Planktonic animal and plant collecting device for water ecology monitoring

Abstract

The invention relates to a planktonic animal and plant collecting device for water ecology monitoring, which comprises a vertically arranged fixing frame, a collecting box fixedly connected to the lower end of the fixing frame and two blocking plates, the collecting box is horizontally arranged and is of an opening structure with two through ends, and the two blocking plates are respectively located at the two ends of the collecting box. One end of each plugging plate is rotationally connected to the side wall of the corresponding end of the collecting box, a driving assembly is installed on the collecting box, and the driving end of the driving assembly is in transmission connection with the two plugging plates at the same time so that the two plugging plates can close or open the opening of the corresponding end of the collecting box at the same time. The technical problem that in the prior art, target objects vertically distributed at different depths of a water body cannot be accurately collected by adopting a collection net for collection can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of plankton collection, and in particular to a plankton collection device for water ecological monitoring. Background Art

[0002] In water ecology, water pollution is particularly noteworthy because water involves factors such as air humidity in the surrounding area. When monitoring water ecology, aquatic organisms will be collected and tested. Most of the existing methods for collecting phytoplankton and animals use a collection net, that is, the target objects are collected by manually dragging the collection net in a reciprocating or figure-eight trajectory; this collection method cannot accurately collect the target objects vertically distributed at different depths in the water body, and the collection net will cause a large disturbance during the collection process, which will drive or even displace the location of the target object, and the collection accuracy is low. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a phytoplankton collection device for water ecological monitoring, so as to improve the technical problem that the collection method using a collection net in the prior art cannot accurately collect target objects vertically distributed at different depths in the water body.

[0004] The present invention is achieved through the following technical solutions:

[0005] A phytoplankton collection device for water ecology monitoring comprises a vertically arranged fixing frame, a collection box fixedly connected to the lower end of the fixing frame, and two sealing plates. The collection box is arranged horizontally and has a through opening structure at both ends. The two sealing plates are respectively located at the two ends of the collection box, and one end of the two sealing plates is rotatably connected to the side wall of the corresponding end of the collection box. The collection box is equipped with a driving assembly, and the driving end of the driving assembly is simultaneously transmission-connected to the two sealing plates, so that the two sealing plates can simultaneously realize the closing or opening of the corresponding end opening of the collection box.

[0006] Furthermore, at least one discharge port is provided through the lower side of the collection box, and a blocking plate for blocking the discharge port is detachably connected thereto. The collection box is also detachably connected thereto with a collection net located inside the blocking plate.

[0007] Furthermore, a discharge hole is provided at the center of the blocking plate, and a blocking cover is threadedly connected to the discharge hole.

[0008] Furthermore, the inner wall of the discharge port is fixedly connected with a plurality of hooks, and the collection net is fixedly connected with a plurality of hanging rings corresponding to each of the hooks.

[0009] Furthermore, the two blocking plates each have a blocking side that blocks the opening of the collection box and a back side that is arranged opposite to the blocking side, and the back side is used to abut against the side wall of the collection box when the two blocking plates both open the openings at the corresponding ends of the collection box.

[0010] Furthermore, sealing grooves are provided at the openings at both ends of the collection box, and the two sealing plates are fixedly connected with sealing rings adapted to the corresponding sealing grooves.

[0011] Furthermore, the driving assembly includes multiple rotating seats, two rotating shafts and a driving member installed on the collection box, and the rotating seats are evenly distributed at both ends of the collection box. The two rotating shafts are respectively fixedly connected to the two blocking plates and rotatably connected to the rotating seats at the corresponding ends. The driving end of the driving member is simultaneously transmission-connected to the two rotating shafts.

[0012] Furthermore, a cantilever is installed at the lower end of the fixing frame. The cantilever is arranged horizontally, and one end of the cantilever is fixedly connected to the fixing frame, and the other end of the cantilever is fixedly connected to the side wall of the collection box.

[0013] Furthermore, the fixing frame is equipped with a floating box, and the floating box and the collection box are respectively located on both sides of the fixing frame.

[0014] Furthermore, the fixing frame is equipped with a linear drive member, the driving end of which is vertically telescopic and transmission-connected to the buoyancy box.

