Aquatic organism sampling device

Abstract

The invention relates to the field of aquatic organism sampling, in particular to an aquatic organism sampling device which comprises a bottom plate, a top plate and a sampling mechanism, and the sampling mechanism comprises a sampling bottle, an opening and closing full load unit and a closed sampling assisting unit; the opening and closing full-load unit comprises an air cylinder, a telescopic pipe, a pressure shielding plate and a shielding plate which are connected in sequence; the closed harvesting assisting unit comprises a telescopic rod and an impurity removing part, one end of the telescopic rod is connected with the covering plate, the other end of the telescopic rod is fixedly connected with a first gear, a motor is arranged in the bottom plate and connected with a second gear, the first gear can be meshed with the second gear, a harvesting assisting groove is formed in the lower surface of the covering plate, and the impurity removing part is located in the harvesting assisting groove; an inner pressure sensor is arranged at the bottom of the sampling bottle, an outer pressure sensor is arranged outside the sampling bottle, and the inner pressure sensor and the outer pressure sensor are electrically connected with the motor and the cylinders through a controller respectively. By adopting the technical scheme, sampling of different water layer depths is facilitated, and the accuracy of subsequent detection of aquatic organisms is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aquatic organism sampling, in particular to an aquatic organism sampling device. BACKGROUND

[0002] In the process of collecting aquatic organisms, such as collecting aquatic plants, aquatic organisms are collected indirectly through collecting water samples. The current sampling device generally includes a sampling bottle and a cover plate arranged at the feed inlet at the bottom of the sampling bottle. The cover plate is opened during the sinking process of the sampling bottle, and the aquatic organisms enter the sampling bottle with the water sample. After the collection is completed, the sampling bottle is pulled up, the cover plate blocks the feed inlet, and the sampling is completed.

[0003] However, the current sampling device has the following problems: first, it cannot realize sampling of different water layer depths; second, the cover plate may not be closed due to blockage by debris during the process of blocking the feed inlet, thereby causing the sampling bottle to mix samples of different water layer depths; 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

[0004] The present application aims to provide an aquatic organism sampling device to solve the problems of sampling of different water layer depths, failure of the cover plate to smoothly close, and failure of the sampling device to be filled with water samples.

[0005] To achieve the above-mentioned purpose, the present application 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 assistance unit, the sampling bottle and the bottom plate being fixedly connected and the bottom plate and the sampling bottle being provided with a communication hole; The opening and closing full load unit comprises a cylinder, an extension pipe, a pressure cover plate, a cover plate and a connecting rod, the sampling bottle is fixedly connected with the top plate through the connecting rod, the top plate is provided with a hook, the cylinder is arranged in the top plate, the extension pipe is fixedly connected with the output shaft of the cylinder, the pressure cover plate is fixedly connected with the extension pipe and can block the bottle opening of the sampling bottle, the cover plate is connected with the extension pipe and can block the communication hole, wherein the extension pipe is fixedly connected with an abutting block, the cover plate is provided with a convex hole, and the abutting block is movably arranged in the convex hole; The closing and sampling assisting unit comprises an L-shaped rod, a push-pull rod, an extension rod and a debris cleaning part, the side wall and the bottom of the sampling bottle are provided with a communication channel, one end of the L-shaped rod is fixedly connected with the extension tube, the other end of the L-shaped rod and one end of the push-pull rod are both slidably arranged in the channel and are in inclined surface cooperation, the other end of the push-pull rod is fixedly connected with a push-pull ring; the extension rod is rotatably connected with the push-pull ring, one end of the extension rod is fixedly connected with the cover plate and the cover plate can rotate with the extension rod, the other end of the extension rod is fixedly connected with a first gear, a motor is arranged in the bottom plate, the motor is connected with a second gear, and the first gear can be engaged with the second gear; the lower surface of the cover plate is provided with a sampling assisting groove in communication with the convex hole, and the debris cleaning part comprises an abutting rod and a plurality of debris cleaning strips arranged side by side, the middle part of the debris cleaning strip is rotatably arranged in the sampling assisting groove, and the upper end of the debris cleaning strip is connected with the abutting rod and the abutting rod can abut against the abutting block. The sampling bottle is provided with an inner pressure sensor, and the sampling bottle is provided with an outer pressure sensor, and the inner pressure sensor and the outer pressure sensor are respectively electrically connected with the motor and the cylinders through the controller.

