A stratified-pumping sampler

Abstract

The utility model discloses a layered water pumping sampler relates to sampler technical field, including the barrel, its inside has the coaxial arrangement of a plurality of sampling cavities, extrusion cavity is set up in the inner top wall of each sampling cavity, and is tapered along the inner top wall direction of sampling cavity, negative pressure spare, its axial wear in the barrel, when each sampling cavity forms directional negative pressure when the axial displacement of negative pressure spare, a plurality of liquid suction members, and each liquid suction member is coaxially arranged on the negative pressure spare, and is distributed in the corresponding sampling cavity, and the liquid suction member includes: flexible adsorption part, its ring sets up in the outer periphery of liquid suction member, and the outer edge of flexible adsorption part is in normal state and tightly touches the sampling cavity inner wall. The utility model discloses through the cooperation of negative pressure spare and liquid suction member, has guaranteed efficient water sample collection and cleaning process, and negative pressure spare makes water sample to be able to orderly collect from different levels, and liquid suction member effectively removes the residual old sample liquid through the wiping and adsorption effect, thereby guarantees the purity and reliability of new sample liquid.

Description

Technical Field

[0001] This utility model relates to the field of sampler technology, specifically a stratified water pumping sampler. Background Technology

[0002] With the development of liquid sampling technology, sampling devices are being used more and more widely, especially in situations where multiple extractions and analyses of liquid samples are required.

[0003] While existing sampling devices can perform basic liquid sampling, they have problems such as excessive residual liquid and uneven sampling when processing samples. In particular, when sampling repeatedly, too much old sample liquid remaining in the sampling chamber can lead to cross-contamination of the samples, thus affecting the accuracy of subsequent analysis results. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a stratified water sampling device.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A stratified pumping sampler, comprising:

[0007] The cylindrical body has multiple sampling chambers arranged coaxially inside;

[0008] The squeezing chamber is located on the inner top wall of each sampling chamber and gradually narrows along the inner top wall of the sampling chamber.

[0009] A negative pressure element is axially inserted into the cylinder. When the negative pressure element moves upward axially, a directional negative pressure is formed in each sampling chamber.

[0010] Multiple liquid suction elements are coaxially arranged on a negative pressure element and distributed within corresponding sampling chambers. The liquid suction elements include:

[0011] The flexible adsorption part is arranged around the outer periphery of the liquid absorption member, and the outer edge of the flexible adsorption part is in close contact with the inner wall of the sampling chamber under normal conditions.

[0012] The guide section is tapered and located at the top of the liquid suction component, with its outer edge parallel to the top of the flexible adsorption section.

[0013] When the negative pressure component moves axially upward inside the cylinder to extract new sample liquid, the flexible adsorption part of the liquid absorption component scrapes and adsorbs the residual old sample liquid on the inner wall of the sampling chamber and enters the squeezing chamber. The flexible adsorption part is deformed by strong radial squeezing of the conical sidewall of the squeezing chamber, and the residual old sample liquid squeezed out is collected by the guide part and discharged into the negative pressure component and out of the cylinder.

[0014] Preferably, the outer edge of the liquid-absorbing element is arranged parallel to the inner wall of the squeezing chamber, and the gap between them allows the flexible adsorption part to be squeezed and deformed.

[0015] Preferably, the thickness of the flexible adsorption part of the liquid absorption member gradually increases from thin to thick along the shrinking direction of the extrusion cavity, so that the flexible adsorption part forms a graded extrusion within the gap.

[0016] Preferably, the negative pressure component includes:

[0017] Multiple pistons are arranged axially in the corresponding sampling chamber and slide along the height direction of each sampling chamber. Each liquid aspiration element is arranged axially on the top of the corresponding piston.

[0018] A one-way tube is axially inserted into the cylinder, and each piston is axially fixed at equal intervals outside the one-way tube.

[0019] Multiple drainage holes are equidistantly arranged in a ring outside the one-way pipe, and the bottom converging point of the guide section is parallel to the drainage holes.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention ensures efficient water sample collection and cleaning through the cooperation of a negative pressure component and a liquid suction component. The negative pressure component allows water samples to be collected in an orderly manner from different layers, while the liquid suction component effectively removes residual old sample liquid through scraping and adsorption, thereby ensuring the purity and reliability of the new sample liquid. Attached Figure Description

[0022] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 For the present utility model Figure 2 Another schematic diagram of the state structure.

