Hydrological test sampling device

Abstract

The utility model relates to the technical field of hydrological sampling, and discloses a hydrological test sampling device which comprises a sampling pipe and a fixing cap installed at the top of the sampling pipe in a threaded mode, the fixing cap can be detached from one side of the top of the sampling pipe so that the interior of the sampling pipe can be cleaned conveniently, and a vent hole is formed in the top of the fixing cap. A plurality of groups of ventilation holes are formed in the periphery of the top of the fixing cap, a plurality of groups of piston rods are arranged in the sampling pipe, rubber pistons are fixed at the bottoms of the piston rods, and a first sealing gasket and a second spring are arranged, so that water can extrude the first sealing gasket during sampling and move the first sealing gasket; a second spring can push a first sealing gasket to move after sampling is completed, so that the situation that water in the device possibly flows out of the water inlet end when the device is obliquely placed or vibrated is avoided, the problems of sample loss and storage device pollution caused by sample loss are solved, and the device is relatively convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrological sampling, in particular to a hydrological testing sampling device. Background Art

[0002] Hydrometry is a general term for various technical works that systematically collect and organize hydrological data. In a narrow sense, hydrometry refers to the observation of hydrological elements. The data of various hydrological elements are obtained through hydrological measurement. After analysis and calculation, the data are integrated to evaluate and rationally develop and utilize water resources, and provide a basis for the planning, design, construction, management and operation of engineering construction, as well as flood control and drought relief. For example, the elevation and scale of bridges and culverts, river navigation, urban water supply and drainage projects all use hydrological data such as water level, flow, and sediment as the basic basis for design.

[0003] At present, some existing hydrological testing sampling devices can complete sampling by placing the water inlet end of the device into water and pulling the piston rod to suck water into the device. However, when the device is tilted or vibrated, the internal water may flow out from the water inlet end, causing the loss of samples and contaminating the storage device, which is relatively inconvenient to use. For this reason, we propose a hydrological testing sampling device to solve or improve the above problems. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a hydrological test sampling device to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: it includes a sampling tube, a fixing cap threadedly installed on the top of the sampling tube, a piston rod arranged inside the sampling tube, a first partition plate fixed to the inner surface of the sampling tube, a second partition plate fixed to the bottom of the first partition plate, a third spring fixed to the inside of the second partition plate through a mounting frame, a second sealing gasket fixed to the bottom of the third spring, a second spring fixed to the bottom of the first partition plate, and a first sealing gasket fixed to the bottom of the second spring.

[0006] Furthermore, a water inlet hole is provided on the surface of the second partition plate at a position close to the top side, and a plurality of groups of water inlet holes are arranged circumferentially on the surface of the second partition plate.

[0007] Furthermore, a fixing block is fixed on the top of the fixing cap, and a first limiting column is inserted into the interior of the fixing block.

[0008] Furthermore, the surface of the piston rod is provided with limiting holes, and a plurality of limiting holes are provided on the surface of the piston rod at equal intervals, and the first limiting column can be inserted into the limiting holes.

[0009] Furthermore, a second limiting column is fixed on the surface of the first limiting column, and a first spring is fixed on the bottom of the first limiting column.

[0010] Furthermore, a rubber piston is fixed to the bottom of the piston rod, a piston handle is fixed to the top of the piston rod, and a vent hole is opened on the top of the fixing cap.

[0011] Compared with the prior art, the utility model has the following beneficial effects: by arranging the first sealing pad and the second spring, water can squeeze the first sealing pad and move the first sealing pad during sampling, so that water enters the interior of the sampling tube through the water inlet hole; when the sampling is completed, the second spring will push the first sealing pad to move, thereby preventing the internal water from flowing out from the water inlet end when the device is tilted or vibrated, thereby avoiding the loss of samples and the problem of contamination of the storage device caused by the loss of samples, and is relatively convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the fixed block of the utility model;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the sampling device of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the first sealing gasket of the utility model;

[0016] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixed block of the utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the second partition plate of the utility model.

