Underground water sampling device for hydrogeology

Abstract

The utility model relates to the technical field of sampling devices, and discloses an underground water sampling device for hydrogeology, according to a sampling bottle, underground water at different depths is sampled by using components such as a threaded rod and a piston through a lifting component, and compared with an existing device, a sample in the sampling bottle does not need to be repeatedly taken out and then sampled during use; the operation is more time-saving, and the use is more convenient. According to the sampling device, through a one-way structure, when water flow or gas passes through the one-way structure, a baffle is pushed to enable a perforated pipe to move leftwards until the baffle is attached to a baffle ring, at the moment, air or water flow can pass through holes in the perforated pipe, and if water in a sampling bottle flows outwards, the baffle is pushed to enable the perforated pipe to move leftwards; at the moment, the blocking area can be increased through the arrangement of the arc-shaped plate, the baffle is pushed to move rightwards so that the baffle can be attached to the plate body, the sealing performance of the baffle and the plate body can be better through the arrangement of the sealing gasket, and air or water flow can be blocked so that the one-way function can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a groundwater sampling device for hydrogeology. Background Art

[0002] With the rapid development of social economy, in the groundwater sampling equipment for hydrogeology, the part of the sampler that contacts the water sample is made of inert materials (such as stainless steel, polytetrafluoroethylene, etc.), which has sufficient strength, is flexible to use, convenient and reliable. Before use, wash off the oil with detergent, rinse with tap water, rinse with 10% nitric acid, and rinse with tap water for use. The sampler has upright, horizontal, plexiglass, and automatic samplers. We currently mainly use plexiglass samplers, and directly sample with buckets and bottles. At present, the on-site measurement items usually include water temperature and transparency. Use a handheld multi-parameter water quality analyzer to measure conductivity, pH, dissolved oxygen, turbidity, etc. At the river station, sampling should be carried out under natural water flow (the water flow and the sediment at the bottom should not be disturbed), and on-site sampling requires uniformity.

[0003] China Utility Model Publication Specification CN213779618U A groundwater sampling device for hydrogeology is designed to sample groundwater at different depths. The principle is to use a traction rope with a length mark on it to sink the sampling bottle to a suitable position for sampling. It only needs to extend the electric telescopic rod to drive the piston to move upward to leak the water inlet. At this time, water will enter the sampling bottle through the water inlet for sampling.

[0004] However, the existing device can only sample groundwater at one depth at a time. If sampling is needed again, the sampling bottle needs to be lifted out of the water surface for sampling, which is a cumbersome and inconvenient process. Therefore, a device is designed to sample at multiple depths without repeated operations. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a groundwater sampling device for hydrogeology, which has the advantage of being able to sample multiple water levels while sampling groundwater, without the need to repeatedly pull to take out the sample inside the sampling bottle. This solves the problem that the prior art devices require pulling the sampling bottle out of the water each time to take out the sample and then continuing the sampling process, which is cumbersome and inconvenient when sampling at different depths.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a groundwater sampling device for hydrogeology, comprising: a sampling bottle, a measuring rope is arranged on the top of the sampling bottle, and a cable is arranged next to the measuring rope; a plurality of connecting rods are arranged, all of which are arranged at the bottom of the sampling bottle; a weight block is arranged at the bottom of the connecting rod; a lifting assembly is arranged inside the sampling bottle, and the lifting assembly comprises: a plurality of water inlet pipes are arranged, all of which penetrate the outer wall of the sampling bottle and communicate with the interior of the sampling bottle, and are fixedly connected to the sampling bottle; a plurality of exhaust pipes are arranged, all of which penetrate the outer wall of the sampling bottle and communicate with the interior of the sampling bottle; The inner wall of the sampling bottle is communicated with the interior of the sampling bottle and is fixedly connected to the sampling bottle; there are multiple one-way structures, all of which are arranged inside each of the water inlet pipe and the exhaust pipe; the motor is arranged on the top inner wall of the sampling bottle and connected to the cable; the threaded rod, the top of which passes through the inner wall of the sampling bottle and is connected to the output shaft of the motor; the piston is arranged on the outer wall of the threaded rod and is threadedly connected to the threaded rod, and the outer wall of the piston is in contact with the inner wall of the sampling bottle; the limiting rod is symmetrically arranged on the top of the piston and passes through the inner wall of the sampling bottle.

[0009] Preferably, the interval between the connecting rods is less than two centimeters.

[0010] Preferably, the lifting assembly further comprises a stopper fixedly arranged at the bottom of the threaded rod.

[0011] Preferably, the lifting assembly further comprises: a sealing ring, which is sleeved on the outer side wall of the limiting rod and the bottom of which is connected to the top of the sampling bottle.

[0012] Preferably, the lifting assembly further comprises a filter screen fixedly arranged on the bottom inner wall of the sampling bottle.

