Multistage phytoplankton siphon concentration device

Abstract

The invention belongs to the technical field of aquatic biology research auxiliary equipment, and discloses a multistage phytoplankton siphon concentration device which comprises a container bottle, the top of the container bottle is communicated with a first-stage drainage pipe, and one end of the first-stage drainage pipe is communicated with a hose. Firstly, first-stage siphoning is carried out, the upper-layer waste liquid in a container bottle is discharged, a first-stage drainage pipe with the large diameter is adopted, the siphoning speed is high, along with water level decline, a conical foam plug, a first connecting rope, a round buckle, a balance weight buckle piece, a second connecting rope and a second floating ball decline at the same time, and the upper-layer waste liquid in the container bottle is discharged; when the conical foam plug completely falls into the conical closing opening of the arc-shaped sleeve, second-stage siphoning is started, second-stage siphoning is conducted, lower-layer waste liquid in the container bottle is discharged, the connecting pipe and the second-stage drainage pipe which are small in diameter are adopted, the siphoning speed is low, and influences on concentrated phytoplankton at the bottom are small.

Description

Technical Field

[0001] The invention belongs to the technical field of auxiliary equipment for aquatic biology research, and in particular is a multi-stage phytoplankton siphon concentration device. Background Art

[0002] Phytoplankton is one of the main primary producers in aquatic ecosystems, forming the foundation of food webs and maintaining ecosystem stability. It is often used as a biological indicator for aquatic ecosystem assessment. Therefore, conducting phytoplankton monitoring surveys is an important foundation for comprehensively understanding the health of water bodies and formulating water quality management and ecological protection measures.

[0003] Existing methods for concentrating phytoplankton in the wild typically use peristaltic pumping or manually controlled siphoning. Peristaltic pumping offers high pumping speeds, but the device is bulky, requires a power supply, and can easily result in significant loss of phytoplankton during concentration. Manually controlled siphons, which follow the liquid surface to draw up the supernatant, are slow, time-consuming, and require the coordinated efforts of multiple individuals, resulting in unstable experimental results.

[0004] Chinese patent CN 220671033 U discloses a liquid level following type phytoplankton concentrating device. Although the phytoplankton concentrating device can float following the liquid level of the supernatant waste liquid, the lateral pulling force of the guide tube (3) on the transition tube (2) during actual use easily causes the transition tube (2) to tilt, causing the transition tube (2) and the float (1) to contact the container mouth and the container wall respectively and generate a large friction force, making it difficult to continue to automatically descend with the liquid level. Moreover, when absorbing the waste liquid inside the container, since there is only one flow port for the waste liquid, the siphoning speed of the waste liquid cannot be adjusted in the two processes of accelerating the absorption of the waste liquid above the container or reducing the absorption of the waste liquid below the container, thereby affecting the siphoning efficiency of the waste liquid. Summary of the Invention

[0005] In order to solve the problem in the above-mentioned background technology that it is not possible to automatically descend with the liquid level and it is not possible to concentrate phytoplankton in different containers conveniently and quickly, the present invention provides a multi-stage phytoplankton siphon concentration device, which can quickly, stably and automatically absorb the supernatant waste liquid of phytoplankton samples, is suitable for different containers, will not accidentally absorb phytoplankton, frees the hands of sampling staff, and reduces the cost of phytoplankton sampling and monitoring.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage phytoplankton siphon concentration device, comprising a container bottle, the top of the container bottle being connected to a first-stage drain pipe, one end of the first-stage drain pipe being connected to a hose, the top of the container bottle near the first-stage drain pipe being connected to an air inlet plug, and further comprising;

[0007] The regulating mechanism includes a conical tube in contact with the bottom of the first-stage drainage pipe, a fixed sleeve is fixedly connected to the outer wall of the bottom end of the first-stage drainage pipe, a flexible support frame is fixedly connected to the top side of the fixed sleeve, and an regulating component is provided on the outer wall of the first-stage drainage pipe for siphoning and grading the waste liquid above the phytoplankton.

[0008] Preferably, the adjustment assembly includes a connecting pipe connected to the first-stage drain pipe near the bottom end of the fixed sleeve, the end of the connecting pipe away from the first-stage drain pipe is connected to the second-stage drain pipe, the outer wall of the end of the second-stage drain pipe away from the connecting pipe is fixedly connected to a counterweight ring frame, and one end of the outer wall of the counterweight ring frame is fixedly connected to a first float.

