An aquatic organism sampling device

Abstract

This invention relates to the field of aquatic organism sampling, specifically to an aquatic organism sampling device, comprising a base plate, a top plate, and a sampling mechanism. The sampling mechanism includes a sampling bottle, an opening / closing full-load unit, and a closing auxiliary sampling unit. The opening / closing full-load unit includes a cylinder, a telescopic tube, a pressure plate, and a cover plate connected in sequence. The closing auxiliary sampling unit includes a telescopic rod and a cleaning section. One end of the telescopic rod is connected to the cover plate, and the other end is fixedly connected to a first gear. A motor is installed inside the base plate, and the motor is connected to a second gear. The first gear can mesh with the second gear. An auxiliary sampling groove is provided on the lower surface of the cover plate, and the cleaning section is located inside the auxiliary sampling groove. An internal pressure sensor is provided at the bottom of the sampling bottle, and an external pressure sensor is provided outside the sampling bottle. The internal and external pressure sensors are electrically connected to the motor and each cylinder through a controller. This technical solution is beneficial for sampling at different water depths and improving the accuracy of subsequent aquatic organism detection.

Description

Technical Field

[0001] This invention relates to the field of aquatic organism sampling, and more specifically to an aquatic organism sampling device. Background Technology

[0002] In the process of collecting aquatic organisms, such as aquatic plants, aquatic organisms are indirectly collected by collecting water samples. Current sampling devices generally include a sampling bottle and a cover plate located at the inlet at the bottom of the sampling bottle. As the sampling bottle sinks, the cover plate opens, and the aquatic organisms enter the sampling bottle along with the water sample. After collection, the sampling bottle is pulled up, and the cover plate blocks the inlet, thus completing the sampling.

[0003] However, the current sampling device has the following problems: First, it cannot sample different water depths; second, the cover plate may not be able to close due to debris during the process of blocking the feed inlet, which will result in the mixing of samples from different water depths in the sampling bottle; third, the current sampling device cannot be filled with water samples, and the flow of water samples during the transfer process will affect the biological samples, thereby affecting the accuracy of subsequent detection of aquatic organisms. Summary of the Invention

[0004] The present invention aims to provide an aquatic organism sampling device that can comprehensively solve the problems of sampling at different water depths, the inability of the cover plate to close smoothly, and the inability of the sampling device to be filled with water samples.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an aquatic organism sampling device, comprising a bottom plate, a top plate, a controller, and a plurality of sampling mechanisms distributed between the bottom plate and the top plate, each sampling mechanism comprising a sampling bottle, an opening and closing full-load unit, and a closing auxiliary sampling unit, wherein the sampling bottle and the bottom plate are fixedly connected and the bottom plate and the sampling bottle are provided with a through hole for communication; The opening and closing full-load unit includes a cylinder, a telescopic tube, a pressure plate, a cover plate, and a connecting rod. The sampling bottle is fixedly connected to the top plate via the connecting rod. The top plate is equipped with a hook. The cylinder is located inside the top plate. The telescopic tube is fixedly connected to the output shaft of the cylinder. The pressure plate is fixedly connected to the telescopic tube and can block the mouth of the sampling bottle. The cover plate is connected to the telescopic tube and can block the through hole. The telescopic tube is fixedly connected to an abutment block. The cover plate is equipped with a convex hole, and the abutment block is movably disposed in the convex hole. The closed sampling unit includes an L-shaped rod, a push-pull rod, a telescopic rod, and a cleaning section. The side wall and bottom of the sampling bottle are provided with a connecting channel. One end of the L-shaped rod is fixedly connected to the telescopic tube. The other end of the L-shaped rod and one end of the push-pull rod are slidably set in the channel and are inclined. The other end of the push-pull rod is fixedly connected to a push-pull ring. The telescopic rod is rotatably connected to the push-pull ring. One end of the telescopic rod is fixedly connected to a cover plate, and the cover plate can rotate with the telescopic rod. The other end of the telescopic rod is fixedly connected to a first gear. A motor is provided in the bottom plate. The motor is connected to a second gear, and the first gear can mesh with the second gear. The lower surface of the cover plate is provided with a sampling groove that communicates with a convex hole. The cleaning section includes an abutment rod and several cleaning strips arranged side by side. The middle part of the cleaning strip is rotatably set in the sampling groove. The upper end of the cleaning strip is connected to the abutment rod, and the abutment rod can abut against the abutment block. An internal pressure sensor is installed at the bottom of the sampling bottle, and an external pressure sensor is installed on the outside of the sampling bottle. The internal and external pressure sensors are electrically connected to the motor and each cylinder through the controller.

