CN216899819U

CN216899819U - Portable air sampler

Info

Publication number: CN216899819U
Application number: CN202220383914.0U
Authority: CN
Inventors: 宋丹; 王维维; 陈弘昊
Original assignee: Dalian Boyuan Testing And Evaluation Center Co ltd
Current assignee: Dalian Boyuan Testing And Evaluation Center Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-07-05
Anticipated expiration: 2032-02-25

Abstract

The utility model discloses a portable air sampler, which relates to the technical field of air detection and comprises a sampling sleeve, wherein the front surface of the sampling sleeve is in threaded connection with a dustproof sleeve, the inner side wall of the dustproof sleeve is inserted with a filtering component, one end of the dustproof sleeve is communicated with an air inlet pipe, one side of the sampling sleeve is communicated with a sampling pipe, the inner side wall of the air inlet pipe is provided with an anti-reflux component, and one end of the sampling pipe is in threaded connection with a sampling bag; the anti-reflux assembly comprises a supporting shaft, a support is fixedly connected to the surface of the supporting shaft, a sealing plug is fixedly connected to one end of the supporting shaft, and a return spring is fixedly connected to the other end of the supporting shaft. This portable air sampler, filtering component peg graft in the dirt proof boot, and convenient dismantlement maintenance or change, filtering component's setting up makes inspiratory atmosphere can completely cut off bold debris and dust, separates the fungus through setting up the activated carbon layer at last and handles, improves the accuracy of measuring oxygen content numerical value.

Description

Portable air sampler

Technical Field

The utility model relates to the technical field of air detection, in particular to a portable air sampler.

Background

The air detection refers to the detection of the composition of air, and the detection of the atmosphere in the air detection is the detection of the oxygen content of the atmosphere in a certain area. In air detection, an air sampler is required to collect an air sample so as to detect the oxygen content of air contained in a certain area.

The air sampler on the existing market has the defect of inconvenient dust removal and bacterium isolation, and the phenomenon of serious deviation of measured values is easily caused in the process of measuring single oxygen content because the traditional air sampler easily sucks a large amount of foreign impurities and bacteria in the sampling process, so that the using effect of the air sampler is greatly reduced.

Disclosure of Invention

Solves the technical problem

In view of the deficiencies of the prior art, the present invention provides a portable air sampler which solves the problems set forth in the background art.

Technical scheme

In order to realize the purpose, the utility model is realized by the following technical scheme: a portable air sampler comprises a sampling sleeve, wherein the front surface of the sampling sleeve is in threaded connection with a dustproof sleeve, a filtering assembly is inserted into the inner side wall of the dustproof sleeve, one end of the dustproof sleeve is communicated with an air inlet pipe, one side of the sampling sleeve is communicated with a sampling pipe, an anti-reflux assembly is arranged on the inner side wall of the air inlet pipe, and one end of the sampling pipe is in threaded connection with a sampling bag; the anti-reflux assembly comprises a supporting shaft, a support is fixedly connected to the surface of the supporting shaft, a sealing plug is fixedly connected to one end of the supporting shaft, and a return spring is fixedly connected to the other end of the supporting shaft.

Optionally, internal thread section has been seted up to the inside wall of dirt proof boot, the external screw thread section with dirt proof boot looks adaptation is seted up to the one end on sampling sleeve surface, and internal thread section cooperation external screw thread section can make things convenient for personnel's dismouting dirt proof boot and sampling sleeve.

Optionally, the draw-in groove with filtering component looks adaptation is seted up to the both sides wall symmetry of dirt proof boot, filtering component includes first filter plate and second filter plate, the overlap joint has impurity to filter cotton board and activated carbon layer between first filter plate and the second filter plate, and activated carbon layer cooperation impurity filters cotton board and can realize the filtration to bacterium and impurity.

Optionally, the diameters of the first filter disc, the second filter disc, the impurity filtering cotton plate and the activated carbon layer are the same, the filter screen is embedded in the inner side wall of the first filter disc and the inner side wall of the second filter disc, the clamping blocks matched with the clamping grooves are fixedly connected to the two sides of the first filter disc and the two sides of the second filter disc, and the clamping blocks are matched with the clamping grooves to conveniently filter the filter assembly.

Optionally, a push rod is inserted into one side of the sampling sleeve, a piston is fixedly connected to one end of the push rod, the piston is slidably connected to one end of the sampling sleeve, a push handle is fixedly connected to the other end of the sampling sleeve, and the push rod is matched with the piston to facilitate extraction of airflow by personnel.

Optionally, the number of the supports is a plurality of, the supports are arranged on the surface of the supporting shaft in an annular array, and an airflow channel is formed between the two supports, so that the sealing is realized and the airflow circulation is ensured.

