Visual portable bottom mud sampler

Abstract

The invention relates to a visual portable bottom mud sampler, which belongs to the technical field of river channel bottom mud sampling detection, and comprises a transparent pipe, the top of the transparent pipe is in threaded connection with a connecting pipe, the outer surface of the connecting pipe is provided with a connecting assembly for improving the stability of the sampler, and the outer surface of the connecting assembly is provided with four foot stools for providing supporting force. An impact mechanism for improving the sampling efficiency and saving manpower is arranged at the top of the connecting assembly, a measurement and control assembly for providing energy for the device is arranged at the top of the impact mechanism, a receding assembly for improving the operation stability of the device is arranged at the top of the measurement and control assembly, and a negative pressure assembly for performing negative pressure extraction on sludge is arranged on the inner side of the transparent pipe. According to the visible portable bottom mud sampler, the device can be quickly mounted and dismounted through the connecting assembly, the portability of the device is further improved, and meanwhile, through the detachable design of the transparent pipe, the connecting pipe and the receding pipe, the carrying convenience is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of riverbed sediment sampling and detection, in particular to a visual portable sediment sampler. Background Art

[0002] Bottom sediment is an important component of water bodies such as rivers and lakes. It not only exchanges substances with water bodies, but also provides a living environment for aquatic organisms. However, with the accelerated development of industrialization and urbanization, water pollution problems are becoming increasingly serious. A large amount of pollutants are discharged into water bodies, and some pollutants will be deposited in the bottom sediment. These pollutants include but are not limited to heavy metals, organic pollutants, microorganisms, etc., which pose a serious threat to aquatic ecosystems. Therefore, sampling and analyzing the bottom sediment to understand the types, contents and distribution characteristics of pollutants has become an important means to assess the pollution status of water bodies and formulate pollution prevention and control measures. With the development of science and technology, bottom sediment samplers have gradually adopted more advanced technologies.

[0003] For example, a Chinese patent (publication number: CN118362350A) is a water body sediment sampler. The invention provides a water body sediment sampler that can avoid stirring and mixing the mud sample when digging the water body sediment, thereby ensuring the integrity of the water body sediment sample. A water body sediment sampler includes a mounting frame, a suspension rope, a connecting shaft, a sampling bucket and a torsion spring. The top of the mounting frame is connected to the suspension rope, and the front and rear sides of the lower part of the mounting frame are rotatably connected to the connecting shafts, and the sampling bucket is connected between the connecting shafts. The connecting shafts are connected to the mounting frame with torsion springs. The mounting frame moves downward so that the shifting frame is squeezed and restricted by the shifting block, driving the locking pin to slide, so that the locking pin is separated from the sampling bucket. At this time, the torsion spring rebounds, driving the connecting shaft to rotate 180 degrees, which can avoid stirring and mixing the mud sample when digging the water body sediment, thereby ensuring the integrity of the water body sediment sample.

[0004] However, the device is not portable enough and requires special external lifting tools, etc. These tools are generally bulky, difficult to carry, and cumbersome to use. They are not convenient to use or carry. Therefore, a visual portable sediment sampler is proposed to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a visual portable sediment sampler having the advantages of high portability and solving the problem that the device is relatively bulky and inconvenient to carry.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a visual portable sediment sampler, comprising a transparent tube, the top of the transparent tube is threadedly connected with a connecting tube, the outer surface of the connecting tube is provided with a connecting component for improving the stability of the sampler, the outer surface of the connecting component is provided with four tripods for providing support force, the top of the connecting component is provided with an impact mechanism for improving sampling efficiency and saving manpower, the top of the impact mechanism is provided with a measurement and control component for providing energy for the device, the top of the measurement and control component is provided with a yielding component for improving the operating stability of the device, and the inner side of the transparent tube is provided with a negative pressure component for extracting sludge under negative pressure;

