CN218674416U

CN218674416U - Sampling device for VOC rapid detection equipment

Info

Publication number: CN218674416U
Application number: CN202222755247.7U
Authority: CN
Inventors: 朱锦涛; 周晨; 陆洁; 刘银; 章巍银
Original assignee: Jiangsu Angel Testing Technology Co ltd
Current assignee: Jiangsu Angel Testing Technology Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-03-21
Anticipated expiration: 2032-10-19

Abstract

The utility model relates to a gaseous check out test set field discloses a sampling device for VOC short-term test equipment, including the sample connecting pipe, the side of sample connecting pipe is provided with the sample gas pocket, the inside of sample connecting pipe is provided with upper end gas disk structure and lower extreme gas disk structure, be provided with the sponge between upper end gas disk structure and the lower extreme gas disk structure, the upper end of sample connecting pipe is provided with the connecting hole. The utility model discloses a rotating piston injection pole, at this moment the screw thread bent plate also can follow the piston injection pole and rotate, because screw thread bent plate and screw thread dish threaded connection, along with the rotation of screw thread bent plate, the piston injection pole rises gradually, and then fill among the sample syringe from the sample gas pocket through the gas pressure among with soil, through the mode that adopts threaded connection, it is more convenient to make the lifting of piston injection pole, also makes the piston injection pole can not descend under the effect of atmospheric pressure simultaneously, it is more stable to make the device get gaseous sampling.

Description

Sampling device for VOC rapid detection equipment

Technical Field

The utility model relates to a gaseous check out test set field, in particular to a sampling device for VOC short-term test equipment.

Background

VOCs in the general sense are commanding organic matters; but the definition in the environmental protection sense refers to an active class of volatile organic compounds, namely, volatile organic compounds which can cause harm. Until now, the farmland polluted by organic pollutants in China has reached 3600 million hectares, and the types of the pollutants comprise petroleum, polycyclic aromatic hydrocarbon, pesticide, organic chlorine and the like; large areas of land are also contaminated by the oil field exploitation and oil refining industries; the organic pollution of soil and underground water caused by various chemical enterprises is serious unprecedentedly, and the phenomena of farmland abandonment and shutdown of industrial and mining enterprises appear. A portion of the organic pollutants remain in the soil in the form of VOCs and SVOCs. The collection of the pollutants is carried out by using a sampling tool of Easydraw (patent technology) company in the United states and is absorbed by national standard (national environmental protection Standard HJ605-2011 of the people's republic of China).

The sampling device who has current VOC short-term test equipment in being arranged in soil has certain drawback when using, and at the sample in-process, this equipment is comparatively hard and its sample time is also longer from the soil sample, for this reason, we provide a sampling device who is arranged in VOC short-term test equipment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a sampling device for VOC short-term test equipment can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a sampling device for VOC rapid detection equipment comprises a sampling connecting pipe, wherein a sampling air hole is formed in the side face of the sampling connecting pipe, an upper end air disc structure and a lower end air disc structure are arranged inside the sampling connecting pipe, sponge is arranged between the upper end air disc structure and the lower end air disc structure, and a connecting hole is formed in the upper end of the sampling connecting pipe;

the three-way vent valve is connected to the connecting hole in a sealing mode, and the other two outlets of the three-way vent valve are connected with the gas filling pipe structure and the sampler structure in a sealing mode respectively.

Further, the upper end air disk structure comprises an upper end air disk, the upper end air disk is fixedly connected with the inner wall of the sampling connecting pipe, and upper end air holes are formed in the upper end air disk.

Furthermore, lower extreme gas dish structure includes the ventilative dish of lower extreme, the ventilative dish of lower extreme and the inner wall fixed connection of sampling connection pipe, be provided with the lower extreme bleeder vent on the ventilative dish of lower extreme.

Further, the gas tube structure includes the gas tube, one of them export fixed connection of gas tube and three-way breather valve, the inside sliding connection of gas tube has the piston, the upper surface of piston is provided with the mating holes, the below of mating holes is provided with the gas pocket, sliding connection has worker's shape dish on the piston, worker's shape dish is the I-shaped, and it is greater than the lower wall diameter to coil on it, the upper end fixedly connected with inflation pole of worker's shape dish.

