Soft sludge type deposition column sampling device and sampling method

Abstract

The invention provides a soft sludge type deposition column sampling device and a sampling method, and relates to the technical field of sludge sampling, the soft sludge type deposition column sampling device comprises an equipment platform, a positioning lifting device is arranged at one end of the side face of the equipment platform, and one end of the positioning lifting device is connected with a sampling storage device; lifting fixing devices are arranged at the two ends of the equipment platform, walking wheels are arranged on the two sides of the equipment platform, a through hole is formed in one end of the equipment platform, the equipment is driven to a designated position, then the lifting fixing devices are started to fix the equipment, and accidents are prevented during sampling; after the adjustment is completed, the sampling storage device is started, the sample can be collected into the sampling column at the moment, and then the sealing cover is tightly covered to prevent the sample from flowing out, so that not only can the sample be collected according to different depths, but also the labor intensity of workers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sludge sampling, in particular to a soft sludge type sediment column sampling device and a sampling method. Background Art

[0002] Silt, as a common sedimentary material in water bodies, plays an important role in earth science and environmental science. It is a mixture of solid particles carried by water flow or liquid and deposited on the bottom of the water or liquid. The components of silt mainly include sand, soil, organic matter, etc. After these particles are suspended and deposited in the water body, they gradually settle to the bottom of the water to form a layer of silt-like sediment.

[0003] The existing collection equipment is generally transported to the designated place manually and then starts to collect, and the manpower is limited. This results in that not only a large amount of manpower is required in the collection process, but also it is impossible to collect silt according to different depths. Therefore, we have made improvements to this and proposed a soft silt type sediment column sampling device and sampling method. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a soft silt type sediment column sampling device and a sampling method, which solves the problem that the existing collection equipment is generally transported to a designated place manually and then starts collection, and the manpower is limited. This results in not only a large amount of manpower being consumed in the collection process, but also the problem that it is impossible to collect silt according to different depths.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a soft sludge type sediment column sampling device and sampling method, including an equipment platform, a positioning and lifting device is provided at one end of the side of the equipment platform, one end of the positioning and lifting device is connected to a sampling and preservation device, lifting and fixing devices are provided at both ends of the equipment platform, walking wheels are provided on both sides of the equipment platform, and a through hole is opened inside one end of the equipment platform.

[0006] Preferably, the positioning and lifting device comprises a hydraulic rod and a fixed base;

[0007] The fixed base is fixedly mounted on one end surface of the equipment platform, and a hydraulic rod is fixedly mounted on one side surface of the fixed base.

[0008] Preferably, a fixed platform is fixedly installed on the output end of the hydraulic rod, a deposition inner column is movably installed at the center of the fixed platform, a handle is provided at one end of the deposition inner column, a deposition outer column is movably installed on the outer surface of the end of the deposition inner column away from the handle through a thread, a conical head is provided at the end of the deposition outer column away from the deposition inner column, a connecting hole is provided on one side of the outer surface of the deposition outer column, an elastic hose is provided on the connecting hole, one end of the elastic hose is connected to the sampling and preservation device, a sliding plug is provided at the end of the deposition inner column close to the thread, and the sliding plug is movably pressed against one side of the connecting hole.

[0009] Preferably, a limit groove is provided on both sides of the outer surface of the deposition outer column, and a limit block is movably installed inside each of the limit grooves. The limit block is fixedly installed on the inner surface of the fixed ring, and two fixed connecting rods are fixedly installed on one side of the fixed ring. The end of the fixed connecting rod away from the fixed ring is fixedly installed on one side surface of the fixed platform, and the deposition outer column is installed horizontally with the through hole.

[0010] Preferably, the sampling and storage device comprises a circular fixing seat and an air pump;

[0011] The circular fixing seat is fixedly mounted on a side surface of the equipment platform, and an air pump is fixedly mounted on the outer surface of the circular fixing seat.

