A bottom sampling device for aquatic nursery pond

Abstract

The present invention relates to the technical field of aquaculture and aquatic seedling raising, and in particular, to a bottom sampling device for an aquatic seedling raising pond. The device comprises a gripping rod, a sampling assembly is arranged at the lower side of the gripping rod, an auxiliary stabilizing assembly is arranged on the side wall of the sampling assembly, and a driving assembly is arranged on the side wall of the gripping rod. When sampling at different depths, a worker uses the gripping rod to move downward to push the sampling assembly downward to insert into the bottom of the pond. The sampling assembly is used to collect samples, and then the worker pulls down the driving assembly, and the driving assembly moves downward to push the sampling assembly to close, so that the sample liquid is sealed inside the sampling assembly, thereby not only greatly shortening the working hours of the worker, but also ensuring that the water quality details at different depths of the pond bottom can be captured, so that a more detailed understanding of the water quality status can be obtained, and the subtle differences in water quality at different depths can be observed.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture and aquatic seedling cultivation, in particular to a bottom layer sampling device of an aquatic seedling cultivation pond. Background Art

[0002] Artificial breeding of aquatic animals such as sea cucumbers and shellfishes all go through the important process of the floating period. The length of the floating period is determined by different species. For example, the floating period of sea cucumbers is generally 8 to 10 days, and the floating period of scallops is about 20 days. During the floating period of different types of aquatic organisms, in addition to sampling the planktonic larvae in the nursery pond water every day and observing their feeding, digestion and development under a microscope, it is also particularly important to sample and observe the bottom of the pond, because unhealthy or dead planktonic larvae will sink. Observing the number of stunted or diseased larvae at the bottom of the pond is very meaningful for evaluating the health status of planktonic larvae. In the traditional bottom sampling process, sampling can usually only be performed at a specific depth of the bottom of the pond. If sampling is required at different depths of the bottom of the pond, multiple reciprocating operations are required, which not only increases the workload but also prolongs the sampling time. In addition, for sampling at the same depth but in different waters, workers are also required to repeatedly insert the equipment into the bottom of the pool. This operation is time-consuming and laborious, significantly reducing the overall work efficiency of sampling. In view of this, we propose a bottom sampling device for aquatic nursery ponds. Summary of the invention

[0003] The object of the present invention is to provide a bottom sampling device for an aquatic nursery pond to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides a bottom sampling device for an aquatic nursery pond, comprising a gripping rod, a sampling assembly is provided on the lower side of the gripping rod, an auxiliary stabilizing assembly is provided on the side wall of the sampling assembly, and a driving assembly is provided on the side wall of the gripping rod, wherein:

[0005] When sampling at different depths, the staff uses the gripping rod to move downward to push the sampling assembly downward to insert into the pool bottom, and then the staff pulls down the driving assembly, which moves downward to push the sampling assembly to close, so that the sample liquid is sealed inside the sampling assembly;

[0006] When sampling different waters at the same depth, the staff pushes the drive assembly, which moves downward to push the sampling assembly to close, and then starts the drive assembly. The drive assembly rotates so that the angle between the holding rod and the sampling assembly forms a right angle. During the synchronous process, the holding rod prompts the auxiliary stabilization assembly to unfold, so that when the sampling assembly enters the bottom of the pool horizontally, it can obtain support and stability.

[0007] As a further improvement of the present technical solution, the driving assembly includes a main shaft, the outer wall of the main shaft is rotatably connected to the lower end of the gripping rod, the side wall of the gripping rod is fixedly connected to a support frame, a motor is installed on the upper side of the support frame, and the output end of the motor is fixedly connected to the side wall of the main shaft.

[0008] As a further improvement of the present technical solution, the outer wall of the gripping rod is provided with a sliding groove, the inner wall of the sliding groove is slidably connected to a handle, the lower side of the handle is rotatably connected to a pressure rod, the lower end of the pressure rod is rotatably connected to an L-shaped rod, and the lower end of the L-shaped rod is fixedly connected to a connecting rod.

