Portable drilling underground water sampler

Abstract

The utility model belongs to the technical field of hydrogeological exploration, and relates to a portable drilling underground water sampler, which comprises a water taking device, an outer sleeve, a filter screen base and a traction rope device, the water taking device is a cylindrical transparent plastic core-through container, the water taking device is in threaded connection with the filter screen base, and the outer sleeve is in threaded connection with the filter screen base. The outer sleeve is also in threaded connection with the filter screen base, the upper end of the outer sleeve is provided with a pull ring and an exhaust hole, the filter screen base is a group of concentric-circle-shaped internal threads, and a filter screen and a reinforcing strip are arranged between the concentric-circle-shaped internal threads, so that the durability and the integrity of the filter screen base are further improved; the traction rope device is composed of a safety buckle, a traction rope and a winding shaft. The water sampling device is used for sampling water according to the principles of double-layer sleeve, interlayer water inflow, chamber exhaust and inner cylinder water collection, and has the advantages of simple structure, convenience in operation, portability, easiness in disassembly and cleaning, high water taking success rate and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogeological exploration, and in particular relates to a portable borehole groundwater sampler. Background Art

[0002] Water quality analysis of groundwater is usually an important part of hydrogeological and engineering geological exploration. However, since the diameter of the borehole after exploration drilling is often small, it is extremely inconvenient to take groundwater samples. During normal water extraction, the water extractor cannot overcome the buoyancy of the water and immerse below the water surface due to the internal cavity of the water extractor. At present, when taking groundwater, most of them use a lower opening and a flap door device, but the flap door device often cannot be reset in time when the water extractor is lifted from the water surface, resulting in serious leakage and low water extraction efficiency.

[0003] In addition, a Chinese patent with application number CN201921096984.2 discloses a borehole groundwater sampler, which includes a sampler, a leather tube, and a vacuum device. This patent uses the principle of vacuuming the leather tube to form a negative pressure in the leather tube and pressurize the water to take samples. Although it improves the success rate of water sampling, it has the following problems: 1) inconvenience in carrying; 2) cumbersome operation; 3) the leather tube is prone to aging and damage. Once damaged, it affects its sealing, resulting in water collection failure and greatly delaying the sampling progress.

[0004] Another example is a Chinese patent application numbered CN201910289847.9, which discloses a borehole groundwater water extraction device, including a water extraction barrel, the bottom end of which is sealed, a water inlet hole is provided on the side wall of the water extraction barrel, the outside of the water extraction barrel is sleeved with an outer sleeve, and the outer sleeve slides up and down along the axis of the water extraction barrel. This patent uses the principle that the outer sleeve floats up after entering the water to expose the water inlet hole, and blocks the water inlet hole due to its own weight after exiting the water for sampling. Although the design is ingenious and the structure is simple, there are the following problems: 1) Mud or foreign matter is easily stuck between the outer sleeve and the inner sleeve. Once stuck, the outer sleeve cannot slide smoothly along the axis of the water extraction barrel. When the water extraction device is lifted out of the water, the bottom cannot be sealed in time, resulting in water extraction failure. 2) After successful water extraction, the process of collecting water samples is still relatively cumbersome, which may result in a low sampling rate. Utility Model Content

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the utility model is to provide a portable borehole groundwater sampler, which has the advantages of simple structure, easy to carry, simple operation, high sampling efficiency, etc., and solves various problems existing in the sampling process of current water samplers.

