13 of the sampling head) is communicated with the gas guide tube 2 through the gas outlet 16 of the sampling head and the gas inlet 1 of the host machine in sequence and is used for guiding the gas in the collection tube 11 into the host machine, wherein the gas outlet 16 of the sampling head is detachably connected with the gas inlet 1;
the air inlet 1 of the host is arranged on the wall surface of the shell, and the handle 9 and the shell are integrally formed, so that the sampler is convenient to carry; the air guide pipe 2 is arranged in the cavity inside the shell, two ends of the air guide pipe are respectively communicated with the air inlet 1 and the air outlet 5 of the host machine, the pipeline of the air guide pipe 2 is provided with an air pump 4, the inlet end of the air pump 4 is communicated with the air inlet 1 of the host machine, the outlet end of the air pump 4 is communicated with the air outlet 5 of the host machine, and the air pump 4 is used for sucking the air in the collection pipe 11 into the air guide pipe and discharging the air from the air outlet;
the wall surface of the shell is also provided with a touch screen 8, and the inner cavity of the shell is also provided with a power supply 6 and a circuit control board 7; the circuit control board 7 is provided with a control circuit, and the power supply 6 is connected with the control circuit and used for supplying power to the control circuit; the control circuit is connected with the air pump 4, and the control circuit includes: the start control circuit and the close control circuit are respectively used for controlling the start and the close of the air pump 4; the touch screen 8 is connected with the control circuit, and is provided with a start key, a close key and a display screen, wherein the start key is connected with the start control circuit, the close key is connected with the close control circuit, when the start key is pressed, the start control circuit on the circuit control board 7 controls the air pump 4 to start, and when the close key is pressed, the close control circuit on the circuit control board 7 controls the air pump 4 to close; the display screen is used for displaying the working time of the air pump 4 from starting to closing or is used for setting the working time (corresponding to the sampling time of the sampling device) of the air pump 4 after starting so as to control the air pump 4 to automatically close.
The working principle of the sampler is as follows: due to the detachable connection of the host, the sampling head 10 and the collection tube 11, the disassembly and assembly of the sampler are convenient, the sterilization of the sampling part (the sampling head 10 and the collection tube 11) is convenient, and the cross contamination of two adjacent samplings is avoided; after the air pump 4 starts, take out the gas in air duct 2 and the collection pipe 11, form the negative pressure in the collection pipe 11, the air that is doped with the particulate matter passes through sampling head air inlet 13 and gets into collection pipe 11 and forms whirl A (rotatory air current), the overwhelming majority of whirl A is the spiral downward flow along the pipe wall of collection pipe 11, particulate matter in whirl A produces centrifugal force at rotatory in-process, throw the particulate matter that density is greater than gas to the pipe wall, it is rotatory along with whirl A to gather collection liquid in the pipe 11, pipe wall at collection pipe 11 forms whirl B (rotatory liquid), whirl B that particulate matter collision collection liquid in whirl A formed is caught by the collection liquid, gas is taken out by air pump 4 after looping through outlet channel 15 and air duct 2.
Example 2:
on the basis of embodiment 1, the host further includes: the tripod connecting piece 3, the tripod connecting piece 3 sets up in the host computer bottom for be connected with the tripod, need not additionally set up the tripod connecting piece, use more convenient and fast.
Example 3:
on the basis of embodiment 1 or 2, the power supply 6 adopts a rechargeable lithium battery, and can charge the power supply at any time to ensure continuous power supply.
Example 4:
on the basis of embodiment 1 or 2 or 3, the selection principle of the air pump 4 follows: the flow is big, the velocity of flow is stable, small, light in weight and be convenient for integrate etc. and specific control range is: the flow is 15-30L/min, the voltage is 12-24V, and the current is 2-5A, so that the requirements of stable and efficient work and convenient integration can be met.
Example 5:
on the basis of the embodiment 1 or 2 or 3 or 4, the collection tube 11 is a transparent tube body, and the host is provided with a collection window for observing the sample liquid collected by the collection liquid in the collection tube 11 in real time.
Example 6:
on the basis of the embodiment 1 or 2 or 3 or 4 or 5, the whole machine is made of plastic, so that the whole machine is light in weight, light and portable.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A portable air sampler, comprising: the device comprises a host, a sampling head (10) and a collecting pipe (11);
the sampling head (10) is provided with a sampling head air inlet (13) and a sampling head air outlet (16), and an air outlet channel (15) is arranged in the sampling head and is used for communicating the collecting pipe (11) with the sampling head air outlet (16);
the collecting pipe (11) is of a tubular structure with one open end, and sampling liquid is arranged in the collecting pipe;
the connection relation of the sampler is as follows: one end of the sampling head (10) is detachably butted with the open end of the collecting pipe (11), the butted position of the sampling head and the collecting pipe is sealed, more than one sampling head air inlet (13) is formed in the sampling head (10), the sampling head air inlet (13) is communicated with the interior of the collecting pipe (11) through an air inlet channel, air doped with particles enters the collecting pipe (11) from the sampling head air inlet (13) and the air inlet channel, the particles are dissolved in a sampling solution, and gas is separated from the particles and escapes the sampling solution; one end of the air outlet channel (15) extending into the collection pipe (11) is an inlet end, the inlet end is lower than the lower end face of the air inlet channel and higher than the liquid level of the sampling liquid in the collection pipe (11), and is detachably connected with the host machine through a sampling head air outlet (16), wherein the connection part of the sampling head air outlet (16) and the host machine is sealed; the main machine is used for pumping out the gas in the collection pipe (11).