[0026] The diagram is labeled as follows: 1. Cylinder; 11. Extrusion chamber; 2. Negative pressure component; 21. Piston; 22. One-way pipe; 23. Drain hole; 3. Suction component. Detailed Implementation

[0027] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0028] Example

[0029] like Figures 1-3 As shown, a stratified pumping sampler includes:

[0030] The cylinder 1 has multiple sampling chambers arranged coaxially inside;

[0031] The extrusion chamber 11 is located on the inner top wall of each sampling chamber and gradually narrows along the inner top wall of the sampling chamber.

[0032] The negative pressure component 2 is axially inserted inside the cylinder 1. When the negative pressure component 2 moves upward axially, a directional negative pressure is formed in each sampling chamber.

[0033] Negative pressure component 2 includes:

[0034] Multiple pistons 21 are axially arranged in the corresponding sampling chamber and slide along the height direction of each sampling chamber. Each liquid aspiration element 3 is axially arranged on the top of the corresponding piston 21.

[0035] One-way tube 22 is axially inserted inside cylinder 1, and each piston 21 is axially fixed at equal intervals outside one-way tube 22.

[0036] Multiple drain holes 23 are equidistantly arranged in a ring outside the one-way pipe 22, and the bottom of the guide section converges parallel to the drain holes 23.

[0037] The cylinder 1 is fixed by connecting it to the external support. The top of the one-way tube 22 in the negative pressure component 2 is connected to the cylinder extension end or to the handle to form an electric or manual water pumping sampling method. When the one-way tube 22 is lifted, each piston 21 moves upward in the corresponding sampling chamber to pump water from different layers into each sampling chamber for collection.

[0038] Multiple liquid suction elements 3 are coaxially arranged on the negative pressure element 2 and distributed in the corresponding sampling chambers. Each liquid suction element 3 includes:

[0039] The flexible adsorption part is arranged around the outer periphery of the liquid absorption member 3, and the outer edge of the flexible adsorption part is in close contact with the inner wall of the sampling chamber under normal conditions.

[0040] The flexible absorbent part is made of sponge, which has excellent water absorption and elasticity, allowing it to regain its shape while absorbing water. Other materials with good water absorption and elasticity, such as superabsorbent materials, can also be used for the flexible absorbent part.

[0041] The guide section is tapered and located at the top of the liquid suction member 3, and the outer edge of the guide section is parallel to the top of the flexible adsorption section.

[0042] When the negative pressure component 2 moves axially upward in the cylinder 1 to extract new sample liquid, the flexible adsorption part of the liquid absorption component 3 scrapes and adsorbs the residual old sample liquid on the inner wall of the sampling chamber and enters the squeezing chamber 11. The flexible adsorption part is deformed by the radial strong squeezing of the conical side wall of the squeezing chamber 11, and the residual old sample liquid that is squeezed out is collected by the guide part and discharged into the negative pressure component 2 and discharged out of the cylinder 1.

[0043] During the sampling process, in order to prevent excessive residual wastewater from the previous sampling from affecting the detection structure, and to reduce the mixing of old sample liquid with new sample liquid on the inner wall of the sampling chamber, each piston 21 moves upward in its corresponding sampling chamber. Before the piston 21 passes through the inner wall path of the sampling chamber, each suction component 3 scrapes the inner wall path of the sampling chamber through the flexible adsorption part to adsorb the residual old sample liquid. As the piston 21 moves upward, the flexible adsorption part enters the squeezing chamber 11 and is subjected to strong radial squeezing deformation by its conical sidewall. The squeezed-out residual old sample liquid is collected by the guide part and discharged from the cylinder 1 through multiple drain holes 23 into the negative pressure component 2. This effectively removes the squeezed old sample liquid and avoids mixing with new sample liquid, thereby improving the accuracy and reliability of sampling.

