Surface sediment mud sampler for monitoring fishery environment

Abstract

The invention discloses a surface sediment sampler for fishery environment monitoring, and relates to the technical field of sediment sampling, the surface sediment sampler comprises a sampling pipe, one end of the sampling pipe is provided with a mounting plate, one side of the mounting plate is fixedly provided with a connector, the sampling pipe is in threaded connection with the connector, one side of the mounting plate is fixedly provided with a hollow rod, and the hollow rod is in threaded connection with the connector. A hollow rod is arranged in the mounting plate, a fixing plate is fixedly installed at the end, away from the mounting plate, of the hollow rod, grips are symmetrically installed on the two sides of the fixing plate, the movable rod is slidably connected into the mounting plate and the connector, the movable rod is slidably connected with the hollow rod, and a handle is fixedly installed on one side of the movable rod; pistons are fixedly mounted at the ends, away from the mounting plate, of the moving rods; by arranging the sampling pipe, when the sampling pipe is used for sampling sediment in a shallow water area and encounters a plant root system, the plant root system can be conveniently cut off, the sampling pipe is prevented from being inserted too difficultly, a worker can conveniently operate the sampling pipe, and convenience and practicability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sediment sampling, and specifically to a surface sediment sampler for fishery environment monitoring. Background Art

[0002] Sediment sampling tools can generally be divided into grab samplers, columnar samplers or drilling devices. Among them, columnar samplers are generally used for surface sediment sampling in shallow waters. In fishery environment monitoring, it is necessary to sample the surface sediment in shallow waters to understand the quality of the sediment and monitor the changing trend of the fishery environment.

[0003] For example, a shallow water surface sediment sampler with the publication number CN115950677A can make the sampling tube automatically insert into or withdraw from the sediment through the cooperation of a ball screw spline shaft, a ball screw nut and a connecting sleeve, making the sampling of the sampling tube very convenient and labor-saving. However, in actual use, during the process of sampling sediment, the sampling is carried out by the descent of the sampling tube. There will be certain aquatic plant roots in the silt during the sampling process of the sampling tube, and the sampling tube will be blocked by the roots during the insertion process, making the sampling of the sampling tube laborious and inconvenient for the staff to operate, reducing the sampling work efficiency. Moreover, when sampling with a columnar sampler, the staff needs to press one hand on the grip to push the sampling tube to move, and at the same time, also push the handle to make the piston move so that the sample can enter the sampling tube. During the operation process, not only the sampling tube needs to be pressed but also the handle needs to be moved, and the operation is relatively inconvenient, with certain usage defects.

[0004] Therefore, we propose a surface sediment sampler for fishery environment monitoring to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide a surface sediment sampler for fishery environment monitoring to solve the problem that there will be certain aquatic plant roots in the silt during the sampling process of the sampling tube in the above-mentioned background art, and the sampling tube will be blocked by the roots during the insertion process, making the sampling of the sampling tube laborious and inconvenient for the staff to operate, reducing the sampling work efficiency.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A surface sediment sampler for fishery environment monitoring, including a sampling tube, one end of the sampling tube is provided with a mounting plate, and a connecting head is fixedly installed on one side of the mounting plate, and the sampling tube is threadedly connected to the connecting head. At the same time, a hollow rod is fixedly installed on one side of the mounting plate, and a fixing plate is fixedly installed at the end of the hollow rod away from the mounting plate, and grips are symmetrically installed on both sides of the fixing plate;

[0007] Further included are:

[0008] The moving rod is slidably connected inside the mounting plate and the connecting head. The moving rod is slidably connected with the hollow rod. One side of the moving rod is fixedly installed with a handle. One end of the moving rod away from the mounting plate is fixedly installed with a piston. At the same time, the other end of the sampling tube is threadedly connected with a mounting ring. One side of the mounting ring is provided with a rotating ring. One side of the rotating ring is fixedly installed with a circular cutter head. The other side of the rotating ring is provided with a blocking ball;

[0009] The control assembly is arranged outside the sampling tube and on one side of the fixed plate. The control assembly includes a movable rod;

[0010] The movable rod is slidably connected inside one side of the fixed plate and the mounting plate. One end of the movable rod away from the fixed plate is fixedly installed with a steel cable. One end of the steel cable away from the movable rod is fixedly installed with a connecting block. The connecting block is fixedly connected with the rotating ring. At the same time, an annular groove is opened below the inside of the mounting ring. An annular rod is fixedly installed inside the annular groove.