[0007] The connecting assembly comprises a connecting block movably connected to the outer surface of the connecting pipe, the connecting block is provided with two locking grooves, the top wall and the bottom of the inner cavity of the connecting block are fixed with plane bearings, a limit gear is fixed between the two plane bearings, the inner side of the limit gear is provided with two make way grooves, the side walls of the two make way grooves are fixed with two telescopic rods, the four telescopic rods are fixed with a rotation limit block on the opposite side, the inner side of the connecting block is provided with an annular connecting groove, the annular connecting groove is adapted to the two rotation limit blocks, the top wall of the inner cavity of the connecting block is rotatably connected with two rotating rods through bearings, a cylindrical gear and a driving gear are fixed to the outer surface of each of the rotating rods, the two cylindrical gears are meshed with the limit gear, and a locking portion is provided on the rear side of each of the driving gears;

[0008] The impact mechanism includes a shell fixed to the top of the connecting block, a driving motor is fixed to the front of the shell, an active rod is fixed to the output shaft of the driving motor, three driven rods are rotatably connected to the side wall of the inner cavity of the shell through bearings, a bevel gear is fixed to the outer surface of each of the driven rods and the active rod, an eccentric wheel is fixed to the outer surface of each of the driven rods and the active rod and located on the outside of the bevel gear, and a counterweight is fixed to the rear side of the shell.

[0009] Furthermore, the connecting tube is connected to the transparent tube, and stabilizing blocks are fixed on both sides of the connecting tube. Trapezoidal grooves are provided on the opposite sides of the two stabilizing blocks, and the trapezoidal grooves are adapted to the rotation limit blocks. Each locking portion includes a rack meshing with the driving gear, and a locking block is fixed on the side of each rack close to the connecting tube, and the locking portion is adapted to the locking groove.

[0010] Furthermore, each of the tripods consists of an articulated seat, a telescopic part and a base plate, each of the articulated seats is threaded with two screws, each of the articulated seats is fixed to the outer surface of the connecting block by screws, the outer side of each articulated seat is provided with a telescopic part, the bottom of each telescopic part is hinged to the base plate, each of the base plates is provided with a stabilizing hole, and a pin rod is movably connected in each of the stabilizing holes.

[0011] Furthermore, each of the telescopic parts includes a thin rod hinged to the outer side of the hinge seat, a tension spring is fixed to the bottom of each thin rod, a thick rod is fixed to the end of each tension spring away from the thin rod, and each of the thin rods is movably connected to the thick rod.

[0012] Furthermore, the four bevel gears are meshed with each other, the four eccentric wheels are symmetrical along the diagonal line of the outer shell as a whole, and the inner side of the outer shell is movably connected to the connecting pipe.

[0013] Furthermore, the measurement and control component includes a protective shell fixed to the top of the outer shell, batteries are fixed on the left and right side walls of the inner cavity of the protective shell, an electromagnetic encoder is fixed to the rear side wall of the inner cavity of the protective shell, a transmission shaft is fixed to the receiving rod of the electromagnetic encoder, a roller is fixed to the outer surface of the transmission shaft, and a control panel is fixed to the top of the outer shell.

[0014] Furthermore, the give-way component includes a give-way tube threadedly connected to the top of the protective shell, the give-way tube is communicated with the inner side of the protective shell, a pressure relief hole is opened on the top of the give-way tube, a soft plug is abutted in the pressure relief hole, and a one-way valve is fixedly connected to the right side wall of the give-way tube.

[0015] Furthermore, the negative pressure assembly includes a negative pressure rod movably connected to the inner side of the transparent tube, a piston is fixed to the bottom of the negative pressure rod, and a measuring rod is fixed to the top of the negative pressure rod.

[0016] Furthermore, the measuring rod passes through the transparent tube and the connecting tube and extends to the inner side of the protective shell, and the right side of the measuring rod abuts against the roller.

[0017] Furthermore, a pressure head is threadedly connected to the bottom of the transparent tube, and sealing soft blocks are fixed to the top and bottom of the connecting tube, and the opposite sides of the two sealing soft blocks are respectively against the transparent tube and the protective shell.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] 1. The visual portable sediment sampler can realize the rapid installation and disassembly of the device through the connection components, which further improves the portability of the device. At the same time, the detachable design of the transparent tube, the connecting tube and the giving way tube further improves the convenience of carrying.

[0020] 2. This visual portable sediment sampler, through the cooperation of the measurement and control component and the negative pressure component, can provide real-time feedback on the sampling depth and further improve the sampling quality.

