A cleaning device suitable for collecting benthic organisms on site

Abstract

The present invention relates to a cleaning device suitable for collecting benthic organisms on site, comprising a sealing screen cover, a steel ring, a screen pocket, and a telescopic rod. The sealing screen cover is arranged above the steel ring and fastened with the outer side of the steel ring; the telescopic rod is connected to the steel ring through a connecting piece; one end of the screen pocket is closed by a closed zipper, and the other end is provided with an opening, and the open end of the screen pocket is connected to the steel ring. The telescopic rod comprises a connector, at least one single-section rod, and a handle. One end of the connector is connected to the steel ring, and the other end is threadedly connected to the single-section rod. The other end of the single-section rod is threadedly connected to the handle, and the connector is a straight connector or a hook connector. The device has a simple structure, ingenious design, and is easy to operate. It can reduce the labor intensity of sampling, is detachable and foldable, and is easy to carry. It can be used to clean benthic organisms and is suitable for collecting benthic organisms in shallow water bodies such as rivers. It is a sampling tool suitable for monitoring aquatic organisms in the wild.

Description

Technical Field

[0001] The invention relates to the technical field of ecological environment monitoring, and in particular to a cleaning device suitable for collecting benthic organisms on site. Background Art

[0002] Ecological environmental monitoring is an essential basic work for environmental protection. Biological monitoring is also one of the important means of environmental monitoring. Benthic biological monitoring is a necessary item in biological monitoring in rivers, lakes and reservoirs.

[0003] At present, there is no special benthic organism cleaning device on the market. When scientific researchers conduct benthic organism monitoring in the wild, most of them directly cut a large piece of sieve silk and clean the sampled benthic organisms on the spot. This cleaning method has the following disadvantages. First, the collected bottom mud is poured onto the sieve silk spread in the basin, and the outer edge of the sieve silk is directly held by hand for cleaning. If you are not careful, the bottom mud will overflow and affect the monitoring results. Second, it is inconvenient to rinse. When rinsing with water, mud will splash everywhere, making the deck of the ship a mess, and the clothes and shoes of the monitoring personnel will also get wet and dirty. Third, it is time-consuming and labor-intensive, and the cleaning is not thorough and it is inconvenient to pour out, which increases the workload and the difficulty of sorting. Summary of the invention

[0004] In view of the technical problems existing in the prior art, the present invention provides a cleaning device suitable for on-site collection of benthic organisms. The device has a simple structure, ingenious design, and is easy to operate, which can reduce labor intensity. It can be disassembled and folded for easy carrying. It can be used to clean benthic organisms and is suitable for collecting benthic organisms in shallow water bodies such as rivers. It is a sampling tool suitable for field aquatic organism monitoring.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a cleaning device suitable for on-site collection of benthic organisms, comprising a sealing sieve cover, a steel ring, a sieve bag, and a telescopic rod, wherein the sealing sieve cover is arranged above the steel ring and fastened to the outer side of the steel ring; the telescopic rod is connected to the steel ring through a connecting piece; the sieve bag is closed at one end and has an opening at the other end, and the open end of the sieve bag is connected to the steel ring.

[0006] When using the device to collect benthic biological samples, open the sealing sieve cover and hold the telescopic rod to collect the benthic organisms; when using the device to clean benthic biological samples, pour the collected bottom mud into the device, install the sealing sieve cover, place the sieve bag in water, hold the telescopic rod, and shake the sieve bag in the water to wash the sampled biological samples with water. Cleaning is simple, convenient, clean and hygienic, and does not pollute the environment.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Preferably, the sieve sealing cover comprises a sieve and an outer frame, the outer frame is an annular structure, and the outer frame fixes and presses the sieve on the steel ring. The sieve sealing cover can be disassembled into the outer frame and the sieve, which saves space and is convenient to carry. The sieve is a consumable and can be easily replaced after being damaged.

[0009] Preferably, the outer frame is formed by combining two frame sections, and the two frame sections are connected by buckles. The two frame sections are combined to form the outer frame, which is connected by two buckles, has reliable connection, is easy to disassemble, can be folded when not in use, is easy to carry, and saves space.

[0010] Preferably, two handles are welded on the outer frame, and the two handles are symmetrically arranged on the outer frame. When the sampled sample is cleaned, the arrangement of the two handles enables the staff to extract the sample more conveniently and more smoothly, and prevents the telescopic rod from rotating, which makes it inconvenient to extract the sample.