[0009] As a further improvement of the present technical solution, the sampling assembly includes a sampling rod, the upper end of the sampling rod is fixedly connected to the lower side of the main shaft, a number of sample chambers are evenly arranged inside the sampling rod from top to bottom, a number of sample chamber openings are slidably connected with valves, a cleaning frame is fixedly connected to the lower side of the valve, and the side wall is fixedly connected to the side wall of the connecting rod.

[0010] As a further improvement of the technical solution, a plurality of holes are provided inside the valve, pistons are slidably connected to the inner walls of the plurality of holes, and a fixing rod is fixedly connected to the inner wall, and a first spring is fixedly connected to the fixing rod and the opposite side of the piston.

[0011] As a further improvement of the technical solution, the side wall of the cleaning frame is rotatably connected to a cleaning roller.

[0012] As a further improvement of the present technical solution, the auxiliary stabilization assembly includes a slide rail, the side walls of the slide rail are fixedly connected to the side walls of the sampling rod, the inner wall of the slide rail is slidably connected to a slide plate, the upper end of the slide plate is rotatably connected to a rotating rod together with the side wall of the holding rod, and the side walls of the slide plate are evenly rotatably connected to a number of supporting feet.

[0013] As a further improvement of the technical solution, the inner walls of some of the support legs are slidably connected with suction cups, and the upper ends of the suction cups are fixedly connected to the inner walls of the support legs with a second spring.

[0014] As a further improvement of the present technical solution, when sampling at different depths, the staff uses the holding rod to move downward to push the sampling rod downward and insert it into the bottom of the pool. The staff then pulls down the handle, and the handle slides downward inside the slide groove and pushes the pressure rod downward. The downward movement of the pressure rod pushes the L-shaped rod downward, and the downward movement of the L-shaped rod pushes the connecting rod downward, driving the valve downward, thereby closing the sample chamber.

[0015] As a further improvement of the present technical solution, when sampling different waters at the same depth, the staff pulls down the handle, and the handle slides downward inside the slide groove and pushes the pressure rod downward, and the downward movement of the pressure rod pushes the L-shaped rod downward, and the downward movement of the L-shaped rod pushes the connecting rod downward to drive the valve downward, so that the sample chamber is closed, and the motor is immediately started, and the output end of the motor rotates to drive the main shaft to rotate until the angle between the holding rod and the sampling rod forms a right angle, and at the same time, the rotating rod rotates to push the slide plate to slide inside the slide rail, so that the supporting foot is vertically unfolded, and then the staff inserts the sampling rod into the bottom of the pool.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the bottom sampling device of the aquatic nursery pond, when sampling at different depths, the staff uses the gripping rod to move down and push the sampling assembly to move down and insert into the bottom of the pond. The sampling assembly is used to collect samples. Then the staff pulls down the driving assembly, and the driving assembly moves down to push the sampling assembly to close, so that the sample liquid is sealed inside the sampling assembly. This not only greatly shortens the working hours of the staff, but also ensures that the water quality details at different depths of the pond bottom can be captured, so that the water quality conditions can be more thoroughly understood, and the subtle differences in water quality at different depths can be seen. At the same time, one-time sampling avoids local deviations that may be caused by multiple operations, greatly improves the accuracy and representativeness of the sampling data, and provides more solid data support for water quality assessment.

