A sediment sampler and method

Abstract

The present invention discloses a bottom sediment sampler, which includes a mud sampling plate, with side panels provided on both sides of the front end of the mud sampling plate; a cylindrical mud sampling box provided on the inner side of the mud sampling plate, the mud sampling box being made of a transparent material, with an open lower end and a sealed upper end; a hollow mud sampling rod connected to the upper end of the mud sampling plate, with a handheld portion provided at the end of the mud sampling rod; a control box provided on the back of the mud sampling plate, with a first reel and a second reel provided at the upper and lower ends of the control box, respectively, the second reel being wound with a PP woven material for sealing the lower end of the mud sampling box after mud sampling is completed; a traction rope provided at both ends of a support block, the traction ropes at both ends passing around the mud sampling box away from the side of the mud sampling plate and the upper end of the traction rope being wound around the first reel. The bottom sediment sampler is simple and convenient to use, and underwater workers can obtain high-quality samples without complicated operations. The workers do not need to touch the mud bottom underwater, which effectively reduces the safety of the operation. The mud sampling plate and the mud sampling rod are detachable and easy to assemble.

Description

Technical Field

[0001] The present invention relates to the technical field of water ecological environment research, and in particular to a sediment sampler and method. Background Art

[0002] Sediment collectors are currently widely used in field experiments, providing researchers with sample collection guarantees for studying the physical and chemical properties of sediments, the types and concentrations of pollutants contained, and microbial diversity. Sediment collection devices are mainly divided into two categories based on their collection principles: grabbing type and drilling type. The grabbing type sampler is simple to operate and easy to carry. The characteristics of the longitudinal profile of the sediment were not taken into consideration during its design, which to a certain extent destroyed the integrity of the longitudinal profile of the sediment sample, limiting its scope of application. The drilling type sediment sampler can collect columnar sediment samples, but the existing sediment samplers are not only difficult to drill, but also difficult to seal when taking underwater samples. The samples taken out are easily lost under the erosion of water. The actual depth of sediment that can be collected is difficult to estimate, and it is difficult to accurately stratify the collected samples. Summary of the Invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a sediment sampler and method that can effectively retain the original soil layer for sampling.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] Provided is a bottom mud sampler, comprising a mud sampling plate, the mud sampling plate being an arc-shaped plate structure, with side plates provided on both sides of the front end of the mud sampling plate, both of which are arc-shaped plate structures having the same curvature as the mud sampling plate; the two side plates are bent toward the inside of the mud sampling plate relative to each other, and the length of the side plates is half the length of the mud sampling plate; a cylindrical mud sampling box is provided on the inside of the mud sampling plate, the mud sampling box is made of a transparent material, the lower end of the mud sampling box is open and the upper end is sealed, the radius of the mud sampling box is smaller than the radius of the mud sampling plate, and the lower end of the mud sampling box is connected to the tail end of the side plate; the upper end of the mud sampling plate is connected to a hollow mud sampling rod, the end of the mud sampling rod is provided with a handheld portion; the mud sampling plate and the side plate are integrally formed, and the ends of the mud sampling plate and the side plate are both configured as blades for cutting bottom mud;

[0006] A control box is provided on the back of the mud collecting plate, and a threaded hole is provided on the control box. The mud collecting box is connected to the threaded hole through screws that penetrate the side of the mud collecting box and the mud collecting plate; a first reel and a second reel are provided at the upper and lower ends of the control box respectively, and the first reel and the second reel are driven to rotate by reel motors respectively, and a PP braided material for sealing the lower end of the mud collecting box after mud collection is completed is wound on the second reel, and a support block is provided laterally at the end of the PP braided material, and a traction rope is provided at both ends of the support block, and the width of the PP braided material is greater than the diameter of the mud collecting box, and a blade for transversely cutting the bottom mud at the lower end of the mud collecting box is provided on the support block;

[0007] The mud collecting plate is provided with a first strip hole for the blade and the PP braided material to pass through. The first strip hole is arranged between the mud collecting box and the rear end of the side plate. The control box is provided with a second strip hole for the PP braided material to pass through. The size of the second strip hole is smaller than that of the support block. When mud is not collected in the mud collecting box, the second reel winds up the PP braided material to block the second strip hole with the support block.