[0011] Preferably, the opening end of the sieve bag is provided with a nylon buckle, and the opening end of the sieve bag is fixedly connected to the steel ring through the nylon buckle. The setting of the nylon buckle enables the sieve bag to be reliably and firmly fixed on the steel ring, and the sieve bag can be conveniently and quickly disassembled and assembled when the device is not in use or the sieve bag is damaged and needs to be replaced.

[0012] Preferably, the closed end of the sieve pocket is provided with a closed zipper. When the sample is cleaned, it is necessary to take a sample. The closed zipper at the bottom of the sieve pocket allows the sample to be put into the sealed bag by directly opening the closed zipper during sampling, which is convenient and simple.

[0013] Preferably, the steel ring is an annular steel bar, the joints at both ends of the steel bar are bent and face away from the center of the steel ring, and the joints at both ends cooperate with each other to form a cylinder, and the outer surface of the cylinder is provided with an external thread. The external thread on the outer surface of the cylinder can be threadedly connected with the telescopic rod, and the connection is reliable. This connection method is convenient for collecting underwater samples.

[0014] Preferably, the telescopic rod comprises a connector, at least one single-section rod, and a handle, wherein one end of the connector is connected to the steel ring, and the other end is threadedly connected to the single-section rod, and the other end of the single-section rod is threadedly connected to the handle. The connector is used to connect to the sieve pocket through the steel ring, and the handle is used for the operator to hold the device. Multiple single-section rods are provided, and the length of the telescopic rod can be adjusted according to the needs of sampling through the threaded connection on the multiple single-section rods, thereby increasing the applicability of the device.

[0015] Preferably, the connector is a straight connector, one end of which is threadedly connected to the single-section rod, and the other end of the straight connector is provided with an internal thread, which is connected to the external thread on the steel ring. This connection method is suitable for sampling benthic organisms in aquatic habitats and for cleaning samples when the operator is not high above the water surface.

[0016] Preferably, the connector is a hook connector, one end of which is threadedly connected to the single-section rod, and the other end of which is a hook, and the steel ring is provided with at least three rings, and the hook is connected to the rings on the steel ring through a flexible connector. This connection method is suitable for when the operator is at a high distance from the water surface, and it is inconvenient to use a straight connector to clean the sample. This connection method makes the telescopic rod and the sieve pocket a flexible connection, which is more flexible.

[0017] The beneficial effects of the present invention are: the device has a simple structure, ingenious design, easy operation, can reduce labor intensity, can be disassembled and folded, and is easy to carry. It can be used to clean benthic organisms and is suitable for collecting benthic organisms in shallow water bodies such as rivers. It is a sampling tool suitable for monitoring aquatic organisms in the wild. When sampling benthic organisms through the device, the sealing and screening cover is opened, and the telescopic rod is connected to the steel ring with a straight connector. The distance from the device to the water bottom is adjusted by adding or reducing the number of single-section rods on the telescopic rod, which makes sampling convenient. When cleaning the collected benthic organisms, the sealing and screening cover is assembled, the sieve pocket part of the device is placed in the water, and the device is dragged and washed by the power of the forward movement of the ship or the operator holding the handle, so that the sample in the sieve pocket is cleaned, and the cleaning is more thorough, quick, time-saving and labor-saving, and the cleaning process does not harm the biological sample. When the hull is high and the operator is too high from the water surface, a hook-shaped connector can be used to connect the telescopic rod and the steel ring, so that the telescopic rod and the sieve pocket are flexibly connected. This connection method is not limited by the angle between the operator and the water surface, which improves the applicability of the device for cleaning samples. When the sample is cleaned, the closed zipper can be opened to collect the sample, which is easy to operate, clean and hygienic. When the device is not in use, the device can be disassembled and folded to save space and be easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of Embodiment 2 of the present invention;

[0020] Figure 3 This is a schematic diagram of the sieve pocket structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the steel ring structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the composition of the sieve sealing cover of the present invention;