[0018] 2. In the bottom sampling device of the aquatic nursery pond, when sampling different waters at the same depth, the staff pushes the driving component, the driving component moves downward to push the sampling component to close, and then starts the driving component, the driving component rotates so that the angle between the holding rod and the sampling component forms a right angle, and considering the instability caused by lateral insertion into the bottom of the water, the holding rod causes the auxiliary stabilization component to unfold during the synchronous process of the driving component rotating so that the angle between the holding rod and the sampling component forms a right angle, so that when the sampling component enters the bottom of the pond horizontally, it can obtain support and stability, effectively avoiding the deviation that may be caused by single-point sampling, and being able to more comprehensively grasp the overall water quality of the fry pond, thereby ensuring the accuracy and representativeness of the data. In the sampling process, with the help of the stabilizing effect of the suction cup and the support foot, the instability caused by human operation is reduced, and the efficiency and accuracy of sampling are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the sampling assembly of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the auxiliary stabilization component of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the driving assembly of the present invention;

[0023] Figure 5 It is a schematic diagram of the local structure of the present invention;

[0024] Figure 6 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 7 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0026] Figure 8 For the present invention Figure 5 Enlarged structural diagram at point C in the middle.

[0027] The meaning of each number in the figure is:

[0028] 101. Hold the pole;

[0029] 200, sampling assembly; 201, sampling rod; 202, valve; 203, sample chamber; 204, cleaning frame;

[0030] 2021, piston; 2022, fixing rod; 2023, first spring; 2024, hole;

[0031] 2041, cleaning roller;

[0032] 300, auxiliary stabilizing assembly; 301, slide rail; 302, rotating rod; 303, slide plate; 304, supporting foot; 305, suction cup; 306, second spring

[0033] 400, driving assembly; 401, slide; 402, handle; 403, pressure rod; 404, L-shaped rod; 405, connecting rod; 406, support frame; 407, motor; 408, main shaft. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Artificial breeding of aquatic animals such as sea cucumbers and shellfish must go through the important process of the planktonic period. The length of the planktonic period is determined by different species. For example, the planktonic period of sea cucumbers is generally 8 to 10 days, and the planktonic period of Yezo scallops is as long as 20 days. During the planktonic period of different types of aquatic organisms, in addition to sampling the planktonic larvae in the nursery pond water every day and observing their feeding, digestion and development conditions under a microscope, it is also particularly important to sample and observe the bottom of the pond, because unhealthy or dead planktonic larvae will sink. Observing the number of stunted or diseased larvae at the bottom of the pond is very meaningful for evaluating the health status of the planktonic larvae.

[0036] See also Figure 1 - Figure 8 As shown, this embodiment provides a bottom sampling device for an aquatic nursery pond, including a gripping rod 101, a sampling assembly 200 is provided at the lower side of the gripping rod 101, an auxiliary stabilizing assembly 300 is provided at the side wall of the sampling assembly 200, and a driving assembly 400 is provided at the side wall of the gripping rod 101, wherein:

[0037] When sampling at different depths, the staff uses the gripping rod 101 to move downward to push the sampling assembly 200 downward to insert into the pool bottom, and then the staff pulls down the driving assembly 400, and the driving assembly 400 moves downward to push the sampling assembly 200 to close, so that the sample liquid is sealed inside the sampling assembly 200;

[0038] When sampling different waters at the same depth, the staff pushes the drive assembly 400, which moves downward to push the sampling assembly 200 to close, and then starts the drive assembly 400. The drive assembly 400 rotates so that the angle between the holding rod 101 and the sampling assembly 200 forms a right angle. During the synchronous process, the holding rod 101 prompts the auxiliary stabilization assembly 300 to unfold, so that when the sampling assembly 200 enters the bottom of the pool horizontally, it can obtain support and stability.

[0039] The present invention takes into account that in the traditional pool bottom sampling process, sampling can usually only be performed at a certain depth of the pool bottom. If sampling is required at different depths of the pool bottom, multiple reciprocating operations are required, which not only increases the work intensity, but also prolongs the sampling time. Therefore, when sampling at different depths, the staff uses the gripping rod 101 to move down and push the sampling assembly 200 to move down and insert into the pool bottom. The sampling assembly 200 is used to collect samples, and then the staff pulls down the drive assembly 400, and the drive assembly 400 moves down to push the sampling assembly 200 to close, so that the sample liquid is sealed inside the sampling assembly 200, thereby not only greatly shortening the working hours of the staff, but also ensuring that the water quality details at different depths of the pool bottom can be captured, so that a more detailed understanding of the water quality conditions can be obtained, and the subtle differences in water quality at different depths can be observed. At the same time, one-time sampling avoids local deviations that may be caused by multiple operations, greatly improves the accuracy and representativeness of the sampling data, and provides more solid data support for water quality assessment.