[0012] Preferably, one end of the air pump is connected to an elastic hose, a plurality of fixed cylinders are fixedly mounted on one side of the outer surface of the circular fixed seat, a fixed disk is fixedly mounted on the end of the fixed cylinder away from the circular fixed seat, a sampling column is movably mounted between the fixed disk and the center of the circular fixed seat, a sealing cover is movably mounted on one end of the sampling column, a clamping seat is provided at one end of the sampling column away from the sealing cover, the clamping seat is movably clamped on the clamping column, and the clamping column is provided at one end of the air pump.

[0013] Preferably, the lifting and fixing device comprises a second U-shaped protruding block and a rectangular fixing seat;

[0014] The rectangular fixing seat is fixedly installed on one end side of the equipment platform, and a plurality of second U-shaped protruding blocks are fixedly installed on one side of the rectangular fixing seat.

[0015] Preferably, one end of each of the second U-shaped protrusions is movably mounted with a second U-shaped fixing seat via a rotating axis, and one end of each of the second U-shaped fixing seats is fixedly mounted with an L-shaped connecting rod, and one end of the L-shaped connecting rod away from the second U-shaped fixing seat is movably mounted on the outer surface of an elliptical fixing column via a rotating axis, and one end of the elliptical fixing column is fixedly mounted with a limiting disk, and a fixing protrusion is provided on the side of the limiting disk away from the elliptical fixing column.

[0016] Preferably, a rectangular groove is provided inside the end of the elliptical fixed column away from the limiting disk, a movable shaft is arranged inside the rectangular groove, a first hydraulic rod is movably mounted on the outer surface of the movable shaft, a first U-shaped fixing seat is fixedly mounted on the bottom end of the first hydraulic rod, the first U-shaped fixing seat is movably mounted on one end of the first U-row protrusion block through a rotating shaft, and the first U-row protrusion block is fixedly mounted on one side surface of the rectangular fixing seat.

[0017] A method for sampling a soft sludge type sediment column, characterized in that: the device is driven to a designated position, and then a lifting and fixing device is started to fix the device to prevent accidents during sampling, and then the positioning lifting device is started, and then the depth can be adjusted according to the designated depth. After the adjustment is completed, the sampling and storage device is started, and the sample can be collected into the interior of the sampling column, and then the sealing cover is tightly closed to prevent the sample from flowing out, which can not only collect samples according to different depths, but also reduce the labor intensity of manual labor;

[0018] After the equipment is driven to the designated position, the first hydraulic rod in the lifting and fixing device is started, and the first hydraulic rod drives the elliptical fixing column to move. The elliptical fixing column changes its movement trajectory under the restriction of the L-shaped connecting rod, so that the movement becomes up and down, which is convenient for fixing the equipment at the designated position;

[0019] Then, the hydraulic rod in the positioning and lifting device is started according to different depths. The hydraulic rod will move according to the specified depth. After moving to the specified position, the handle is turned. Since the handle is connected to the deposition inner column, the deposition inner column will drive the deposition outer column to move through the thread. At this time, the connection hole opened on one side of the deposition outer column will gradually move away from the sliding plug, thereby opening the connection hole to facilitate the suction of sludge. When the specified position is not reached, the connection hole is in a closed state to prevent sludge from entering it and avoid the accuracy of detection.

[0020] When the sediment outer column reaches the specified depth, the air pump in the sampling and preservation device is started. The air pump can suck the sludge from the connecting hole into the inside of the elastic hose, and then discharge it into the sampling column through the elastic hose. When the sampling is completed, the sealing cover is closed, which not only reduces the labor intensity of manual labor, but also allows sampling according to different depths.

[0021] The present invention provides a soft sludge type sediment column sampling device and a sampling method, which have the following beneficial effects:

[0022] First, the equipment is driven to the designated position, and then the lifting and fixing device is started to fix the equipment to prevent accidents during sampling. Then the positioning lifting device is started, and the depth can be adjusted according to the designated depth. After the adjustment is completed, the sampling and preservation device is started, and the sample can be collected into the inside of the sampling column. Then the sealing cover is closed to prevent the sample from flowing out. It can not only collect samples according to different depths, but also reduce the labor intensity of manual labor.

