CN214894353U - Accurate dust sampling instrument - Google Patents
Accurate dust sampling instrument Download PDFInfo
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- CN214894353U CN214894353U CN202120412256.9U CN202120412256U CN214894353U CN 214894353 U CN214894353 U CN 214894353U CN 202120412256 U CN202120412256 U CN 202120412256U CN 214894353 U CN214894353 U CN 214894353U
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- air
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- flowmeter
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- 239000000428 dust Substances 0.000 title claims abstract description 86
- 238000005070 sampling Methods 0.000 title claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006806 disease prevention Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The utility model provides an accurate dust sampling instrument, which comprises a shell, wherein the side wall of the shell is provided with an air inlet and an air outlet, a detector is arranged between the air inlet and the air outlet, an air pump and a flowmeter are connected between the detector and the air outlet, and the flowmeter is arranged close to the air outlet; an opening valve and a buffer cavity are installed between the air inlet and the detector, and the buffer cavity is close to the detector. The utility model discloses enough through setting up flowmeter and aspiration pump, the volume of measurement pumped air that can be accurate, dust measuring result is accurate, reliable.
Description
Technical Field
The utility model relates to a dust content detects technical field in the air, concretely relates to accurate dust sampling instrument.
Background
The dust sampler is an appliance for collecting dust patterns in air containing dust, is widely applied to health monitoring and evaluation of departments such as disease prevention, environmental monitoring, labor protection, safety supervision, military, scientific research and teaching, metallurgy, petrochemical industry, railways, building materials and the like, and is specially used for measuring the average concentration of the dust in the air in the workplaces of production teams and groups. At present, the existing dust sampler weighs the dust filtered on a filter membrane, and then measures and calculates the whole dust content, but in the prior art, when the dust sampler detects air, the dust loss in the air is serious, which affects the vehicle precision of the dust sampler, and meanwhile, the dust sampler is easy to block by the dust in the air, which affects the service life of the dust sampler.
SUMMERY OF THE UTILITY MODEL
In view of this, the to-be-solved problem of the utility model is to provide an accurate dust sampling appearance, when improving its measurement accuracy, can also improve life.
In order to solve the technical problem, the utility model discloses a technical scheme is:
an accurate dust sampling instrument comprises a shell, wherein the side wall of the shell is provided with an air inlet and an air outlet, a detector is arranged between the air inlet and the air outlet, an opening valve and a buffer cavity are arranged between the air inlet and the detector, and the buffer cavity is arranged close to the detector;
an air pump and a flowmeter are connected between the detector and the air outlet, and the flowmeter is arranged close to the air outlet.
Further, the opening valve is a one-way valve.
Furthermore, a plurality of air inlets are arranged on the shell, and the opening pressure of the check valve corresponding to different air inlets is different.
Furthermore, the buffer cavity is of a hemispherical protruding structure and is arranged towards the top surface of the shell.
Furthermore, the detector is arranged on the bottom surface of the shell.
Further, the air pump is a variable pump.
Further, the flow meter is a positive displacement flow meter.
Further, a control panel is installed on the shell and electrically connected with a control chip, and the control chip is respectively and electrically connected with a detector, an air pump, a flow meter and an alarm;
the detector is used for detecting the content of dust in the air;
the air suction pump is used for providing power for sucking air;
the flow meter is used for detecting the flow of air;
the alarm is used for dust exceeding alarm.
Further, a display screen is installed on the control panel and used for displaying the dust content.
Furthermore, control button and button pilot lamp are installed to the control panel lower extreme, control button is used for sending signal to control chip, and control chip direct control detector, aspiration pump and flowmeter work.
The utility model has the advantages and positive effects that:
through setting up flowmeter and aspiration pump at the exit end of detector, make to wait to detect air admission dust sampling instrument after, directly carry out the detection of dustproof content through the detector, the air of avoiding waiting to detect passes through from flowmeter and aspiration pump, because the dust can produce the sediment in flowmeter and aspiration pump, the content of dust reduces in the air that makes to detect, can improve the testing result of dust sampling instrument, the while can also avoid having the air blockage flowmeter and the aspiration pump of dust, and then influence the life of dust sampling instrument.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of the internal structure of an accurate dust sampler of the present invention;
fig. 2 is a schematic structural diagram of a control panel of an accurate dust sampler of the present invention;
in the figure: 1. a housing; 2. an air inlet; 201. an air outlet; 3. opening the valve; 4. a buffer chamber; 5. an air pump; 6. a control chip; 7. a flow meter; 8. an alarm; 9. a control panel; 901. a display screen; 902. a control button; 903. an indicator light; 10. and (7) detecting the instrument.
