Atmosphere sampling device

Abstract

The utility model discloses an atmosphere sampling device, which comprises an equipment shell, an aerosol collecting port, an air inlet, an air outlet and an air outlet, the bottom end of the equipment shell is provided with a connecting flange, the front surface of the equipment shell is provided with a control panel, the aerosol collecting port is arranged on the side surface of the equipment shell, and the rear end of the aerosol collecting port is sequentially connected with a thermal flow meter and a direct current fan; the two U-shaped porous absorption bottles are installed at the top end of the equipment shell in an embedded mode, and each U-shaped porous absorption bottle is provided with an inlet end and an outlet end; the two sets of anti-suck-back drying bottles are installed in the middle of the top end of the equipment shell in an embedded mode, and the outlet ends are connected with the anti-suck-back drying bottles in a penetrating mode; and the diaphragm pump is installed relative to the suck-back prevention drying bottle, flow meters are symmetrically arranged on the two sides of the diaphragm pump, and the flow meters are connected with the suck-back prevention drying bottle in a penetrating mode. According to the atmospheric sampling device, the problem of collecting latest data in real time in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to atmospheric sampling equipment technical field, concretely is atmospheric sampling device. BACKGROUND

[0002] Atmospheric aerosol refers to the total name of solid and liquid particles suspended in the atmosphere; can directly or indirectly affect atmospheric radiation balance and climate, can also cause air quality decline and visibility reduction, because the small particles in the aerosol are easy to be inhaled into the human body, and may also carry other harmful substances, such as fluoride is a high-toxicity substance, enters the human body through the respiratory tract, can cause mucous membrane irritation and poisoning and other symptoms, and can affect the normal physiological function of various tissues and organs, so real-time collection and detection of aerosol particles are crucial.

[0003] In the prior art, the sampling device of atmospheric aerosol and the sampling device of atmospheric fluoride are single whole, lack of integrated device, so that the operator is difficult to collect the latest data of atmospheric aerosol and atmospheric fluoride at the same time in a short time. UTILITY MODEL CONTENT

[0004] One object of the utility model is to solve at least the above problems and / or defects, and provide at least the advantages to be explained later.

[0005] In order to achieve these objects and other advantages according to the utility model, an atmospheric sampling device is provided, comprising, equipment shell, the bottom end is provided with connecting flange, the front of the equipment shell is provided with control panel, further comprising:

[0006] Aerosol collection port is arranged on the side of the equipment shell, and the rear end of the aerosol collection port is connected with a thermal flowmeter and a DC fan in sequence;

[0007] U-shaped porous absorption bottle, two groups of embedded installation are arranged on the top of the equipment shell, and the U-shaped porous absorption bottle is provided with an inlet end and an outlet end;

[0008] Anti-suck drying bottle, two groups of embedded installation are arranged in the middle of the top of the equipment shell, and the anti-suck drying bottle is provided with a short pipe and a long pipe, and the outlet end is connected with the long pipe of the anti-suck drying bottle in sequence;

[0009] The diaphragm pump is installed relative to the anti-suck drying bottle and closely attached to the inner wall of the equipment shell, and the flowmeter is symmetrically arranged on both sides of the diaphragm pump, the flowmeter is connected with the short pipe of the anti-suck drying bottle in sequence, and the air inlet hole of the diaphragm pump is communicated with the flowmeter;

[0010] The sound absorption cavity is installed on the inner wall of the equipment shell opposite to the DC fan.

[0011] Preferably, the bottom end of the device shell is provided with a fan plate, and the device shell is provided with a fan relative to the inner wall of the U-shaped porous absorption bottle.

[0012] Preferably, the U-shaped porous absorption bottle protruding from the part of the device shell is provided with a protective shell.

[0013] Preferably, the top end of the device shell is provided with an arc-shaped hand handle.

[0014] The utility model at least includes following beneficial effects:

[0015] The device meets the functions of atmospheric aerosol sampling and atmospheric fluorine sampling, realizes the instantaneous flow, cumulative flow, sampling start time, sampling remaining time, air temperature and air pressure of sampling through the closed loop working area composed of a heat type flowmeter, a direct current fan and a direct current fan control board;

[0016] The sampling instantaneous flow, air temperature and air pressure parameters can provide a monitoring curve, two of the sampling time, sampling flow and cumulative flow can be set and the third data can be automatically calculated; the built-in sampling information database and simple sampling task setting function can automatically generate a sampling original record meeting the management requirements; the built-in equipment metering information management function is provided.

