CN212646227U

CN212646227U - Automatic sampling and detecting device for pollutant gas of refuse landfill

Info

Publication number: CN212646227U
Application number: CN202020867068.0U
Authority: CN
Inventors: 肖遥; 熊波文; 丁成钢
Original assignee: Shenzhen Hanyu Environmental Technology Co ltd
Current assignee: Shenzhen Hanyu Environmental Technology Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-03-02
Anticipated expiration: 2030-05-20

Abstract

The utility model relates to a landfill gaseous pollutant automatic sampling detection device in environment measuring field, including sampling device and detection device two parts. The loop bar outside is equipped with the mounting, and the bottom is equipped with conical probe, and the lateral wall is equipped with self tapping screw, and the end of probe is equipped with the one-way first opening that passes through of air current, and the bottom and the first opening intercommunication in gas collection district are equipped with the one-way second opening that passes through of air current on the piston in the gas collection district, and the air duct is connected to second opening top, and detection device is connected to the other end of air duct. The distribution of the one-way air inlet valves in the structure is used for limiting the one-way flowing direction of air flow, and the two steps of gas collection and pushing-out inspection can be realized by pushing and pulling the pull rod without disassembling and assembling the equipment structure. Before the air-collecting device is used, the piston is pushed to the bottom of the air-collecting area, and original air in the air-collecting area can be discharged through the air duct, so that the influence on the next detection result is avoided. Has the advantages of simple structure, perfect function, flexible use and low cost.

Description

Automatic sampling and detecting device for pollutant gas of refuse landfill

Technical Field

The utility model relates to an environmental detection technical field, concretely relates to automatic sampling detection device of landfill pollutant gas.

Background

The garbage disposal method can be generally divided into several methods such as sanitary landfill, incineration, composting and the like. The refuse landfill is a refuse centralized stacking site adopting a sanitary landfill mode, and is widely applied in China due to low cost. The refuse landfill generally adopts the mode of layering earthing landfill to handle rubbish, piles up a layer rubbish and covers a layer loess after, can reduce the pollution of rubbish like this. The waste is slowly decomposed by the action of microorganisms, and because the landfill is sealed, bacteria in the landfill decompose the waste under anaerobic (anaerobic) conditions. One by-product of this anaerobic decomposition is landfill gas, which contains about 50% methane and 50% carbon dioxide, with small amounts of nitrogen and oxygen. The greenhouse hazard of methane is larger than that of carbon dioxide, the greenhouse effect of methane is 21 times of that of equal-quality carbon dioxide, if the methane cannot be discharged in time, the more the methane is accumulated, and finally the methane can explode under the double pressure of self pressure and garbage stack pressure, so that the garbage stack collapses, and even the life and property safety of residents around a landfill site is endangered. There is therefore a need for real-time monitoring of the gas composition of a landfill.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough and defect of prior art, provide a landfill gaseous automatic sampling detection device of pollutant.

The purpose of the utility model is realized through the following technical scheme:

an automatic sampling and detecting device for pollutant gas in a refuse landfill comprises a sampling device and a detecting device, the sampling device comprises a sampling device body and is characterized in that the sampling device body is a loop bar, a fixing piece is arranged on the outer side of the loop bar, a positioning pin is arranged on the fixing piece, a conical probe is arranged at the bottom end of the loop bar, self-tapping threads are arranged on the outer side walls of the loop bar and the probe, a first opening allowing airflow to pass through in a one-way mode is arranged at the tail end of the probe, the airflow flows from the outside of the probe to the inside of the probe, the collecting part comprises a gas collecting area close to the probe, the bottom end of the gas collecting area is communicated with the first opening, a piston is arranged in the gas collecting area, a fixed connection pull rod is arranged on the piston, the top end of the pull rod extends out of the top end of the sleeve rod, a second opening allowing airflow to pass through in a single direction is arranged on the piston, an air guide pipe is connected above the second opening, the airflow direction flows into the air guide pipe from the gas collecting area, and the other end of the air guide pipe is connected with a detection device.

Specifically, a sealing ring is arranged between the piston and the side wall of the gas collection area.

Specifically, the fixing piece is fixedly connected with the outer side wall of the sleeve, and the positioning pin is in threaded connection with the fixing piece.

Specifically, a positioning ring is fixedly arranged on the inner wall of the sleeve rod, and the air guide pipe is sleeved in the positioning ring.

Specifically, the first opening and the second opening are both provided with one-way air inlet valves.

