Seawater sampling device

Abstract

The utility model belongs to the technical field of sampling detection equipment, and particularly relates to a seawater sampling device. Comprising a lifting rope, a sampling tube, a connecting rope and a memory, the sampling tube comprises a sampling cylinder, a piston, a sealing cover and a rotating block; the upper end of the sampling cylinder is closed and connected with the lifting rope, the piston is mounted in the sampling cylinder in an up-down sliding manner, and the sealing cover covers an opening in the bottom of the sampling cylinder; a through hole is formed between the sealing cover and the rotating block; the upper end of the connecting rope penetrates through the through hole and is connected with the piston; the storer is mounted at the lower end of the connecting rope; the storage device is of a hollow shell structure and is filled with filler, and a movable opening capable of being opened and closed is formed in the bottom of the storage device. The seawater sampling device disclosed by the utility model is simple in structure and convenient to use, and can be used for efficiently and quickly sampling water resources at different depths.

Description

Technical Field

[0001] This utility model belongs to the technical field of sampling and testing equipment, and in particular relates to a seawater sampling device. Background Technology

[0002] Marine resource surveys often require sampling and analysis of water resources at different depths. Current sampling equipment has a simple structure and limited functions. When sampling seawater in deep water areas, it is difficult to ensure the stability of the sampling device at the sampling depth, making it difficult to control the sampling process and causing the sampling results to deviate from the actual situation. Utility Model Content

[0003] The purpose of this invention is to provide a seawater sampling device that can perform stable sampling and provide more reliable sampling results.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] A seawater sampling device includes a suspension rope 1, a sampling tube 2, a connecting rope 3, and a storage device 4;

[0006] Sampling tube 2 includes sampling cylinder 20, piston 21, cap 22, and rotating block 23;

[0007] The upper end of the sampling tube 20 is closed and connected to the suspension rope 1. The piston 21 is installed in the sampling tube 20 and can slide up and down. The cap 22 is placed on the bottom opening of the sampling tube 20.

[0008] The cover 22 is provided with a number of water inlet holes 22a connected to the inner cavity of the sampling tube 20. The rotating block 23 is rotatably set at the bottom of the cover. The rotating block 23 is provided with sampling holes 23a that can be connected to the water inlet holes 22a. During the rotation of the rotating block 23, the sampling holes 23a can be connected to or disconnected from the water inlet holes 22a.

[0009] A through hole is provided between the cover 22 and the rotating block 23. The upper end of the connecting rope 3 passes through the through hole and is connected to the piston 21; the memory 4 is installed at the lower end of the connecting rope 3.

[0010] The memory 4 has a hollow shell structure, which is filled with filler material. The bottom of the memory 4 has an openable opening.

[0011] In a further improvement or preferred embodiment of the aforementioned seawater sampling device, the filler is made of a water-absorbing and expanding material with a density higher than that of water.

[0012] In a further improvement or preferred embodiment of the aforementioned seawater sampling device, a solenoid valve switch for controlling the opening of the movable opening is provided at the movable opening.

[0013] In a further improvement or preferred embodiment of the aforementioned seawater sampling device, a piston limiting ring 25 is provided on the inner side of the sampling tube 20 near the lower opening.

[0014] In a further improvement or preferred embodiment of the aforementioned seawater sampling device, the top of the memory 4 is provided with a filling port 40 for replenishing filling material.

[0015] In a further improvement or preferred embodiment of the aforementioned seawater sampling device, the upper end of the sampling tube 20 is provided with an exhaust hole, and a sealing plug 200 is provided in the exhaust hole.

[0016] Further improvements or preferred embodiments of the aforementioned seawater sampling device also include a winding drum 5.

[0017] In a further improvement or preferred embodiment of the aforementioned seawater sampling device, the bottom of the memory 4 adopts a split structure, including a top connecting cover 41 and two quarter-spherical shells 42 located at the bottom of the connecting cover 41. The top of the quarter-spherical shells 42 is connected to the connecting cover 41 by a hinge structure 43, and the bottom of the quarter-spherical shells 42 is connected by a magnet 45.

[0018] In a further improvement or preferred embodiment of the aforementioned seawater sampling device, an airbag 46 is also provided on the top of the memory 4.

