CN211085744U

CN211085744U - River lake sediment normal position sample thief

Info

Publication number: CN211085744U
Application number: CN201921651102.4U
Authority: CN
Inventors: 王迎蒙; 刘永启; 叶根喜; 石益萍; 栗艳兵; 陈正宗; 蒋斌
Original assignee: Nanjing Bilan Environmental Technology Co ltd
Current assignee: Nanjing Bilan Environmental Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-07-24
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to the technical field of river and lake sediment sampling, in particular to a river and lake sediment in-situ sampler, which comprises a sampling pipe, wherein one end of the sampling pipe is provided with a support frame, a mudguard is arranged in the sampling pipe, and one side of the mudguard, which faces to the support frame, is provided with an adjusting part; drainage holes are formed in the two sides of the sampling pipe; the support frame is connected with a telescopic rod; a waterproof power supply box is arranged at one end of the telescopic rod, which is positioned in a handheld manner, and a button switch and an indicator lamp are arranged on the waterproof power supply box; one end of the sampling tube, which is far away from the support frame, is symmetrically provided with a fixed sharp nozzle and a movable sharp nozzle, and the movable sharp nozzle is connected with a linear driving mechanism which is connected to the button switch; one side that the fender adopted mud towards the sampling pipe is equipped with dabs the switch, dabs the switch and passes through the second wire and connect the pilot lamp on waterproof power supply box. The utility model discloses can effective control and confirm river lake bed mud sampling depth, avoid the mutual interference of sampling, can improve the normal position nature of sampling.

Description

River lake sediment normal position sample thief

Technical Field

The utility model relates to a river course lake bed mud sample technical field especially relates to a river lake bed mud normal position sample thief.

Background

After the rivers and lakes are polluted by the outside, a small part of pollutants can be cleared up through the self-purification effect, most of pollutants are settled to form bottom sediments to form river and lake bottom mud, the river and lake bottom mud is easy to suspend again and reenter a water body when being disturbed by water flow, so that the water quality of the water body is influenced, when the river and lake water state is repaired and treated, the bottom mud deposited in the rivers and lakes needs to be sampled and analyzed, when a bottom mud sample is collected in a target water area, the pollution condition is different due to different settled layers of the bottom mud, the bottom mud is positioned under the water and is not convenient to observe, the mud collecting depth is inconvenient to control by a traditional sampling mode, in addition, the interior of the traditional sampler is inconvenient to clean, after one-time sampling is completed, the residual bottom mud in the sampling pipe can bring interference to subsequent samples, the bottom mud is in a flowing state in the water, and the sampling port of the traditional sampling pipe, the method brings great difficulty to in-situ sampling, and for this reason, we propose an in-situ sampler for river and lake sediment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a river lake bed mud normal position sample thief, but the effective control bed mud sampling depth, the collection degree of depth of being convenient for confirm realizes the collection of multilayer bed mud, and the sampling pipe is inside to be cleared up by oneself, avoids the interference to next sampling, can improve the normal position nature of sampling, favourable experimental analysis to the bed mud.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

designing an in-situ sampler for bottom mud of rivers and lakes, which comprises a sampling pipe, wherein one end of the sampling pipe is provided with a supporting frame, and two sides of the supporting frame are provided with elongated adjusting holes along the length direction of the supporting frame;

a mudguard matched with the inner diameter of the sampling pipe is arranged in the sampling pipe, and an adjusting part for adjusting the mud collecting depth is arranged on one side of the mudguard, which faces the support frame;

a plurality of drain holes with the same aperture are arrayed on two sides of the sampling pipe along the length direction of the sampling pipe;

a connecting boss is fixed at one end of the support frame, which is far away from the sampling tube, a telescopic rod with a multi-section structure is detachably connected to the connecting boss, and sections of the telescopic rod are screwed, locked and connected through locking sleeves;

a clamping seat is arranged on the side part of one end, positioned in a handheld manner, of the telescopic rod, a waterproof power supply box with a cylindrical structure is clamped on the clamping seat, and a button switch and an indicator lamp are arranged at the top of the waterproof power supply box;