[0023] After the equipment is driven to the designated position, the first hydraulic rod in the lifting and fixing device is started, and the first hydraulic rod drives the elliptical fixing column to move. The elliptical fixing column changes its movement trajectory under the restriction of the L-shaped connecting rod, so that the movement becomes up and down, which is convenient for fixing the equipment at the designated position;

[0024] Then, the hydraulic rod in the positioning and lifting device is started according to different depths. The hydraulic rod will move according to the specified depth. After moving to the specified position, the handle is turned. Since the handle is connected to the deposition inner column, the deposition inner column will drive the deposition outer column to move through the thread. At this time, the connection hole opened on one side of the deposition outer column will gradually move away from the sliding plug, thereby opening the connection hole to facilitate the suction of sludge. When the specified position is not reached, the connection hole is in a closed state to prevent sludge from entering it and avoid the accuracy of detection.

[0025] When the sediment outer column reaches the specified depth, the air pump in the sampling and preservation device is started. The air pump can suck the sludge from the connecting hole into the inside of the elastic hose, and then discharge it into the sampling column through the elastic hose. When the sampling is completed, the sealing cover is closed, which not only reduces the labor intensity of manual labor, but also allows sampling according to different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the front side of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the back side of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure in the present invention when viewed from above;

[0029] Figure 4 It is a structural schematic diagram of the front side of the sampling column in the present invention;

[0030] Figure 5 It is a structural schematic diagram of the front side of the air pump in the present invention;

[0031] Figure 6 It is a structural schematic diagram of the front side of the deposition outer column in the present invention;

[0032] Figure 7It is a structural schematic diagram of the side surface of the deposition outer column in the present invention;

[0033] Figure 8 For the present invention Figure 7 Schematic diagram of the structure of the cross section at AA.

[0034] In the figure, 1. positioning lifting device; 101. fixed platform; 102. elastic hose; 103. hydraulic rod; 104. fixed base; 105. sedimentation inner column; 106. handle; 107. fixed connecting rod; 108. limit block; 109. fixed ring; 110. limit groove; 111. sedimentation outer column; 112. conical head; 113. connecting hole; 114. sliding plug; 115. thread; 2. lifting and fixing device; 201. movable shaft; 202. first hydraulic rod; 203. first U-shaped fixing seat; 204. A U-shaped row of protruding blocks; 205, an elliptical fixed column; 206, a limiting disc; 207, an L-shaped connecting rod; 208, a second U-shaped fixed seat; 209, a second U-shaped protruding block; 210, a rectangular fixed seat; 211, a rectangular groove; 212, a fixed protrusion; 3, an equipment platform; 4, walking wheels; 5, a sampling and preservation device; 501, a sealing cover; 502, a fixed disc; 503, a sampling column; 504, a fixed cylinder; 505, a circular fixed seat; 506, an air pump; 507, a holder; 508, a clamping column; 6, a through hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example:

[0037] like Figures 1 to 8 As shown, an embodiment of the present invention provides a soft sludge type sediment column sampling device and a sampling method, including an equipment platform 3, a positioning and lifting device 1 is provided at one end of the side of the equipment platform 3, one end of the positioning and lifting device 1 is connected to a sampling and preservation device 5, lifting and fixing devices 2 are provided at both ends of the equipment platform 3, walking wheels 4 are provided on both sides of the equipment platform 3, and a through hole 6 is opened inside one end of the equipment platform 3.

