Soil coring device for environment detection

Abstract

The utility model discloses a soil coring device for environment detection. The soil coring device comprises a drill bit; the flow stopping ring is connected with the drill bit; the coring pipe is connected with the flow stopping ring opposite to the other side of the drill bit; the pipe cap is connected with the coring pipe opposite to the other side of the flow stopping ring; the limiting table is arranged on the flow stopping ring; and the flow stopping plate is hinged with the limiting table. According to the soil coring device for environment detection, the core barrel is prevented from being blocked, a rock core is prevented from being lost, and the coring rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of soil coring devices, in particular to a soil coring device for environmental detection. Background Art

[0002] Soil pollution status survey is an investigation activity conducted to understand the status of soil pollution. Through sampling surveys, the types and quantities of harmful substances contained in the soil can be understood, providing a scientific basis for strengthening environmental management and formulating prevention and control measures. The method of investigation is to take samples, test and analyze them according to a certain density. The sampling process includes deep soil sample collection and surface soil sample collection. Deep soil sampling requires reducing disturbance to the sample. Usually, a punching or direct-push drill is used to extract the core. The commonly used drilling rig types in the industry include 30 drill hammer drill and Geoprobe (GP drill). The 30 drill usually includes two drilling methods, rotary and hammer. The coring device is a single-layer alloy steel pipe with an alloy drill bit or diamond drill bit connected to the bottom. The GP drill uses hydraulic direct-push drilling. The coring device includes an external metal pipe and an internal PVC core tube. When on-site drilling encounters special strata, the existing coring device still has some problems:

[0003] Existing GP coring devices are difficult to drill into hard formations such as miscellaneous fill layers, gravel layers or bedrock. Core tubes are often blocked or broken, making it difficult for the core to enter the tube, resulting in a low coring rate and an inability to meet sampling needs. At the same time, core tubes are disposable consumables with high chromium prices. Blockage and breakage of core tubes lead to increased costs.

[0004] The existing 30-drill coring device encounters loose strata such as aquifers, sand layers, and gravel layers. Since the drill bit of the coring device is open, the core falls under the action of gravity when the drill bit is removed, making it difficult to remove the core, resulting in a low coring rate and causing secondary pollution. Utility Model Content

[0005] The utility model aims to solve the deficiencies in the prior art and provides a soil coring device for environmental detection, which can prevent the core tube from being blocked, prevent the core from being lost, and improve the coring rate.

[0006] The purpose of the utility model is achieved in the following manner: a soil coring device for environmental detection, comprising:

[0007] drill;

[0008] a stop ring connected to the drill bit;

[0009] a core tube connected to the flow-stop ring on the other side relative to the drill bit;

[0010] a pipe cap connected to the core pipe on the other side of the stop ring;

[0011] A limiting table is arranged on the flow-stopping ring.

[0012] A flow-stopping plate is hinged to the limiting table.

[0013] As an optional scheme of the technical scheme of the utility model, the flow-stopping ring is threadedly connected with the drill bit.

[0014] As an optional scheme of the technical scheme of the utility model, the coring pipe is threadedly connected with the flow-stopping ring.

[0015] As an optional scheme of the technical scheme of the utility model, the pipe cap is threadedly connected with the coring pipe.

[0016] As an optional scheme of the technical scheme of the utility model, the coring pipe is composed of two coring grooves.

[0017] The utility model has the advantages of:

[0018] (1) When the equipment of the utility model drills, it can cooperate with a rotary drilling machine to drill into hard strata such as miscellaneous fill, bedrock layer and gravel layer, so that drilling is faster, and work efficiency is improved.

[0019] (2) When coring, the gravel and quicksand enter the coring pipe under the action of thrust through the flow-stopping ring; when the core is taken out, the core in the core pipe is extruded downward under the action of gravity, the inner wall hinge is extruded by the core to realize the closing of the end of the coring pipe, so that the core loss is effectively prevented, and the coring rate is improved.