the sampling device comprises a sampling tube, a support frame, a fixed sharp nozzle, a movable sharp nozzle, a support rod, a linear driving mechanism and a button switch, wherein the end, far away from the support frame, of the sampling tube is symmetrically provided with the fixed sharp nozzle and the movable sharp nozzle, the fixed sharp nozzle and the sampling tube are of an integral structure, two sides of the movable sharp nozzle are provided with support lugs, the support lugs are rotatably connected to the end part of the sampling tube, one side, far away from the fixed sharp nozzle, of the movable sharp nozzle is provided with a support of a wedge-shaped structure, the support is connected with the linkage rod through a;

the fender is equipped with the limiting plate towards one side that the sampling pipe adopted mud, the circumference of limiting plate is gone up to be fixed in the fender through having elastic seal cover, is packaged with in the seal cover and dabs the switch, dabs the switch and will through the second wire the pilot lamp is connected on the waterproof power supply box.

Furthermore, the adjusting part comprises a push-pull rod, the push-pull rod is fixedly connected to the axis of the fender, one end, far away from the fender, of the push-pull rod extends into the supporting frame, a sliding block is fixedly connected to the end, far away from the fender, of the push-pull rod, the sliding block is connected in the adjusting hole in a sliding mode, push-pull handles are arranged at two ends of the sliding block, and a positioning mechanism is arranged on the push-pull rod.

Furthermore, positioning mechanism includes fixed pin and a plurality of pinhole, and a plurality of pinhole equipartition array is in push-and-pull rod length direction, the fixed pin is fixed one side of the top of sampling pipe to correspond the setting with the pinhole.

Further, linear driving mechanism is electric telescopic handle, electric telescopic handle's the outside is equipped with the waterproof cover, the waterproof cover is fixed on the tip of sampling pipe, electric telescopic handle's output pole extends to the outside of waterproof cover and is connected through pin rotation on the tip of trace.

Furthermore, the waterproof case is located the position of output rod is equipped with waterproof cover, waterproof cover is established in the outside of output rod.

Furthermore, the lateral part of sampling pipe is equipped with the observation window along its length direction, and the embedded glass board or the plastic slab that is equipped with transparent structure of observation window.

Furthermore, the side part of the sampling pipe and one side of the observation window are provided with scales.

Furthermore, the length of the push-pull rod is larger than that of the inner cavity of the sampling tube.

Furthermore, the first lead and the second lead are both waterproof leads with a spiral structure.

Furthermore, a brush body is arranged on the circumferential direction of the mudguard.

The utility model provides a river lake bed mud normal position sample thief, beneficial effect lies in:

(1) the utility model discloses a set up adjustable fender in the sampling pipe, realize the collection to the different degree of depth bed mud, the sampling of favourable different waters, multilayer bed mud, the experimental analysis of being convenient for.

(2) The utility model discloses a warning light shows the collection degree of depth, and the observation of the bed mud degree of depth sampling of being convenient for improves the control of adopting the mud degree of depth.

(3) The utility model discloses a brush body on the fender can clear up sampling pipe inside, avoids the interference to next sampling.

(4) The utility model discloses a wash port on the sampling pipe can in time discharge the water of the intraductal collection of sampling, simultaneously, the movable sharp mouth that sets up through the bottom can carry out the closure in sharp actuating mechanism's effect, can avoid flowing or the drunkenness from the sampling pipe after the bed mud sampling, improves the normal position nature of mud appearance.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic diagram of the internal structure of the sampling tube according to the present invention;

FIG. 4 is an enlarged schematic view of FIG. 1 about point A;

fig. 5 is an enlarged schematic view of fig. 3 about point B.

Labeled as: the device comprises a sampling tube 1, a fixed sharp mouth 11, a movable sharp mouth 12, a rivet 13, a support lug 14, a support 15, an observation window 16, a water drainage hole 17, scales 18, a support frame 2, an adjusting hole 21, a connecting boss 22, a push-pull rod 3, a pin hole 31, a fixing pin 32, a slide block 33, a push-pull handle 34, a telescopic rod 4, a clamping seat 41, a locking sleeve 42, a fender 5, a brush body 51, a limiting plate 52, a sealing sleeve 53, a waterproof power box 6, a button switch 61, an indicator lamp 62, a first lead 63, a waterproof shell 7, an electric telescopic rod 71, an output rod 72, a linkage rod 73, a waterproof sleeve 74, a tact switch 8 and a second lead 82.