[0023] Figure 6 It is a schematic diagram of the telescopic rod composition of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Screen cover, 101. Screen, 102. Outer frame, 103. Buckle, 104. Handle, 2. Screen pocket, 201. Velcro, 202. Closed zipper, 3. Steel ring, 301. Lifting ring, 302. Steel ring joint, 303. Nut, 304. Screw, 4. Telescopic rod, 401. Hook connector, 402. Straight connector, 403. Single-section rod, 404. Handle, 5. Ear rope. DETAILED DESCRIPTION

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0027] Embodiment 1:

[0028] like Figure 1 , Figure 3 to Figure 6 As shown, a cleaning device suitable for collecting benthic organisms on site comprises a sealing sieve cover 1, a steel ring 3, a sieve bag 2, and a telescopic rod 4. The sealing sieve cover 1 is arranged above the steel ring 3 and fastened to the outer side of the steel ring 3; the telescopic rod 4 is connected to the steel ring 3 through a connecting piece; the sieve bag 2 is closed at one end and has an opening at the other end, and the open end of the sieve bag 2 is connected to the steel ring 3. The sieve bag 2 is arranged in an inverted bell shape and has a mesh structure. The sieve bag 2 of different meshes can be replaced according to the type of sample to be sampled.

[0029] When using the device to collect benthic biological samples, open the sealing and screening cover 1, hold the telescopic rod 4 to collect the benthic organisms; when cleaning the collected benthic biological samples, install the sealing and screening cover 1, place the sieve bag 2 in water, hold the telescopic rod 4, and shake the sieve bag 2 in the water, so that the sampled biological samples can be washed with water, which is simple and convenient to clean and does not pollute the environment.

[0030] Based on the above technical solution, the present invention can also be improved as follows.

[0031] In this embodiment, Figure 5As shown, the sieve cover 1 includes a screen 101 and an outer frame 102, and the outer frame 102 is an annular structure. The outer frame 102 fixes and presses the screen 101 on the steel ring 3. A groove is provided on the inner side of the outer frame 102, and the groove matches the shape of the steel ring 3. When the outer frame 102 is installed in place, the groove clamps the steel ring 3. The screen 101 is a screen silk commonly used for cleaning benthic organisms. Because the screen silk material is very soft and difficult to shape, in this embodiment, the screen silk is cut to the size of the outer frame 102, and the outer edge of the cut screen silk is dipped in glue. The screen silk after the dip in glue treatment maintains its own flexibility. At the same time, because the glue on the outer edge is used to shape it, even after folding, the screen silk can still maintain the same shape as the outer frame 102 when it is unfolded. The sieve cover 1 can be disassembled into the outer frame 102 and the screen 101, which saves space and is convenient to carry. The screen 101 is a consumable and is easy to replace after being damaged.

[0032] In this embodiment, the outer frame 102 is formed by combining two frame sections, and the two frame sections are connected by buckles 103. The two frame sections are combined to form the outer frame 102, which is connected by two buckles 103, and the connection is reliable, easy to disassemble, and can be folded when not in use, easy to carry and save space.

[0033] In this embodiment, two handles 104 are welded on the outer frame 102, and the two handles 104 are symmetrically arranged on the outer frame 102. When the sampled samples are cleaned, the arrangement of the two handles 104 enables the staff to extract the samples more conveniently and smoothly, and prevents the telescopic rod from rotating, which makes it inconvenient to extract the samples.

[0034] In this embodiment, Figure 3 As shown, the open end of the sieve bag 2 is provided with a nylon buckle 201, and the open end of the sieve bag 2 is fixedly connected to the steel ring 3 through the nylon buckle 201. The setting of the nylon buckle 201 enables the sieve bag 2 to be reliably and firmly fixed on the steel ring 3, and when the device is not in use or the sieve bag 2 is damaged and needs to be replaced, the sieve bag 2 can be conveniently and quickly disassembled and assembled.

[0035] In this embodiment, Figure 3 As shown, the closed end of the sieve pocket 2 is provided with a closed zipper 202. When the sample is cleaned, it is necessary to take the sample out. The closed zipper 202 at the bottom of the sieve pocket 2 is set so that the closed zipper 202 can be directly opened when sampling, and the sample can be put into the sealed bag, which is convenient and simple.

