Underground water sampler for site environment investigation

Abstract

The utility model relates to the field of underground water sampling devices, and discloses an underground water sampler for site environment investigation, which comprises a support frame and sampling bottles, a plurality of sampling bottles are arranged in the support frame along the vertical direction, the sampling bottles are detachably connected with the support frame, and the adjacent sampling bottles are detachably connected. The sampling bottle is provided with a plurality of water inlet holes, a sealing assembly is arranged in the sampling bottle, the sealing assembly is detachably connected with the water inlet holes, the device further comprises a driving assembly and a counter-force assembly, the driving assembly is arranged at the upper end of the supporting frame, and the counter-force assembly is detachably connected with the driving assembly. The driving assembly selectively drives the counter-force assembly to move so that the counter-force assembly and the water inlet hole can be arranged in a staggered or opposite mode, and then the sealing assembly is driven to seal or open the water inlet hole. When underground water layers with different depths are sampled, a sealing structure of a single water storage structure can be independently operated, and energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sampling devices for groundwater, in particular to a sampler for groundwater in site environmental investigation. Background Art

[0002] Groundwater refers to the water in the saturated aquifer below the groundwater table, which can be divided into three categories: perched water, phreatic water and confined water. Most common groundwater is phreatic water. When collecting groundwater samples, it is usually necessary to use a sampler to sample groundwater at different depths to improve the accuracy of collected groundwater data.

[0003] The patent with the publication number of CN117330363A discloses a groundwater sampling device. The side wall of the vertical cylinder is provided with water inlet holes, and a waterproof motor is arranged at the upper end. The output shaft of the waterproof motor is rotationally connected with the vertical cylinder through a sealed bearing, and a rotating shaft is fixedly installed at the output end. The rotating shaft sequentially penetrates through a plurality of partition plates from top to bottom. The partition plates are fixedly installed on the vertical cylinder, and the partition plates are all rotationally connected with the rotating shaft through sealed bearings. The lower end of the rotating shaft is rotationally connected with the bottom surface of the inner wall of the vertical cylinder through a bearing. A plurality of annular sealing plates are arranged in the water storage cabin. Through grooves capable of aligning with the corresponding water inlet holes are formed on the annular sealing plates, and the annular sealing plates are fixedly connected with the rotating shaft through corresponding connecting rods. The included angle of the projections of two adjacent through grooves 9 on the horizontal plane is 90°. During the process of groundwater collection, since the rotating shaft and the vertical cylinder are rotationally connected through bearings, and the rotating shaft and the annular seal are fixedly connected, when the rotating shaft rotates, the annular sealing plate simultaneously rotates in friction with three water storage cavities, and it is impossible to perform separate operations on the sealing plates in a single water storage cavity, resulting in redundant energy loss.

[0004] In view of this, how to change the current situation that when sampling groundwater layers at different depths, it is impossible to perform separate operations on the sealing structure of a single water storage structure and reduce energy loss has become a technical problem that needs to be urgently solved by those skilled in the art. Content of the Utility Model

[0005] The utility model aims to provide a sampler for groundwater in site environmental investigation to overcome the above deficiencies.

[0006] In order to achieve the above object, the technical solution of the utility model is: A sampler for groundwater in site environmental investigation, comprising:

[0007] A support frame and a sampling bottle. A plurality of the sampling bottles are arranged inside the support frame along the vertical direction. The sampling bottles are detachably connected between the sampling bottles and the support frame and between adjacent sampling bottles. The sampling bottle is provided with a plurality of water inlet holes.

[0008] A sealing assembly is arranged inside the sampling bottle. The sealing assembly is detachably connected to the water inlet hole. The device further includes a driving assembly and a reaction force assembly. The driving assembly is arranged at the upper end of the support frame. The driving assembly selectively drives the reaction force assembly to move so as to be staggered or opposite to the water inlet hole, and then drives the sealing assembly to block or open the water inlet hole respectively.

[0009] Further, the sealing assembly includes a fixing frame, a sealing plug and a spring. The fixing frame is fixedly connected inside the sampling bottle. Two ends of the spring are respectively fixedly connected to one end of the fixing frame and one end of the sealing plug. The other end of the sealing plug is detachably connected to the water inlet hole.