Detailed Description

The present invention will be further described with reference to the following specific examples. These examples are provided only for illustrating the present invention and are not intended to limit the scope of the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The structural features of the present invention will now be described in detail with reference to the accompanying drawings.

Referring to fig. 1-5, a river lake bed mud normal position sample thief, including sampling pipe 1, the one end of sampling pipe 1 is equipped with support frame 2, and support frame 2 and sampling pipe 1 structure as an organic whole are equipped with rectangular shape regulation hole 21 along its length direction in the both sides of support frame 2, and sampling pipe 1 and support frame 2 adopt the aluminum alloy material to make, and sampling pipe 1 can also adopt glass fiber to make, ensures portable effect.

Be equipped with in the sampling pipe 1 rather than internal diameter assorted fender 5, fender 5 adopts the rigid plastic material to make, and fender 5 is equipped with the adjusting part who is used for adjusting the mud degree of depth of adopting towards one side of support frame 2, and fender 5 can be located different positions department in sampling pipe 1 under adjusting part's regulation, and then realizes the regulation to the river lake bed mud collection degree of depth.

The both sides of sampling pipe 1 are equipped with the wash port 17 that a plurality of apertures are the same along its length direction array, and wash port 17 is used for when gathering the bed mud, can in time with the water drainage of gathering in the sampling pipe 1, avoids the inside hoarding water of sampling pipe 1 to the destruction of bed mud normal position, and simultaneously, wash port 17 can also carry out the normal position sample to the bed mud of gathering in the sampling pipe 1.

One end that sampling pipe 1 was kept away from to support frame 2 is fixed with connects boss 22, connect the telescopic link 4 that is connected with multisection structure through the detachable mode on the boss 22, the detachable mode between connection boss 22 and the telescopic link 4 adopts the threaded connection mode, make things convenient for the dismouting of telescopic link 4 like this, revolve wrong locking connection through lock sleeve 42 between the festival of telescopic link 4 and the festival, multisection telescopic link 4 can be according to the dive degree of depth regulation of river lake to the bed mud collection, in order to adapt to the collection of different degree of depth river lake bed mud, telescopic link 4 adopts the aluminum alloy material to make, reduce self weight, it is portable to be convenient for.

The telescopic link 4 is located handheld one end lateral part and is equipped with cassette 41, cassette 41 adopts the soft plastic material to make, the waterproof power supply box 6 that the joint has the cylindricality structure on the cassette 41, be equipped with dry battery or lithium cell in the waterproof power supply box 6, be used for supplying power for linear drive mechanism and pilot lamp 62, button switch 61 and pilot lamp 62 that the top of waterproof power supply box 6 was equipped with, button switch 61 is used for controlling opening and closing of linear drive mechanism, pilot lamp 62 is used for showing the affirmation of adopting the mud degree of depth.

The sampling tube 1 is provided with a fixed sharp nozzle 11 and a movable sharp nozzle 12 at one end far away from the support frame 2 symmetrically, the fixed sharp nozzle 11 and the movable sharp nozzle 12 are both made of aluminum alloy materials, the movable sharp nozzle is densely provided with 40-mesh small holes which are beneficial to discharge water, the fixed sharp nozzle 11 and the sampling tube 1 are of an integral structure, two sides of the movable sharp nozzle 12 are provided with support lugs 14, the support lugs 14 are connected to the end part of the sampling tube 1 in a rotating connection mode, the rotating connection mode adopts rivets 13 for connection, the gap between the support lugs 14 and the sampling tube 1 can be reduced by adopting the connection mode, the connection stability is improved, one side of the movable sharp nozzle 12 far away from the fixed sharp nozzle 11 is provided with a support 15 with a wedge-shaped structure, the support 15 is connected with a linkage rod 73 through a pin, the linkage rod 73 is made of a hollow stainless steel tube, the other end of the linkage rod 73 is provided with a linear driving mechanism, the linear driving mechanism is connected to the, linear drive mechanism realizes linear drive output under button switch 61's control, and the rotation of rethread trace 73 realization activity sharp mouth 12, and then realizes that activity sharp mouth 12 is closed with fixed sharp mouth 11 and opens, when opening, goes deep bed mud sampling, and the sampling is accomplished the back and is closed, encapsulates the bed mud of gathering in sampling pipe 1, effectively avoids the outflow of river lake bed mud after the collection.