[0015] The beneficial effects of the present invention are:

[0016] The phytoplankton collection device for water ecology monitoring is connected to a collection box by fixing it at the lower end of a fixed frame. The collection box has an opening structure with two ends through it, so that the collection box can be moved to a collection target point in a manner of moving horizontally along its opening direction underwater. During the horizontal movement, water samples at the depth continuously enter the collection box and are discharged from the collection box until it moves to the target point. The collected objects at the target point enter the collection box, and then, the collected objects are simultaneously sealed in the collection box under the closing action of two sealing plates, thereby achieving accurate collection of samples at the target depth and target collection point, and preventing other debris from entering the collection box. The technical problem that the method of using a collection net for collection in the prior art cannot accurately collect target objects vertically distributed at different depths in the water body can be improved.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the first - perspective structural diagram of the phytoplankton and zooplankton collection device for water ecological monitoring of the present invention, showing the state where the collection box is closed by the plugging plate;

[0019] Figure 2 This is the second - perspective structural diagram of the phytoplankton and zooplankton collection device for water ecological monitoring of the present invention, showing the state where the collection box is opened by the plugging plate;

[0020] Figure 3 This is the partial structural schematic diagram of the phytoplankton and zooplankton collection device for water ecological monitoring of the present invention;

[0021] Figure 4 For the present invention Figure 3 The enlarged view of the partial structure in;

[0022] Figure 5 This is the partial cross - sectional view of the phytoplankton and zooplankton collection device for water ecological monitoring of the present invention;

[0023] Figure 6 For the present invention Figure 5 The enlarged view of the partial structure of A in;

[0024] Figure 7 For the present invention Figure 5 The enlarged view of the partial structure of B in.

[0025] In the figure: 1. Fixed frame; 11. Cantilever; 12. Diagonal brace; 13. Connecting frame; 14. Card slot; 2. Collection box; 21. Discharge port; 22. Hook; 23. Sealing groove; 3. Plugging plate; 31. Ear plate; 4. Driving assembly; 41. Rotating seat; 42. Rotating shaft; 43. Driving member; 431. Motor; 432. Driving bevel gear; 433. Driven bevel gear; 434. Linking shaft; 435. End bevel gear; 436. Linking bevel gear; 437. Main protective cover; 438. Secondary protective cover; 439. Support seat; 5. Plugging plate; 51. Plug cover; 6. Collection net; 61. Hanging ring; 7. Sealing ring; 8. Floating box; 9. Linear driving member; 91. Lead screw; 92. Handle. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0031] See also Figures 1 to 5 The present invention provides a technical solution: a phytoplankton collection device for water ecological monitoring, comprising a vertically arranged fixing frame 1, a collection box 2 fixedly connected to the lower end of the fixing frame 1, and two blocking plates 3. The collection box 2 is horizontally arranged and has an opening structure with both ends through. The two blocking plates 3 are respectively located at the two ends of the collection box 2, and one end of the two blocking plates 3 is rotatably connected to the side wall of the corresponding end of the collection box 2. The collection box 2 is installed with a driving component 4, and the driving end of the driving component 4 is simultaneously connected to the two blocking plates 3 by transmission, so that the two blocking plates 3 can simultaneously realize the closing or opening of the corresponding end opening of the collection box 2.

[0032] During collection, first drive the two plugging plates 3 to rotate through the driving assembly 4, so that the two plugging plates 3 simultaneously open the openings at the corresponding ends of the collection box 2. Then apply a force to the fixing frame 1 to make it move downward, driving the collection box 2 to be lowered and enter a predetermined depth underwater. After that, by applying a force to the fixing frame 1, the collection box 2 in an open structure state is laterally moved along the opening direction to the collection target point. During the lateral movement, the water sample at this depth continuously enters the collection box 2 and is discharged from the collection box 2. After moving to the target point, the water sample at the target point enters the collection box 2. At this time, drive the two plugging plates 3 to rotate through the driving assembly 4, so that the two plugging plates 3 simultaneously close the openings at the corresponding ends of the collection box 2. The collected object at the target sampling point is blocked and collected in the collection box 2. Finally, apply a force to the fixing frame 1 to lift the collection box 2 out of the water surface and open the collection box 2, and then the collection can be carried out and the collection operation can be completed. Through the above collection method, accurate collection of samples at the target depth and the target collection point can be achieved, and other sundries can be prevented from entering the collection box 2, which can improve the technical problem that the existing method of using a collection net for collection cannot accurately collect the target objects vertically distributed at different depths in the water body.