[0006] The beneficial effects of this scheme are as follows: During sampling, the rope is tied to the hook, and then the sampling device is placed in the water. During the sinking process, the water pressure is proportional to the water depth. The water pressure is detected by an external pressure sensor and converted into a water depth value. After the controller reaches the preset value, the controller controls one of the cylinders to start. The telescopic tube moves the pressure shield and cover plate to release the blockage of the sampling bottle opening and the through hole. Aquatic organisms enter the sampling bottle with the water sample. After the internal pressure sensor detects that the pressure has reached the controller's preset value, the cylinder, through the telescopic tube, moves the pressure shield and water to apply pressure to the cover plate, causing the pressure shield and cover plate to move in opposite directions to block the sampling bottle opening and the through hole. During the blocking process, the sampling bottle between the pressure shield and the cover plate is filled with water sample, thereby reducing the fluidity of the water sample during the transfer process, which helps to improve the accuracy of subsequent detection of aquatic organisms. When the sampling device sinks to different sampling depths, the controller controls each cylinder to start to complete the sampling at different water depths.

[0007] After sampling at the corresponding depth, during the process of sealing the bottle opening and through hole by the pressure plate and cover plate, if there is debris blocking the bottom of the sampling bottle, preventing the cover plate from completely sealing the through hole, the internal pressure sensor detects that the pressure has not reached the controller's preset value. The cylinder will drive the telescopic tube to continue moving a certain distance, during which the telescopic tube retracts. As the telescopic tube continues to move, it drives the L-shaped rod to move, thereby driving the push-pull rod and push-pull ring to move, which in turn drives the telescopic rod, cover plate, and first gear to move, so that the first gear meshes with the second gear. At the same time, the movement of the cover plate drives the cleaning part to move. After the abutting rod abuts against the abutting block, the cleaning strip rotates and exposes the sampling groove.

[0008] After gear one meshes with gear two, the controller starts the motor and drives gear two to rotate, which in turn drives gear one, the telescopic rod, and the cover plate to rotate. During the rotation of the cover plate, the cleaning strip sweeps away the debris at the bottom of the sampling bottle. After sweeping, the motor is turned off, the cylinder and corresponding components are reset, and the cylinder again drives the pressure plate and the cover plate through the telescopic tube to seal the bottle opening and the through hole of the sampling bottle until the internal pressure sensor detects that the pressure reaches the standard.

[0009] As the cover plate rotates, the walls of the sampling trough cause the water to flow towards the through hole, and the water converges into the sampling bottle, forming a suction flow. This non-natural suction effect is beneficial for drawing water and aquatic organisms into the sampling bottle, especially highlighting the role of the sampling trough when the sampling cannot be completed in one go due to obstruction by debris.

[0010] Furthermore, the telescopic tube includes an outer tube and an inner tube that is slidably connected to the outer tube through friction. The outer tube is fixedly connected to the output shaft of the cylinder. The pressure plate is fixedly connected to the outer tube, and the cover plate is connected to the inner tube. The abutment block is fixedly connected to the inner tube. The telescopic rod includes an outer rod and an inner rod. The outer rod is rotatably connected to the push-pull ring. The inner rod is square and one end of the inner rod is slidably connected to the outer rod. The other end of the inner rod is fixedly connected to the cover plate. The first gear is fixedly connected to the outer rod.

