Sampling device for water sample detection

Abstract

The utility model is applicable to the technical field of water sample detection, and provides a sampling device for water sample detection, which comprises a sample tank, the sample tank can be divided into a plurality of partitions, and a piston group is arranged in each partition to facilitate multi-layer sampling; the piston group is in sliding connection with the sample tank, and a water inlet is formed in the bottom of the sample tank, so that one-way entering of sample liquid is realized; the sample tank can be provided with a limiting set capable of limiting movement of the piston set, the limiting set comprises a driving part vertically moving up and down and an abutting part driven by the driving part to rotate, the abutting part abuts against the piston set, the sampling time and position can be controlled, and fixed-depth sampling is achieved.

Description

Technical Field

[0001] This utility model relates to the field of water sample testing technology, and in particular to a sampling device for water sample testing. Background Technology

[0002] Currently, in engineering surveys and water resource surveys, it is sometimes necessary to conduct stratified water sampling at different depths to test the chemical composition of water samples at different depths. Typically, there are various methods for sampling groundwater in exploration wells, including pumping, fixing water bottles to wooden sticks for sampling, and lowering samples with horizontal counterweights and ropes. These sampling devices cannot guarantee that water from depths other than the sampling depth will not be poured in before reaching the predetermined depth, resulting in samples that are not from the water body at the predetermined depth, or are a mixture of water samples from other depths and the sampling depth.

[0003] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this invention is to provide a sampling device for water sample testing, which can achieve quantitative sampling of water samples; realize multi-level sampling, and improve sampling efficiency and sampling effect.

[0005] To achieve the above objectives, this utility model provides a sampling device for water sample testing, comprising: a sample container; a piston assembly slidably connected to the sample container, wherein the bottom of the sample container is provided with a water inlet; the sample container is provided with a limiting group that can restrict the movement of the piston assembly, the limiting group comprising a driving member that moves vertically up and down and an abutting member that is driven to rotate by the driving member, the abutting member abutting against the piston assembly.

[0006] According to the sampling device for water sample testing of this utility model, the piston assembly includes a piston whose outer contour is in complete contact with the inner wall of the sample tube and is fixed to the piston and slidably connected to the piston, and the abutment member restricts the upward movement of the piston shaft.

[0007] According to the sampling device for water sample testing of this utility model, the abutment is rotatably connected to a fixed cylinder fixed to the top of the sample container, a limiting rod is fixedly connected to the fixed cylinder, and a driving member is slidably connected to the limiting rod, the driving member being a sliding pin.

[0008] According to the sampling device for water sample testing of this utility model, one end of the sliding pin is provided in the sliding groove, the sliding groove is spirally provided on the outer wall of the rotating part, the rotating part is rotatably connected to the rotating shaft fixed in the fixed cylinder, and the bottom of the rotating part is fixedly connected to the abutment.

[0009] According to the sampling device for water sample testing of this utility model, the abutting member is configured as a baffle, and an abutting plate is abutting below the baffle, and the abutting plate is fixed to the piston shaft.

[0010] According to the sampling device for water sample testing of this utility model, the bottom of the sample container is rotatably connected to a water cover that allows liquid to enter in one direction.

[0011] This utility model provides a sampling device for water sample testing, comprising: a sample container, which can be configured into several compartments, each compartment being equipped with a piston assembly for facilitating multi-level sampling; a piston assembly slidably connected to the sample container; the bottom of the sample container having a water inlet for unidirectional entry of sample liquid; and a limiting group for restricting the movement of the piston assembly, the limiting group comprising a vertically moving drive member and a stop member driven to rotate by the drive member, the stop member abutting against the piston assembly, thereby controlling the sampling time and position to achieve fixed-depth sampling;

[0012] The beneficial effects of this utility model are: quantitative sampling of water samples can be achieved through the sample tank and piston assembly; fixed-depth sampling can be achieved through the limiting assembly; and multi-level sampling can be achieved through the separated sample tanks, thereby improving sampling efficiency and sampling effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0015] Figure 3 This is a schematic diagram of the limiting assembly structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the rotating component structure of this utility model;

[0017] In the diagram, 1-sample container, 11-water cover, 2-piston shaft, 21-abutment plate, 22-piston, 3-rotating component, 31-slide groove, 32-baffle, 4-sliding pin, 5-fixed cylinder, 51-rotating shaft, 52-accommodating groove, 53-limiting rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0019] See Figures 1 to 4This utility model provides a sampling device for water sample testing. The sampling device includes: a sample tank 1, which can be divided into several compartments, each compartment being equipped with a set of pistons 22 for multi-level sampling; the set of pistons 22 slidably connected to the sample tank 1; the bottom of the sample tank 1 is provided with a water inlet to enable unidirectional entry of sample liquid; the sample tank 1 is provided with a limiting group that can restrict the movement of the set of pistons 22, the limiting group including a driving member that moves vertically up and down and an abutting member that is driven to rotate by the driving member; the abutting member abuts against the set of pistons 22, which can control the sampling time and position to achieve fixed-depth sampling.