[0011] Preferably, two movable sleeves are symmetrically slidably connected to the outside of the annular rod. Both movable sleeves are fixedly connected with the circular cutter head. At the same time, return springs are sleeved on one side of the two movable sleeves outside the annular rod. One end of the return spring is fixedly connected with the movable sleeve. The other end of the return spring is fixedly installed with a fixed block. The fixed block is fixedly connected with the annular rod.

[0012] By adopting the above technical solution, the rotation of the circular cutter head is limited, and the circular cutter head can automatically reset after rotation.

[0013] Preferably, support blocks are symmetrically installed on one side of the outside of the movable rod. Both support blocks are fixedly connected with the sampling tube. At the same time, telescopic springs are symmetrically sleeved on both sides of the mounting plate outside the movable rod. One end of the telescopic spring is fixedly connected with the mounting plate. The other end of the telescopic spring is fixedly installed with a mounting block. The mounting block is fixedly connected with the movable rod.

[0014] By adopting the above technical solution, the movable rod can automatically reset after moving.

[0015] Preferably, fixed rods are symmetrically installed on one side of both grips. Sliding rods are slidably connected to the outside of the two fixed rods. At the same time, tension springs are sleeved on one side of the sliding rods outside the two fixed rods. Both ends of the tension spring are fixedly connected with the sliding rod and the fixed rod respectively.

[0016] By adopting the above technical solution, the sliding rod can automatically reset after moving.

[0017] Preferably, mounting brackets are symmetrically installed on one side of the tops of both grips close to the fixing plate. A rotating rod is rotatably connected above the interiors of the two mounting brackets. Rotating gears are fixedly installed on the exteriors of the two rotating rods. Tooth plates are fixedly installed on the closer sides of the two sliding rods. The rotating gears are meshed with the tooth plates.

[0018] By adopting the above technical solution, the movement of the sliding rod can drive the rotation of the rotating rod.

[0019] Preferably, U-shaped rods are slidably connected to both sides inside one of the rotating rods. Support springs are symmetrically sleeved on both sides of the U-shaped rods. The two ends of the support springs are fixedly connected to the U-shaped rods and the rotating rods respectively. A connecting piece is rotatably connected to one side of the exterior of the U-shaped rod. The connecting piece is fixedly connected to the movable rod.

[0020] By adopting the above technical solution, the U-shaped rotation can drive the movement of the movable rod.

[0021] Preferably, a mounting rod is fixedly installed on one side of the fixing plate. A limiting rod is slidably connected above the interior of the mounting rod. A mounting spring is sleeved on one side of the exterior of the limiting rod. The two ends of the mounting spring are fixedly connected to the mounting rod and the limiting rod respectively. U-shaped frames are fixedly installed on both sides of the exterior of the other rotating rod. A pull rope is fixedly installed on the side of the limiting rod close to the fixing plate. The end of the pull rope away from the limiting rod is fixedly connected to the fixing plate.

[0022] By adopting the above technical solution, it is possible to prevent the movable rod from moving upward during the sampling process, avoiding difficulty in moving the movable rod again later.

[0023] Preferably, a support rod is slidably connected inside the fixing plate on the side of the mounting rod. The end of the support rod away from the fixing plate is fixedly installed with a positioning plate. A number of convex blocks are fixedly installed on one side of the positioning plate. L-shaped frames are symmetrically installed on one side of the bottom of one of the grips. A rotating shaft is rotatably connected to one side inside the two L-shaped frames.

[0024] By adopting the above technical solution, the insertion of the sampling tube can be limited.

[0025] Preferably, one end of the rotating shaft passes through one of the L-shaped frames and is fixedly installed with a runner. The runner is in close fit with the support rod. A winding member is fixedly installed between the two L-shaped frames on the exterior of the rotating shaft. A winding rope is fixedly installed on one side of the exterior of the winding member. The end of the winding rope away from the winding member is fixedly connected to the handle.

