Geogas collecting device

Abstract

The utility model provides a geogas collecting device, which relates to the field of geochemistry and comprises a drill rod body and a collecting head. The collecting head comprises a collecting cylinder and a drill bit part, the top of the drill bit part is fixedly connected with a suction cylinder, a through suction hole is formed in the side wall of the suction cylinder, a collecting cavity is formed in the collecting cylinder, and the top of the suction cylinder is connected with the lower end of the drill rod body. The geogas collecting device has the beneficial effects that the geogas collecting device can be used for drilling a geogas collecting hole; when the drill rod body is lifted, the collecting barrel and the drill bit part of the collecting head can be separated up and down, and the air extracting barrel above the drill bit part is exposed, so that the air extracting device can quickly extract earth gas in the earth gas collecting hole. The blocking block can block the geogas collecting hole in the drilling and lifting process of the drill rod body, so that external air can be prevented from entering the geogas collecting hole, and the content and purity of geogas in collected gas are improved. The geogas collection device is simple to operate, the difficulty of field geogas collection can be greatly reduced, and the geogas collection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of geochemistry, concretely is a kind of ground gas collection device. BACKGROUND

[0002] Nano metal particles in surface ground gas are closely related to deep metal mineral resources, and the collection and measurement of ground gas effectively help the exploration of concealed mineral resources. The ground gas method includes active air extraction method and passive adsorption method. The passive method does not require any air extraction device, but the collector device needs to be placed at the sampling point for several days. However, this method has the disadvantages of long time consumption and low collection rate. The active air extraction method is to drill a deep hole as a ground gas collection hole at the sampling point, and then use an air extraction device (air pump or syringe) to extract the gas in the ground gas collection hole. The existing active air extraction method and ground gas extraction device have the following difficulties: it is difficult to seal the hole during drilling of the ground gas collection hole, which can easily lead to air mixing and ground gas escaping, thus affecting the quality of ground gas collection; the existing ground gas extraction device usually needs to be equipped with a power device, which has the disadvantages of complex structure, difficult operation and inconvenient transportation, and is not suitable for field operation. SUMMARY

[0003] Therefore, the utility model provides a ground gas collection device, which comprises a drill rod body and a collection head.

[0004] The drill rod body is internally provided with a collection channel. A through accommodating air hole is formed in the sidewall of the upper end of the drill rod body, and the accommodating air hole is in communication with the collection channel. A blocking block is slidably sleeved on the drill rod body.

[0005] The collection head comprises a collection cylinder and a drill bit portion. The drill bit portion is fixedly connected with an air extraction cylinder at the top. The sidewall of the air extraction cylinder is provided with a through air extraction hole. The collection cylinder is internally provided with a collection cavity. The air extraction cylinder is slidably extended from the bottom of the air extraction cylinder to the collection cavity in the collection cylinder. The top of the air extraction cylinder is connected with the lower end of the drill rod body.

[0006] Further, an impact joint is arranged at the top of the drill rod body, and the impact joint is used to connect an impact drilling device.

[0007] Further, an air extraction joint is arranged at the top of the collection cylinder. The air extraction joint is in communication with the collection cavity, and the air extraction joint is extended into the collection channel.

[0008] Further, an air extraction hose is arranged in the collection channel. The lower end of the air extraction hose is connected with the air extraction joint. The upper end of the air extraction joint is extended out of the drill rod body from the accommodating air hole. The upper end of the air extraction joint is used to connect an air extraction device.

[0009] Further, the sealing block is made of rubber material, and the lower part of the sealing block is a circular truncated cone structure with a wide upper part and a narrow lower part.

[0010] Further, the outer diameter of the collecting cylinder is larger than the outer diameter of the drill rod body.

[0011] Further, the upper end of the drill rod body is further connected with a drill rod handle.

[0012] Further, the top of the air extraction cylinder is provided with a cylindrical limiting block, the bottom of the collecting cylinder is connected with a limiting sleeve, the bottom of the limiting sleeve is provided with a limiting hole, the limiting block is located in the collecting cylinder, the outer diameter of the limiting block is smaller than the inner diameter of the collecting cylinder, and the outer diameter of the limiting block is larger than the diameter of the limiting hole.

[0013] Further, the outer wall of the air extraction cylinder is further provided with a plurality of annular air extraction grooves, and the air extraction hole is located in the air extraction groove.

[0014] Further, the limiting sleeve is threadedly connected with the inner wall of the lower end of the collecting cylinder.

