Portable larva quantitative sampling device

Abstract

The utility model relates to the technical field of sampling devices, and discloses a portable larva quantitative sampling device which comprises a sleeve, a mounting block is fixedly connected to the outside of the right end of the sleeve, two limiting grooves are formed in the mounting block, springs are fixedly connected to the interiors of the limiting grooves, a sliding block is fixedly connected to the other end of each spring, and the sliding block is fixedly connected to the right end of the sleeve. A pull rope is fixedly connected to one side of the sliding block, a clamping block is fixedly connected to the other side of the pull rope, a filter screen is installed in the end, close to the installation block, of the sleeve, and clamping grooves are formed in the two sides of the filter screen. According to the utility model, the filter screen can prevent impurities and part of larvae from entering the sleeve when the larvae in water are extracted, so that the pollution to the inner wall, the influence on the next sampling and the inaccuracy of the sampling result can be avoided, meanwhile, the filter screen can be quickly disassembled and assembled through the clamping component, the replacement is convenient, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a portable larva quantitative sampling device. Background Art

[0002] A sampling device is a device used to extract representative samples from a specific medium. It plays an important role in various applications, such as environmental monitoring, industrial process control, and scientific research. Sampling devices are usually designed to obtain samples from liquids, gases, or solids, ensuring the representativeness and accuracy of the samples, thereby helping users obtain high-quality data to support further analysis and decision-making. When sampling aquatic larvae, a larva sampling device is generally used.

[0003] Traditional larva sampling devices are generally in the shape of a syringe. By placing them in water and extracting the aquatic larvae, the sampling operation can be achieved. However, when extracting, the impurities attached to the water will enter the inside of the tube body and are likely to adhere to the inner wall of the tube when discharged, thus causing pollution to the tube body and easily affecting the next sampling, resulting in deviation in the accuracy of the sampling results. To solve the above problems, the technical personnel in this field have proposed a portable larva quantitative sampling device to solve the above problems. Summary of the Utility Model

[0004] To make up for the above deficiencies, the utility model provides a portable larva quantitative sampling device, aiming to improve the problem that when the existing larva sampling device is in use, the impurities attached to the water will enter the inside of the tube body and easily affect the next sampling.

[0005] To achieve the above object, the utility model provides the following technical solution: A portable larva quantitative sampling device, including a sleeve. The outer part of the right end of the sleeve is fixedly connected with a mounting block. Two limiting grooves are opened inside the mounting block. A spring is fixedly connected inside the limiting groove. The other end of the spring is fixedly connected with a slider. One side of the slider is fixedly connected with a pull rope. The other side of the pull rope is fixedly connected with a clamping block. A filter screen is installed inside one end of the sleeve close to the mounting block. Card slots are opened on both sides of the filter screen. A sampling assembly is arranged at the right end of the sleeve, and the sampling assembly is used for the larva sampling operation.

[0006] Further, the sampling assembly includes a sampling tube. The sampling tube is threadedly connected to the right end of the sleeve. A connecting piece is threadedly connected to the right end of the sampling tube. The right end of the connecting piece is fixedly connected with a corrugated pipe. The right end of the corrugated pipe is fixedly connected with a sampling head.

[0007] Further, a piston is slidably connected inside the sleeve. A pull rod is fixedly connected to the left side of the piston. A sealing rubber ring is arranged outside the piston.

[0008] Further, a turning handle is rotatably connected to the inner part of the top end of the mounting block, and the bottom end of the turning handle is fixedly connected to the adjacent ends of two pulling ropes.

[0009] Further, the sliding block is slidably connected to the inside of the limiting groove, and the clamping block is engaged with the inside of the adjacent clamping groove on one side.

[0010] Further, a limiting plate is fixedly connected to the outer part of the left end of the sleeve.

[0011] Further, sealing caps are arranged at both ends of the sampling tube, and the sealing caps are in threaded connection with the sampling tube.

[0012] Further, the shape of the sampling head is funnel-shaped, and anti-slip lines are arranged on the outer part of the connecting piece.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, through the filter screen, when extracting larvae in water, impurities and some larvae can be prevented from entering the sleeve, so as to avoid contaminating the inner wall, affecting the next sampling, and avoiding the inaccuracy of the sampling result. By rotating the turning handle to drive the two pulling ropes to wind up, and then driving the sliding block to slide inside the limiting groove, the spring can be pressed to contract, and at the same time, the clamping block is driven to disengage from the clamping groove, so as to realize the disassembly operation of the filter screen, and the filter screen can be quickly disassembled and assembled, which is convenient for replacement and prolongs the service life of the device.

