Underground water sample collecting drill bit
By installing a dredging brush in the drainage sleeve of the groundwater sample collection drill bit, the problem of water diversion pipe is solved, efficient water sample collection and equipment loss are achieved.
Patent Information
- Application Number
- CN202421044672.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-05-14
AI Technical Summary
When extracting water samples, existing groundwater sample collection devices are prone to blockage due to silt, sand and gravel entering the end of the water pipe, resulting in manual cleaning of the water pipe, which is troublesome to operate and reduces collection efficiency.
A groundwater sample collection drill bit is designed, with a guide sleeve and a dredging brush at the end of the drill bit. The water-drawing pipe is rotated and moved linearly in the dredging sleeve. The water-drawing hole is cleaned by a dredging brush to prevent blockage.
It realizes the direct cleaning of the water diversion hole at any water extraction location without extracting the water diversion pipe, which improves the water sample collection efficiency and reduces the use loss of the water diversion pipeline.
Smart Images
Figure CN222774332U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic geological engineering, in particular to a groundwater sample collection drill bit. Background Art
[0002] Groundwater refers to water stored in the gaps in rocks below the ground. In a narrow sense, it refers to water in saturated aquifers below the groundwater surface. Groundwater is an important component of water resources. Due to its stable water volume and good water quality, it is one of the important water sources for agricultural irrigation, industry, mining and cities.
[0003] In order to utilize groundwater resources, it is necessary to first understand the composition of groundwater to ensure the safety of using groundwater. Therefore, groundwater sampling equipment is needed to collect water samples. In order to further improve the efficiency of water sampling, in the prior art, a guide hole is opened in the middle of the collection drill bit, and the water sample in the guide hole is extracted and collected through a water pipe and a pump body.
[0004] However, in actual use, since the working environment of the drill bit is mostly in an area with concentrated silt and gravel, when the water sample is extracted from the water pipe, debris will enter the water suction hole, causing the end of the water pipe to be blocked. In response to this problem, the existing water sample collection device often cleans the blocked position by manually cleaning the water pipe after pulling it out, and then putting it back into the guide hole. This method has no obvious disadvantages when collecting shallow groundwater, but it is more troublesome to operate when the water end is probed into a deeper position underground. Pulling out the water pipe for a long distance will not only reduce the efficiency of water sample collection, but also cause certain losses to the end of the water pipe. Utility Model Content
[0005] The utility model aims to provide a groundwater sample collection drill bit to solve the technical problem in the prior art that the use efficiency is reduced due to the need to draw out the water pipe for cleaning.
[0006] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:
[0007] A groundwater sample collection drill bit, comprising a drill bit, a water diversion hole is provided inside the drill bit, a drainage sleeve is provided on the surface of the end of the drill bit at a coaxial position of the water diversion hole, a plurality of rows of water diversion holes are provided on the circumference of the side surface of the drainage sleeve, a drainage brush is provided between two adjacent rows of the water diversion holes, and the drainage brush is provided on the inner wall of the drainage sleeve;
[0008] The other end of the drill bit is connected to a drill rod with an extended through hole, and the extended through hole is coaxially arranged with the water diversion through hole. A water collection and diversion pipeline is movably arranged in the extended through hole, and a water diversion hole is arranged on the water diversion end of the water collection and diversion pipeline. The water diversion hole can collect water samples in the dredging sleeve, and the diameter of the water diversion hole is larger than the bristle diameter of the dredging brush.
[0009] As a preferred solution of the utility model, a circular arc cover top is fixedly provided on the end of the drainage sleeve.
[0010] As a preferred solution of the utility model, the drill bit surface has a plurality of rotary drill blocks in a circumferential array, and the thickness of the rotary drill blocks is greater than the total length of the drainage sleeve and the circular arc cover top.
[0011] As a preferred solution of the utility model, the water diversion hole is arranged in the same manner as the water guide hole, and corresponding marking scales are provided on the drill rod and the water collection and diversion pipeline. When the marking scales on the drill hole and the water collection and diversion pipeline are aligned with each other, the water diversion hole and the dredging brush are arranged opposite to each other.
