Engineering investigation drilling water sample taking device

Abstract

The utility model relates to a drilling water sampling device for engineering investigation. The drilling water sampling device comprises a sampling tube outer sleeve, a sampling tube piston core, a sampling tube piston rod, a detachable water sampling slim tube, a filtering assembly and a piston rod pressing handle, the detachable water taking thin pipe can be replaced according to the water level depth of a drill hole, the whole set of equipment does not need to be replaced, operation is more convenient, the filtering assembly connected with the water taking thin pipe can filter water sample impurities on the outer side of the filtering net, and interference of the impurities on a water sample and experimental data can be effectively avoided. The utility model has a simple and reasonable structure, is convenient and reliable to use, and improves the working efficiency of engineering investigators.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling water sample collection, in particular to a water sample collection device for engineering investigation drilling. Background Technique

[0002] During the process of engineering investigation, the study of groundwater in the engineering area is a key link, and drilling water sample collection is an important way to obtain groundwater.

[0003] In the past process of drilling water sample collection in engineering investigation, due to the small diameter of the drilling hole and the uneven drilling water level, it is difficult to collect water samples well. In addition, a large amount of impurities are mixed in the water samples collected by the previous water collection devices, which interfere with the experimental data of the water samples. Therefore, how to solve the sampling difficulty problems caused by the small diameter of the drilling hole and the uneven drilling water level, as well as the problem of a large amount of impurities mixed in the water samples, is the focus and difficulty of current research. Content of the Utility Model

[0004] Aiming at the defects existing in the prior art, the utility model provides a water sample collection device for engineering investigation drilling, which can effectively solve the above problems.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] The utility model provides a water sample collection device for engineering investigation drilling, including a sampling tube outer sleeve (1), a sampling tube piston core (2), a sampling tube piston rod (3), a detachable water intake thin tube (4), a filtering component (5) and a piston rod pressing handle (6);

[0007] The sampling tube outer sleeve (1) is vertically arranged, a screw hole (12) is arranged at the bottom end of the sampling tube outer sleeve (1), and a water inlet / outlet (13) of the sampling tube outer sleeve is formed in the hole of the screw hole (12) at the bottom end of the sampling tube outer wall; the filtering component (5) is threadedly installed in the screw hole (12) at the bottom end of the sampling tube outer wall; a water inlet / outlet (7) of the filtering component is arranged at the bottom of the filtering component (5); the water inlet / outlet (7) of the filtering component is detachably fixed to one end of the detachable water intake thin tube (4) through a buckle;

[0008] The inside of the sampling tube outer sleeve (1) is a sampling tube inner wall (9), the sampling tube piston core (2) is closely attached and installed on the sampling tube inner wall (9); the lower end of the sampling tube piston rod (3) is connected to the sampling tube piston core (2), the top of the sampling tube piston rod (3) passes through the inner cavity of the sampling tube outer sleeve (1), and the piston rod pressing handle (6) is installed at the top of the sampling tube piston rod (3); by pushing and pulling the piston rod pressing handle (6) and the sampling tube piston rod (3), the sampling tube piston core (2) is driven to move up and down inside the sampling tube outer sleeve (1).

[0009] Preferably, the filtering component (5) includes a filter screen (11), a filter screen placement slot (14), and an impurity storage chamber (15); the filter screen placement slot (14) is arranged at a position near the screw hole (12) at the bottom end of the outer wall of the sampling tube at the top of the filtering component (5), and the filter screen (11) is installed in the slot of the filter screen placement slot (14); a cavity between the water inlet / outlet (7) of the filtering component (5) and the filter screen (11) forms the impurity storage chamber (15).

[0010] Preferably, a filter screen sealing ring (18) is arranged on the upper part of the filter screen (11).

[0011] Preferably, a hand-held groove (8) for easy hand-holding is arranged on the upper part of the sampling tube outer sleeve (1).

[0012] Preferably, a hand-held groove coating (10) is arranged outside the hand-held groove (8).

[0013] Preferably, the piston rod pressing handle (6) is provided with a threaded hole (16); the top of the sampling tube piston rod (3) is threadedly connected to the threaded hole (16) of the piston rod pressing handle (6).

[0014] Preferably, a capacity scale line (17) is arranged on the outer wall of the sampling tube outer sleeve (1).