[0006] The above technical objectives of the utility model are achieved through the above technical solutions:

[0007] A portable borehole groundwater sampler comprises a water sampler, an outer sleeve, a filter screen base and a traction rope device, wherein the water sampler is a cylindrical core-through container, and the outer periphery of the lower opening of the water sampler is provided with an external thread; the outer sleeve is an inverted straight cup shape, a pull ring and an exhaust hole are provided at the upper end of the outer sleeve, and the outer periphery of the lower opening end of the outer sleeve is provided with an external thread; the filter screen base is provided with two inner and outer circles of internal threads, a filter screen is provided between the two inner and outer circles of internal threads, the base within the circle of the internal threads is completely sealed, and the outer side of the filter screen base is reinforced with a reinforcement strip; the traction device is composed of a nylon traction rope with a measuring function and a winding shaft, a threaded winding groove is provided on the axial surface of the winding shaft, the nylon traction rope is wound in the winding groove, a rotating handle for rotating the winding shaft is fixedly connected to the winding shaft, and the rotating handle is arranged in a direction perpendicular to the side wall of the winding shaft shell.

[0008] Through the above technical design, water is taken by utilizing the principle of double-layer sleeve, interlayer water inlet, chamber exhaust and inner tube water collection.

[0009] As a further improvement of the present invention, the water dispenser is a cylindrical through-core container made of a lightweight transparent plastic material with scales, the cup mouth at the upper end of the water dispenser is in the shape of a pointed mouth, and the outer periphery of the opening at the lower end of the water dispenser is provided with an external thread.

[0010] Through the above technical design, the scale lines on the container can be used to more accurately collect the amount of water sample required for the test, which has both collection and measurement functions; and the use of lightweight transparent plastic materials for production can, on the one hand, reduce the weight of the sampling device and facilitate carrying, and on the other hand, the transparent material is convenient for field workers to observe the individual physical properties of the water sample, such as color, turbidity, etc.; the pointed mouth of the water dispenser cup can be used to more efficiently and conveniently guide and collect water samples; the external thread provided on the outer periphery of the lower opening of the water dispenser can be better spliced ​​with the filter base.

[0011] As a further improvement of the utility model, the diameter and height of the outer sleeve are larger than the water dispenser, a pull ring and an exhaust hole are provided on the upper bottom sealing surface of the outer sleeve, and an external thread is provided on the outer periphery of the lower opening end of the outer sleeve.

[0012] Through the above technical design, the diameter and height are larger than the size of the water collector, which is more conducive to the formation of a water inlet layer; the setting of the pull ring is convenient for connection with the traction device; the setting of the exhaust hole is convenient for the air in the cavity to be discharged smoothly after the water collection device begins to be immersed in the water surface, thereby overcoming the buoyancy of the water and allowing the entire sampling device to sink smoothly; the external thread provided on the outer periphery of the lower end opening of the outer sleeve can be better spliced ​​with the filter base.

[0013] As a further improvement of the utility model, a filter is provided between the two inner and outer circles of the filter base, the inner circle of the inner thread base is completely sealed, and reinforcement strips are evenly arranged on the outer side of the filter base for reinforcement.

[0014] Through the above technical design, using the unique filter base structure, on the one hand, large particles of impurities in the water can be effectively filtered out, and on the other hand, the lower opening of the water collector can be sealed, thereby effectively collecting water and sampling. Secondly, the setting of the reinforcement strip enhances the durability and integrity of the filter base.

[0015] As a further improvement of the utility model, the outer sleeve and the filter screen base are both made of stainless steel.

[0016] Through the above technical design, the entire shell is made of stainless steel, on the one hand to prevent rust, and on the other hand to appropriately increase the weight of the water dispenser device, so that the water dispenser can sink smoothly.

[0017] As a further improvement of the utility model, the traction device is a nylon traction rope with a measuring function and a winding shaft with a threaded winding groove on the shaft surface.

[0018] Through the above technical design, measurement marks are set on the nylon traction rope, so that the sampling personnel can more clearly and intuitively understand the lowering depth of the sampling device, thereby improving the efficiency of water sample collection; threaded winding grooves are set on the axial surface of the winding shaft to make the traction rope orderly during the winding process, avoiding mutual entanglement and affecting the next use.

