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CN-224216384-U - Automatic acquisition device for soil gas

CN224216384UCN 224216384 UCN224216384 UCN 224216384UCN-224216384-U

Abstract

The utility model discloses an automatic collecting device for soil gas, which belongs to the technical field of soil gas collection and comprises a collecting box, wherein the inner cavity of the collecting box is divided into an air storage chamber above and a control chamber below through a partition plate, an air sucking pump and an air collecting box are respectively arranged at the top and the bottom of the inner wall of the control chamber, an air sucking port of the air sucking pump is communicated with the air collecting box through a guide pipe, a strip-shaped groove is formed in the bottom of the collecting box, an inserting part which can extend to the side after being inserted into the ground is rotatably arranged in the strip-shaped groove, the inserting part is communicated with the inner cavity of the air collecting box, the inserting part comprises a rotating seat arranged in the strip-shaped groove through a rotating shaft and an air collecting pipe fixed at one end of the rotating seat, the rotating seat is of a hollow structure, one end of the rotating seat is communicated with the inner cavity of the air collecting box through a telescopic guide pipe, and the air collecting pipe is communicated with the inner cavity of the rotating seat.

Inventors

  • HAN DI
  • YAN DONGHAN
  • PAN XIAODONG
  • GU GUOHUI

Assignees

  • 吉林省地震局

Dates

Publication Date
20260508
Application Date
20250528

Claims (9)

  1. 1. The automatic collection device for the soil gas comprises a collection box (1), wherein an inner cavity of the collection box (1) is divided into an air storage chamber (3) above and a control chamber (4) below through a partition plate (2), an air suction pump (5) and an air collection box (6) are respectively arranged at the top and the bottom of the inner wall of the control chamber (4), an air suction port of the air suction pump (5) is communicated with the air collection box (6) through a guide pipe, and the automatic collection device is characterized in that a strip-shaped groove (8) is formed in the bottom of the collection box (1), an inserting part (7) which can extend to the side after being inserted into the ground is rotationally arranged in the strip-shaped groove (8), and the inserting part (7) is communicated with the inner cavity of the air collection box (6).
  2. 2. The automatic soil gas collecting device according to claim 1, wherein the inserting portion (7) comprises a rotating seat (701) arranged in the strip-shaped groove (8) through a rotating shaft and a gas collecting tube (703) fixed at one end of the rotating seat (701), the rotating seat (701) is of a hollow structure, one end of the rotating seat (701) is communicated with the inner cavity of the gas collecting box (6) through a telescopic conduit (702), and the gas collecting tube (703) is communicated with the inner cavity of the rotating seat (701).
  3. 3. The automatic soil gas collecting device according to claim 2, wherein the side wall of the gas collecting tube (703) is provided with a concave accommodating groove (709), and the accommodating groove (709) is rotatably provided with a gas collecting plate (704).
  4. 4. The automatic soil gas collecting device according to claim 3, wherein the side wall of the gas collecting plate (704) is connected with the inner wall of the accommodating groove (709) through a spring (705), an electromagnet (706) is further arranged in the accommodating groove (709), an adsorption plate capable of being adsorbed by the electromagnet (706) is embedded in the gas collecting plate (704), and after the electromagnet (706) is closed, the gas collecting plate (704) is in an outward expanding state under the action of the spring (705).
  5. 5. The automatic soil gas collecting device according to claim 4, wherein the side walls of the gas collecting tube (703) and the gas collecting plate (704) are respectively provided with an air inlet hole (707), and a solid filter screen is arranged in the air inlet holes (707).
  6. 6. The automatic soil gas collecting device according to claim 5, wherein a lifting handle (10) is arranged at the top of the collecting box (1), and a switch for controlling the opening and closing of the air pump (5) and the electromagnet (706) is arranged on the lifting handle (10).
  7. 7. The automatic soil gas collecting device according to claim 6, wherein a filter (9) for filtering moisture in air and a gas storage bag (12) communicated with the filter (9) through a soft conduit are arranged in the gas storage chamber (3), and the bottom of the filter (9) is communicated with an exhaust port of the air pump (5).
  8. 8. The automatic soil gas collecting device according to claim 7, wherein two external interfaces (11) for accessing a gas detector are arranged at the top of the collecting box (1), and the two external interfaces (11) are communicated with the gas storage bag (12) through soft guide pipes.
  9. 9. The automatic soil gas collecting device according to claim 8, wherein a limiting piece (13) is fixed at one end of the lifting handle (10) positioned in the collecting box (1), and a pressing piece (14) capable of pressing out the gas in the gas storage bag (12) is fixedly arranged on the limiting piece (13).