[0040] Secondly, the present invention also takes into account sampling at the same depth but in different waters, which also requires the staff to repeatedly insert the equipment into the bottom of the pool. This operation is time-consuming and laborious, and significantly reduces the overall work efficiency of sampling. Therefore, when sampling at the same depth but in different waters, the staff pushes the drive assembly 400, and the drive assembly 400 moves downward to push the sampling assembly 200 to close, and then starts the drive assembly 400. The drive assembly 400 rotates so that the angle between the holding rod 101 and the sampling assembly 200 forms a right angle, and considering the instability caused by lateral insertion into the bottom of the water, the drive assembly 400 rotates so that the angle between the holding rod 101 and the sampling assembly 200 forms a right angle simultaneously. The holding rod 101 prompts the auxiliary stabilization assembly 300 to unfold, so that when the sampling assembly 200 enters the bottom of the pool horizontally, it can obtain support and stability, effectively avoiding the deviation that may be caused by single-point sampling, and can more comprehensively grasp the overall water quality of the fry pond, thereby ensuring the accuracy and representativeness of the data. During the sampling process, with the stabilizing effect of the suction cup 305 and the support foot 304, the instability caused by human operation is reduced, and the efficiency and accuracy of sampling are improved.

[0041] The following items need to be disclosed:

[0042] First of all, it can significantly shorten the working hours of the staff, and ensure that the water quality details at different depths of the pool bottom are captured, so that we can have a more detailed understanding of the water quality and gain insight into the subtle differences in water quality at different depths, such as Figure 2 - Figure 5As shown, the driving assembly 400 includes a main shaft 408, the outer wall of the main shaft 408 is rotatably connected to the lower end of the holding rod 101, the side wall of the holding rod 101 is fixedly connected to a support frame 406, a motor 407 is installed on the upper side of the support frame 406, the output end of the motor 407 is fixedly connected to the side wall of the main shaft 408, the outer wall of the holding rod 101 is provided with a slide groove 401, the inner wall of the slide groove 401 is slidably connected to a handle 402, the lower side of the handle 402 is rotatably connected to a pressure rod 403, the lower end of the pressure rod 403 is rotatably connected to an L-shaped rod 404, the lower end of the L-shaped rod 404 is fixedly connected to a connecting rod 405, the sampling assembly 200 includes a sampling rod 201, the upper end of the sampling rod 201 is fixedly connected to the lower side of the main shaft 408, a plurality of sample chambers 203 are evenly arranged inside the sampling rod 201 from top to bottom, a plurality of sample chambers 203 are slidably connected to the openings of the sample chambers 203, and the lower side of the valve 202 is fixed A cleaning frame 204 is connected, and the side wall is fixedly connected to the side wall of the connecting rod 405. A plurality of holes 2024 are arranged inside the valve 202. The inner walls of the plurality of holes 2024 are slidably connected with pistons 2021, and the inner wall is fixedly connected with a fixing rod 2022. The fixing rod 2022 and the piston 2021 are fixedly connected with a first spring 2023 on the opposite side. The side wall of the cleaning frame 204 is rotatably connected with a cleaning roller 2041. When sampling at different depths, the staff uses the gripping rod 101 to move downward to push the sampling rod 201 downward to insert into the bottom of the pool. Then the staff pulls down the handle 402. The handle 402 slides downward inside the slide groove 401 and pushes the pressure rod 403 downward. The pressure rod 403 moves downward to push the L-shaped rod 404 downward. The L-shaped rod 404 moves downward to push the connecting rod 405 downward to drive the valve 202 downward, so that the sample chamber 203 is closed.

