A drop-off water sample sampling device

Abstract

The utility model relates to sampling device technical field, and disclose a kind of water sample sampling device of throwing, including sampling cylinder, the inner wall of sampling cylinder is fixedly connected with trapezoidal cover, the top of sampling cylinder is fixedly connected with outer thread pipe, the surface of outer thread pipe is threadedly connected with inner thread pipe, the inner wall top of inner thread pipe is fixedly connected with inner cover, the inner wall bottom of inner cover is fixedly connected with spring, the top of inner thread pipe is provided with locating groove. The utility model is through setting trapezoidal cover and spring and locking mechanism of limit stopper linkage, the quick throwing of sampling cylinder and sealing locking are realized, when operating, sampling cylinder is put into water source by conveying line, the large end flow guide design of trapezoidal cover makes water flow smoothly into cylinder, while spring pushes limit stopper and inserts into clamping groove, convenient to separate sampling cylinder and connecting device after water sampling work, solve the fixing of conventional sampling through rope, not convenient for subsequent separation work.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, specifically a drop-type water sample sampling device. Background Technology

[0002] Water sampling is a crucial step in water quality monitoring and research, involving the collection of water samples to analyze their physical, chemical, and biological characteristics. Appropriate methods and tools must be selected based on the type of water source (e.g., river, lake, groundwater) and the monitoring objectives. For example, flow velocity samplers are commonly used for river sampling, while stratified samplers may be employed to obtain samples from different depths in lakes. During the sampling process, it is essential to ensure sample representativeness, avoid contamination and disturbance, and record information such as sampling time, location, and environmental conditions.

[0003] In the existing technology, the retrieval process of drop-type sampling devices has significant drawbacks: First, the rope fixing method is crude, usually directly tied to the surface of the sampling tube, lacking a quick disassembly structure, which requires manual untying or cutting during retrieval, making the operation cumbersome and easily damaging to the sampling tube; Second, underwater positioning and retrieval are difficult, especially when the sampling tube sinks into deep water or areas with rapid currents, the rope is easily entangled in underwater debris, and manual retrieval requires a lot of time. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a dispensing water sample collection device, including a sampling cylinder, a trapezoidal sleeve fixedly connected to the inner wall of the sampling cylinder, an externally threaded tube fixedly connected to the top of the sampling cylinder, an internally threaded tube threadedly connected to the surface of the externally threaded tube, an inner sleeve fixedly connected to the top of the inner wall of the internally threaded tube, a spring fixedly connected to the bottom of the inner wall of the inner sleeve, a positioning groove formed at the top of the internally threaded tube, a retaining groove formed at the top of the inner wall of the internally threaded tube, a limiting block engaging inside the retaining groove, a fixing ring fixedly connected to the top of the limiting block, a connecting ring sleeved on the surface of the fixing ring, and a conveyor line fixedly connected to the surface of the connecting ring.

[0005] Through the above technical solution, the integrated design of the sampling cylinder, trapezoidal sleeve, threaded tube assembly, and spring and limit block locking mechanism achieves the integration of water sample collection and sealing. The flow guiding structure of the trapezoidal sleeve optimizes the water flow entry efficiency, the threaded tube screwing method simplifies the sealing operation, and the linkage between the spring and the limit block enables automatic locking and rapid unlocking.

[0006] As a further improvement to the above scheme, the number of trapezoidal sleeves is set to two. The two trapezoidal sleeves are symmetrically and evenly distributed on the surface with respect to the top center of the sampling cylinder. The diameter of the two trapezoidal sleeves at the end closer to each other is smaller than the diameter of the end farther away from each other.

[0007] The above technical solution optimizes the uniformity and stability of water flow by setting up two symmetrically distributed trapezoidal sleeves. The double trapezoidal sleeves are symmetrically arranged around the top center of the sampling cylinder, and their tapering structure can balance the water flow force and reduce the disturbance of turbulence to the water sample inside the cylinder.

[0008] As a further improvement to the above solution, the externally threaded tube is located between the internally threaded tube and the inner sleeve.

[0009] The above technical solution clarifies the hierarchical relationship of thread engagement by defining the external threaded tube as located between the internal threaded tube and the inner sleeve. The external threaded tube serves as a fixed component, while the internal threaded tube separates from or locks it by rotation, and the inner sleeve provides an installation base for the limiting block.

[0010] As a further improvement to the above solution, the positioning groove is adapted to the limiting block.

[0011] The above technical solution ensures the reliability of the locked state by limiting the compatibility between the positioning groove and the limiting block. When the limiting block disengages from the groove, it must be rotated to be directly below the positioning groove to fully unlock. This dual positioning mechanism prevents accidental unlocking due to misoperation.