A limiting plate 52 is arranged on one side of the mud guard 5 facing the mud collection of the sampling pipe 1, the limiting plate 52 is fixed in the mud guard 5 in the circumferential direction through a sealing sleeve 53 with elasticity, the sealing sleeve 53 can be made of rubber with elasticity, the appearance of the sealing sleeve is of a wave-shaped structure, so that the sealing sleeve has good resetting capability, a tact switch 8 is sealed in the sealing sleeve 53, the tact switch 8 connects an indicator lamp 62 to a waterproof power supply box 6 through a second lead 82, the tact switch 8 is used for determining the collection depth of the bottom mud, when the pipe section of the sampling pipe 1 below the mud guard 5 is filled with the bottom mud, the bottom mud is propped against the limiting plate 52 and presses the tact switch 8, the indicator lamp 62 is switched on, the indicator lamp 62 indicates that the sampling pipe 1 collects the bottom mud with the set depth under the condition that the light is emitted, and after the bottom mud is excreted, the limiting plate 52 is reset under the, the tact switch 8 is turned off and the indicator lamp 62 is turned off.

The utility model discloses a river lake bed mud normal position sample thief, moreover, the steam generator is simple in structure, and is easy to operate, it is light portable, set up adjustable fender 5 in the sampling pipe 1, the realization is to the collection of different degree of depth bed mud, favorable different waters, the sampling of multilayer bed mud, the experimental analysis of being convenient for, show the collection degree of depth through warning light 62, the observation of the bed mud degree of depth sampling of being convenient for, the control of the mud degree of depth is adopted in the improvement, wash port 17 through on the sampling pipe can in time discharge the water of collection in the sampling pipe 1, and simultaneously, the movable sharp mouth 12 that sets up through the bottom can carry out the closure in sharp actuating mechanism's effect, can avoid flowing or the drunkenness from sampling pipe 1 after the bed mud sampling, improve.

Specifically, when in use, a splash guard 5 with an adjusting part is arranged in the sampling tube 1, the position of the splash guard 5 on the sampling tube 1 is adjusted through the adjusting part, the mud collecting depth of the sampling tube 1 is adjusted, next, a movable sharp nozzle 12 is connected to the output end of a linear driving mechanism through a linkage rod 73, then, the telescopic rod 4 is in threaded connection with the support frame 2, the length of the telescopic rod 4 is adjusted according to the depth of a river or lake, finally, the linear driving mechanism is connected in series with a battery in a waterproof power box 6 through a first lead 63 and a button switch 61, an indicator lamp 62 is connected in series with a light touch switch 8 on the battery in the waterproof power box 6 through a second lead 82, the movable sharp nozzle 12 samples bottom mud when opened, accumulated water in the sampling tube 1 is continuously discharged through a water discharge hole 17 along with the bottom mud continuously entering the sampling tube 1 in the sampling process, after the sediment reached the sampling degree of depth, the top of sediment just can touch limiting plate 52 and extrude and dabber switch 8, at this moment, pilot lamp 62 switch on, suggestion operating personnel reaches the collection degree of depth, and make straight line actuating mechanism switch on through button switch 61, drive movable sharp mouth 12 closure on fixed sharp mouth 11, just so accomplish the sampling of sediment, when the sediment in discharge sampling pipe 1, only need through promoting fender 5 with the sediment from pushing out alright in sampling pipe 1, the sediment is pushed out the back, place sampling pipe 1 reciprocal many times pull fender 5 in the clear water, alright clear away remaining sediment in the sampling pipe 1.