[0043] The main shaft 408 is used to drive the holding rod 101 and the sampling rod 201 to rotate by rotating, the support frame 406 is used to provide the motor 407 with stable operation, the motor 407 is used to drive the main shaft 408 to rotate by rotating the output end, the slide groove 401 is used for the handle 402 to move inside it, ensuring that the movement trajectory of the handle 402 is normal, the handle 402 is used for the staff to hold and press down, so that the handle 402 drives the pressure rod 403 to move downward by moving downward, the pressure rod 403 moves downward to push the L-shaped rod 404 to move downward, and the L-shaped rod 404 moves downward to drive the connecting rod 405 moves downward, thereby driving the valve 202 to slide down through the downward movement of the connecting rod 405, and closing the sample chamber 203. The sample chamber 203 is used to store samples, and the hole 2024 is used to allow external liquid to enter the sample chamber 203 through the hole 2024. The piston 2021 is used to block the hole 2024 to prevent the internal liquid of the sample chamber 203 from escaping. The first spring 2023 is used to pull the piston 2021 into the hole 2024 by telescoping, and the cleaning frame 204 is used to drive the cleaning roller 2041 to move inside the sample chamber 203 to clean its inner wall. This not only greatly shortens the working hours of the staff, but also ensures that the water quality details at different depths of the pool bottom can be captured, so that a more detailed understanding of the water quality status can be obtained, and the subtle differences in water quality at different depths can be observed. At the same time, one-time sampling avoids local deviations that may be caused by multiple operations, greatly improves the accuracy and representativeness of the sampling data, and provides more solid data support for water quality assessment;

[0044] Specifically, the staff member operates the gripping rod 101 to move it downward, thereby pushing the sampling rod 201 downward until it is inserted into the bottom of the pool. Subsequently, the staff member pulls the handle 402 to move it downward and slide along the inside of the chute 401, and this action pushes the pressure rod 403 downward. The downward movement of the pressure rod 403 further pushes the L-shaped rod 404 downward, and the downward movement of the L-shaped rod 404 drives the connecting rod 405 downward, thereby prompting the valve 202 to move downward to close the sample chamber 203. In addition, the rotation of the main shaft 408 is used to drive the gripping rod 101 and the sampling rod 201 to rotate. The support frame 406 provides a stable working environment for the motor 407, and the rotation of the output end of the motor 407 drives the main shaft 408 to rotate. The chute 401 ensures that the handle 402 has a normal trajectory when it moves inside it. The handle 402 is designed to be easy for the staff to hold and press down. The downward movement drives the pressure rod 403 to move downward, and then pushes the L-shaped rod 404 and the connecting rod 405 to move downward, and finally the valve 202 slides down to close the sample chamber 203. The sample chamber 203 is used to store samples. The hole 2024 allows external liquid to flow into the sample chamber 203, and the piston 2021 is used to block the hole 2024 to prevent the internal liquid of the sample chamber 203 from leaking. The first spring 2023 pulls the piston 2021 into the hole 2024 by telescoping. In addition, the cleaning frame 204 drives the cleaning roller 2041 to move inside the sample chamber 203 to clean its inner wall. This operation not only greatly reduces the working time of the staff, but also ensures that the water quality details at different depths of the pool bottom can be captured, providing a more detailed understanding of the water quality status and insight into the subtle differences in water quality at different depths. At the same time, one-time sampling avoids local deviations that may be caused by multiple operations, greatly improves the accuracy and representativeness of the sampling data, and provides more solid data support for water quality assessment.

