A water source sampling device for hydrological survey

Abstract

The present invention discloses a water source sampling device for hydrological survey, comprising a sampling cylinder, a plurality of sampling cylinders, the sampling cylinder comprising a fixed cylinder and a movable plate, two movable plates being provided, the movable plate being connected to the fixed cylinder through a telescopic cylinder, the telescopic cylinder being connected to the fixed cylinder, a frame, a limiting assembly, an adjusting assembly and a pumping assembly, the sampling cylinder being arranged on the frame, the limiting assembly being used for limiting the movable plate after the telescopic cylinder is extended, the limiting assembly comprising a fixed block and a limiting ring, the fixed block being arranged at one end of the movable plate away from the fixed cylinder, the limiting ring being slidably arranged on the frame, a limiting spring being arranged between the limiting ring and the frame, the adjusting assembly being used for adjusting the distance between the two sampling cylinders, and the pumping assembly being used for pumping water into the interior of the sampling cylinder. The present invention solves the problem that it is difficult to ensure sampling at different depths at the same time and position in the prior art, and the sampling results are biased.

Description

Technical Field

[0001] The invention relates to the technical field of sampling, and in particular to a hydrological survey water source sampling device. Background Art

[0002] Hydrological survey refers to the hydrogeological investigation and research work carried out to find out the hydrogeological conditions of a region. It aims to understand the causes, distribution and movement of groundwater and surface water, and provide a basis for the rational exploitation and utilization of water resources and the correct design and construction of foundation and piling projects. Water source sampling is an important part of hydrological survey. Its purpose is to obtain representative samples of water bodies and conduct physical, chemical and biological analysis. The accuracy and reliability of water source sampling are directly related to the accuracy of hydrological research and environmental monitoring.

[0003] Before the sampler is lowered into the water, the current water source sampling device inflates the interior of the sampler and applies pressure to prevent the sampler from entering the well before reaching the predetermined depth. After reaching the required depth, the gas is released. Under the action of the hydrostatic pressure of the water column, the water in the sampling area fills the sampler. In order to monitor the water source more comprehensively, it is necessary to collect water samples at different depths. Traditional samplers can usually only collect water at a certain fixed water depth. When collecting water samples at different depths, different samplers need to be replaced and multiple sampling is required, which is inefficient and difficult to ensure simultaneous sampling of different depths at the same location. The sampling results are biased. In addition, during multiple sampling processes, the diving, lifting and sampling of the sampler in the previous sampling process will cause water flow, which will affect the subsequent sampling results. Therefore, we propose a hydrological survey water source sampling device that can sample water sources at different depths at the same location at the same time, and the sampling results are more accurate. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a hydrological survey water source sampling device to solve the problem mentioned in the background technology that the prior art is difficult to ensure simultaneous sampling at the same position but at different depths, and the sampling results are biased.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A hydrological survey water source sampling device, comprising a sampling cylinder, wherein the sampling cylinder is provided with a plurality of sampling cylinders, the sampling cylinder comprises a fixed cylinder and a movable plate, wherein the movable plate is provided with two, the movable plate is connected to the fixed cylinder through a telescopic cylinder, the telescopic cylinder is communicated with the fixed cylinder, and further comprising:

[0009] A frame, on which the sampling cylinder is arranged;

[0010] A limiting assembly, the limiting assembly is used to limit the movable plate after the telescopic cylinder is extended, and the limiting assembly includes:

[0011] A fixed block, the fixed block is arranged at an end of the movable plate away from the fixed cylinder;

[0012] A limiting ring, wherein the limiting ring is slidably arranged on the frame, a limiting spring is arranged between the limiting ring and the frame, and the limiting ring is in contact with the fixed block;

[0013] An adjusting component, the adjusting component is used to adjust the distance between the two sampling cylinders, and the adjusting component comprises:

[0014] Adjusting screw;

[0015] A limit plate, the limit plate is arranged on the frame, and the limit plate is provided with a through hole for the adjusting screw to pass through;