[0019] In summary, compared with the prior art, the beneficial effects of the utility model are: clever design, simple structure, easy operation, easy to carry, easy to disassemble and clean, and it also greatly improves the success rate and reliability of water sampling in limited aperture boreholes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a portable borehole groundwater sampler;

[0021] Figure 2 A schematic diagram of the structure of a portable borehole groundwater sampler;

[0022] Figure 3 A schematic diagram of the outer sleeve structure of a portable borehole groundwater sampler;

[0023] Figure 4 A schematic diagram of the filter base structure of a portable borehole groundwater sampler;

[0024] Figure 5A bottom view of a filter screen base of a portable borehole groundwater sampler;

[0025] Figure 6 The present invention is a schematic diagram of the structure of a traction device of a portable borehole groundwater sampler.

[0026] In the figure, 1-water dispenser, 11-external thread 1, 12-volume scale mark, 13-pointed nozzle, 2-outer sleeve, 21-external thread 2, 22-pull ring, 23-vent, 3-filter base, 31-internal thread 1, 32-internal thread 2, 33-filter, 34-sealing base, 35-reinforcement strip, 4-safety hook, 5-traction rope, 51-length scale mark, 6-winding shaft, 61-winding groove, 62-turning handle. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] Reference Figure 1-6 A portable borehole groundwater sampler includes a water sampler 1, an outer sleeve 2, a filter screen base 3, a safety hook 4, a traction rope 5, and a winding shaft 6. The outer periphery of the lower end of the water sampler 1 is provided with an external thread 11, which is threadedly connected to an internal thread 31 of the filter screen base 3. The outer wall of the water sampler 1 is provided with a volume scale mark 12, which is convenient for quantification of water samples taken in the field. The cup mouth of the water sampler 1 is provided with a pointed mouth 13, which is conducive to water sample collection. The bottom surface of the closed end of the outer sleeve 2 is provided with a pull ring 22 and an exhaust hole 23. The outer periphery of the open end of the outer sleeve 2 is provided with an external thread 21, which is threadedly connected to an internal thread 32 of the filter screen base 3. Further, the traction rope 5 is connected to the pull ring 22 on the bottom surface of the closed end of the outer sleeve 2 by the safety hook 4. The cross section of the winding shaft 6 is U-shaped, a winding groove 61 is provided on the shaft surface, a rotating handle 62 is provided on the side wall of the winding shaft 6, the traction rope 5 is wound in the winding groove 61, and length scale marks 51 are provided on the traction rope 5 every 1m.

[0029] See also Figure 2 , 4 The water dispenser 1 is provided with an outer thread 11 on the outer periphery of the lower end, a volume scale mark 12 on the side wall, and a cylindrical transparent core container with a pointed mouth 13 at the cup mouth. Through the above technical solution design, the outer thread 11 can be conveniently connected with the inner thread 31 on the filter base 3, so that the sealing base 34 becomes the bottom of the water dispenser 1, thereby realizing the water collection function. The outer thread 11 and the inner thread 31 are adapted. The pointed mouth 13 of the cup mouth is convenient for diversion and collection of water samples, the volume scale mark 12 is convenient for quantification of water samples, and the transparent plastic material is convenient for preliminary observation of the state of water samples and easy to record.

[0030] See also Figure 3 , 4 The outer sleeve 2 is a cylindrical stainless steel sleeve with a pull ring 22 and an exhaust hole 23 on the bottom of the closed end and an external thread 21 on the outer periphery of the open end. Through the above technical solution design, the external thread 21 can be conveniently connected with the external thread 2 32 on the filter screen base 3, so that the outer sleeve 2 and the filter screen base 3 form a whole. The external thread 21 is adapted to the external thread 2 32. The exhaust hole 23 is provided to facilitate the smooth discharge of air in the cavity of the water collection device after it begins to be immersed in the water surface, and the sampler overcomes the buoyancy and sinks smoothly.

[0031] The outer sleeve 2 and the filter base 3 are both made of stainless steel. Through the above technical solution design, the entire shell is made of stainless steel, on the one hand to prevent rust, on the other hand to appropriately increase the weight of the water dispenser device, thereby allowing the water dispenser to sink smoothly.