[0044] The outer edge of the liquid suction member 3 is parallel to the inner wall of the extrusion chamber 11, and the gap between them allows the flexible adsorption part to be extruded and deformed. The thickness of the flexible adsorption part of the liquid suction member 3 gradually transitions from thin to thick along the tapering direction of the extrusion chamber 11, so that the flexible adsorption part forms a graded extrusion within the gap.

[0045] As the negative pressure component 2 moves upward, the flexible adsorption part of the liquid suction component 3 is subjected to radial compression from the sidewall of the squeezing chamber 11. Since the thickness of the flexible adsorption part gradually increases along the tapering direction of the squeezing chamber 11, its deformation process is gradual.

[0046] Under the action of the squeezing chamber 11, the flexible adsorption part of the liquid suction member 3 undergoes progressive, graded squeezing. The thicker part is squeezed first; in the initial stage of the upward movement of the negative pressure member 2, the thicker part experiences greater radial squeezing force. Due to the structural design of the thicker part, it provides stronger contact and squeezing forces, helping to quickly push the remaining liquid in the sampling chamber into the squeezing chamber 11. The thinner part is squeezed later; only after the thicker part begins to deform and gradually expel most of the liquid is the thinner part squeezed and moderately deformed, thus achieving a more precise scraping action. Because the thinner part is relatively soft, it can flexibly contact the inner wall, further ensuring that liquid in every corner is thoroughly removed. Due to the graded squeezing action of the flexible adsorption part, the old sample liquid will not mix with the new sample liquid during the removal process, thus ensuring the purity of the sample each time it is sampled. As the squeezing process continues, the liquid is guided into the squeezing chamber 11, avoiding cross-contamination of the liquid in the sampling chamber.

[0047] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A stratified water sampling device, characterized in that, include: The cylindrical body (1) has multiple sampling chambers arranged coaxially inside; The squeezing chamber (11) is located on the inner top wall of each sampling chamber and gradually narrows along the inner top wall of the sampling chamber. The negative pressure component (2) is axially inserted inside the cylinder (1). When the negative pressure component (2) moves upward axially, a directional negative pressure is formed in each sampling chamber. Multiple suction elements (3) are coaxially arranged on the negative pressure element (2) and distributed in the corresponding sampling chambers. The suction elements (3) include: The flexible adsorption part is arranged around the outer periphery of the liquid absorption part (3), and the outer edge of the flexible adsorption part is in close contact with the inner wall of the sampling chamber under normal conditions. The guide section is tapered and located at the top of the liquid suction member (3), and the outer edge of the guide section is parallel to the top of the flexible adsorption section; When the negative pressure component (2) moves axially upward in the cylinder (1) to extract new sample liquid, the flexible adsorption part of the liquid absorption component (3) scrapes and adsorbs the residual old sample liquid on the inner wall of the sampling chamber and enters the squeezing chamber (11). The flexible adsorption part is deformed by the radial strong squeezing of the conical side wall of the squeezing chamber (11), and the residual old sample liquid that is squeezed out is collected by the guide part and introduced into the negative pressure component (2) and discharged out of the cylinder (1).

2. The stratified pumping sampler according to claim 1, characterized in that: The outer edge of the liquid suction member (3) is arranged parallel to the inner wall of the squeezing chamber (11), and the gap between them is left for the flexible adsorption part to be squeezed and deformed.

3. A stratified pumping sampler according to claim 1, characterized in that: The thickness of the flexible adsorption part of the liquid absorption member (3) gradually increases from thin to thick along the shrinking direction of the extrusion chamber (11), so that the flexible adsorption part forms a graded extrusion in the gap.

4. A stratified water sampling device according to claim 1, characterized in that: The negative pressure component (2) includes: Multiple pistons (21) are axially arranged in the corresponding sampling chamber and slide along the height direction of each sampling chamber. Each liquid aspiration element (3) is axially arranged on the top of the corresponding piston (21). One-way tube (22) is axially inserted inside cylinder (1), and each piston (21) is axially fixed at equal intervals outside one-way tube (22); Multiple drain holes (23) are equidistantly arranged in a ring outside the one-way pipe (22), and the bottom of the guide section converges parallel to the drain holes (23).

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