A lake plankton sample collection device

Abstract

The present invention relates to a lake plankton sample collection device in the technical field of lake plankton sample collection, comprising: a mounting bracket, a telescopic device arranged on the top of the mounting bracket, a receiving frame arranged at the output end of the telescopic device, and a bearing plate connected to the bottom of the receiving frame, wherein a bidirectional telescopic device is arranged in the bearing plate, and both output ends of the bidirectional telescopic device are connected to a connecting frame, and a collecting component for collecting plankton is connected to the bottom of the connecting frame. The present invention is provided with a collecting component, because the folding cylinder is in a folded state, when the collecting device enters the lake, the impact on the water surface is small during the process of its entry, and the water flow will not be caused to move significantly, and the two groups of mounting plates are close to each other, so that the mounting plates move laterally in the lake, so that the water flow can enter the folding cylinder laterally from the water inlet, so that the water flow and plankton at the water inlet are "sucked" into the folding cylinder, thereby improving the collection efficiency and collection quality.

Description

Technical Field

[0001] The invention relates to the technical field of lake plankton sample collection, in particular to a lake plankton sample collection device. Background Art

[0002] Plankton refers to drifting organisms that live in the water but lack the ability to move effectively. They are divided into phytoplankton and zooplankton. Some plankton have the ability to swim, but their swimming speed is often slower than the speed of the ocean current in which they are located, so they cannot swim flexibly in the water effectively. At present, when studying and managing lakes, it is necessary to collect lake plankton for research.

[0003] Most traditional lake plankton sample collection devices are fixed at a designated position in the lake so that the plankton can be collected by flowing with the water into the collection device. Some are installed on a tool that can be moved in the lake so that the tool can move with the tool that can be moved in the lake to collect samples. However, the former has poor collection efficiency and cannot collect phytoplankton at the corresponding position. The latter causes the water flow around the plankton to move significantly when the collection device moves in the lake for collection, resulting in the phytoplankton having left the initial position before the collection device reaches the vicinity of the phytoplankton, making the collection work more troublesome and time-consuming. Summary of the invention

[0004] The object of the present invention is to provide a lake plankton sample collection device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a lake plankton sample collection device, comprising:

[0006] A mounting bracket, a telescopic device arranged on the top of the mounting bracket, a receiving frame arranged at the output end of the telescopic device, and a bearing plate connected to the bottom of the receiving frame, wherein a bidirectional telescopic device is arranged in the bearing plate, and both output ends of the bidirectional telescopic device are connected to the connecting frame, characterized in that:

[0007] The bottom of the connecting frame is connected to a collecting component for collecting plankton.

[0008] Among them, the collection component includes a mounting plate connected to the connecting frame, the mounting plate has a water inlet, the outer side of the mounting plate is provided with a folding cylinder connected to the water inlet, and one side of the mounting plate is also provided with a guide component. During collection, the telescopic device enables the two groups of the mounting plates to enter the lake and be placed on both sides of the plankton to be collected. When the mounting plates enter the lake, the folding cylinder is in a folded state. During collection, the two-way telescopic device enables the two groups of mounting plates to approach each other, and the water flows into the folding cylinder laterally from the water inlet, so that the folding cylinder expands outward according to the guidance of the guide component, and then the water flow at the water inlet and the plankton enter the expanded folding cylinder until the two groups of the mounting plates fit each other, that is, the plankton is collected and placed in the folding cylinder to complete the collection operation.

[0009] Furthermore, the folding cylinder is in a hollow cylindrical shape when unfolded, and a connecting plate for closing it is provided at the outer end of the folding cylinder. A plurality of groups of flow discharge holes connected to the folding cylinder are provided in a circular array on the connecting plate, and an air supply and flow discharge assembly for closing the flow discharge holes is provided on the outer side of the connecting plate.

[0010] Furthermore, the guide component comprises:

[0011] A guide frame in the shape of a rectangular frame arranged on the top surface of the connecting plate;

[0012] A limit block slidably arranged at one end inside the guide frame;

[0013] and a guide rod movably inserted at one end of the limit block;

[0014] The limit block adopts sliding connection between the sliders on the outer walls on both sides and the vertical sliding grooves opened on the inner walls on both sides of the guide frame. The other end of the guide rod is connected to the outer side of the mounting plate. The top surface of the limit block is connected to the top inner wall of the guide frame through an elastic member 1.