2. The portable air sampler of claim 1, wherein the host comprises: the device comprises a shell, a main machine air inlet (1), an air guide pipe (2), an air pump (4), a main machine air outlet (5) and a control assembly;
the air inlet (1) of the host is arranged on the wall surface of the shell, the air inlet (1) of the host is detachably connected with the air outlet (16) of the sampling head so as to realize the connection of the sampling head (10) and the host, the air duct (2) is arranged in the cavity inside the shell, the two ends of the air duct are respectively communicated with the air inlet (1) of the host and the air outlet (5) of the host, the pipeline of the air duct (2) is provided with an air pump (4), and the air pump (4) sucks the air in the collecting pipe (11) from the air inlet (1) of the host and discharges the air from the air outlet (5; the control component is connected with the air pump (4) and is used for controlling the starting or the closing of the air pump (4) and setting the working time of the air pump (4).
3. The portable air sampler of claim 2, wherein the control assembly comprises: the device comprises a power supply (6), a circuit control board (7) and a touch screen (8); the touch screen (8) is arranged on the wall surface of the shell, and the power supply (6) and the circuit control board (7) are arranged in an inner cavity of the shell; the circuit control board (7) is provided with a control circuit, and the power supply (6) is connected with the control circuit and used for supplying power to the control circuit; the control circuit is connected with the air pump (4), and the control circuit comprises: the starting control circuit and the closing control circuit are respectively used for controlling the starting and the closing of the air pump (4); the touch screen (8) is connected with the control circuit, a start key, a close key and a display screen are arranged on the touch screen, the start key is connected with the start control circuit, the close key is connected with the close control circuit, when the start key is pressed, the start control circuit on the circuit control board (7) controls the air pump (4) to start, and when the close key is pressed, the close control circuit on the circuit control board (7) controls the air pump (4) to close; the display screen is used for displaying the working time of the air pump (4) from starting to closing or is used for setting the working time of the air pump (4) after starting so as to control the air pump (4) to be automatically closed.
4. The portable air sampler of claim 2, wherein the host further comprises: the handle (9) and the shell are integrally formed, so that the sampler is convenient to use and carry.
5. The portable air sampler of claim 1 wherein the end of the sampling head (10) connected to the collection tube (11) is of cylindrical configuration to facilitate its connection to the collection tube (11).
6. The portable air sampler of claim 5 wherein the sampling head air inlet (13) is arcuate and the air inlet passage is helical.
7. The portable air sampler as recited in claim 1, further comprising a handle (14) disposed on the sampling head (10), the handle (14) being disposed on the sampling head (10) as a hand-held operative end of the sampling head (10).
8. The portable air sampler of claim 1, wherein the host further comprises: the tripod connecting piece (3) is arranged at the bottom of the main machine and used for being connected with a tripod.
9. The portable air sampler as recited in claim 1, wherein the collection tube (11) is a transparent tube, and the main body is provided with a collection window for real-time observation of the sample liquid collected by the collection liquid in the collection tube (11).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010076687 | 2020-01-23 | ||
| CN202020146370 | 2020-01-23 | ||
| CN2020201463707 | 2020-01-23 | ||
| CN2020100766872 | 2020-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213022494U true CN213022494U (en) | 2021-04-20 |
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ID=73578776
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010228846.6A Pending CN112033762A (en) | 2020-01-23 | 2020-03-27 | Portable air sampler and sampling method thereof |
| CN202020416437.4U Active CN213022494U (en) | 2020-01-23 | 2020-03-27 | Portable air sampler |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010228846.6A Pending CN112033762A (en) | 2020-01-23 | 2020-03-27 | Portable air sampler and sampling method thereof |
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| CN (2) | CN112033762A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115508158B (en) * | 2022-11-02 | 2024-02-06 | 江苏华创检测技术服务有限公司科技研发中心 | Portable malodorous gas rapid sampler |
| CN116410851B (en) * | 2023-06-08 | 2023-09-08 | 至美时代生物智能科技(北京)有限公司 | Eddy current sampling device and sampling method |
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2020
- 2020-03-27 CN CN202010228846.6A patent/CN112033762A/en active Pending
- 2020-03-27 CN CN202020416437.4U patent/CN213022494U/en active Active
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| CN112033762A (en) | 2020-12-04 |
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