CN213456315U - Gas sampling device for multi-component portable detection - Google Patents

Abstract

The utility model discloses a gaseous sampling device is used in portable detection of multicomponent relates to the field, including the device main part, the surface of device main part is provided with the dodge gate, and the both sides of device main part are provided with portable area, and the air pump is installed to the inside top of device main part, and the suction end of air pump is connected with the breathing pipe, and the top of breathing pipe is provided with the shield. The utility model discloses a set up the shield, the installation piece, first filter screen, adsorb cotton piece and second filter screen, when the gas sample is taken to the user, movable door and shield are opened to the user, the shield can prevent that the dust from getting into in the inspiratory tube when the device is out of work, open the sealed lid of sampling pipe, with the leading-in sampling pipe of outlet duct, start the air pump, aim at the gas that needs the detection with the breathing pipe, the air pump extraction is gaseous, pass through first filter screen in proper order at gaseous through the breathing pipe, adsorb cotton piece and second filter screen, first filter screen and second filter screen filter the granule dust that gas contains, adsorb cotton piece and adsorb some micromolecule dust.

Description

Gas sampling device for multi-component portable detection

Technical Field

The utility model relates to a gaseous sampling field specifically is gaseous sampling device is used in multicomponent portable detection.

Background

A process for collecting a sample of a contaminant or contaminated air in an atmosphere. There are two types of collection methods: one is to make a large amount of air pass through a liquid absorbent or a solid adsorbent to enrich pollutants with low concentration in the atmosphere, such as an air extraction method and a filter membrane method. Another type is to collect the air containing the contaminants with containers (glass bottles, plastic bags, etc.). The former measures the average concentration of the pollutants in the atmosphere within the sampling time; the latter measured instantaneous concentrations or average concentrations over a short period of time. The sampling mode is determined according to the purpose of sampling and the field situation. The sample should be representative. The sampling efficiency is high, the operation is simple and convenient, and the subsequent analysis and measurement are convenient to obtain reliable basic data of gas pollution.

Current gas sampling device, owing to use the aspiration pump to extract gas mostly when gathering gas, the aspiration pump can inhale the sampling pipe together with gaseous adnexed dust, on the one hand for gaseous purity reduces, and on the other hand, the dust can block up the breathing pipe after piling up for a long time, leads to the device can not normal use, and in addition, the heat preservation effect of device is not good, and some gas density under different temperatures also can change, leads to detecting gaseous data emergence error.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that dust can block an air suction pipe and the heat preservation effect of the device is poor, a multi-component portable gas sampling device for detection is provided.

In order to achieve the above object, the utility model provides a following technical scheme: the multi-component portable gas sampling device for detection comprises a device main body, wherein a movable door is arranged on the outer surface of the device main body, the two sides of the device main body are provided with hand straps, an air pump is arranged above the inside of the device main body, the air suction end of the air pump is connected with an air suction pipe, the top of the air suction pipe is provided with a dustproof cover, two sides inside the air suction pipe are provided with mounting blocks, a first filter screen, an adsorption cotton sheet and a second filter screen are sequentially arranged between the two mounting blocks from top to bottom, the air outlet end of the air pump is connected with an air outlet pipe, the inner wall of the device main body is provided with two metal wall plates, a vacuum layer is arranged between the two metal wall plates, one side of one metal wall plate is connected with a copper foil plate, a fixing frame is fixed in the middle of the inside of the device main body, a sampling pipe is arranged on the outer surface of the fixing frame, and a sealing cover is arranged at the top of the sampling pipe.

Preferably, the first filter screen, the adsorption cotton piece and the second filter screen are parallel to each other, and the aperture of the first filter screen is larger than that of the second filter screen.

Preferably, the number of the sampling pipes is four, and the four sampling pipes are arranged at equal intervals.

Preferably, the dodge gate rotates through hinge and device main part to be connected, the portable area adopts the nylon material preparation to form.

Preferably, the copper foil plate is in close contact with the metal wall plate, and the air outlet pipe is a hose.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the shield, the installation piece, first filter screen, adsorb cotton piece and second filter screen, when the gas sample is taken to the user's use device, the user opens dodge gate and shield, the shield can prevent that the dust from getting into in the breathing pipe when the device is out of work, open the sealed lid of sampling pipe, introduce the outlet duct into sampling pipe, start the air pump, aim at the breathing pipe at the gas that needs to detect, the air pump extracts gas, gas passes through first filter screen, adsorb cotton piece and second filter screen in proper order through the breathing pipe, first filter screen and second filter screen filter the granule dust that gas contains, adsorb some small molecule dusts, the purity of gas has been improved and the dust has been avoided too high to block up the breathing pipe, gas passes through the air pump and discharges to the sampling pipe from the outlet duct;

2. the utility model discloses a set up metal wallboard, vacuum layer and copper foil board, after gaseous whole gathers, the user closes the dodge gate, two metal wallboards form double-deck structure, middle level vacuum layer can stop device inside heating power transmission and convection current effectively, and the copper foil board makes it produce specular reflection, walks the radiation reflection to make the temperature in the device main part keep unchangeable, avoided the temperature to rise effectively or reduce and produced the influence to the device internal gas, improved the accurate rate of gaseous data detection.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the main body of the device of the present invention;

FIG. 3 is an enlarged schematic view of the structure at the position A of the present invention;

fig. 4 is an enlarged schematic structural diagram of the position B of the present invention.