[0015] Furthermore, the air supply and unloading assembly includes a baffle plate attached to the outer side of the connecting plate for sealing the unloading hole. The baffle plate is sleeved on the outer wall of the shaft body through a convex portion integrally formed on the top. The shaft body is rotatably set on the connecting plate, and a gear coaxially connected to the convex portion is set on one side of the convex portion.

[0016] Furthermore, a sealing cavity is provided in the mounting plate, and a corresponding plug body is movably provided in the sealing cavity. The bottom of the plug body is connected to the inner wall of the bottom of the sealing cavity through elastic member 2, and a piston rod passing through the top of the mounting plate is provided on the top of the plug body. The top of the piston rod is connected to a rack meshing with the gear through a linkage rod.

[0017] Furthermore, a cavity connected to the sealed cavity is provided in the mounting plate and on one side of the sealed cavity, an air supply device is provided on one side of the top of the supporting plate, and the air supply device is connected to the top of the sealed cavity through an air inlet pipe, and an air release valve is provided in the air inlet pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The present invention is provided with a collection component. When entering a lake, the folding cylinder is in a folded state. When the collection device enters the lake, the contact area between the folding cylinder and the water surface is small, so that the impact on the water surface during the entry process is small, and the water flow will not be caused to move significantly. At the same time, when it enters the lake vertically, the folding cylinder is in a folded state, and there is no space for the water flow to enter, so that the water flow will not enter the folding cylinder after entering the water inlet, and the folding cylinder will not be expanded by the entering water, so that the phytoplankton to be collected is stably located between the two groups of mounting plates. Subsequently, the two groups of mounting plates are driven close to each other by a bidirectional telescopic device, so that the mounting plates move laterally in the lake, so that the water flow can enter the folding cylinder laterally from the water inlet, expand the folding cylinder, and the water flow and plankton at the water inlet are "sucked" into the folding cylinder until the two groups of mounting plates are attached to each other, that is, the collection operation of the plankton is completed, so that the phytoplankton will not change position due to the significant impact of the water flow, thereby improving the collection efficiency and collection quality;

[0020] (2) The present invention is provided with an air supply and flow discharge assembly. After collection, the telescopic device is driven to drive the receiving frame to move the bearing plate upward. Because the folding cylinder contains water flow, when it moves upward, the gravity of the water flow causes the outer end of the folding cylinder to tilt downward, that is, the elastic member is squeezed. At this time, the air supply device is turned on, and the air supply device injects air into the air inlet pipe, so that the gas enters the sealing cavity, and then the plug body moves downward in the sealing cavity, so that the piston rod drives the linkage rod to move the rack, and the rack drives the gear to rotate the baffle to no longer block the flow discharge hole, so that the water in the folding cylinder is quickly discharged from the inclined end, so that only plankton remains in the folding cylinder, which is convenient for the user to extract the collected plankton later. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a lake plankton sample collection device of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a collection component in a lake plankton sample collection device of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a guide component in a lake plankton sample collection device of the present invention;

[0024] Figure 4 The present invention is a cross-sectional view of a mounting plate structure in a lake plankton sample collection device.

[0025] In the figure: 1. mounting bracket; 2. receiving frame; 3. bearing plate; 4. two-way telescopic device; 5. connecting frame; 6. collecting assembly; 61. mounting plate; 62. folding cylinder; 63. connecting plate; 64. guide component; 641. guide frame; 642. limit block; 643. elastic member 1; 65. unloading hole; 7. air supply unloading assembly; 71. air supply device; 72. linkage rod; 73. rack; 74. gear; 75. baffle; 76. sealing chamber; 77. piston rod; 78. elastic member 2; 79. cavity; 710. air intake pipe.

[0026] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of 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.

[0028] Example 1

[0029] See also Figure 1 A lake plankton sample collection device includes a mounting bracket 1 that serves as a support and mounting structure, a telescopic device that drives a receiving frame 2 to move up and down is arranged on the top of the mounting bracket 1, the receiving frame 2 is arranged on the top of a bearing plate 3, a bidirectional telescopic device 4 is arranged in the middle of the inner cavity of the bearing plate 3 to drive two groups of connecting frames 5 to move closer to or away from each other, and a collecting component 6 is connected to the bottom of the connecting frame 5;

[0030] The mounting bracket 1 is preferably L-shaped, and has mounting holes on its surface, so that it can be conveniently fixed to a tool moving on the lake by external bolt components, and the tool can be a boat. The telescopic device is an electro-hydraulic push cylinder, a hydraulic cylinder or a cylinder, and any one of them can be used. The bearing plate 3 is a rectangular frame-shaped bearing plate 3, and one end of the connecting frame 5 is placed in the inner cavity of the bearing plate 3 and driven by a bidirectional telescopic device 4 in the middle of the inner cavity of the bearing plate 3, and the bidirectional telescopic device 4 is a bidirectional cylinder.