[0017] Other advantages, objects and features of the utility model will be embodied in part through the following description, and will be understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the cross-sectional structure schematic drawing of the utility model;

[0019] Figure 2 It is the overall structure schematic drawing of the utility model;

[0020] Figure 3 It is the air fluorine pipeline flow direction schematic drawing of the utility model;

[0021] Figure 4 It is the anti-inversion drying bottle cross-sectional structure schematic drawing of the utility model;

[0022] Figure 5 It is the simulation schematic drawing of the internal heat convection of the axial flow fan cavity of the utility model. DETAILED DESCRIPTION

[0023] The utility model will be further explained in detail in combination with the drawings, so that those skilled in the art can implement according to the description.

[0024] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0025] It should be noted that in the description of the utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "mount", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, or can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] In addition, in the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] The utility model will be described in detail below in combination with the drawings:

[0029] Figures 1-5 A kind of atmospheric sampling device of the utility model is shown, including, equipment shell 1, its bottom end is provided with connecting flange 10, the front of the equipment shell 1 is provided with control panel 2, still include:

[0030] Aerosol collection port 3 is arranged in the side of the equipment shell 1, the rear end of the aerosol collection port 3 is sequentially connected with hot flowmeter 31 and DC fan 32;

[0031] U-shaped porous absorption bottle 4 has two groups of embeddedly installed in the top of the equipment shell 1, import end 41, export end 42 are provided on the U-shaped porous absorption bottle 4;

[0032] Anti-suction drying bottle 5, which has two groups of embeddedly installed in the middle of the top end of the device shell 1, is provided with a short tube 51 and a long tube 52, and the outlet end 42 is connected with the long tube 52 of the anti-suction drying bottle 5;

[0033] The diaphragm pump 6 is installed relative to the anti-suction drying bottle 5 and closely abuts the inner wall of the device shell 1, and the flow meter 7 is symmetrically arranged on both sides of the diaphragm pump 6, the flow meter 7 is connected with the short tube 51 of the anti-suction drying bottle 5, and the air inlet hole of the diaphragm pump 6 is communicated with the flow meter 7;

[0034] The sound absorption cavity 9 is installed on the inner wall of the device shell 1 opposite to the straight-flow fan 32.

[0035] Working principle:

[0036] Through the connection of all parts in the device and the power supply through the wire, and according to the actual situation, the appropriate controller should be selected to meet the control requirements, the detailed connection means is disclosed in the art, and this paper does not elaborate too much;

[0037] First, the device shell 1 is fixed on the tripod through the connecting flange 10, and then the external power supply is connected to the triangle socket 11 on the device shell 1, so that the device is powered on and starts to work, and the operator inputs the aerosol collection flow, air collection flow, sampling time / sampling volume in the display of the control panel 2, and clicks to start sampling;

[0038] At this time, when the straight-flow fan 32 is turned on, the aerosol in the atmosphere enters the thermal flow meter 31 through the aerosol collection port 3 (when the aerosol passes through the built-in heating element, the flow of the aerosol will cause the heat loss of the heating element, so as to calculate the flow of the aerosol by measuring the temperature change of the heating element), and the speed of the straight-flow fan 32 is adjusted, mainly to adjust the air volume entering the aerosol collection port 3, and the specific speed of the straight-flow fan 32 in actual use can be determined by the straight-flow fan control panel 33, and the gas sucked in the device is discharged by the sound absorption cavity 9;

[0039] Because the air inlet hole of the diaphragm pump 6 is connected with the flow meter, and then the operator connects the air outlet hole of the flow meter 7 with the short tube 51 of the anti-suction drying bottle 5 through the external pipeline, and then connects the long tube 52 of the anti-suction drying bottle 5 with the outlet end 42 of the U-shaped multi-hole absorption bottle 4, so that the diaphragm pump 6, the flow meter 7, the anti-suction drying bottle 5 and the U-shaped multi-hole absorption bottle 4 form a closed cycle whole which can be unidirectionally passed through;

[0040] At the same time of aerosol sampling, the diaphragm pump 6 starts vacuum pumping, and negative pressure is formed in the one-way pipe. Since the air inlet of the diaphragm pump 6 is communicated with the flowmeter 7, the pressure difference formed in the pipe will suck the external air into the inlet end 41 of the U-shaped porous absorption bottle 4, and then the air will be transported to the anti-backflow drying bottle 5 through the outlet end 42 and the long pipe 52, and then the air will be transported to the flowmeter 7 through the short pipe 51, so that the fluorides in the atmosphere are sampled, and the pumped air is discharged into the device by the diaphragm pump 6, and then the air is discharged through the sound absorption cavity 9;