[0011] Furthermore, the abutment block is cam-shaped, and the connection point between the inner tube and the abutment block is at the small diameter end of the abutment block.

[0012] Furthermore, there are three sampling bottles, which are arranged in a triangular shape, with both the bottom and top plates in the shape of a Reuleaux triangle.

[0013] Furthermore, an outer casing is provided between the bottom plate and the top plate. The outer casing is also in the shape of a Reuleaux triangle, and the external pressure sensor is located on the outer casing.

[0014] Furthermore, the outer tube and L-shaped rod are provided with a flow channel connecting the sampling bottle, and a blockage is provided at the flow channel.

[0015] Furthermore, the lower surface of the base plate is provided with an annular cavity, in which gears No. 1 and No. 2 are located.

[0016] Furthermore, the cleaning strip is made of rubber or nylon. Attached Figure Description

[0017] Figure 1 This is a three-dimensional diagram of the present invention; Figure 2 This is a three-dimensional view of the present invention with the outer casing omitted; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a cross-sectional view of the present invention with the hook omitted; Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0018] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: base plate 1, top plate 2, sampling bottle 3, outer shell 4, pressure plate 5, cover plate 6, connecting rod 7, outer tube 8, inner tube 9, abutment block 10, L-shaped rod 11, push-pull rod 12, push-pull ring 13, outer rod 14, inner rod 15, gear 16, gear 2 17, flow channel 18, sampling aid trough 19, abutment rod 20, and cleaning strip 21. Detailed Implementation

[0019] Example The basic implementation examples are as follows: Figure 1-5 As shown, Figure 1 , 2 The aquatic organism sampling device shown includes a base plate 1, a top plate 2, a controller, and several sampling mechanisms distributed between the base plate 1 and the top plate 2. In this embodiment, there are three sampling mechanisms. Each sampling mechanism includes a sampling bottle 3, an opening and closing full-load unit, and a closing auxiliary sampling unit. The three sampling bottles 3 are distributed in a triangular shape. A hook is welded on the top plate 2. Both the base plate 1 and the top plate 2 are Reuleaux triangles. An outer shell 4 can also be welded between the base plate 1 and the top plate 2. The cross-section of the outer shell 4 is also Reuleaux triangle. When the rope is tied to the hook, it helps to balance the impact of multi-directional water flow during the sinking process of the device and reduce the tilt of the device in the water.

[0020] like Figure 3 , 4 As shown, the sampling bottle 3 and the base plate 1 are fixedly connected, and the bottom of the base plate 1 and the sampling bottle 3 have a through hole communicating with each other; the opening and closing full-load unit includes a cylinder, a telescopic tube, a pressure plate 5, a cover plate 6, and a connecting rod 7. The sampling bottle 3 is fixedly connected to the top plate 2 through the connecting rod 7. The cylinder is set inside the top plate 2. The telescopic tube includes an outer tube 8 and an inner tube 9 that is rubbed and slidably connected to the outer tube 8. The inner tube 9 can also be rod-shaped. The outer tube 8 is fixedly connected to the output shaft of the cylinder. The pressure plate 5 is fixedly connected to the outer tube 8 and can block the bottle mouth of the sampling bottle 3. The cover plate 6 is connected to the inner tube 9 and can block the through hole. Figure 5 As shown, an abutment block 10 is welded to the inner tube 9. The abutment block 10 is cam-shaped, and the connection position between the inner tube 9 and the abutment block 10 is at the small-diameter end of the abutment block 10. A convex hole is opened on the cover plate 6, and the abutment block 10 is movably disposed in the convex hole. Alternatively, a receiving cavity can be opened in the side wall of the sampling bottle 3, and a cylinder can be installed in the receiving cavity. A limiting rod is welded to the output shaft of the cylinder. The limiting rod extends into the interior of the sampling bottle 3 and is located on the upper surface of the cover plate 6, which is not shown in the figure.