[0009] Preferably, a conical foam plug is provided inside the first-level drainage pipe, the bottom of the conical foam plug is fixedly connected to a first connecting rope, the bottom of the first connecting rope is fixedly connected to a round buckle, the bottom of the inner wall of the round buckle is contacted with a counterweight fastener, the bottom of the counterweight fastener is fixedly connected to a second connecting rope, and the end of the second connecting rope away from the counterweight fastener is fixedly connected to a second float.

[0010] Preferably, a disassembly assembly is provided on the outer wall of the tapered tube, and the disassembly assembly includes a fixing ring fixedly connected to the outer wall of one end of the tapered tube, and four semicircular holes are respectively opened around the top of the fixing sleeve.

[0011] Preferably, four sliding holes are respectively opened around the outer wall of the fixing sleeve, one end of the sliding hole is connected to the side wall of the semicircular hole, the top of the fixing ring is respectively fixedly connected with four semicircular rods, one end of the semicircular rod is slidably connected to the inner wall of the semicircular hole, and the inner wall of the sliding hole is slidably connected to the sliding rod.

[0012] Preferably, one end of the sliding rod is in contact with the outer wall of one end of the semicircular rod, the top outer wall of the fixing sleeve is fixedly connected with a threaded ring, and the outer wall of the threaded ring is threadedly connected with a torsion ring.

[0013] Preferably, a flexible sleeve is fixedly connected to the bottom end of the inner wall of the torsion ring, one side of the inner wall of the flexible sleeve contacts the outer wall of one end of the sliding rod, and both ends of the sliding rod are spherically arranged.

[0014] Preferably, a cleaning assembly is provided at the bottom of the fixing ring, and the cleaning assembly comprises four vertical rods fixedly connected to the bottom of the fixing ring, and the bottoms of the vertical rods are fixedly connected to a circular ring frame.

[0015] Preferably, the inner wall of the circular frame is rotatably connected to an arc-shaped fan roller, the outer wall of the bottom end of the first connecting rope is arranged at the inner wall of the arc-shaped fan roller, the top of the arc-shaped fan roller is respectively fixedly connected to four inclined rods, and the top of the inclined rod is fixedly connected to an arc sleeve.

[0016] Preferably, the outer wall of the arc sleeve contacts the inner wall of the conical tube, four cleaning strips are fixedly connected to the top of the arc sleeve, the side walls of the cleaning strips contact the inner wall of the first-level drain pipe, and the outer wall of the top end of the conical foam plug is fixedly connected to a sealing ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention realizes the graded automatic siphoning effect of the waste liquid in the upper layer of phytoplankton through the ingenious arrangement of the regulating components. First, the first-stage siphoning is performed to discharge the waste liquid in the upper layer inside the container bottle. A first-stage drain pipe with a larger diameter is used, and the siphoning speed is fast. As the water level drops, the conical foam plug, the first connecting rope, the round buckle, the counterweight fastener, the second connecting rope, and the second float drop at the same time until the conical foam plug completely falls into the conical closing end of the arc sleeve, and the second-stage siphoning begins. In the second stage of siphoning, the waste liquid in the lower layer of the container bottle is discharged. A connecting pipe with a smaller diameter and a second-stage drain pipe are used, and the siphoning speed is slow, which has less impact on the concentrated phytoplankton at the bottom.

[0019] The present invention adjusts the setting of the component, the second stage siphon, the end of the second drain pipe adopts a counterweight ring frame and the first float to cooperate with a certain counterweight, while ensuring that the second drain pipe can follow the water level and maintain a certain vertical stability, and is not easily hindered by bending tension or friction and stops following the change. Through the setting of the air inlet plug, it can be used in an emergency in case of misoperation, and the lengths of the first drain pipe and the second drain pipe can be adjusted. The device realizes multi-stage automatic siphoning, solves the problems of high manpower input and unstable operation caused by traditional manual control of the siphon pipe to follow the liquid surface to absorb the supernatant, and solves the use defects of the existing phytoplankton concentration device such as low siphon efficiency and easy occurrence of siphon following stop, improves the siphoning efficiency and siphoning quality of phytoplankton, is simple to operate, easy to carry, and has strong versatility, reducing manpower and time investment costs.