[0038] Preferably, the positioning and lifting device 1 comprises a hydraulic rod 103 and a fixed base 104;

[0039] The fixed base 104 is fixedly mounted on the surface of one end of the equipment platform 3, a hydraulic rod 103 is fixedly mounted on one side surface of the fixed base 104, a fixed platform 101 is fixedly mounted on the output end of the hydraulic rod 103, a deposition inner column 105 is movably mounted at the center of the fixed platform 101, a handle 106 is arranged at one end of the deposition inner column 105, a deposition outer column 111 is movably mounted on the outer surface of one end of the deposition inner column 105 away from the handle 106 through a thread 115, and the deposition outer column 111 A conical head 112 is provided at one end away from the deposition inner column 105, a connection hole 113 is provided on one side of the outer surface of the deposition outer column 111, an elastic hose 102 is provided on the connection hole 113, one end of the elastic hose 102 is connected to the sampling storage device 5, a sliding plug 114 is provided at one end of the deposition inner column 105 close to the thread 115, the sliding plug 114 is movably pressed against one side of the connection hole 113, and a limiting groove 110 is provided on both sides of the outer surface of the deposition outer column 111, each A limit block 108 is movably installed inside the limit groove 110, and the limit block 108 is fixedly installed on the inner surface of the fixing ring 109. Two fixed connecting rods 107 are fixedly installed on one side of the fixing ring 109. The end of the fixed connecting rod 107 away from the fixing ring 109 is fixedly installed on the side surface of the fixed platform 101. The deposition outer column 111 is installed horizontally with the through hole 6. By then starting the hydraulic rod 103 in the positioning and lifting device 1 according to different depths, the hydraulic rod 103 will move according to the specified depth. After moving to the specified position, the handle 106 is turned at this time. Since the handle 106 is connected to the deposition inner column 105, the deposition inner column 105 will drive the deposition outer column 111 to move through the thread. At this time, the connection hole 113 opened on one side of the deposition outer column 111 will gradually move away from the sliding plug 114, thereby opening the connection hole 113 to facilitate the suction of sludge. When the specified position is not reached, the connection hole 113 is in a closed state to prevent sludge from entering therein, thereby avoiding the accuracy of detection.

[0040] Preferably, the sampling and storage device 5 includes a circular fixing seat 505 and an air pump 506;

[0041] The circular fixed seat 505 is fixedly installed on one side surface of the equipment platform 3, and an air pump 506 is fixedly installed on the outer surface of the circular fixed seat 505. One end of the air pump 506 is connected to the elastic hose 102. A plurality of fixed cylinders 504 are fixedly installed on one side of the outer surface of the circular fixed seat 505. A fixed disc 502 is fixedly installed on one end of the fixed cylinder 504 away from the circular fixed seat 505. A sampling column 503 is movably installed between the fixed disc 502 and the center of the circular fixed seat 505. A sealing cover 501 is movably installed on one end of the sampling column 503. A holder 507 is provided at one end of the column 503 away from the sealing cover 501. The holder 507 is movably clamped on a clamping column 508. The clamping column 508 is provided at one end of the air pump 506. When the sedimentation outer column 111 reaches the specified depth, the air pump 506 in the sampling and preservation device 5 is started. At this time, the air pump 506 can suck the sludge from the connecting hole 113 into the inside of the elastic hose 102, and then discharge it into the sampling column 503 through the elastic hose 102. When the sampling is completed, the sealing cover 501 is closed, which not only reduces the labor intensity of manual labor, but also allows sampling according to different depths.

[0042] Preferably, the lifting and fixing device comprises a second U-shaped protruding block 209 and a rectangular fixing seat 210;