[0026] By adopting the above technical solution, after the rotating shaft rotates, it can pull the piston to move.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: For the surface sediment sampler used for fishery environment monitoring, a control component is provided on one side of the sampling tube and one side of the fixing plate. When collecting sediment in shallow waters through the sampling tube, when encountering plant roots, it is convenient to cut off the plant roots, avoiding excessive difficulty in inserting the sampling tube, facilitating the operation of the staff, and improving the convenience and practicality;

[0028] 1. A control component is provided on one side of the sampling tube and one side of the fixing plate. When collecting sediment in shallow waters, place the positioning plate on the upper surface of the sediment. Then, the staff inserts both hands between the sliding rod and the grip, tightly holds the grip and pushes the fixing plate downward, so as to drive the sampling tube to insert into the sediment. The silt can enter the sampling tube through the rotating ring, and can push the plugging ball upward, enabling sediment collection. When encountering plant roots during the sampling process, the insertion of the sampling tube will encounter resistance. When the resistance is too large, the staff can hold the sliding rod and the grip on one side, causing the sliding rod to move towards the grip. Through the meshing of the toothed plate and the rotating gear, the U-shaped rod can be driven to rotate. After the U-shaped rod rotates, the movable rod can be lifted through the connecting piece, and during the rotation of the rotating rod, the U-shaped rod can slide on the rotating rod and stretch the support spring. After the movable rod moves, the telescopic spring can be deformed. As the movable rod moves upward, the steel cable can be pulled to move. The steel cable is inclined in the initial state, and as the movable rod moves upward, the steel cable can be pulled to be more vertical. Furthermore, the rotating ring can be pulled to rotate through the connecting block, enabling the movable sleeve to slide on the annular rod and stretch the return spring. Thus, the annular cutter head can be rotated. Therefore, when encountering plant roots during the sampling process, pressure is applied to the sampling tube and the annular cutter head rotates, and the roots can be cut off by the annular cutter head, thus avoiding affecting the insertion of the sampling tube. After sampling, the plugging ball seals the rotating ring under the action of gravity, preventing the sample from leaking out after the sampling tube is taken out. Through the control component, when collecting sediment in shallow waters through the sampling tube, when encountering plant roots, it is convenient to cut off the plant roots, avoiding excessive difficulty in inserting the sampling tube, facilitating the operation of the staff, and improving the convenience and practicality;

[0029] 2. During the sampling process, the support rod is positioned through the positioning plate, so that the support rod does not move during the movement of the sampling tube. And the insertion of the sampling tube is limited by the support rod, so that the sampling tube does not shift easily, improving the sampling accuracy. As the sampling tube moves, the runner moves on one side of the support rod, enabling the runner to rotate. After the runner rotates, it can drive the rotating shaft to rotate. After the rotating shaft rotates, it can drive the winding member to rotate, so that the winding rope can be wound. Furthermore, the handle can be pulled to move by the winding rope, enabling the moving rod to move, and then driving the piston to move upward in the sampling tube. As the piston moves upward, it is convenient for the sample to enter the sampling tube. Subsequently, the handle can be directly moved to reset the moving rod, facilitating the extraction of the sample. And after the moving rod is reset, the winding rope unwinds on the winding member. Thus, during the sampling process, as the sampling tube is inserted, the piston can automatically move upward, improving the convenience of sampling.

[0030] 3. During the sampling process, one end of the movable rod abuts against the limiting rod to prevent the movable rod from moving due to the resistance of the silt during sampling, making it difficult to move the movable rod subsequently. When it is necessary to move the movable rod again, hold the other sliding rod and the grip, which can drive the U-shaped frame to rotate. After the U-shaped frame rotates, it can push the pull rope to bend. After the pull rope bends, it can pull the limiting rod to slide on the mounting rod and stretch the mounting spring, so that the limiting rod moves away from the movable rod, enabling the movable rod to be controlled to move to cut the root system. Then, directly releasing the sliding rod can make the limiting rod reset, which can prevent the movable rod from moving upward during sampling and avoid the difficulty of moving the movable rod again later, improving the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is a schematic sectional structure diagram of the sampling tube of the present invention;

[0033] Figure 3 is of the present invention Figure 2 an enlarged schematic diagram of area A;

[0034] Figure 4 is of the present invention Figure 3 an enlarged schematic diagram of area B;

[0035] Figure 5 is of the present invention Figure 2 an enlarged schematic diagram of area C;

[0036] Figure 6 is a schematic diagram of a partial structure of the control component of the present invention;

[0037] Figure 7 is of the present invention Figure 6 an enlarged schematic diagram of area D;

[0038] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure of region E in the present invention;

[0039] Figure 9 For the present invention Figure 1 Schematic diagram of the enlarged structure of region F in the present invention.