[0021] The closed sampling unit includes an L-shaped rod 11, a push-pull rod 12, a telescopic rod, and a cleaning section. The sampling bottle 3 has a connecting channel on its side wall and bottom. One end of the L-shaped rod 11 is welded to the outer tube 8. The other end of the L-shaped rod 11 and one end of the push-pull rod 12 are slidably positioned within the channel and fitted at an angle. A push-pull ring 13 is welded to the other end of the push-pull rod 12 and is located within a through hole. The telescopic rod includes an outer rod 14 and an inner rod 15. The outer rod 14 is rotatably connected to the push-pull ring 13 via a bearing. The inner rod 15 is square, and its lower end is slidably connected to the outer rod 14. The upper end of the inner rod 15 is welded to the cover plate 6. A first gear 16 is fixedly connected to the outer rod 14 with an interference fit. A motor is installed inside the base plate 1, and the motor is connected to a second gear 17. The first gear 16 can mesh with the second gear 17. The initial position of the motor is as follows... Figure 4 As shown, the motor rotates an integer number of revolutions to return to its initial position; an annular cavity is opened on the lower surface of the base plate 1, and gear 16 and gear 17 are located in the annular cavity; the motor and each cylinder are waterproofed, and sealing rings are installed at their output shafts or wires for sealing.

[0022] like Figure 3 , 4 As shown, the outer tube 8 and the L-shaped rod 11 are provided with a flow channel 18 that connects to the sampling bottle 3. A plug is provided at the flow channel 18. After sampling, the water sample can be poured out by opening the plug. When the outer shell 4 is provided between the bottom plate 1 and the top plate 2, the flow channel 18 is connected to the curved hose to the outer shell 4, and the plug is provided at the hole of the outer shell 4.

[0023] like Figure 5 As shown, the lower surface of the cover plate 6 has an auxiliary mining groove 19 communicating with the convex hole. The cleaning part includes an abutment rod 20 and several densely arranged cleaning strips 21. An auxiliary strip is welded inside the auxiliary mining groove 19. The middle part of the cleaning strip 21 is rotatably connected to the auxiliary strip by a pin. The upper end of the cleaning strip 21 is rotatably connected to the abutment rod 20. The abutment rod 20 can abut against the abutment block 10 to make the inclined cleaning strip 21 rotate. The lower end of the cleaning strip 21 is exposed in the auxiliary mining groove 19. The cleaning strip 21 is made of rubber strips or nylon strips, etc. Figure 3 , 4 The difference shown by the sampling bottles 3 on the left and right sides is that gear 16 and gear 17 on the right side are not in contact, the abutment rod 20 is not abutting against the abutment block 10, and the cleaning strip 21 is tilted inside the sampling groove 19. In addition, there are return springs between the push-pull rod 12 and the sampling bottle 3, and between the abutment rod 20 and the cover plate 6. The sampling bottle 3 and the cover plate 6 can be manufactured by splicing and welding.

[0024] An internal pressure sensor is installed at the bottom of the sampling bottle 3. When the outer shell 4 is not installed between the bottom plate 1 and the top plate 2, an external pressure sensor is installed on the outside of the sampling bottle 3. When the outer shell 4 is installed between the bottom plate 1 and the top plate 2, the external pressure sensor is installed on the outer shell 4. The internal pressure sensor and the external pressure sensor are electrically connected to the motor and each cylinder through the controller, respectively. The external pressure sensor can utilize the physical law that water pressure is proportional to water depth (freshwater: 1 meter water depth is approximately equal to 0.098 bar pressure; seawater: 1 meter water depth is approximately equal to 0.103 bar pressure) to measure the water pressure by assuming that 1 meter water depth is equal to 0.1 bar pressure, and convert it into a water depth value.

