Accurate and convenient drilling depth-keeping water sampling device and use method thereof

Abstract

The invention discloses an accurate and convenient drilling depth-keeping water sampling device, and relates to the technical field of engineering investigation and groundwater resource investigation. The device comprises a sampling structure, a handle structure and a counterweight part, the sampling structure comprises a sampling bottle with upper and lower openings; movable cover plates are movably mounted on the left and right sides of the upper fixed shaft and the lower fixed shaft; the movable cover plate connected with the upper fixing shaft is located above the upper fixing cover plate, and the movable cover plate connected with the lower fixing shaft is located above the lower fixing cover plate. The operability, the accuracy and the working efficiency of the water sampling device are improved, and the water sampling device can be popularized and applied to various investigation and water resource investigation projects. The invention further relates to a using method of the accurate and convenient drilling depth-keeping water sampling device.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering investigation and underground water resource investigation, and more specifically, it is an accurate and convenient device for taking groundwater samples at a fixed depth. The present invention also relates to a method for using such an accurate and convenient device for taking groundwater samples at a fixed depth. Background Art

[0002] During the process of engineering investigation or underground water resource investigation, it is often necessary to take groundwater samples at a certain depth for water corrosivity analysis or water quality analysis.

[0003] The existing fixed-depth sampling devices generally have a relatively complex structure, which is not convenient for production; or the airtightness is insufficient, and the top cannot be sealed, resulting in the sampling bottle being mixed with the upper borehole water during the rising process, affecting the accuracy of the groundwater composition and content; or the operation is relatively complex and not convenient to use.

[0004] In order to obtain more accurate groundwater quality data, the device for taking groundwater samples at a fixed depth must reduce its production cost and manufacturing difficulty, improve its operability and accuracy, and be widely applied to various investigation and water resource investigation projects.

[0005] Therefore, it is necessary to develop an accurate and convenient device for taking groundwater samples at a fixed depth. Summary of the Invention

[0006] The first object of the present invention is to overcome the deficiencies of the above background art, and provide an accurate and convenient device for taking groundwater samples at a fixed depth.

[0007] The second object of the present invention is to provide a method for using such an accurate and convenient device for taking groundwater samples at a fixed depth.

[0008] In order to achieve the above first object, the technical solution of the present invention is: an accurate and convenient device for taking groundwater samples at a fixed depth, characterized in that: it includes a sampling structure, a handle structure and a counterweight; the sampling structure includes a sampling bottle with upper and lower openings; on the left and right inner walls of the upper mouth of the sampling bottle, upper fixed covers are provided, the front and rear inner walls of the upper mouth are connected by an upper fixed shaft, on the left and right inner walls of the lower mouth, lower fixed covers are provided, and the front and rear inner walls of the lower mouth are connected by a lower fixed shaft;

[0009] On the left and right sides of the upper fixed shaft and the lower fixed shaft, movable covers are movably installed;

[0010] The movable cover connected to the upper fixed shaft is located above the upper fixed cover, and the movable cover connected to the lower fixed shaft is located above the lower fixed cover;

[0011] The handle structure is connected to the upper fixed shaft;

[0012] The counterweight is connected to the lower fixed shaft.

[0013] In the above technical solution, the handle structure includes an upper fixed loop and a measuring rope, and the measuring rope is connected to the upper fixed shaft through the upper fixed loop.

[0014] In the above technical solution, the counterweight includes a lower fixed loop and a counterweight, and the counterweight is connected to the lower fixed shaft through the lower fixed loop.

[0015] In the above technical solution, soft pads are provided on the upper surfaces of the upper fixed cover plate and the lower fixed cover plate.

[0016] In order to achieve the above first object, the technical solution of the present invention is: a method for using an accurate and convenient drilling depth-determining water sampling device, which is characterized by including the following steps:

[0017] Step 1: Connect the measuring rope to the upper fixed loop on the upper fixed shaft;

[0018] Step 2: Connect the counterweight to the lower fixed loop on the lower fixed shaft;

[0019] Step 3: Hold the measuring rope and slowly lower the sampling bottle down from the drill hole. Stop when reaching the fixed depth according to the scale of the measuring rope; during the descent of the sampling bottle, the movable cover plate tilts upward and opens with the upper fixed shaft and the lower fixed shaft as axes under the action of water; water enters the sampling bottle from the space between the movable cover plate at the lower bottle mouth of the sampling bottle and the lower fixed cover plate, and then flows out of the sampling bottle from the space between the movable cover plate at the upper bottle mouth and the upper fixed cover plate;

[0020] Step 4: When reaching the fixed depth, hold the measuring rope and the sampling bottle stops descending;

[0021] The movable cover plate closes under the action of gravity; the movable cover plate at the lower bottle mouth of the sampling bottle fits with the lower fixed cover plate, and the movable cover plate at the upper bottle mouth fits with the upper fixed cover plate; the sampling bottle is filled with water samples at the fixed depth;

[0022] Step 5: Lift the sampling bottle upward through the measuring rope, and the movable cover plate is in close contact with the soft pads of the lower fixed cover plate and the upper fixed cover plate under the action of water and gravity;