[0016] Limiting nuts, wherein the limiting nuts are provided in multiple groups, the multiple groups of limiting nuts correspond to the multiple limiting plates one by one, the number of limiting nuts in each group is two, the limiting nuts are threadedly connected to the adjusting screw, and the limiting plate is located between the two limiting nuts;

[0017] A pumping assembly, the pumping assembly is used to pump water into the interior of the sampling cylinder, and the pumping assembly includes:

[0018] Dual-purpose air pump;

[0019] A water outlet pipe, the water outlet pipe is connected to the bottom of the fixed cylinder, and a valve is provided on the water outlet pipe;

[0020] An air intake pipe, the air intake pipe is connected to the top of the fixed cylinder, the air intake pipe is connected to the dual-purpose air pump, a liquid level gauge is arranged inside the air intake pipe, an electric valve is arranged on the air intake pipe, and the electric valve is electrically connected to the liquid level gauge;

[0021] A water suction pipe is arranged on the movable plate, the water suction pipe is communicated with the telescopic cylinder, and a one-way valve is arranged on the water suction pipe.

[0022] In order to ensure that the telescopic cylinder is in a retracted state during the diving process, the movable plate is connected to the fixed cylinder via a retractable spring and a telescopic rod.

[0023] In order to reduce the disturbance of water source when the frame body dives, a plurality of water openings are opened on the frame body.

[0024] In order to reduce the large impurities in the water from entering the sampling cylinder and affecting the detection results, a water absorption hole adapted to the water absorption pipe is opened on the frame, and a screen is arranged at the water absorption hole.

[0025] In order to release the limit of the movable plate, a pull rod is arranged on the limit ring, the pull rod and the frame are in sliding cooperation, and a pull ring is arranged on the pull rod.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the present invention provides a hydrological survey water source sampling device, which has the following beneficial effects:

[0028] 1. In the present invention, the limit plate is limited by two limit nuts, so as to adjust the position of the frame and the sampling cylinder. The distance between multiple groups of limit nuts can be adjusted by rotating the limit nuts, so as to adjust the distance between multiple sampling cylinders and sample water sources at different depths.

[0029] 2. In the present invention, the frame drives the sampling cylinder to dive into the water source. Under the action of the contraction spring, the telescopic cylinder is in a contracted state. The volume of the sampling cylinder is smaller when it dives, reducing the disturbance to the water source. The water outlet on the frame can also reduce the disturbance to the water flow.

[0030] 3. In the present invention, the sampling cylinder dives into the water source, and air is supplied to the interior of the fixed cylinder by a dual-purpose air pump to push the telescopic cylinder to extend. The movable plate drives the fixed block to move to the limit ring, and the fixed block is limited by the limit ring. Then the dual-purpose air pump sucks air into the fixed cylinder, and the pressure in the telescopic cylinder is reduced, so that the water source enters the interior of the telescopic cylinder and the fixed cylinder through the water suction pipe and the one-way valve, and the sampling is completed. After the sampling cylinder is moved out of the water, the limit ring is pulled to release the limit on the movable plate, and the dual-purpose air pump supplies air to the interior of the fixed cylinder. Under the action of the contraction spring and the air pressure of the dual-purpose air pump, the water source in the sampling cylinder is discharged from the water outlet pipe for detection.

[0031] 4. Therefore, compared with the sampling method of multiple sampling at a fixed position in the prior art, the present invention arranges multiple sampling cylinders, and adjusts the distance between the multiple sampling cylinders through the cooperation of the limit nut and the adjusting screw, so as to sample water sources at different depths at the same time. The initial telescopic cylinder is in a retracted state to reduce the disturbance of the water flow during diving, and the interior of the sampling cylinder is inflated by a dual-purpose air pump so that the movable plate drives the fixed block to move to the limit ring and is limited by the limit ring. The dual-purpose air pump sucks air into the interior of the sampling cylinder to allow the water source to enter the interior of the telescopic cylinder and the fixed cylinder. After the sampling cylinder rises, the limit of the movable plate by the limit ring is released, and the dual-purpose air pump blows air into the interior of the sampling cylinder to open the valve so that the water source inside the sampling cylinder can flow out through the water outlet pipe for detection. Water sources at the same position but at different depths can be sampled at the same time, and the sampling efficiency is high. At the same time, the sampling result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the overall structure of this application;