[0040] In the figure: 1, sampling tube; 101, mounting plate; 102, connector; 103, hollow rod; 104, fixing plate; 105, moving rod; 106, piston; 107, handle; 108, grip; 109, mounting ring; 110, rotating ring; 111, annular cutter head; 112, blocking ball; 113, support rod; 114, positioning plate; 115, L-shaped frame; 116, rotating shaft; 117, winding member; 118, runner; 119, winding rope; 2, control assembly; 201, movable rod; 202, connecting block; 203, steel cable; 204, annular groove; 205, annular rod; 206, movable sleeve; 207, return spring; 208, fixed block; 209, support block; 210, telescopic spring; 211, mounting block; 212, fixed rod; 213, sliding rod; 214, tension spring; 215, mounting frame; 216, rotating rod; 217, rotating gear; 218, toothed plate; 219, U-shaped rod; 220, support spring; 221, connecting member; 222, mounting rod; 223, limiting rod; 2231, mounting spring; 224, U-shaped frame; 225, pulling rope. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Please refer to Figures 1 - 9 , the present invention provides a technical solution: a surface sediment sampler for fishery environment monitoring, including a sampling tube 1, one end of the sampling tube 1 is provided with a mounting plate 101, and a connector 102 is fixedly installed on one side of the mounting plate 101, and the sampling tube 1 is threadedly connected to the connector 102. At the same time, a hollow rod 103 is fixedly installed on one side of the mounting plate 101, and a fixing plate 104 is fixedly installed at the end of the hollow rod 103 away from the mounting plate 101, and grips 108 are symmetrically installed on both sides of the fixing plate 104;

[0043] It further includes:

[0044] The moving rod 105 is slidably connected inside the mounting plate 101 and the connecting head 102. The moving rod 105 is slidably connected with the hollow rod 103. A handle 107 is fixedly installed on one side of the moving rod 105. One end of the moving rod 105 away from the mounting plate 101 is fixedly installed with a piston 106. At the same time, the other end of the sampling tube 1 is threadedly connected with a mounting ring 109. A rotating ring 110 is arranged on one side of the mounting ring 109. A circular cutter head 111 is fixedly arranged on one side of the rotating ring 110. A blocking ball 112 is arranged on the other side of the rotating ring 110;

[0045] The control component 2 is arranged outside the sampling tube 1 and on one side of the fixing plate 104. The control component 2 includes a movable rod 201;

[0046] The movable rod 201 is slidably connected to the inner side of the fixing plate 104 and the mounting plate 101. A steel cable 203 is fixedly installed at one end of the movable rod 201 away from the fixing plate 104. A connecting block 202 is fixedly installed at the end of the steel cable 203 away from the movable rod 201. The connecting block 202 is fixedly connected with the rotating ring 110. At the same time, an annular groove 204 is opened in the lower part of the inner part of the mounting ring 109. An annular rod 205 is fixedly installed inside the annular groove 204;

[0047] Two groups of movable sleeves 206 are symmetrically slidably connected to the outside of the annular rod 205. Both of the two movable sleeves 206 are fixedly connected with the circular cutter head 111. A return spring 207 is sleeved on one side of the two groups of movable sleeves 206 on the outside of the annular rod 205. One end of the return spring 207 is fixedly connected with the movable sleeve 206. The other end of the return spring 207 is fixedly installed with a fixing block 208. The fixing block 208 is fixedly connected with the annular rod 205;

[0048] Two support blocks 209 are symmetrically installed on one side of the outside of the movable rod 201. Both of the two support blocks 209 are fixedly connected with the sampling tube 1. A telescopic spring 210 is symmetrically sleeved on both sides of the mounting plate 101 on the outside of the movable rod 201. One end of the telescopic spring 210 is fixedly connected with the mounting plate 101. The other end of the telescopic spring 210 is fixedly installed with a mounting block 211. The mounting block 211 is fixedly connected with the movable rod 201;

[0049] Fixed rods 212 are symmetrically installed on one side of both of the two grips 108. A sliding rod 213 is slidably connected to the outside of the two fixed rods 212. A tension spring 214 is sleeved on one side of the two fixed rods 212 on the outside of the sliding rod 213. Both ends of the tension spring 214 are fixedly connected with the sliding rod 213 and the fixed rod 212 respectively;