Further, the sampler structure includes the sample syringe, one of them export fixed connection of sample syringe and three-way breather valve, the side fixedly connected with fixed plate of sample syringe, the upper end fixedly connected with screw thread dish of fixed plate, threaded connection has the screw thread bent plate on the screw thread dish, the inside of sample syringe is provided with the piston injection pole, the upper end and the screw thread bent plate fixed connection of piston injection pole, the lower extreme fixedly connected with sample piston of piston injection pole.

Furthermore, the lower end of the sampling connecting pipe is in threaded connection with a puncture cone, and the lower end of the puncture cone is conical.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. through the sampler structure that sets up, the rotating piston injection pole, at this moment the screw thread bent plate also can follow the piston injection pole and rotate, because screw thread bent plate and screw thread dish threaded connection, along with the rotation of screw thread bent plate, the piston injection pole rises gradually, and then fill the sample syringe into from the sample gas pocket through atmospheric pressure among with the gas among the soil, through the mode that adopts threaded connection, it is more convenient to make the lifting of piston injection pole, also make the piston injection pole can not descend under the effect of atmospheric pressure simultaneously, make the device get gaseous sampling more stable.

2. Through the gas tube structure that sets up, insert the sample connecting pipe among the soil, then close the three-way breather valve export that the sample syringe connects, open the three-way breather valve export that the gas tube connects, make the gas in the air rush into soil through the sample connecting pipe through reciprocating motion gas filling rod after that, when gas filling rod upward movement, the lower wall of worker shape dish is pulling the piston upward movement, under the effect of atmospheric pressure, the air gets into among the gas tube along the gas pocket on the piston, when gas filling rod downward movement, worker shape dish and mating holes cooperation, plug up the gas pocket, along with gas filling rod's down moving, gas is filled gradually among the sample connecting pipe, and then get into among the soil from the sample gas pocket, make soil further fill gas, make the gas sampling of follow-up in-process soil more convenient.

3. Through the gas tube structure and the sample gas pocket that set up, when soil blocks up the sample gas pocket, also can close the connecting hole of sample syringe on the three-way breather valve, open the connecting hole of gas tube, use the gas tube structure to aerify, break away the jam soil in the sample gas pocket.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

Fig. 1 is the utility model relates to a sampling device's for VOC short-term test equipment schematic structure diagram.

Fig. 2 is the utility model relates to a sampling connection pipe structure sketch map for VOC short-term test equipment's sampling device.

Fig. 3 is a structural view of a gas tube of a sampling device for a rapid VOC detection apparatus.

Fig. 4 is the utility model relates to a sampler structure sketch map of a sampling device for VOC short-term test equipment.

In the figure: 1. a sampling connecting pipe; 2. sampling air holes; 3. puncturing a awl; 401. an upper end air permeable disc; 402. the upper end is provided with an air hole; 5. a sponge; 601. a lower end air permeable disc; 602. the lower end is provided with an air hole; 7. connecting holes; 801. a sampling injector; 802. a fixing plate; 803. a threaded disk; 804. a threaded curved plate; 805. a piston injection rod; 901. an inflation tube; 902. an inflation rod; 903. an I-shaped disc; 904. a piston; 905. a mating hole; 10. a three-way vent valve.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a sampling device for a VOC rapid detection apparatus comprises a sampling connection pipe 1, a sampling air hole 2 is provided on a side surface of the sampling connection pipe 1, an upper end air disc structure and a lower end air disc structure are provided inside the sampling connection pipe 1, a sponge 5 is provided between the upper end air disc structure and the lower end air disc structure, and a connection hole 7 is provided on an upper end of the sampling connection pipe 1;

wherein, the connecting hole 7 is hermetically connected with a three-way vent valve 10, and the other two outlets of the three-way vent valve 10 are hermetically connected with an inflation tube structure and a sampler structure respectively;

the upper end air disk structure comprises an upper end air disk 401, the upper end air disk 401 is fixedly connected with the inner wall of the sampling connecting pipe 1, and an upper end air hole 402 is formed in the upper end air disk 401;

the lower end air disk structure comprises a lower end air disk 601, the lower end air disk 601 is fixedly connected with the inner wall of the sampling connecting pipe 1, and lower end air holes 602 are formed in the lower end air disk 601.