[0008] The traction ropes at both ends pass around the mud box away from the mud collecting plate and the upper ends of the traction ropes are wound on the first drum. The mud collecting plate above the mud box is provided with a first through hole for the traction rope to pass through, and the control box is provided with a second through hole for the traction rope to pass through.

[0009] Furthermore, spiral wire grooves are respectively provided on the surfaces on both sides of the mud collecting box, which extend from the upper end of the mud collecting box away from the mud collecting plate to the position of the first strip hole. When the PP braided material is in a static state, two traction ropes are respectively arranged in the wire grooves on both sides.

[0010] Furthermore, soft rubber sealing strips are provided at the upper and lower ends of the second strip-shaped opening, and the rubber sealing strips are in contact with the upper and lower surfaces of the PP woven material; the rubber sealing strip is connected to the second strip-shaped opening through a number of S-shaped rubber strips, and the several S-shaped rubber strips provide elasticity for the rubber sealing strip, and the several S-shaped rubber strips between the rubber sealing strip and the second strip-shaped opening are encapsulated by rubber blocks.

[0011] Furthermore, a K-type sealing ring is provided on the second through hole, and the inner ring of the K-type sealing ring is placed toward the inner side of the control box; the traction rope includes a traction wire, the traction wire is wrapped with a rubber layer, and the traction rope passes through the inner ring of the K-type sealing ring.

[0012] Furthermore, a connecting sleeve is provided at the upper end of the mud collecting plate, the connecting sleeve is integrally formed with the mud collecting plate, and an expansion opening is provided on the connecting sleeve. The mud collecting rod is threadedly connected to the connecting sleeve, a pin is provided on the side of the connecting sleeve, and a pin hole for inserting the pin is provided at the end of the mud collecting rod. A spring is provided between the pin hole and the connecting sleeve, and the spring is sleeved on the pin.

[0013] Furthermore, a control button is provided on the handheld portion, and the control button is electrically connected to the controller in the control box via a cable, and the cable is provided in the mud sampling rod.

[0014] Furthermore, the lower edge of the mud taking box is also configured to be blade-shaped.

[0015] 8. Provide a method for sediment sampling using the above-mentioned sediment sampler, which comprises the following steps:

[0016] S1: The staff holds the sampler to the predetermined underwater position, aligns the mud sampling plate with the bottom mud, and rotates the handheld part to rotate the mud sampling plate into the bottom mud;

[0017] S2: During the rotation process, the blade cuts the bottom mud, forming a columnar bottom mud sample between the two side plates, and as the mud sampling plate rotates, the columnar bottom mud sample enters the mud sampling box;

[0018] S3: When the predetermined mud layer is reached, the worker presses the control button on the handheld unit, and the drum motor drives the first drum to wind the traction rope, while the second drum releases the PP braided material. During this process, the blade on the support block cuts the mud at the bottom of the mud box;

[0019] S4: After the blade finishes cutting, the PP woven material is pulled to seal the mud sampling box. The control button is pressed, the drum motor stops and remains stopped, and the bottom mud sampling is completed;

[0020] S5: The staff took the sampler out of the water, and the excess water in the mud box leaked out from the PP woven material;

[0021] S6: The staff presses the control button, and the drum motor drives the first drum to rotate and wind the PP woven material. The first drum releases the traction rope, the support plate returns to the initial position to seal the second strip opening, and the traction rope is completely returned to the wire trough, waiting for the next sediment sample collection.

[0022] The beneficial effects of the present invention are as follows: this solution is used to collect underwater sediment samples, facilitating comprehensive research on the environment and soil quality of underwater sludge and soil layers. By inserting the mud sampling plate into the mud layer, the mud layer is collected into the mud sampling box. The transparent mud sampling box can observe the amount of mud collected. When the target mud layer is reached, the blade on the support block can be driven to cut the mud layer below the mud sampling box. After the cutting is completed, the PP woven material realizes the packaging of the lower end of the mud sampling box, preventing the samples in the mud sampling box from being taken out during the process of removing the mud sampling plate from the mud layer, and preventing the samples in the mud sampling box from being washed away by water, ensuring that the samples in the mud sampling box reflect the most realistic underwater mud layer structure. The sealing process of the mud sampling box is carried out automatically, reducing the complexity of the staff's underwater work.