[0043] The rectangular fixing seat 210 is fixedly mounted on the side of one end of the equipment platform 3, and a plurality of second U-shaped protrusions 209 are fixedly mounted on one side of the rectangular fixing seat 210, and a second U-shaped fixing seat 208 is movably mounted on one end of each of the second U-shaped protrusions 209 through a rotating axis, and an L-shaped connecting rod 207 is fixedly mounted on one end of each of the second U-shaped fixing seats 208, and the end of the L-shaped connecting rod 207 away from the second U-shaped fixing seat 208 is movably mounted on the outer surface of the elliptical fixing column 205 through a rotating axis, and a limiting disc 206 is fixedly mounted on one end of the elliptical fixing column 205, and a fixing protrusion 212 is provided on the side of the limiting disc 206 away from the elliptical fixing column 205, and a fixing protrusion 212 is provided inside the end of the elliptical fixing column 205 away from the limiting disc 206. A rectangular groove 211, wherein a movable shaft 201 is arranged inside the rectangular groove 211, and a first hydraulic rod 202 is movably installed on the outer surface of the movable shaft 201, and a first U-shaped fixing seat 203 is fixedly installed on the bottom end of the first hydraulic rod 202, and the first U-shaped fixing seat 203 is movably installed on one end of a first U-row protruding block 204 through a rotating shaft, and the first U-row protruding block 204 is fixedly installed on one side surface of the rectangular fixing seat 210. After the equipment is driven to the specified position, the first hydraulic rod 202 in the lifting and fixing device 2 is started, and at this time, the first hydraulic rod 202 will drive the elliptical fixing column 205 to move, and the elliptical fixing column 205 will change its movement trajectory under the restriction of the L-shaped connecting rod 207, so that the movement becomes up and down, which is convenient for fixing the equipment at the specified position.

[0045] A method for sampling a soft sludge type sediment column, characterized in that: the device is driven to a designated position, and then the lifting and fixing device 2 is started to fix the device to prevent accidents during sampling, and then the positioning lifting device 1 is started, and then the depth can be adjusted according to the designated depth. After the adjustment is completed, the sampling storage device 5 is started, and the sample can be collected into the interior of the sampling column 503, and then the sealing cover 501 is tightly closed to prevent the sample from flowing out, which can not only collect samples according to different depths, but also reduce the labor intensity of manual labor;

[0046] After the equipment is driven to the designated position, the first hydraulic rod 202 in the lifting and fixing device 2 is started, and the first hydraulic rod 202 drives the elliptical fixing column 205 to move. The elliptical fixing column 205 changes its movement trajectory under the restriction of the L-shaped connecting rod 207, so that the movement becomes up and down, which is convenient for fixing the equipment at the designated position;

[0047] Then, the hydraulic rod 103 in the positioning and lifting device 1 is started according to different depths. The hydraulic rod 103 will move according to the specified depth. After moving to the specified position, the handle 106 is turned. Since the handle 106 is connected to the deposition inner column 105, the deposition inner column 105 will drive the deposition outer column 111 to move through the thread. At this time, the connection hole 113 opened on one side of the deposition outer column 111 will gradually move away from the sliding plug 114, thereby opening the connection hole 113 to facilitate the suction of sludge. When the specified position is not reached, the connection hole 113 is in a closed state to prevent sludge from entering therein and avoid the accuracy of detection.

[0048] When the sedimentation outer column 111 reaches the specified depth, the air pump 506 in the sampling and preservation device 5 is started. The air pump 506 can suck the sludge from the connecting hole 113 into the interior of the elastic hose 102, and then discharge it into the sampling column 503 through the elastic hose 102. When the sampling is completed, the sealing cover 501 is tightly closed, which not only reduces the labor intensity of manual labor, but also allows sampling according to different depths.

[0049] Working principle:

[0050] First, the device is driven to the designated position, and then the lifting and fixing device 2 is started to fix the device to prevent accidents during sampling. Then, the positioning lifting device 1 is started, and the depth can be adjusted according to the designated depth. After the adjustment is completed, the sampling and storage device 5 is started, and the sample can be collected into the inside of the sampling column 503. Then, the sealing cover 501 is tightly closed to prevent the sample from flowing out. Not only can the sample be collected according to different depths, but also the labor intensity of manual labor is reduced;

[0051] After the equipment is driven to the designated position, the first hydraulic rod 202 in the lifting and fixing device 2 is started, and the first hydraulic rod 202 drives the elliptical fixing column 205 to move. The elliptical fixing column 205 changes its movement trajectory under the restriction of the L-shaped connecting rod 207, so that the movement becomes up and down, which is convenient for fixing the equipment at the designated position;

[0052] Then, the hydraulic rod 103 in the positioning and lifting device 1 is started according to different depths. The hydraulic rod 103 will move according to the specified depth. After moving to the specified position, the handle 106 is turned. Since the handle 106 is connected to the deposition inner column 105, the deposition inner column 105 will drive the deposition outer column 111 to move through the thread. At this time, the connection hole 113 opened on one side of the deposition outer column 111 will gradually move away from the sliding plug 114, thereby opening the connection hole 113 to facilitate the suction of sludge. When the specified position is not reached, the connection hole 113 is in a closed state to prevent sludge from entering therein and avoid the accuracy of detection.