[0018] In the figure: 1. sampling tube; 2. fixing cap; 3. piston rod; 4. fixing block; 5. first limiting column; 6. first spring; 7. second limiting column; 8. limiting hole; 9. first partition plate; 10. second spring; 11. second partition plate; 12. water inlet hole; 13. first sealing gasket; 14. third spring; 15. second sealing gasket. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-6, including a sampling tube 1, a fixing cap 2 threadedly mounted on the top of the sampling tube 1, the fixing cap 2 can be removed from one side of the top of the sampling tube 1, so as to facilitate the cleaning of the inside of the sampling tube 1, a vent hole is opened on the top of the fixing cap 2, and a plurality of vent holes are arranged in a circle on the top of the fixing cap 2, a piston rod 3 is arranged inside the sampling tube 1, a rubber piston is fixed to the bottom of the piston rod 3, the rubber piston is located inside the sampling tube 1 and is slidably connected to the sampling tube 1, a piston handle is fixed to the top of the piston rod 3, a first partition plate 9 is fixed to the inner surface of the sampling tube 1, an opening is set at the center position of the first partition plate 9, a second partition plate 11 is fixed to the bottom of the first partition plate 9, and the internal space of the second partition plate 11 is connected to the first partition plate 9. The opening at the center position of the plate 9 is connected to the interior of the sampling tube 1, the third spring 14 is fixed to the inside of the second partition plate 11 through a mounting frame, the second sealing gasket 15 is fixed to the bottom of the third spring 14, when there is no external interference, the third spring 14 will pull the second sealing gasket 15 so that it always keeps in close contact with the bottom of the second partition plate 11, the second spring 10 is fixed to the bottom of the first partition plate 9, the second spring 10 is located on one side of the outer surface of the second partition plate 11, the first sealing gasket 13 is fixed to the bottom of the second spring 10, the outer surface of the second partition plate 11 and the inner surface of the sampling tube 1 are both provided with annular protrusions, when there is no external interference, the second spring 10 will push the first sealing gasket 13 so that it always keeps in close contact with the top of the annular protrusion.

[0021] A water inlet hole 12 is provided on the surface of the second partition plate 11 near the top side. The water inlet holes 12 are arranged in a circle on the surface of the second partition plate 11. The internal space of the water inlet holes 12 is connected to the internal space of the second partition plate 11. A fixing block 4 is fixed on the top of the fixing cap 2. A first limiting column 5 is inserted into the fixing block 4. A limiting hole 8 is provided on the surface of the piston rod 3. The limiting holes 8 are equidistantly provided in a number of groups on the surface of the piston rod 3. The first limiting column 5 can be inserted into the limiting hole 8. When the first limiting column 5 is inserted into the limiting hole 8, the position of the piston rod 3 can be limited to prevent the piston rod 3 from moving itself, thereby preventing the rubber piston from moving and pushing out the water in the sampling tube 1 due to squeezing the piston rod 3 when taking the device or moving the device, thereby preventing the sample from being lost due to the movement of the piston rod 3 during transportation. A second limiting column 7 is fixed on the surface of the first limiting column 5. A first spring 6 is fixed at the bottom, one end of the first spring 6 is fixed to the bottom of the first limiting column 5, and the other end is fixed to the surface of the fixing block 4. When there is no external interference, the first spring 6 will pull the first limiting column 5 to keep it inserted into the limiting hole 8, thereby maintaining the limiting state of the piston rod 3. When the first limiting column 5 is moved, the first limiting column 5 will drive the fixed second limiting column 7 to move. When the second limiting column 7 moves to a suitable position, the first limiting column 5 can be rotated to make the first limiting column 5 drive the second limiting column 7 to rotate. When the second limiting column 7 rotates to the side of the surface of the fixing block 4 where the bottom is located, the first limiting column 5 is released, so that the bottom of the second limiting column 7 can be against the surface of the fixing block 4, so that the second limiting column 7 limits the position of the first limiting column 5 to prevent the first limiting column 5 from moving. At this time, the first limiting column 5 no longer limits the position of the piston rod 3 through the limiting hole 8, and the piston rod 3 can move freely.