Optionally, the return spring is fixedly connected to the inner bottom wall of the air inlet pipe, and the sealing plug and the air inlet pipe form elastic fit through the return spring.

Optionally, the one end of sample bag is provided with the screwed joint with sampling tube looks adaptation, screwed joint's surface is provided with the control valve to conveniently gather the back at the air current and accomplish and seal the sample bag, avoid the air current to spill over and pollute.

Advantageous effects

The utility model provides a portable air sampler, which has the following beneficial effects:

this portable air sampler, through the sampling sleeve pipe, the dirt proof boot, the intake pipe, the sampling tube, prevent the adverse current subassembly, the setting of sample bag and filter assembly, filter assembly pegs graft in the dirt proof boot, convenient dismantlement maintenance or change, filter assembly's setting makes inspiratory atmosphere can completely cut off bold debris and dust, separate the fungus through setting up the activated carbon layer at last and handle, improve the accuracy of measuring oxygen content numerical value, through preventing the adverse current subassembly, the cooperation of intake pipe and sampling tube, can realize the sheathed tube of sampling and take a sample, it can draw different air samples to change the sample bag, the bag of taking a sample simultaneously makes things convenient for personnel to carry, and can realize self-closing, simultaneously conveniently discharge air sample.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the split structure of the present invention;

FIG. 3 is a schematic structural diagram of the anti-reflux assembly of the present invention;

FIG. 4 is a top cross-sectional view of the present invention;

FIG. 5 is a schematic structural diagram of a second embodiment of the present invention.

In the figure: 1-sampling sleeve, 2-dust-proof sleeve, 3-air inlet pipe, 4-sampling pipe, 5-sampling bag, 6-supporting shaft, 7-bracket, 8-sealing plug, 9-reset spring, 10-first filter disc, 11-second filter disc, 12-impurity filter cotton plate, 13-active carbon layer, 14-push rod, 15-piston and 16-control valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: a portable air sampler comprises a sampling sleeve 1, wherein the front side of the sampling sleeve 1 is in threaded connection with a dustproof sleeve 2, a filtering component is inserted into the inner side wall of the dustproof sleeve 2, one end of the dustproof sleeve 2 is communicated with an air inlet pipe 3, one side of the sampling sleeve 1 is communicated with a sampling pipe 4, the inner side wall of the air inlet pipe 3 is provided with an anti-backflow component, and one end of the sampling pipe 4 is in threaded connection with a sampling bag 5; the anti-reflux assembly comprises a support shaft 6, a support 7 is fixedly connected to the surface of the support shaft 6, a sealing plug 8 is fixedly connected to one end of the support shaft 6, and a return spring 9 is fixedly connected to the other end of the support shaft 6.

One side of the sampling sleeve 1 is inserted with a push rod 14, one end of the push rod 14 is fixedly connected with a piston 15, the piston 15 is connected to one end of the sampling sleeve 1 in a sliding manner, the other end of the sampling sleeve 1 is fixedly connected with a push handle, the push rod 14 is matched with the piston 15 to facilitate the extraction of air flow by personnel, the number of the supports 7 is multiple, the multiple supports 7 are arranged on the surface of the supporting shaft 6 in an annular array manner, an air flow channel is formed between the two supports 7, so that the circulation of air flow is ensured while sealing is realized, a reset spring 9 is fixedly connected to the inner bottom wall of the air inlet pipe 3, a sealing plug 8 is elastically matched with the air inlet pipe 3 through the reset spring 9, so that the air inlet pipe 3 is realized, the purpose of sampling by the sampling pipe 4 is realized, one end of the sampling bag 5 is provided with a threaded joint matched with the sampling pipe 4, the surface of the threaded joint is provided with a control valve 16, so that the sampling bag 5 is conveniently sealed after the air flow is collected, avoiding the overflow and pollution of air current, the inner side wall of the dustproof sleeve 2 is provided with an inner thread section, one end of the surface of the sampling sleeve 1 is provided with an outer thread section matched with the dustproof sleeve 2, the inner thread section is matched with the outer thread section to facilitate the disassembly and assembly of the dustproof sleeve 2 and the sampling sleeve 1 by personnel, the two side walls of the dustproof sleeve 2 are symmetrically provided with clamping grooves matched with a filtering component, the filtering component comprises a first filtering disc 10 and a second filtering disc 11, an impurity filtering cotton plate 12 and an activated carbon layer 13 are lapped between the first filtering disc 10 and the second filtering disc 11, the activated carbon layer 13 is matched with the impurity filtering cotton plate 12 to realize the filtration of bacteria and impurities, the diameters of the first filtering disc 10, the second filtering disc 11, the impurity filtering cotton plate 12 and the activated carbon layer 13 are the same, the inner side walls of the first filtering disc 10 and the second filtering disc 11 are both embedded with filtering nets, the two sides of the first filtering disc 10 and the second filtering disc 11 are both fixedly connected with clamping blocks matched with the clamping grooves, the fixture block is matched with the clamping groove to conveniently filter the filtering component.