[0023] Step 6: Lift the sampling bottle out of the hole opening, and the water sample in the sampling bottle is the water sample at the fixed depth.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1) The existing depth-fixed sampling devices are either too complex in structure to be convenient for production, or have insufficient tightness and cannot be sealed at the top, resulting in the mixing of the upper borehole water during the ascent of the sampling bottle, affecting the accuracy of the composition and content of groundwater. Or they are inconvenient to operate and require multiple people to cooperate. Compared with the existing technologies, the present invention comprehensively considers all the disadvantages of different existing technical solutions, comprehensively solves all the above-mentioned problems, reduces the production cost and manufacturing difficulty, improves its operability, accuracy and working efficiency, and is conducive to popularization and application in various exploration and water resource investigation projects.

[0026] 2) Soft pads are provided on the upper surfaces of the upper fixed cover plate and the lower fixed cover plate of the present invention. During the ascent of the sampling bottle, the movable cover plate closely adheres to the soft pads, which can ensure the sealing inside the sampling bottle and prevent the water sample in the sampling bottle from being contaminated.

[0027] 3) The movable cover plate of the present invention rotates around the upper fixed shaft and the lower fixed shaft. Due to the action of water, it can be opened when the sampling bottle descends and closed when the sampling bottle ascends. The structure is simple, convenient for production, reduces the production cost and manufacturing difficulty, and improves its operability, accuracy and working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the present invention.

[0029] Figure 2 is a cross-sectional view taken along line A-A in Figure 1 when the movable cover plate is open.

[0030] Figure 3 is a cross-sectional view taken along line A-A in Figure 1 when the movable cover plate is in close contact with the soft pads.

[0031] Among them, 100 - sampling structure, 110 - sampling bottle, 120 - upper fixed cover plate, 130 - upper fixed shaft, 140 - lower fixed cover plate, 150 - lower fixed shaft, 160 - movable cover plate, 170 - soft pad, 200 - handle structure, 210 - upper fixed ring buckle, 220 - measuring rope, 300 - counterweight, 310 - lower fixed ring buckle, 320 - counterweight. DETAILED DESCRIPTION OF THE INVENTION

[0032] The implementation of the present invention will be described in detail below with reference to the drawings. However, they do not constitute a limitation to the present invention and are only for illustration purposes. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0033] Referring to the attached drawings, it can be seen that: an accurate and convenient device for taking water samples at a fixed depth by drilling, which is characterized in that: it includes a sampling structure 100, a handle structure 200 and a counterweight 300; the sampling structure 100 includes a sampling bottle 110 with upper and lower openings; on the left and right inner walls of the upper mouth of the sampling bottle 110, upper fixed covers 120 are provided, the front and rear inner walls of the upper mouth are connected by an upper fixed shaft 130, on the left and right inner walls of the lower mouth, lower fixed covers 140 are provided, and the front and rear inner walls of the lower mouth are connected by a lower fixed shaft 150;

[0034] On both the left and right sides of the upper fixed shaft 130 and the lower fixed shaft 150, movable covers 160 are movably installed;

[0035] The movable cover 160 connected to the upper fixed shaft 130 is located above the upper fixed cover 120, and the movable cover 160 connected to the lower fixed shaft 150 is located above the lower fixed cover 140;

[0036] The handle structure 200 is connected to the upper fixed shaft 130;

[0037] The counterweight 300 is connected to the lower fixed shaft 150.

[0038] The handle structure 200 includes an upper fixed loop 210 and a measuring rope 220, and the measuring rope 220 is connected to the upper fixed shaft 130 through the upper fixed loop 210; on the one hand, the sinking depth of the sampling structure 100 can be read according to the scale of the measuring rope 220; on the other hand, the fixed handle structure 200 can also improve the stability of the sampling bottle.

[0039] The counterweight 300 includes a lower fixed loop 310 and a counterweight 320, and the counterweight 320 is connected to the lower fixed shaft 150 through the lower fixed loop 310; the counterweight 320 is made of a material with a relatively large density, at least greater than the density of water; a fixed hook is provided on the counterweight 320, and the fixed hook is connected to the lower fixed loop 310 on the lower fixed shaft 150 to increase the stability when the sampling bottle 110 rises and falls.

[0040] Soft pads 170 are provided on the upper surfaces of the upper fixed cover 120 and the lower fixed cover 140; the soft pads 170 are made of soft rubber materials.

[0041] A method for using an accurate and convenient device for taking water samples at a fixed depth by drilling, which is characterized in that: it includes the following steps:

[0042] Step 1: Connect the measuring rope 220 to the upper fixed loop 210 on the upper fixed shaft 130;

[0043] Step 2: Connect the counterweight 320 to the lower fixed loop 310 on the lower fixed shaft 150;

[0044] Step 3: As Figure 2As shown, hold the sounding line 220 and slowly lower the sampling bottle 110 from the drill hole. Stop when reaching the specified depth according to the scale of the sounding line 220. During the descent of the sampling bottle 110, under the action of water, the movable cover plate 160 tilts upward and opens with the upper fixed shaft 130 and the lower fixed shaft 150 as the axes. Water enters the sampling bottle 110 from the space between the movable cover plate 160 at the lower bottle mouth of the sampling bottle 110 and the lower fixed cover plate 140, and then flows out of the sampling bottle 110 from the space between the movable cover plate 160 at the upper bottle mouth and the upper fixed cover plate 120.

