CN211347590U

CN211347590U - Soil gas sampling device

Info

Publication number: CN211347590U
Application number: CN201922078935.2U
Authority: CN
Inventors: 李铁; 沈佳琪
Original assignee: Zhongxin Suzhou Industrial Park Tsingcheng Environment Development Co ltd
Current assignee: Zhongxin Suzhou Industrial Park Tsingcheng Environment Development Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-25
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses a soil gas sampling device, which is used for sampling soil gas of soil drilled with deep holes, and comprises a cover plate for covering the deep holes and a sampling bottle connected with the cover plate through a connecting wire, wherein an organic matter adsorption material is arranged in the sampling bottle, and a bottle cap of the sampling bottle is provided with a breathable filter membrane; threaded connection has the sleeve pipe that is used for inserting in the deep hole on the apron, the one end that the sleeve pipe inserted in the deep hole is the open end, the other end is the blind end, the intraductal sponge that is equipped with of cover, and the sponge has the trend of outside inflation, be equipped with the push-and-pull rod that is used for driving the sponge motion on the sleeve pipe, the push-and-pull rod inserts the sleeve pipe from sheathed tube blind end and is connected with the sponge, the sponge can get into in the deep hole through sheathed tube open end under the drive of push-and-pull rod, and outside inflation is closely offset with the deep hole. The utility model discloses sampling easy operation, labour saving and time saving, efficiency is higher.

Description

Soil gas sampling device

Technical Field

The utility model relates to a soil gas sampling device.

Background

Soil gas is one of the important components of soil, and the air permeability and the pollution degree of the soil can be known by detecting the soil gas. In the prior art, a soil gas monitoring well is usually constructed for sampling soil gas before detection, the well construction process comprises filling, well pipe, sieve mesh, well cover sampling systems and the like are installed, the time consumption is long, the manpower and material resource investment is large, the well construction cost is high, the airtightness is guaranteed and the periodical airtightness is checked, the steps are complicated, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a soil gas sampling device, aim at solving among the prior art soil gas sample and waste time and energy, the technical problem of inefficiency.

The technical scheme of the utility model is that: a soil gas sampling device is used for sampling soil gas of soil drilled with deep holes and comprises a cover plate used for covering the deep holes and a sampling bottle connected with the cover plate through a connecting line, an organic matter adsorption material is filled in the sampling bottle, a gas permeable filter membrane is arranged on a bottle cap of the sampling bottle, and gas can enter the sampling bottle through the gas permeable filter membrane and is gathered on the organic matter adsorption material; the sampling device comprises a cover plate and a sponge, and is characterized in that a sleeve pipe inserted into the deep hole is connected to the cover plate in a threaded manner, one end of the sleeve pipe inserted into the deep hole is an open end, the other end of the sleeve pipe inserted into the deep hole is a closed end, the sleeve pipe is internally provided with the sponge, the sponge tends to expand outwards, a push-pull rod used for driving the sponge to move is arranged on the sleeve pipe, the push-pull rod is inserted into the sleeve pipe from the closed end of the sleeve pipe and is connected with the sponge, the sponge can enter the deep hole through the open end of the sleeve pipe under the driving of the push-pull rod and expands.

Further, the utility model discloses in be equipped with the reference column on the apron, the both ends of connecting wire are connected with holding ring and spring fixing ware respectively, the sample bottle is installed in the spring fixing ware, thereby the holding ring can overlap realize the fixed of sample bottle on the reference column.

Furthermore, in the present invention, the push-pull rod passes through the sponge and is fixed to the sponge.

Furthermore, in the present invention, the two ends of the push-pull rod, which are located at the sponge, are respectively provided with an upper baffle and a lower baffle for fixing the sponge.

Further, the utility model discloses in the intraductal being equipped with of cover is right the motion of overhead gage plays the guide way of guide effect, overhead gage slidable ground sets up in the guide way.

Furthermore, in the present invention, the end of the push-pull rod outside the sleeve is provided with a limit portion for limiting the movement stroke of the sponge.

Furthermore, in the present invention, the limiting portion is a rod-shaped structure or a plate-shaped structure.

Furthermore, in the utility model, the open end of the sleeve is trumpet-shaped.

Furthermore, in the utility model, the ventilation filter membrane is a polydimethylsiloxane membrane.

