A plankton sampler

Abstract

The utility model relates to the field of sampling and collecting plankton, and discloses a plankton sampler, including a main rod and a sampling net, wherein the top inner wall of the main rod is slidably connected to an auxiliary rod, and the middle parts of the bottom ends of the main rod and the auxiliary rod are provided with a slide groove, and the inside of the slide groove is slidably connected to a pulley, and the bottom end of the pulley is fixedly connected to a rope net, and the bottom end of the rope net is movably connected to four ring blocks, and the rear side of the auxiliary rod is provided with a placement groove, and the inside of the placement groove is fixedly connected to a rack block, and the bottom left side of the main rod is fixedly connected to a motor, and the driving end of the motor is fixedly connected to a gear, and the middle part of the left end of the auxiliary rod is provided with a through hole, and a limit position component is arranged inside the through hole. In the utility model, the hand-held rod of the planktonic sampler is telescopically adjustable in length, and the hand-held rod can be easily extended or shortened to ensure that the sampler can reach the target depth and the sampling net can be easily removed for cleaning or replacement and maintenance, so that the sampling net can better filter impurities in the water area.

Description

Technical Field

[0001] The utility model relates to the field of sampling and collecting plankton, in particular to a plankton sampler. Background Art

[0002] Plankton is an organism that floats on the water surface and moves with the current. The study of plankton can help maintain the balance of the aquatic ecosystem. Plankton sampling is a key process and requires the use of special equipment. Sampling can be done by the river or while boating.

[0003] After searching, the Chinese patent with announcement number: CN217180016U discloses a plankton sampling device, including a sampling rod, a steel ring and a net bag, a slide groove is provided at the bottom of the sampling rod, a pulley with a bracket matching it is provided inside the slide groove, the steel ring is fixedly connected to the pulley bracket, a net bag is provided at the circumference of the steel ring, a positioning pin that can pass through the slide groove is provided at one end of the sampling rod near the pulley, a pressure rod is provided at the top of the sampling rod, one end of the pressure rod is fixedly connected to the positioning pin, a support rod is provided in the middle of the top of the sampling rod, one end of the support rod is fixedly connected to the sampling rod, and the other end is hinged to the middle of the pressure rod, the height of the support rod is greater than the height of the positioning pin, a connecting plate is fixedly connected to the bottom of the net bag, and a collection tube is rotatably connected to the bottom of the connecting plate. The utility model can control the movement of the collection tube, reduce people's labor intensity, and the detachable connection of the collection tube can quickly collect plankton and improve work efficiency.

[0004] The working principle of the above patent mentions that "the pulley 2 slides in the slide groove 7 to the end close to the positioning pin 6, and is fixed by the positioning pin 6. The sampling rod 1 is operated horizontally to drive the collection tube 11 to sample plankton. When the sampling is completed, the sampling rod 1 is in an upward tilted state. At this time, an external force is applied to the pressure rod 3. The pressure rod 3 moves the positioning pin 6 upward under the action of the support rod 4. The pulley 2 uses its own weight to slide freely downward on the inside of the slide groove 7 to the hand-held position, which is convenient for collecting plankton in the collection tube 11. When the external force of the pressure rod 3 is eliminated, the positioning pin 6 can be automatically moved downward by relying on the action of the spring 5." However, in different waters or different depths, the user needs to adjust the depth of the sampler to obtain more comprehensive sample data, but the hand-held rod in the above sampler structure is of fixed length, which limits the sampler's ability to reach different depths of water and cannot adapt to different sampling needs. In view of the above problems, a plankton sampler is proposed to solve the above problems. Utility Model Content

[0005] In order to remedy the above deficiencies, the utility model provides a plankton sampler, which aims to improve the problem in the prior art that the fixed length of the handheld rod causes the sampler to be unable to meet the needs of sampling at different depths of water.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A plankton sampler comprises a main rod and a sampling net, the top inner wall of the main rod is slidably connected with an auxiliary rod, the middle parts of the bottom ends of the main rod and the auxiliary rod are provided with a slide groove, the inside of the slide groove is slidably connected with a pulley, the bottom end of the pulley is fixedly connected with a rope net, the bottom end of the rope net is movably connected with four ring blocks, the rear side of the auxiliary rod is provided with a placement groove, the inside of the placement groove is fixedly connected with a rack block, the left side of the bottom end of the main rod is fixedly connected with a motor, the driving end of the motor is fixedly connected with a gear, the middle part of the left end of the auxiliary rod is provided with a through hole, a limiting assembly is arranged inside the through hole, the middle part of the top end of the auxiliary rod and the left side of the top end of the main rod are fixedly connected with a limiting ring, and the left top end of the pulling block is fixedly connected with a traction rope;