[0032] See also Figure 1 , 4 5. The inner diameter and height of the sampler 1 are smaller than those of the outer sleeve 2. A filter screen 33 is arranged between the inner thread 1 31 and the inner thread 2 32. Reinforcement strips 35 are evenly arranged between the closed base 34 and the outer ring of the filter screen base 3. The reinforcement strips 35 are located on the outside of the filter screen 33. The above technical solution is conducive to forming a water inlet interlayer. At the same time, the setting of the filter screen 33 is conducive to filtering out large particles of impurities in the water, and the setting of the reinforcement strips 35 further enhances the durability and integrity of the filter screen base 3.

[0033] See also Figure 6 The traction device includes a safety hook 4, a traction rope 5, and a winding shaft 6. The traction rope 5 is provided with a length scale mark 51 every 1m. The cross section of the winding shaft 6 is U-shaped, and a winding groove 61 is provided on the shaft surface. A rotating handle 62 is provided on the side wall of the winding shaft 6, and the traction rope 5 is wound in the winding groove 61. The above technical solution design is conducive to improving the efficiency of water sample collection. At the same time, the threaded winding groove can make the traction rope orderly during the winding process to avoid mutual entanglement and affect the next use.

[0034] The working principle of the utility model:

[0035] Step 1: After drilling, the sampling personnel will first assemble the water sample collector. First, the external thread 11 of the water collector 1 is rotatably connected to the internal thread 31 of the filter base 3, and then the external thread 21 of the outer sleeve 2 is rotatably connected to the internal thread 2 32 of the filter base 3. After the connection is firm, the safety hook 4 on the traction rope 5 is finally connected to the pull ring 22 on the outer sleeve 2.

[0036] Step 2: After the above assembly steps are completed, the whole assembled water intake device is lowered using a traction rope 5 with a length scale mark 51 according to the depth of the groundwater level.

[0037] Step three: After the entire assembled water-taking device is completely lowered below the stable underground water level, it is left to stand for about 30 seconds and then slowly lifted out of the water. The water-taking task is now complete.

[0038] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A portable borehole groundwater sampler, comprising a water sampler (1), an outer sleeve (2), a filter base (3), a traction rope (5), and a winding shaft (6), characterized in that: A water dispenser (1), wherein the outer periphery of the lower end of the water dispenser (1) is provided with an external thread (11), the side wall is provided with a volume scale mark (12), and the cup mouth is arranged in a pointed mouth (13); An outer sleeve (2), wherein a pull ring (22) and an exhaust hole (23) are provided on the bottom surface of the closed end of the outer sleeve (2), and an outer thread (21) is provided on the periphery of the open end of the outer sleeve (2); A filter screen base (3), wherein a filter screen (33) is arranged between the first internal thread (31) and the second internal thread (32) of the filter screen base (3), and reinforcing strips (35) are evenly arranged between the closed base (34) of the filter screen base (3) and the outer ring of the filter screen base (3), and the reinforcing strips (35) are located on the outside of the filter screen (33); A traction rope (5), wherein the traction rope (5) is provided with length scale marks (51) every 1 m; The winding shaft (6) has a U-shaped cross section, a winding groove (61) is arranged on the axial surface, and a rotating handle (62) is arranged on the side wall of the winding shaft (6).

2. The borehole groundwater sampler according to claim 1, characterized in that: The water extractor (1) is a cylindrical transparent light plastic core container.

3. The borehole groundwater sampler according to claim 1, characterized in that: The outer sleeve (2) is made of cylindrical stainless steel.

4. The borehole groundwater sampler according to claim 1, characterized in that: The filter screen base (3) is made of concentric circular stainless steel.

5. The borehole groundwater sampler according to claim 1, characterized in that: The water dispenser (1), the outer sleeve (2) and the filter screen base (3) are all connected via threads and are detachable.

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