[0036] In this embodiment, Figure 4As shown, the steel ring 3 is an annular steel bar, and the joints at both ends of the steel bar are bent and face away from the center of the steel ring 3. The joints at both ends cooperate with each other to form a cylindrical steel ring joint 302, and the outer surface of the steel ring joint 302 is provided with an external thread. The external thread on the outer surface of the steel ring joint 302 can be threadedly connected with the telescopic rod 4, and the connection is reliable. This connection method is convenient for collecting underwater samples. When the joints at both ends of the annular steel bar are not connected to the telescopic rod 4, a nut 303 can be used to fix the two joints to increase the firmness of the device during use.

[0037] According to the need of carrying, the annular steel bar can be configured as a combination of multiple arc-shaped steel bars, the connection between adjacent arc-shaped steel bars is configured as a flat structure, the connection between adjacent arc-shaped steel bars is provided with a through hole, and the screw 304 passes through the through hole to connect the adjacent arc-shaped steel bars. When the device is not in use, the screws 304 are removed, and the multiple arc-shaped steel bars can be stored in sections, saving space.

[0038] In this embodiment, Figure 6 As shown, the telescopic rod 4 includes a connector, at least one single-section rod 403, and a handle 404, wherein one end of the connector is connected to the steel ring 3, and the other end is threadedly connected to the single-section rod 403, and the other end of the single-section rod 403 is threadedly connected to the handle 404. The outer surface of the handle 404 is configured to be a non-slip curved structure to facilitate the operator to hold it, and non-slip particles are arranged on the outer surface. The connector is used to connect to the sieve bag 2 through the steel ring 3, and the handle 404 is used for the operator to hold the device. The single-section rod 403 can be configured as a hollow tubular structure, one end of which is provided with an internal thread and the other end is provided with an external thread, and multiple single-section rods 403 can be arbitrarily combined through the self-contained threads. Multiple single-section rods 403 are provided, and the length of the telescopic rod 4 can be adjusted according to the needs of sampling through the threaded connection on the multiple single-section rods 403, thereby increasing the applicability of the device.

[0039] In this embodiment, Figure 1 As shown, the connector is a straight connector 402, one end of which is threadedly connected to the single-section rod 403, and the other end of the straight connector 402 is provided with an internal thread, and the internal thread of the other end of the straight connector 402 is connected to the external thread on the steel ring 3. This connection method is suitable for cleaning samples when sampling and when the operator is not high from the water surface.

[0040] Embodiment 2:

[0041] like Figure 2 to Figure 6As shown, a cleaning device suitable for collecting benthic organisms on site comprises a sealing sieve cover 1, a steel ring 3, a sieve bag 2, and a telescopic rod 4. The sealing sieve cover 1 is arranged above the steel ring 3 and fastened to the outer side of the steel ring 3; the telescopic rod 4 is connected to the steel ring 3 through a connecting piece; the sieve bag 2 is closed at one end and has an opening at the other end, and the open end of the sieve bag 2 is connected to the steel ring 3. The sieve bag 2 is arranged in an inverted bell shape and has a mesh structure. The sieve bag 2 of different meshes can be replaced according to the type of sample to be sampled.

[0042] When using the device to collect benthic biological samples, open the sealing and screening cover 1, hold the telescopic rod 4 to collect the benthic organisms; when cleaning the collected benthic biological samples, install the sealing and screening cover 1, place the sieve bag 2 in water, hold the telescopic rod 4, and shake the sieve bag 2 in the water, so that the sampled biological samples can be washed with water, which is simple and convenient to clean and does not pollute the environment.

[0043] Based on the above technical solution, the present invention can also be improved as follows.

[0044] In this embodiment, Figure 5 As shown, the sieve cover 1 includes a screen 101 and an outer frame 102, and the outer frame 102 is an annular structure. The outer frame 102 fixes and presses the screen 101 on the steel ring 3. A groove is provided on the inner side of the outer frame 102, and the groove matches the shape of the steel ring 3. When the outer frame 102 is installed in place, the groove clamps the steel ring 3. The screen 101 is a screen silk commonly used for cleaning benthic organisms. Because the screen silk material is very soft and difficult to shape, in this embodiment, the screen silk is cut to the size of the outer frame 102, and the outer edge of the cut screen silk is dipped in glue. The screen silk after the dip in glue treatment maintains its own flexibility. At the same time, because the glue on the outer edge shapes it, even after folding, the screen silk can still maintain the same shape as the outer frame 102 when it is unfolded. The sieve cover 1 can be disassembled into the outer frame 102 and the screen 101, which saves space and is convenient to carry. The screen is a consumable and is easy to replace after being damaged.