[0019] The seawater sampling device of this invention has a simple structure and is easy to use. It can be used to efficiently and quickly sample water resources at different depths. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a seawater sampling device;

[0021] Figure 2 This is a schematic diagram of the sampling tube;

[0022] Figure 3 This is a schematic diagram of the lower end structure of the sampling tube;

[0023] Figure 4 This is a schematic diagram of the memory structure in the embodiment;

[0024] The reference numerals in the attached figures include:

[0025] 1. Suspension rope, 2. Sampling tube, 20. Sampling cylinder, 21. Piston, 22. Sealing cap, 22a water inlet, 23. Rotating block, 23a sampling hole, 25. Piston limiting ring, 200. Connecting rope, 3. Storage device, 40. Filling port, 41. Connecting cap, 42. Quarter spherical shell, 43. Hinge structure, 45. Magnet, 46. Airbag, 5. Winding spool. Detailed Implementation

[0026] The present invention will be described in detail below with reference to specific embodiments.

[0027] like Figure 1 As shown, this utility model relates to a seawater sampling device, including a suspension rope 1, a sampling tube 2, a connecting rope 3, and a storage device 4;

[0028] The sling 1 is used to release the sampling device to the sampling depth of the water and maintain its position, the sampling tube is used to obtain seawater samples, and the storage device realizes automated sampling through its structure, while ensuring that the position of the sampling tube is relatively stable during the sampling process.

[0029] like Figure 2 , Figure 3 The sampling tube 2 includes a sampling cylinder 20, a piston 21, a cap 22, and a rotating block 23;

[0030] The upper end of the sampling tube 20 is closed and connected to the suspension rope 1. The piston 21 is installed in the sampling tube 20 and can slide up and down. The cap 22 is placed on the bottom opening of the sampling tube 20.

[0031] The cover 22 is provided with a number of water inlet holes 22a connected to the inner cavity of the sampling tube 20. The rotating block 23 is rotatably set at the bottom of the cover. The rotating block 23 is provided with sampling holes 23a that can be connected to the water inlet holes 22a. During the rotation of the rotating block 23, the sampling holes 23a can be connected to or disconnected from the water inlet holes 22a.

[0032] A through hole is provided between the cover 22 and the rotating block 23. The upper end of the connecting rope 3 passes through the through hole and is connected to the piston 21; the memory 4 is installed at the lower end of the connecting rope 3.

[0033] During use, the suspension rope 1 is continuously released to lower the sampling tube to the vicinity of the sampling point. Then, the suspension rope 1 is tightened, causing the upper end of the sampling tube 2 to be under tension. The storage container 4, whose total density is greater than that of water, continues to pull the piston 21 downward through the connecting rope 3, expelling the gas in the lower part of the sampling tube 20 and creating a negative pressure in the upper half of the sampling tube 20. Then, the storage container is opened by the switch structure on the storage container, releasing the filling material inside. This reduces the tension on the piston, breaking the negative pressure balance with the upper half. The piston 21 moves upward, and the sampling hole 23a on the seawater sample transfer block 23 and the water inlet hole 22a on the cap 22 enter the lower part of the sampling tube. After sampling, the suspension rope 1 is pulled upward to retrieve the sampling tube, and the transfer block is rotated to offset the sampling hole 23a and the water inlet hole 22a to prevent seawater sample leakage.

[0034] To facilitate control of the piston 21's downward movement to its extreme position, ensure sufficient sampling capacity, and protect the device structure, a piston limiting ring 25 is provided inside the sampling cylinder 20 near the lower opening. The piston limiting ring 25 controls the piston's extreme movement position, preventing the piston from disengaging, and also occupies the sampling space capacity, i.e., the space enclosed by the piston limiting ring 25 and the lower half of the sampling cylinder 20.

[0035] In order to realize the use of gravity to pull and release piston 21, in this utility model, memory 4 is a hollow shell structure, which is filled with filler material, and memory 4 has an openable opening at the bottom.

[0036] When the movable opening is closed, the filler material, which has a density greater than that of water, is stored in the inner cavity of the memory, giving the memory a large mass that pulls the piston 21 downward to generate negative pressure. When the movable opening is open, the filler material is lost from the opening, reducing the mass of the memory. Under the action of negative pressure, the piston moves upward to complete the sampling. By controlling the opening and closing of the movable opening, the piston can move up and down to complete the sampling.