[0020] The present invention is provided with an adjusting component, a disassembling component and a cleaning component, wherein one end of the first connecting rope is passed through the bottom closing part of the arc sleeve, so that the round buckle at the bottom end of the first connecting rope is clamped with the counterweight clamp, and then the conical tube is docked with the bottom of the first-level drainage pipe, and the conical tube drives the fixing ring to move upward, and the fixing ring drives the semicircular rod to pass through the interior of the semicircular hole of the fixing sleeve, and the semicircular rod squeezes the sliding rod, and the sliding rod slides on the inner wall of the sliding hole, twisting the top inner wall of the torsion ring on the outer wall of the threaded ring, and the torsion ring drives the flexible sleeve to move vertically upward. During the upward movement of the flexible sleeve, the sliding rod will be squeezed, so that one end of the sliding rod squeezes the side wall of the semicircular rod, and the outer wall of one end of the semicircular rod is provided with multiple grooves, which can improve the extrusion stability of the sliding rod on the semicircular rod and prevent the semicircular rod from sliding down, so that the conical tube and the first-level drainage pipe can be quickly disassembled, and the device is convenient for replacement.

[0021] The present invention is provided with an adjustment component, a disassembly component, and a cleaning component, and is subject to the opening setting of the inner wall of the arc fan roller. The outer wall of one end of the first connecting rope is set at the inner wall of the arc fan roller, which can limit the lifting and lowering of the conical foam plug connected to the first connecting rope to prevent the conical foam plug from being offset during the lifting and lowering. When the upper layer of waste liquid is siphoned with a higher flow rate and absorbed into the interior of the first-level drain pipe, the flow of the waste liquid is faster, which can cause the arc fan roller to rotate slightly. The arc fan roller drives the inclined rod and the arc sleeve to rotate slightly, and the arc sleeve drives the cleaning strip to rotate slightly. During the rotation of the cleaning strip, the inner wall of the first-level drain pipe can be scraped to prevent impurities from adhering to the inner wall of the first-level drain pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic cross-sectional view of the container bottle of the present invention;

[0023] Figure 2 For the present invention Figure 1 A magnified view of middle A;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the first-stage drainage pipe of the present invention;

[0025] Figure 4 This is a schematic cross-sectional view of the counterweight fastener of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged view of middle B;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of the conical foam plug of the present invention;

[0028] Figure 7 For the present invention Figure 6 Enlarged view of middle B;

[0029] Figure 8 This is a schematic diagram of the top view of the sealing ring of the present invention;

[0030] Figure 9 This is a schematic diagram of the explosion structure of the conical foam plug of the present invention.

[0031] In the figure: 1, container bottle; 2, first-stage drainage pipe; 3, discharge pipe; 4, air inlet plug; 5, adjustment mechanism; 51, tapered pipe; 52, fixing sleeve; 53, flexible support frame; 54, adjustment assembly; 55, disassembly assembly; 56, cleaning assembly; 541, connecting pipe; 542, second-stage drainage pipe; 543, counterweight ring frame; 544, first float; 545, tapered foam plug; 546, first connecting Rope; 547, round buckle; 548, counterweight fastener; 549, second connecting rope; 540, second float; 551, fixing ring; 552, semicircular rod; 553, sliding rod; 554, threaded ring; 555, torsion ring; 556, flexible sleeve; 561, vertical rod; 562, circular ring frame; 563, arc fan roller; 564, oblique rod; 565, arc sleeve; 566, cleaning strip; 567, sealing ring. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0033] like Figures 1 to 9 As shown, the present invention provides a multi-stage phytoplankton siphon concentration device, comprising a container bottle 1, the top of the container bottle 1 is connected to a first-stage drain pipe 2, one end of the first-stage drain pipe 2 is connected to a hose 3, the top of the container bottle 1 near the first-stage drain pipe 2 is connected to an air inlet plug 4, and further comprising;

[0034] The regulating mechanism 5 includes a conical tube 51 in contact with the bottom of the first-stage drainage pipe 2, a fixed sleeve 52 is fixedly connected to the outer wall of the bottom end of the first-stage drainage pipe 2, and a flexible support frame 53 is fixedly connected to the top side of the fixed sleeve 52. The outer wall of the first-stage drainage pipe 2 is provided with an regulating component 54 for siphoning and grading the upper layer of phytoplankton waste liquid.

[0035] The adjusting assembly 54 includes a connecting pipe 541 connected to the first-stage drain pipe 2 near the bottom end of the fixed sleeve 52, the connecting pipe 541 is connected to the second-stage drain pipe 542 at one end away from the first-stage drain pipe 2, the outer wall of the second-stage drain pipe 542 at one end away from the connecting pipe 541 is fixedly connected to a counterweight ring frame 543, and one end of the outer wall of the counterweight ring frame 543 is fixedly connected to a first float 544.