The inflation tube structure comprises an inflation tube 901, the inflation tube 901 is fixedly connected with one of outlets of the three-way vent valve 10, a piston 904 is connected to the interior of the inflation tube 901 in a sliding mode, a matching hole 905 is formed in the upper surface of the piston 904, an air hole is formed in the lower portion of the matching hole 905, an I-shaped disc 903 is connected to the piston 904 in a sliding mode, the I-shaped disc 903 is I-shaped, the diameter of the upper disc is larger than that of the lower disc, and an inflation rod 902 is fixedly connected to the upper end of the I-shaped disc 903.

The sampler structure comprises a sampling injector 801, wherein the sampling injector 801 is fixedly connected with one outlet of the three-way vent valve 10, the side surface of the sampling injector 801 is fixedly connected with a fixing plate 802, the upper end of the fixing plate 802 is fixedly connected with a threaded disc 803, the threaded disc 803 is in threaded connection with a threaded curved plate 804, the interior of the sampling injector 801 is provided with a piston injection rod 805, the upper end of the piston injection rod 805 is fixedly connected with the threaded curved plate 804, the lower end of the piston injection rod 805 is fixedly connected with a sampling piston, the piston injection rod 805 is rotated, at the moment, the threaded curved plate 804 can rotate along with the piston injection rod 805, as the threaded curved plate 804 is in threaded connection with the threaded disc 803, the piston injection rod 805 gradually rises, gas in soil is filled into the sampling injector 801 from a sampling air hole 2 through air pressure, the piston injection rod 805 is more conveniently lifted by adopting a threaded connection mode, and the piston injection rod 805 cannot fall under the action of the air pressure, so that the gas sampling of the device is more stable.

Inserting a sampling connecting pipe 1 into soil, closing an outlet of a three-way vent valve 10 connected with a sampling injector 801, opening an outlet of the three-way vent valve 10 connected with an inflation pipe 901, enabling air in the air to be flushed into the soil through the sampling connecting pipe 1 by reciprocating an inflation rod 902, pulling a piston 904 to move upwards by a lower disc of an I-shaped disc 903 when the inflation rod 902 moves upwards, enabling the air to enter the inflation pipe 901 along an air hole in the piston 904 under the action of air pressure, enabling the I-shaped disc 903 to be matched with a matching hole 905 to block the air hole when the inflation rod 902 moves downwards, enabling the air to be gradually filled into the sampling connecting pipe 1 along with the downward movement of the inflation rod 902, and further enabling the soil to be filled with the air from a sampling air hole 2, and enabling the soil to be more convenient to sample the air in the subsequent process.

The lower end of the sampling connecting pipe 1 is in threaded connection with a puncture cone 3, the lower end of the puncture cone 3 is conical, when soil blocks the sampling air hole 2, a connecting hole of a sampling injector 801 on the three-way vent valve 10 can be closed, a connecting hole of an inflation pipe 901 is opened, inflation is carried out by using an inflation pipe structure, and the blocked soil in the sampling air hole 2 is flushed.