[0031] like Figure 2As shown, the collection assembly 6 includes a mounting plate 61, a folding cylinder 62 is fixedly inserted on the outer side of the mounting plate 61, a connecting plate 63 is arranged on the outer side of the folding cylinder 62, a water inlet connected to one end of the folding cylinder 62 is opened on the mounting plate 61, and water flow enters, and a guide component 64 is arranged on one side of the mounting plate 61 to guide the folding cylinder 62 when it is extended and retracted;

[0032] The lower end of the mounting plate 61 is pointed, which facilitates better entry into the water surface and reduces the impact on the water flow when entering the water surface, so as to prevent the plankton between the two sets of collection components 6 from being disturbed by the movement of the water flow. Figure 1-2 As shown, the folding cylinder 62 is in a folded state. When it enters the lake, it is also in a folded state. When the folding cylinder 62 is unfolded, it is a hollow cylinder. Both ends are hollow. One end is connected to the water inlet, and the other end is closed by a connecting plate 63. The folding cylinder 62 can be folded and unfolded. It is made of high-quality Oxford cloth with PVC waterproof coating. The connecting plate 63 is disc-shaped, and its diameter is larger than the diameter of the folding cylinder 62;

[0033] It should be noted that, when entering the lake, because the folding cylinder 62 is in a folded state, when the collection device enters the lake, because its contact area with the water surface is small, the impact on the water surface during its entry is small, and the water flow will not be caused to move significantly. At the same time, when it enters the lake vertically, the folding cylinder 62 is in a folded state, and there is no space for water flow to enter, so that the water flow will not enter the folding cylinder 62 after entering the water inlet, and then the folding cylinder 62 will not be expanded by the entering water. When the two groups of mounting plates 61 are placed between the plankton to be collected, the two groups of mounting plates 61 are driven to approach each other through the two-way telescopic device 4, so that the mounting plates 61 move laterally in the lake, so that the water flow can enter the folding cylinder 62 laterally from the water inlet, and expand the folding cylinder 62. The expansion of the folding cylinder 62 causes the water flow and plankton at the water inlet to be "sucked" into the folding cylinder 62 until the two groups of mounting plates 61 fit each other, that is, the collection of plankton is completed;

[0034] Furthermore, if Figure 3 As shown, the guide component 64 includes a guide frame 641 arranged on the top surface of the connecting plate 63, and the guide frame 641 is in the shape of a rectangular frame. One end of a limit block 642 is slidably arranged in the guide frame 641, and one side of the limit block 642 is connected to the inner wall of the end of the guide frame 641 through an elastic member 643. A guide rod is movably inserted at one end of the limit block 642 close to the mounting plate 61, and the other end of the guide rod is connected to the outer side of the mounting plate 61.

[0035] The two sides of the limit block 642 are provided with slide blocks that are slidably connected with the vertical slide grooves provided on the two side walls of the guide frame 641. The elastic member 643 is preferably a spring. Figure 3It can be seen that one end of the elastic member 643 is connected to the top of the limit block 642, and the other end is connected to the inner wall of the top of the guide frame 641. The guide rod adopts a T-shaped guide rod, and a T-shaped movable hole that cooperates with the T-shaped guide rod is opened on one side of the limit block 642. When the folding cylinder 62 is unfolded, the connecting plate 63 moves, thereby moving the limit block 642. At this time, the T-shaped guide rod moves in the T-shaped movable hole to adapt to the unfolded state of the folding cylinder 62;

[0036] It should be noted that when the folding tube 62 is unfolded and water enters the inside, when it leaves the lake, under the action of the gravity of the water flow in the folding tube 62, one end of the folding tube 62 will move downward, causing one end of the folding tube 62 to be in an inclined state. At this time, the elastic member 643 is squeezed, and one end of the folding tube 62 is in an inclined state, which is convenient for the subsequent better discharge of the water in the folding tube 62, so that only plankton remains in the folding tube 62.