[0021] 3. For the visual portable sediment sampler, when the sediment is relatively soft, it is only necessary to use a tripod to fix the sampler as a whole. Then, under the combined effect of the sampler's own weight and the tensile force of the tripod, the user only needs to press down slightly to sample the sediment, which fully saves manpower and improves the simplicity of sampling.

[0022] 4. When the visual portable sediment sampler encounters a riverbed that has been dry for a long time, the ground is relatively hard at this time, and its hardness will further increase with the deepening of the depth. It is difficult to take samples by manpower alone. At this time, the impact mechanism can be used with a tripod to replace manpower for sampling, so as to successfully carry out sampling. The device has a wide sampling range and can smoothly sample both relatively soft sediment and hard sediment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a three-dimensional appearance diagram of the rotation limit block of the present invention;

[0026] Figure 4 A top view of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the telescopic part of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the impact mechanism of the present invention;

[0029] Figure 7 This is a three-dimensional appearance diagram of the eccentric wheel of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the measurement and control component of the present invention.

[0031] In the figure: 1 transparent tube, 2 connecting tube, 3 connecting assembly, 301 connecting block, 302 plane bearing, 303 limiting gear, 304 telescopic rod, 305 rotation limiting block, 306 rotating rod, 307 cylindrical gear, 308 driving gear, 309 locking part, 3091 rack, 3092 locking block, 4 tripod, 401 hinge seat, 402 telescopic part, 4021 thin rod, 4022 tension spring, 4023 thick rod, 403 bottom plate, 5 impact mechanism, 501 housing, 502 drive motor, 503 active rod, 504 driven rod, 505 bevel gear, 506 eccentric wheel, 507 counterweight, 6 measurement and control component, 601 protective shell, 602 battery, 603 electromagnetic encoder, 604 transmission shaft, 605 roller, 7 yielding component, 701 yielding tube, 702 one-way valve, 703 soft plug, 8 negative pressure component, 801 negative pressure rod, 802 piston, 803 measuring rod. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figures 1 to 3 A visual portable sediment sampler in this embodiment includes a transparent tube 1, and a connecting tube 2 is threadedly connected to the top of the transparent tube 1. The connecting tube 2 can play a connecting role, and the threaded connection between the connecting tube 2 and the transparent tube 1 can ensure the connection stability while achieving quick disassembly. The outer surface of the connecting tube 2 is provided with a connecting component 3 for improving the stability of the sampler, and the outer surface of the connecting component 3 is provided with four tripods 4 for providing support force. The top of the connecting component 3 is provided with an impact mechanism 5 for improving sampling efficiency and saving manpower, and the top of the impact mechanism 5 is provided with a measurement and control component 6 for providing energy for the device, and the top of the measurement and control component 6 is provided with a yield component 7 for improving the operation stability of the device. The inner side of the transparent tube 1 is provided with a negative pressure component 8 for negative pressure extraction of sludge.

[0034] In addition, a pressure head is threadedly connected to the bottom of the transparent tube 1. The threaded connection between the transparent tube 1 and the pressure head can facilitate the subsequent disassembly of the pressure head, so that different pressure heads can be replaced according to different usage environments, thereby improving the sampling range and quality. Sealing soft blocks are fixed to the top and bottom of the connecting tube 2, and the sealing soft blocks can improve the overall air tightness of the device. The connecting component 3 includes a connecting block 301 movably connected to the outer surface of the connecting tube 2. Two locking grooves are provided on the connecting block 301. Plane bearings 302 are fixed to the top wall and bottom of the inner cavity of the connecting block 301. Compared with general bearings, the plane bearing 302 has a different usage direction. The connecting block 301 can be smoothly isolated from the limit gear 303 through the plane bearing 302. The limit gear 303 is fixed between the two plane bearings 302. The cooperation between the limit gear 303 and the connecting block 301 can ensure that when the connecting block 301 rotates, the cylindrical gear 307 is driven Rotation, two make way grooves are provided on the inner side of the limit gear 303, and two telescopic rods 304 are fixed on the side walls of the two make way grooves. The specific structure of the telescopic rods 304 is similar to that of the telescopic part 402, and the purpose is to provide continuous pressure for the rotation limit block 305, so that the rotation limit block 305 can be clamped. The rotation limit blocks 305 are fixed on the opposite sides of the four telescopic rods 304, and an annular connecting groove is provided on the inner side of the connecting block 301, and the annular connecting groove can allow the rotation limit block 305 to pass through, so as to ensure the smooth installation of the device. The annular connecting groove is adapted to the two rotation limit blocks 305, and the top wall of the inner cavity of the connecting block 301 is rotatably connected to two rotating rods 306 through bearings, and a cylindrical gear 307 and a driving gear 308 are fixed on the outer surface of each rotating rod 306, and the two cylindrical gears 307 are meshed with the limit gear 303, and a locking portion 309 is provided on the rear side of each driving gear 308.