It should be noted that, the utility model relates to a sampling device for VOC short-term test equipment, when using, at first, insert sampling connecting pipe 1 among the soil, then close the three-way breather valve 10 outlet that sampling syringe 801 connects, open the three-way breather valve 10 outlet that gas tube 901 connects, then make the gas in the air wash into the soil through sampling connecting pipe 1 through reciprocating motion gas filling rod 902, when gas filling rod 902 moves up, the lower plate of worker's shape disc 903 is drawing piston 904 and is moving up, under the effect of atmospheric pressure, the air gets into gas tube 901 along the gas pocket on piston 904, when gas filling rod 902 moves down, worker's shape disc 903 and mating holes 905 cooperate, block up the gas pocket, along with moving down of gas filling rod 902, the gas is filled into sampling connecting pipe 1 gradually, and then get into the soil from sampling gas pocket 2, make the soil further fill gas, make things convenient for the gas sampling of follow-up in-process soil more;

after the air inflation is completed, the air inlet of the air inflation tube 901 is closed, the air inlet of the sampling injector 801 is opened, then the piston injection rod 805 is rotated, at the moment, the threaded curved plate 804 can also rotate along with the piston injection rod 805, the threaded curved plate 804 is in threaded connection with the threaded disc 803, the piston injection rod 805 gradually rises along with the rotation of the threaded curved plate 804, further, air in soil is filled into the sampling injector 801 from the sampling air hole 2 through air pressure, the piston injection rod 805 is more conveniently lifted through the adoption of a threaded connection mode, meanwhile, the piston injection rod 805 cannot fall under the action of the air pressure, and the device is enabled to be more stable in air sampling.

When the sampling air hole 2 is blocked by soil, the air outlet hole of the sampling injector 801 on the three-way vent valve 10 can be closed, the air outlet hole of the inflation tube 901 is opened, the inflation tube structure is used for inflating, the blocked soil in the sampling air hole 2 is flushed, and then sampling is carried out.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A sampling device for VOC rapid detection equipment, includes sample connecting pipe (1), its characterized in that: a sampling air hole (2) is formed in the side face of the sampling connecting pipe (1), an upper end air disc structure and a lower end air disc structure are arranged inside the sampling connecting pipe (1), sponge (5) is arranged between the upper end air disc structure and the lower end air disc structure, and a connecting hole (7) is formed in the upper end of the sampling connecting pipe (1);

and the connecting hole (7) is hermetically connected with a three-way vent valve (10), and the other two outlets of the three-way vent valve (10) are hermetically connected with the gas filling pipe structure and the sampler structure respectively.

2. The sampling device for the rapid VOC detection equipment according to claim 1, wherein: the upper end air disc structure comprises an upper end air disc (401), the upper end air disc (401) is fixedly connected with the inner wall of the sampling connecting pipe (1), and upper end air holes (402) are formed in the upper end air disc (401).

3. The sampling device for the rapid VOC detection equipment of claim 1, wherein: the lower extreme gas dish structure includes lower extreme ventilative dish (601), the inner wall fixed connection of lower extreme ventilative dish (601) and sample connecting pipe (1), be provided with lower extreme bleeder vent (602) on lower extreme ventilative dish (601).

4. The sampling device for the rapid VOC detection equipment according to claim 1, wherein: the inflation tube structure includes inflation tube (901), one of them export fixed connection of inflation tube (901) and three-way breather valve (10), the inside sliding connection of inflation tube (901) has piston (904), the upper surface of piston (904) is provided with mating holes (905), the below of mating holes (905) is provided with the gas pocket, sliding connection has H-shaped dish (903) on piston (904), H-shaped dish (903) are the I-shaped, and it is greater than the lower wall diameter to coil on it, the upper end fixedly connected with of H-shaped dish (903) inflates pole (902).

5. The sampling device for the rapid VOC detection equipment of claim 1, wherein: the sampler structure includes sample syringe (801), one of them export fixed connection of sample syringe (801) and three-way breather valve (10), the side fixedly connected with fixed plate (802) of sample syringe (801), the upper end fixedly connected with screw thread dish (803) of fixed plate (802), threaded connection has screw thread bent plate (804) on screw thread dish (803), the inside of sample syringe (801) is provided with piston injection pole (805), the upper end and the screw thread bent plate (804) fixed connection of piston injection pole (805), the lower extreme fixedly connected with sample piston of piston injection pole (805).

6. The sampling device for the rapid VOC detection equipment according to claim 1, wherein: the lower end of the sampling connecting pipe (1) is in threaded connection with a puncture cone (3), and the lower end of the puncture cone (3) is conical.