[0013] Preferably: the one-way structure includes: a plate body, fixedly arranged on the inner side walls of the water inlet pipe and the exhaust pipe; a porous tube, one end of which passes through the plate body; a baffle, symmetrically fixedly arranged on both ends of the porous tube; a baffle ring, fixedly arranged on the inner side walls of the water inlet pipe and the exhaust pipe.

[0014] Preferably, the one-way structure further comprises a sealing gasket, which is arranged on one side of the baffle.

[0015] Preferably, the one-way structure further comprises: an arc-shaped plate, which is arranged on one side of each baffle.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a groundwater sampling device for hydrogeology, which has the following beneficial effects:

[0018] 1. The sampling bottle uses a lifting assembly using a threaded rod, a piston and other components to sample groundwater at different depths. Compared with existing devices, there is no need to repeatedly take out the sample in the sampling bottle and resample it during use, which saves time and is more convenient to use.

[0019] 2. The sampling device has a one-way structure. When water or gas passes through it, it will push the baffle to move the porous tube to the left until the baffle fits with the baffle ring. At this time, air or water can pass through the holes on the porous tube. If the water inside the sampling bottle flows outward, it will push the baffle. At this time, the setting of the arc plate can increase the blocking area. At this time, the baffle is pushed to the right to fit the baffle with the plate body. At this time, the setting of the sealing gasket can make the sealing between the baffle and the plate body better, which can block the air or water from passing through to achieve the one-way function. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure inside the sampling bottle of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the single-line structure of the utility model.

[0024] In the figure: 11, sampling bottle; 12, measuring rope; 13, connecting rod; 14, weight block;

[0025] 2. Lifting assembly; 21. Water inlet pipe; 22. Exhaust pipe; 23. One-way structure; 231. Plate body; 232. Multi-hole pipe; 233. Baffle plate; 234. Baffle ring; 235. Sealing pad; 236. Arc plate; 24. Motor; 25. Threaded rod; 251. Stopper; 26. Piston; 27. Limit rod; 28. Sealing ring; 29. ​​Filter; DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1

[0028] A groundwater sampling device for hydrogeology, comprising: a sampling bottle 11, a measuring rope 12 is arranged on the top of the sampling bottle 11, and a cable is arranged next to the measuring rope 12; a connecting rod 13, which is provided with a plurality of rods, all of which are arranged at the bottom of the sampling bottle 11; a weight block 14, which is provided at the bottom of the connecting rod 13; a lifting assembly 2 is arranged inside the sampling bottle 11, and the lifting assembly 2 comprises: a water inlet pipe 21, which is provided with a plurality of rods, all of which penetrate the outer wall of the sampling bottle 11 and communicate with the interior of the sampling bottle 11, and are fixedly connected to the sampling bottle 11; a plurality of exhaust pipes 22, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 22, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 23, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 24, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 25, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 26, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 27, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 28, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 29, all of which penetrate the inner wall of the sampling bottle 11 and communicate with the sampling bottle 11; a plurality of exhaust pipes 21, all of which penetrate the inner wall The interior of the sampling bottle 11 is communicated and fixedly connected with the sampling bottle 11; a plurality of one-way structures 23 are provided, all of which are provided inside each of the water inlet pipe 21 and the exhaust pipe 22; a motor 24 is provided on the top inner wall of the sampling bottle 11 and connected with the cable; a threaded rod 25, the top of which passes through the inner wall of the sampling bottle 11 and is connected with the output shaft of the motor 24; a piston 26 is provided on the outer wall of the threaded rod 25 and is threadedly connected with the threaded rod 25, and the outer wall of the piston 26 is in contact with the inner wall of the sampling bottle 11; a limiting rod 27 is symmetrically provided on the top of the piston 26 and passes through the inner wall of the sampling bottle 11. The interval between the connecting rods 13 is less than two centimeters. The lifting assembly 2 also includes: a stopper 251 is fixedly provided at the bottom of the threaded rod 25. The lifting assembly 2 also includes: a sealing ring 28, which is sleeved on the outer wall of the limiting rod 27 and is connected to the top of the sampling bottle 11 at the bottom. The lifting assembly 2 further includes a filter screen 29 fixedly disposed on the bottom inner wall of the sampling bottle 11 .

[0029] When in use, first sink the sampling bottle 11 into the groundwater, estimate the depth that the sampling bottle 11 will reach according to the length of the measuring rope 12, and after reaching the appropriate position, start the motor 24 through the cable to drive the threaded rod 25 to move upward. At this time, the piston 26 is restricted by two limit rods 27, so when the threaded rod 25 rotates, it will drive the piston 26 to move upward, and the two water inlet pipes 21 on the inner wall of the sampling bottle 11 will leak out. At this time, the water flows into the first layer of the internal partition layer of the sampling bottle 11 through the water inlet pipe 21, and the water flows out of the air hole exhaust pipe 22 after entering. The one-way structure 23 is provided to prevent water from flowing back into the exhaust pipe 22 and water from flowing out of the water inlet pipe 21. After sampling is completed, the measuring rope 12 can be lowered to allow the sampling bottle 11 to reach a deeper position. The stratified sampling can be completed by operating according to the above method. The setting of the block 251 can prevent the threaded rod 25 and the piston 26 from separating. At the same time, the two-centimeter spacing of the connecting rod 13 can prevent living things such as fish and shrimp from entering. The setting of the filter screen 29 can filter impurities. The setting of the sealing ring 28 can prevent water from penetrating through the penetration part of the limit rod 27.

