Multi-depth benthos collection device

Abstract

The invention discloses a multi-depth benthos collection device, and belongs to the technical field of benthos collection, the multi-depth benthos collection device comprises a collection frame body, one side of the bottom of the collection frame body is provided with a sliding groove, and a vibration assembly is arranged in the sliding groove. According to the benthic organism collecting device, by arranging the adjusting and mounting assembly, sewage and soil in the collecting frame body can flow out from the gaps after being elutriated by water flow, and sample organisms are reserved in the collecting frame body, so that the benthic organism samples are cleaned and separated, the situation that the collecting quality is influenced by unnecessary impurity sewage is avoided, and the collecting efficiency is improved after elutriation is completed. A worker pulls a limiting rod, so that the limiting rod is separated from a limiting hole, limiting on a mounting frame is relieved, then the worker pulls the mounting frame out of a mounting groove seat through a handle, one side of a collecting frame body is completely opened, the worker can conveniently take out benthos samples from the collecting frame body, benthos are prevented from remaining in the collecting frame body, and the working efficiency is improved. The sampling efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of benthic organism collection, and in particular relates to a multi-depth benthic organism collection device. Background Art

[0002] Benthic organisms refer to the biological communities that live at the bottom of water bodies (such as the seabed, lake bottom, river bottom, etc.) and in their sediments. They usually live on the surface or inside the substrate and rely on the benthic environment to complete all or part of their life activities. These organisms are an important part of the aquatic ecosystem. In order to study benthic organisms, it is necessary to collect certain samples for experiments.

[0003] The document with publication number CN112535158B discloses a marine benthic organism collection device, including a rectangular bottom trawl box, a gate plate and a bottom sealing plate. The rectangular bottom trawl box is through-through, and balancing side panels are provided on the sides on both sides of the inlet end of the rectangular bottom trawl box. The gap between the balancing side panels and the rectangular bottom trawl box forms a water inlet channel. The bottom sealing plate is detachably connected to the outlet end of the rectangular bottom trawl box. The gate plate is arranged at a position near the open end in the rectangular bottom trawl box. The gate plate is connected to an elastic trigger mechanism that can raise or lower the gate plate so that the inlet of the rectangular bottom trawl box is opened or closed accordingly. The invention has an ingenious structure, is easy to use, saves labor, is not easy to shake during use, has good stability in use, and can prevent benthic organisms from escaping. However, in actual use, after the collection device completes collection, the benthic organisms, sludge and sewage in the collection device are mixed, making it inconvenient for staff to take samples. Therefore, improvement is needed. Summary of the Invention

[0004] The purpose of the present invention is to propose a multi-depth benthic organism collection device to solve the problem that benthic organisms, sludge and sewage are mixed in the collection device, making it inconvenient for staff to take samples.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A multi-depth benthic organism collection device includes a collection frame, a sliding groove is provided on one side of the bottom of the collection frame, a vibration component is provided in the sliding groove, a collection shovel is provided on one side of the vibration component, and an adjustment and installation component and a one-way component are respectively provided on both sides of the collection frame; The adjustment mounting assembly includes a mounting frame that can be detachably mounted on one side of a collection frame, a plurality of adjustment blades distributed in a linear array are rotatably connected inside the mounting frame, a cavity is opened on both sides of the mounting frame, and a connecting shaft is connected on both sides of the adjustment blade, one end of the connecting shaft extends into the interior of the cavity and is rotatably connected to the cavity, and the end of the connecting shaft away from the adjustment blade is connected to a transmission gear, and the bottoms of the plurality of transmission gears are meshed and connected to the same movable rack, and one side of the movable rack is in contact with one side of the inner wall of the cavity.

[0006] As a further description of the above technical solution: The bottom of the movable rack is connected to an electric push rod, and one end of the electric push rod away from the movable rack is connected to one side of the inner wall of the cavity.

[0007] As a further description of the above technical solution: One side of the collection frame is connected to two symmetrically arranged mounting slots, the mounting frame is slidably connected between the two mounting slots, the bottom of one side of the collection frame is connected to a horizontal plate, the bottom of the mounting frame fits with the top of the horizontal plate, and the top of the mounting frame is connected to a handle.