[0045] In this embodiment, the outer frame 102 is formed by combining two frame sections, and the two frame sections are connected by buckles 103. The two frame sections are combined to form the outer frame 102, which is connected by two buckles 103, and the connection is reliable, easy to disassemble, and can be folded when not in use, easy to carry and save space.

[0046] In this embodiment, two handles 104 are welded on the outer frame 102, and the two handles 104 are symmetrically arranged on the outer frame 102. When the sampled samples are cleaned, the arrangement of the two handles 104 enables the staff to extract the samples more conveniently and smoothly, and prevents the telescopic rod from rotating, which makes it inconvenient to extract the samples.

[0047] In this embodiment, Figure 3As shown, the open end of the sieve bag 2 is provided with a nylon buckle 201, and the open end of the sieve bag 2 is fixedly connected to the steel ring 3 through the nylon buckle 201. The setting of the nylon buckle 201 enables the sieve bag 2 to be reliably and firmly fixed on the steel ring 3, and when the device is not in use or the sieve bag 2 is damaged and needs to be replaced, the sieve bag 2 can be conveniently and quickly disassembled and assembled.

[0048] In this embodiment, Figure 3 As shown, the closed end of the sieve pocket 2 is provided with a closed zipper 202. When the sample is cleaned, it is necessary to take the sample out. The closed zipper 202 at the bottom of the sieve pocket 2 is set so that the closed zipper 202 can be directly opened when sampling, and the sample can be put into the sealed bag, which is convenient and simple.

[0049] In this embodiment, Figure 4 As shown, the steel ring 3 is an annular steel bar, and the joints at both ends of the steel bar are bent and face away from the center of the steel ring 3. The joints at both ends cooperate with each other to form a cylindrical steel ring joint 302, and the outer surface of the steel ring joint 302 is provided with an external thread. The external thread on the outer surface of the steel ring joint 302 can be threadedly connected with the telescopic rod 4, and the connection is reliable. This connection method is convenient for collecting underwater samples. When the joints at both ends of the annular steel bar are not connected to the telescopic rod 4, a nut 303 can be used to fix the two joints to increase the firmness of the device during use.

[0050] According to the need of carrying, the annular steel bar can be configured as a combination of multiple arc-shaped steel bars, the connection between adjacent arc-shaped steel bars is configured as a flat structure, and through holes are provided at the connection between adjacent steel bars, and screws 304 pass through the through holes to connect adjacent arc-shaped steel bars. When the device is not in use, the screws 304 are removed, and the multiple arc-shaped steel bars can be stored in sections, saving space.

[0051] In this embodiment, Figure 6 As shown, the telescopic rod 4 includes a connector, at least one single-section rod 403, and a handle 404, wherein one end of the connector is connected to the steel ring 3, and the other end is threadedly connected to the single-section rod 403, and the other end of the single-section rod 403 is threadedly connected to the handle 404. The outer surface of the handle 404 is arranged to be a non-slip curved structure to facilitate the operator to hold it, and non-slip particles are arranged on the outer surface. The connector is used to connect to the sieve bag 2 through the steel ring 3, and the handle 404 is used for the operator to hold the device. The single-section rod 403 can be arranged to be a hollow tubular shape, with an internal thread at one end and an external thread at the other end, and multiple single-section rods 403 can be arbitrarily combined by self-contained threads. Multiple single-section rods 403 are arranged, and the length of the telescopic rod 4 can be adjusted according to the needs of sampling through the threaded connection on multiple single-section rods 403, thereby increasing the applicability of the device.

[0052] In this embodiment, Figure 2As shown, the connector is a hook-shaped connector 401, one end of which is threadedly connected to the single-section rod 403, and the other end of the hook-shaped connector 401 is set as a hook. At least three rings 301 are provided on the steel ring 3, and the hook is connected to the ring 301 on the steel ring 3 through a flexible connector. In this embodiment, an ear rope 5 is used to connect the hook and the ring 301. This connection method is suitable for when the operator is at a high distance from the water surface, and it is inconvenient to use the straight connector 402 to clean the sample. This connection method makes the telescopic rod 4 and the sieve bag 2 have a flexible connection, which is more flexible.