[0006] The beneficial effects of the scheme are: when sampling, the rope is bound with the hook, and then the sampling device is put into the water, in the sinking process of the sampling device, the water pressure is detected by the outer pressure sensor, which is proportional to the water depth, and is converted into the water depth value, and when the controller reaches the preset value, the controller controls one of the cylinders to start, and the extension tube drives the pressure cover and the cover plate to move to unblock the sampling bottle mouth and the through hole, and the aquatic organisms enter the sampling bottle with the water sample, and when the inner pressure sensor detects that the pressure reaches the preset value of the controller, the cylinder drives the pressure cover and the water body to exert pressure on the cover plate to make the pressure cover and the cover plate move reversely to block the sampling bottle mouth and the through hole, and in the blocking process, the sampling bottle between the pressure cover and the cover plate is full of water sample, thereby reducing the fluidity in the water sample transfer process, and further facilitating to improve the accuracy of subsequent detection of aquatic organisms; when the sampling device sinks to different sampling depths, the controller controls the cylinders to start to complete sampling of different water layer depths.

[0007] After sampling at the corresponding depth, when the bottle bottom of the sampling bottle is blocked by debris during the process of blocking the sampling bottle mouth and the through hole by the pressure cover and the cover plate, the inner pressure sensor detects that the pressure does not reach the preset value of the controller, and the cylinder drives the extension tube to continue to move a distance, and in this process, the extension tube contracts; the extension tube continues to move to drive the L-shaped rod to move, thereby driving the push-pull rod and the push-pull ring to move, and further driving the extension rod, the cover plate and the first gear to move, so that the first gear is engaged with the second gear; at the same time, the movement of the cover plate drives the debris cleaning part to move, and after the abutting rod abuts against the abutting block, the debris cleaning strip rotates and exposes the sampling assisting groove.

[0008] The first gear meshes with the second gear, and the controller controls the motor to start driving the second gear to rotate, thereby driving the first gear, the telescopic rod and the cover plate to rotate. In the process of rotating the cover plate, the debris cleaning strip sweeps the debris on the bottom of the sampling bottle. After cleaning, the motor is turned off, and the cylinder and the corresponding parts are reset. The cylinder drives the cover plate and the cover plate through the telescopic pipe to block the bottle opening and the through hole of the sampling bottle until the internal pressure sensor detects that the pressure meets the standard.

[0009] In the process of rotating the cover plate, the groove wall of the sampling assisting groove drives the water body to flow in the direction of the through hole. The water body converges into the sampling bottle, forming a suction flow. This non-natural flow suction effect is conducive to sucking the water body and aquatic organisms into the sampling bottle, especially in the case where the sampling is affected by the inability to close once due to debris blocking, highlighting the role of the sampling assisting groove.

[0010] Further, the telescopic pipe includes an outer pipe and an inner pipe frictionally and slidingly connected with the outer pipe. The outer pipe is fixedly connected with the output shaft of the cylinder, and the cover plate is fixedly connected with the outer pipe. The abutting block is fixedly connected with the inner pipe. The telescopic rod includes an outer rod and an inner rod. The outer rod is rotationally connected with the push-pull ring. The inner rod is square-shaped, and one end of the inner rod is slidingly connected with the outer rod. The other end of the inner rod is fixedly connected with the cover plate. The first gear is fixedly connected with the outer rod.

[0011] Further, the abutting block is cam-shaped, and the connection position of the inner pipe and the abutting block is the small-diameter end of the abutting block.

[0012] Further, the number of sampling bottles is three, and the three sampling bottles are distributed in a triangular shape. The bottom plate and the top plate are both in the shape of a Klee triangle.

[0013] Further, a shell is further arranged between the bottom plate and the top plate. The shell is also in the shape of a Klee triangle, and the outer pressure sensor is arranged on the shell.

[0014] Further, the outer pipe and the L-shaped rod are provided with flow channels communicating with the sampling bottles, and the flow channels are provided with plugs.

[0015] Further, the lower surface of the bottom plate is provided with an annular cavity, and the first gear and the second gear are located in the annular cavity.