Compared with the prior art, the utility model following advantage and beneficial effect are included: the utility model discloses a sampling device and detection device two parts, detection device and sampling device interconnect, carry out direct monitoring to the sample that sampling device gathered. The distribution of the one-way air inlet valves in the structure is used for limiting the one-way flowing direction of air flow, and the two steps of gas collection and pushing-out inspection can be realized by pushing and pulling the pull rod without disassembling and assembling the equipment structure. Meanwhile, the piston is pushed to the bottom of the gas collection area before use, and original air in the gas collection area can be discharged through the gas guide pipe, so that the influence on the next detection result is avoided. The utility model has the advantages of simple structure, perfect function, flexible use and low cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "provided with", "connected", etc. should be interpreted broadly, and the specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art.

Furthermore, the terms "upper", "lower", "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 describing the present invention and simplifying the 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. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in the attached drawings, the specific implementation process of the utility model is as follows:

automatic sampling detection device 21 of landfill gaseous pollutants, including sampling device and detection device 21 two parts, detection device 21 and sampling device interconnect carry out direct monitoring to the sample that sampling device gathered.

The sampling device main part is loop bar 11, and the loop bar 11 outside is equipped with mounting 12. The bottom end of the loop bar 11 is provided with a conical probe 14, the tail end of the probe 14 is provided with a first opening 15 allowing air flow to pass through in a single direction, the flowing direction of the air flow is from the outside of the probe 14 to the inside of the probe 14, and a collecting component is arranged in the loop bar 11. The outer side walls of the shank 11 and the probe 14 are provided with self-tapping threads 16. Preferably, the fixing member 12 is provided with a positioning pin 13.

The collecting part comprises a gas collecting area 17 close to the probe 14, the bottom end of the gas collecting area 17 is communicated with the first opening 15, a piston 18 is arranged in the gas collecting area 17, a pull rod 19 is fixedly connected to the piston 18, and the top end of the pull rod 19 extends out of the top end of the loop rod 11. The piston 18 is provided with a second opening 20 allowing the air flow to pass through in one direction, an air duct is connected above the second opening 20, the air flow direction flows into the air duct from the air collecting region 17, and the other end of the air duct is connected with a detection device 21.

Specifically, the one-way air intake function at the first opening 15 and the second opening 20 is realized by a one-way air intake valve.

The utility model discloses an embodiment is:

holding the fixing part 12 horizontal direction and rotating, simultaneously advancing the tip of probe 14 from the earth's surface to the underground vertically downwards, until the fixing part 12 attaches to the earth's surface, run through fixing part 12 with locating pin 13 and stretch into the earth's surface and fix loop bar 11, piston 18 is located the gas collection district 17 bottommost this moment, upwards stimulate pull rod 19 and drive piston 18 upwards, the gaseous first opening 15 of district's gas flow entry that awaits measuring gets into gas collection district 17 under the effect of one-way admission valve, treat that gas collection district 17 is full of gas after, press piston 18 downwards, sample gas flows out from second opening 20, offer detection device 21 and detect.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. Landfill gaseous automatic sampling detection device of pollutant, its characterized in that: including sampling device and detection device, the sampling device main part is the loop bar, and the loop bar outside is equipped with the mounting, is equipped with the locating pin on the mounting, and the loop bar bottom is equipped with conical probe, and the lateral wall of loop bar and probe is equipped with self tapping screw, and the end of probe is equipped with the first opening that allows the one-way passage of air current, and the flow direction of air current is in to flowing to the probe from the probe is outside, is equipped with the collecting part in the loop bar, the collecting part is including the gas collection district that is close to the probe, and the bottom and the first opening intercommunication in gas collection district are equipped with the piston in the gas collection district, are equipped with the fixed connection pull rod on the piston, and the top of pull rod stretches out from the top of loop bar, is equipped with the one-way second opening that allows the air current to pass through.

2. The automatic sampling and detecting device for pollutant gas of refuse landfill according to claim 1, characterized in that: and a sealing ring is arranged between the piston and the side wall of the gas collection area.

3. The automatic sampling and detecting device for pollutant gas of refuse landfill according to claim 1, characterized in that: the fixing piece is fixedly connected with the outer side wall of the sleeve, and the positioning pin is in threaded connection with the fixing piece.

4. The automatic sampling and detecting device for pollutant gas of refuse landfill according to claim 1, characterized in that: and a positioning ring is fixedly arranged on the inner wall of the sleeve rod, and the air guide pipe is sleeved in the positioning ring.

5. The automatic sampling and detecting device for pollutant gas of refuse landfill according to claim 1, characterized in that: and the first opening and the second opening are both provided with one-way air inlet valves.