[0008] As a further description of the above technical solution:

[0009] The limiting assembly includes a card block, a limiting column, a groove, a pulling block, an oblique groove, a connecting block and a spring 1, the through hole is slidably connected to the inside of the card block, the middle part of the top of the card block is fixedly connected to the limiting column, a groove is provided on the left side of the top of the auxiliary rod, a pulling block is slidably connected to the inside of the groove, oblique grooves are provided on both the front and rear sides of the pulling block, a connecting block is fixedly connected to the left side of the top of the auxiliary rod, a spring 1 is fixedly connected to the right side of the connecting block, and the limiting ring is sleeved on the outside of the traction rope;

[0010] As a further description of the above technical solution:

[0011] The bottom end of the ring block is fixedly connected to a support block, a notch is provided at the bottom end of the support block, the support block is rotatably connected to two rotating plates on a side away from the sampling net, a through block is fixedly connected to the adjacent sides of the two rotating plates, a positioning column is fixedly connected to the middle part of the through block, a stop block is rotatably connected to the outside of the positioning column, a spring 2 is fixedly connected to the top end of the stop block, and a clamp is fixedly connected to the side of the bottom end of the support block away from the rotating plate;

[0012] As a further description of the above technical solution:

[0013] Four sampling bottles are provided on the outside of the top of the sampling net, the outside of the clamp is engaged with the inner wall of the sampling bottle, the outside of the through block is engaged with the inner wall of the sampling bottle, and the bottom of the sampling net is detachably connected with a sampling bottle;

[0014] As a further description of the above technical solution:

[0015] The outer portion of the gear is rotatably connected to the left end of the inner wall of the main rod, and the outer teeth of the gear are meshed with the rear teeth of the rack block;

[0016] As a further description of the above technical solution:

[0017] The outer portion of the limit column is slidably connected to the inner wall of the inclined slot, and the left end of the spring 1 is fixedly connected to the middle portion of the right end of the inclined slot;

[0018] As a further description of the above technical solution:

[0019] The outer portion of the stop block is slidably connected to the inner wall of the through block, and the top end of the stop block is engaged with the inner wall of the notch;

[0020] As a further description of the above technical solution:

[0021] One end of the second spring away from the stop block is fixedly connected to a side of the inner wall of the through block close to the clamping piece, and a side of the clamping piece close to the positioning column is engaged with the outside of the through block.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, by starting the motor to drive the gear to rotate and mesh with the teeth of the rack block fixed in the auxiliary rod, the hand-held rod of the floating sampler can be retracted and adjusted in length, and the hand-held rod can be easily extended or shortened to ensure that the sampler can reach the target depth, thereby obtaining more comprehensive and accurate sample data.

[0024] 2. In the utility model, the stop block is sequentially turned to rotate around the positioning column, so that the top of the stop block is disengaged from the engagement with the rotating plate, allowing the rotating plate to rotate, and the rotating plate is disengaged from the engagement with the clamp after rotation, opening the openings of the clamp and the rotating plate, allowing the user to easily remove the sampling net for cleaning or replacement and maintenance, so that the sampling net can better filter impurities in the water area. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional schematic diagram of a plankton sampler proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a plankton sampler gear proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a plankton sampler chute proposed by the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of a plankton sampler rope net proposed by the utility model;

[0029] Figure 5 The utility model is a schematic diagram of the structure of a sampling bottle of a plankton sampler.

[0030] Legend:

[0031] 1. Main rod; 2. Auxiliary rod; 3. Slide groove; 4. Pulley; 5. Rope net; 6. Ring block; 7. Sampling net; 8. Placement groove; 9. Rack block; 10. Motor; 11. Gear; 12. Through hole; 13. Block; 14. Limit column; 15. Groove; 16. Pull block; 17. Inclined groove; 18. Connecting block; 19. Spring 1; 20. Limit ring; 21. Pull rope; 22. Support block; 23. Notch; 24. Turntable; 25. Through block; 26. Positioning column; 27. Abutment block; 28. Spring 2; 29. ​​Card; 30. Sampling bottle. DETAILED DESCRIPTION

[0032] 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.