[0033] Figure 2 This is a schematic diagram of the structure of the frame and sampling cylinder of this application;

[0034] Figure 3 This is a schematic diagram of the structure of the sampling cylinder for this application;

[0035] Figure 4 This is a schematic diagram of the structure of the frame and the limit assembly of this application;

[0036] Figure 5 For this application Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0037] Figure 6 For this application Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0038] In the figure:

[0039] 1. Frame; 2. Screen;

[0040] 101, fixed cylinder; 102, movable plate; 103, telescopic cylinder; 104, contraction spring; 105, telescopic rod;

[0041] 201, fixed block; 202, limiting ring; 203, limiting spring; 204, pull rod; 205, pull ring;

[0042] 301, adjusting screw; 302, limiting plate; 303, limiting nut;

[0043] 401. Dual-purpose air pump; 402. Water outlet pipe; 403. Air intake pipe; 404. Water intake pipe; 405. Liquid level gauge; 406. Electric valve; 407. One-way valve. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figures 1 to 6A hydrological survey water source sampling device includes a sampling cylinder, a frame 1, a limit assembly, an adjustment assembly and a pumping assembly. Compared with the sampling method of multiple samplings at a fixed position in the prior art, the present invention sets multiple sampling cylinders, and adjusts the distance between the multiple sampling cylinders through the cooperation of the limit nut 303 and the adjustment screw 301, so as to sample water sources at different depths at the same time. The initial telescopic cylinder 103 is in a contracted state to reduce the disturbance of the water flow during diving. The interior of the sampling cylinder is inflated by a dual-purpose air pump 401 to make the moving plate 1 02 drives the fixed block 201 to move to the limiting ring 202 and is limited by the limiting ring 202. The dual-purpose air pump 401 sucks air into the interior of the sampling cylinder to allow the water source to enter the interior of the telescopic cylinder 103 and the fixed cylinder 101. After the sampling cylinder rises, the limiting ring 202 on the movable plate 102 is released, and the dual-purpose air pump 401 blows air into the sampling cylinder to open the valve, so that the water source inside the sampling cylinder can flow out through the outlet pipe 402 for detection. The water sources at the same position but different depths can be sampled at the same time, the sampling efficiency is high, and the sampling results are more accurate.

[0046] See also Figures 1 to 3 , there are multiple sampling cylinders, the sampling cylinder includes a fixed cylinder 101 and a movable plate 102, two movable plates 102 are provided, the movable plate 102 is connected to the fixed cylinder 101 through a telescopic cylinder 103, the telescopic cylinder 103 is communicated with the fixed cylinder 101, the sampling cylinder is arranged on the frame 1, in order to reduce the disturbance of the water source when the frame 1 dives, a plurality of water through holes are opened on the frame 1, and the volume of the sampling cylinder can be adjusted by the extension and contraction of the telescopic cylinder 103. When sampling, the telescopic cylinder 103 is in a contracted state, reducing the volume of the sampling cylinder, thereby reducing the disturbance of the water source when the sampling cylinder dives, and at the same time, water passes through the frame 1 through the water through holes, reducing the disturbance of the water source caused by the frame 1. After the sampling cylinder body descends to the specified position, the telescopic cylinder 103 extends, allowing the water source to enter the interior of the telescopic cylinder 103 and the fixed cylinder 101 to ensure the water intake. In order to ensure that the telescopic cylinder 103 is in a retracted state during the diving process, the movable plate 102 is connected to the fixed cylinder 101 through the retraction spring 104 and the telescopic rod 105. Under the action of the retraction spring 104, when not affected by external force, the movable plate 102 is close to the fixed cylinder 101, so that the telescopic cylinder 103 is in a retracted state. The telescopic rod 105 can be extended and retracted to cooperate with the movement of the movable plate 102, while ensuring the stability of the movable plate 102 and the telescopic cylinder 103, so that it can be laterally retracted and the longitudinal deformation of the telescopic cylinder 103 can be reduced.