[0010] Further, the driving assembly includes a waterproof motor and a threaded rod. The output shaft of the waterproof motor is in transmission connection with the threaded rod. The waterproof motor is fixedly installed at the upper end of the support frame, and the output shaft of the waterproof motor vertically penetrates the upper end of the support frame. The threaded rod is rotatably connected to the support frame.

[0011] Further, the reaction force assembly includes a support ring and reaction force magnets. The support ring is located on the periphery of the sampling bottle. A plurality of the reaction force magnets are fixedly connected to the support ring. The support ring is slidably connected along the vertical direction of the support frame and is in threaded connection with the threaded rod. The water inlet hole is arranged on the side wall of the sampling bottle. A sealing magnet is arranged inside the sealing plug. The positive and reverse rotation of the output shaft of the waterproof motor can selectively drive the reaction force magnets to be opposite to the sealing plug, and the magnetic poles of the opposite surfaces of the reaction force magnets and the sealing magnet are the same.

[0012] Further, the sampling bottle is a cylindrical structure with an open upper end, and external threads are arranged at the upper end of the sampling bottle. The bottle body of the sampling bottle extends downward to form an extension section, and internal threads are arranged on the inner side wall of the extension section. The adjacent extension section and the upper end of the sampling bottle are detachably connected by threads, and the uppermost sampling bottle and the support frame are in threaded connection.

[0013] Further, sensors are fixedly connected inside the sampling bottle, and a plurality of the sensors are respectively arranged corresponding to the inner sides of the upper openings of the plurality of sampling bottles.

[0014] Further, a counterweight is arranged at the lower end of the support frame to increase the weight of the sampler and facilitate sinking during sampling.

[0015] Further, through holes are vertically arranged on the support frame.

[0016] Further, a hanging ring is arranged at the upper end of the support frame.

[0017] Compared with the prior art, the utility model has at least the following advantages: When sampling groundwater layers at different depths, the driving assembly drives the reaction force assembly to move, and the water inlet holes are arranged staggeredly or oppositely, so that the sealing assembly seals or opens the water inlet holes, thereby realizing the independent operation of the sealing assembly arranged in the sampling bottle and reducing energy loss. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the sampler for groundwater sampling in the site environmental investigation of the present utility model;

[0020] Figure 2 It is a cross-sectional view of the sampler for groundwater sampling in the site environmental investigation of the present utility model;

[0021] Figure 3 It is a schematic diagram of the overall structure of the sealing assembly of the present utility model.

[0022] Reference numerals: 1, sampling bottle; 2, support frame; 3, hanging ring; 4, water inlet hole; 5, sealing assembly; 51, fixing frame; 52, sealing plug; 53, spring; 6, driving assembly; 61, waterproof motor; 62, threaded rod; 7, reaction force assembly; 71, support ring; 72, reaction force magnet; 8, permeable hole; 9, inductor; 10, counterweight. Detailed Description of the Embodiments

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0024] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0025] Refer to Figures 1-3, the present utility model provides a sampler for groundwater sampling in site environmental investigation, which includes a sampling bottle 1, a support frame 2, a lifting ring 3, a water inlet hole 4, a sealing assembly 5, a driving assembly 6, a reaction force assembly 7, a water permeable hole 8, a sensor 9 and a counterweight 10.

[0026] Specifically, a plurality of the sampling bottles 1 are arranged inside the support frame 2 along the vertical direction. The sampling bottles 1 and the support frame 2, as well as adjacent sampling bottles 1, are all detachably connected. The sampling bottle 1 is provided with a plurality of water inlet holes 4. A sealing assembly 5 is arranged inside the sampling bottle 1, and the sealing assembly 5 is detachably connected to the water inlet hole 4. In addition, the present utility model further includes a driving assembly 6 and a reaction force assembly 7. The driving assembly 6 is arranged at the upper end of the support frame 2. The driving assembly 6 selectively drives the reaction force assembly 7 to move so as to be staggered or opposite to the water inlet hole 4, and further drives the sealing assembly 5 to block or open the water inlet hole 4. The staff binds the sampler vertically with a rope and puts it into the groundwater well.

[0027] The sealing assembly 5 includes a fixing frame 51, a sealing plug 52 and a spring 53. The fixing frame 51 is fixedly connected inside the sampling bottle 1. The spring 53 is a compression spring. Two ends of the spring 53 are respectively fixedly connected to one end of the fixing frame 51 and one end of the sealing plug 52. The sealing plug 52 is made of rubber material, and the other end of the sealing plug 52 is detachably connected to the water inlet hole 4.