[0023] During the pulling and retraction process, the rubber sealing strip squeezes the PP material, sealing the interior of the control box. Several S-shaped rubber strips between the rubber sealing strip and the second strip opening increase the rubber sealing strip's rigidity while also maintaining its toughness. The strip deforms to the uneven surface of the PP material, ensuring a tight seal. A K-type sealing ring seals the interior of the control box during the pulling and retraction process. With its inner ring facing inward, it follows the direction of the pulling rope and effectively scrapes away dirt and water from the rope as it enters the control box, preventing it from being drawn into the box. The K-type sealing ring also prevents deformation from compression.

[0024] The sediment sampler of the present invention is simple and convenient to use. Underwater workers can obtain high-quality samples without complicated operations. Workers do not need to touch the mud bottom underwater, which effectively reduces the safety of operation. The mud sampling plate and mud sampling rod are detachable and easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the main view of the sediment sampler.

[0026] Figure 2 This is the main view of the mud mining board.

[0027] Figure 3 This is a side view of the mud mining board.

[0028] Figure 4 This is the structural diagram of the second strip mouth.

[0029] Figure 5 This is a structural diagram of the support block.

[0030] Figure 6 2 is a structural diagram of the second through hole.

[0031] Among them, 1. Handle part, 2. Mud collecting rod, 3. Connecting sleeve, 4. Mud collecting box, 5. Side panel, 6. Mud collecting plate, 7. Pin, 8. First strip hole, 9. Wire groove, 10. First through hole, 11. Extended opening, 12. Inclined surface, 13. Control box, 14. First reel, 15. Second reel, 16. Threaded hole, 17. Traction rope, 18. PP braided material, 19. Rubber strip, 20. Rubber block, 21. Second strip hole, 22. K-type sealing ring, 23. Rubber layer, 24. Traction wire, 25. Blade, 26. Support block. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all inventions and creations utilizing the concepts of the present invention are protected.

[0033] like Figures 1-6As shown, the bottom mud sampler of this scheme includes a mud sampling plate 6, which is an arc-shaped plate structure. Side panels 5 are provided on both sides of the front end of the mud sampling plate 6, and the two side panels 5 are both arc-shaped plate structures with the same curvature as the mud sampling plate 6; the two side panels 5 are relatively bent toward the inside of the mud sampling plate 6, and the length of the side panels 5 is half the length of the mud sampling plate 6. A cylindrical mud sampling box 4 is provided on the inside of the mud sampling plate 6, and the mud sampling box 4 is made of transparent material, with an open lower end and a sealed upper end. The radius of the mud sampling box 4 is smaller than the radius of the mud sampling plate 6, and the lower end of the mud sampling box 4 is connected to the tail of the side panel 5; the upper end of the mud sampling plate 6 is connected to a hollow mud sampling rod 2, and the end of the mud sampling rod 2 is provided with a hand-held part 1; the mud sampling plate 6 and the side panel 5 are integrally formed, and the ends of the mud sampling plate 6 and the side panel 5 are both configured as blades for cutting the bottom mud. During the sampling process, the staff rotates and cuts the soil.

[0034] A control box 13 is provided on the back of the mud collecting plate 6, and a threaded hole 16 is provided on the control box 13. The mud collecting box 4 is connected to the threaded hole 16 by screws passing through the side of the mud collecting box 4 and the mud collecting plate 6, so as to realize the fixed installation of the control box 13 and the mud collecting box 4; the upper and lower ends of the control box 13 are respectively provided with a first reel 14 and a second reel 15, which are driven to rotate by reel motors respectively, and a PP braided material 18 for sealing the lower end of the mud collecting box 4 after mud collection is completed is wound on the second reel 15, and a support block 26 is laterally provided at the end of the PP braided material 18, and a traction rope 17 is provided at both ends of the support block 26. The width of the PP braided material 18 is greater than the diameter of the mud collecting box 4 to ensure that the lower end of the mud collecting box 4 can be fully covered, and a blade 25 for transversely cutting the bottom mud at the lower end of the mud collecting box 4 is provided on the support block 26.