[0047] See also Figures 1 to 6The limiting assembly is used to limit the movable plate 102 after the telescopic cylinder 103 is extended. The limiting assembly includes a fixed block 201 and a limiting ring 202. The fixed block 201 is arranged at one end of the movable plate 102 away from the fixed cylinder 101. The limiting ring 202 is slidably arranged on the frame 1. A limiting spring 203 is arranged between the limiting ring 202 and the frame 1. The limiting ring 202 contacts the fixed block 201. The fixed block 201 is truncated cone-shaped, and the fixed block 201 The side close to the movable plate 102 is the side with a larger area. The inner side of the limiting ring 202 is arc-shaped, and the tilting direction is adapted to the fixed block 201. When the fixed block 201 moves toward the limiting ring 202, the fixed block 201 contacts the inner side of the limiting ring 202. The fixed block 201 continues to move and can push the limiting ring 202 outward. When the fixed block 201 moves to a position outside the limiting ring 202, the limiting ring 202 loses the limit of the fixed block 201. The limit spring 203 returns to its original position and presses against the larger end of the fixed block 201, limiting the fixed block 201 and preventing the movable plate 102 from approaching the fixed cylinder 101, so that the telescopic cylinder 103 is maintained at the maximum volume to hold the water source sample. In order to release the limit of the movable plate 102, a pull rod 204 is provided on the limit ring 202, and the pull rod 204 and the frame 1 are in sliding cooperation. A pull ring 205 is provided on the pull rod 204. The sliding cooperation between the pull rod 204 and the frame 1 can ensure the stability of the limit ring 202, thereby stably limiting the fixed block 201. When the telescopic cylinder 103 needs to be retracted, the pull ring 205 is pulled to make the limit ring 202 move away from the fixed block 201, so as to release the limit of the fixed block 201. Under the action of the contraction spring 104, the movable plate 102 can be returned to its original position, that is, close to the fixed cylinder 101, and the water sample inside it can be squeezed out for detection.

[0048] See also Figure 1 and Figure 5The adjusting component is used to adjust the distance between the two sampling cylinders. The adjusting component includes an adjusting screw 301, a limiting plate 302 and a limiting nut 303. The limiting plate 302 is arranged on the frame 1. A through hole for the adjusting screw 301 to pass through is opened on the limiting plate 302. There are multiple groups of limiting nuts 303, and the multiple groups of limiting nuts 303 correspond to the multiple limiting plates 302 one by one. The number of each group of limiting nuts 303 is two. The limiting nut 303 is threadedly connected to the adjusting screw 301. The limiting plate 302 is located between the two limiting nuts 303. The position of the limiting nut 303 can be adjusted more freely through the threaded cooperation of the limiting nut 303 and the adjusting screw 301. The two limiting nuts 303 are a group. The limiting plate 302 is clamped between the two limiting nuts 303 to adjust the limiting distance. The plate 302, that is, the position of the frame 1, is fixed, so that the distance between the two frames 1, that is, the two sampling cylinders, can be adjusted. After the sampling cylinder is placed in the water source, the sampling cylinder is placed at different depths, and water sources of different depths at the same position are sampled. The length of the adjusting screw 301 is relatively long, and the outside of the adjusting screw 301 can be painted with scales. The adjusting screw 301 can be held to put the sampling cylinder into the water source, and the diving depth of the sampling cylinder can be observed and controlled by the scale. At the same time, holding the adjusting screw 301 can ensure the stability of the sampling cylinder. The frame 1 and the limit plate 302 are detachably connected by bolts, and multiple limit plates 302 are arranged on the adjusting screw 301. When the sampling cylinder is increased or decreased, the sampling cylinder can be increased or decreased through the detachable connection between the limit plate 302 and the frame 1.