[0028] The driving assembly 6 includes a waterproof motor 61 and a threaded rod 62. The output shaft of the waterproof motor 61 is in transmission connection with the threaded rod 62. The waterproof motor 61 is fixedly installed at the upper end of the support frame 2, and the output shaft of the waterproof motor 61 vertically penetrates the upper end of the support frame 2. The threaded rod 62 is rotatably connected to the support frame 2. When in use, the waterproof motor 61 drives the threaded rod 62 to rotate forward and backward.

[0029] The reaction force assembly 7 includes a support ring 71 and reaction force magnets 72. The support ring 71 is located on the periphery of the sampling bottle 1. A plurality of reaction force magnets 72 are fixedly connected to the support ring 71. The support ring 71 is slidably connected along the vertical direction of the support frame 2 and is in threaded connection with the threaded rod 62. The water inlet hole 4 is arranged on the side wall of the sampling bottle 1. A sealing magnet (not shown in the figure) is arranged inside the sealing plug 52. The forward and reverse rotation of the output shaft of the waterproof motor 61 can selectively drive the reaction force magnets 72 to be opposite to the sealing plug 52, and the magnetic poles of the opposite surfaces of the reaction force magnets 72 and the sealing magnet are the same. When in use, the waterproof motor 61 drives the threaded rod 62 to rotate, and then the support ring 71 slides on the threaded rod 62. When the reaction force magnets 72 fixedly connected to the support ring 71 slide to the position of the water inlet hole 4, the reaction force magnets 72 and the sealing magnet generate a repulsive force, further compressing the spring 53 fixedly connected to the sealing plug 52, and the water inlet hole 4 can be opened to allow groundwater to enter the sampling bottle 1.

[0030] The sampling bottle 1 is a tubular structure with an open upper end, and an external thread is provided at the upper end of the sampling bottle 1. The bottle body of the sampling bottle 1 extends downward to form an extension section, and an internal thread is provided on the inner side wall of the extension section. The adjacent extension section and the upper end of the sampling bottle 1 are detachably connected by threads. The connection between the uppermost sampling bottle 1 and the support frame 2 is a threaded connection. The threaded connection between the sampling bottles 1 enables all the sampling bottles 1 to maintain a non-rotating and stable state.

[0031] An inductor 9 is fixedly connected inside the sampling bottle 1. The inductor 9 is a water level sensor. A plurality of inductors 9 are arranged in one-to-one correspondence with the inner sides of the open upper ends of a plurality of sampling bottles 1. When the water inlet hole 4 is opened, groundwater flows into the sampling bottle 1. When the groundwater level touches the inductor 9, it indicates that the current sampling bottle 1 is full of groundwater. Then, the waterproof motor 61 is started to drive the threaded rod 62 to rotate, so that the reaction force assembly 7 moves away from the water inlet hole 4. The sealing plug 52 has no repulsive force generated by the like-pole magnets and automatically blocks the water inlet hole 4. The sampler continues to descend to other depths and repeats the previous operation to achieve one-time sampling of groundwater at different depths.

[0032] A counterweight 10 is provided at the lower end of the support frame 2 to increase the weight of the sampler and facilitate sinking during sampling.

[0033] The support frame 2 is provided with vertically penetrating water-permeable holes 8. When the sampler sinks and rises, the water-permeable holes 8 are provided to reduce the longitudinal water pressure generated by the water flowing up and down on the sampler, and to achieve smooth lifting and lowering of the sampler.

[0034] A hanging ring 3 is provided at the upper end of the support frame 2 to facilitate the staff to suspend the sampler using a rope.

[0035] The using process of the utility model: The staff binds the rope to the hanging ring 3 and vertically lowers the sampler into the groundwater well. During the lowering process, the depth of lowering is determined by the length of the released rope. When reaching a certain depth, the staff stops lowering and starts to collect groundwater. The waterproof motor 61 is started to drive the threaded rod 62 to rotate, so that the support ring 71 moves upward from the bottom. When the reaction magnet on the support ring 71 aligns with the water inlet hole 4 of the lowermost sampling bottle 1, the sealing plug 52 contracts towards the inside of the sampling bottle 1 and the water inlet hole 4 is opened. When the groundwater level touches the inductor 9, the waterproof motor 61 is started again to drive the threaded rod 62 to rotate, and the reaction force assembly 7 slides upward away from the water inlet hole 4, and the sealing plug 52 blocks the water inlet hole 4 to complete the first water intake. The sampler continues to descend to other depths and repeats the previous operation to achieve one-time sampling of groundwater at different depths. After the sampling is completed, the sampling bottles 1 are rotated in sequence to pour out the collected samples, and the waterproof motor 61 is started again to reversely rotate to slide the support ring 71 to the bottom to facilitate the next sampling.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, 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 on the present utility model.