[0020] (3) After the coring device containing the core is taken out to the ground, the coring pipe is unscrewed and opened from the middle, the core is distributed in the two coring grooves, the disturbance to the core is reduced, the soil layer structure can be better confirmed, the soil pollution is reduced, and the sampling quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0022] Figure 1 It is a schematic of the soil coring device for environmental detection of the utility model embodiment 1 Figure 1 ;

[0023] Figure 2 Schematic diagram of a soil coring device for environmental testing according to Example 1 of the utility model Figure 2 ;

[0024] Figure 3 This is a schematic diagram of a flow-stop ring of a soil coring device for environmental testing according to Example 1 of the present utility model;

[0025] Figure 4 This is a schematic diagram of a coring tube of a soil coring device for environmental testing in Example 1 of the utility model.

[0026] Reference numerals:

[0027] 1. Drill bit; 2. Stop ring; 3. Core tube; 4. Pipe cap; 7. Limit table; 8. Stop plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In the description of the embodiments, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, connections through an intermediary medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on their specific circumstances.

[0031] Example 1

[0032] like Figures 1-3 As shown, a soil coring device for environmental testing is composed of the following components: a drill bit 1, a stop ring 2, a coring tube 3, a pipe cap 4, a limit platform 7, and a stop plate 8. The connection relationship between these components is as follows: the stop ring 2 is connected to the drill bit 1; the coring tube 3 is connected to the stop ring 2 on the other side of the drill bit 1; the pipe cap 4 is connected to the coring tube 3 on the other side of the stop ring 2; the limit platform 7 is provided on the stop ring 2; and the stop plate 8 is hinged to the limit platform 7.

[0033] In order to facilitate installation and disassembly of the flow stop ring 2 and the drill bit 1, the flow stop ring 2 is threadedly connected with the drill bit 1.

[0034] In order to facilitate installation and disassembly of the coring tube 3, the coring tube 3 is threadedly connected with the flow stop ring 2.

[0035] In order to facilitate installation and disassembly of the pipe cap 4, the pipe cap 4 is threadedly connected with the coring tube 3.

[0036] By Figure 4 It can be seen that the coring tube 3 is composed of two coring grooves 9.

[0037] The working flow of the embodiment is as follows: firstly, the drill bit 1, the flow stop ring 2, the coring tube 3 and the pipe cap 4 are installed together; then, earth drilling and sampling are performed, the core passes through the drill bit 1, pushes open the flow stop plate 8 and enters the flow stop ring 2 and the coring tube 3; then, the drill bit is pulled out of the soil, the core pushes the flow stop plate 8, so that the two flow stop plates 8 are closed, preventing the core from falling out of the flow stop ring 2; then, the pipe cap 4 is removed from the coring tube 3; and then, the core is taken out of the coring tube 3.

[0038] The above merely describes the preferred embodiments of the utility model and is not used to 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. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary technical personnel; when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the utility model.

Claims

1. An environmental surveying soil coring device characterized by comprising: Comprising: a drill bit (1); a flow stop ring (2) connected with the drill bit (1); a coring tube (3) connected with the flow stop ring (2) on the other side relative to the drill bit (1); a tube cap (4) connected with the coring tube (3) on the other side relative to the flow stop ring (2); a limiting platform (7) arranged on the flow stop ring (2); a flow stop plate (8) hinged with the limiting platform (7).

2. The soil coring device for environmental detection according to claim 1, wherein, The flow stop ring (2) is threadedly connected with the drill bit (1).

3. The soil coring device for environmental detection according to claim 1, wherein The coring tube (3) is threadedly connected with the flow stop ring (2).

4. The soil coring device for environmental detection according to claim 1, wherein The tube cap (4) is threadedly connected with the coring tube (3).

5. The soil coring device for environmental detection according to claim 1, wherein The coring tube (3) is composed of two coring grooves (9).

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