[0015] 2. In the utility model, through the threaded connection between the sleeve and the sampling tube, and the threaded connection between the sampling tube and the connecting piece, the sampling device can be quickly assembled and separated, which improves the portability of the device. Through the scale arranged on the sampling tube, the sampling amount can be judged, which improves the flexibility of use. And through the sealing caps, both ends of the sampling tube can be sealed, so that it is convenient to carry after sampling. By stretching the corrugated pipe, it can be extended to sample larvae in water at different depths. Description of the Drawings

[0016] Figure 1 is a perspective view of the portable larva quantitative sampling device proposed by the utility model;

[0017] Figure 2 is a schematic structural diagram of the pull rod of the portable larva quantitative sampling device proposed by the utility model;

[0018] Figure 3 is a sectional view of the mounting block of the portable larva quantitative sampling device proposed by the utility model;

[0019] Figure 4Schematic diagram of the sampling tube structure of the portable larva quantitative sampling device proposed by the present utility model;

[0020] Figure 5 is Figure 3 the enlarged view of part A in

[0021] Legend:

[0022] 1. Sleeve; 2. Mounting block; 3. Sampling tube; 4. Filter net; 5. Connector; 6. Rotating handle; 7. Limiting groove; 8. Spring; 9. Pulling rope; 10. Slide block; 11. Clamping block; 12. Card slot; 13. Bellows; 14. Sampling head; 15. Piston; 16. Pull rod; 17. Limiting plate; 18. Sealing cover. Specific implementation manner

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Referring to Figure 2 、 Figure 3 and Figure 5 , an embodiment provided by the present utility model: a portable larva quantitative sampling device, including a sleeve 1, the outer part of the right end of the sleeve 1 is fixedly connected with a mounting block 2, two limiting grooves 7 are opened inside the mounting block 2, a spring 8 is fixedly connected inside the limiting groove 7, the other end of the spring 8 is fixedly connected with a slide block 10, one side of the slide block 10 is fixedly connected with a pulling rope 9, the other side of the pulling rope 9 is fixedly connected with a clamping block 11, a filter net 4 is installed inside one end of the sleeve 1 close to the mounting block 2, card slots 12 are opened on both sides of the filter net 4, the top end inside the mounting block 2 is rotatably connected with a rotating handle 6, the bottom end of the rotating handle 6 is fixedly connected with the adjacent ends of the two pulling ropes 9, the slide block 10 is slidably connected inside the limiting groove 7, and the clamping block 11 is engaged with the inside of the adjacent card slot 12.

[0025] Specifically, the mounting block 2 is fixed through the sleeve 1. Furthermore, the disassembly and assembly of the filter net 4 can be realized through the clamping component arranged inside the mounting block 2. By rotating the turning handle 6, the two pulling ropes 9 are wound up, thereby driving the slider 10 to slide inside the limiting groove 7. The movement of the slider 10 can be restricted through the limiting groove 7 to ensure the stable operation of the structure. Furthermore, the spring 8 can be pressured to contract, and at the same time, the clamping block 11 is driven to disengage from the clamping groove 12, thereby realizing the disassembly operation of the filter net 4. The filter net 4 can be quickly disassembled and assembled, which is convenient for replacement, prolongs the service life of the device. At the same time, through the filter net 4, when extracting larvae in water, impurities and some larvae can be prevented from entering the sleeve 1, thereby causing pollution to the inner wall and affecting the next sampling, and avoiding the inaccuracy of the sampling result.

[0026] Refer to Figure 1 and Figure 4 , a sampling component is arranged at the right end of the sleeve 1. The sampling component is used for the larva sampling operation. The sampling component includes a sampling tube 3. The sampling tube 3 is threadedly connected to the right end of the sleeve 1. A connecting piece 5 is threadedly connected to the right end of the sampling tube 3. A corrugated pipe 13 is fixedly connected to the right end of the connecting piece 5. A sampling head 14 is fixedly connected to the right end of the corrugated pipe 13. Sealing caps 18 are arranged at both ends of the sampling tube 3, and the sealing caps 18 are threadedly connected to the sampling tube 3. The shape of the sampling head 14 is funnel-shaped, and anti-slip patterns are arranged on the outer part of the connecting piece 5.

[0027] Specifically, through the threaded connection between the sleeve 1 and the sampling tube 3 and the threaded connection between the sampling tube 3 and the connecting piece 5, the sampling device can be quickly assembled and separated, improving the portability of the device. Through the scale arranged on the sampling tube 3, the sampling volume can be judged, improving the flexibility of use. And through the sealing caps 18, both ends of the sampling tube 3 can be sealed, so that it is convenient to carry after sampling. By stretching the corrugated pipe 13, it can be extended to sample larvae in water at different depths. The funnel-shaped sampling head 14 makes the sampling fast and convenient.