[0036] Adopting the above-mentioned scheme: when the second-stage drainage pipe 542 performs the second-stage siphon, due to the setting of the flexible support frame 53, the top of the flexible support frame 53 can support the connection between the second-stage drainage pipe 542 and the connecting pipe 541. Because the top of the flexible support frame 53 is made of flexible material, it can prevent the second-stage drainage pipe 542 from bending when performing the second-stage siphon.

[0037] A conical foam plug 545 is provided inside the first-level drainage pipe 2, and the bottom of the conical foam plug 545 is fixedly connected to the first connecting rope 546, and the bottom of the first connecting rope 546 is fixedly connected to the round buckle 547. The bottom of the inner wall of the round buckle 547 is contacted with a counterweight fastener 548, and the bottom of the counterweight fastener 548 is fixedly connected to the second connecting rope 549. The end of the second connecting rope 549 away from the counterweight fastener 548 is fixedly connected to the second float 540.

[0038] The above scheme is adopted: when the first-stage siphon is performed, the waste liquid is absorbed through the connection between the conical tube 51 and the first-stage drain pipe 2, and the siphon speed is fast. When the second-stage siphon is performed, the bottom waste liquid is absorbed through the connection between the first-stage drain pipe 2, the connecting pipe 541, and the second-stage drain pipe 542, and the siphon speed is slow, but the impact on the concentrated phytoplankton at the bottom is small.

[0039] like Figures 1 to 9 As shown, a disassembly assembly 55 is provided on the outer wall of the tapered tube 51 . The disassembly assembly 55 includes a fixing ring 551 fixedly connected to the outer wall of one end of the tapered tube 51 . Four semicircular holes are respectively opened around the top of the fixing sleeve 52 .

[0040] Four sliding holes are respectively opened around the outer wall of the fixed sleeve 52, one end of the sliding hole is connected to the side wall of the semicircular hole, and four semicircular rods 552 are fixedly connected to the top of the fixed ring 551, one end of the semicircular rod 552 is slidably connected to the inner wall of the semicircular hole, and the inner wall of the sliding hole is slidably connected to the sliding rod 553.

[0041] One end of the sliding rod 553 contacts the outer wall of one end of the semicircular rod 552 . The top outer wall of the fixing sleeve 52 is fixedly connected with a threaded ring 554 , and the outer wall of the threaded ring 554 is threadedly connected with a torsion ring 555 .

[0042] The bottom end of the inner wall of the torsion ring 555 is fixedly connected with a flexible sleeve 556 . One side of the inner wall of the flexible sleeve 556 contacts the outer wall of one end of the sliding rod 553 . Both ends of the sliding rod 553 are spherical.

[0043] The above solution is adopted: through the flexible material of the flexible sleeve 556, when the flexible sleeve 556 contacts one end of the sliding rod 553, it can prevent the flexible sleeve 556 from causing excessive squeezing of the sliding rod 553 and damaging the sliding rod 553, thereby improving the protection effect.

[0044] A cleaning assembly 56 is provided at the bottom of the fixing ring 551 . The cleaning assembly 56 includes four vertical rods 561 fixedly connected to the bottom of the fixing ring 551 . A circular ring frame 562 is fixedly connected to the bottom of the vertical rods 561 .

[0045] The inner wall of the circular frame 562 is rotatably connected to an arc fan roller 563, and the arc fan angle of the arc fan roller 563 is maintained in the range of 15° to 30° to achieve the best power conversion effect, so that the arc fan roller 563 can be easily rotated by the flow of waste liquid. The outer wall of the bottom end of the first connecting rope 546 is set at the inner wall of the arc fan roller 563, and the top of the arc fan roller 563 is fixedly connected to four inclined rods 564, and the top of the inclined rod 564 is fixedly connected to an arc sleeve 565.

[0046] With the above solution, when the first stage siphoning is performed, the waste liquid flows faster at the closing portion of the tapered tube 51. When the flow rate is higher, a greater impact force can be generated to drive the arc-shaped fan roller 563 to rotate.

[0047] The outer wall of the arc sleeve 565 is in contact with the inner wall of the conical tube 51, and four cleaning strips 566 are fixedly connected to the top of the arc sleeve 565. The side walls of the cleaning strips 566 are in contact with the inner wall of the first-level drain pipe 2, and the outer wall of the top end of the conical foam plug 545 is fixedly connected with a sealing ring 567.

[0048] Adopting the above solution: when the sealing ring 567 and the conical foam plug 545 descend together, the sealing ring 567 will come into contact with the inner wall of the arc sleeve 565, and the sealing ring 567 and the arc sleeve 565 will fit tightly, making it convenient for the device to perform the second-stage siphon work.