[0045] Secondly, it is necessary to effectively avoid the possible deviation caused by single-point sampling, and more comprehensively grasp the overall water quality of the fry pond to ensure the accuracy and representativeness of the data. Figure 3 - Figure 6As shown, the driving assembly 400 includes a main shaft 408, the outer wall of the main shaft 408 is rotatably connected to the lower end of the holding rod 101, the side wall of the holding rod 101 is fixedly connected to a support frame 406, a motor 407 is installed on the upper side of the support frame 406, the output end of the motor 407 is fixedly connected to the side wall of the main shaft 408, the outer wall of the holding rod 101 is provided with a slide groove 401, the inner wall of the slide groove 401 is slidably connected to a handle 402, the lower side of the handle 402 is rotatably connected to a pressure rod 403, the lower end of the pressure rod 403 is rotatably connected to an L-shaped rod 404, and the lower end of the L-shaped rod 404 is fixedly connected to a connecting rod 405, the sampling assembly 200 includes a sampling rod 201, the upper end of the sampling rod 201 is fixedly connected to the lower side of the main shaft 408, a plurality of sample chambers 203 are evenly arranged inside the sampling rod 201 from top to bottom, and valves 202 are slidably connected to the openings of the plurality of sample chambers 203. The auxiliary stabilization assembly 300 includes a slide rail 301, the side wall of the slide rail 301 is fixedly connected to the side wall of the sampling rod 201, the inner wall of the slide rail 301 is slidably connected to a slide plate 303, the upper end of the slide plate 303 is connected to the side wall of the gripping rod 101 and is connected to a rotating rod 302 for rotation, the side wall of the slide plate 303 is evenly connected to a plurality of supporting feet 304 for rotation, the inner walls of the plurality of supporting feet 304 are slidably connected to suction cups 305, the upper end of the suction cups 305 and the inner walls of the supporting feet 304 are fixedly connected to a second spring 306, when sampling different waters at the same depth, the staff pulls down the handle 402, and the handle 402 is in the slide groove 4 01 moves downward and slides, pushing the pressure rod 403 downward, pushing the L-shaped rod 404 downward, pushing the connecting rod 405 downward to drive the valve 202 downward, so that the sample chamber 203 is closed, and then the motor 407 is started, and the output end of the motor 407 rotates to drive the main shaft 408 to rotate until the angle between the holding rod 101 and the sampling rod 201 forms a right angle. At the same time, the rotating rod 302 rotates to push the slide plate 303 to slide inside the slide rail 301, so that the supporting foot 304 is vertically unfolded, and then the staff inserts the sampling rod 201 into the bottom of the pool, wherein:

[0046] The rotation of the main shaft 408 is used to drive the gripping rod 101 and the sampling rod 201 to rotate. The support frame 406 provides a stable working environment for the motor 407, and the rotation of the output end of the motor 407 drives the main shaft 408 to rotate. The slide groove 401 ensures that the handle 402 has a normal trajectory when it moves inside. The design of the handle 402 is convenient for the staff to hold and press down, and the downward movement drives the pressure rod 403 to move down, and then pushes the L-shaped rod 404 and the connecting rod 405 to move down, and finally the valve 202 slides down to close the sample chamber 203. The slide rail 301 is used for the stable sliding of the slide plate 303, the rotating rod 302 is used to push the slide plate 303 to slide by rotating, the slide plate 303 is used to unfold the support foot 304 by sliding, the support foot 304 is used to support the sampling rod 201 placed horizontally, the suction cup 305 is used to enhance the stability of the support foot 304 and the bottom of the pond, thereby improving the stability of the sampling rod 201 during sampling, and the second spring 306 allows the suction cup 305 to adapt to different heights by contraction and extension, thereby improving applicability, effectively avoiding the deviation that may be caused by single-point sampling, and being able to more comprehensively grasp the overall water quality of the fry pond, thereby ensuring the accuracy and representativeness of the data. During the sampling process, with the help of the stabilizing effect of the suction cup 305 and the support foot 304, the instability caused by human operation is reduced, and the efficiency and accuracy of sampling are improved;