Referring to fig. 1 and 3, further, the adjusting member includes a push-pull rod 3, the push-pull rod 3 is an aluminum alloy rod member with a solid structure, the push-pull rod 3 is fixedly connected to the axis of the mudguard 5, and one end of the push-pull rod 3 away from the mudguard 5 extends to the inside of the support frame 2, and is fixedly connected with a sliding block 33, the sliding block 33 is connected in the adjusting hole 21 in a sliding way, two ends of the sliding block 33 are provided with a push-pull handle 34, the push-pull rod 3 is provided with a positioning mechanism, the length of the push-pull rod 3 is larger than that of the inner cavity of the sampling tube 1, so that the mud in the sampling tube 1 can be completely pushed out through the mud guard 5, when the mudguard 5 is adjusted, the sliding block 33 is pushed to slide along the adjusting hole 21 by the push-pull handle 34, so that the push-pull rod 3 can drive the mudguard 5 to move in the sampling tube 1, and then the adjustment of the collection depth of the sampling pipe 1 is realized, and the collection depth is the depth from the pipe orifice of the sampling pipe 1 to the mudguard 5.

Referring to fig. 1 and 3, further, the positioning mechanism includes a plurality of pin holes 31 and a plurality of fixing pins 32, the plurality of pin holes 31 are uniformly distributed and arrayed in the length direction of the push-pull rod 3, and the fixing pins 32 are fixed on one side of the top of the sampling tube 1 and are arranged corresponding to the pin holes 31.

The positioning mechanism is arranged, so that the push-pull rod 3 can be limited and fixed in the using process, the fender 5 can be limited and fixed, and finally the bottom mud sampling depth can be positioned.

Referring to fig. 3, further, the linear driving mechanism is an electric telescopic rod 71, a waterproof shell 7 is arranged on the outer side of the electric telescopic rod 71, the waterproof shell 7 is a plastic shell, the waterproof shell 7 is fixed on the end portion of the sampling tube 1, an output rod 72 of the electric telescopic rod 71 extends to the outside of the waterproof shell 7 and is connected to the end portion of a linkage rod 73 in a rotating mode through a pin, a waterproof sleeve 74 is arranged at the position, located on the output rod 72, of the waterproof shell 7, the waterproof sleeve 74 is a rubber sleeve, the waterproof sleeve 74 is sleeved on the outer side of the output rod 72, and the waterproof sleeve 74 made of rubber materials can improve the sealing performance between the waterproof shell 7 and the output rod 72 and prevent river or lake water from entering the waterproof.

The electric telescopic rod 71 is arranged, the output stroke of the electric telescopic rod 71 is fixed, so that the opening and closing of the movable sharp mouth 12 are controlled conveniently, the electric telescopic rod 71 completes reciprocating expansion once and is the opening and closing of the movable sharp mouth 12 once, the output rod 72 of the electric telescopic rod 71 extends out, the movable sharp mouth 12 is in a closed state, and the movable sharp mouth 12 is in an opening and closing state when the output rod 72 is retracted.

Referring to fig. 1, further, the side of the sampling tube 1 is provided with a viewing window 16 along the length direction thereof, and a glass plate or a plastic plate with a transparent structure is embedded in the viewing window 16.

And an observation window 16 is arranged, so that the collected sediment can be observed in situ conveniently.

Referring to fig. 1, further, the side of the sampling tube 1 and on the side of the viewing window 16 is provided with a scale 18.

The scales 18 are arranged, so that the position of the mudguard 5 on the sampling pipe 1 can be conveniently adjusted, and the adjustment precision of the bottom mud sampling depth is further improved.

Referring to fig. 3, the first wire 63 and the second wire 82 are waterproof wires having a spiral structure.

Set up the waterproof wire of helix structure, make things convenient for adjustment part and telescopic link 4's flexible regulation.

Referring to fig. 5, a brush body 51 is further provided on the circumferential direction of the mudguard 5.

Set up the brush body 51, improve the cleaning power to sampling pipe 1 inside, when cleaning sampling pipe 1 inside, brush body 51 is along with fender 5 reciprocating motion in sampling pipe 1, and is further, improves the clearance effect to remaining bed mud in sampling pipe 1.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The in-situ sampler for the bottom mud of the river and the lake comprises a sampling pipe (1) and is characterized in that one end of the sampling pipe (1) is provided with a support frame (2), and two sides of the support frame (2) are provided with strip-shaped adjusting holes (21) along the length direction;

a mudguard (5) matched with the inner diameter of the sampling pipe (1) is arranged in the sampling pipe (1), and an adjusting part for adjusting the mud collecting depth is arranged on one side of the mudguard (5) facing the support frame (2);

a plurality of drain holes (17) with the same aperture are arrayed on two sides of the sampling pipe (1) along the length direction;