[0015] The geogas collecting device has the advantages that: the geogas collecting device comprises a drill rod body and a collecting head; the drill rod body is internally provided with a collecting channel; the sidewall of the upper end of the drill rod body is provided with a penetrating containing hole; the collecting head comprises a collecting cylinder and a drill head part, the top of the drill head part is fixedly connected with an air extraction cylinder, the sidewall of the air extraction cylinder is provided with a penetrating air extraction hole, the inside of the collecting cylinder is provided with a collecting cavity, and the top of the air extraction cylinder is connected with the lower end of the drill rod body. The geogas collecting device can drill into the soil under the action of the impact hole punching device and drill a geogas collecting hole; lifting the drill rod body can separate the collecting cylinder and the drill head part of the collecting head, so that the air extraction cylinder above the drill head part is exposed, so that the air extraction device can extract the geogas in the geogas collecting hole. Meanwhile, the drill rod body is further provided with a sealing block which can seal the geogas collecting hole during the drilling and lifting of the drill rod body, so that the external air cannot enter the geogas collecting hole, and the content and purity of the geogas in the collected gas are improved. The geogas collecting device has the advantages of simple and reliable structure and portability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a whole structure schematic view of the geogas collecting device according to an embodiment of the present application.

[0017] Fig. 2 is a schematic view of the internal structure of the collecting head of the geogas collecting device according to an embodiment of the present application.

[0018] Fig. 3 is a schematic view of the structure of the geogas collecting device during operation according to an embodiment of the present application.

[0019] In the above figure: 1-drill rod body, 11-impact joint, 12-accommodate air hole, 2-collection cylinder, 21-gas extraction joint, 3-drill head, 31-gas extraction cylinder, 32-limiting block, 33-gas extraction groove, 34-gas extraction hole, 4-limiting sleeve, 5-plugging block, 6-gas extraction hose, 7-drill rod handle, 8-impact hole punching device, 81-impact weight, 82-connection block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model embodiment will be described further below with reference to the drawings.

[0021] Please refer to Figs. 1 to 3 The utility model discloses a ground gas collection device, including drill rod body 1 and collection head.

[0022] Drill rod body 1 is hollow pipe body, and drill rod body 1 inside is equipped with collection channel;Drill rod body 1 upper end lateral wall is equipped with the through accommodating air hole 12, and the accommodating air hole 12 is communicated with the collection channel;Drill rod body 1 upper still can slidably be equipped with plugging block 5;In this embodiment, plugging block 5 is rubber material, and plugging block 5 lower part is the circular table structure of upper thick lower thin.

[0023] Collection head includes collection cylinder 2 and drill head 3, and the lower part of drill head 3 is sharp cone structure, facilitates drilling into the ground gas and collects the ground into.The top of drill head 3 is fixedly connected with hollow structure's gas extraction cylinder 31, and the lateral wall of gas extraction cylinder 31 is equipped with the through gas extraction hole 34, and the inside of collection cylinder 2 is equipped with collection cavity, and gas extraction cylinder 31 can slidably extend from the bottom of gas extraction cylinder 31 to the collection cavity in collection cylinder 2, and the top of gas extraction cylinder 31 is connected with the lower end of drill rod body 1 by the way of threaded connection.

[0024] The ground gas collection device is used in, and the whole device is vertical, and gas extraction cylinder 31 is slidably received in collection cylinder 2, and the collection head and drill rod body 1 are drilled into the soil of ground gas collection ground by using impact hole punching device 8 or directly using weight to knock, and the ground gas collection hole is drilled;Wherein plugging block 5 can block ground gas collection hole, prevent ground gas from escaping or external air from mixing in ground gas collection hole;After the depth of ground gas collection hole reaches the predetermined depth, the height of drill rod body 1 is lifted, and the collection cylinder 2 and drill head 3 of collection head are separated, so that gas extraction cylinder 31 above drill head 3 is exposed, and the ground gas in ground gas collection hole is extracted by gas extraction device through accommodating air hole 12.The ground gas collection device has the advantages of simple and reliable structure and portability.

[0025] In the preferred embodiment, the top of the drill rod body 1 is provided with an impact joint 11, which is used to connect the impact drilling device 8. In this embodiment, the impact drilling device 8 includes a sliding sleeve, an impact weight 81, and an impact rod, the top of which is slidingly arranged in the sliding sleeve, the impact weight 81 is fixed at the top of the sliding sleeve, and the lower end of the impact rod is provided with a connecting block 82 which is threadedly connected with the impact joint 11. By moving the sliding sleeve downward quickly, the impact weight 81 can apply a downward impact force to the impact rod, so as to drill the collection head and the drill rod body 1 into the soil on the ground for collecting the earth atmosphere. It can be understood that the impact joint 11 can also be directly used as a knocking head, and a heavy object (such as a hammer or a stone) can be used to knock the knocking head.

[0026] In the preferred embodiment, the top of the collection cylinder 2 is also provided with an air extraction joint 21 which communicates with the collection cavity and extends into the collection channel. An air extraction hose 6 is arranged in the collection channel, the lower end of the air extraction hose 6 is connected with the air extraction joint 21, and the upper end of the air extraction joint 21 extends out of the drill rod body 1 from the containing air hole 12, and is used to connect an air extraction device.

[0027] In the preferred embodiment, the outer diameter of the collection cylinder 2 is slightly larger than the outer diameter of the drill rod body 1. In this way, the contact area between the entire device and the inner wall of the earth atmosphere collection hole is reduced, thereby reducing the frictional resistance when the collection cylinder 2 is lifted.