[0008] As a further description of the above technical solution: One side of the mounting frame is provided with two symmetrically arranged limit holes, and the top of the horizontal plate is connected to two symmetrically arranged connecting plates, one side of the connecting plate is connected to the mounting bracket, and one side of the mounting bracket is provided with a sliding hole, and a limit rod is slidably connected in the sliding hole, and one end of the limit rod extends to the other side of the connecting plate and is engaged with the limit hole. The outer surface of the limit rod is connected to the limit plate, and the cross-section of the limit plate is circular. A reset spring is sleeved on the outer surface of the limit rod, and both ends of the reset spring are respectively connected to one side of the limit plate and one side of the mounting bracket.

[0009] As a further description of the above technical solution: The vibration assembly includes a fixed rod, which is fixedly connected to the sliding groove. The fixed rod is provided with a plurality of sliding circular holes distributed in a linear array. A sliding rod capable of automatically resetting is slidably connected in the sliding circular holes. One end of the plurality of sliding rods is connected to one side of the collecting shovel. The ends of the plurality of sliding rods away from the collecting shovel are connected to the same sliding plate, and the sliding plate is slidably connected to the sliding groove.

[0010] As a further description of the above technical solution: A second spring is sleeved on the outer surface of the sliding rod, and two ends of the second spring are respectively connected to one side of the sliding plate and one side of the fixed rod.

[0011] As a further description of the above technical solution: A rotating cam is attached to one side of the sliding plate away from the sliding rod, a driving motor is fixedly installed in the sliding groove through a mounting seat, and one end of the output shaft of the driving motor is connected to the bottom of the rotating cam.

[0012] As a further description of the above technical solution: The one-way component includes two symmetrically arranged vertical rods, one side of the vertical rods is connected to one side of the inner wall of the collection frame, one side of the vertical rods is connected to a plurality of fixed boxes distributed in a linear array, an incomplete gear is rotatably connected to the fixed box through a rotating shaft, one side of the incomplete gear is connected to a blocking rod, a through groove is provided on one side of the fixed box, the blocking rod is slidably connected in the through groove, one side of the incomplete gear is meshed with a reset rack that can drive the incomplete gear to reset, and one side of the reset rack is in contact with one side of the inner wall of the fixed box.

[0013] As a further description of the above technical solution: Both sides of the reset rack are connected to fixed sleeves, and a fixed slide rod is slidably connected to the fixed sleeve. The fixed slide rod is fixedly connected to the fixed box. A first spring is sleeved on the outer surface of the fixed slide rod, and the two ends of the first spring are respectively connected to one side of the fixed sleeve and one side of the inner wall of the fixed box. A flexible closing pad for sealing the fixed box is provided in the through groove, and the cross-section of the flexible closing pad is rectangular.

[0014] As a further description of the above technical solution: A plurality of filter holes are provided on both sides of the collection frame, and a connector is connected to the top of the collection frame for connecting to external equipment.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, by setting an adjustment installation component, the staff starts the electric push rod, and the electric push rod drives the adjustment fan blade deflection by moving the rack and the transmission gear, so that a gap appears on the inner wall of the installation frame. The staff places the collection frame into the water for reciprocating shaking and washing. The sewage and mud in the collection frame will flow out from the gap after being washed by the water flow, and the sample organisms will remain in the collection frame, thereby realizing the cleaning and separation of the benthic biological samples, avoiding unnecessary impurities and sewage affecting the collection quality. After the washing is completed, the staff pulls the limit rod to separate the limit rod from the limit hole, thereby releasing the limit on the installation frame. Afterwards, the staff pulls the installation frame out of the installation slot by the handle, so that one side of the collection frame is completely opened, which is convenient for the staff to take out the benthic biological samples from the collection frame, avoiding benthic organisms remaining inside, and improving the sampling efficiency.

[0016] 2. In the present invention, a vibration component is provided, and the driving motor drives the collecting shovel to vibrate back and forth by rotating the cam, the sliding plate, the second spring, the sliding plate and the sliding rod. The reciprocating vibration of the collecting shovel cooperates with the external equipment to shovel and collect the terrestrial organisms on the riverbed. The reciprocating vibration of the collecting shovel can increase the shearing force on the riverbed soil, thereby improving the collection efficiency of the benthic organisms.