[0033] Moreover, the collection box 2 with a through-opening structure at both ends can minimize the resistance suffered by the collection box 2 during the movement as much as possible, making the movement smooth. Correspondingly, the disturbance of the target object by the collection box 2 during the movement is reduced.

[0034] In the present invention, the plugging plates 3 at both ends of the collection box 2 can simultaneously close the openings at both ends of the collection box 2 under the action of the driving assembly 4, which can prevent the target object entering the collection box 2 from being discharged from the collection box 2. Compared with the large disturbance that occurs during the collection process of the collection net in the prior art, which will drive and even displace the target object, the present invention can avoid the problem of sample loss.

[0035] Among them, the fixing frame 1 is a frame structure made of aluminum alloy material for lifting and lowering the collection box 2. Obviously, during actual use, the size of the collection box 2 can be made according to needs. And a length scale (not shown in the figure) is vertically arranged on the fixing frame 1 to control the lowering depth of the collection box 2.

[0036] The collection box 2 can be a square pipeline.

[0037] On the basis of the above embodiment, a water depth induction probe is arranged around the collection box 2. The water depth induction probe is communicatively connected to a processor. When reaching the specified depth position, the water depth induction probe controls the driving assembly 4 to start or stop through the processor. And the processor is also communicatively connected to a remote controller. The remote controller can establish a wireless connection with the processor through Bluetooth, Wi-Fi or radio frequency signals of a specific frequency, so as to present the induction result of the water depth induction probe through the remote controller.

[0038] A waterproof camera is also provided at the end of the collection box 2. The waterproof camera is communicatively connected to the processor so as to directly present the depth information where the collection box 2 is located through a remote controller, facilitating the understanding of sampling personnel.

[0039] In this embodiment: Please refer to Figures 3 to 7 , at least one discharge opening 21 is formed through the lower side of the collection box 2, and a plug plate 5 for blocking the discharge opening 21 is detachably connected. The collection box 2 is also detachably connected with a collection net 6 located inside the plug plate 5.

[0040] During the collection operation, the plug plate 5 closes the discharge opening 21, and the collection net 6 is located inside the corresponding plug plate 5; after the collection is completed, when the collection box 2 is lifted out of the water surface, the plug plate 5 can be opened. At this time, the target objects in the collection box 2 are filtered from the discharge opening 21, the water body is separated from the sample and filtered out from the collection net 6, while the sample remains on the collection net 6. After the process is completed, the collection net 6 is removed, and then the analysis work of the subsequent sample can be carried out.

[0041] Of course, as an alternative solution, when discharging the water body in the collection box 2, the water body can also be directly led out from the end opening of the collection box 2 by opening the plugging plate 3.

[0042] The specific quantities of the discharge opening 21, the plug plate 5 and the collection net 6 can all be one, two, three, four, etc. In the figure, only two are shown.

[0043] Among them, the plug plate 5 can be detachably installed by means of screw connection, snap connection, etc. In the figure, it is shown as screw connection.

[0044] Based on the above embodiment, the discharge opening 21 is a stepped opening structure, and the size of the lower opening is larger than that of the upper opening, so as to fit and install the plug plate 5 and ensure the sealing effect between the plug plate 5 and the discharge opening 21. A sealing rubber layer (not shown in the figure) is provided on the abutting surface of the plug plate 5 and the discharge opening 21 to improve the sealing effect and prevent the water body in the collection box 2 from leaking.

[0045] Based on the above embodiment, there is a gap between the horizontal planes where the installation points of the collection net 6 are located and the horizontal plane where the plug plate 5 is located. After installation, under the flexible action of the collection net 6, it collapses downward onto the plug plate 5, reducing the possibility of the collection net 6 entering the collection box 2 upward.

[0046] In this embodiment: Please refer to Figure 5 and Figure 7 , a discharge hole is formed at the central position of the plug plate 5, and a plug cover 51 is threadedly connected to the discharge hole.