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.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model provides an accurate dust sampling instrument, as shown in figure 1, including shell 1, air inlet 2 and gas outlet 201 are installed to 1 lateral wall of shell, install detector 10 between air inlet 2 and the gas outlet 201 for detect the content of dust in the air that awaits measuring, the air that awaits measuring gets into dust sampling instrument from air inlet 2, advances to detect the back through detector 10 to the content of dust in the air, is discharging from gas outlet 201. Detector 10 sets up in 1 bottom surfaces of shell, this structure makes detector 10 be located air inlet 2 below, be connected the setting with shell 1, accomplish the empty gas detection back when dust sampling appearance, conveniently take out detector 10 from 1 bottom of shell, accumulational dust in the clearance detector 10, and simultaneously, because the air that contains the dust is at the removal in-process, can produce certain deposit, install detector 10 in air inlet 2 below, when the circulation of air, can conveniently remove the dust that deposits, gravity through dust self, the dust can fall into detector 10 automatically, can improve the contact precision of dust sampling appearance.
An opening valve 3 and a buffer cavity 4 are installed between the air inlet 2 and the detector 10, the opening valve 3 is a one-way valve, when the difference between the internal air pressure and the external air pressure at the opening valve 3 reaches a certain strength, the opening valve 3 is opened, and the air flows into the dust sampling instrument. Install a plurality of air inlets 2 on the dust sampling appearance, and the check valve opening pressure that a plurality of air inlets 2 correspond is different, and when using, the pressure intensity of air inlet 2 department is different, and the air inlet 2 quantity of opening is also different.
The buffer chamber 4 is close to the detector 10, the buffer chamber 4 is used for buffering the air flowing into the detector 10, and the buffer chamber 4 can prevent the air which flows into the device and is not processed in time from flowing out of the air inlet, so that the working performance of the device is influenced. The air passes and flows in cushion chamber 4 behind opening valve 3, pressure produces the change, the dust that this process very easily made the air deposits, consequently, be hemisphere protruding structure with cushion chamber 4, and simultaneously, cushion chamber 4 sets up towards shell 1 top surface, there is not too much dog-ear in hemisphere protruding structure's cushion chamber 4, and hemisphere is protruding upwards concave, even make the dust deposit, also can not pile up in the cushion chamber, the dust of sediment can deposit in the pipeline of circulation of air, bring the detector 10 into with the dust of deposit in the pipeline through the air that flows, the accuracy of dust sampling appearance data has been guaranteed. Simultaneously, the buffer chamber 4 and the opening valve 3 are both arranged close to the air inlet 2, so that dust precipitated around the buffer chamber 4 can be conveniently cleaned.
An air pump 5 and a flow meter 7 are connected between the detector 10 and the air outlet 201, the air pump 5 is used for providing power for pumping air, the air pump 5 is a variable pump, and the number of the air inlets 2 which are opened is further controlled by changing the air pumping flow of the air pump 5. The flowmeter 7 is used for measuring the flow of air flowing through the sampler, the flowmeter 7 is a positive displacement flow detector, and a front straight pipe section and a rear straight pipe section are not needed at the installation position of the positive displacement flow detector, so that the installation position and the angle of the flowmeter 7 do not influence the precision of the flowmeter 7, and the size of the dust sampler can be effectively reduced; meanwhile, the volumetric flowmeter 7 has no influence on the metering precision when the flow velocity field is distorted, and the measuring precision of the flowmeter 7 cannot be influenced when the flow of the air suction pump 5 is randomly changed according to the own needs during use, so that the use flexibility of the dust sampling instrument is improved.
Flowmeter 7 is close to gas outlet 201 and sets up, and this structure can make and be connected between the export of aspiration pump 5 and detector 10, can avoid flowmeter 7 to produce the pressure drop, and then influences the working property of aspiration pump 5, can improve the work efficiency of dust sampling appearance simultaneously.
As shown in fig. 2, a control panel 9 is installed on the housing 1, a display screen 901 is installed on the control panel 9, the display screen 901 is used for displaying the dust content, and the displayed data includes the content of dust in the real-time air entering the device and the average dust content. The control panel is provided with a control button 902 and a button indicator light 903 at the lower end, wherein the button indicator light 903 is used for indicating whether the control button 902 is turned on or not, when the indicator light 903 is turned on, the control button 902 is turned on, otherwise, the control button 902 is not turned on.
Control panel 9 electricity is connected with control chip 6, and control button 902 is used for sending the signal to control chip 6, and control chip 6 electricity is connected with detector 10, aspiration pump 5, flowmeter 7 and alarm 8 respectively, and alarm 8 is used for the dust and exceeds standard and reports to the police, and when dust sampling appearance detected data and exceeded national regulation dust content, control chip 6 direct control alarm 8 reported to the police. The control button 902 can be turned on or off to input control signals to the control chip 6, the control chip 6 directly controls whether the detector 10 and the flowmeter 7 are turned on or not, meanwhile, the control chip 6 can also control the air suction pump 5 to be turned on or off and the working flow, and when the air suction pump 5 has different working flows, the air inlets 2 are turned on in different quantities.