[0030] Embodiment 2

[0031] The one-way structure is refined on the basis of the first embodiment;

[0032] See also Figure 1-3 The one-way structure 23 includes: a plate body 231, fixedly disposed on the inner side walls of the water inlet pipe 21 and the exhaust pipe 22; a porous pipe 232, one end of which passes through the plate body 231; a baffle 233, symmetrically fixedly disposed on both ends of the porous pipe 232; a baffle ring 234, fixedly disposed on the inner side walls of the water inlet pipe 21 and the exhaust pipe 22. The one-way structure 23 also includes: a sealing gasket 235, disposed on one side of the baffle 233. The one-way structure 23 also includes: an arc plate 236, disposed on one side of each baffle 233.

[0033] When in use, when water or gas passes through, it will push the baffle 233 to move the porous tube 232 to the left until the baffle 233 fits with the baffle ring 234. At this time, air or water can pass through the holes in the porous tube 232. If the water inside the sampling bottle 11 flows outward, it will push the baffle 233. At this time, the setting of the arc plate 236 can increase the blocking area. At this time, the baffle 233 is pushed to move to the right so that the baffle 233 fits with the plate body 231. At this time, the setting of the sealing gasket 235 can make the sealing between the baffle and the plate body 231 better, and can block the air or water from passing through to achieve a one-way function.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A groundwater sampling device for hydrogeology, comprising: A sampling bottle (11), wherein a measuring rope (12) is arranged on the top of the sampling bottle (11), and an electric cable is arranged beside the measuring rope (12); A plurality of connecting rods (13) are provided, all of which are arranged at the bottom of the sampling bottle (11); A weight block (14) is arranged at the bottom of the connecting rod (13); The invention is characterized in that a lifting assembly (2) is arranged inside the sampling bottle (11), and the lifting assembly (2) comprises: A plurality of water inlet pipes (21) are provided, each of which penetrates the outer wall of the sampling bottle (11) and communicates with the interior of the sampling bottle (11), and is fixedly connected to the sampling bottle (11); A plurality of exhaust pipes (22) are provided, each of which penetrates the inner wall of the sampling bottle (11) and communicates with the interior of the sampling bottle (11), and is fixedly connected to the sampling bottle (11); A plurality of one-way structures (23) are provided, each of which is arranged inside each of the water inlet pipe (21) and the exhaust pipe (22); A motor (24) is arranged on the top inner wall of the sampling bottle (11) and is connected to the cable; A threaded rod (25), the top of which passes through the inner wall of the sampling bottle (11) and is connected to the output shaft of the motor (24); A piston (26) is disposed on the outer side wall of the threaded rod (25) and is threadedly connected to the threaded rod (25), and the outer side wall of the piston (26) is in contact with the inner side wall of the sampling bottle (11); The limiting rod (27) is symmetrically arranged on the top of the piston (26) and passes through the inner wall of the sampling bottle (11).

2. A groundwater sampling device for hydrogeology according to claim 1, characterized in that: The interval between the connecting rods (13) is less than two centimeters.

3. A groundwater sampling device for hydrogeology according to claim 1, characterized in that: The lifting assembly (2) further comprises: The stopper (251) is fixedly arranged at the bottom of the threaded rod (25).

4. A groundwater sampling device for hydrogeology according to claim 1, characterized in that: The lifting assembly (2) further comprises: The sealing ring (28) is sleeved on the outer wall of the limiting rod (27), and the bottom thereof is connected to the top of the sampling bottle (11).

5. The groundwater sampling device for hydrogeology according to claim 1, characterized in that: The lifting assembly (2) further comprises: The filter screen (29) is fixedly arranged on the inner side wall of the bottom of the sampling bottle (11).

6. A groundwater sampling device for hydrogeology according to claim 1, characterized in that: The one-way structure (23) comprises: A plate body (231) is fixedly arranged on the inner side walls of the water inlet pipe (21) and the exhaust pipe (22); A porous tube (232), one end of which passes through the plate body (231); Baffles (233) are symmetrically fixedly disposed at two ends of the porous tube (232); A retaining ring (234) is fixedly arranged on the inner side walls of the water inlet pipe (21) and the exhaust pipe (22).

7. A groundwater sampling device for hydrogeology according to claim 6, characterized in that: The one-way structure (23) further comprises: A sealing gasket (235) is arranged on one side of the baffle (233).

8. A groundwater sampling device for hydrogeology according to claim 6, characterized in that: The one-way structure (23) further comprises: An arc-shaped plate (236) is arranged on one side of each baffle (233).

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