[0033] Reference Figure 1-Figure 3 The utility model provides an embodiment: a plankton sampler, including a main rod 1 and a sampling net 7, the top inner wall of the main rod 1 is slidably connected with an auxiliary rod 2, the auxiliary rod 2 is tightly fitted with the inner wall of the main rod 1 for telescopic movement, and a slide groove 3 is provided in the middle of the bottom end of the main rod 1 and the auxiliary rod 2, and a pulley 4 is slidably connected inside the slide groove 3. The slide groove 3 is set to allow the pulley 4 to slide, so that the user can indirectly drive the sampling net 7 to move back and forth quickly left and right through the pulley 4, thereby increasing the sampling speed.

[0034] The bottom end of the pulley 4 is fixedly connected with a rope net 5, and the bottom end of the rope net 5 is movably connected with four ring blocks 6. The rope net 5 has a thick rope at the top and four scattered thin ropes connecting the ring blocks 6 at the bottom. A placement groove 8 is opened on the rear side of the auxiliary rod 2, and a rack block 9 is fixedly connected inside the placement groove 8 to realize that the rack block 9 is embedded in the inside of the auxiliary rod 2. A motor 10 is fixedly connected to the left side of the bottom end of the main rod 1, and a gear 11 is fixedly connected to the driving end of the motor 10. The external rotation of the gear 11 is connected to the left end of the inner wall of the main rod 1, and the external teeth of the gear 11 are meshed with the rear teeth of the rack block 9. When the motor 10 is started, it drives the gear 11 to rotate in contact with the inner wall of the main rod 1 and mesh with the teeth of the rack block 9, thereby pushing the rack block 9 to telescope left and right.

[0035] refer to Figure 1 , Figure 3A through hole 12 is provided in the middle of the left end of the auxiliary rod 2, and a limiting assembly is arranged inside the through hole 12. The limiting assembly includes a card block 13, a limiting column 14, a groove 15, a pulling block 16, an inclined groove 17, a connecting block 18 and a spring 19. The card block 13 is slidably connected inside the through hole 12, and the limiting column 14 is fixedly connected to the middle of the top of the card block 13. A groove 15 is provided on the left side of the top of the auxiliary rod 2, and a pulling block 16 is slidably connected inside the groove 15. The front and rear sides of the pulling block 16 are provided with inclined grooves 17, and the inclined groove 17 is sleeved on the outside of the card block 13.

[0036] The outside of the limiting column 14 is slidably connected to the inner wall of the inclined groove 17, the left side of the top of the auxiliary rod 2 is fixedly connected with a connecting block 18, the connecting block 18 and the groove 15 are on the same horizontal line, the right side of the connecting block 18 is fixedly connected with a spring 19, the left end of the spring 19 is fixedly connected to the middle of the right end of the inclined groove 17, the middle of the top of the auxiliary rod 2 and the left side of the top of the main rod 1 are fixedly connected with a limiting ring 20, the left top of the pulling block 16 is fixedly connected with a traction rope 21, and the limiting ring 20 is sleeved on the outside of the traction rope 21. Since the traction rope 21 is long and connected to the left end of the inclined groove 17, when the sliding When the wheel 4 drives the sampling net 7 to slide on the left end of the auxiliary rod 2, the pull rope 21 is first pulled to drive the pulling block 16 to slide to the left on the inner wall of the groove 15 to squeeze the spring 19, so that the limiting column 14 defined in the inclined groove 17 of the pulling block 16 slides on the inclined surface of the inclined groove 17 to drive the card block 13 to rise, thereby opening the flow intersection of the slide groove 3 in the auxiliary rod 2, and allowing the pulley 4 to slide to the rightmost side of the auxiliary rod 2. At this time, the pull rope 21 is released to allow the elastic force of the spring 19 to drive the pulling block 16 to reset, and the reset pulling block 16 drives the card block 13 to reset through the inclined groove 17 to limit the position of the pulley 4.