[0016] Further, the debris cleaning strip is a rubber strip or a nylon strip. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a three-dimensional view of the present application; Figure 2 is a three-dimensional view of the present application omitting the shell; Figure 3 is a sectional view of the present application; Figure 4 is a sectional view of the present application omitting the hook; 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 groove 19, abutment rod 20, and cleaning strip 21. Detailed Implementation

[0019] Example The basic implementation examples are as follows: Figures 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 closing and sampling assisting unit comprises an L-shaped rod 11, a push-pull rod 12, an extension rod and a debris removing part, the side wall and the bottom of the sampling bottle 3 are provided with a communicating channel, one end of the L-shaped rod 11 is welded with the outer tube 8, the other end of the L-shaped rod 11 and one end of the push-pull rod 12 are both slidingly arranged in the channel and are in inclined surface cooperation, the other end of the push-pull rod 12 is welded with a push-pull ring 13 which is located in the through hole; the extension rod comprises an outer rod 14 and an inner rod 15, the outer rod 14 is rotatably connected with the push-pull ring 13 through a bearing, the inner rod 15 is square-shaped and the lower end of the inner rod 15 is slidingly connected with the outer rod 14, the upper end of the inner rod 15 is welded with the cover plate 6, the outer rod 14 is fixedly connected with a first gear 16 in interference fit, a motor is installed in the bottom plate 1, the motor is connected with a second gear 17, the first gear 16 can be engaged with the second gear 17, the initial position of the motor is as shown in Figure 4 , the motor is turned by an integer number of turns to restore the initial position; the lower surface of the bottom plate 1 is provided with an annular cavity, the first gear 16 and the second gear 17 are located in the annular cavity; wherein the motor and the cylinders are waterproofed, and sealing rings are arranged at the output shafts or the wires for sealing treatment.

[0022] As shown in Figure 3 , 4 , the outer tube 8 and the L-shaped rod 11 are provided with a flow channel 18 which communicates with the sampling bottle 3, a plug is arranged at the flow channel 18, and the water sample can be poured out after the plug is opened after sampling; when the outer shell 4 is arranged between the bottom plate 1 and the top plate 2, the flow channel 18 is connected with a curved hose to the outer shell 4, and the plug is arranged at the hole of the outer shell 4.

[0023] As shown in Figure 5 , the lower surface of the cover plate 6 is provided with a sampling assisting groove 19 which communicates with the convex hole, the debris removing part comprises an abutting rod 20 and a plurality of debris removing strips 21 which are densely arranged side by side, an auxiliary strip is welded in the sampling assisting groove 19, the middle part of the debris removing strip 21 is rotatably connected with the auxiliary strip through a pin, the upper end of the debris removing strip 21 is rotatably connected with the abutting rod 20, the abutting rod 20 can abut against the abutting block 10 to make the inclined debris removing strip 21 rotate, the lower end of the debris removing strip 21 is exposed from the sampling assisting groove 19, and the debris removing strip 21 is made of rubber or nylon strip or the like. Among them Figure 3 , 4 The difference between the sampling bottles 3 on the left and right sides lies in that the right side first gear 16 and the second gear 17 are not in contact, the abutting rod 20 is not in abutment with the abutting block 10, and the debris removing strip 21 is inclined in the sampling assisting groove 19. In addition, return springs are arranged between the push-pull rod 12 and the sampling bottle 3 and between the abutting rod 20 and the cover plate 6, and the sampling bottle 3 and the cover plate 6 can be manufactured in a split-welding manner.

[0024] The bottom of the sampling bottle 3 is provided with an internal pressure sensor, when the bottom plate 1 and the top plate 2 are not provided with the outer shell 4, the sampling bottle 3 is externally provided with an external pressure sensor, when the bottom plate 1 and the top plate 2 are provided with the outer shell 4, the external pressure sensor is arranged on the outer shell 4, the internal pressure sensor and the external pressure sensor are respectively electrically connected with the motor and the cylinders through the controller; the external pressure sensor can utilize the physical law that the water pressure is proportional to the water depth (fresh water: 1 meter water depth is equal to about 0.098 bar pressure; sea water: 1 meter water depth is equal to about 0.103 bar pressure) according to 1 meter water depth is equal to 0.1 bar pressure, the water body pressure is detected through the external pressure sensor, and the water depth value is converted.