[0037] Example 2

[0038] like Figure 3-4 As shown, multiple groups of unloading holes 65 are evenly provided on the connecting plate 63 to discharge the water in the folding tube 62. At the same time, in order to avoid the folding tube 62 being unfolded to affect the water intake quality during collection, an air supply unloading assembly 7 is provided on the outer side of the connecting plate 63 to block the unloading holes 65 during collection.

[0039] Among them, a film can be set on one side of the connecting plate 63, and the film is preferably a hydrophilic and oleophobic film, which is water-permeable and can allow water to flow out. Considering that some plankton is small, the film is set to prevent the plankton from being discharged through the discharge hole 65. The air supply discharge assembly 7 includes a baffle 75 attached to the outer side of the connecting plate 63 for blocking the discharge hole 65. The top of the baffle 75 is integrally formed with a convex portion, and the baffle 75 is sleeved on the outer wall of the shaft body through the convex portion, so that when the shaft body rotates, it can drive the baffle 75 to rotate to achieve the closing or opening of the blocking discharge hole 65. One end of the shaft body is rotatably set on one side of the connecting plate 63, and its outer wall is sleeved with a gear 74 for meshing with the rack 73. When the rack 73 moves up and down, the gear 74 drives the shaft body to rotate;

[0040] Furthermore, a cylindrical sealing cavity 76 is provided in the mounting plate 61, and a matching plug body is movably provided in the sealing cavity 76. The plug body is driven by a piston rod 77 to move up and down in the sealing cavity 76. The bottom of the plug body is connected to the inner wall of the bottom of the sealing cavity 76 through an elastic member 78. The top of the piston rod 77 is connected to the rack 73 by a linkage rod 72. When the plug body moves up and down in the sealing cavity 76, it drives the piston rod 77 so that the linkage rod 72 drives the rack 73 to move.

[0041] It should be noted that, because there is still gas in the sealed cavity 76 below the plug body, when the gas enters the sealed cavity 76 from above the plug body, the plug body presses the air in the sealed cavity 76 downward into the cavity 79. The cavity 79 is opened in the mounting plate 61 and is located at one side of the sealed cavity 76. The cavity 79 is connected to the sealed cavity 76 through a channel. The plug body moves up and down in the sealed cavity 76 to press the air in the sealed cavity 76 into the cavity 79 or to extract the air in the cavity 79.

[0042] Furthermore, an air supply device 71 is provided on one side of the top of the carrier plate 3, and the air supply device 71 is connected to the top of the sealed cavity 76 through the air inlet pipe 710. The air supply device 71 injects air into the air inlet pipe 710, so that the gas enters the sealed cavity 76, thereby causing the plug body to move downward in the sealed cavity 76;

[0043] The air supply device 71 can be a blower device widely used in the art. An air release valve is arranged in the air inlet pipe 710. By opening the air release valve, the air above the plug body in the sealing cavity 76 can be discharged, thereby resetting the plug body upward.

[0044] To summarize, the mounting bracket 1 is fixed on an external tool that can be moved on the lake, and the collecting device is driven to move to the designated collecting position by the tool that can be moved on the lake. The receiving frame 2 is driven by the telescopic device to move the carrying plate 3 downward, so that the two groups of mounting plates 61 enter the water surface, and the plankton to be collected is placed between the two groups of mounting plates 61. During collection, the two groups of connecting frames 5 are driven by the two-way telescopic device 4 to move the two groups of mounting plates 61 relative to each other. When the mounting plate 61 moves in the lake, the water flows horizontally into the folded folding cylinder 62, pushing the folding cylinder 62 to expand outward. As the folding cylinder 62 expands outward, the water inlet space inside it increases, generating a "suction" force. As the mounting plates 61 gradually approach each other, the plankton to be collected enters the folding cylinder 6 2, until the two sets of mounting plates 61 are fitted together and then the two-way telescopic device 4 is closed, the collection of plankton is completed, the telescopic device is driven to drive the receiving frame 2 to move the bearing plate 3 upward, because the folding cylinder 62 contains water flow, when it moves upward, the outer end of the folding cylinder 62 is tilted downward due to the gravity of the water flow, that is, the elastic member 643 is squeezed, at this time, the air supply device 71 is opened, the air supply device 71 injects air into the air inlet pipe 710, so that the gas enters the sealing cavity 76, and then the plug body moves downward in the sealing cavity 76, so that the piston rod 77 drives the linkage rod 72 to move the rack 73, and the rack 73 drives the gear 74 to rotate the baffle 75 to no longer block the unloading hole 65, so that the water in the folding cylinder 62 is discharged from the inclined end, and then only plankton remains in the folding cylinder 62.