Compared with the prior art, the utility model has the following advantage:

1) when the utility model is used for sampling soil gas, only a deep hole needs to be drilled in the soil in advance, the sampling bottle is put into the deep hole, VOC can be diffused into the sampling bottle through the polydimethylsiloxane film on the bottle cap and gathered on the organic matter adsorption material, after sampling is completed, the quality of adsorbed organic matter is detected through GC-MS, and the concentration of the organic matter in the soil is calculated through the absorption speed; the sampling bottle is utilized for sampling without building a soil gas monitoring well, without air tightness inspection, and without vacuum pump sampling, the sampling operation is simple, time and labor are saved, and the efficiency is higher.

2) The utility model discloses in, the sample bottle can directly be invertd in the spring fixing base, then put into the deep hole through the connecting wire and take a sample, and getting of sample bottle is put simply, easily operation.

3) The utility model discloses in, the apron of specific design not only can cover the deep hole, avoids gaseous leakage, still plays the effect of fixed sampling bottle, only need with the holding ring cover of connecting wire one end can on the reference column of apron.

4) The utility model discloses in, in order to inject the sample range of sampling bottle in certain space, guarantee the accuracy of sample data, separate the space in the deep hole through the sponge, the high accessible rotary sleeve of sponge is adjusted, then recycle the push-and-pull rod on the sleeve pipe release the sponge to the deep hole in be located the sampling bottle the top position can, easy operation.

5) The utility model discloses in, sheathed tube open end is loudspeaker form, does benefit to the sponge that the guide is expanded and compresses back in the sleeve again.

6) The utility model discloses in, two baffles of design are used for fixing a position the position of sponge on the push-and-pull rod, and the motion of sponge can be guided better to the guide way of the interior specific design of cooperation cover pipe.

7) The utility model discloses in, the spacing portion of specific design is used for restricting the motion stroke of sponge on the push-and-pull rod, avoids the sponge can't return in the cover pipe again.

Drawings

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

FIG. 2 is a schematic view of the working state of the present invention;

fig. 3 is a schematic structural view of the sampling bottle of the present invention.

Wherein: 1. a cover plate; 1a, a positioning column; 2. a connecting wire; 2a, a positioning ring; 2b, a spring fixer; 3. sampling a bottle; 4. an organic matter adsorbing material; 5. a gas-permeable filter membrane; 6. a sleeve; 6a, an open end; 6b, a closed end; 7. a sponge; 8. a push-pull rod; 8a, an upper baffle plate; 8b, a lower baffle plate; 8c, a limiting part;

Detailed Description

The following description will specifically explain embodiments of the present invention with reference to the accompanying drawings.

Example (b):

combine the attached drawing to show the utility model relates to a soil gas sampling device's embodiment, the device is used for carrying out soil gas sample to the soil that bores the deep hole, and it is main including the apron 1 that is used for covering the deep hole, through connecting wire 2 and the sampling bottle 3 of lapping 1 being connected, is equipped with organic matter adsorption material 4 in the sampling bottle 3, is equipped with ventilation filter 5 on the bottle lid of sampling bottle 3, and gas can get into in the sampling bottle 3 and gather on organic matter adsorption material 4 through ventilation filter 5. The permeable filter membrane 5 is a polydimethylsiloxane membrane.

Be equipped with reference column 1a on the apron 1, the both ends of connecting wire 2 are connected with holding ring 2a and spring holder 2b respectively, and sample bottle 3 installs in spring holder 2b, thereby holding ring 2a can overlap and realize sample bottle 3's fixed on reference column 1 a.

The cover plate 1 is connected with a sleeve 6 inserted into the deep hole in a threaded manner, one end of the sleeve 6 inserted into the deep hole is an open end 6a, the other end of the sleeve 6 is a closed end 6b, and the open end 6a of the sleeve 6 is horn-shaped.

A sponge 7 is provided inside the casing 6, and the sponge 7 has a tendency to expand outwards.

The sleeve 6 is provided with a push-pull rod 8 for driving the sponge 7 to move, the push-pull rod 8 is inserted into the sleeve 6 from the closed end 6b of the sleeve 6 and is connected with the sponge 7, and the sponge 7 can enter the deep hole through the open end 6a of the sleeve 6 under the driving of the push-pull rod 8 and is expanded outwards until the sponge closely abuts against the deep hole, so that the sampling range of the sampling bottle 3 is determined.

In this embodiment, the push-pull rod 8 passes through the sponge 7 and is fixed to the sponge 7. An upper baffle plate 8a and a lower baffle plate 8b for fixing the sponge 7 are respectively arranged at the two ends of the sponge 7 on the push-pull rod 8. The sleeve 6 is also internally provided with a guide groove which plays a role of guiding the movement of the upper baffle plate 8a, and the upper baffle plate 8a is arranged in the guide groove in a sliding way.