[0025] The above is only the embodiment of the present application, and the specific technical solutions and / or common knowledge of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific embodiments in the specification can be used to explain the content of the claims.

Claims

1. An aquatic organism sampling device, characterized by: The sampling device comprises a bottom plate, a top plate, a controller and a plurality of sampling mechanisms distributed between the bottom plate and the top plate, each of the sampling mechanisms comprises a sampling bottle, an opening and closing full load unit and a closing aid unit, the sampling bottle is fixedly connected with the bottom plate and the bottom plate and the sampling bottle are provided with a communication hole; The opening and closing full load unit comprises a cylinder, an extension pipe, a pressure blocking plate, a cover plate and a connecting rod, the sampling bottle is fixedly connected with the top plate through the connecting rod, the top plate is provided with a hook, the cylinder is arranged in the top plate, the extension pipe is fixedly connected with an output shaft of the cylinder, the pressure blocking plate is fixedly connected with the extension pipe and the pressure blocking plate can block the bottle opening of the sampling bottle, the cover plate is connected with the extension pipe and the cover plate can block the communication hole, wherein the extension pipe is fixedly connected with an abutting block, the cover plate is provided with a convex hole, and the abutting block is movably arranged in the convex hole; The closing aid unit comprises an L-shaped rod, a push-pull rod, an extension rod and a debris removal part, the side wall and the bottom of the sampling bottle are provided with a communication channel, one end of the L-shaped rod is fixedly connected with the extension pipe, the other end of the L-shaped rod and one end of the push-pull rod are both slidably arranged in the communication channel and are in inclined surface cooperation, and the other end of the push-pull rod is fixedly connected with a push-pull ring; the extension rod is rotatably connected with the push-pull ring, one end of the extension rod is fixedly connected with the cover plate and the cover plate can rotate with the extension rod, the other end of the extension rod is fixedly connected with a first gear, a motor is arranged in the bottom plate, the motor is connected with a second gear, and the first gear can be engaged with the second gear; the lower surface of the cover plate is provided with an aid collection groove in communication with the convex hole, and the debris removal part comprises an abutting rod and a plurality of debris removal strips arranged side by side, the debris removal strips are rotatably arranged in the aid collection groove, the upper ends of the debris removal strips are connected with the abutting rod, and the abutting rod can abut against the abutting block; The bottom of the sampling bottle is provided with an inner pressure sensor, and the sampling bottle is provided with an outer pressure sensor outside, and the inner pressure sensor and the outer pressure sensor are respectively electrically connected with the motor and the cylinders through the controller.

2. An aquatic organism sampling device according to claim 1, wherein: The extension pipe comprises an outer pipe and an inner pipe in frictional and sliding connection with the outer pipe, the outer pipe is fixedly connected with the output shaft of the cylinder, the pressure blocking plate is fixedly connected with the outer pipe, and the cover plate is connected with the inner pipe, wherein the abutting block is fixedly connected with the inner pipe; the extension rod comprises an outer rod and an inner rod, the outer rod is rotatably connected with the push-pull ring, the inner rod is square-shaped, one end of the inner rod is slidably connected with the outer rod, the other end of the inner rod is fixedly connected with the cover plate, and the first gear is fixedly connected with the outer rod.

3. An aquatic organism sampling device according to claim 2, wherein: The abutting block is in the shape of a cam, and the connection position of the inner pipe and the abutting block is the small-diameter end of the abutting block.

4. An aquatic organism sampling device according to claim 3, wherein: The number of the sampling bottles is three, and the three sampling bottles are distributed in the shape of a triangle, and the bottom plate and the top plate are both in the shape of a Lohé triangle.

5. An aquatic organism sampling device according to claim 4, wherein: A shell is further arranged between the bottom plate and the top plate, and the shell is also in the shape of a Lohé triangle, and the outer pressure sensor is arranged on the shell.

6. An aquatic organism sampling device according to claim 5, wherein: The outer pipe and the L-shaped rod are provided with flow channels in communication with the sampling bottles, and the flow channels are provided with plugs.

7. An aquatic organism sampling device according to claim 6, wherein: The lower surface of the bottom plate is provided with an annular cavity, and the first gear and the second gear are located in the annular cavity.

8. An aquatic organism sampling device according to claim 7, wherein: The debris removal strips are rubber strips or nylon strips.

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