[0015] The water sampling device for engineering exploration boreholes provided by the present utility model has the following advantages:

[0016] It has a simple structure, is easy to operate, convenient for storage, and its unique filtering device can reduce the extraction rate of impurities, making the experimental data of the sampled water more accurate. Its detachable sampling thin tube can improve the repeated utilization rate of the overall sampling device and reduce the sampling cost. By using the water sampling thin tube to take water, it can be applied to boreholes with a smaller borehole diameter, facilitating sampling of small-borehole boreholes and improving the sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present utility model;

[0018] Figure 2 is the schematic diagram of the front dissection structure of the present utility model;

[0019] Figure 3 is the schematic diagram of the front dissection structure of the filtering component of the present utility model;

[0020] Figure 4 is the schematic diagram of the outer side structure of the filter screen of the present utility model

[0021] In the figure:

[0022] 1. Sampling tube outer sleeve; 2. Sampling tube piston core; 3. Sampling tube piston rod; 4. Removable water intake thin tube; 5. Filter assembly; 6. Piston rod pressing handle; 7. Filter assembly water inlet and outlet; 8. Hand-held groove; 9. Inner wall of sampling tube; 10. Hand-held groove coating; 11. Filter screen; 12. Screw hole at the bottom of the outer wall of the sampling tube; 13. Sampling tube outer sleeve water inlet and outlet; 14. Filter screen placement card slot; 15. Impurity storage room; 16. Threaded hole; 17. Capacity scale line; 18. Filter screen sealing ring. Detailed implementation manners

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] As Figures 1 to 4 shown, the present utility model provides an engineering investigation borehole water sampling device, including a sampling tube outer sleeve 1, a sampling tube piston core 2, a sampling tube piston rod 3, a removable water intake thin tube 4, a filter assembly 5 and a piston rod pressing handle 6;

[0025] The sampling tube outer sleeve 1 is vertically arranged, and a screw hole 12 at the bottom of the outer wall of the sampling tube is provided at the bottom of the sampling tube outer sleeve 1. The inner part of the screw hole 12 at the bottom of the outer wall of the sampling tube forms a sampling tube outer sleeve water inlet and outlet 13; the filter assembly 5 is threadedly installed in the screw hole 12 at the bottom of the outer wall of the sampling tube; a filter assembly water inlet and outlet 7 is provided at the bottom of the filter assembly 5; the filter assembly water inlet and outlet 7 is detachably fixed to one end of the removable water intake thin tube 4 through a buckle;

[0026] The filter assembly 5 includes a filter screen 11, a filter screen placement card slot 14 and an impurity storage room 15; a filter screen placement card slot 14 is provided at the top of the filter assembly 5 near the screw hole 12 at the bottom of the outer wall of the sampling tube, and the filter screen 11 is installed in the slot of the filter screen placement card slot 14; the filter screen 11 is placed flat in the inner placement card slot of the filter assembly and corresponds to the placement card slot one by one. A filter screen sealing ring 18 is provided on the upper part of the filter screen 11; the cavity between the filter assembly water inlet and outlet 7 and the filter screen 11 of the filter assembly 5 forms an impurity storage room 15. During implementation, water will enter the filter assembly 5 through the removable water intake thin tube 4. Through the isolation of the filter screen 11, impurities can be effectively placed in the impurity storage room 15. Specifically, when pumping water, the filter screen 11 can filter the water sample impurities outside the filter screen 11 and store them in the impurity storage room 15.

[0027] The upper part of the sampling tube outer sleeve 1 is provided with a hand-held groove 8 for easy holding. A hand-held groove coating 10 is provided outside the hand-held groove 8.

[0028] The interior of the sampling tube outer sleeve 1 is the inner wall 9 of the sampling tube, and the inner wall 9 of the sampling tube is closely attached to the sampling tube piston core 2; the sampling tube piston rod 3 is vertically arranged inside the sampling tube outer sleeve 1, the lower end of the sampling tube piston rod 3 is connected to the sampling tube piston core 2, and the top of the sampling tube piston rod 3 penetrates out of the inner cavity of the sampling tube outer sleeve 1, and a piston rod pressing handle 6 is installed at the top of the sampling tube piston rod 3;

[0029] Specifically, the top and bottom of the sampling tube piston rod 3 are designed with threads, and the piston rod pressing handle 6 is provided with a threaded hole 16; the top of the sampling tube piston rod 3 is threadedly connected to the threaded hole 16 of the piston rod pressing handle 6. The bottom end of the sampling tube piston rod 3 is threadedly connected to the sampling tube piston core 2. The threaded connection facilitates disassembly and storage. By pushing and pulling the piston rod pressing handle 6 and the sampling tube piston rod 3, the sampling tube piston core 2 is driven to move up and down inside the sampling tube outer sleeve 1.

[0030] In this application, the sampling tube piston core 2 is made of rubber. Rubber has strong flexibility and ductility. Using this material can make the sampling tube piston core 2 closely combine with the tube wall during the up and down movement in the sampling tube, which can improve the efficiency of water sampling;

[0031] The outer wall of the sampling tube outer sleeve 1 is provided with a capacity scale line 17.