[0017] 3. In the present invention, a one-way component is provided. When soil and environmental organisms enter the collection frame, the blocking rod drives the incomplete gear and the reset rack under the action of external force. After the collection is completed, the blocking rod is no longer affected by the external force. The first spring drives the reset rack to perform a reset movement through the fixed sliding sleeve. The reset rack drives the blocking rod to reset again through the incomplete gear, thereby realizing one-way limiting of the blocking rod and preventing benthic organisms from escaping from the collection frame. The one-way blocking channel formed by the cooperation of the reset rack, the incomplete gear, the blocking rod and the first spring can prevent the soil and environmental organisms on the riverbed from escaping without blocking the entry of the soil and environmental organisms on the riverbed, thereby ensuring the integrity of the benthic organisms during collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a multi-depth benthic organism collection device proposed by the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of a multi-depth benthic organism collection device proposed by the present invention from another perspective; Figure 3 This is a schematic diagram of the three-dimensional disassembled structure of a multi-depth benthic organism collection device proposed by the present invention; Figure 4 A multi-depth benthic organism collection device proposed by the present invention Figure 3 A schematic diagram of the enlarged structure of part A; Figure 5 This is a schematic diagram of the internal three-dimensional structure of a one-way component of a multi-depth benthic organism collection device proposed by the present invention; Figure 6 This is a schematic diagram of a three-dimensional cross-sectional structure of an adjustment and installation assembly of a multi-depth benthic organism collection device proposed by the present invention; Figure 7 A multi-depth benthic organism collection device proposed by the present invention Figure 6 The enlarged structural diagram of part B in the middle; Figure 8 This is a partial three-dimensional structural diagram of the adjustment and installation components of a multi-depth benthic organism collection device proposed by the present invention.

[0019] Legend: 1. Collection frame; 2. Connecting piece; 3. Adjustment and installation assembly; 301. Handle; 302. Installation frame; 303. Installation slot; 304. Connecting plate; 305. Installation frame; 306. Adjustment blade; 307. Limiting hole; 308. Moving rack; 309. Transmission gear; 310. Electric push rod; 311. Reset spring; 312. Limiting rod; 4. One-way assembly; 401. Vertical rod; 402. Fixed box; 403. Flexible closing pad; 404. Blocking rod; 405. Incomplete gear; 406. Reset rack; 407. Fixed slide rod; 408. Fixed sleeve; 409. First spring; 5. Collection shovel; 6. Filter hole; 7. Vibration assembly; 701. Fixed rod; 702. Sliding rod; 703. Second spring; 704. Sliding plate; 705. Drive motor; 706. Rotating cam. DETAILED DESCRIPTION

[0020] 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 any creative efforts shall fall within the scope of protection of the present invention.

[0021] See also Figures 1-8 , the present invention provides a technical solution: A multi-depth benthic organism collection device includes a collection frame 1, a sliding groove is provided on one side of the bottom of the collection frame 1, a vibration component 7 is provided in the sliding groove, a collection shovel 5 is provided on one side of the vibration component 7, an adjustment and installation component 3 and a one-way component 4 are respectively provided on both sides of the collection frame 1, a plurality of filter holes 6 are provided on both sides of the collection frame 1, and a connector 2 is connected to the top of the collection frame 1 for connecting to external equipment.

[0022] The adjustment mounting assembly 3 includes a mounting frame 302 that can be detachably mounted on one side of the collection frame 1, and a plurality of adjustment blades 306 distributed in a linear array are rotatably connected inside the mounting frame 302. A cavity is opened on both sides of the mounting frame 302, and both sides of the adjustment blades 306 are connected to a connecting shaft, one end of the connecting shaft extends into the cavity and is rotatably connected to the cavity, and the end of the connecting shaft away from the adjustment blade 306 is connected to a transmission gear 309, and the bottoms of the plurality of transmission gears 309 are meshed and connected to the same moving rack 308, one side of the moving rack 308 is in contact with the side of the inner wall of the cavity, and the bottom of the moving rack 308 is connected to an electric push rod 310, and the end of the electric push rod 310 away from the moving rack 308 is connected to the side of the inner wall of the cavity, and one side of the collection frame 1 is connected to two symmetrically arranged mounting slots 303, The cam 312 is actuated to move the cam 314 upwards and downwards to move the cam 315 downwards, so that the cam 314 can move relative to the cam 316. The cam 312 is actuated to move the cam 316 downwards, so that the cam 314 can move relative to the cam 316. The implementation method is specifically as follows: by setting and adjusting the installation component 3, the staff starts the electric push rod 310, and the electric push rod 310 drives the adjustment fan blade 306 to deflect by moving the rack 308 and the transmission gear 309, so that a gap appears on the inner wall of the installation frame 302. The staff places the collection frame 1 in water for reciprocating shaking and washing. After the sewage and mud in the collection frame 1 are washed by the water flow, they will flow out from the gap and allow the sample organisms to remain in the collection frame 1, thereby achieving the cleaning and separation of the benthic biological samples, avoiding unnecessary impurities and sewage affecting the collection quality. After the washing is completed, the staff pulls the limit rod 312 to separate the limit rod 312 from the limit hole 307, thereby releasing the limit on the installation frame 302. Afterwards, the staff pulls the installation frame 302 out of the installation slot 303 through the handle 301, so that one side of the collection frame 1 is completely opened, which is convenient for the staff to take out the benthic biological samples from the collection frame 1, avoiding benthic organisms remaining inside, and improving sampling efficiency.