[0025] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An aquatic organism sampling device, characterized by: It includes a base plate, a top plate, a controller, and several sampling mechanisms distributed between the base plate and the top plate. Each sampling mechanism includes a sampling bottle, an opening and closing full-load unit, and a closing auxiliary sampling unit. The sampling bottle and the base plate are fixedly connected, and the base plate and the sampling bottle are provided with a through hole that communicates with each other. The opening and closing full-load unit includes a cylinder, a telescopic tube, a pressure plate, a cover plate, and a connecting rod. The sampling bottle is fixedly connected to the top plate via the connecting rod. The top plate is equipped with a hook. The cylinder is located inside the top plate. The telescopic tube is fixedly connected to the output shaft of the cylinder. The pressure plate is fixedly connected to the telescopic tube and can block the mouth of the sampling bottle. The cover plate is connected to the telescopic tube and can block the through hole. The telescopic tube is fixedly connected to an abutment block. The cover plate is equipped with a convex hole, and the abutment block is movably disposed in the convex hole. The closed sampling unit includes an L-shaped rod, a push-pull rod, a telescopic rod, and a cleaning section. The side wall and bottom of the sampling bottle are provided with a connecting channel. One end of the L-shaped rod is fixedly connected to the telescopic tube. The other end of the L-shaped rod and one end of the push-pull rod are slidably set in the channel and are inclined. The other end of the push-pull rod is fixedly connected to a push-pull ring. The telescopic rod is rotatably connected to the push-pull ring. One end of the telescopic rod is fixedly connected to a cover plate, and the cover plate can rotate with the telescopic rod. The other end of the telescopic rod is fixedly connected to a first gear. A motor is provided in the bottom plate. The motor is connected to a second gear, and the first gear can mesh with the second gear. The lower surface of the cover plate is provided with a sampling groove that communicates with a convex hole. The cleaning section includes an abutment rod and several cleaning strips arranged side by side. The middle part of the cleaning strip is rotatably set in the sampling groove. The upper end of the cleaning strip is connected to the abutment rod, and the abutment rod can abut against the abutment block. An internal pressure sensor is installed at the bottom of the sampling bottle, and an external pressure sensor is installed on the outside of the sampling bottle. The internal and external pressure sensors are electrically connected to the motor and each cylinder through the controller.

2. An aquatic organism sampling device according to claim 1, wherein: The telescopic tube includes an outer tube and an inner tube that is slidably connected to the outer tube. The outer tube is fixedly connected to the output shaft of the cylinder. The pressure plate is fixedly connected to the outer tube. The cover plate is connected to the inner tube. The abutment block is fixedly connected to the inner tube. The telescopic rod includes an outer rod and an inner rod. The outer rod is rotatably connected to the push-pull ring. The inner rod is square and one end of the inner rod is slidably connected to the outer rod. The other end of the inner rod is fixedly connected to the cover plate. The first gear is fixedly connected to the outer rod.

3. The aquatic organism sampling device according to claim 2, characterized in that: The abutment block is cam-shaped, and the connection point between the inner tube and the abutment block is at the small diameter end of the abutment block.

4. The aquatic organism sampling device according to claim 3, characterized in that: There are three sampling bottles, which are arranged in a triangular shape. The bottom plate and the top plate are both Reuleaux triangles.

5. The aquatic organism sampling device according to claim 4, characterized in that: There is also an outer shell between the bottom plate and the top plate. The outer shell is also in the shape of a Reuleaux triangle, and the external pressure sensor is located on the outer shell.

6. The aquatic organism sampling device according to claim 5, characterized in that: The outer tube and L-shaped rod have a flow channel connecting the sampling bottle, and the flow channel is blocked.

7. The aquatic organism sampling device according to claim 6, characterized in that: The lower surface of the base plate is provided with an annular cavity, and gears No. 1 and No. 2 are located inside the annular cavity.

8. The aquatic organism sampling device according to claim 7, characterized in that: The cleaning strip is made of rubber or nylon.

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