[0035] A first strip hole 8 is provided on the mud collecting plate 6 for the blade 25 and the PP woven material 18 to pass through. The first strip hole 8 is arranged between the mud collecting box 4 and the tail end of the side plate 5. A second strip hole 21 is provided on the control box 13 for the PP woven material 18 to pass through. The size of the second strip hole 21 is smaller than the size of the support block 26. When the PP woven material 18 is wound, the support block 26 can just be blocked by the second strip hole 21; when the mud is not collected in the mud collecting box 4, the second reel 15 winds up the PP woven material 18 to make the support block 26 block the second strip hole 21.

[0036] The traction ropes 17 at both ends are passed around the mud collecting box 4 away from the mud collecting plate 6, and the upper ends of the traction ropes 17 are wound around the first reel 14. The mud collecting plate 6 above the mud collecting box 4 has a first through hole 10 for the traction ropes 17 to pass through, and the control box 13 has a second through hole for the traction ropes 17 to pass through. The lower end of the control box 13 is provided with an inclined surface 12 that mates with the lower end of the mud collecting plate, making it easier to insert into the mud layer.

[0037] This solution is used to collect underwater sediment samples, facilitating comprehensive research on the environment and soil quality of underwater sludge and soil layers. By inserting the mud sampling plate 6 into the mud layer, the mud layer is collected in the mud sampling box 4. The transparent mud sampling box 4 can observe the amount of mud collected. When the target mud layer is reached, the blade 25 on the support block 26 can be driven to cut the mud layer below the mud sampling box 4. After the cutting is completed, the PP woven material 18 realizes the sealing of the lower end of the mud sampling box 4, preventing the samples in the mud sampling box 4 from being taken out during the removal of the mud sampling plate 6 from the mud layer, and preventing the samples in the mud sampling box 4 from being washed away by water, ensuring that the samples in the mud sampling box 4 reflect the most realistic underwater mud layer structure. The sealing process of the mud sampling box 4 is carried out automatically, reducing the complexity of the staff's underwater work.

[0038] The surfaces on both sides of the mud collecting box 4 are respectively provided with spiral wire grooves 9, which extend from the upper end of the mud collecting box 4 away from the mud collecting plate 6 to the position of the first strip hole 8. When the PP braided material 18 is in a stationary state, the two traction ropes 17 are respectively arranged in the wire grooves 9 on both sides. During the downward movement of the mud collecting box 4, the PP braided material 18 is stationary, and the two traction ropes 17 are both arranged in the wire grooves 9 on both sides, so as to prevent the two traction ropes 17 from passing through the lower end of the mud collecting box 4 and obstructing the traction ropes 17 from blocking the mud layer from entering. When it is necessary to pull the PP braided material 18 to move, the traction rope 17 at the lower end gradually detaches from the wire groove 9 at the lower end during the cutting process of the blade 25, but the wire groove 9 at the upper end of the mud collecting box 4 can still restrain the traction rope 17, ensuring that the traction rope 17 can smoothly pull the PP braided material 18 to wrap around the lower end of the mud collecting box 4.

[0039] Soft rubber sealing strips are provided at the upper and lower ends of the second strip-shaped opening, and the rubber sealing strips are in contact with the upper and lower surfaces of the PP woven material 18; the rubber sealing strips are connected to the second strip-shaped opening through a plurality of S-shaped rubber strips 19, and the plurality of S-shaped rubber strips 19 provide elasticity for the rubber sealing strip. The plurality of S-shaped rubber strips 19 between the rubber sealing strip and the second strip-shaped opening are encapsulated by a rubber block 20.

[0040] A K-type sealing ring 22 is provided on the second through hole, and the inner ring of the K-type sealing ring 22 is placed toward the inner side of the control box 13 ; the traction rope 17 includes a traction wire 24 , and the traction wire 24 is wrapped with a rubber layer 23 , and the traction rope 17 passes through the inner ring of the K-type sealing ring 22 .