[0023] The vibration assembly 7 includes a fixed rod 701, which is fixedly connected to the sliding groove. The fixed rod 701 is provided with a plurality of sliding circular holes distributed in a linear array. A sliding rod 702 that can automatically reset is slidably connected in the sliding circular hole. One end of the plurality of sliding rods 702 is connected to one side of the collecting shovel 5, and the end of the plurality of sliding rods 702 away from the collecting shovel 5 is connected to the same sliding plate 704. The sliding plate 704 is slidably connected to the sliding groove. A second spring 703 is sleeved on the outer surface of the sliding rod 702, and the two ends of the second spring 703 are respectively connected to one side of the sliding plate 704 and one side of the fixed rod 701. A rotating cam 706 is attached to the side of the sliding plate 704 away from the sliding rod 702. A driving motor 705 is fixedly installed in the sliding groove through a mounting seat, and one end of the output shaft of the driving motor 705 is connected to the bottom of the rotating cam 706.

[0024] The specific implementation method is as follows: by setting a vibration component 7, the driving motor 705 drives the collecting shovel 5 to vibrate back and forth by rotating the cam 706, the sliding plate 704, the second spring 703, the sliding plate 704 and the sliding rod 702. The reciprocating vibration of the collecting shovel 5 cooperates with the external equipment to shovel and collect the terrestrial organisms on the riverbed. The reciprocating vibration of the collecting shovel 5 can increase the shear force on the riverbed soil, thereby improving the collection efficiency of the benthic organisms.

[0025] The one-way component 4 includes two symmetrically arranged vertical rods 401, one side of the vertical rod 401 is connected to one side of the inner wall of the collection frame 1, and one side of the vertical rod 401 is connected to a plurality of fixed boxes 402 distributed in a linear array, an incomplete gear 405 is rotatably connected to the fixed box 402 through a rotating shaft, and a blocking rod 404 is connected to one side of the incomplete gear 405. A through groove is provided on one side of the fixed box 402, and the blocking rod 404 is slidably connected to the through groove. A reset rack 406 that can drive the incomplete gear 405 to reset is engaged with one side of the incomplete gear 405. One side of the reset rack 406 is in contact with one side of the inner wall of the fixed box 402, and both sides of the reset rack 406 are connected with fixed sleeves 408. A fixed slide rod 407 is slidably connected in the fixed sleeve 408, and the fixed slide rod 407 is fixedly connected to the fixed box 402. A first spring 409 is sleeved on the outer surface of the fixed slide rod 407, and the two ends of the first spring 409 are respectively connected to one side of the fixed sleeve 408 and one side of the inner wall of the fixed box 402. A flexible sealing pad 403 for sealing the fixed box 402 is provided in the through groove, and the cross-section of the flexible sealing pad 403 is rectangular.

[0026] The specific implementation method is as follows: by setting a one-way component 4, when soil and environmental organisms enter the collection frame 1, the blocking rod 404 drives the incomplete gear 405 and the reset rack 406 under the action of external force. After the collection is completed, the blocking rod 404 is no longer affected by the external force, and the first spring 409 drives the reset rack 406 to perform a reset movement through the fixed sleeve 408. The reset rack 406 drives the blocking rod 404 to reset again through the incomplete gear 405, thereby realizing the one-way limitation of the blocking rod 404, preventing the benthic organisms from escaping from the collection frame 1, and the one-way blocking channel formed by the cooperation of the reset rack 406, the incomplete gear 405, the blocking rod 404 and the first spring 409 can prevent the soil and environmental organisms on the riverbed from escaping without blocking the entry of the soil and environmental organisms on the riverbed, thereby ensuring the integrity of the benthic organisms during collection.