[0049] See also Figure 1The pumping assembly is used to pump water into the interior of the sampling cylinder. The pumping assembly includes a dual-purpose air pump 401, a water outlet pipe 402, an air suction pipe 403 and a water suction pipe 404. The water outlet pipe 402 is connected to the bottom of the fixed cylinder 101, and a valve is provided on the water outlet pipe 402. The air suction pipe 403 is connected to the top of the fixed cylinder 101, and the air suction pipe 403 is connected to the dual-purpose air pump 401. A liquid level meter 405 is provided inside the air suction pipe 403, and an electric valve 406 is provided on the air suction pipe 403. The electric valve 406 and the liquid level meter 404 are connected. 5 is electrically connected, the water suction pipe 404 is arranged on the movable plate 102, the water suction pipe 404 is connected with the telescopic cylinder 103, a one-way valve 407 is arranged on the water suction pipe 404, the dual-purpose air pump 401 is connected with multiple interfaces, the interfaces are provided with valves, the air suction pipe 403 is connected with the interfaces, the air suction pipe 403 is a telescopic hose, which can adapt to the depth change of the sampling cylinder and ensure the connection effect at the same time, the dual-purpose air pump 401 and the air suction pipe 403 are used to blow air to the fixed cylinder 101, so that the telescopic cylinder 103 is extended, driving the movable plate 102 and The fixed block 201 moves, and the limiting ring 202 limits the fixed block 201. Then, the dual-purpose air pump 401 sucks air from the fixed cylinder 101 and the telescopic cylinder 103 to reduce the pressure inside the telescopic cylinder 103 and the fixed cylinder 101. At the same time, under the action of the water pressure inside the water source, the water source enters the inside of the telescopic cylinder 103 and the fixed cylinder 101 through the water suction pipe 404. After the water source fills the telescopic cylinder 103 and the fixed cylinder 101, it continues to enter the suction pipe 403. The liquid level meter 405 senses the water surface rising, that is, the water sample fills the telescopic cylinder 10 3 and the fixed cylinder 101, an electrical signal is sent to the electric valve 406 to control the electric valve 406 to close the suction pipe 403, and the dual-purpose air pump 401 sucks air from other fixed cylinders 101. After multiple sampling cylinders are filled with water samples, the sampling cylinders are lifted out of the water surface, the limit ring 202 on the fixed block 201 is released, and the movable plate 102 is moved toward the fixed cylinder 101 under the action of the contraction spring 104. The telescopic cylinder 103 contracts to squeeze out the water inside it and discharge it through the water outlet pipe 402 for detection.

[0050] See also Figures 1 to 4 In order to reduce the large impurities in the water entering the sampling cylinder and affecting the detection results, a water absorption hole adapted to the water absorption pipe 404 is opened on the frame 1, and a screen 2 is arranged at the water absorption hole. The dual-purpose air pump 401 supplies air to the interior of the fixed cylinder 101 and the telescopic cylinder 103. When the movable plate 102 moves away from the fixed cylinder 101 and the fixed block 201 and the limit ring 202 are tightly attached, the water absorption pipe 404 enters the interior of the water absorption hole, and the water absorption hole and the water absorption pipe 404 are protected by the screen 2 to prevent large impurities in the water source from entering the interior of the sampling cylinder and affecting the detection results.

[0051] The working principle or use process of the hydrological survey water source sampling device is to select a suitable number of sampling cylinders according to the sampling needs, install the limit plate 302 on the adjustment screw 301, rotate the position of the limit nut 303, and adjust the position of the frame 1 and the sampling cylinder;

[0052] The multiple sampling cylinders are slowly submerged to the appropriate position of the sampling water source. The multiple sampling cylinders are at different depths. Initially, the telescopic cylinder 103 is in a contracted state, and the water outlet pipe 402 is in a closed state. After descending to the appropriate position, the dual-purpose air pump 401 supplies air to the interior of the fixed cylinder 101 and the telescopic cylinder 103, so that the telescopic cylinder 103 is extended to drive the moving plate 102 away from the fixed cylinder 101, and the moving plate 102 drives the fixed block 201 to push the limit ring 202 to move outward. When the fixed block 201 moves to the limit ring 202 is on the side away from the movable plate 102, and the limiting ring 202 is driven to be close to the fixed block 201 under the action of the limiting spring 203, and the fixed block 201 is limited, and then the dual-purpose air pump 401 sucks air into the interior of the sampling cylinder, and the pressure inside the sampling cylinder is reduced. The water in the water source enters the interior of the telescopic cylinder 103 and the fixed cylinder 101 through the water suction pipe 404. When the water sample fills the sampling cylinder and enters the suction pipe 403, the liquid level meter 405 senses the water volume and controls the electric valve 406 to close the suction pipe 403;