[0045] Step 4: As Figure 3 shown, when reaching the specified depth, hold the sounding line 220 and the sampling bottle 110 stops descending. The movable cover plate 160 closes under the action of gravity. The movable cover plate 160 at the lower bottle mouth of the sampling bottle 110 fits with the lower fixed cover plate 140, and the movable cover plate 160 at the upper bottle mouth fits with the upper fixed cover plate 120. The sampling bottle 110 is filled with water samples at the specified depth.

[0046] Step 5: Lift the sampling bottle 110 upward through the sounding line 220. The movable cover plate 160 is in close contact with the soft pads 170 of the lower fixed cover plate 140 and the upper fixed cover plate 120 under the action of water and gravity, ensuring that the water samples will not be mixed during the ascent.

[0047] Step 6: Lift the sampling bottle 110 out of the hole opening, and the water sample in the sampling bottle 110 is the water sample at the specified depth.

[0048] There are no special requirements for the materials of the present invention. There are no special requirements for the outer diameter and thickness of the sampling bottle 110, which should be flexibly selected according to the drill hole diameter and the material of the sampling bottle 110 respectively.

[0049] Other parts not described belong to the prior art.

Claims

1. An accurate and convenient device for drilling to a fixed depth to collect water samples, characterized in that: It includes a sampling structure (100), a handle structure (200) and a counterweight (300); the sampling structure (100) includes a sampling bottle (110) with upper and lower openings; on the left and right inner walls of the upper opening of the sampling bottle (110), upper fixed covers (120) are provided, on the front and back inner walls of the upper opening are connected by an upper fixed shaft (130), on the left and right inner walls of the lower opening are provided with lower fixed covers (140), and on the front and back inner walls of the lower opening are connected by a lower fixed shaft (150); On both the left and right sides of the upper fixed shaft (130) and the lower fixed shaft (150), movable covers (160) are movably installed; The movable cover (160) connected to the upper fixed shaft (130) is located above the upper fixed cover (120), and the movable cover (160) connected to the lower fixed shaft (150) is located above the lower fixed cover (140); The handle structure (200) is connected to the upper fixed shaft (130); The counterweight (300) is connected to the lower fixed shaft (150).

2. The accurate and convenient drilling depth determination water sampling device according to claim 1, wherein: The handle structure (200) includes an upper fixed ring buckle (210) and a measuring rope (220), and the measuring rope (220) is connected to the upper fixed shaft (130) through the upper fixed ring buckle (210).

3. An accurate and convenient device for drilling to a fixed depth to collect water samples according to claim 2, characterized in that: The counterweight (300) includes a lower fixed ring buckle (310) and a counterweight (320), and the counterweight (320) is connected to the lower fixed shaft (150) through the lower fixed ring buckle (310).

4. An accurate and convenient drilling depth-fixed water sampling device according to claim 3, characterized in that: On the upper surfaces of the upper fixed cover (120) and the lower fixed cover (140), soft pads (170) are provided.

5. The usage method of an accurate and convenient drilling depth-fixed water sampling device according to claim 4, characterized in that: It includes the following steps: Step 1: Connect the measuring rope (220) to the upper fixed ring buckle (210) on the upper fixed shaft (130); Step 2: Connect the counterweight (320) to the lower fixed ring buckle (310) on the lower fixed shaft (150); Step 3: Hold the measuring rope (220) and slowly lower the sampling bottle (110) downwards from the drill hole. According to the scale of the measuring rope (220), stop when reaching the fixed depth; during the descent of the sampling bottle (110), under the action of water, the movable cover (160) takes the upper fixed shaft (130) and the lower fixed shaft (150) as axes and tilts upwards to open; water enters the sampling bottle (110) from the space between the movable cover (160) of the lower bottle mouth of the sampling bottle (110) and the lower fixed cover (140), and then flows out of the sampling bottle (110) from the space between the movable cover (160) of the upper bottle mouth and the upper fixed cover (120); Step 4: When reaching the fixed depth, hold the measuring rope (220) and the sampling bottle (110) stops descending; the movable cover (160) closes under the action of gravity; the movable cover (160) of the lower bottle mouth of the sampling bottle (110) fits with the lower fixed cover (140), and the movable cover (160) of the upper bottle mouth fits with the upper fixed cover (120); the sampling bottle (110) is filled with the fixed-depth water sample; Step 5: Lift the sampling bottle (110) upwards through the measuring rope (220), and the movable cover (160) closely contacts the soft pads of the lower fixed cover (140) and the upper fixed cover (120) under the action of water and gravity; Step 6: The sampling bottle (110) is lifted out of the orifice, and the water sample in the sampling bottle (110) is the water sample at a fixed depth.

Images