One end of the push-pull rod 8, which is positioned outside the sleeve 6, is also provided with a limiting part 8c for limiting the movement stroke of the sponge 7. The stopper 8c has a rod-like structure or a plate-like structure.

When the device works specifically, a deep hole is drilled in soil in advance, a sampling bottle 3 is placed in a spring fixing seat 2b in an inverted mode, the sampling bottle is placed in the deep hole through a connecting wire 2 for sampling, the other end of the connecting wire 2 is sleeved on a positioning column 1a of a cover plate 1 through a positioning ring 2a, the cover plate 1 is covered on the deep hole, a sleeve 6 is inserted into the deep hole, the sleeve 6 is rotated to adjust the height of a sponge 7, then the sponge 7 is pushed to move by using a push-pull rod 8 until a limiting part 8c on the push-pull rod 8 abuts against a closed end 6b of the sleeve 6, the sponge 7 is pushed to a position, above the sampling bottle 3, in the deep hole, as shown in fig. 2, the sponge 7 separates the space in the deep hole, and the; after the sampling bottle 3 is placed, VOC diffuses into the sampling bottle 3 through a polydimethylsiloxane membrane on a bottle cap and is gathered on the organic matter adsorbing material 4, after sampling is completed, the mass of adsorbed organic matters is detected through GC-MS, and the concentration of the organic matters in soil is calculated through the absorption rate, so that the sampling operation is simple, time and labor are saved, and the efficiency is higher.

The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which should not be construed as limiting the scope of the present invention. All modifications made according to the spirit of the main technical scheme of the present invention shall be covered within the protection scope of the present invention.

Claims

1. The utility model provides a soil gas sampling device for carry out soil gas sample to the soil that bores there is the deep hole, its characterized in that: the device comprises a cover plate (1) for covering the deep hole and a sampling bottle (3) connected with the cover plate (1) through a connecting line (2), wherein an organic matter adsorption material (4) is filled in the sampling bottle (3), a gas permeable filter membrane (5) is arranged on a bottle cap of the sampling bottle (3), and gas can enter the sampling bottle (3) through the gas permeable filter membrane (5) and is gathered on the organic matter adsorption material (4); the sampling device is characterized in that a sleeve (6) inserted into the deep hole is connected to the cover plate (1) in a threaded manner, one end of the sleeve (6) inserted into the deep hole is an open end (6a), the other end of the sleeve is a closed end (6b), a sponge (7) is arranged in the sleeve (6), the sponge (7) has an outward expansion tendency, a push-pull rod (8) used for driving the sponge (7) to move is arranged on the sleeve (6), the push-pull rod (8) is inserted into the sleeve (6) from the closed end (6b) of the sleeve (6) and connected with the sponge (7), and the sponge (7) can enter the deep hole through the open end (6a) of the sleeve (6) under the driving of the push-pull rod (8) and is expanded outward until the sponge closely abuts against the deep hole, so that the sampling range of the sampling bottle (3) is.

2. The soil gas sampling device of claim 1, wherein: be equipped with reference column (1a) on apron (1), the both ends of connecting wire (2) are connected with holding ring (2a) and spring holder (2b) respectively, install sampling bottle (3) in spring holder (2b), thereby holding ring (2a) can overlap the fixing of sampling bottle (3) is realized on reference column (1 a).

3. The soil gas sampling device of claim 1, wherein: the push-pull rod (8) penetrates through the sponge (7) and is fixed with the sponge (7).

4. The soil gas sampling device of claim 3, wherein: an upper baffle (8a) and a lower baffle (8b) for fixing the sponge (7) are respectively arranged at two ends of the sponge (7) on the push-pull rod (8).

5. The soil gas sampling device of claim 4, wherein: the sleeve (6) is internally provided with a guide groove which plays a role in guiding the movement of the upper baffle (8a), and the upper baffle (8a) is slidably arranged in the guide groove.

6. The soil gas sampling device of claim 1, wherein: one end of the push-pull rod (8) positioned outside the sleeve (6) is provided with a limiting part (8c) for limiting the movement stroke of the sponge (7).

7. The soil gas sampling device of claim 6, wherein: the limiting part (8c) is of a rod-shaped structure or a plate-shaped structure.

8. The soil gas sampling device of claim 1, wherein: the opening end (6a) of the sleeve (6) is trumpet-shaped.

9. The soil gas sampling device of claim 1, wherein: the air-permeable filter membrane (5) is a polydimethylsiloxane membrane.