[0047] Specifically, when sampling different waters at the same depth, the staff needs to operate the handle 402 to move downward along the inside of the slide 401, thereby driving the pressure rod 403 and the L-shaped rod 404 connected thereto to move downward synchronously. The movement of the L-shaped rod 404 will drive the connecting rod 405 and the valve 202 to move downward, thereby closing the sample chamber 203. Subsequently, the motor 407 is started, and its output end will drive the main shaft 408 to rotate until the angle between the holding rod 101 and the sampling rod 201 is at a right angle. At the same time, the rotation of the rotating rod 302 will push the slide plate 303 to slide stably in the slide rail 301, thereby allowing the support foot 304 to be vertically unfolded. At this time, the staff can insert the sampling rod 201 into the bottom of the pool. The slide rail 301 ensures the smooth movement of the slide plate 303, and the rotating rod 302 pushes the slide plate 303 to slide by rotating. The movement of the slide plate 303 drives the support foot 304 to unfold, and the support foot 304 is used to stabilize the sampling rod 201 placed horizontally. In addition, the suction cup 305 is used to enhance the stability of the support foot 304 and the bottom of the pond, thereby improving the stability of the sampling rod 201 during the sampling process. The second spring 306, through its telescopic function, enables the suction cup 305 to adapt to different heights, thereby improving the applicability of the device. This design effectively avoids the deviation that may be caused by single-point sampling, can more comprehensively reflect the overall water quality of the fry pond, and ensure the accuracy and representativeness of the data. During the sampling process, the stabilizing effect of the suction cup 305 and the support foot 304 reduces the instability of manual operation and significantly improves the efficiency and accuracy of sampling.

[0048] The specific working principle is described as follows:

[0049] When sampling at different depths, the operator precisely controls the downward movement of the gripping rod 101 to ensure that the sampling rod 201 can be smoothly inserted into the pool bottom. Subsequently, the operator pulls the handle 402 to steadily slide down along the inside of the slide groove 401 and generate a sliding displacement, which effectively pushes the pressing rod 403 to move downward synchronously. The downward movement of the pressing rod 403 pushes the L-shaped rod 404 downward, and the downward movement of the L-shaped rod 404 drives the connecting rod 405 downward, thereby prompting the valve 202 to move downward to close the sample chamber 203.