[0032] In this embodiment, first, the sampling tube piston rod 3 is pressed downward (reset) to the bottom of the sampling tube, and the detachable water intake thin tube 4 is inserted into the designated drill hole to keep it upright. By pulling up the sampling tube piston rod 3 through the piston rod pressing handle 6, the water in the drill hole will pass through the detachable water intake thin tube 4, flow through the filter assembly 5 and then enter the inner cavity of the sampling tube outer sleeve 1. During this process, the filter assembly 5 filters out impurities and foreign objects and stores them in the impurity storage chamber 15, and the water sample will enter the inside of the sampling tube outer sleeve 1. At this time, it can be judged whether the water sample is taken sufficiently according to the capacity scale line 17 on the outer wall of the sampling tube outer sleeve 1. When the water sample reaches the ideal volume, the sampling device can be pulled out of the drill hole at this time. At this time, the filter assembly 5 needs to be rotated and removed from the water inlet and outlet 13 of the sampling tube outer sleeve, and finally the water sample is placed in the corresponding container.

[0033] The filter assembly 5 of the sampling device can effectively isolate impurities outside the filter screen 11, which can effectively avoid the interference of impurities on the water sample and experimental data; the detachable water intake thin tube 4 can be replaced according to the depth of the water level in the drill hole, and there is no need to replace the whole set of equipment, which is more convenient to operate. It can effectively avoid replacing the whole device due to the too deep water level and unable to sample, reducing the sampling cost.

[0034] Compared with the existing technology, the advantages of the present utility model are:

[0035] It has a simple structure, is easy to operate and convenient to store. Moreover, its unique filtering device can reduce the extraction rate of impurities, making the experimental data of the collected water samples more accurate. Its detachable sampling capillary can improve the repeated utilization rate of the overall sampling device and reduce the sampling cost. By using the water intake capillary to draw water, it is applicable to boreholes with a small borehole diameter, facilitating sampling of small-boreholes and improving the sampling efficiency.

[0036] The above specific embodiments are merely a relatively preferred embodiment of the present utility model, rather than a limitation thereof. It should be noted that for those of ordinary skill in the art in this technical field, several modifications and improvements can still be made within the spirit and principles of the present utility model, and these modifications and improvements should also be regarded as the protection scope of the present utility model.

Claims

1. A water sampling device for drilling water for engineering survey, characterized in that: It comprises a sampling tube outer sleeve (1), a sampling tube piston core (2), a sampling tube piston rod (3), a detachable water collection tube (4), a filter assembly (5) and a piston rod pressing handle (6); The outer sleeve (1) of the sampling tube is arranged vertically, and a screw hole (12) at the bottom of the outer wall of the sampling tube is arranged at the bottom of the outer sleeve (1), and a water inlet and outlet (13) of the outer sleeve of the sampling tube is formed in the hole of the screw hole (12) at the bottom of the outer wall of the sampling tube; the filter assembly (5) is threadedly mounted in the screw hole (12) at the bottom of the outer wall of the sampling tube; a filter assembly water inlet and outlet (7) is arranged at the bottom of the filter assembly (5); the filter assembly water inlet and outlet (7) are detachably fixed to one end of the detachable water intake capillary (4) by means of a buckle; The interior of the sampling tube outer sleeve (1) is the sampling tube inner wall (9), and the sampling tube inner wall (9) is tightly fitted to install the sampling tube piston core (2); the lower end of the sampling tube piston rod (3) is connected to the sampling tube piston core (2), the top of the sampling tube piston rod (3) passes through the inner cavity of the sampling tube outer sleeve (1), and the piston rod pressing handle (6) is installed on the top of the sampling tube piston rod (3); by pushing and pulling the piston rod pressing handle (6) and the sampling tube piston rod (3), the sampling tube piston core (2) is driven to move up and down inside the sampling tube outer sleeve (1).

2. The engineering survey drilling water sampling device according to claim 1 is characterized in that: The filter assembly (5) comprises a filter screen (11), a filter screen placement slot (14) and an impurity storage room (15); the filter screen placement slot (14) is arranged at a position close to the screw hole (12) at the bottom end of the outer wall of the sampling tube at the top of the filter assembly (5), and the filter screen (11) is installed in the slot of the filter screen placement slot (14); the cavity between the filter assembly water inlet and outlet (7) of the filter assembly (5) and the filter screen (11) forms the impurity storage room (15).

3. The engineering survey drilling water sampling device according to claim 2, characterized in that: A filter sealing ring (18) is provided on the upper part of the filter (11).

4. The engineering survey drilling water sampling device according to claim 1, characterized in that: The upper portion of the outer sleeve (1) of the sampling tube is provided with a hand-holding groove (8) for easy hand-holding.

5. The engineering survey drilling water sampling device according to claim 4, characterized in that: The outside of the hand-holding groove (8) is provided with a hand-holding groove coating (10).

6. The engineering survey drilling water sampling device according to claim 1, characterized in that: The piston rod pressing handle (6) is provided with a threaded hole (16); the top of the sampling tube piston rod (3) is threadedly connected to the threaded hole (16) of the piston rod pressing handle (6).

7. The engineering survey drilling water sampling device according to claim 1, characterized in that: The outer wall of the sampling tube outer sleeve (1) is provided with capacity scale lines (17).

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