In conclusion, when the portable air sampler is used, the sampler is cylindrical, has a simple structure and a small volume, and is convenient for people to carry and use, when a worker collects air, the worker connects the sampling bag 5 to the end of the sampling tube 4 by screw threads, opens the control valve 16 to communicate the sampling bag 5 with the control valve 16 and the sampling sleeve 1, pulls the push rod 14, the push rod 14 moves backwards to drive the sealing plug 8 in the air inlet tube 3 to stretch the return spring 9, opens the air inlet tube 3 to suck the outside air into the sampling sleeve 1, pushes the push rod 14 to move the piston 15, injects the sucked air into the sampling bag 5, during the injection process, the air pushes the sealing plug 8 to compress the return spring 9, so that the air inlet tube 3 is closed by the air flow, during the air flow entering the sampling sleeve 1, the air flow firstly passes through the filter assembly, and filters large-volume impurities in the dustproof sleeve 2 under the action of the first filter disc 10, then filter the air through impurity filtering cotton board 12, keep apart the bacterium in the air under the adsorption on activated carbon layer 13 afterwards, filter assembly's setting makes inspiratory atmosphere can completely cut off bold debris and dust, at last through setting up the activated carbon, 13 separate the fungus processing, improve the accuracy of measuring oxygen content numerical value, through preventing the adverse current subassembly, intake pipe 3 and sampling tube 4's cooperation, can realize the intake and the sample of sampling sleeve 1, change sampling bag 5 and can draw different air samples, sampling bag 5 makes things convenient for personnel to carry simultaneously, and can realize self-closing, simultaneously conveniently discharge air sample.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A portable air sampler comprising a sampling cannula (1), characterized in that: the sampling device is characterized in that the front side of the sampling sleeve (1) is in threaded connection with a dustproof sleeve (2), a filtering component is inserted into the inner side wall of the dustproof sleeve (2), one end of the dustproof sleeve (2) is communicated with an air inlet pipe (3), one side of the sampling sleeve (1) is communicated with a sampling pipe (4), the inner side wall of the air inlet pipe (3) is provided with an anti-backflow component, and one end of the sampling pipe (4) is in threaded connection with a sampling bag (5); the anti-reflux assembly comprises a supporting shaft (6), a support (7) is fixedly connected to the surface of the supporting shaft (6), a sealing plug (8) is fixedly connected to one end of the supporting shaft (6), and a reset spring (9) is fixedly connected to the other end of the supporting shaft (6).

2. A portable air sampler as claimed in claim 1 wherein: the inner thread section is seted up to the inside wall of dirt proof boot (2), the external thread section with dirt proof boot (2) looks adaptation is seted up to the one end on sampling sleeve (1) surface.

3. A portable air sampler as claimed in claim 2 wherein: draw-in grooves with filtering component looks adaptation are seted up to the both sides wall symmetry of dirt proof boot (2), filtering component includes first filter plate (10) and second filter plate (11), the overlap joint has impurity to filter cotton board (12) and activated carbon layer (13) between first filter plate (10) and second filter plate (11).

4. A portable air sampler as claimed in claim 3 wherein: the diameter of first filter plate (10), second filter plate (11), impurity filtering cotton board (12) and activated carbon layer (13) is the same, the inside wall of first filter plate (10) and second filter plate (11) all inlays and is equipped with the filter screen, the equal fixedly connected with in both sides of first filter plate (10) and second filter plate (11) and the fixture block of draw-in groove looks adaptation.

5. A portable air sampler as claimed in claim 2 wherein: one side of the sampling sleeve (1) is inserted with a push rod (14), one end of the push rod (14) is fixedly connected with a piston (15), the piston (15) is connected to one end of the sampling sleeve (1) in a sliding mode, and the other end of the sampling sleeve (1) is fixedly connected with a push handle.

6. A portable air sampler as claimed in claim 1 wherein: the number of the brackets (7) is a plurality, the brackets (7) are arranged on the surface of the supporting shaft (6) in an annular array, and an airflow channel is formed between the two brackets (7).

7. A portable air sampler as claimed in claim 1 wherein: reset spring (9) fixed connection is in the interior diapire of intake pipe (3), sealing plug (8) constitute elastic fit through reset spring (9) and intake pipe (3).

8. A portable air sampler as claimed in claim 1 wherein: the one end of sample bag (5) is provided with the screwed joint with sampling tube (4) looks adaptation, the surface of screwed joint is provided with control valve (16).