[0047] When filtering the target object in the collection box 2 at the discharge port 21, rotating the plug cover 51 can first separate the water body from the sample through the collection net 6, so that the water body is separated first. Then, by opening the plug plate 5, the collection net 6 can be removed to take out the filtered sample. In this way, it can be avoided that when the plug plate 5 is directly removed, the water body directly filters out from the collection box 2 at the same time, causing problems of inconvenient filtration and the water body impacting the collection net 6, which may cause the collection net 6 to be washed off into the collection box 2.

[0048] On the basis of the above embodiment, the plug cover 51 has an upward opening structure to form a space for the collection net 6 to collapse downward, further reducing the possibility that the collection net 6 enters the collection box 2 upward and affecting the possibility of organisms in the water body entering the collection box 2.

[0049] In this embodiment: Please refer to Figures 5 to 7 , a plurality of hooks 22 are fixedly connected to the inner wall of the discharge port 21, and the collection net 6 is fixedly connected with a plurality of hanging rings 61 corresponding to each hook 22 one by one.

[0050] Before collection, hanging a plurality of hanging rings 61 on the corresponding hooks 22 one by one can complete the installation of the collection net 6. Then, blocking the discharge port 21 with the plug plate 5 can store the collection net 6 on the plug plate 5 to complete the closure of the discharge port 21. After completing the separation of the water body and the sample, removing a plurality of hanging rings 61 from the corresponding hooks 22 one by one can complete the subsequent processing work of the sample on the collection net 6.

[0051] On the basis of the foregoing embodiment, there is a gap between the horizontal plane where the plurality of hanging rings 61 are located and the horizontal plane where the plug plate 5 is located. After installation, under the flexible action of the collection net 6, it collapses downward on the plug plate 5, reducing the possibility that the collection net 6 enters the collection box 2 upward.

[0052] As an alternative solution to the above embodiment, the collection net 6 can also be realized by means of clamping, riveting, plugging, etc.

[0053] In this embodiment: Please refer to Figures 1 to 3 , both of the two plugging plates 3 have a plugging side for plugging the opening of the collection box 2 and a back side opposite to the plugging side. The back side is used to abut against the side wall of the collection box 2 when both of the two plugging plates 3 open the corresponding end opening of the collection box 2.

[0054] During collection, when the collection box 2 in an open-mouth structure state moves horizontally along its opening direction to the collection target point, the back sides of both of the two plugging plates 3 always abut against the side wall of the collection box 2, so that the impact surface of the two plugging plates 3 with the water body is minimized during the horizontal movement, which can reduce the resistance of the horizontal movement and can reduce the disturbance of the water samples at other depths by the plugging plates 3 during the horizontal movement, facilitating ensuring the accurate collection work of the water samples at other depths subsequently.

[0055] As one of the specific solutions of this embodiment, when the two blocking plates 3 are opened, they both abut against the upper side of the collection box 2 .

[0056] As a second specific solution of this embodiment, when the two blocking plates 3 are opened, they both abut against the side surfaces of the collection box 2 in the horizontal direction, and abut against the same side.

[0057] In this embodiment: Please refer to Figures 4 to 7 Sealing grooves 23 are provided at both end openings of the collection box 2, and the two sealing plates 3 are fixedly connected with sealing rings 7 adapted to the corresponding sealing grooves 23.

[0058] When the two sealing plates 3 are driven to rotate by the driving assembly 4 so that the two sealing plates 3 simultaneously close the openings at the corresponding ends of the collection box 2, the two sealing rings 7 enter the corresponding sealing grooves 23 to form a seal, thereby preventing the target sample collected in the collection box 2 from leaking out and avoiding failure of the collection work.

[0059] The sealing ring 7 is fixedly connected to the blocking side of the blocking plate 3. The sealing ring 7 can be made of materials such as rubber and silicone.

[0060] The sealing plate 3 and the sealing ring 7 form a "U"-shaped opening structure. When driven by the driving assembly 4, during the rotation of the sealing plate 3, the "U"-shaped opening structure gradually opens toward the end of the collection box 2. That is, the "U"-shaped opening structure can form a space for the sampling target to enter, thereby concentrating and pushing the objects to be collected at the collection point into the collection box 2, thereby improving the collection effect.