[0053] When the sedimentation outer column 111 reaches the specified depth, the air pump 506 in the sampling and preservation device 5 is started. The air pump 506 can suck the sludge from the connecting hole 113 into the interior of the elastic hose 102, and then discharge it into the sampling column 503 through the elastic hose 102. When the sampling is completed, the sealing cover 501 is tightly closed, which not only reduces the labor intensity of manual labor, but also allows sampling according to different depths.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A soft sludge type sediment column sampling device and sampling method, comprising an equipment platform (3), characterized in that: A positioning lifting device (1) is provided at one end of the side of the equipment platform (3), one end of the positioning lifting device (1) is connected to the sampling and storage device (5), lifting and fixing devices (2) are provided at both ends of the equipment platform (3), walking wheels (4) are provided on both sides of the equipment platform (3), and a through hole (6) is opened inside one end of the equipment platform (3).

2. A soft sludge type sediment column sampling device according to claim 1, characterized in that: The positioning and lifting device (1) comprises a hydraulic rod (103) and a fixed base (104); The fixed base (104) is fixedly mounted on one end surface of the equipment platform (3), and a hydraulic rod (103) is fixedly mounted on one side surface of the fixed base (104).

3. A soft sludge type sediment column sampling device according to claim 2, characterized in that: A fixed platform (101) is fixedly mounted on the output end of the hydraulic rod (103); a deposition inner column (105) is movably mounted at the center of the fixed platform (101); a handle (106) is provided at one end of the deposition inner column (105); a deposition outer column (111) is movably mounted on the outer surface of an end of the deposition inner column (105) away from the handle (106) via a thread (115); a conical head (112) is provided at an end of the deposition outer column (111) away from the deposition inner column (105); a connecting hole (113) is provided on one side of the outer surface of the deposition outer column (111); an elastic hose (102) is provided on the connecting hole (113); one end of the elastic hose (102) is connected to the sampling and storage device (5); a sliding plug (114) is provided at one end of the deposition inner column (105) close to the thread (115); the sliding plug (114) is movably pressed against one side of the connecting hole (113).

4. A soft sludge type sediment column sampling device according to claim 3, characterized in that: A limiting groove (110) is provided on both sides of the outer surface of the deposition outer column (111), and a limiting block (108) is movably installed inside each limiting groove (110), and the limiting block (108) is fixedly installed on the inner surface of the fixing ring (109), and two fixed connecting rods (107) are fixedly installed on one side of the fixing ring (109), and one end of the fixed connecting rod (107) away from the fixing ring (109) is fixedly installed on a side surface of the fixing platform (101), and the deposition outer column (111) is installed horizontally with the through hole (6).

5. The soft sludge type sediment column sampling device according to claim 1, characterized in that: The sampling and storage device (5) comprises a circular fixing seat (505) and an air pump (506); The circular fixing seat (505) is fixedly mounted on a side surface of the equipment platform (3), and an air pump (506) is fixedly mounted on the outer surface of the circular fixing seat (505).

6. A soft sludge type sediment column sampling device according to claim 5, characterized in that: One end of the air pump (506) is connected to the elastic hose (102); a plurality of fixed cylinders (504) are fixedly mounted on one side of the outer surface of the circular fixed seat (505); a fixed disc (502) is fixedly mounted on one end of the fixed cylinder (504) away from the circular fixed seat (505); a sampling column (503) is movably mounted between the fixed disc (502) and the center of the circular fixed seat (505); a sealing cover (501) is movably mounted on one end of the sampling column (503); a clamping seat (507) is arranged on one end of the sampling column (503) away from the sealing cover (501); the clamping seat (507) is movably clamped on a clamping column (508); and the clamping column (508) is arranged at one end of the air pump (506).