[0035] It needs to be further explained that the connecting tube 2 is connected to the transparent tube 1, and stabilizing blocks are fixed on the left and right sides of the connecting tube 2. Trapezoidal grooves are provided on the opposite sides of the two stabilizing blocks, and the trapezoidal grooves are adapted to the rotation limit blocks 305. The left and right sides of the rotation limit blocks 305 are sloped. By cooperating with the rotation limit blocks 305 and the trapezoidal grooves, it can be ensured that when the connecting component 3 is unlocked, the connecting tube 2 can be separated from the connecting component 3 by pulling force. Each locking part 309 includes a rack 3091 meshing with the driving gear 308, and a locking block 3092 is fixed on the side of each rack 3091 close to the connecting tube 2, and the locking part 309 is adapted to the locking groove.

[0036] In this embodiment, the sampler is designed in blocks and matched with the connecting component 3, so that the sampler can be quickly assembled and disassembled, thereby improving portability and reducing the time occupied by assembly and disassembly as much as possible, and further improving sampling efficiency.

[0037] Please refer again Figure 1 and 4To 7, in order to increase the sampling range, each tripod 4 in this embodiment consists of an articulated seat 401, a telescopic part 402 and a base plate 403, each articulated seat 401 is threaded with two screws, each articulated seat 401 is fixed to the outer surface of the connecting block 301 by screws, and the use of screws can help to quickly separate the tripod 4 from the connecting component 3, and the outer side of each articulated seat 401 is provided with a telescopic part 402, and the bottom of each telescopic part 402 is hinged with a base plate 403. The telescopic part 402 is hinged to the base plate 403 and the telescopic part 402 itself can be telescoped, so that no matter how the sampler sinks, it can have good support stability and downward pressure. A stabilizing hole is opened on each base plate 403, and a pin rod is movably connected in each stabilizing hole. The pin rod is inserted deep into the bottom mud, and the base plate 403 is positioned by the pin rod, thereby improving the stability of the four tripods 4.

[0038] Furthermore, each telescopic part 402 includes a thin rod 4021 hinged to the outer side of the hinge seat 401, a tension spring 4022 is fixed to the bottom of each thin rod 4021, a thick rod 4023 is fixed to the end of each tension spring 4022 away from the thin rod 4021, each thin rod 4021 is movably connected to the thick rod 4023, a part of the thin rod 4021 is inserted into the thick rod 4023, and other bending forces can be resisted by partial overlap of the thin rod 4021 and the thick rod 4023, thereby ensuring that the tension spring 4022 is only subjected to tension.

[0039] It can be known that the impact mechanism 5 includes a shell 501 fixed to the top of the connecting block 301, and a driving motor 502 is fixed to the front of the shell 501. The driving motor 502 provides power for the impact mechanism 5 as a whole. An active rod 503 is fixed to the output shaft of the driving motor 502. Three driven rods 504 are rotatably connected to the side wall of the inner cavity of the shell 501 through bearings. The outer surface of each driven rod 504 and the active rod 503 is fixed with a bevel gear 505. The use of the bevel gear 505 can ensure power transmission while changing the transmission direction. Since the shell 501 is square as a whole and the middle part is hollow, it is most appropriate to use four bevel gears 505 for transmission. An eccentric wheel 506 is fixed to the outer surface of each driven rod 504 and the active rod 503 and located on the outside of the bevel gear 505. A counterweight block 507 is fixed to the rear side of the shell 501. The counterweight block 507 can balance the gravity of the driving motor 502, thereby improving the overall balance of the sampler.