[0061] Based on the above examples, please refer to Figure 6 The sealing groove 23 is a trumpet-shaped opening structure, and the width of the groove is greater than the width of the groove bottom to ensure that the sealing ring 7 can smoothly enter and exit the sealing groove 23 during the rotation process.

[0062] In this embodiment: Please refer to Figures 1 to 4 The driving assembly 4 includes a plurality of rotating seats 41, two rotating shafts 42 and a driving member 43 installed on the collection box 2. The rotating seats 41 are evenly distributed at both ends of the collection box 2. The two rotating shafts 42 are respectively fixedly connected to the two blocking plates 3 and are rotationally connected to the rotating seats 41 at the corresponding ends. The driving end of the driving member 43 is simultaneously transmission-connected to the two rotating shafts 42.

[0063] When the two sealing plates 3 are used to close or open the corresponding end openings of the collection box 2 at the same time through the driving component 4, the driving member 43 is started, and the driving member 43 drives the two rotating shafts 42 to rotate at the same time, so that the two sealing plates 3 rotate at the same time, thereby achieving the simultaneous closing or opening of the openings at both ends of the collection box 2.

[0064] On the basis of the above embodiments, ear plates 31 are fixedly connected to the ends of the two blocking plates 3 respectively, so as to realize the fixed connection with the corresponding rotating shafts 42 through the ear plates 31. And the ear plates 31 and the corresponding blocking plates 3 form an "L" - shaped structure to ensure that the blocking plates 3 after rotation can smoothly close the collection box 2.

[0065] In the figure, the rotating seat 41 is fixedly connected to the side wall of the collection box 2 and extends upward beyond the upper side of the collection box 2. A distance is formed between the corresponding rotating shaft 42 and the upper side of the collection box 2 to form a space for the ear plate 31 to rotate, ensuring the smooth rotation of the blocking plate 3.

[0066] The driving member 43 includes a motor 431 fixedly connected to the collection box 2, a driving bevel gear 432 coaxially fixedly connected to the output end of the motor 431 through a connecting rod, a driven bevel gear 433 meshing with the driving bevel gear 432, and a linkage shaft 434 coaxially fixedly connected to the middle of the driven bevel gear 433. At both ends of the linkage shaft 434, end bevel gears 435 are coaxially fixedly connected, and two linkage bevel gears 436 are meshed with both end bevel gears 435. The two linkage bevel gears 436 are respectively coaxially fixedly connected to one end of the two rotating shafts 42.

[0067] When driving the two rotating shafts 42 to rotate simultaneously through the driving member 43, start the motor 431 to drive the driving bevel gear 432 to rotate, so that the driven bevel gear 433 and the linkage shaft 434 rotate simultaneously, driving the two end bevel gears 435 to rotate simultaneously. Furthermore, the two linkage bevel gears 436 and the two rotating shafts 42 rotate simultaneously, realizing the rotation of the blocking plate 3 and the simultaneous closing or opening of the two openings at both ends of the collection box 2. Please refer to Figure 2 When the driving bevel gear 432 rotates counter - clockwise under the drive of the motor 431, the driven bevel gear 433, the linkage shaft 434 and the two end bevel gears 435 rotate clockwise simultaneously. Under the linkage of the two linkage bevel gears 436, the two blocking plates 3 in the closed state are opened simultaneously.

[0068] Among them, the motor 431 is communicatively connected to the processor, so as to control the opening and closing of the motor 431 through a remote control.

[0069] On the basis of the above embodiments, a main protective cover 437 covers the motor 431, the driving bevel gear 432 and the driven bevel gear 433 simultaneously, and a secondary protective cover 438 covers the paired end bevel gears 435 and the linkage bevel gears 436 simultaneously. The main protective cover 437 and the secondary protective cover 438 are both installed on the collection box 2 to play a protective role through the main protective cover 437 and the secondary protective cover 438.

[0070] A plurality of support seats 439 are also fixedly connected to the collection box 2, and the linkage shaft 434 is rotatably connected to the support seats 439, so as to form a supporting effect on the linkage shaft 434 through the support seats 439 to ensure its rotation stability.