a connecting boss (22) is fixed at one end of the support frame (2) far away from the sampling tube (1), a telescopic rod (4) with a multi-section structure is detachably connected onto the connecting boss (22), and sections of the telescopic rod (4) are screwed and locked through locking sleeves (42);

a clamping seat (41) is arranged on the side part of one end, positioned in a handheld manner, of the telescopic rod (4), a waterproof power supply box (6) with a cylindrical structure is clamped on the clamping seat (41), and a button switch (61) and an indicator lamp (62) are arranged on the top of the waterproof power supply box (6);

the sampling tube (1) is provided with a fixed sharp nozzle (11) and a movable sharp nozzle (12) in a symmetrical mode at one end far away from the support frame (2), the fixed sharp nozzle (11) and the sampling tube (1) are of an integrated structure, support lugs (14) are arranged on two sides of the movable sharp nozzle (12), the support lugs (14) are rotatably connected to the end portion of the sampling tube (1), one side, far away from the fixed sharp nozzle (11), of the movable sharp nozzle (12) is provided with a support (15) of a wedge-shaped structure, the support (15) is connected with a linkage rod (73) through a pin, the other end of the linkage rod (73) is provided with a linear driving mechanism, and the linear driving mechanism is connected to the button switch (61) through a first lead (63);

fender (5) are equipped with limiting plate (52) towards one side that sampling pipe (1) adopted mud, fix in fender (5) through having elastic seal cover (53) in the circumference of limiting plate (52), the encapsulation is equipped with in seal cover (53) and dabs switch (8), dabs switch (8) and will through second wire (82) pilot lamp (62) are connected on waterproof power supply box (6).

2. The in-situ sampler for the bottom mud of the river and lake according to claim 1, wherein the adjusting component comprises a push-pull rod (3), the push-pull rod (3) is fixedly connected to the axis of the fender (5), one end of the push-pull rod (3) far away from the fender (5) extends into the support frame (2), and is fixedly connected with a sliding block (33), the sliding block (33) is slidably connected in the adjusting hole (21), push-pull handles (34) are arranged at two ends of the sliding block (33), and a positioning mechanism is arranged on the push-pull rod (3).

3. The in-situ sampler for bottom mud in river and lake according to claim 2, wherein the positioning mechanism comprises a fixing pin (32) and a plurality of pin holes (31), the plurality of pin holes (31) are uniformly distributed and arrayed in the length direction of the push-pull rod (3), and the fixing pin (32) is fixed on one side of the top of the sampling tube (1) and is arranged corresponding to the pin holes (31).

4. The in-situ sampler for bottom mud in rivers and lakes according to claim 1, characterized in that the linear driving mechanism is an electric telescopic rod (71), a waterproof shell (7) is arranged on the outer side of the electric telescopic rod (71), the waterproof shell (7) is fixed on the end of the sampling pipe (1), and an output rod (72) of the electric telescopic rod (71) extends to the outside of the waterproof shell (7) and is rotatably connected to the end of the linkage rod (73) through a pin.

5. The in-situ sampler for bottom mud in rivers and lakes according to claim 4, characterized in that the waterproof case (7) is provided with a waterproof jacket (74) at the position of the output rod (72), and the waterproof jacket (74) is sleeved outside the output rod (72).

6. The in-situ sampler for bottom mud in rivers and lakes according to claim 1, characterized in that the side of the sampling pipe (1) is provided with an observation window (16) along the length direction thereof, and a glass plate or a plastic plate with a transparent structure is embedded in the observation window (16).

7. The in-situ sampler for bottom mud in rivers and lakes according to claim 6, characterized in that the side of the sampling pipe (1) and the side of the observation window (16) are provided with scales (18).

8. The in-situ sampler for river and lake sediment as claimed in claim 2, wherein the length of the push-pull rod (3) is greater than the length of the inner cavity of the sampling tube (1).

9. The in-situ sampler for bottom mud in rivers and lakes according to claim 1, characterized in that said first conducting wire (63) and said second conducting wire (82) are both waterproof conducting wires with helical structure.

10. The in-situ sampler for bottom mud of rivers and lakes according to claim 1, characterized in that a brush body (51) is arranged on the circumferential direction of the fender (5).