[0022] Working principle: when sampling is required, insert one end of the water inlet of the sampling tube 1 into the water to be sampled and pull the piston rod 3 to make the piston rod 3 drive the rubber piston head fixed at the bottom to move, so that water enters from the side of the water purification port and squeezes one side of the first sealing gasket 13, so that the first sealing gasket 13 moves and squeezes the second spring 10 to deform the second spring 10. When the first sealing gasket 13 moves to one side of the water inlet hole 12, water will enter the inside of the second partition plate 11 through the water inlet hole 12, thereby completing the sampling of water. At this time, the second spring 10 will push the first sealing gasket 13 to move back to its initial position and keep it close to the top of the annular protrusion. At this time, the water inside the sampling tube 1 cannot flow out through the side of the first sealing gasket 13. At the same time, the third spring 14 will pull the second sealing gasket 15 to make it close to the bottom of the second partition plate 11. Thereby, the bottom side of the second partition plate 11 is sealed to prevent water from flowing out through the bottom side of the second partition plate 11, thereby preventing internal water from flowing out from the water inlet end when the device is tilted or vibrated, thereby avoiding the loss of samples and the problem of contamination of the storage device caused by sample loss. It is relatively convenient to use. When the sample inside the sampling tube 1 needs to be taken out, the first limiting column 5 is pulled to move the first limiting column 5 out of the inside of the limiting hole 8, which can push the piston rod 3 to move, so that the piston rod 3 drives the rubber piston head to move, so that the sample liquid inside the sampling tube 1 squeezes the top side of the second sealing pad 15, and the second sealing pad 15 moves to the side away from the second partition plate 11, so that the sample liquid flows out through the gap between the second sealing pad 15 and the second partition plate 11 and flows out through one end of the sampling tube 1, thereby completing the removal of the sample.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrological testing sampling device, characterized in that: It comprises a sampling tube (1), a fixing cap (2) threadedly mounted on the top of the sampling tube (1), and a piston rod (3) arranged inside the sampling tube (1); A first partition plate (9), the first partition plate (9) being fixed to the inner surface of the sampling tube (1); A second partition plate (11), the second partition plate (11) is fixed to the bottom of the first partition plate (9); A third spring (14), the third spring (14) being fixed inside the second partition plate (11) via a mounting frame; A second sealing gasket (15), the second sealing gasket (15) is fixed to the bottom of the third spring (14); A second spring (10), the second spring (10) is fixed to the bottom of the first partition plate (9); A first sealing gasket (13), the first sealing gasket (13) is fixed to the bottom of the second spring (10).

2. A hydrological testing sampling device according to claim 1, characterized in that: A water inlet hole (12) is provided on the surface of the second partition plate (11) at a position close to the top side, and a plurality of groups of water inlet holes (12) are arranged in a circumferential manner on the surface of the second partition plate (11).

3. A hydrological testing sampling device according to claim 1, characterized in that: A fixing block (4) is fixed on the top of the fixing cap (2), and a first limiting column (5) is inserted into the interior of the fixing block (4).

4. A hydrological testing sampling device according to claim 3, characterized in that: The surface of the piston rod (3) is provided with a limiting hole (8), and a plurality of limiting holes (8) are provided on the surface of the piston rod (3) at equal intervals. The first limiting column (5) can be inserted into the limiting hole (8).

5. A hydrological testing sampling device according to claim 1, characterized in that: A second limiting column (7) is fixed on the surface of the first limiting column (5), and a first spring (6) is fixed on the bottom of the first limiting column (5).

6. A hydrological testing sampling device according to claim 1, characterized in that: A rubber piston is fixed to the bottom of the piston rod (3), a piston handle is fixed to the top of the piston rod (3), and a vent hole is opened on the top of the fixing cap (2).

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