[0050] On one side of the tops of the two grips 108 close to the fixing plate 104, mounting brackets 215 are symmetrically installed. Above the interiors of the two mounting brackets 215, a rotating rod 216 is rotatably connected. On the exteriors of the two rotating rods 216, rotating gears 217 are fixedly installed. On the closer sides of the two sliding rods 213, toothed plates 218 are fixedly installed. Moreover, the rotating gears 217 are meshed with the toothed plates 218;

[0051] On both sides of the interior of one side of the rotating rod 216, a U-shaped rod 219 is slidably connected. On both sides of the exterior of the U-shaped rod 219, support springs 220 are symmetrically sleeved. The two ends of the support springs 220 are fixedly connected to the U-shaped rod 219 and the rotating rod 216 respectively. On one side of the exterior of the U-shaped rod 219, a connecting piece 221 is rotatably connected. Moreover, the connecting piece 221 is fixedly connected to the movable rod 201.

[0052] Example 1: As Figures 1 - 7As shown in the figure, when collecting sediment in shallow water areas, the positioning plate 114 is placed on the upper surface of the sediment. Then, the staff inserts both hands between the sliding rod 213 and the grip 108, tightly holds the grip 108 and pushes the fixed plate 104 downward, so as to drive the sampling tube 1 into the sediment. The silt can enter the sampling tube 1 through the rotating ring 110, and can push the blocking ball 112 upward, so as to collect sediment. When encountering plant roots during the sampling process, the insertion of the sampling tube 1 will bring resistance. When the resistance is too large, the staff can hold one side of the sliding rod 213 and the grip 108, so that the sliding rod 213 moves towards the grip 108. The meshing of the toothed plate 218 and the rotating gear 217 can drive the U-shaped rod 219 to rotate. After the U-shaped rod 219 rotates, it can lift the movable rod 201 through the connecting piece 221. And during the rotation of the rotating rod 216, the U-shaped rod 219 can slide on the rotating rod 216 and stretch the support spring 220. After the movable rod 201 moves, it can drive the telescopic spring 210 to deform. As the movable rod 201 moves upward, it can pull the steel cable 203 to move. The steel cable 203 is inclined in the initial state. As the movable rod 201 moves upward, it can pull the steel cable 203 to be more vertical. Furthermore, it can pull the rotating ring 110 to rotate through the connecting block 202, so that the movable sleeve 206 slides on the annular rod 205, and can stretch the return spring 207. Furthermore, it can make the annular cutter head 111 rotate. Therefore, when encountering plant roots during the sampling process, pressure is applied to the sampling tube 1 and the annular cutter head 111 rotates. The roots can be cut off by the annular cutter head 111, so as to avoid affecting the insertion of the sampling tube 1. After the sampling is completed, the blocking ball 112 blocks the rotating ring 110 under the action of gravity, so as to prevent the sample from leaking out after the sampling tube 1 is taken out. Through the control component 2, when collecting sediment in shallow water areas through the sampling tube 1, when encountering plant roots, it is convenient to cut off the plant roots, avoid the insertion of the sampling tube 1 being too difficult, facilitate the operation of the staff, and improve the convenience and practicality.

[0053] One side of the inside of the fixed plate 104 where the mounting rod 222 is located is slidably connected with a support rod 113. The end of the support rod 113 away from the fixed plate 104 is fixedly installed with a positioning plate 114. A number of convex blocks are fixedly installed on one side of the positioning plate 114. At the same time, one side of the bottom of one grip 108 is symmetrically installed with L-shaped frames 115. And one side inside of the two L-shaped frames 115 is rotatably connected with a rotating shaft 116;

[0054] One end of the rotating shaft 116 passes through one side of the L-shaped frame 115 and is fixedly installed with a runner 118. The runner 118 is in close contact with the support rod 113. A winding member 117 is fixedly installed outside the rotating shaft 116 between the two L-shaped frames 115. One side outside the winding member 117 is fixedly installed with a winding rope 119. One end of the winding rope 119 away from the winding member 117 is fixedly connected to the handle 107.