[0037] refer to Figure 2 , Figure 4 and Figure 5 The bottom end of the ring block 6 is fixedly connected with a support block 22, and a notch 23 is provided at the bottom end of the support block 22. The side of the support block 22 away from the sampling net 7 is rotatably connected with two rotating plates 24. The notch 23 provided in the support block 22 is for assisting the rotating plates 24 to rotate and fix the angle. A through block 25 is fixedly connected to the adjacent side of the two rotating plates 24. The through block 25 is connected to the rotating plates 24 and rotates with the top of the rotating plates 24 as the center point. A positioning column 26 is fixedly connected to the middle part of the inner part of the through block 25, and a stop block 27 is rotatably connected to the outer part of the positioning column 26, and the stop block 27 rotates with the positioning column 26 as the center point.

[0038] The outside of the stop block 27 is slidably connected to the inner wall of the through block 25, and the top of the stop block 27 is engaged with the inner wall of the notch 23. The end of the spring 28 away from the stop block 27 is fixedly connected to the side of the inner wall of the through block 25 close to the clamp 29. The top of the stop block 27 is fixedly connected with the spring 28, and the side of the bottom end of the support block 22 away from the rotating plate 24 is fixedly connected with the clamp 29. The side of the clamp 29 close to the positioning column 26 is engaged with the outside of the through block 25. The spring 28 is supported by the inner wall of the through block 25 to support the bottom end of the stop block 27 to rotate outward, and the other end of the stop block 27 is engaged with the notch 23 under the action of the resisting force of the spring 28, thereby fixing the position of the rotating plate 24 after rotation, so that the rotating plate 24 drives the through block 25 to tightly engage with the clamp 29 to fix the sampling net 7.

[0039] Four sampling bottles 30 are provided on the outside of the top of the sampling net 7, the outside of the clamp 29 is engaged with the inner wall of the sampling bottle 30, and the outside of the through block 25 is engaged with the inner wall of the sampling bottle 30. After the through block 25 and the clamp 29 are fixedly engaged, they are nested together with the sampling bottles 30 of the sampling net 7, thereby fixing the sampling net 7. The bottom end of the sampling net 7 is detachably connected with the sampling bottle 30, and the sampling bottle 30 is threadedly connected to the bottom end of the sampling net 7, and the sampling bottle 30 can be removed by rotation for testing.

[0040] Working principle: When the length of the main rod 1 needs to be extended, the motor 10 can be started to drive the gear 11 to rotate and mesh with the teeth of the rack block 9 embedded in the auxiliary rod 2, so that the rack block 9 is pushed to extend and retract out of the main rod 1 through the teeth of the rack block 9, and the fixed auxiliary rod 2 is synchronously driven to extend and retract. When the auxiliary rod 2 is extended and retracted to a suitable position, the motor 10 is turned off to keep the gear 11 stationary. At this time, the outer teeth of the gear 11 are meshed with the teeth of the rack block 9 to ensure that the auxiliary rod 2 will not retract. Then, because the slide groove 3 opened in the middle of the main rod 1 and the auxiliary rod 2 is the same size, the pulley 4 defined in the slide groove 3 will drive the indirectly fixed sampling net 7 to slide in the middle of the main rod 1 and the auxiliary rod 2 by gravity, which is convenient for users to operate. Check and sample, and because the pulling rope 21 is long and connected to the left end of the inclined groove 17, when the pulley 4 drives the sampling net 7 to slide on the left end of the auxiliary rod 2, the pulling rope 21 is first pulled to drive the pulling block 16 to slide to the left on the inner wall of the groove 15 to squeeze the spring 19, so that the limiting column 14 defined in the inclined groove 17 of the pulling block 16 slides on the inclined surface of the inclined groove 17 to drive the card block 13 to rise, thereby opening the flow intersection of the slide groove 3 in the auxiliary rod 2, and allowing the pulley 4 to slide to the rightmost side of the auxiliary rod 2. At this time, the pulling rope 21 is released, and the elastic force of the spring 19 drives the pulling block 16 to reset, and the reset pulling block 16 drives the card block 13 to reset through the inclined groove 17 to limit the position of the pulley 4.