[0041] During the pulling and pulling process of the PP braided material 18, the rubber sealing strip squeezes the PP braided material 18 to achieve a seal inside the control box 13. Several S-shaped rubber strips 19 between the rubber sealing strip and the second strip opening increase the rigidity of the rubber sealing strip while also providing sufficient toughness. The rubber sealing strip can deform according to the concave and convex shapes of the PP braided material 18 to ensure sealing. The K-type sealing ring 22 is used to seal the interior of the control box 13 during the pulling and pulling process of the traction rope 17. The inner ring of the K-type sealing ring 22 faces the interior of the control box 13 and follows the direction of the traction rope 17. As the traction rope 17 enters the control box 13, it effectively scrapes away dirt and water on the traction rope 17 to prevent it from being drawn into the control box 13. At the same time, the K-type sealing ring 22 will not be squeezed and deformed.

[0042] The upper end of the mud collecting plate 6 is provided with a connecting sleeve 3. The connecting sleeve 3 and the mud collecting plate 6 are integrally formed and provided with an expansion opening 11. The mud collecting rod 2 is threadedly connected to the connecting sleeve 3. The side of the connecting sleeve 3 is provided with a pin 7. The end of the mud collecting rod 2 is provided with a pin hole for inserting the pin 7. A spring is provided between the pin hole and the connecting sleeve 3, and the spring is sleeved on the pin 7. After the mud collecting rod 2 is assembled, the pin 7 is inserted into the pin hole to limit the position, ensuring a stable connection.

[0043] The handheld portion 1 is provided with a control button, which is electrically connected to the controller in the control box 13 via a cable, which is provided in the mud sampling rod 2; the lower edge of the mud sampling box 4 is also provided in a blade shape.

[0044] The method for sampling sediment using the sediment sampler comprises the following steps:

[0045] S1: The staff holds the sampler to the predetermined underwater position, aligns the mud sampling plate 6 with the bottom mud, and rotates the handheld part 1 to rotate the mud sampling plate 6 into the bottom mud;

[0046] S2: During the rotation process, the blade cuts the bottom mud, forming a columnar bottom mud sample between the two side plates 5, and as the mud sampling plate 6 is rotated, the columnar bottom mud sample enters the mud sampling box 4;

[0047] S3: When the predetermined mud layer is reached, the worker presses the control button on the handheld part 1, and the drum motor drives the first drum 14 to wind the traction rope 17, and the second drum 15 unwinds the PP braided material 18. During this process, the blade 25 on the support block 26 cuts the mud at the lower end of the mud box 4;

[0048] S4: After the blade 25 has finished cutting, the PP braided material 18 is pulled to seal the mud sampling box 4. The control button is pressed, the drum motor stops and remains stopped, and the bottom mud sampling is completed;

[0049] S5: The staff takes the sampler out of the water, and the excess water in the mud box 4 leaks out from the PP woven material 18;

[0050] S6: The staff presses the control button, and the drum motor drives the first drum 14 to rotate and wind the PP woven material 18. The first drum 14 releases the traction rope 17, and the support plate returns to the initial position to block the second strip opening, and the traction rope 17 is completely returned to the wire groove 9, waiting for the next sediment sample collection.

[0051] The bottom mud sampler of the present invention is simple and convenient to use. Underwater workers can obtain high-quality samples without complicated operations. Workers do not need to touch the mud bottom underwater, which effectively reduces the safety of operation. The mud sampling plate 6 and the mud sampling rod 2 are detachable and easy to assemble.