[0027] Working principle: When in use, the staff connects to the external device through the connector 2, adjusts the position of the collection frame 1 in the river by adjusting the position of the external device, and waits until the bottom of the collection frame 1 contacts the riverbed. The external device drives the collection frame 1 to move on the riverbed and collects benthic organisms.

[0028] During this process, the driving motor 705 drives the rotating cam 706 to rotate, and the rotating cam 706 drives the sliding plate 704 to move to one side. At the same time, the second spring 703 drives the sliding plate 704 to perform a reset movement, so that the sliding plate 704 performs a reciprocating motion, and the sliding plate 704 drives the sliding rod 702 to reciprocate, and the sliding rod 702 drives the collecting shovel 5 to vibrate reciprocatingly. The reciprocating vibration of the collecting shovel 5 cooperates with the external equipment to shovel and collect the terrestrial organisms on the riverbed.

[0029] The external equipment cooperates with the collecting shovel 5 and the vibration component 7 to shovel and collect the mud and environmental organisms on the riverbed. During this process, when the mud and environmental organisms enter the collecting frame 1, the blocking rod 404 moves backward under the action of external force. At this time, the blocking rod 404 drives the incomplete gear 405 to rotate, and the incomplete gear 405 drives the reset rack 406 to move. When the mud and environmental organisms enter the collecting frame 1, the blocking rod 404 is no longer affected by external force. At this time, the first spring 409 drives the fixed sleeve 408 to perform a reset movement, and the fixed sleeve 408 drives the reset rack 406 to perform a reset movement, and the reset rack 406 drives the incomplete gear 405 to reset and rotate, so that the blocking rod 404 is reset, and the through groove will limit one side of the blocking rod 404, thereby realizing the one-way limit of the blocking rod 404 to prevent the benthic organisms from leaving the collecting frame 1.

[0030] After the collection of benthic organisms is completed, the collection frame 1 is taken out of the water surface through an external device. Then, the staff starts the electric push rod 310, the electric push rod 310 drives the moving rack 308 to move, the moving rack 308 drives the transmission gear 309 to rotate, and the transmission gear 309 drives the adjustment fan blade 306 to deflect, so that a gap appears on the inner wall of the installation frame 302. Then, the staff places the collection frame 1 in water for reciprocating shaking and washing. After the sewage and mud in the collection frame 1 are washed by the water flow, they will flow out from the gap and allow the sample organisms to remain in the collection frame 1. After washing, the staff pulls the limit rod 312 to separate the limit rod 312 from the limit hole 307, thereby releasing the limit on the installation frame 302. Then, the staff pulls the installation frame 302 out of the installation slot 303 through the handle 301, so that one side of the collection frame 1 is completely opened, which is convenient for the staff to take out the benthic organism sample from the collection frame 1.

[0031] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A multi-depth benthic organism collection device, comprising a collection frame (1), characterized in that: A sliding groove is provided on one side of the bottom of the collection frame (1), a vibration component (7) is provided in the sliding groove, a collection shovel (5) is provided on one side of the vibration component (7), and an adjustment and installation component (3) and a one-way component (4) are provided on both sides of the collection frame (1); The adjustment mounting assembly (3) includes a mounting frame (302) that can be detachably mounted on one side of the collection frame (1), a plurality of adjustment blades (306) distributed in a linear array are rotatably connected inside the mounting frame (302), a cavity is provided on both sides of the mounting frame (302), a connecting shaft is connected on both sides of the adjustment blade (306), one end of the connecting shaft extends into the interior of the cavity and is rotatably connected to the cavity, an end of the connecting shaft away from the adjustment blade (306) is connected to a transmission gear (309), and the bottoms of the plurality of transmission gears (309) are meshedly connected to the same moving rack (308), and one side of the moving rack (308) is in contact with one side of the inner wall of the cavity.