[0040] In addition, the four bevel gears 505 are meshed with each other, the four eccentric wheels 506 are symmetrical along the diagonal of the outer shell 501 as a whole, the inner side of the outer shell 501 is movably connected to the connecting pipe 2, and the four eccentric wheels 506 are symmetrical along the diagonal of the outer shell 501 as a whole, which can offset the impact force in the horizontal direction and only retain the force in the vertical direction, further ensuring that the transparent tube 1 is smoothly inserted into the deep mud.

[0041] In this embodiment, the cooperation between the tripod 4 and the impact mechanism 5 can effectively improve the application range of the sampler. Sampling can be carried out regardless of soft sediment or hard sediment, and there is no need to use other large equipment. Portability is ensured while fully improving the scope of application.

[0042] Please refer again Figure 1 and Figure 8 In order to improve the quality of sampling, the measurement and control component 6 in this embodiment includes a protective shell 601 fixed to the top of the shell 501. Batteries 602 are fixed on the left and right side walls of the inner cavity of the protective shell 601. The battery 602 is a rechargeable battery. When not in use, the battery 602 of the device only needs to be charged. An electromagnetic encoder 603 is fixed to the rear side wall of the inner cavity of the protective shell 601. The biggest advantage of the electromagnetic encoder 603 may be its robustness. Unlike optical encoders, the magnetic version is insensitive to pollutants such as dust, dirt, liquid and grease, as well as shock and vibration. The receiving rod of the electromagnetic encoder 603 is fixed with a transmission shaft 604, and a roller 605 is fixed on the outer surface of the transmission shaft 604. A control panel is fixed on the top of the shell 501. The opposite sides of the two sealing soft blocks are respectively against the transparent tube 1 and the protective shell 601. The sealing soft blocks can improve the airtightness between the connecting tube 2 and the transparent tube 1 and the protective shell 601, thereby improving the sampling quality.

[0043] In addition, the yielding component 7 includes a yielding tube 701 threadedly connected to the top of the protective shell 601, the yielding tube 701 is communicated with the inner side of the protective shell 601, a pressure relief hole is opened on the top of the yielding tube 701, and a soft plug 703 is abutted in the pressure relief hole. When the device needs to be disassembled, it can be quickly disassembled by simply pulling out the soft plug 703. The right side wall of the yielding tube 701 is fixedly connected to a one-way valve 702. The one-way valve 702 can allow gas to be discharged and prevent external gas from entering the yielding tube 701, thereby ensuring the stability of the piston 802.

[0044] It can be known that the negative pressure assembly 8 includes a negative pressure rod 801 movably connected to the inner side of the transparent tube 1, and a piston 802 is fixed to the bottom of the negative pressure rod 801. The piston 802 can squeeze the air and cooperate with the one-way valve 702 to form a negative pressure area to ensure that the bottom mud exists stably in the transparent tube 1. A measuring rod 803 is fixed to the top of the negative pressure rod 801. The measuring rod 803 penetrates the transparent tube 1 and the connecting tube 2 and extends to the inside of the protective shell 601. The right side of the measuring rod 803 is against the roller 605.

[0045] In this embodiment, the measuring rod 803 drives the roller 605 to rotate, and the roller 605 drives the transmission shaft 604 to rotate, and the rotational power is transmitted to the electromagnetic encoder 603, thereby achieving the effect of recording the sampling depth.

[0046] It can be understood that the device can be quickly disassembled and assembled through the connecting component 3 and the block design, thereby improving portability, and then through the cooperation of the tripod 4 and the impact mechanism 5, the application range of the sampler is effectively improved. Finally, through the cooperation of the negative pressure component 8 and the measurement and control component 6, the sampling depth can be intuitively observed, thereby improving the sampling quality.