[0050] When sampling different waters at the same depth, the operator needs to accurately operate the handle 402 to move downward along the inside of the slide 401 to drive the pressure rod 403 and the L-shaped rod 404 closely connected thereto to move downward synchronously. The movement of the L-shaped rod 404 will drive the connecting rod 405 and the valve 202 to move downward, thereby ensuring the closure of the sample chamber 203. Subsequently, the motor 407 is started, and its output end will accurately drive the main shaft 408 to rotate until the angle between the holding rod 101 and the sampling rod 201 reaches a precise right angle state. At the same time, the rotation of the rotating rod 302 will push the slide plate 303 to slide stably in the slide rail 301, thereby ensuring that the supporting foot 304 is vertically unfolded. At this time, the operator can accurately insert the sampling rod 201 into the bottom of the pool.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bottom sampling device for an aquatic nursery pond, comprising a holding rod (101), characterized in that: A sampling assembly (200) is provided on the lower side of the gripping rod (101), an auxiliary stabilization assembly (300) is provided on the side wall of the sampling assembly (200), and a driving assembly (400) is provided on the side wall of the gripping rod (101), wherein: When sampling at different depths, the staff uses the gripping rod (101) to move downward to push the sampling assembly (200) downward to insert into the pool bottom, and then the staff pulls down the driving assembly (400), and the driving assembly (400) moves downward to push the sampling assembly (200) to close, so that the sample liquid is sealed inside the sampling assembly (200); When sampling different waters at the same depth, a worker pushes the driving assembly (400), and the driving assembly (400) moves downward to push the sampling assembly (200) to close, and then starts the driving assembly (400), and the driving assembly (400) rotates so that the angle between the holding rod (101) and the sampling assembly (200) forms a right angle. During the synchronous process, the holding rod (101) prompts the auxiliary stabilization assembly (300) to unfold, so that when the sampling assembly (200) enters the pool bottom horizontally, it can obtain support and stability; The driving assembly (400) comprises a main shaft (408), the outer wall of the main shaft (408) is rotatably connected to the lower end of the gripping rod (101), the side wall of the gripping rod (101) is fixedly connected to a support frame (406), a motor (407) is installed on the upper side of the support frame (406), and the output end of the motor (407) is fixedly connected to the side wall of the main shaft (408); the outer wall of the gripping rod (101) is provided with a slide groove (401), the inner wall of the slide groove (401) is slidably connected to a handle (402), the lower side of the handle (402) is rotatably connected to a pressure rod (403), the lower end of the pressure rod (403) is rotatably connected to an L-shaped rod (404), and the lower end of the L-shaped rod (404) is fixedly connected to a connecting rod (405); The sampling assembly (200) comprises a sampling rod (201), the upper end of the sampling rod (201) is fixedly connected to the lower side of the main shaft (408), a plurality of sample chambers (203) are evenly arranged inside the sampling rod (201) from top to bottom, a plurality of valves (202) are slidably connected at the openings of the plurality of sample chambers (203), a cleaning frame (204) is fixedly connected to the lower side of the valve (202), and the side wall is fixedly connected to the side wall of the connecting rod (405), a plurality of holes (2024) are arranged inside the valve (202), a plurality of pistons (2021) are slidably connected to the inner walls of the plurality of holes (2024), and a fixing rod (2022) is fixedly connected to the inner wall, and a first spring (2023) is fixedly connected to the opposite side of the fixing rod (2022) and the piston (2021); The auxiliary stabilization assembly (300) comprises a slide rail (301), the side wall of the slide rail (301) is fixedly connected to the side wall of the sampling rod (201), the inner wall of the slide rail (301) is slidably connected to a slide plate (303), the upper end of the slide plate (303) is rotatably connected to a rotating rod (302) together with the side wall of the holding rod (101), and the side wall of the slide plate (303) is evenly rotatably connected to a plurality of supporting legs (304).

2. The bottom sampling device for aquatic nursery pond according to claim 1, characterized in that: The side wall of the cleaning frame (204) is rotatably connected to a cleaning roller (2041).

3. The bottom sampling device of aquatic nursery pond according to claim 1 is characterized in that: The inner walls of the plurality of support legs (304) are slidably connected to suction cups (305), and the upper ends of the suction cups (305) and the inner walls of the support legs (304) are fixedly connected to a second spring (306).

4. The bottom sampling device of aquatic nursery pond according to claim 3 is characterized in that: When sampling at different depths, the staff uses the gripping rod (101) to move downward to push the sampling rod (201) downward to insert into the pool bottom, and then the staff pulls down the handle (402), and the handle (402) slides downward inside the slide groove (401) and pushes the pressure rod (403) downward, and the pressure rod (403) moves downward to push the L-shaped rod (404) downward, and the L-shaped rod (404) moves downward to push the connecting rod (405) downward to drive the valve (202) downward, so that the sample chamber (203) is closed.

5. The bottom sampling device of aquatic nursery pond according to claim 4 is characterized in that: When sampling different waters at the same depth, the staff member pulls down the handle (402), and the handle (402) slides downward inside the slide groove (401) and pushes the pressure rod (403) downward, and the pressure rod (403) moves downward to push the L-shaped rod (404) downward, and the L-shaped rod (404) moves downward to push the connecting rod (405) downward to drive the valve (202) downward, so that the sample chamber (203) is closed, and then the motor (407) is started, and the output end of the motor (407) rotates to drive the main shaft (408) to rotate until the angle between the holding rod (101) and the sampling rod (201) forms a right angle, and at the same time, the rotating rod (302) rotates to push the slide plate (303) to slide inside the slide rail (301), so that the supporting foot (304) is vertically unfolded, and then the staff member inserts the sampling rod (201) into the bottom of the pool.

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