7. The soft sludge type sediment column sampling device according to claim 1, characterized in that: The lifting and fixing device comprises a second U-shaped protruding block (209) and a rectangular fixing seat (210); The rectangular fixing seat (210) is fixedly mounted on a side surface of one end of the equipment platform (3), and a plurality of second U-shaped protruding blocks (209) are fixedly mounted on one side of the rectangular fixing seat (210).

8. A soft sludge type sediment column sampling device according to claim 7, characterized in that: One end of each second U-shaped protruding block (209) is movably mounted with a second U-shaped fixing seat (208) via a rotating shaft, and one end of each second U-shaped fixing seat (208) is fixedly mounted with an L-shaped connecting rod (207). One end of the L-shaped connecting rod (207) away from the second U-shaped fixing seat (208) is movably mounted on the outer surface of the elliptical fixing column (205) via a rotating shaft. One end of the elliptical fixing column (205) is fixedly mounted with a limiting disc (206), and a fixing protrusion (212) is provided on a side of the limiting disc (206) away from the elliptical fixing column (205).

9. A soft sludge type sediment column sampling device according to claim 8, characterized in that: A rectangular groove (211) is provided inside one end of the elliptical fixed column (205) away from the limiting disc (206); a movable shaft (201) is provided inside the rectangular groove (211); a first hydraulic rod (202) is movably mounted on the outer surface of the movable shaft (201); a first U-shaped fixed seat (203) is fixedly mounted on the bottom end of the first hydraulic rod (202); the first U-shaped fixed seat (203) is movably mounted on one end of a first U-shaped protruding block (204) via a rotating shaft; and the first U-shaped protruding block (204) is fixedly mounted on a side surface of the rectangular fixed seat (210).

10. A method for sampling a soft sludge sediment column, characterized in that: The device is driven to a designated position, and then the lifting and fixing device (2) is started to fix the device to prevent accidents during sampling. Then the positioning lifting device (1) is started, and the depth can be adjusted according to the designated depth. After the adjustment is completed, the sampling storage device (5) is started, and the sample can be collected into the interior of the sampling column (503). Then the sealing cover (501) is tightly closed to prevent the sample from flowing out. Not only can the sample be collected according to different depths, but also the labor intensity of manual labor is reduced. After the equipment is driven to the designated position, the first hydraulic rod (202) in the lifting and fixing device (2) is started, and the first hydraulic rod (202) drives the elliptical fixing column (205) to move. The elliptical fixing column (205) changes its movement trajectory under the restriction of the L-shaped connecting rod (207), so that the movement becomes up and down, which facilitates the fixing of the equipment at the designated position; Then, the hydraulic rod (103) in the positioning and lifting device (1) is started according to different depths. The hydraulic rod (103) moves according to the specified depth. When it moves to the specified position, the handle (106) is turned. Since the handle (106) is connected to the deposition inner column (105), the deposition inner column (105) drives the deposition outer column (111) to move through the thread. At this time, the connection hole (113) opened on one side of the deposition outer column (111) will gradually move away from the sliding plug (114), thereby opening the connection hole (113) to facilitate the suction of sludge. When the specified position is not reached, the connection hole (113) is in a closed state to prevent sludge from entering therein, thereby affecting the accuracy of detection. When the sedimentation outer column (111) reaches the specified depth, the air pump (506) in the sampling and preservation device (5) is started. The air pump (506) can suck the sludge from the connecting hole (113) into the interior of the elastic hose (102), and then discharge it into the sampling column (503) from the elastic hose (102). When the sampling is completed, the sealing cover (501) is tightly closed, which not only reduces the labor intensity of manual labor, but also allows sampling according to different depths.

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