In the figure: 1. a device main body; 2. a movable door; 3. a hand strap; 4. an air intake duct; 5. a dust cover; 6. a sampling tube; 7. a sealing cover; 8. an air outlet pipe; 9. an air pump; 10. a metal wall plate; 11. a vacuum layer; 12. a copper foil plate; 13. mounting blocks; 14. a first filter screen; 15. adsorbing the cotton sheets; 16. a second filter screen; 17. a fixing frame.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "disposed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention according to its overall structure.

Referring to fig. 1-4, the multi-component portable gas sampling device for detection includes a device body 1, a movable door 2, a hand strap 3, an air suction pipe 4, a dust cap 5, a sampling pipe 6, a sealing cap 7, an air outlet pipe 8, an air pump 9, a metal wall plate 10, a vacuum layer 11, a copper foil plate 12, a mounting block 13, a first filter screen 14, an adsorption cotton sheet 15, a second filter screen 16 and a fixing frame 17; the surface of device main part 1 is provided with dodge gate 2, the both sides of device main part 1 are provided with hand-strap 3, air pump 9 is installed to the inside top of device main part 1, the end of breathing in of air pump 9 is connected with breathing pipe 4, the top of breathing pipe 4 is provided with shield 5, the inside both sides of breathing pipe 4 are provided with installation piece 13, from last first filter screen 14 that has set gradually down between two installation pieces 13, adsorb cotton piece 15 and second filter screen 16, the end of giving vent to anger of air pump 9 is connected with outlet duct 8, the inner wall of device main part 1 is provided with two metal wallboards 10, be provided with vacuum layer 11 between two metal wallboards 10, one side of a metal wallboard 10 is connected with copper foil board 12, be fixed with mount 17 in the middle of the inside of device main part 1, the surface of mount 17 is provided with sampling.

Please refer to fig. 2 and 4, the first filter screen 14, the adsorption cotton sheet 15 and the second filter screen 16 are parallel to each other, the aperture of the first filter screen 14 is larger than that of the second filter screen 16, the first filter screen 14 and the second filter screen 16 filter the particle dust contained in the gas, the adsorption cotton sheet 15 adsorbs some small molecule dust, four sampling tubes 6 are arranged, and the four sampling tubes 6 are arranged at equal intervals, so as to collect different gases.

Referring to fig. 1-3, the movable door 2 is rotatably connected to the main body 1 by a hinge, the hand strap 3 is made of nylon, the nylon is wear-resistant and durable, the copper foil 12 is in close contact with the metal wall 10, the air outlet pipe 8 is a hose, and the copper foil 12 causes the copper foil to generate mirror reflection to reflect radiation away, so that the temperature in the main body 1 is kept constant.

The working principle is as follows: firstly, when the device body 1 is used for taking a gas sample, a user opens the movable door 2 and the dust cover 5, when the device body 1 does not work, the dust cover 5 can prevent dust from entering the air suction pipe 4, the user opens the sealing cover 7 of the sampling pipe 6 again, the air outlet pipe 8 is led into the sampling pipe 6, the air pump 9 is started, the air suction pipe 4 is aligned to the gas to be detected, the air pump 9 pumps the gas, the gas passes through the air suction pipe 4 and sequentially passes through the first filter screen 14, the adsorption cotton sheet 15 and the second filter screen 16, the first filter screen 14 and the second filter screen 16 filter the particle dust contained in the gas, the adsorption cotton sheet 15 adsorbs some small molecular dust, the gas is discharged into the sampling pipe 6 from the air outlet pipe 8 through the air pump 9, after the gas is completely collected, the user closes the movable door 2, the two metal wall plates 10 form a double-layer structure, the middle vacuum layer 11 can effectively prevent the, the copper foil plate 12 causes the mirror reflection to reflect the radiation away, so that the temperature in the device main body 1 is kept unchanged, and the influence of the temperature rise or decrease on the gas in the device is effectively avoided.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. Gas sampling device is used in portable detection of multicomponent, including device main part (1), its characterized in that: the device is characterized in that a movable door (2) is arranged on the outer surface of the device main body (1), hand-held belts (3) are arranged on two sides of the device main body (1), an air pump (9) is installed above the inside of the device main body (1), an air suction end of the air pump (9) is connected with an air suction pipe (4), a dust cover (5) is arranged at the top of the air suction pipe (4), installation blocks (13) are arranged on two sides of the inside of the air suction pipe (4), a first filter screen (14), an adsorption cotton sheet (15) and a second filter screen (16) are sequentially arranged between the two installation blocks (13) from top to bottom, an air outlet end of the air pump (9) is connected with an air outlet pipe (8), two metal wall plates (10) are arranged on the inner wall of the device main body (1), a vacuum layer (11) is arranged between the two metal wall plates (10), one, a fixing frame (17) is fixed in the middle of the inside of the device main body (1), a sampling pipe (6) is arranged on the outer surface of the fixing frame (17), and a sealing cover (7) is arranged at the top of the sampling pipe (6).

2. The gas sampling device for multicomponent portable detection as recited in claim 1, wherein: the first filter screen (14), the adsorption cotton sheet (15) and the second filter screen (16) are parallel to each other, and the aperture of the first filter screen (14) is larger than that of the second filter screen (16).

3. The gas sampling device for multicomponent portable detection as recited in claim 1, wherein: the sampling pipes (6) are four in number, and the four sampling pipes (6) are arranged at equal intervals.

4. The gas sampling device for multicomponent portable detection as recited in claim 1, wherein: the movable door (2) is rotatably connected with the device main body (1) through a hinge, and the hand strap (3) is made of a nylon material.

5. The gas sampling device for multicomponent portable detection as recited in claim 1, wherein: the copper foil plate (12) is in close contact with the metal wall plate (10), and the air outlet pipe (8) is a hose.

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