[0071] As a parallel solution of the above embodiment, the driving assembly 4 includes two synchronous motors, and the output shafts of the two synchronous motors are coaxially fixedly connected to the two rotating shafts 42, so as to drive the two blocking plates 3 to open and close by controlling the two synchronous motors.

[0072] In this embodiment: Please refer to Figure 1 and Figure 2 A cantilever 11 is installed at the lower end of the fixed frame 1. The cantilever 11 is arranged horizontally, and one end of the cantilever 11 is fixedly connected to the fixed frame 1, and the other end of the cantilever 11 is fixedly connected to the side wall of the collection box 2.

[0073] During collection, when the collection box 2 in an open structure state moves laterally along its opening direction to the collection target point, the moving paths of the collection box 2 and the fixed frame 1 are located on different vertical planes, which can prevent the fixed frame 1 from disturbing water bodies at different depths in the vertical plane where the collection point is located during the lateral movement, so as to ensure the accuracy of subsequent sampling of water bodies at different depths.

[0074] At the same time, the cantilever 11 is fixedly connected to the side wall of the collection box 2, so as to form an installation avoidance for the aforementioned driving assembly 4.

[0075] On the basis of the above embodiment, the lower end of the fixing frame 1 is fixedly connected with an oblique support rod 12, which is arranged obliquely, and the upper end is fixedly connected to the fixing frame 1, and the lower end is fixedly connected to the middle position of the collection box 2. The oblique support rod 12 improves the installation stability of the collection box 2.

[0076] In this embodiment: Please refer to Figure 1 and Figure 2 The fixed frame 1 is equipped with a floating box 8, and the floating box 8 and the collection box 2 are respectively located on both sides of the fixed frame 1.

[0077] During the collection process, the buoyancy box 8 floats on the water surface, which can achieve force balance for the collection box 2 distributed on the other side of the fixed frame 1, ensuring the balance of the collection box 2 after the collection operation and the filling of water samples, and facilitating the sampling operation for the sampling personnel.

[0078] A force balance system is formed by the fixing frame 1 and the collection box 2. When the collection box 2 is performing the collection operation, no matter how external factors such as water flow, wind and waves interfere, the buoyancy provided by the floating box 8 can effectively offset the lateral force on the collection box 2 and the unbalanced force caused by the sampling action, ensuring that the collection box 2 always maintains a stable posture, avoiding collection errors caused by shaking, and ensuring the accuracy of the collected data.

[0079] The balanced collection box 2 is easier for the sampling personnel to operate. During the sampling process, the sampling personnel do not need to spend too much energy to control the balance of the collection box 2, and can focus more on the collection action, thereby improving the sampling efficiency. At the same time, the stable collection box 2 also reduces the difficulty of operation, reduces the risk of damage to the equipment due to improper operation, and prolongs the service life of the equipment.

[0080] Even after the collection box 2 is filled with water samples, the device as a whole can still remain stable due to the balancing effect of the float box 8. This makes the device applicable to collection tasks of different depths and different water sample volumes, and has stronger versatility and adaptability.

[0081] The buoyancy box 8 can be made of airbags. In addition, a plurality of independent compartments are arranged inside the buoyancy box 8. Even if a compartment is damaged, other compartments can still provide buoyancy to ensure the stability and safety of the whole device.

[0082] In this embodiment: Please refer to Figure 1 and Figure 2 The fixed frame 1 is installed with a linear driving member 9, and the driving end of the linear driving member 9 is vertically telescopic and transmission-connected to the buoyancy box 8.

[0083] The float 8 is driven to move in the vertical direction by the linear drive member 9, so as to change the height of the float 8 relative to the collection box 2, thereby ensuring that the collection box 2 can be smoothly lowered to different depths, and ensuring that when sampling water bodies at different depths, the float 8 can maintain balance and achieve smooth collection.

[0084] On the basis of the above embodiment, a connecting frame 13 is vertically slidably connected to the fixing frame 1, one end of the connecting frame 13 is slidably connected to the fixing frame 1, and the other end is fixedly installed with the floating box 8. The linear drive member 9 includes a vertically arranged screw rod 91 and a handle 92 with one end fixedly connected to the upper end of the screw rod 91. The screw rod 91 is rotatably connected to the fixing frame 1, and the middle end is threadedly connected to the connecting frame 13, so that the connecting frame 13 and the floating box 8 are moved in the vertical direction by applying force to the handle 92 and rotating the screw rod 91, thereby adjusting the relative position of the floating box 8 and the collection box 2.