The utility model discloses a theory of operation and working process as follows:
place the dust sampler in the environment that needs detected air dust content, testing personnel open control button 902, and the dust sampler begins work, and detector 10, aspiration pump 5, flowmeter 7 are all switched on, enter into operating condition, and testing personnel time simultaneously, and after dust sampler work settlement time, testing personnel closed control button 902, and display screen 901 can show the average dust value of detecting the air. If want to accomplish the detection fast, the measurement personnel increase the operating flow of aspiration pump 5 through control button 902, and then make a plurality of air inlets 2 simultaneous workings, and measurement personnel is when timing, the operating time of reduction dust sampling appearance that can be corresponding to accelerate detection speed.
When the dust sampler works, air enters the buffer cavity 4 from the air inlet 2, flows into the detector 10 from the buffer cavity 4, collects dust in the air by the detector 10, obtains the weight of the dust, obtains the content data of the dust in the air, and transmits the data to the display screen 901 through the control chip 6. After the air to be detected passes through the detector 10, the air does not contain dust, and the air without dust passes through the air suction pump 5, the flow meter 7 and the air outlet 201 in sequence and then is discharged out of the dust sampling instrument.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (10)
1. The accurate dust sampling instrument is characterized by comprising a shell (1), wherein an air inlet (2) and an air outlet (201) are installed on the side wall of the shell (1), a detector (10) is installed between the air inlet (2) and the air outlet (201), an opening valve (3) and a buffer cavity (4) are installed between the air inlet (2) and the detector (10), and the buffer cavity (4) is arranged close to the detector (10);
an air pump (5) and a flowmeter (7) are connected between the detector (10) and the air outlet (201), and the flowmeter (7) is arranged close to the air outlet (201).
2. An accurate dust sampler as claimed in claim 1, wherein: the opening valve (3) is a one-way valve.
3. An accurate dust sampler according to claim 2, wherein: a plurality of air inlets (2) are arranged on the shell (1), and the opening pressures of the check valves corresponding to different air inlets (2) are different.
4. An accurate dust sampler as claimed in claim 1, wherein: the buffer cavity (4) is of a hemispherical protruding structure, and the buffer cavity (4) is arranged towards the top surface of the shell (1).
5. An accurate dust sampler as claimed in claim 1, wherein: the detector (10) is arranged on the bottom surface of the shell (1).
6. An accurate dust sampler as claimed in claim 1, wherein: the air pump (5) is a variable pump.
7. An accurate dust sampler as claimed in claim 1, wherein: the flowmeter (7) is a positive displacement flow detector.
8. An accurate dust sampler as claimed in claim 1, wherein: a control panel (9) is installed on the shell (1), the control panel (9) is electrically connected with a control chip (6), and the control chip (6) is respectively and electrically connected with a detector (10), an air pump (5), a flowmeter (7) and an alarm (8);
the detector (10) is used for detecting the content of dust in the air;
the air suction pump (5) is used for providing power for extracting air;
the flow meter (7) is used for detecting the flow of air;
the alarm (8) is used for alarming when dust exceeds standard.
9. An accurate dust sampler as claimed in claim 8, wherein: the control panel (9) is provided with a display screen (901), and the display screen (901) is used for displaying the dust content.
10. An accurate dust sampler as claimed in claim 8, wherein: control button (902) and button pilot lamp (903) are installed to control panel (9) lower extreme, control button (902) are used for sending signal to control chip (6), and control chip (6) direct control detector (10), aspiration pump (5) and flowmeter (7) work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120412256.9U CN214894353U (en) | 2021-02-24 | 2021-02-24 | Accurate dust sampling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120412256.9U CN214894353U (en) | 2021-02-24 | 2021-02-24 | Accurate dust sampling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214894353U true CN214894353U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120412256.9U Expired - Fee Related CN214894353U (en) | 2021-02-24 | 2021-02-24 | Accurate dust sampling instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN214894353U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414449A (en) * | 2022-01-25 | 2022-04-29 | 四川大学 | Novel intelligent occupational health real-time detection device |
| CN114484695A (en) * | 2022-01-21 | 2022-05-13 | 杭州人安检测科技有限公司 | Chemical plant dust detection equipment |
-
2021
- 2021-02-24 CN CN202120412256.9U patent/CN214894353U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114484695A (en) * | 2022-01-21 | 2022-05-13 | 杭州人安检测科技有限公司 | Chemical plant dust detection equipment |
| CN114414449A (en) * | 2022-01-25 | 2022-04-29 | 四川大学 | Novel intelligent occupational health real-time detection device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |