A water sample collection device and its usage method

Abstract

The present invention provides a water sample collection device, which includes a telescopic rod and a water sampler. The telescopic rod includes a plurality of sleeves connected in sequence. A positioning ring is provided on the outer wall of each sleeve. A turntable is further provided at the end of the telescopic rod. A suspension line is wound around the turntable. One end of the suspension line sequentially passes through all the positioning rings and is connected to the water sampler. The water sampler includes a cylindrical container. A water inlet pipe extending into the container is opened at the bottom of the container. A valve seat is provided at the top of the water inlet pipe. A wire mesh is connected to the top of the valve seat. A sphere is provided between the valve seat and the wire mesh. As the water level in the container changes, the sphere opens and closes the water inlet pipe. The present invention also provides a method for using the foregoing water sample collection device. The beneficial effect of the present invention is that the water sampler is connected to the suspension line in the telescopic rod. The suspension line can be wound and released by manually driving the turntable and the length of the telescopic rod can be adjusted to change the position of the water sampler, overcoming the inconvenience of collecting water samples offshore and achieving the effect of independently collecting water at any shore distance.

Description

Technical Field

[0001] The present invention relates to the technical field of water environment monitoring, and particularly relates to a water sample collection device and a using method thereof. Background Art

[0002] In the water environment monitoring work of environmental monitoring stations at all levels and the research work of environmental protection scientific research departments, a water quality sampler is one of the essential instruments. A water quality sampler is a special water environment monitoring instrument used for surface water and sewage sampling, monitoring water sources, conducting pollution source investigations and total quantity control. Staff can collect mixed water samples at different equal time intervals according to user requirements, meeting the sampling requirements in the "Technical Specifications for Surface Water and Sewage Monitoring" issued by the State Environmental Protection Administration.

[0003] At present, manual monitoring is the main monitoring method for water environment monitoring in China, that is, relying on a large number of on-site samplings and then conducting manual water quality determination in the laboratory. This method has the advantages of high flexibility and wide operable range. When working in a vast water area, it is necessary to drive a boat or a speedboat and other watercraft into the sampling area and then take samples manually. Due to the lack of efficient sampling tools, the operation cost of this method is high and the efficiency is low. Moreover, due to diverse sampling environments, manual sampling is not convenient.

[0004] When completing water condition understanding work such as water quality analysis or water biology analysis, it is first necessary to complete the collection of representative water samples. Usually, it is stipulated to collect water samples at 0.5 m and 1.0 m underwater; for small and medium-sized rivers, it is required to take water samples at three locations including the center line of the river channel and the side river lines on both sides. The first water sampling method is to collect water samples at deeper water and at a relatively long distance from the shore by lowering a water sampler from a boat. However, this method is costly and difficult to implement in some river channels where boats are inconvenient to pass. When working in river channels without bridges or in the wild suburban river channels, it is even impossible to find a support point to collect water samples; the second water sampling method is to collect water samples by manually throwing a water sampler, but this method cannot guarantee the accuracy and safety of the collection. In addition, both of the above methods have problems of poor equipment airtightness and the inability of the equipment shape and size to adapt to various external environments.

[0005] It is even more difficult to take water samples along the urban river channels. In case of water pollution emergencies, illegal sewage discharges, etc., it is necessary to quickly complete the water sample collection and detection. However, in some places, the river embankments are relatively high and there is no accessible road, so the sampling personnel cannot reach the water side. At the same time, the forms of river bank protection are different, including vertical type, slope type, composite type, etc., all of which bring many inconveniences to the sampling work. Especially for slope river channels, it is very difficult for sampling personnel to take water samples on the specified water intake vertical line; when facing a vertical river bank protection, the sampling personnel have to climb over the wall to take samples, which is also very difficult. At present, there is no water sampling method suitable for river bank protection.

[0006] In summary, there are currently two main deficiencies in the current water sample collection work. One is that it is difficult to take samples at the designated location; the other is that the existing water samplers cannot meet the requirements for collecting representative water samples. Summary of the Invention

[0007] In view of the above defects, the purpose of the present invention is to provide a water sample collection device that meets the requirements for collecting water samples at different depths at different shore distances.

[0008] The present invention provides a water sample collection device, including a telescopic rod and a water sampler.

[0009] The telescopic rod includes a plurality of sleeves connected in sequence. A positioning ring is provided on the outer wall of each sleeve. A turntable is also provided at the end of the telescopic rod. A suspension line is wound around the turntable. One end of the suspension line passes through all the positioning rings in sequence and is connected to the water sampler.

[0010] The water sampler includes a cylindrical container. The top of the container is sealed, connected to the suspension line, and is provided with a first exhaust pipe for exhausting air. The bottom of the container is provided with a water inlet pipe extending into the container. A valve seat is provided at the top of the water inlet pipe. A wire mesh is connected to the top of the valve seat. A sphere is provided between the valve seat and the wire mesh. As the water level in the container changes, the sphere opens and closes the water inlet pipe.

[0011] Preferably, a handle and a groove are provided on the turntable. The groove is used for winding the suspension line, and the handle is used to drive the turntable to rotate.

[0012] Preferably, the top of the container is sealed by a top cover. A sealing ring is provided at the bottom of the top cover, and a plurality of buckles connected to the container are provided at the outer edge.

[0013] Preferably, the bottom of the first exhaust pipe is located at the designed water level of the container, and the top is connected to a second exhaust pipe. The second exhaust pipe is detachably installed on the suspension line.

[0014] Preferably, a counterweight is provided at the bottom of the container.

[0015] Preferably, a faucet is provided at the bottom of the container.

[0016] Preferably, a filler is provided inside the sphere.

[0017] Preferably, the valve seat is in the shape of a funnel with a wider top and a narrower bottom.

[0018] Preferably, a buoyancy member is also provided on the suspension line between the telescopic rod and the water sampler to assist the water sampler in taking water samples at the required depth.

[0019] The present invention also provides a method for using the aforementioned water sample collection device, comprising the following steps:

[0020] S1. Connect the telescopic rod, hanging line and water sampler, set the buoyancy member at the sampling water depth, and the sampling personnel hold the telescopic rod on the shore, place the water sampler in the water, and gently lift the hanging line upward to make the water sampler float. Then, push the water sampler to the designated collection point using the telescopic rod;

[0021] S2. Rotate the turntable to release the suspension line. When the buoyancy element contacts the water surface, the turntable stops rotating. Wait for the water sampler to slowly sink to the specified depth under the action of gravity and automatically collect water samples.

[0022] S3. Reversely rotate the turntable to retract the suspension line, and use the buoyancy to drag the water extractor back to complete a collection operation.

[0023] The present invention is beneficial in that

[0024] 1. The device has a simple structure, reasonable force transmission, light weight, and is easy to operate by one person. The water sampler is connected to the hanging line in the telescopic pole. The hanging line can be retracted and the length of the telescopic pole can be adjusted by manually driving the turntable to change the position of the water sampler. This overcomes the inconvenience of offshore water sample collection and enables the autonomous water sampling effect at any distance from the shore. It is conducive to water sample collection operations on the shore with complex conditions, and improves the standardization, accuracy and safety of water sample collection.

[0025] 2. The unique design of the water dispenser features an inlet pipe located at the center of the container, serving as both a connecting pipe and a stabilizer. The symmetry of the dispenser's mass allows it to maintain stability during descent. In currents and waves, the dispenser acts like a tumbler, steadily drawing water from the bottom. Combined with a ball valve, valve seat, and mesh frame, it achieves water sampling at a fixed point and depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the working state of the water sample collection device of the present invention;

[0027] Figure 2 It is a schematic diagram of the external structure of the water dispenser;

[0028] Figure 3 It is a schematic diagram of the internal structure of the water dispenser;

[0029] Figure 4 It is a top view of the container;

[0030] Figure 5 It is a schematic diagram of the structure of a sphere;

[0031] Figure 6 It is a schematic diagram of the coordination between the ball, valve seat and grid;

[0032] Figure 7 It is a schematic diagram of the working state of the water dispenser;

[0033] Figure 8 It is a structural diagram of the top cover;

[0034] Figure 9 It is a schematic diagram of the local structure of the suspension line.

[0035] Component number description:

[0036] 1 telescopic rod

[0037] 11 Sleeve

[0038] 12 handles

[0039] 13 Turntable

[0040] 14 Locating ring

[0041] 2 hanging wires

[0042] 21 lashing ring

[0043] 22 Buoyancy elements

[0044] 23 Hook Hinge

[0045] 3 Water dispenser

[0046] 31 Top cover

[0047] 311 buckle

[0048] 312 Rings

[0049] 313 sealing ring

[0050] 32 containers

[0051] 33 Water inlet pipe

[0052] 34 counterweight

[0053] 4 faucets

[0054] 51 First exhaust pipe

[0055] 52 Second exhaust pipe

[0056] 6 spheres

[0057] 61 opening

[0058] 71 valve seat

[0059] 72 Grid

[0060] 8 Filling DETAILED DESCRIPTION

[0061] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0062] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0063] In addition, in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0064] As Figure 1 shown, the present invention provides a water sample collection device, which mainly includes a telescopic rod 1 and a water sampler 3. Among them, the telescopic rod 1 includes a plurality of sleeves 11 connected in sequence, so that the length of the telescopic rod 1 can be adjusted. The connection methods of the plurality of sleeves 11 are divided into a pull-out type and a plug-in type. The pull-out type is also called an antenna type, and the plurality of sleeves 11 can be contracted and hidden in the sleeve with the largest inner diameter. Each sleeve 11 is a hollow structure. When not in use, it is nested and retracted. When in use, it is sequentially pulled out or plugged together, which is convenient to carry, but the firmness is insufficient; the adjacent two sleeves 11 of the plug-in type are thread-connected, which is convenient for loading and unloading. Its characteristic is that the interface is tight and the overall performance of the telescopic rod 1 after being stressed is good. The telescopic rod 1 can be made of materials such as carbon fiber, stainless steel, fiberglass (glass fiber material), or carbon. Generally, it includes three sleeves 11. When the number of sleeves 11 is more and the length is shorter, the whole is more convenient to carry, but the structural strength is also lower.

[0065] At the end of the telescopic rod 1, there are a handle 12 and a turntable 13. The handle 12 is made of cotton thread, nylon thread or rubber thread. Generally, rubber thread is preferred as it has good waterproof, anti-pollution and anti-slip effects, facilitating hand-holding. The turntable 13 is provided with a handle (not shown) and a groove. The groove is used for winding the suspension line 2 to prevent the suspension line 2 from detaching from the turntable 13. The handle is used to drive the turntable 13 to rotate forward or backward, thereby taking in and releasing the suspension line 2. An outer ring of the turntable 13 is also equipped with a turntable protective cover (not shown), which encloses the suspension line 2 in the groove, thus preventing the suspension line 2 from loosening, falling off or getting entangled. A limiting member (not shown) is also provided on the turntable 13 for locking the position of the turntable 13 and fixing the length of the suspension line 2. On the outer wall of each sleeve 11, there is a positioning ring 14. One end of the suspension line 2 passes through all the positioning rings 14 in sequence and is connected to the water intake device 3. The positioning ring 14 must be made of materials with high strength and low resistance. Generally, it includes a bracket and a wire guide ring. The bracket is made of stainless steel, which is not easy to rust and is relatively tough. The material of the wire guide ring is a ceramic ring and silicon carbide.

[0066] As Figures 2 - 4 shown, the water intake device 3 integrates functions such as self-balancing, bottom water intake, automatic water inlet, and water level control. It includes a cylindrical container 32 with an open top, which is sealed by a top cover 31. The top cover 31 is connected to the suspension line 2 and is provided with a first exhaust pipe 51 for exhausting air. At the center of the bottom of the container 32, there is a water inlet pipe 33 extending into the container 32, that is, the bottom of the water inlet pipe 33 is the inlet and the top is the outlet. The outlet is located inside the container 32 and below the top cover 31. Compared with open vessels, the water collected by the water intake device 3 that takes in water from the bottom in the present invention will not be mixed with other water, will not be polluted when moving in the river channel, and will not be affected by floating objects when taking water. At the outlet, there is a valve seat 71. The top of the valve seat 71 is connected to a wire net 72, and a sphere 6 is provided between the valve seat 71 and the wire net 72. As the water level in the container 32 changes, the sphere 6 opens and closes the water inlet pipe 33, acting as a spherical valve. Both the container 32 and the top cover 31 can be made of materials with high water adhesion, such as glass, plexiglass or acrylic.

[0067] In a specific embodiment of the present invention, the volume of the container 32 needs to be determined according to the amount of water taken each time, and the designed water level inside is determined according to the volume. At the same time, for stability, its shape should not be set to be slender, the center of gravity should be set as low as possible, and the ratio of its height to diameter should be controlled within 1:1 to 0.8. When the total weight of the water intake device 3 is greater than its buoyancy in water, the water intake device 3 will sink in water. Therefore, a counterweight 34 is provided at the bottom of the container, which is evenly arranged at the bottom of the container 32 and can be a counterweight block pasted on the bottom or a counterweight layer. A faucet 4 is also provided at the bottom of the container 32. After taking the water sample, the water in the container 32 is poured into an empty bottle using the faucet 4.

[0068] As Figure 3 , Figure 8 and Figure 9 shown, a sealing ring 313 made of rubber is provided at the bottom of the top cover 31, and a plurality of buckles 311 connected to the container 32 are provided at the outer edge. The buckles 311 are preferably made of stainless steel. A counterweight may be provided at the bottom of the top cover 31. Under the dual action of gravity and the buckles 311, the top cover 31 presses the sealing ring 313, and the top cover 31 and the container 32 are hermetically connected. A lifting ring 312 made of stainless steel is also provided on the top cover 31, and the lifting ring 312 is connected to the hook hinge 23 provided at the end of the lifting wire 2, and its strength can adapt to the total weight after the water intake device 3 takes water. Since all are standardized components, it is convenient for factory production, and at the same time has universality, which is convenient for maintenance and replacement. Such a setting facilitates cleaning the inner wall of the container 32 and also facilitates the maintenance or replacement of internal parts.

[0069] The first exhaust pipe 51 is preferably a PVC hard pipe, and its bottom is located at the designed water level of the container 32, that is, the pipe orifice is flush with the highest water level in the container 32. The top is connected to a second exhaust pipe 52. The second exhaust pipe 52 is preferably a flexible pipe, and it is detachably installed on the lifting wire 2 through a binding ring 21. The total length of the first exhaust pipe 51 and the second exhaust pipe 52 needs to be determined according to the lowest water intake level, so as to ensure that when the water intake device 3 is at the lowest water intake level, the second exhaust pipe 52 extends out of the water surface and can discharge the air in the container 32. The diameter of the exhaust pipe is generally 10-15 mm.

[0070] Put the container 32 into the water, the water in the river channel enters the container 32 through the water inlet pipe 33, and the gas in the container 32 is discharged through the exhaust pipe; when the water level in the container 32 reaches the designed water level, the first exhaust pipe 51 intakes water and cannot exhaust gas, so the container 32 no longer intakes water and is in a closed state. Therefore, the exhaust pipe not only has the function of exhausting gas, but also can control the water level in the container 32.

[0071] A buoyancy member 22 is also provided on the lifting wire 2 between the telescopic rod 1 and the water intake device 3. The buoyancy member 22 is a cylinder and can be made of an EPS foam board. Its function is to provide buoyancy for the water intake device 3 and control the water intake device 3 to take water at a specified depth underwater, that is, to keep the water intake device 3 sucking water at a fixed depth. During operation, adjust the position of the buoyancy member 22 on the lifting wire 2 according to the detected depth. When the water intake device 3 reaches the specified depth, the lower half of the buoyancy member 22 is immersed in water to provide buoyancy, and at this time the buoyancy should be equal to the total weight of the water intake device 3 after being filled with water. Preferably, the lifting wire 2 can also be painted for marking as the buoyancy member clamping mark when detecting different depths.

[0072] As Figure 3 , Figure 5 and Figure 6As shown, the water inlet pipe 33 and the water intake 3 are integrally cast from the same material. The height of its outlet determines the volume of the container 32, and its diameter depends on the volume of the container 32, buoyancy, water intake time, size of the valve seat 71, diameter of the sphere 6, etc., generally being 30 - 50 mm. The principle of communicating vessels is applied in the design of the water inlet pipe 33, thus connecting the container 32 with the river water body. To ensure that the sphere 6 can be in close contact with the valve seat 71 and will not fall from the valve seat 71 into the water inlet pipe 33, the valve seat 71 is in the shape of a funnel with a wider top and a narrower bottom. When the sphere 6 contacts the valve seat 71, the outlet of the water inlet pipe 33 is closed. Its size is determined according to the diameter d at the outlet of the water inlet pipe 33. The specific height h of the valve seat 71 is 0.68d, and the inclination angle is 105°.

[0073] The sphere 6 is of a hollow structure, with a filler 8 provided inside, and an opening 61 provided at the top. The filler 8 can be filled into the inside through the opening 61, and after filling, the opening 61 is blocked. Specifically, the filler 8 is fine sand. In this way, no matter how the sphere 6 is turned over, the filler 8 is always at the bottom of the sphere 6, and any part of the sphere 6 contacting the valve seat 71 can form surface water stop. Specifically, the diameter of the sphere 6 is 1.27d. When sampling operations are carried out at different depths underwater, the weight of the filler 8 inside the sphere 6 also increases with the increase of depth, and its weight can be calculated according to the water pressure at the water intake point, ensuring that the sphere 6 is subject to a buoyancy greater than its own weight at the water intake point and moves upward, and the outlet of the water intake pipe 33 is opened. It can be seen from this that at the water intake point, the total weight of the sphere 6 should be equal to the water pressure.

[0074] The grid frame 72 is composed of multiple portal frames. Its top shape is symmetrically upper and lower with the valve seat 71, ensuring that the sphere 6 can only move up and down and preventing it from moving to other positions inside the container 32. The grid frame 72 is made of stainless steel bars, and an L-shaped bar is provided at its bottom. During installation, using the elasticity of the bar, the L-shaped bar is inserted into the sleeve on the valve seat 71. When the sphere 6 moves upward and the outlet of the water inlet pipe 33 is opened, the sphere 6 only stays inside the grid frame 72 and directly above the valve seat 71.

[0075] As Figure 7 shown, the working principle of the present invention is as follows: At the beginning, the sphere 6 is under the action of gravity and lands on the valve seat 71, and the outlet of the water inlet pipe 33 is closed, and there is no water in the container 32; the water intake 3 is sunk to the water intake point. At this time, the buoyancy member 22 provides buoyancy, and the water intake 3 remains stable in the water. The sphere 6 is subject to a buoyancy greater than its own weight and moves upward, and the outlet of the water inlet pipe 33 is opened. The water in the river enters the container 32 through the water inlet pipe 33, and the gas in the container 32 is discharged through the exhaust pipe; when the water level in the container 32 reaches the designed water level, the first exhaust pipe 51 takes in water and cannot exhaust gas. Therefore, under the air pressure in the container 32, the container 32 stops taking in water and is in a closed state. The sphere 6 then falls back to the valve seat 71 under the action of gravity, forming a cut-off lock, and the sampling is completed.

[0076] The water sampler 3 can be used in combination with the telescopic rod 1 or used alone. For example, it can be used to collect water samples on a ship or in a collection pool, etc.

[0077] As Figure 1 shown, the present invention also provides a method for using the foregoing water sample collection device, including the following steps:

[0078] S1. Connect the telescopic rod 1, the suspension line 2 and the water sampler 3. Set the buoyancy member 22 at the depth where the water sample is to be taken. The sampling personnel hold the telescopic rod 1 on the shore, place the water sampler 3 in the water, and gently lift the suspension line 2 upward to make the water sampler 3 in a floating state. Then, push the water sampler 3 to the designated collection point through the telescopic rod 1.

[0079] S2. Rotate the turntable 13 to release the suspension line 2. Stop rotating when the buoyancy member 22 contacts the water surface, and wait for the water sampler 3 to slowly sink to the designated depth under the action of gravity. At this time, the buoyancy member 22 provides buoyancy and the water sampler 3 remains stable, automatically collecting the water sample.

[0080] S3. When the container 32 is filled with the water sample, rotate the turntable 13 in the reverse direction to retract the suspension line 2. To avoid breaking the telescopic rod 1, the water sampler 3 can be dragged back by using the buoyancy of the water. Remove the water sampler 3, open the water tap 4, drain the water in the water sampler 3 into other containers and seal it, completing one collection operation. Then reach the next water sample collection point for collection, and repeat the above steps.

[0081] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A water sample collection device, characterized in that, It includes a telescopic rod (1) and a water sampler (3). The telescopic rod (1) includes a plurality of sleeves (11) connected in sequence. A positioning ring (14) is provided on the outer wall of each sleeve (11). A turntable (13) is also provided at the end of the telescopic rod (1). A suspension line (2) is wound around the turntable (13). One end of the suspension line (2) passes through all the positioning rings (14) in sequence and is connected to the water sampler (3). The water sampler (3) includes a cylindrical container (32). The top of the container (32) is sealed by a top cover (31), connected to the suspension line (2), and is provided with a first exhaust pipe (51) for exhausting air. The bottom of the container (32) is provided with a water inlet pipe (33) extending into the interior of the container (32). A valve seat (71) is provided at the top of the water inlet pipe (33). A wire mesh (72) is connected to the top of the valve seat (71). A sphere (6) is provided between the valve seat (71) and the wire mesh (72). A filler (8) is provided inside the sphere (6). As the water level in the container (32) changes, the sphere (6) opens and closes the water inlet pipe (33).

2. The water sample collection device according to claim 1, characterized in that, The turntable (13) is provided with a handle and a groove. The groove is used for winding the suspension line (2), and the handle is used to drive the turntable (13) to rotate.

3. The water sample collection device according to claim 1, wherein The bottom of the top cover (31) is provided with a sealing ring (313), and a plurality of buckles (311) connected to the container (32) are provided at the outer edge.

4. The water sample collection device according to claim 3, wherein, The bottom of the first exhaust pipe (51) is located at the designed water level of the container (32), and the top is communicated with a second exhaust pipe (52). The second exhaust pipe (52) is detachably installed on the suspension line (2).

5. The water sample collection device according to claim 1, wherein, A counterweight (34) is provided at the bottom of the container (32).

6. The water sample collection device according to claim 1, wherein A faucet (4) is provided at the bottom of the container (32).

7. The water sample collection device according to claim 1, characterized in that, The valve seat (71) is in the shape of a funnel with a wider top and a narrower bottom.

8. The water sample collection device according to claim 1, wherein A buoyancy member (22) is also provided on the suspension line (2) between the telescopic rod (1) and the water sampler (3) to assist the water sampler (3) in collecting water samples at the required depth.

9. A method for using the water sample collection device according to claim 8, characterized in that, It includes the following steps: S1. Connect the telescopic rod (1), the suspension line (2) and the water sampler (3). Set the buoyancy member (22) at the sampling water depth. The sampling personnel hold the telescopic rod (1) on the shore, place the water sampler (3) in the water, and gently lift the suspension line (2) upward to make the water sampler (3) in a floating state. Then, push the water sampler (3) to the designated collection point through the telescopic rod (1). S2. Rotate the turntable (13) to release the suspension line (2). Stop rotating when the buoyancy member (22) contacts the water surface, and wait for the water sampler (3) to slowly sink to the designated depth under the action of gravity to automatically collect water samples. S3. Rotate the turntable (13) in the reverse direction to retract the suspension line (2), and use the buoyancy to drag the water sampler (3) back to complete one collection operation.

Images