[0055] Embodiment 2: As Figures 1 - 2 and Figure 9 shown, during the sampling process, the support rod 113 is positioned by the positioning plate 114, so that the support rod 113 does not move during the movement of the sampling tube 1. The insertion of the sampling tube 1 is limited by the support rod 113, so that the sampling tube 1 does not shift easily, improving the sampling accuracy. As the sampling tube 1 moves, the runner 118 moves on one side of the support rod 113, enabling the runner 118 to rotate. After the runner 118 rotates, it can drive the rotating shaft 116 to rotate. After the rotating shaft 116 rotates, it can drive the winding member 117 to rotate, so that the winding rope 119 can be wound. Furthermore, the handle 107 can be pulled to move by the winding rope 119, so that the moving rod 105 moves, and then drives the piston 106 to move upward in the sampling tube 1. As the piston 106 moves upward, it is convenient for the sample to enter the sampling tube 1. Subsequently, the handle 107 can be directly moved to reset the moving rod 105, facilitating the extraction of the sample. After the moving rod 105 is reset, the winding rope 119 unwinds on the winding member 117. Therefore, during the sampling process, as the sampling tube 1 is inserted, the piston 106 can move upward automatically, improving the convenience of sampling.

[0056] One side of the fixed plate 104 is fixedly installed with an installation rod 222. The upper part inside the installation rod 222 is slidably connected with a limiting rod 223. One side outside the limiting rod 223 is sleeved with an installation spring 2231. The two ends of the installation spring 2231 are respectively fixedly connected with the installation rod 222 and the limiting rod 223. On both sides outside the other side rotating rod 216, a U-shaped frame 224 is fixedly installed. One side of the limiting rod 223 close to the fixed plate 104 is fixedly installed with a pulling rope 225. One end of the pulling rope 225 away from the limiting rod 223 is fixedly connected to the fixed plate 104.

[0057] Embodiment 3: As Figure 6 and Figure 8As shown, during the sampling process, one end of the movable rod 201 abuts against the limiting rod 223 to prevent the movable rod 201 from moving due to the resistance of the silt during sampling, making it difficult to move the movable rod 201 subsequently. When it is necessary to move the movable rod 201 again, hold the other sliding rod 213 and the grip 108, which can drive the U-shaped frame 224 to rotate. After the U-shaped frame 224 rotates, it can push the pull rope 225 to bend. After the pull rope 225 bends, it can pull the limiting rod 223 to slide on the mounting rod 222 and stretch the mounting spring 2231, so that the limiting rod 223 moves away from the movable rod 201, enabling the movement of the movable rod 201 to cut the root system. Then, directly releasing the sliding rod 213 can cause the limiting rod 223 to reset, avoiding the upward movement of the movable rod 201 during sampling and the difficulty in moving the movable rod 201 again subsequently, thus improving the practicability.

[0058] Working principle: When using this surface sediment sampler for fishery environment monitoring, first, according to Figures 1 - 9 As shown, when sampling the sediment in shallow waters, place the positioning plate 114 on the upper surface of the sediment. Then, the staff inserts both hands between the sliding rod 213 and the grip 108, tightly holds the grip 108 and pushes the fixing plate 104 downward, so as to drive the sampling tube 1 to insert into the sediment. The silt can enter the sampling tube 1 through the rotating ring 110, and can push the blocking ball 112 upward to enable sediment sampling. When encountering plant roots during the sampling process, the insertion of the sampling tube 1 will bring resistance. When the resistance is too large, the staff can hold one side of the sliding rod 213 and the grip 108, so that the sliding rod 213 moves towards the grip 108. Through the meshing of the toothed plate 218 and the rotating gear 217, the U-shaped rod 219 can be driven to rotate. After the U-shaped rod 219 rotates, it can lift the movable rod 201 through the connecting piece 221. And during the rotation of the rotating rod 216, the U-shaped rod 219 can slide on the rotating rod 216 and stretch the supporting spring 220. After the movable rod 201 moves, it can drive the telescopic spring 210 to deform. As the movable rod 201 moves upward, the steel cable 203 can be pulled to move. The steel cable 203 is inclined in the initial state. As the movable rod 201 moves upward, the steel cable 203 can be pulled to be more vertical. Then, the rotating ring 110 can be pulled to rotate through the connecting block 202, so that the movable sleeve 206 slides on the annular rod 205 and can stretch the return spring 207. Then, the annular cutter head 111 can be rotated. Therefore, when encountering plant roots during the sampling process, pressure is applied to the sampling tube 1 and the annular cutter head 111 is rotated. The root system can be cut off by the annular cutter head 111, thus avoiding affecting the insertion of the sampling tube 1. After sampling, the blocking ball 112 blocks the rotating ring 110 under the action of gravity, so as to prevent the sample from leaking out after the sampling tube 1 is taken out;