2. The multi-depth benthic organism collection device according to claim 1, characterized in that: The bottom of the movable rack (308) is connected to an electric push rod (310), and one end of the electric push rod (310) away from the movable rack (308) is connected to one side of the inner wall of the cavity.

3. The multi-depth benthic organism collection device according to claim 1, characterized in that: One side of the collection frame (1) is connected to two symmetrically arranged mounting slots (303), the mounting frame (302) is slidably connected between the two mounting slots (303), the bottom of one side of the collection frame (1) is connected to a horizontal plate, the bottom of the mounting frame (302) is fitted with the top of the horizontal plate, and the top of the mounting frame (302) is connected to a handle (301).

4. The multi-depth benthic organism collection device according to claim 3, characterized in that: Two symmetrically arranged limiting holes (307) are provided on one side of the mounting frame (302), and two symmetrically arranged connecting plates (304) are connected to the top of the horizontal plate. One side of the connecting plate (304) is connected to a mounting frame (305), and a sliding hole is provided on one side of the mounting frame (305). A limiting rod (312) is slidably connected in the sliding hole. One end of the limiting rod (312) extends to the other side of the connecting plate (304) and is mutually engaged with the limiting hole (307). The outer surface of the limiting rod (312) is connected to the limiting plate, and the cross-section of the limiting plate is circular. A return spring (311) is sleeved on the outer surface of the limiting rod (312), and the two ends of the return spring (311) are respectively connected to one side of the limiting plate and one side of the mounting frame (305).

5. The multi-depth benthic organism collection device according to claim 1, characterized in that: The vibration assembly (7) includes a fixed rod (701), the fixed rod (701) is fixedly connected to the sliding groove, the fixed rod (701) is provided with a plurality of sliding circular holes distributed in a linear array, a sliding rod (702) capable of automatically resetting is slidably connected to the sliding circular hole, one end of the plurality of sliding rods (702) is connected to one side of the collecting shovel (5), and the ends of the plurality of sliding rods (702) away from the collecting shovel (5) are connected to the same sliding plate (704), and the sliding plate (704) is slidably connected to the sliding groove.

6. The multi-depth benthic organism collection device according to claim 5, characterized in that: A second spring (703) is sleeved on the outer surface of the sliding rod (702), and two ends of the second spring (703) are respectively connected to one side of the sliding plate (704) and one side of the fixed rod (701).

7. The multi-depth benthic organism collection device according to claim 5, characterized in that: A rotating cam (706) is attached to one side of the sliding plate (704) away from the sliding rod (702), and a driving motor (705) is fixedly installed in the sliding groove through a mounting seat, and one end of the output shaft of the driving motor (705) is connected to the bottom of the rotating cam (706).

8. The multi-depth benthic organism collection device according to claim 1, characterized in that: The one-way component (4) comprises two symmetrically arranged vertical rods (401), one side of the vertical rods (401) is connected to one side of the inner wall of the collection frame (1), one side of the vertical rods (401) is connected to a plurality of fixed boxes (402) distributed in a linear array, an incomplete gear (405) is rotatably connected in the fixed box (402) via a rotating shaft, one side of the incomplete gear (405) is connected to a blocking rod (404), one side of the fixed box (402) is provided with a through groove, the blocking rod (404) is slidably connected in the through groove, one side of the incomplete gear (405) is meshedly connected to a reset rack (406) capable of driving the incomplete gear (405) to reset, and one side of the reset rack (406) is in contact with one side of the inner wall of the fixed box (402).

9. The multi-depth benthic organism collection device according to claim 8, characterized in that: Both sides of the reset rack (406) are connected to fixed sleeves (408), and a fixed slide rod (407) is slidably connected inside the fixed sleeve (408). The fixed slide rod (407) is fixedly connected to the fixed box (402). A first spring (409) is sleeved on the outer surface of the fixed slide rod (407), and the two ends of the first spring (409) are respectively connected to one side of the fixed sleeve (408) and one side of the inner wall of the fixed box (402). A flexible sealing pad (403) for sealing the fixed box (402) is provided in the through groove, and the cross-section of the flexible sealing pad (403) is rectangular.

10. The multi-depth benthic organism collection device according to claim 1, characterized in that: A plurality of filter holes (6) are provided on both sides of the collection frame (1), and a connector (2) is connected to the top of the collection frame (1) for connection with external equipment.

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