[0012] As a preferred solution of the utility model, a limiting ring sleeve is provided at the rear end of the drill rod, and a plurality of balls are embedded and rolled on the inner wall of the limiting ring sleeve, and the balls are in close contact with the outer wall of the water collection and diversion pipeline.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The utility model adds a drainage sleeve to the end of the drill bit, and a drainage brush is arranged in the drainage sleeve. The water collection diversion pipeline is rotated and linearly moved in the drainage sleeve, and the drainage brush is used to clean the water diversion hole at the end of the water collection diversion pipeline and prevent blockage, so that the overall device can directly clean the water diversion hole at any water collection position without drawing out the water collection diversion pipeline. Therefore, while improving the blockage of the water diversion hole by silt and sand, the collection efficiency of the water sample collection device is improved, and the use loss of the water collection diversion pipeline is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model, which specifically includes a drill bit, a drill rod and a water collection and diversion pipeline.
[0018] The numbers in the figure represent the following:
[0019] 1. Drill bit; 2. Water diversion perforation; 3. Drainage sleeve; 4. Water diversion hole; 5. Drainage brush; 6. Extension perforation; 7. Drill rod; 8. Collection water diversion pipeline; 9. Water diversion hole; 10. Arc cover top; 11. Rotary drill block; 12. Marking scale; 13. Limiting ring; 14. Ball. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] like Figure 1 to Figure 2 As shown, the utility model provides a groundwater sample collection drill, including a drill 1, a water diversion hole 2 is provided inside the drill 1, and the water diversion hole 2 is arranged at the center of the drill 1, and is used for the water diversion end of the water diversion pipeline 8 to pass through the drill 1 and enter the drainage sleeve 3 at its end. A drainage sleeve 3 is arranged on the surface of the end of the drill 1 at a coaxial position with the water diversion hole 2, and multiple rows of water diversion holes 4 are circumferentially provided on the side surface of the drainage sleeve 3, which are used to guide external water samples into the drainage sleeve 3, and a drainage brush 5 is arranged between two adjacent rows of water diversion holes 4, which is used to dredge the water diversion end of the water diversion pipeline 8. The drainage brush 5 is arranged on the inner wall of the drainage sleeve 3. The other end of the drill bit 1 is connected to a drill rod 7 with an extended through hole 6, and the extended through hole 6 is coaxially arranged with the water diversion through hole 2. A water collection and diversion pipeline 8 is movably arranged in the extended through hole 6, and a water diversion hole 9 is arranged on the water diversion end of the water collection and diversion pipeline 8. The water diversion hole 9 can collect water samples in the dredging sleeve 3, and the diameter of the water diversion hole 9 is larger than the bristle diameter of the dredging brush 5.
[0022] When the end of the water collection pipeline 8 enters the drainage sleeve 3, the water diversion hole 9 thereon will draw water in the drainage sleeve 3, and in order to prevent the water diversion hole 9 from being blocked, a dredging brush 5 is provided to dredge the water diversion hole 9. The dredging method can be that the end of the water collection pipeline 8 rotates or moves axially in the drainage sleeve 3, and the dredging brush 5 contacts the water diversion hole 9 to clean or prevent the water diversion hole 9 from being blocked.
[0023] like Figure 2As shown, a limiting ring sleeve 13 is provided at the rear end of the drill pipe 7, and a plurality of balls 14 are embedded and rolled on the inner wall of the limiting ring sleeve 13, and the balls 14 are in close contact with the outer wall of the water collection and diversion pipeline 8.
[0024] The limiting ring 13 is used to limit the lateral shaking of the water collection pipeline 8 without affecting its rotation and axial movement, so as to cause the gap between the water collection pipeline 8 and the inner wall of the drill pipe 7 to be too small, thereby causing the rotation and movement of the water collection pipeline 8 to be poor.
[0025] The ball 14 is embedded in the limiting ring sleeve 13, and the ball 14 can roll in any direction, thereby forming the axial movement and circumferential rotation of the water collection and diversion pipeline 8.
[0026] An arc cover top 10 is fixedly provided at the end of the drainage sleeve 3. On the one hand, it plays a sealing role to prevent silt and sand from entering the interior of the drainage sleeve 3 from the end thereof. On the other hand, the design of the arc top can form an arc-shaped pit at the drilling position, which is conducive to the inflow of water samples, thereby facilitating the absorption of water samples by the drainage sleeve 3.