[0053] After multiple sampling cylinders are filled with water samples, the sampling cylinders and the frame 1 are lifted above the water source, the water outlet pipe 402 is opened through the valve, so that the water outlet of the water outlet pipe 402 is connected to the detection container, and the limit ring 202 is pulled away from the fixed block 201 through the pull ring 205. Under the action of the contraction spring 104, the movable plate 102 is moved close to the sampling cylinder. At the same time, the electric valve 406 opens the suction pipe 403, and the dual-purpose air pump 401 can supply air to the fixed cylinder 101 to squeeze the water sample in the sampling cylinder, and the water sample enters the detection container, and the water sample can be tested.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water source sampling device for hydrological survey, comprising a sampling cylinder, characterized in that: The sampling cylinder is provided with a plurality of cylinders, the sampling cylinder comprising a fixed cylinder (101) and a movable plate (102), two movable plates (102) are provided, the movable plate (102) is connected to the fixed cylinder (101) via a telescopic cylinder (103), the telescopic cylinder (103) is in communication with the fixed cylinder (101), and further comprises: A frame (1), wherein the sampling cylinder is arranged on the frame (1); A limiting assembly, the limiting assembly is used to limit the position of the movable plate (102) after the telescopic cylinder (103) is extended, and the limiting assembly comprises: A fixed block (201), the fixed block (201) being arranged at an end of the movable plate (102) away from the fixed cylinder (101); a limiting ring (202), the limiting ring (202) being slidably arranged on the frame (1), a limiting spring (203) being arranged between the limiting ring (202) and the frame (1), and the limiting ring (202) being in contact with the fixing block (201); An adjusting component, the adjusting component is used to adjust the distance between the two sampling cylinders; A pumping assembly, the pumping assembly is used to pump water into the interior of the sampling cylinder, and the pumping assembly includes: Dual-purpose air pump (401); a water outlet pipe (402), the water outlet pipe (402) being in communication with the bottom of the fixed cylinder (101), and a valve being provided on the water outlet pipe (402); an air intake pipe (403), the air intake pipe (403) being in communication with the top of the fixed cylinder (101), the air intake pipe (403) being in communication with the dual-purpose air pump (401), a liquid level gauge (405) being arranged inside the air intake pipe (403), an electric valve (406) being arranged on the air intake pipe (403), and the electric valve (406) being electrically connected to the liquid level gauge (405); a water suction pipe (404), the water suction pipe (404) being arranged on the movable plate (102), the water suction pipe (404) being in communication with the telescopic cylinder (103), and a one-way valve (407) being arranged on the water suction pipe (404); The movable plate (102) is connected to the fixed cylinder (101) via a contraction spring (104) and a telescopic rod (105).

2. A hydrological survey water source sampling device according to claim 1, characterized in that: The adjustment component comprises: Adjusting screw (301); a limiting plate (302), the limiting plate (302) being arranged on the frame (1), the limiting plate (302) being provided with a through hole for the adjusting screw (301) to pass through; A limiting nut (303), wherein the limiting nut (303) is provided in a plurality of groups, wherein the plurality of groups of the limiting nuts (303) correspond to the plurality of the limiting plates (302) in a one-to-one manner, wherein the number of the limiting nuts (303) in each group is two, the limiting nut (303) is threadedly connected to the adjusting screw (301), and the limiting plate (302) is located between the two limiting nuts (303).

3. A hydrological survey water source sampling device according to claim 2, characterized in that: The frame (1) is provided with a water absorption hole adapted to the water absorption pipe (404), and a screen (2) is provided at the water absorption hole.

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