[0028] Refer to Figure 2 , a piston 15 is slidably connected inside the sleeve 1. A pull rod 16 is fixedly connected to the left side of the piston 15. A sealing rubber ring is arranged outside the piston 15. A limiting plate 17 is fixedly connected to the outer part of the left end of the sleeve 1.

[0029] Specifically, when the piston 15 is moved inside the sleeve 1 by pulling the pull rod 16, water can enter the sampling device, thereby completing the sampling operation. And a rubber ring is arranged outside the piston 15 to improve the sealing performance. The limiting plate 17 can facilitate the movement of the pull rod 16, making the device easier to use.

[0030] Working principle: When using this device for sampling, first immerse the sampling head 14 in water. Then, the piston 15 can be driven to slide inside the sleeve 1 by pulling the pull rod 16. As a result, the larvae in the water are sucked into the corrugated pipe 13 and then enter the inside of the sampling pipe 3. The amount of sampling can be judged according to the scale on the sampling pipe 3. When the sampling requirement is met, place the sampling device vertically with the pull rod 16 at the bottom. Then, unscrew the connecting piece 5 and seal one end of the sampling pipe 3 through the sealing cover 18. Next, turn over the device, separate the sleeve 1 from the sampling pipe 3, and seal the other end through the spring 8 to complete the sampling operation. A filter net 4 is installed inside the mounting block 2, which can prevent impurities and some larvae from entering the sleeve 1 when sucking the larvae in the water, thus avoiding polluting the inner wall and affecting the next sampling. By rotating the turning handle 6 to drive the two pull ropes 9 to wind up, the slider 10 is driven to slide inside the limiting groove 7, which can exert pressure on the spring 8 to make it contract, and at the same time drive the clamping block 11 to disengage from the clamping groove 12, thereby realizing the disassembly operation of the filter net 4, enabling the filter net 4 to be quickly disassembled and assembled for easy replacement, and extending the service life of the device.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Portable larval quantitative sampling device, including a sleeve (1), characterized in that: An installation block (2) is fixedly connected to the outside of the right end of the sleeve (1). Two limiting grooves (7) are formed inside the installation block (2). A spring (8) is fixedly connected inside the limiting groove (7). The other end of the spring (8) is fixedly connected to a slider (10). A pulling rope (9) is fixedly connected to one side of the slider (10). The other side of the pulling rope (9) is fixedly connected to a clamping block (11). A filter screen (4) is installed inside one end of the sleeve (1) close to the installation block (2). Card slots (12) are formed on both sides of the filter screen (4). A sampling assembly is arranged at the right end of the sleeve (1), and the sampling assembly is used for larva sampling operation.

2. The portable larva quantitative sampling device according to claim 1, characterized in that: The sampling assembly includes a sampling tube (3). The sampling tube (3) is threadedly connected to the right end of the sleeve (1). A connecting piece (5) is threadedly connected to the right end of the sampling tube (3). A corrugated pipe (13) is fixedly connected to the right end of the connecting piece (5). A sampling head (14) is fixedly connected to the right end of the corrugated pipe (13).

3. The portable larva quantitative sampling device according to claim 1, characterized in that: A piston (15) is slidably connected inside the sleeve (1). A pull rod (16) is fixedly connected to the left side of the piston (15). A sealing rubber ring is arranged outside the piston (15).

4. The portable larva quantitative sampling device according to claim 1, characterized in that: A rotating handle (6) is rotatably connected inside the top end of the installation block (2). The bottom end of the rotating handle (6) is fixedly connected to the adjacent ends of the two pulling ropes (9).

5. The portable larva quantitative sampling device according to claim 1, wherein: The slider (10) is slidably connected inside the limiting groove (7). The clamping block (11) is engaged with the inside of the adjacent card slot (12).

6. The portable larva quantitative sampling device according to claim 1, characterized in that: A limiting plate (17) is fixedly connected to the outside of the left end of the sleeve (1).

7. The portable larva quantitative sampling device according to claim 2, wherein: Sealing caps (18) are arranged at both ends of the sampling tube (3), and the sealing caps (18) are threadedly connected to the sampling tube (3).

8. The portable larva quantitative sampling device according to claim 2, characterized in that: The shape of the sampling head (14) is funnel-shaped. Anti-slip patterns are arranged on the outside of the connecting piece (5).

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