Active multi-depth liquid sampling device
By designing an active multi-depth liquid sampling device, using torsion springs to control the inlet and outlet valves, and combining scale lines and a weight display, the problem of difficulty in extracting liquids at specific depths in existing technologies has been solved, achieving rapid and accurate liquid sampling.
Patent Information
- Application Number
- CN202520073500.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing liquid sampling instruments are difficult to extract liquids at specific depths in water, resulting in poor sample representativeness and failing to meet the needs of water conservancy and hydropower projects.
An active multi-depth liquid sampling device was designed. By setting an inlet valve, an exhaust pipe, a torsion spring, and a lifting rope on the sampling container, the opening of the inlet valve and the exhaust are controlled by the torque of the torsion spring. Combined with the scale line and weight display, accurate sampling is achieved.
It enables rapid and accurate sampling of liquids at specific depths, improving the efficiency of liquid sampling.
Smart Images
Figure CN223910558U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of active multi-depth liquid sampling devices, belong to liquid sampling equipment technical field. BACKGROUND
[0002] In water conservancy and hydropower projects, the sampling of liquid is one of the basic conditions required for hydraulic calculation. Currently, the instrument for liquid sampling in actual engineering is generally a common container. The common container can only extract the surface liquid in water, and it is difficult to extract the liquid in deeper place, so the representative of the sampled liquid is poor. Therefore, there is an urgent need for an instrument and method that can actively sample liquid at a specific depth. SUMMARY
[0003] The utility model discloses a kind of active multi-depth liquid sampling devices to overcome the shortcomings of prior art, can quickly, accurately sample multi-depth liquid, can more highly improve work efficiency.
[0004] The technical scheme of the utility model discloses a kind of active multi-depth liquid sampling devices: including sampling container, the top of sampling container is provided with water inlet and exhaust cylinder, water inlet is provided with water inlet valve at the lower part of sampling container, water inlet valve is rotatably connected with sampling container by pivot, torsional spring is arranged on pivot, one end of torsional spring is in contact with sampling container, the other end of torsional spring is in contact with the bottom of water inlet valve, the top of exhaust cylinder is provided with upward rotating opening exhaust valve, the lateral wall of sampling container is provided with lifting ring, lifting rope is connected on lifting ring.
[0005] Further, scale line is provided on the lifting rope.
[0006] Further, the head of lifting rope is connected with weight display disc.
[0007] Further, the area A1 of water inlet is less than the area A2 of water inlet valve.
[0008] Further, the area A3 of exhaust valve is less than the area A1 of water inlet.
[0009] The utility model discloses a kind of active multi-depth liquid sampling devices: can simply, quickly measure, sample specific depth liquid in actual engineering, lake or reservoir, improve the work efficiency of liquid sampling. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is the structure schematic view of a kind of active multi-depth liquid sampling device of the utility model;
[0011] Figure 2 It is the overhead schematic view of water inlet valve, pivot, torsional spring, exhaust valve arranged in sampling container. DETAILED DESCRIPTION
[0012] The utility model relates to a kind of active multi-depth liquid sampling device, as shown in figure Figure 1 Figure 2 As shown, including sampling container 1, the top of sampling container 1 is provided with water inlet 2 and exhaust cylinder 3, water inlet valve 4 is arranged in the sampling container 1 below water inlet 2, water inlet valve 4 is rotatably connected with sampling container 1 by rotating shaft 5, torsional spring 6 is arranged on rotating shaft 5, one end of torsional spring 6 is in contact with sampling container 1, the other end of torsional spring 6 is in contact with the bottom of water inlet valve 4, the top of exhaust cylinder 3 is provided with upward rotating opening exhaust valve 7, the sidewall of sampling container 1 is provided with lifting ring 8, lifting rope 9 is connected on lifting ring 8.
[0013] Further, scale line is arranged on lifting rope 9.
[0014] Further, weight display disc 10 is connected on the head of lifting rope 9.
[0015] Further, the area A1 of water inlet 2 is less than the area A2 of water inlet valve 4.
[0016] Further, the area A3 of exhaust valve 7 is less than the area A1 of water inlet 2.
[0017] The utility model discloses a kind of active multi-depth liquid sampling device, when sampling, sampling container 1 is submerged into the liquid to be sampled by lifting rope 9, according to the position of scale on lifting rope 9 and liquid surface 11, the depth H of sampling is judged, the height of sampling container 4 is h1, when reaching specified depth, the liquid pressure of this depth overcomes the torsional force of torsional spring 6 (the torsional force of torsional spring 6 increases with the increase of torsion angle, in actual design production process, the requirement that the resultant force to the inside of sampling container 1 is still greater than zero after water inlet valve 4 is normally opened a certain angle should also be considered, to ensure that sampling container 1 can normally take liquid), so that water inlet valve 4 opens, liquid enters the inside of sampling container 1 by water inlet 2, while the air in the inside of sampling container 1 is discharged outward by exhaust cylinder 3 and exhaust valve 7, the height of exhaust cylinder 3 is h2, according to weight display disc 10, the weight change of sampling container is judged, after weight display disc 10 shows stable, it indicates that sampling is completed.
[0018] The principle that sampling container 1 takes liquid of specific depth is as follows:
[0019] Suppose that the liquid sample of depth H is taken, after sampling container 1 is submerged to H depth, liquid acts on the top of water inlet valve 4, the liquid pressure of direction towards the inside of sampling container 1 ; the torsion force F2 generated by the torsion spring 6 acting on the water inlet valve 4, which is directed outward from the sampling container 1; the water pressure acting on the air outlet valve 7, which is directed inward to the sampling container 1 .
[0020] When the water inlet valve 4 is opened: the liquid to be sampled enters the sampling container 1, the air inside the sampling container 1 pushes open the air outlet valve 7, and the air inside the sampling container 1 is discharged from the air outlet valve 7.
[0021] At this time, force analysis is carried out: Torsion force
[0022] To ensure that the water inlet valve 4 is always closed before it is submerged to the specified sampling depth, the torsion of the torsion spring is set to be greater than the water pressure at the specified sampling depth , so that the water inlet valve 4 is just opened when it is submerged to a height h3 (h3 should not be too large) above the specified sampling depth H, and the sampling container 4 can normally take the liquid to be measured after it is submerged to the specified sampling depth H.
Claims
1. An active multi-depth liquid sampling device, characterized by, The utility model provides a sampling container, the top of sampling container (1) sets up water inlet (2) and exhaust cylinder (3), sets up water inlet valve (4) in sampling container (1) is located water inlet (2) below, water inlet valve (4) is rotatoryly connected with sampling container (1) through pivot (5), sets up torsional spring (6) on pivot (5), one end of torsional spring (6) is in contact with sampling container (1), the other end of torsional spring (6) is in contact with water inlet valve (4) bottom, the top of exhaust cylinder (3) sets up exhaust valve (7) that rotates and opens upwards, the lateral wall of sampling container (1) sets up lifting ring (8), lifting ring (8) is connected with pull rope (9) on.
2. An active multi-depth liquid sampling device as claimed in claim 1, characterized in that: The pull rope (9) is provided with a scale line.
3. An active multi-depth liquid sampling device as claimed in claim 2, characterized in that: The pull rope (9) is provided with a weight display disc (10) at the top.
4. The active multi-depth liquid sampling device of claim 1, wherein: The area A1 of the water inlet (2) is smaller than the area A2 of the water inlet valve (4).
5. An active multi-depth liquid sampling device as claimed in claim 1, characterized in that: The area A3 of the exhaust valve (7) is smaller than the area A of the water inlet (2) 1。