[0047] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the present invention is controlled by the controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The power supply provided by the battery is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0048] The working principle of the above embodiment is:

[0049] (1) When facing a relatively soft bottom mud, first install the sampler, then fix the four bottom plates 403 to the ground, and then, with the cooperation of the device's own weight and the tension spring 4022, with appropriate human assistance, the bottom mud can be easily sampled. During sampling, the electromagnetic encoder 603 is turned on through the control panel to monitor the sampling depth in real time. The transparent tube 1 cooperates with the pressure head to insert into the bottom mud. The bottom mud will squeeze the piston 802 and enter the transparent tube 1. After completing the sampling and detection, it is only necessary to manually rotate the connecting block 301 and fix the transparent tube 1. Due to the limit of the stabilizing block, the limit gear 3 03 do not understand, at the same time, the shell 501 will drive the two rotating rods 306 to rotate with the axis of the connecting tube 2 as the center of the circle, thereby driving the two cylindrical gears 307 to rotate, and further prompting the two locking parts 309 to move outward. After unlocking, you only need to pull the connecting block 301 upward to separate the connecting tube 2 from the connecting component 3, and then rotate the connecting tube 2 and the give way tube 701 to complete the disassembly of the sampler. The same is true when assembling the sampler. The block-based detachable design can effectively improve the portability of carrying, and the assembly and disassembly are very convenient. The sampling depth can be recorded in real time, which further improves the sampling effect.

[0050] (2) When facing hard bottom mud, after the device is installed and fixed to a suitable position, the driving motor 502 on the impact mechanism 5 is controlled through the control panel. At this time, the four bevel gears 505 drive each other, causing the three driven rods 504 and the active rod 503 to rotate synchronously at the same time, driving the four eccentric wheels 506 to rotate. Since the four eccentric wheels 506 are symmetrical along the diagonal lines of the shell 501, when the four eccentric wheels 506 rotate, the eccentric forces in the horizontal direction will cancel each other out, leaving only the eccentric forces in the vertical direction. The downward forces on the device are gravity and tensile force. The tension of the spring 4022 and the downward eccentric force of the eccentric wheel 506, while the only upward force on the device is the upward eccentric force when the eccentric wheel 506 rotates, so the device will continue to move downward under the action of the impact mechanism 5, and the hard bottom mud squeezing piston 802 prompts the negative pressure component 8 to move upward, and at the same time starts the electromagnetic encoder 603 to record the sampling depth in real time. The device has a wide sampling range and can sample both soft and hard bottom muds without the need for external devices, which effectively improves the portability while improving the sampling range and sampling quality.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A portable visual sediment sampler, comprising a transparent tube (1), characterized in that: The top of the transparent tube (1) is threadedly connected to a connecting tube (2); the outer surface of the connecting tube (2) is provided with a connecting assembly (3) for improving the stability of the sampler; the outer surface of the connecting assembly (3) is provided with four legs (4) for providing support force; the top of the connecting assembly (3) is provided with an impact mechanism (5) for improving sampling efficiency and saving manpower; the top of the impact mechanism (5) is provided with a measurement and control assembly (6) for providing energy for the device; the top of the measurement and control assembly (6) is provided with a yield assembly (7) for improving the operating stability of the device; and the inner side of the transparent tube (1) is provided with a negative pressure assembly (8) for extracting sludge under negative pressure; The connection assembly (3) comprises a connection block (301) movably connected to the outer surface of the connection pipe (2), the connection block (301) being provided with two locking grooves, the top wall and the bottom of the inner cavity of the connection block (301) being fixed with plane bearings (302), a limit gear (303) being fixed between the two plane bearings (302), the inner side of the limit gear (303) being provided with two clearance grooves, the side walls of the two clearance grooves being fixed with two telescopic rods (304), and the four telescopic rods (304) being fixed on opposite sides thereof. A rotation limit block (305) is provided, an annular communication groove is provided on the inner side of the connection block (301), the annular communication groove is adapted to the two rotation limit blocks (305), the top wall of the inner cavity of the connection block (301) is rotatably connected to two rotating rods (306) via a bearing, a cylindrical gear (307) and a driving gear (308) are fixed to the outer surface of each rotating rod (306), the two cylindrical gears (307) are meshed with the limit gear (303), and a locking portion (309) is provided on the rear side of each driving gear (308); The impact mechanism (5) comprises a housing (501) fixed to the top of the connecting block (301); a driving motor (502) is fixed to the front of the housing (501); an active rod (503) is fixed to the output shaft of the driving motor (502); three driven rods (504) are rotatably connected to the side wall of the inner cavity of the housing (501) via bearings; a bevel gear (505) is fixed to the outer surface of each driven rod (504) and the active rod (503); an eccentric wheel (506) is fixed to the outer surface of each driven rod (504) and the active rod (503) and located outside the bevel gear (505); and a counterweight (507) is fixed to the rear side of the housing (501).