[0027] Furthermore, a plurality of rotary drilling blocks 11 are arranged in a circumferential array on the surface of the drill bit 1 , and the thickness of the rotary drilling block 11 is greater than the total length of the drainage sleeve 3 and the circular arc cover top 10 .
[0028] The dredging sleeve 3 and the arc cover top 10 are arranged under the rotary drilling block 11, which can provide certain protection for the two. On the one hand, it can facilitate rotary drilling to form a collection position, and on the other hand, it can prevent the dredging sleeve 3 and the arc cover top 10 from being damaged by hard sand and gravel.
[0029] In addition, the water inlet holes 9 are arranged in the same manner as the water guide holes 4, that is, the water inlet holes 9 arranged at the end of the water collection and diversion pipeline 8 and the water guide holes 4 arranged on the side of the drainage sleeve 3 are arranged in the same array. For example, they can be ten rows of circular arrays with five holes in each row, so that on the one hand, water samples can be absorbed to the greatest extent, and on the other hand, it can facilitate the alignment of the drainage brush 5 and the water inlet holes 9.
[0030] The drill rod 7 and the water collection and diversion pipeline 8 are provided with corresponding marking scales 12. When the marking scales 12 on the drill hole and the water collection and diversion pipeline 8 are aligned with each other, the water diversion hole 9 and the dredging brush 5 are arranged opposite to each other. That is, for the convenience of use, when the marking scales 12 on the drill hole and the water collection and diversion pipeline 8 are aligned with each other, when the water collection and diversion pipeline 8 moves axially, the water diversion hole 9 and the dredging brush 5 can be accurately arranged opposite to each other, so that the water diversion hole 9 can be brushed, cleaned and dredged more effectively when the water collection and diversion pipeline 8 moves axially.
[0031] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.
Claims
1. A groundwater sample collection drill bit, characterized in that: The invention comprises a drill bit (1), wherein a water guide hole (2) is provided inside the drill bit (1), a drainage sleeve (3) is provided on the end surface of the drill bit (1) at a coaxial position with the water guide hole (2), a plurality of rows of water guide holes (4) are circumferentially provided on the side surface of the drainage sleeve (3), a drainage brush (5) is provided between two adjacent rows of the water guide holes (4), and the drainage brush (5) is provided on the inner wall of the drainage sleeve (3); The other end of the drill bit (1) is connected to a drill rod (7) having an extended through hole (6), the extended through hole (6) being coaxially arranged with the water diversion through hole (2), a water collection and diversion pipeline (8) being movably arranged in the extended through hole (6), a water diversion hole (9) being arranged on the water diversion end of the water collection and diversion pipeline (8), the water diversion hole (9) being capable of collecting water samples in the drainage sleeve (3), and the diameter of the water diversion hole (9) being larger than the bristle diameter of the drainage brush (5).
2. A groundwater sampling drill according to claim 1, characterized in that: A circular arc cover top (10) is fixedly provided at the end of the drainage sleeve (3).
3. A groundwater sampling drill according to claim 2, characterized in that: The drill bit (1) has a plurality of rotary drilling blocks (11) arranged in a circular array on its surface, and the thickness of the rotary drilling blocks (11) is greater than the total length of the drainage sleeve (3) and the circular arc cover top (10).
4. The underground water sampling drill bit according to claim 1, characterized in that: The water diversion hole (9) and the water guide hole (4) are arranged in the same manner, and the drill rod (7) and the water collection and diversion pipeline (8) are provided with corresponding marking scales (12). When the drill hole and the marking scales (12) on the water collection and diversion pipeline (8) are aligned with each other, the water diversion hole (9) and the dredging brush (5) are arranged opposite to each other.
5. The underground water sampling drill bit according to claim 4, characterized in that: A limiting ring sleeve (13) is arranged at the rear end of the drill rod (7), and a plurality of balls (14) are arranged on the inner wall of the limiting ring sleeve (13) for rolling engagement, and the balls (14) are in close contact with the outer wall of the water collection and diversion pipeline (8).