[0041] The U-shaped porous absorption bottle 4 stores NaOH solution for dissolving fluorides in the air (the sampling gas in the atmosphere reacts with the solution in the U-shaped porous absorption bottle 4, and the reaction product is stored in the U-shaped porous absorption bottle 4);

[0042] The drying agent stored in the anti-backflow drying bottle 5 and the design of the long pipe 52 and the short pipe 51 effectively prevent the NaOH solution stored in the U-shaped porous absorption bottle 4 from being sucked back. In actual use, an NPN liquid level sensor 43 is additionally arranged on the U-shaped porous absorption bottle 4 (to provide liquid level alarm of the U-shaped porous absorption bottle 4);

[0043] The USB socket 11 and the network socket 12 are further arranged on the device shell 1, so that the working parameters of the sampling device can be copied to a U disk, and the operator can extract data through a computer terminal;

[0044] The device comprises a complete working area composed of the thermal flowmeter 31, the DC fan 32, the DC fan control panel 33 and the sound absorption cavity 9, and a structure composed of the diaphragm pump 6, the flowmeter 7, the anti-backflow drying bottle 5 and the U-shaped porous absorption bottle 4, so that the simultaneous sampling of atmospheric aerosols and fluorides is realized, and the control of the gas flow is ensured.

[0045] As in the above scheme, the device shell 1 is provided with a wind plate 13 at the bottom end, and the device shell 1 is provided with a fan 8 relative to the inner wall of the U-shaped porous absorption bottle 4.

[0046] Working principle:

[0047] Because the DC fan 32 is rubbed and collided with air for a long time, and a large amount of heat will be generated during the high-speed operation of the DC fan 32, if the heat is not removed, the device will be continuously heated, and the operator may be finally scalded;

[0048] A fan 8 is additionally arranged on the inner wall of the device shell 1 as a cooling fan, the inside of the cavity of the device is cooled by the fan 8, the heat of the DC fan 32 is left in the bottom, and the air is sucked from the bottom and discharged from the side by the cooperation of the wind plate 13, the fan 8 and the sound absorption cavity 9, so that continuous cooling is realized, and the local temperature is prevented from being too high. The specific heat convection simulation diagram is shown in Figure 5 .

[0049] As in the above scheme, the U-shaped porous absorption bottle 4 protrudes from the part of the equipment shell 1, and is provided with a protective shell 14. In the transportation process, if the U-shaped porous absorption bottle 4 is broken, the protective shell 14 is designed in an embedded manner, so that even if leakage occurs, it will not cause harm to people.

[0050] As in the above scheme, the top end of the equipment shell 1 is provided with an arc-shaped hand handle 15, which is designed in accordance with ergonomics and feels comfortable to hold, and is convenient for the operator to take the device.

[0051] Although the embodiments of the present application have been disclosed as above, they are not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein.

Claims

1. An atmospheric sampling device, The utility model relates to a device shell which is provided with a connecting flange at the bottom end, and is provided with a control panel on the front side, characterized in that Further comprising: An aerosol collection port is arranged on the side of the device shell, and a thermal flow meter and a DC fan are sequentially connected to the rear end of the aerosol collection port; A U-shaped porous absorption bottle is embeddedly arranged on the top end of the device shell in two groups, and is provided with an inlet end and an outlet end; An anti-suckback drying bottle is embeddedly arranged on the middle part of the top end of the device shell in two groups, and is provided with a short pipe and a long pipe, and the outlet end is connected to the long pipe of the anti-suckback drying bottle; A diaphragm pump is arranged relative to the anti-suckback drying bottle and closely adheres to the inner wall of the device shell, and flow meters are symmetrically arranged on both sides of the diaphragm pump, the flow meters are connected to the short pipe of the anti-suckback drying bottle, and the air inlet hole of the diaphragm pump is communicated with the flow meters; An acoustic cavity is arranged on the inner wall of the device shell opposite to the DC fan.

2. The atmospheric sampling device of claim 1, wherein, The bottom end of the device shell is provided with a wind plate, and the device shell is provided with a fan relative to the inner wall of the U-shaped porous absorption bottle.

3. The atmospheric sampling device of claim 1, wherein, The part of the U-shaped porous absorption bottle protruding from the device shell is provided with a protective shell.

4. The atmospheric sampling device of claim 1, wherein, The top end of the device shell is provided with an arc-shaped hand handle.

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