[0059] During the sampling process, the support rod 113 is positioned by the positioning plate 114, so that the support rod 113 does not move during the movement of the sampling tube 1, and the insertion of the sampling tube 1 is limited by the support rod 113, so that the sampling tube 1 does not shift easily, improving the sampling accuracy. As the sampling tube 1 moves, the runner 118 moves on one side of the support rod 113, enabling the runner 118 to rotate. After the runner 118 rotates, it can drive the rotating shaft 116 to rotate. After the rotating shaft 116 rotates, it can drive the winding member 117 to rotate, enabling the winding rope 119 to be wound. Then, the handle 107 can be pulled by the winding rope 119 to move the moving rod 105, and then drive the piston 106 to move upward in the sampling tube 1. As the piston 106 moves upward, it is convenient for the sample to enter the sampling tube 1. Subsequently, the handle 107 can be directly moved to reset the moving rod 105, facilitating the extraction of the sample. After the moving rod 105 is reset, the winding rope 119 unwinds on the winding member 117. Thus, during the sampling process, as the sampling tube 1 is inserted, the piston 106 can move upward automatically, improving the convenience of sampling. During the sampling process, one end of the movable rod 201 abuts against the limiting rod 223 to prevent the movable rod 201 from moving due to the resistance of the silt during sampling, making it difficult to move the movable rod 201 subsequently. When it is necessary to move the movable rod 201 again, hold the other sliding rod 213 and the grip 108, which can drive the U-shaped frame 224 to rotate. After the U-shaped frame 224 rotates, it can push the pull rope 225 to bend. After the pull rope 225 bends, it can pull the limiting rod 223 to slide on the mounting rod 222 and stretch the mounting spring 2231, so that the limiting rod 223 moves away from the movable rod 201, enabling the movable rod 201 to be moved to cut the root system. Then, directly releasing the sliding rod 213 can cause the limiting rod 223 to reset, preventing the movable rod 201 from moving upward during sampling and avoiding difficulty in moving the movable rod 201 again subsequently.

[0060] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0061] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A surface sediment sampler for fishery environment monitoring, comprising a sampling tube (1), one end of the sampling tube (1) is provided with a mounting plate (101), one side of the mounting plate (101) is fixedly mounted with a connector (102), and the sampling tube (1) is threadedly connected to the connector (102), and at the same time a hollow rod (103) is fixedly mounted on one side of the mounting plate (101), and a fixing plate (104) is fixedly mounted on one end of the hollow rod (103) away from the mounting plate (101), and handles (108) are symmetrically mounted on both sides of the fixing plate (104); It is characterized in that Also includes: A moving rod (105) is slidably connected inside the mounting plate (101) and the connector (102), the moving rod (105) is slidably connected to the hollow rod (103), a handle (107) is fixedly installed on one side of the moving rod (105), and a piston (106) is fixedly installed on one end of the moving rod (105) away from the mounting plate (101), while the other end of the sampling tube (1) is threadedly connected with a mounting ring (109), and a rotating ring (110) is provided on one side of the mounting ring (109), and a ring-shaped cutter head (111) is fixed on one side of the rotating ring (110), and a blocking ball (112) is provided on the other side of the rotating ring (110); A control component (2) is arranged outside the sampling tube (1) and on one side of the fixing plate (104), and the control component (2) comprises a movable rod (201); The movable rod (201) is slidably connected to the inner side of the fixed plate (104) and the mounting plate (101); a steel cable (203) is fixedly installed on one end of the movable rod (201) away from the fixed plate (104); a connecting block (202) is fixedly installed on one end of the steel cable (203) away from the movable rod (201); and the connecting block (202) is fixedly connected to the rotating ring (110); and an annular groove (204) is opened at the lower part of the interior of the mounting ring (109); and an annular rod (205) is fixedly installed inside the annular groove (204).