[0012] As a further improvement to the above solution, a take-up reel is fixedly connected to the other end of the conveyor line, a crank is fixedly connected to the left end of the take-up reel, a bearing is rotatably connected to the inner wall of the take-up reel, a fixing post is fixedly connected to the inner wall of the bearing, a threaded rod is fixedly connected to the left end of the fixing post, a connecting rod is threadedly connected to the surface of the threaded rod, and a limit ring is fixedly connected to the surface of the connecting rod.

[0013] Through the above technical solution, by introducing a conveyor line recycling system driven by a take-up reel and a crank handle, remote and controllable recycling of the sampling cylinder is achieved. When the take-up reel rotates, the conveyor line is constrained by a limit ring to avoid entanglement and misalignment.

[0014] As a further improvement to the above scheme, the number of bearings is set to two, and the two bearings are evenly distributed on the surface with symmetry about the center of the top of the fixed column.

[0015] The above technical solution optimizes the rotational stability of the fixed column by using two symmetrically distributed bearings. The dual bearings are arranged symmetrically around the top center of the fixed column, balancing the radial load during the rotation of the winding coil and preventing axial displacement or vibration.

[0016] As a further improvement to the above solution, the take-up coil is concentric with the fixed post, and the conveyor line passes through the limiting ring.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention achieves rapid deployment and sealing of the sampling tube by setting a locking mechanism that links the trapezoidal sleeve with a spring and a limiting block. During operation, the sampling tube is inserted into the water source through the conveyor line. The large end of the trapezoidal sleeve guides the water flow smoothly into the tube. At the same time, the spring pushes the limiting block into the slot, which facilitates the quick separation of the sampling tube from the connecting device after water sampling. This solves the problem that conventional sampling relies on ropes for fixing, which is inconvenient for subsequent separation.

[0019] This invention achieves efficient recovery and precise control of the sampling cylinder by setting up a conveyor line recovery system driven by a take-up reel and a crank, combined with the coordinated guidance of a limit ring and a bearing. During operation, turning the crank drives the take-up reel to rotate, and the conveyor line is constrained by the limit ring to avoid entanglement and deviation. At the same time, the fixed column supported by the bearing reduces rotational friction, allowing the sampling cylinder to smoothly leave the water surface, which facilitates the retrieval work after the sampling cylinder has been collected. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall separation structure of the sampling cylinder of this utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the sampling cylinder of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall connection structure of the connecting rod of this utility model;

[0024] Figure 5 This is a schematic diagram of the overall separate structure of the take-up coil and the fixing post of this utility model.

[0025] In the diagram: 1. Sampling cylinder; 2. Trapezoidal sleeve; 3. Externally threaded tube; 4. Internally threaded tube; 5. Inner sleeve; 6. Spring; 7. Positioning groove; 8. Slot; 9. Limiting block; 10. Fixing ring; 11. Connecting ring; 12. Conveyor line; 13. Take-up coil; 14. Handle; 15. Bearing; 16. Fixing post; 17. Threaded rod; 18. Connecting rod; 19. Limiting ring. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example:

[0028] Please combine Figures 1-5This embodiment of a water sample collection device includes a sampling cylinder 1, a trapezoidal sleeve 2 fixedly connected to the inner wall of the sampling cylinder 1, an externally threaded tube 3 fixedly connected to the top of the sampling cylinder 1, an internally threaded tube 4 threadedly connected to the surface of the externally threaded tube 3, an inner sleeve 5 fixedly connected to the top of the inner wall of the internally threaded tube 4, a spring 6 fixedly connected to the bottom of the inner wall of the inner sleeve 5, a positioning groove 7 opened at the top of the internally threaded tube 4, a slot 8 opened at the top of the inner wall of the internally threaded tube 4, a limiting block 9 engaging inside the slot 8, a fixing ring 10 fixedly connected to the top of the limiting block 9, a connecting ring 11 sleeved on the surface of the fixing ring 10, and a conveyor line 12 fixedly connected to the surface of the connecting ring 11.

[0029] There are two trapezoidal sleeves 2. The two trapezoidal sleeves 2 are symmetrically and evenly distributed on the surface with respect to the top center of the sampling cylinder 1. The diameter of the two trapezoidal sleeves 2 at the end closer to each other is smaller than the diameter at the end farther away from each other.

[0030] The externally threaded pipe 3 is located between the internally threaded pipe 4 and the inner sleeve 5.

[0031] The positioning groove 7 is compatible with the limit block 9.