[0037] The above-described embodiments are only descriptions of the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A groundwater sampler for site environmental investigation, comprising a support frame (2) and a sampling bottle (1), wherein a plurality of the sampling bottles (1) are arranged vertically inside the support frame (2), the sampling bottles (1) and the support frame (2) and adjacent sampling bottles (1) are detachably connected, the sampling bottle (1) is provided with a plurality of water inlet holes (4), and is characterized in that: The sampling bottle (1) is provided with a sealing component (5) inside, and the sealing component (5) is detachably connected to the water inlet (4), and also includes a driving component (6) and a reaction force component (7). The driving component (6) is provided at the upper end of the support frame (2), and the driving component (6) selectively drives the reaction force component (7) to move so as to achieve a staggered or relative arrangement with the water inlet (4), thereby driving the sealing component (5) to block or open the water inlet (4).

2. The groundwater sampler for site environmental investigation according to claim 1, characterized in that: The sealing assembly (5) comprises a fixing frame (51), a sealing plug (52) and a spring (53); the interior of the sampling bottle (1) is fixedly connected to the fixing frame (51); two ends of the spring (53) are respectively fixedly connected to one end of the fixing frame (51) and one end of the sealing plug (52); and the other end of the sealing plug (52) is detachably connected to the water inlet hole (4).

3. The groundwater sampler for site environmental investigation according to claim 2, characterized in that: The driving assembly (6) comprises a waterproof motor (61) and a threaded rod (62); the output shaft of the waterproof motor (61) is transmission-connected to the threaded rod (62); the waterproof motor (61) is fixedly mounted on the upper end of the support frame (2), and the output shaft of the waterproof motor (61) vertically penetrates the upper end of the support frame (2); and the threaded rod (62) is rotationally connected to the support frame (2).

4. The groundwater sampler for site environmental investigation according to claim 3, characterized in that: The reaction force assembly (7) comprises a support ring (71) and a reaction force magnet (72), wherein the support ring (71) is located on the peripheral side of the sampling bottle (1), and a plurality of reaction force magnets (72) are fixedly connected to the support ring (71), and the support ring (71) is slidably connected along the vertical direction of the support frame (2) and is threadedly connected to the threaded rod (62), the water inlet (4) is arranged on the side wall of the sampling bottle (1), and a sealing magnet is arranged in the sealing plug (52), and the output shaft of the waterproof motor (61) can selectively drive the reaction force magnet (72) to be arranged relative to the sealing plug (52) by forward and reverse rotation, and the magnetic poles of the reaction force magnet (72) and the opposite surface of the sealing magnet are the same.

5. The groundwater sampler for site environmental investigation according to claim 4, characterized in that: The sampling bottle (1) is a cylindrical structure with an open upper end, and the upper end of the sampling bottle (1) is provided with an external thread. The body of the sampling bottle (1) extends downward to form an extension section, and the inner wall of the extension section is provided with an internal thread. The adjacent extension sections and the upper end of the sampling bottle (1) are detachably connected by threads, and the uppermost sampling bottle (1) and the support frame (2) are threadedly connected.

6. The groundwater sampler for site environmental investigation according to claim 5, characterized in that: The inner side of the sampling bottle (1) is fixedly connected to a sensor (9), and a plurality of the sensors (9) are arranged one by one on the inner sides of the upper openings of a plurality of the sampling bottles (1).

7. The groundwater sampler for site environmental investigation according to claim 6, characterized in that: A counterweight (10) is provided at the lower end of the support frame (2) for increasing the weight of the sampler to facilitate sinking during sampling.

8. The groundwater sampler for site environmental investigation according to claim 7, characterized in that: The support frame (2) is provided with a vertically penetrating water-permeable hole (8).

9. The groundwater sampler for site environmental investigation according to claim 8, characterized in that: A lifting ring (3) is provided at the upper end of the support frame (2).

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