[0028] In the preferred embodiment, the upper end of the drill rod body 1 is also connected with a drill rod handle 7 which is vertically connected to the upper end of the drill rod body 1.

[0029] In the preferred embodiment, the top of the air extraction cylinder 31 is provided with a cylindrical limiting block 32, and the bottom of the collection cylinder 2 is connected with a limiting sleeve 4 which is threadedly connected with the inner wall of the collection cylinder 2. The bottom of the limiting sleeve 4 is provided with a limiting hole, the limiting block 32 is located in the collection cylinder, the outer diameter of the limiting block 32 is smaller than the inner diameter of the collection cylinder 2, and the outer diameter of the limiting block 32 is larger than the diameter of the limiting hole. The limiting sleeve 4 is used to prevent the drill head 3 and the air extraction cylinder from falling out of the collection cylinder 2.

[0030] In the preferred embodiment, the outer wall of the air extraction cylinder 31 is also provided with a plurality of annular air extraction grooves 33 which form a bamboo joint structure for the air extraction cylinder 31, and the air extraction hole 34 is located in the air extraction groove 33. The air extraction groove 33 can prevent the soil falling off from the inner wall of the earth atmosphere collection hole from blocking the air extraction hole 34.

[0031] The method for using the earth atmosphere collection device includes the following steps:

[0032] S1: connecting the containing hole or the collecting cylinder 2 with the air extraction device. In this embodiment, the connecting process is: connecting the air extraction joint 21 on the collecting cylinder 2 with the air extraction hose 6 which is connected with the air extraction device.

[0033] S2: sliding the blocking block 5 to the lower end of the drill rod body 1.

[0034] S3: supporting the earth gas collecting device on the ground where the earth gas is collected; drilling the earth gas collecting device into the soil to a predetermined depth to obtain an earth gas collecting hole.

[0035] S4: holding the blocking block 5 to block the top of the earth gas collecting hole, lifting the height of the drill rod body 1, and exposing the air extraction cylinder 31 from the collecting cylinder.

[0036] When holding the blocking block 5 and lifting the height of the drill rod body 1, the blocking block 5 can be stepped on.

[0037] S5: extracting the earth gas in the earth gas collecting hole by using the air extraction device.

[0038] The earth gas collecting device is simple to operate, suitable for field operation scenes, and can greatly reduce the difficulty of field earth gas collection and improve the earth gas collection efficiency.

[0039] In this document, the front, back, up, down and other orientation words are defined according to the position of the parts in the drawing and the position of the parts relative to each other, only to express the technical scheme clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application claimed.

[0040] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.

[0041] The above is only the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A geogas collection device, characterized by, The drill rod body and the collection head are included. The drill rod body is internally provided with a collection channel; the upper end side wall of the drill rod body is provided with a through accommodating air hole, which is in communication with the collection channel; and the drill rod body is further slidably sleeved with a blocking block. The collection head includes a collection cylinder and a drill head part, the top of the drill head part is fixedly connected with a suction cylinder, the side wall of the suction cylinder is provided with a through suction hole, the inside of the collection cylinder is provided with a collection cavity, the suction cylinder is slidably extended from the bottom of the suction cylinder into the collection cavity in the collection cylinder, and the top of the suction cylinder is connected with the lower end of the drill rod body.

2. The device of claim 1, wherein, The top of the drill rod body is provided with an impact joint, which is used for connecting an impact punching device.

3. The device of claim 1, wherein the device is configured to collect the earth's emanations. The top of the collection cylinder is further provided with a suction joint, which is in communication with the collection cavity, and the suction joint extends into the collection channel.

4. The device of claim 3, wherein the device is configured to be mounted on a vehicle. The collection channel is provided with a suction hose, the lower end of the suction hose is connected with the suction joint, the upper end of the suction joint extends out of the drill rod body from the accommodating air hole, and the upper end of the suction joint is used for connecting a suction device.

5. The device of claim 1, wherein, The blocking block is made of rubber, and the lower part of the blocking block is a circular truncated cone structure with a large upper diameter and a small lower diameter.

6. The device of claim 1, wherein, The outer diameter of the collection cylinder is greater than the outer diameter of the drill rod body.

7. The device of claim 1, wherein, The upper end of the drill rod body is further connected with a drill rod handle.

8. The device of claim 1, wherein, The top of the suction cylinder is provided with a cylindrical limiting block, the bottom of the collection cylinder is connected with a limiting sleeve, the bottom of the limiting sleeve is provided with a limiting hole, the limiting block is located in the collection cylinder, the outer diameter of the limiting block is smaller than the inner diameter of the collection cylinder, and the outer diameter of the limiting block is greater than the diameter of the limiting hole.

9. The device of claim 1, wherein, The outer wall of the suction cylinder is further provided with a plurality of annular suction grooves, and the suction holes are in the suction grooves.

10. The device of claim 8, wherein, The limiting sleeve is screw-connected with the inner wall of the lower end of the collection cylinder.

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