[0032] The other end of the conveyor line 12 is fixedly connected to a take-up reel 13. The left end of the take-up reel 13 is fixedly connected to a crank handle 14. The inner wall of the take-up reel 13 is rotatably connected to a bearing 15. The inner wall of the bearing 15 is fixedly connected to a fixing post 16. The left end of the fixing post 16 is fixedly connected to a threaded rod 17. The surface of the threaded rod 17 is threadedly connected to a connecting rod 18. The surface of the connecting rod 18 is fixedly connected to a limit ring 19.

[0033] There are two bearings 15, which are evenly distributed on the surface with the top of the fixing column 16 symmetrically centered.

[0034] The take-up coil 13 is concentric with the fixed post 16, and the conveyor line 12 passes through the limiting ring 19.

[0035] The implementation principle of the water sample collection device in this application embodiment is as follows: When collecting water samples, the sampling cylinder 1 is first inserted into the water source to be sampled through the conveyor line 12. The water source enters from the large diameter end of the trapezoidal sleeve 2 to the small diameter end and flows into the interior of the sampling cylinder 1. After the sampling is completed, the fixing ring 10 is pressed, so that the fixing ring 10 presses the limiting block 9. Simultaneously, the limiting block 9 presses the spring 6, so that the limiting block 9 is disengaged from the inside of the slot 8. The limiting block 9 is rotated so that the limiting block 9 is directly below the positioning slot 7. The force of pressing the limiting block 9 is released, so that the limiting block 9 is disengaged from the inside of the inner sleeve 5. The sampling cylinder 1 can then be removed. The internal threaded tube 4 is rotated, and the internal threaded tube 4 rotates on the surface of the external threaded tube 3 and disengages from the surface of the external threaded tube 3. The water sample collection can then be carried out.

[0036] After the sampling tube 1 is placed, when it needs to be retrieved, the staff holds the connecting rod 18 and turns the crank 14. The crank 14 drives the take-up reel 13 to rotate. The rotation of the take-up reel 13 causes the conveyor line 12 fixed to its surface to be taken up by the take-up reel 13, and the sampling tube 1 located in the water source is retrieved at the same time, so that the sampling tube 1 can be retrieved after the sampling tube is placed.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A drop-type water sample collection device, characterized in that: The sample includes a sampling cylinder (1), a trapezoidal sleeve (2) is fixedly connected to the inner wall of the sampling cylinder (1), an external threaded tube (3) is fixedly connected to the top of the sampling cylinder (1), an internal threaded tube (4) is threadedly connected to the surface of the external threaded tube (3), an inner sleeve (5) is fixedly connected to the top of the inner wall of the internal threaded tube (4), a spring (6) is fixedly connected to the bottom of the inner wall of the inner sleeve (5), a positioning groove (7) is provided at the top of the internal threaded tube (4), a slot (8) is provided at the top of the inner wall of the internal threaded tube (4), a limiting block (9) is engaged inside the slot (8), a fixing ring (10) is fixedly connected to the top of the limiting block (9), a connecting ring (11) is sleeved on the surface of the fixing ring (10), and a conveyor line (12) is fixedly connected to the surface of the connecting ring (11).

2. The water sample collection device according to claim 1, characterized in that: The trapezoidal sleeve (2) is provided in two quantities. The two trapezoidal sleeves (2) are evenly distributed on the surface with the top center of the sampling cylinder (1) symmetrically. The diameter of the two trapezoidal sleeves (2) at the end closer to each other is smaller than the diameter at the end farther away from each other.

3. The water sample collection device according to claim 1, characterized in that: The external threaded pipe (3) is located between the internal threaded pipe (4) and the inner sleeve (5).

4. The drop-out water sample collection device according to claim 1, characterized in that: The positioning groove (7) is adapted to the limiting block (9).

5. The drop-out water sample collection device according to claim 1, characterized in that: The other end of the conveyor line (12) is fixedly connected to a take-up reel (13). The left end of the take-up reel (13) is fixedly connected to a crank handle (14). The inner wall of the take-up reel (13) is rotatably connected to a bearing (15). The inner wall of the bearing (15) is fixedly connected to a fixing post (16). The left end of the fixing post (16) is fixedly connected to a threaded rod (17). The surface of the threaded rod (17) is threadedly connected to a connecting rod (18). The surface of the connecting rod (18) is fixedly connected to a limit ring (19).

6. The water sample collection device according to claim 5, characterized in that: The number of bearings (15) is set to two, and the two bearings (15) are evenly distributed on the surface with the center of the fixed column (16) symmetrically oriented.

7. The drop-out water sample collection device according to claim 5, characterized in that: The take-up coil (13) is concentric with the fixed post (16), and the conveyor line (12) passes through the limiting ring (19).

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