[0041] When the user needs to disassemble, clean and repair the sampling net 7, the user can successively pry the block 27 at the bottom of the ring block 6 and rotate it around the positioning column 26 and squeeze the spring 28, so that the top of the block 27 is no longer engaged with the notch 23 of the support block 22, and the rotating plate 24 drives the through block 25 to rotate and open the opening between the clamp 29 and the through block 25. Finally, the user can detach the sampling bottle 30 engaged with the clamp 29 and the outside of the through block 25, so that the sampling net 7 can be quickly disassembled, which is convenient for users to clean and repair, and increases the function of the sampling net 7 to filter impurities in the water area, thereby increasing the accuracy of sample analysis.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plankton sampler, comprising a main rod (1) and a sampling net (7), characterized in that: The inner wall of the top end of the main rod (1) is slidably connected to an auxiliary rod (2); a sliding groove (3) is provided in the middle of the bottom end of each of the main rod (1) and the auxiliary rod (2); a pulley (4) is slidably connected inside the sliding groove (3); a rope net (5) is fixedly connected to the bottom end of the pulley (4); four ring blocks (6) are movably connected to the bottom end of the rope net (5); a placement groove (8) is provided on the rear side of the auxiliary rod (2); a rack block (9) is fixedly connected inside the placement groove (8); a motor (10) is fixedly connected to the left side of the bottom end of the main rod (1); a gear (11) is fixedly connected to the driving end of the motor (10); a through hole (12) is provided in the middle of the left end of the auxiliary rod (2); a limit assembly is arranged inside the through hole (12); a limit ring (20) is fixedly connected to the middle of the top end of the auxiliary rod (2) and the left side of the top end of the main rod (1).

2. A plankton sampler according to claim 1, characterized in that: The limiting assembly comprises a clamping block (13), a limiting column (14), a groove (15), a pulling block (16), an inclined groove (17), a connecting block (18) and a spring (19); the inside of the through hole (12) is slidably connected with the clamping block (13); the middle part of the top end of the clamping block (13) is fixedly connected with the limiting column (14); the top left side of the auxiliary rod (2) is provided with a groove (15); the inside of the groove (15) is slidably connected with the pulling block (16); the front and rear sides of the pulling block (16) are provided with inclined grooves (17); the top left side of the auxiliary rod (2) is fixedly connected with the connecting block (18); the right side of the connecting block (18) is fixedly connected with the spring (19); the top left side of the pulling block (16) is fixedly connected with a traction rope (21); the limiting ring (20) is sleeved on the outside of the traction rope (21).

3. A plankton sampler according to claim 1, characterized in that: The bottom end of the ring block (6) is fixedly connected to a support block (22), a notch (23) is provided at the bottom end of the support block (22), a side of the support block (22) away from the sampling net (7) is rotatably connected to two rotating plates (24), a through block (25) is fixedly connected to the adjacent sides of the two rotating plates (24), a positioning column (26) is fixedly connected to the middle part of the inner part of the through block (25), the outer part of the positioning column (26) is rotatably connected to a stop block (27), a spring 2 (28) is fixedly connected to the top end of the stop block (27), and a clamp (29) is fixedly connected to the side of the bottom end of the support block (22) away from the rotating plate (24).

4. A plankton sampler according to claim 3, characterized in that: Four sampling bottles (30) are provided on the outside of the top of the sampling net (7), the outside of the clamp (29) is engaged with the inner wall of the sampling bottle (30), the outside of the through block (25) is engaged with the inner wall of the sampling bottle (30), and the bottom of the sampling net (7) is detachably connected with the sampling bottle (30).

5. A plankton sampler according to claim 1, characterized in that: The outer portion of the gear (11) is rotationally connected to the left end of the inner wall of the main rod (1), and the outer teeth of the gear (11) are meshingly connected with the rear teeth of the rack block (9).

6. A plankton sampler according to claim 2, characterized in that: The outside of the limiting column (14) is slidably connected to the inner wall of the inclined slot (17), and the left end of the spring 1 (19) is fixedly connected to the middle of the right end of the inclined slot (17).

7. A plankton sampler according to claim 3, characterized in that: The outside of the stop block (27) is slidably connected to the inner wall of the through block (25), and the top end of the stop block (27) is engaged with the inner wall of the notch (23).

8. A plankton sampler according to claim 3, characterized in that: One end of the second spring (28) away from the stop block (27) is fixedly connected to a side of the inner wall of the through block (25) close to the clamp (29), and a side of the clamp (29) close to the positioning column (26) is engaged with the outside of the through block (25).

Images