[0085] A slot 14 is provided on the fixing frame 1, and one end of the connecting frame 13 is adapted and slidably connected to the slot 14, so as to limit the connecting frame 13 through the slot 14, ensuring that the connecting frame 13 can only move in the vertical direction. The slot 14 can be a stepped slot or a dovetail slot.

[0086] As a parallel solution, the linear drive member 9 can also be a cylinder.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A phytoplankton and zooplankton collection device for water ecological monitoring, characterized in that: The invention comprises a vertically arranged fixing frame (1), a collection box (2) fixedly connected to the lower end of the fixing frame (1), and two blocking plates (3); the collection box (2) is arranged horizontally and has an opening structure with two ends through; the two blocking plates (3) are respectively located at the two ends of the collection box (2), and one end of the two blocking plates (3) is rotatably connected to the side wall of the corresponding end of the collection box (2); the collection box (2) is installed with a driving assembly (4); the driving end of the driving assembly (4) is simultaneously transmission-connected to the two blocking plates (3), so that the two blocking plates (3) can simultaneously close or open the openings of the corresponding ends of the collection box (2).

2. The phytoplankton and zooplankton collection device for water ecological monitoring according to claim 1, wherein: At least one discharge port (21) is formed through the lower side of the collection box (2), and a blocking plate (5) is detachably connected to the discharge port (21). The collection box (2) is also detachably connected to a collection net (6) located inside the blocking plate (5).

3. The phytoplankton and zooplankton collection device for water ecological monitoring according to claim 2, wherein: A discharge hole is provided at the center of the blocking plate (5), and a blocking cover (51) is threadedly connected to the discharge hole.

4. The phytoplankton and zooplankton collection device for water ecological monitoring according to claim 2, wherein: The inner wall of the discharge port (21) is fixedly connected with a plurality of hooks (22), and the collection net (6) is fixedly connected with a plurality of hanging rings (61) corresponding one to each of the hooks (22).

5. The phytoplankton and zooplankton collection device for water ecological monitoring according to claim 1, wherein: The two blocking plates (3) each have a blocking side that blocks the opening of the collection box (2) and a back side that is arranged opposite to the blocking side, and the back side is used to abut against the side wall of the collection box (2) when the two blocking plates (3) both open the openings at the corresponding ends of the collection box (2).

6. The phytoplankton and zooplankton collection device for water ecological monitoring according to claim 1, characterized in that: Sealing grooves (23) are provided at both end openings of the collection box (2), and the two sealing plates (3) are fixedly connected with sealing rings (7) adapted to the corresponding sealing grooves (23).

7. The phytoplankton and zooplankton collection device for water ecological monitoring according to claim 1, characterized in that: The driving assembly (4) comprises a plurality of rotating seats (41), two rotating shafts (42) and a driving member (43) mounted on the collection box (2); the rotating seats (41) are evenly distributed at both ends of the collection box (2); the two rotating shafts (42) are respectively fixedly connected to the two blocking plates (3) and are rotationally connected to the rotating seats (41) at the corresponding ends; the driving end of the driving member (43) is simultaneously transmission-connected to the two rotating shafts (42).

8. The phytoplankton and zooplankton collection device for water ecological monitoring according to claim 1, wherein: A cantilever (11) is installed at the lower end of the fixing frame (1); the cantilever (11) is arranged transversely, with one end fixedly connected to the fixing frame (1) and the other end fixedly connected to the side wall of the collection box (2).

9. The phytoplankton and zooplankton collection device for water ecological monitoring according to any one of claims 1-8, characterized in that: The fixed frame (1) is equipped with a floating box (8), and the floating box (8) and the collection box (2) are respectively located on two sides of the fixed frame (1).

10. The phytoplankton and zooplankton collection device for water ecological monitoring according to claim 9, characterized in that: The fixing frame (1) is provided with a linear drive member (9), the driving end of which is telescopic in the vertical direction and is transmission-connected to the buoyancy box (8).

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