Claims

1. A sediment sampler, characterized in that: The mud collecting plate comprises a mud collecting plate, the mud collecting plate is an arc-shaped plate structure, side plates are provided on both sides of the front end of the mud collecting plate, and the two side plates are both arc-shaped plate structures with the same curvature as the mud collecting plate; the two side plates are relatively bent toward the inner side of the mud collecting plate, and the length of the side plates is half the length of the mud collecting plate; a cylindrical mud collecting box is provided on the inner side of the mud collecting plate, the mud collecting box is made of transparent material, the lower end of the mud collecting box is open and the upper end is sealed, the radius of the mud collecting box is smaller than the radius of the mud collecting plate, and the lower end of the mud collecting box is connected to the tail of the side plate; the upper end of the mud collecting plate is connected to a hollow mud collecting rod, and the end of the mud collecting rod is provided with a hand-held part; the mud collecting plate and the side plate are integrally formed, and the ends of the mud collecting plate and the side plate are both configured as blades for cutting bottom mud; A control box is provided on the back of the mud collecting plate, and a threaded hole is provided on the control box. The mud collecting box is connected to the threaded hole by screws that penetrate the side of the mud collecting box and the mud collecting plate; a first reel and a second reel are respectively provided at the upper and lower ends of the control box, and the first reel and the second reel are respectively driven to rotate by reel motors, and a PP braided material for sealing the lower end of the mud collecting box after mud collection is completed is wound on the second reel, and a support block is transversely provided at the end of the PP braided material, and a traction rope is provided at both ends of the support block, the width of the PP braided material is greater than the diameter of the mud collecting box, and a blade for transversely cutting the bottom mud at the lower end of the mud collecting box is provided on the support block; The mud collecting plate is provided with a first strip hole for the blade and the PP braided material to pass through, the first strip hole being arranged between the mud collecting box and the rear end of the side plate, and the control box is provided with a second strip hole for the PP braided material to pass through, the size of the second strip hole being smaller than the size of the support block; when mud is not collected in the mud collecting box, the second reel winds up the PP braided material to block the second strip hole with the support block; The traction ropes at both ends are passed around the mud box away from the mud collecting plate and the upper end of the traction rope is wound on the first drum. The mud collecting plate above the mud box is provided with a first through hole for the traction rope to pass through, and the control box is provided with a second through hole for the traction rope to pass through. Soft rubber sealing strips are provided at the upper and lower ends of the second strip-shaped hole, and the rubber sealing strips are in contact with the upper and lower surfaces of the PP woven material; the rubber sealing strips are connected to the second strip-shaped hole via a plurality of S-shaped rubber strips, which provide elasticity for the rubber sealing strips, and the plurality of S-shaped rubber strips between the rubber sealing strip and the second strip-shaped hole are encapsulated by rubber blocks; A K-type sealing ring is provided on the second through hole, and the inner ring of the K-type sealing ring is placed toward the inner side of the control box; the traction rope includes a traction wire, the traction wire is wrapped with a rubber layer, and the traction rope passes through the inner ring of the K-type sealing ring.

2. The sediment sampler according to claim 1, characterized in that: The surfaces on both sides of the mud collecting box are respectively provided with spiral grooves, which extend from the upper end of the mud collecting box away from the mud collecting plate to the position of the first strip hole. When the PP braided material is in a static state, the two traction ropes are respectively arranged in the grooves on both sides.

3. The sediment sampler according to claim 1, characterized in that: A connecting sleeve is provided at the upper end of the mud collecting plate. The connecting sleeve is integrally formed with the mud collecting plate and an expansion opening is provided on the connecting sleeve. The mud collecting rod is threadedly connected to the connecting sleeve. A pin is provided on the side of the connecting sleeve. A pin hole for inserting the pin is provided at the end of the mud collecting rod. A spring is provided between the pin hole and the connecting sleeve, and the spring is sleeved on the pin.

4. The sediment sampler according to claim 1, characterized in that: The handheld portion is provided with a control button, and the control button is electrically connected to a controller in a control box via a cable, and the cable is provided in the mud sampling rod.

5. The sediment sampler according to claim 1, characterized in that: The lower edge of the mud collecting box is also configured to be blade-shaped.

6. A method for sampling sediment using the sediment sampler according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: The staff holds the sampler to the predetermined underwater position, aligns the mud sampling plate with the bottom mud, and rotates the handheld part to rotate the mud sampling plate into the bottom mud; S2: During the rotation process, the blade cuts the bottom mud, forming a columnar bottom mud sample between the two side plates, and as the mud sampling plate rotates, the columnar bottom mud sample enters the mud sampling box; S3: When the predetermined mud layer is reached, the worker presses the control button on the handheld unit, and the drum motor drives the first drum to wind the traction rope, while the second drum releases the PP braided material. During this process, the blade on the support block cuts the mud at the bottom of the mud box; S4: After the blade finishes cutting, the PP woven material is pulled to seal the mud sampling box. The control button is pressed, the drum motor stops and remains stopped, and the bottom mud sampling is completed; S5: The staff took the sampler out of the water, and the excess water in the mud box leaked out from the PP woven material; S6: The staff presses the control button, and the drum motor drives the first drum to rotate and wind the PP woven material. The first drum releases the traction rope, the support plate returns to the initial position to seal the second strip hole, and the traction rope is completely returned to the wire groove, waiting for the next sediment sample collection.

Images