2. A visual portable sediment sampler according to claim 1, characterized in that: The connecting tube (2) is connected to the transparent tube (1), and stabilizing blocks are fixed on both left and right sides of the connecting tube (2). Trapezoidal grooves are provided on opposite sides of the two stabilizing blocks, and the trapezoidal grooves are matched with the rotation limit blocks (305). Each locking portion (309) comprises a rack (3091) meshing with the driving gear (308), and a locking block (3092) is fixed on a side of each rack (3091) close to the connecting tube (2), and the locking portion (309) is matched with the locking groove.

3. A visual portable sediment sampler according to claim 1, characterized in that: Each of the tripods (4) comprises an articulated seat (401), a telescopic portion (402) and a bottom plate (403); each of the articulated seats (401) is threadedly connected with two screws; each of the articulated seats (401) is fixed to the outer surface of the connecting block (301) by means of screws; the outer side of each of the articulated seats (401) is provided with a telescopic portion (402); the bottom of each of the telescopic portions (402) is hingedly connected to a bottom plate (403); each of the bottom plates (403) is provided with a stabilizing hole; and each of the stabilizing holes is movably connected with a pin rod.

4. A visual portable sediment sampler according to claim 3, characterized in that: Each of the telescopic parts (402) comprises a thin rod (4021) hinged to the outer side of the hinge seat (401), a tension spring (4022) is fixed to the bottom of each of the thin rods (4021), a thick rod (4023) is fixed to one end of each of the tension springs (4022) away from the thin rod (4021), and each of the thin rods (4021) is movably connected to the thick rod (4023).

5. A visual portable sediment sampler according to claim 1, characterized in that: The four bevel gears (505) mesh with each other, and the four eccentric wheels (506) are symmetrical along the diagonal line of the outer shell (501) as a whole. The inner side of the outer shell (501) is movably connected to the connecting pipe (2).

6. A visual portable sediment sampler according to claim 1, characterized in that: The measurement and control component (6) comprises a protective shell (601) fixed to the top of the outer shell (501), batteries (602) are fixed to the left and right side walls of the inner cavity of the protective shell (601), an electromagnetic encoder (603) is fixed to the rear side wall of the inner cavity of the protective shell (601), a transmission shaft (604) is fixed to the receiving rod of the electromagnetic encoder (603), a roller (605) is fixed to the outer surface of the transmission shaft (604), and a control panel is fixed to the top of the outer shell (501).

7. A visual portable sediment sampler according to claim 6, characterized in that: The give-way assembly (7) comprises a give-way pipe (701) threadedly connected to the top of the protective shell (601); the give-way pipe (701) is communicated with the inner side of the protective shell (601); a pressure relief hole is provided at the top of the give-way pipe (701); a soft plug (703) is abutted in the pressure relief hole; and a one-way valve (702) is fixedly connected to the right side wall of the give-way pipe (701).

8. A visual portable sediment sampler according to claim 6, characterized in that: The negative pressure assembly (8) comprises a negative pressure rod (801) movably connected to the inner side of the transparent tube (1), a piston (802) being fixed to the bottom of the negative pressure rod (801), and a measuring rod (803) being fixed to the top of the negative pressure rod (801).

9. A visual portable sediment sampler according to claim 8, characterized in that: The measuring rod (803) penetrates the transparent tube (1) and the connecting tube (2) and extends to the inside of the protective shell (601), and the right side of the measuring rod (803) abuts against the roller (605).

10. The portable visual sediment sampler according to claim 6, characterized in that: The bottom of the transparent tube (1) is threadedly connected to a pressure head, and the top and bottom of the connecting tube (2) are both fixed with sealing soft blocks, and the opposite sides of the two sealing soft blocks are respectively against the transparent tube (1) and the protective shell (601).

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