[0045] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lake plankton sample collection device, comprising: A mounting bracket (1), a telescopic device arranged on the top of the mounting bracket (1), a receiving frame (2) arranged at the output end of the telescopic device, and a bearing plate (3) connected to the bottom of the receiving frame (2), wherein a bidirectional telescopic device (4) is arranged inside the bearing plate (3), and both output ends of the bidirectional telescopic device (4) are connected to a connecting frame (5), characterized in that: The bottom of the connecting frame (5) is connected to a collecting component (6) for collecting plankton; The collecting assembly (6) comprises a mounting plate (61) connected to a connecting frame (5), the mounting plate (61) being provided with a water inlet, a folding cylinder (62) connected to the water inlet being arranged on the outer side of the mounting plate (61), and a guide component (64) being arranged on one side of the mounting plate (61). During collecting, the telescopic device enables two groups of the mounting plates (61) to enter the lake and be placed on both sides of the plankton to be collected. When the mounting plates (61) enter the lake, the folding cylinder (62) is in a folded state. During collecting, the bidirectional telescopic device (4) enables the two groups of mounting plates (61) to approach each other, and water flows transversely into the folding cylinder (62) from the water inlet, so that the folding cylinder (62) is expanded outward according to the guidance of the guide component (64), and then the water flow at the water inlet and the plankton enter the expanded folding cylinder (62) until the two groups of the mounting plates (61) are attached to each other, that is, the plankton is collected and placed in the folding cylinder (62) to complete the collecting operation.

2. A lake plankton sample collection device according to claim 1, characterized in that: The folding cylinder (62) is in a hollow cylindrical shape when unfolded. A connecting plate (63) is provided at the outer end of the folding cylinder (62) to seal it. A plurality of groups of discharge holes (65) connected to the folding cylinder (62) are provided in an annular array on the connecting plate (63). An air supply discharge assembly (7) to seal the discharge holes (65) is provided on the outer side of the connecting plate (63).

3. A lake plankton sample collection device according to claim 2, characterized in that: The guide component (64) comprises: A guide frame (641) in the shape of a rectangular frame and arranged on the top surface of the connecting plate (63); A limit block (642) slidably disposed at one end inside the guide frame (641); and a guide rod movably inserted at one end of the limit block (642); The limit block (642) is slidably connected by sliding blocks on the outer walls on both sides and vertical sliding grooves provided on the inner walls on both sides of the guide frame (641); the other end of the guide rod is connected to the outer side of the mounting plate (61); and the top surface of the limit block (642) is connected to the top inner wall of the guide frame (641) via an elastic member 1 (643).

4. A lake plankton sample collection device according to claim 2, characterized in that: The air supply and discharge assembly (7) comprises a baffle (75) attached to the outside of the connecting plate (63) for sealing the discharge hole (65); the baffle (75) is sleeved on the outer wall of the shaft body through a convex portion integrally formed on the top; the shaft body is rotatably arranged on the connecting plate (63); and a gear (74) coaxially connected to the convex portion is arranged on one side of the convex portion.

5. A lake plankton sample collection device according to claim 4, characterized in that: A sealing cavity (76) is arranged in the mounting plate (61), and a matching plug body is movably arranged in the sealing cavity (76). The bottom of the plug body is connected to the inner wall of the bottom of the sealing cavity (76) through a second elastic member (78). A piston rod (77) is arranged on the top of the plug body and passes through the top of the mounting plate (61). The top of the piston rod (77) is connected to a rack (73) meshing with a gear (74) through a linkage rod (72).

6. A lake plankton sample collection device according to claim 5, characterized in that: A cavity (79) in communication with the sealed cavity (76) is provided in the mounting plate (61) and on one side of the sealed cavity (76); an air supply device (71) is provided on one side of the top of the support plate (3); the air supply device (71) is in communication with the top of the sealed cavity (76) via an air inlet pipe (710); and an air release valve is provided in the air inlet pipe (710).

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