[0037] The opening and closing of the movable opening can be controlled by either active or passive methods. The active method includes setting a solenoid valve switch or electromagnet structure at the movable opening to control its opening, and using a control cable or remote control to control the solenoid valve or electromagnet structure to achieve the opening and closing of the movable opening.

[0038] To simplify use, a passive control method can also be adopted, including using a water-absorbing and expanding material with a density higher than water to make the filler. When the filler is immersed in water for a period of time, the expansion of the filler will open the movable opening, causing the filler to be lost and thus reducing weight.

[0039] In particular, to facilitate rapid release, this embodiment also provides an open memory structure, such as... Figure 4 As shown, the bottom of the memory 4 adopts a split structure, including a top connecting cover 41 and two quarter-spherical shells 42 located at the bottom of the connecting cover 41. The top of the quarter-spherical shells 42 is connected to the connecting cover 41 by a hinge structure 43, and the bottom of the quarter-spherical shells 42 is attached by a magnet 45.

[0040] To facilitate quality control of the memory 4 and ensure that the bottom opening faces downwards, an airbag 46 is also provided on the top of the memory 4. The airbag 46 ensures that the top of the memory always faces upwards, and the quality of the memory can be flexibly controlled by adjusting both the quality of the airbag and the quality of the filling material.

[0041] To facilitate the addition of filler, a filling port 40 for replenishing filler is provided on the top of the memory 4.

[0042] Specifically, for ease of use and convenient control of the piston and its negative pressure space parameters, an exhaust port is provided at the upper end of the sampling cylinder 20, and a sealing plug 200 is installed in the exhaust port. The exhaust port is used to adjust the initial position of the piston, and after the collection is completed, the pressure is released by rotating the rotating block to prevent the intake of external air moisture and other factors that may affect the quality of the collected sample.

[0043] To facilitate the release device, a winding drum 5 for controlling the suspension rope 1 is also provided in this embodiment.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A seawater sampling device, characterized by, It comprises a lifting rope (1), a sampling tube (2), a connecting rope (3), and a storage (4). The sampling tube (2) comprises a sampling cylinder (20), a piston (21), a cover (22), and a rotating block (23). The upper end of the sampling cylinder (20) is closed and connected with the lifting rope (1), the piston (21) is slidably installed in the sampling cylinder (20), and the cover (22) is arranged at the bottom opening of the sampling cylinder (20). The cover (22) is provided with a plurality of water inlet holes (22a) connected to the inner cavity of the sampling cylinder (20), the rotating block (23) is rotatably arranged at the bottom of the cover, the rotating block (23) is provided with a sampling hole (23a) which can be connected with the water inlet hole (22a), and the sampling hole (23a) can be communicated or disconnected with the water inlet hole (22a) during the rotation of the rotating block (23). The cover (22) and the rotating block (23) are provided with a through hole, the upper end of the connecting rope (3) passes through the through hole and is connected with the piston (21), and the storage (4) is installed at the lower end of the connecting rope (3). The storage (4) is a hollow shell structure, which is filled with filling material, and the bottom of the storage (4) is provided with an openable and closable movable opening.

2. The seawater sampling device of claim 1, wherein, The filling material is made of water-absorbing and expanding material with a density higher than water.

3. The seawater sampling device of claim 1, wherein, An electromagnetic valve switch is arranged at the movable opening for controlling the opening of the movable opening.

4. The seawater sampling device of claim 1, wherein, A piston limiting ring (25) is arranged at the inner side of the sampling cylinder (20) near the lower end opening.

5. The seawater sampling device of claim 1, wherein, A filling port (40) is arranged at the top of the storage (4) for supplementing the filling material.

6. The seawater sampling device of claim 1, wherein, A gas discharge hole is arranged at the upper end of the sampling cylinder (20), and a sealing plug (200) is arranged in the gas discharge hole.

7. The seawater sampling device of claim 1, wherein, It also comprises a winding drum (5).

8. The seawater sampling device of claim 1, wherein, The bottom of the storage (4) adopts a split structure, comprising a connecting cover (41) at the top, and two quarter spherical shells (42) at the bottom of the connecting cover (41), the top of the quarter spherical shell (42) is connected with the connecting cover (41) through a hinge structure (43), and the bottom of the quarter spherical shell (42) is connected by a magnet (45).

9. The seawater sampling device of claim 1, wherein, An air bag (46) is arranged at the top of the storage (4).

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