[0053] The device has a simple structure, ingenious design, and easy operation, which can reduce labor intensity. It can be disassembled and folded for easy carrying. It can be used to clean benthic organisms and is suitable for collecting benthic organisms in shallow water bodies such as rivers. It is a sampling tool suitable for field aquatic organism monitoring. When sampling benthic organisms through the device, the sealing and screening cover is opened, and the telescopic rod is connected to the steel ring with a straight connector. The distance from the device to the water bottom is adjusted by adding or reducing the number of single-section rods on the telescopic rod, which makes sampling convenient. When cleaning the collected benthic organisms, the sealing and screening cover is assembled, the sieve pocket part of the device is placed in the water, and the device is dragged and washed by the power of the forward movement of the ship or the operator holding the handle, so that the sample in the sieve pocket is cleaned, and the cleaning is more thorough, quick, time-saving and labor-saving, and the cleaning process does not harm the biological sample. When the hull is high and the operator is too high from the water surface, a hook-shaped connector can be used to connect the telescopic rod and the steel ring, so that the telescopic rod and the sieve pocket are flexibly connected. This connection method is not limited by the angle between the operator and the water surface, which improves the applicability of the device for cleaning samples. When the sample is cleaned, the closed zipper can be opened to collect the sample, which is easy to operate, clean and hygienic. When the device is not in use, the device can be disassembled and folded to save space and be easy to carry.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cleaning device suitable for collecting benthic organisms on site, characterized in that: It comprises a sieve sealing cover (1), a steel ring (3), a sieve pocket (2), and a telescopic rod (4), wherein the sieve sealing cover (1) is arranged above the steel ring (3) and is detachably fastened to the outer side of the steel ring (3); The sieve sealing cover (1) comprises a sieve (101) and an outer frame (102); the outer frame (102) is an annular structure; the sieve (101) is flexible; the outer frame (102) fixes and presses the sieve (101) onto the steel ring (3); the outer frame (102) is formed by combining two sections of frame bodies; the two sections of the frame bodies are connected by a buckle (103); The steel ring (3) is an annular steel bar, which comprises a plurality of arc-shaped steel bars connected end to end in sequence, and adjacent arc-shaped steel bars are detachably connected; The joints at both ends of the annular steel bar are bent and face in a direction away from the center of the steel ring (3), and the joints at both ends cooperate with each other to form a cylinder, and the outer surface of the cylinder is provided with an external thread; The telescopic rod (4) is threadedly connected to the cylinder of the steel ring (3) via a connecting piece; one end of the sieve bag (2) is closed and the other end is provided with an opening, the open end of the sieve bag (2) is connected to the steel ring (3), and the closed end of the sieve bag (2) is provided with a closed zipper (202).

2. A cleaning device suitable for collecting benthic organisms on site according to claim 1, characterized in that: Two handles (104) are welded to the outer frame (102), and the two handles (104) are symmetrically arranged on the outer frame (102).

3. A cleaning device suitable for collecting benthic organisms on site according to claim 1, characterized in that: The open end of the sieve pocket (2) is provided with a nylon buckle (201), and the open end of the sieve pocket (2) is fixedly connected to the steel ring (3) via the nylon buckle (201).

4. A cleaning device suitable for collecting benthic organisms on site according to claim 1, characterized in that: The telescopic rod (4) comprises a connecting head, at least one single-section rod (403), and a handle (404); one end of the connecting head is connected to the steel ring (3), and the other end is threadedly connected to the single-section rod (403); and the other end of the single-section rod (403) is threadedly connected to the handle (404).

5. A cleaning device suitable for collecting benthic organisms on site according to claim 4, characterized in that: The connector is a straight connector (402), one end of which is threadedly connected to the single-section rod (403), and the other end of which is provided with an internal thread, and the internal thread at the other end of which is connected to the external thread on the steel ring (3).

6. A cleaning device suitable for collecting benthic organisms on site according to claim 4, characterized in that: The connecting head is a hook-shaped connecting head (401), one end of which is threadedly connected to the single-section rod (403), and the other end of which is configured as a curved hook. The steel ring (3) is provided with at least three lifting rings (301), and the curved hook is connected to the lifting rings (301) on the steel ring (3) via a flexible connecting piece.

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