[0049] The working principle and use process of the present invention:

[0050] By cleverly setting the regulating component 54, a graded automatic siphoning effect is achieved for the upper layer of waste liquid of phytoplankton. First, the first-stage siphoning is performed to discharge the upper layer of waste liquid inside the container bottle 1. The first-stage drain pipe 2 with a larger diameter is used, and the siphoning speed is fast. As the water level drops, the conical foam plug 545, the first connecting rope 546, the round buckle 547, the counterweight fastener 548, the second connecting rope 549, and the second float 540 drop at the same time until the conical foam plug 545 completely falls into the conical closing end of the arc sleeve 565, and the second-stage siphoning begins. In the second stage of siphoning, the lower layer of waste liquid of the container bottle 1 is discharged. The connecting pipe 541 and the second-stage drain pipe 542 with a smaller diameter are used. The siphoning speed is slow, and the impact on the concentrated phytoplankton at the bottom is small.

[0051] In the second stage of siphoning, the end of the second-stage drain pipe 542 adopts a counterweight ring frame 543 and a first float 544 to cooperate with each other to have a certain counterweight, while ensuring that the second-stage drain pipe 542 can follow the water level and maintain a certain vertical stability, and is not easily hindered by bending tension or friction and stops following changes. Through the setting of the air inlet plug 4, it can be used in an emergency in case of misoperation, and the lengths of the first-stage drain pipe 2 and the second-stage drain pipe 542 can be adjusted. The device realizes multi-stage automatic siphoning, solves the problems of high manpower input and unstable operation caused by traditional manual control of the siphon pipe to follow the liquid surface to absorb the supernatant, and the defects of the existing phytoplankton concentration device such as low siphon efficiency and easy occurrence of siphon following stop, improves the siphoning efficiency and siphoning quality of phytoplankton, is simple to operate, easy to carry, and has strong versatility, reducing manpower and time investment costs.

[0052] Pass one end of the first connecting rope 546 through the bottom end of the arc sleeve 565, so that the round buckle 547 at the bottom end of the first connecting rope 546 is clamped with the counterweight clamp 548, and then the conical tube 51 is docked with the bottom of the first-level drainage pipe 2. The conical tube 51 drives the fixing ring 551 to move upward, and the fixing ring 551 drives the semicircular rod 552 to pass through the interior of the semicircular hole of the fixing sleeve 52. The semicircular rod 552 squeezes the sliding rod 553, and the sliding rod 553 slides on the inner wall of the sliding hole, and the top of the torsion ring 555 is tightened. The inner wall of the end is twisted on the outer wall of the threaded ring 554, and the twisting ring 555 drives the flexible sleeve 556 to move vertically upward. During the upward movement of the flexible sleeve 556, the sliding rod 553 is squeezed, so that one end of the sliding rod 553 squeezes the side wall of the semicircular rod 552. The outer wall of one end of the semicircular rod 552 is provided with multiple grooves, which can improve the stability of the squeezing of the sliding rod 553 on the semicircular rod 552 and prevent the semicircular rod 552 from sliding down, so that the conical tube 51 and the first-level drainage pipe 2 can be quickly disassembled, which is convenient for replacement of the device.

[0053] Due to the opening setting on the inner wall of the arc fan roller 563, the outer wall of one end of the first connecting rope 546 is set on the inner wall of the arc fan roller 563, which can limit the lifting and lowering of the conical foam plug 545 connected to the first connecting rope 546 to prevent the conical foam plug 545 from being offset during the lifting and lowering. When the upper layer of waste liquid is siphoned with a higher flow rate and absorbed into the interior of the first-level drain pipe 2, the flow of the waste liquid is faster, which can cause the arc fan roller 563 to rotate slightly. The arc fan roller 563 drives the inclined rod 564 and the arc sleeve 565 to rotate slightly, and the arc sleeve 565 drives the cleaning strip 566 to rotate slightly. During the rotation of the cleaning strip 566, the inner wall of the first-level drain pipe 2 can be scraped to prevent impurities from adhering to the inner wall of the first-level drain pipe 2.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage phytoplankton siphon concentration device, comprising a container bottle (1), wherein the top of the container bottle (1) is connected to a first-stage drain pipe (2), one end of the first-stage drain pipe (2) is connected to a hose (3), and the top of the container bottle (1) near the first-stage drain pipe (2) is connected to an air inlet plug (4), characterized in that: Also includes; A regulating mechanism (5) comprising a tapered tube (51) in contact with the bottom of a first-stage drainage pipe (2), a fixed sleeve (52) being fixedly connected to the outer wall of the bottom end of the first-stage drainage pipe (2), a flexible support frame (53) being fixedly connected to the top side of the fixed sleeve (52), and a regulating assembly (54) being provided on the outer wall of the first-stage drainage pipe (2) for siphoning and grading the waste liquid in the upper layer of phytoplankton.