Description

Automatic acquisition device for soil gas Technical Field The utility model particularly relates to an automatic acquisition device for soil gas, and belongs to the technical field of soil gas acquisition. Background The soil gas acquisition technology is an important means for acquiring key information such as gas components and concentration in soil, an acquired gas sample is analyzed by a professional instrument, component content data such as oxygen, carbon dioxide and methane can be acquired, the data has important significance for researching activities of soil microorganisms, soil respiration, soil pollution conditions, evaluating agricultural soil fertility, ecological health and the like, the acquisition process is usually realized by means of a soil gas acquisition device, the existing soil gas acquisition device is mostly a simple foundation structure of a vacuum pump connected with a sampling tube, the sampling tube is inserted into soil, gas is extracted by the vacuum pump and then detected, and the gas acquisition device has a basic acquisition effect, but has an excessively simple structure, and a gas acquisition port can only extend in the longitudinal direction and cannot extend in the transverse direction when in use, so that the coverage area of the acquired gas sample is smaller, and multiple acquisition is often required. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provide an automatic collecting device for soil gas, so as to achieve the purposes of convenience in use and wide collecting range. The utility model provides an automatic collection system of soil gas, includes the collecting box, the inner chamber of collecting box is separated into the control room of the gas receiver and the below of top through the division board, aspiration pump and gas collecting box are installed respectively to control room inner wall top and bottom, aspiration port and the gas collecting box of aspiration pump pass through the pipe intercommunication, the bar groove has been seted up to the bottom of collecting box, bar inslot rotates and is provided with the grafting portion that can extend to the side after inserting underground, grafting portion with the inner chamber intercommunication of gas collecting box, will peg graft the portion and insert underground during the use, the side also can expand simultaneously when grafting portion inserts underground to make grafting portion not only can vertically go deep into soil, also have certain extension space in the side, thereby increase the collection scope to soil gas. Further, the grafting portion is including installing the rotation seat in the bar inslot through the pivot and fixing the gas collecting tube of rotation seat one end, it is hollow structure to rotate the seat, rotate the one end of seat through flexible pipe with the inner chamber intercommunication of gas collecting box, the gas collecting tube with rotate the inner chamber intercommunication of seat, rotate the gas collecting tube to vertical state during the use, then be used for with soil gas contact after inserting the gas collecting tube underground, rethread aspiration pump open alright with the outside soil gas suction of gas collecting tube, gas gets into the gas collecting box after passing through gas collecting tube, rotation seat and flexible pipe in proper order, then by the aspiration pump into the gas storage room. Further, the side wall of the gas collecting tube is provided with a concave accommodating groove, the gas collecting plate is rotationally arranged in the accommodating groove and is used for expanding to the side in the process of inserting the gas collecting tube into soil, and therefore the collection area of the soil gas is enlarged. Further, the lateral wall of gas collecting plate pass through the spring with the inner wall connection of storage tank, still be provided with the electro-magnet in the storage tank, the gas collecting plate is embedded to have the adsorption piece that can be adsorbed by the electro-magnet, after the electro-magnet is closed, the gas collecting plate is the state of outwards expanding under the spring effect, when using, the electro-magnet keeps opening when the gas collecting tube does not insert soil, makes the gas collecting plate laminating in the storage tank, and the gas collecting plate descends to the electro-magnet of closing behind the soil certain degree of depth, and the gas collecting plate loses the adsorption effect of electro-magnet and outwards expands under the spring effect, and simultaneously with the decline of gas collecting tube, the gas collecting plate alright further outwards expand transversely inserts in the soil. Further, air inlets are formed in the side walls of the gas collecting pipes and the gas collecting plates, and solid filter screens are arranged in the air inlets, so that soil gas can be sucked by the air sucking pump through t