2. A surface sediment sampler for fishery environment monitoring according to claim 1, characterized in that: The outside of the annular rod (205) is symmetrically and slidingly connected with two sets of movable sleeves (206), and the two movable sleeves (206) are fixedly connected to the annular cutter head (111), and the outside of the annular rod (205) is provided with a return spring (207) on one side of the two sets of movable sleeves (206), and one end of the return spring (207) is fixedly connected to the movable sleeve (206), and the other end of the return spring (207) is fixedly installed with a fixed block (208), and the fixed block (208) is fixedly connected to the annular rod (205).

3. A surface sediment sampler for fishery environment monitoring according to claim 2, characterized in that: A support block (209) is symmetrically installed on one side of the outside of the movable rod (201), and the two support blocks (209) are fixedly connected to the sampling tube (1), and telescopic springs (210) are symmetrically sleeved on both sides of the mounting plate (101) outside the movable rod (201), and one end of the telescopic spring (210) is fixedly connected to the mounting plate (101), and a mounting block (211) is fixedly installed on the other end of the telescopic spring (210), and the mounting block (211) is fixedly connected to the movable rod (201).

4. The surface sediment sampler for fishery environment monitoring according to claim 1, characterized in that: A fixed rod (212) is symmetrically mounted on one side of the two handles (108), and the outside of the two fixed rods (212) is slidably connected to a sliding rod (213), and a tension spring (214) is sleeved on one side of the sliding rod (213) outside the two fixed rods (212), and both ends of the tension spring (214) are fixedly connected to the sliding rod (213) and the fixed rod (212), respectively.

5. A surface sediment sampler for fishery environment monitoring according to claim 4, characterized in that: A mounting frame (215) is symmetrically installed on one side of the top of the two handles (108) close to the fixed plate (104), and a rotating rod (216) is rotatably connected to the upper part of the inside of the two mounting frames (215), and a rotating gear (217) is fixedly installed on the outside of the two rotating rods (216), and a toothed plate (218) is fixedly installed on the side close to the two sliding rods (213), and the rotating gear (217) is meshingly connected with the toothed plate (218).

6. A surface sediment sampler for fishery environment monitoring according to claim 5, characterized in that: The inner sides of the rotating rod (216) on one side are slidably connected to the U-shaped rod (219), and the outer sides of the U-shaped rod (219) are symmetrically sleeved with support springs (220), and the two ends of the support spring (220) are respectively fixedly connected to the U-shaped rod (219) and the rotating rod (216), and at the same time, the outer side of the U-shaped rod (219) is rotatably connected to a connecting piece (221), and the connecting piece (221) is fixedly connected to the movable rod (201).

7. A surface sediment sampler for fishery environment monitoring according to claim 6, characterized in that: A mounting rod (222) is fixedly installed on one side of the fixed plate (104), and a limiting rod (223) is slidably connected to the inner upper part of the mounting rod (222), and a mounting spring (2231) is sleeved on one side of the outer side of the limiting rod (223), and both ends of the mounting spring (2231) are respectively fixedly connected to the mounting rod (222) and the limiting rod (223), and a U-shaped frame (224) is fixedly installed on both sides of the outer side of the rotating rod (216) on the other side, and a pull rope (225) is fixedly installed on one side of the limiting rod (223) close to the fixed plate (104), and the end of the pull rope (225) away from the limiting rod (223) is fixedly connected to the fixed plate (104).

8. The surface sediment sampler for fishery environment monitoring according to claim 7, characterized in that: A support rod (113) is slidably connected to one side of the mounting rod (222) inside the fixing plate (104), and a positioning plate (114) is fixedly installed on one end of the support rod (113) away from the fixing plate (104), and a plurality of protrusions are fixedly installed on one side of the positioning plate (114), and an L-shaped frame (115) is symmetrically installed on one side of the bottom of the handle (108), and a rotating shaft (116) is rotatably connected to one side of the inside of the two L-shaped frames (115).

9. A surface sediment sampler for fishery environment monitoring according to claim 8, characterized in that: One end of the rotating shaft (116) passes through one side of the L-shaped frame (115) and is fixedly installed with a rotating wheel (118), and the rotating wheel (118) is tightly fitted with the support rod (113), and a winding member (117) is fixedly installed outside the rotating shaft (116) and located between the two L-shaped frames (115), and a winding rope (119) is fixedly installed on one side of the outside of the winding member (117), and the end of the winding rope (119) away from the winding member (117) is fixedly connected to the handle (107).

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