2. The multi-stage phytoplankton siphon concentration device according to claim 1, characterized in that: The regulating assembly (54) comprises a connecting pipe (541) connected to the first-stage drainage pipe (2) near the bottom end of the fixed sleeve (52); one end of the connecting pipe (541) away from the first-stage drainage pipe (2) is connected to the second-stage drainage pipe (542); the outer wall of one end of the second-stage drainage pipe (542) away from the connecting pipe (541) is fixedly connected to a counterweight ring frame (543); and one end of the outer wall of the counterweight ring frame (543) is fixedly connected to a first float (544).

3. The multi-stage phytoplankton siphon concentration device according to claim 2, characterized in that: A conical foam plug (545) is provided inside the first-stage drainage pipe (2), the bottom of the conical foam plug (545) is fixedly connected to a first connecting rope (546), the bottom of the first connecting rope (546) is fixedly connected to a round buckle (547), the bottom of the inner wall of the round buckle (547) is provided with a counterweight fastener (548) in contact, the bottom of the counterweight fastener (548) is fixedly connected to a second connecting rope (549), and the end of the second connecting rope (549) away from the counterweight fastener (548) is fixedly connected to a second float (540).

4. The multi-stage phytoplankton siphon concentration device according to claim 3, characterized in that: The outer wall of the conical tube (51) is provided with a disassembly assembly (55), and the disassembly assembly (55) includes a fixing ring (551) fixedly connected to the outer wall of one end of the conical tube (51), and four semicircular holes are respectively opened around the top of the fixing sleeve (52).

5. The multi-stage phytoplankton siphon concentration device according to claim 4, characterized in that: Four sliding holes are respectively provided around the outer wall of the fixing sleeve (52), one end of the sliding hole is connected to the side wall of the semicircular hole, the top of the fixing ring (551) is fixedly connected to four semicircular rods (552), one end of the semicircular rod (552) is slidably connected to the inner wall of the semicircular hole, and the inner wall of the sliding hole is slidably connected to a sliding rod (553).

6. The multi-stage phytoplankton siphon concentration device according to claim 5, characterized in that: One end of the sliding rod (553) contacts the outer wall of one end of the semicircular rod (552), the top outer wall of the fixing sleeve (52) is fixedly connected with a threaded ring (554), and the outer wall of the threaded ring (554) is threadedly connected with a torsion ring (555).

7. The multi-stage phytoplankton siphon concentration device according to claim 6, characterized in that: The bottom end of the inner wall of the torsion ring (555) is fixedly connected with a flexible sleeve (556), and one side of the inner wall of the flexible sleeve (556) contacts the outer wall of one end of the sliding rod (553), and both ends of the sliding rod (553) are spherical.

8. The multi-stage phytoplankton siphon concentration device according to claim 7, characterized in that: A cleaning assembly (56) is provided at the bottom of the fixing ring (551). The cleaning assembly (56) comprises four vertical rods (561) fixedly connected to the bottom of the fixing ring (551). The bottom of the vertical rods (561) is fixedly connected to a circular ring frame (562).

9. The multi-stage phytoplankton siphon concentration device according to claim 8, characterized in that: The inner wall of the circular frame (562) is rotatably connected to an arc-shaped fan roller (563), the outer wall of the bottom end of the first connecting rope (546) is arranged on the inner wall of the arc-shaped fan roller (563), the top of the arc-shaped fan roller (563) is respectively fixedly connected to four inclined rods (564), and the top of the inclined rod (564) is fixedly connected to an arc-shaped sleeve (565).

10. The multi-stage phytoplankton siphon concentration device according to claim 9, characterized in that: The outer wall of the arc-shaped sleeve (565) is in contact with the inner wall of the conical tube (51), and four cleaning strips (566) are fixedly connected to the top of the arc-shaped sleeve (565). The side walls of the cleaning strips (566) are in contact with the inner wall of the first-stage drain pipe (2), and the outer wall of the top end of the conical foam plug (545) is fixedly connected to a sealing ring (567).

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