[0020] See Figures 1 to 4 Preferably, the piston 22 assembly of this utility model includes a piston 22 whose outer contour is in complete contact with the inner wall of the sample tube and is disposed inside the sample container 1, and a piston shaft 2 that is fixed to the piston 22 and slidably connected to the piston 22. The abutment member restricts the piston shaft 2 from moving upward and the piston 22 from moving downward, which can vent the gas in the sample container 1 and form a negative pressure state. When the piston 22 moves upward, it can draw the sample liquid into the sample container 1 to complete the sampling.

[0021] See Figures 1 to 4 In addition, the abutment of this utility model is rotatably connected to the fixed cylinder 5 fixed to the top of the sample container 1. A limiting rod 53 is fixedly connected to the fixed cylinder 5. A driving member is slidably connected to the limiting rod 53. The driving member is a sliding pin 4. The limiting rod 53 can restrict the vertical up and down movement of the sliding pin 4.

[0022] See Figures 1 to 4 Furthermore, one end of the sliding pin 4 of this utility model is disposed in the sliding groove 31, the sliding groove 31 is spirally disposed on the outer wall of the rotating member 3, the rotating member 3 is rotatably connected to the rotating shaft 51 fixed in the fixed cylinder 5, and an abutment is fixedly connected to the bottom of the rotating member 3; the abutment is a baffle 32, and an abutment plate 21 is abutted below the baffle 32, and the abutment plate 21 is fixedly connected to the piston shaft 2;

[0023] In the specific implementation process: a float (capable of floating on the water surface) is tied to the sliding pin 4. When the float pulls the sliding pin 4 upward, the sliding pin 4 moves in the sliding groove 31, which can drive the rotating part 3 to rotate. The rotating part 3 drives the baffle 32 to rotate, which can drive the baffle 32 to disengage from the abutment plate 21, thereby realizing the sampling work.

[0024] See Figures 1 to 4 Even better, the bottom of the sample container 1 of this utility model is rotatably connected to a water cover 11 for one-way liquid entry. When the sample container 1 is filled with liquid, the water cover 11 is pressed tightly against the bottom of the sample container 1 to ensure no leakage.

[0025] Working principle: Before sampling, the float and the fixing pin are tied together with a connecting rope of the corresponding length according to the sampling depth. See [link / reference]. Figure 2 Two floats can be tied according to the two sampling depths; press the piston shaft 2, the piston 22 is set at the bottom of the sample tank 1, and an elastic rope is fixed between the piston 22 and the top of the sample tank 1. At this time, rotate the baffle 32 to drive the baffle 32 to be set above the two abutment plates 21, ensuring that the piston shaft 2 does not move; through the external suspension rope, the sample tank 1 is placed in the water. When the sampling depth is reached, the float pulls the sliding pin 4, the sliding pin 4 moves up, and drives the rotating part 3 to rotate. At this time, the fixed cylinder 5 is provided with a receiving groove 52, which can not interfere with the rotation of the baffle 32. The baffle 32 is separated from the abutment plate 21. Under the action of the elastic rope, the piston 22 moves up, which can realize water pumping and sampling.

[0026] In summary, this utility model provides a sampling device for water sample testing, comprising: a sample container, which can be divided into several compartments, each compartment being equipped with a piston assembly for facilitating multi-level sampling; piston assemblies slidably connected to the sample container; a water inlet at the bottom of the sample container for unidirectional entry of sample liquid; and a limiting group on the sample container that restricts the movement of the piston assembly, the limiting group comprising a vertically moving drive member and a stop member driven to rotate by the drive member, the stop member abutting against the piston assembly, thereby controlling the sampling time and position to achieve fixed-depth sampling. The beneficial effects of this utility model are: quantitative sampling of water samples can be achieved through the sample container and piston assembly; fixed-depth sampling can be achieved through the limiting group; and multi-level sampling can be achieved through the compartmentalized sample container, improving sampling efficiency and effectiveness.

[0027] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A sampling device for water sample testing, characterized in that, include: Sample container; A piston assembly is slidably connected to a sample container, the bottom of which is provided with a water inlet; The sample container may be provided with a limiting group that can restrict the movement of the piston assembly. The limiting group includes a driving member that moves vertically up and down and an abutting member that is driven to rotate by the driving member. The abutting member abuts against the piston assembly.

2. The sampling device for water sample testing according to claim 1, characterized in that, The piston assembly includes a piston whose outer contour is in complete contact with the inner wall of the sample tube and is located inside the sample container, and a piston shaft that is fixed to the piston and slidably connected to the piston. The abutment member restricts the upward movement of the piston shaft.

3. The sampling device for water sample testing according to claim 2, characterized in that, The abutment is rotatably connected to a fixed cylinder fixed to the top of the sample container. A limit rod is fixed to the fixed cylinder, and a driving component is slidably connected to the limit rod. The driving component is a sliding pin.

4. The sampling device for water sample testing according to claim 3, characterized in that, One end of the sliding pin is located in the sliding groove, which is spirally located on the outer wall of the rotating component. The rotating component is rotatably connected to a rotating shaft fixed in a fixed cylinder, and an abutment is fixedly connected to the bottom of the rotating component.

5. The sampling device for water sample testing according to claim 4, characterized in that, The abutment is configured as a baffle, and an abutment plate is abutted below the baffle. The abutment plate is fixed to the piston shaft.

6. The sampling device for water sample testing according to claim 1, characterized in that, The bottom of the sample container is rotatably connected to a water cap that allows liquid to enter in one direction.

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